Treating With Gas Patents (Class 502/430)
  • Patent number: 10478769
    Abstract: The invention relates to a product that adsorbs VOCs (150), comprising acetoacetamide, said product being characterised in that it consists of granular activated carbon (100) coated with crystallised acetoacetamide (13) on the surface of the granules, leaving free the pores of the channels (10) of the spongy body formed by the granular activated carbon. The invention also relates to a method for producing such a product.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: November 19, 2019
    Assignee: INOVAME
    Inventors: Thierry Miclo, Nelly Piazzon, Frédéric Lanoux, Larisa Dobircau
  • Patent number: 8722571
    Abstract: The invention is directed to an adsorbent comprising: a) 20-30% porous carbon with incorporated organic nitrogen species; and b) 70-80% inorganic matter. The invention is directed to a method of making an adsorbent which comprises: a) thermally drying dewatered sewage sludge to form granulated organic fertilizer; and b) pyrolyzing said the organic fertilizer at temperatures between 600 and 1000° C. The invention is additionally directed to the process of removing acidic gases from wet air streams comprising putting an adsorbent in contact with the wet air stream and allowing the adsorbent to adsorb the acidic gases.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: May 13, 2014
    Assignee: Research Foundation of the City University of New York
    Inventors: Teresa J. Bandosz, Andriy Bahryeyev, David C. Locke
  • Patent number: 8685884
    Abstract: A process for the production of low-temperature activated or partially activated partially decomposed organic matter for use as an ion-exchange medium comprising the steps of granulating partially decomposed moisture-bearing organic matter, drying the granules and activating the granules at a temperature of about 175-520° C., wherein the granule has a hardness and cation-exchange capacity suitable for a particular application desired.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: April 1, 2014
    Assignee: American Peat Technology, LLC
    Inventors: Douglas A. Green, Eric Ingwer Paulson
  • Publication number: 20140013942
    Abstract: A sorbent that is particularly effective for the efficient adsorption and subsequent desorption of ammonia is produced from a high-purity carbon material which is exposed to an oxidizing environment so as to produce an effective amount of at least one oxygen species on its exposed surfaces. The high purity carbon material may be produced by carbonizing a polymer material, and the sorbent may comprise a support having an open-cell, three dimensional, lattice-like structure.
    Type: Application
    Filed: July 12, 2013
    Publication date: January 16, 2014
    Applicant: Advanced Fuel Research, Inc.
    Inventors: Marek A. Wójtowicz, Joseph E. Cosgrove, Michael A. Serio
  • Patent number: 8309052
    Abstract: Methods for producing devolatilized and/or activated carbon in a reactor or reaction vessel of a heat treatment system from a suitable carbonaceous feedstock by introducing the feedstock into the reactor tangentially at a rotational velocity of at least 90 RPM. The methods include the steps of providing a combination of conveying means and a gas flow having various compositions and creating distinct carbonaceous feedstock material flow patterns and process conditions such that the feedstock is conveyed through the reactor or reaction vessel and heated via combustion, thereby producing activated carbon or other heat-treated carbons while concurrently avoiding adverse reaction conditions. Single and two-stage heat treatment systems may be used to heat a carbon feedstock, to which one or more industrial minerals may be added to co-produce compositions such as lime with the heat-treated carbon.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: November 13, 2012
    Assignee: Pneumatic Processing Technologies, L.L.C.
    Inventor: Michael A. Jones
  • Publication number: 20120277097
    Abstract: A gas mixture preheated to high temperatures using an oxy-fuel, an oxygen-enriched air-fuel or an air-fuel burner is used to devolatilize and partially oxidize carbonaceous feedstock, thereby producing an active residual char that can be used in applications utilizing activated carbon. Use of hot gas and ground carbonaceous feedstock allows the equipment to be minimized, thereby allowing the activated carbon to be produced at or near points of use, for example the production of activated char at or near utility boilers for use in the reduction of mercury emissions from flue gas streams.
    Type: Application
    Filed: February 21, 2012
    Publication date: November 1, 2012
    Inventors: Lawrence E. Bool, III, Chien-Chung Chao, Mark K. Weise, Jurron L.D. Bradley
  • Patent number: 8232225
    Abstract: A process for the production of low-temperature activated or partially activated partially decomposed organic matter for use as an ion-exchange medium comprising the steps of granulating partially decomposed moisture-bearing organic matter, drying the granules and activating the granules at a temperature of about 175-520° C., wherein the granule has a hardness and cation-exchange capacity suitable for a particular application desired.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: July 31, 2012
    Assignee: American Peat Technology, LLC
    Inventors: Douglas A. Green, Eric Ingwer Paulson
  • Patent number: 7964093
    Abstract: Methods and apparatus relate to treating fluid to at least reduce selenium content within the fluid, which may be an aqueous liquid and form a feed stream. The treating removes selenium that may be present in compounds, such as selenocyanate, from the feed stream based on adsorption from contact of the fluid with a sorbent. Flowing a gaseous hydrogen sulfide and sulfur dioxide containing stream over a support, such as activated carbon, may provide the sorbent impregnated with sulfur and utilized in the treating of the fluid.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: June 21, 2011
    Assignee: ConocoPhillips Company
    Inventors: Mark A. Hughes, Roland Schmidt, Jon M. Nelson, Joseph B. Cross
  • Publication number: 20110052486
    Abstract: The present invention provides a microporous carbon material capable of expressing functions that supported metal has while maintaining pore functions that the microporous carbon material inherently possesses. The microporous carbon material 5 includes: a three-dimensional long-range ordered structure within a range from 0.7 nm or more to 2 nm or less; and micropores 2a, wherein a transition metal 4 is supported on surfaces of the micropores 2a. The microporous carbon material is obtained by a method including: introducing an organic compound on a surface of and inside the micropores of a porous material containing transition metal, and obtaining a composite of the microporous carbon material containing the transition metal and the porous material by carbonizing the organic compound by a chemical vapor deposition method; and removing the porous material.
    Type: Application
    Filed: February 25, 2009
    Publication date: March 3, 2011
    Inventors: Masashi Ito, Takashi Kyotani, Hirotomo Nishihara, Peng-Xiang Hou, Li-Xiang Li, Kyohei Hada, Kazuhiko Mizuuchi
  • Publication number: 20110003686
    Abstract: Methods and systems for producing activated carbon from a particulate coal feedstock that include the introduction of an activation medium such that the water content of the coal feedstock is equal to or greater than that of the feedstock's naturally occurring state. Different methods and system configurations allow the production of activated carbon or other heat-treated carbons while concurrently avoiding adverse reaction conditions.
    Type: Application
    Filed: November 25, 2009
    Publication date: January 6, 2011
    Applicant: PNEUMATIC PROCESSING TECHNOLOGIES, L.L.C.
    Inventor: Michael A. Jones
  • Patent number: 7799733
    Abstract: The present invention provides a process for making activated carbon having BET surface area up to 2000 m2/g with pore diameter in the range 17-21 ? suitable for fabricating fuel cell and ultracapacitor electrode from coconut shell by treating carbon granules obtained from coconut shells with chemical activating agents like zinc chloride or potassium hydroxide at the room temperature range 500-800° C. in a dynamic flow of gases like N2 or CO2 for 6-24 h followed by a specific cooling pattern to room temperature. Use of such activated carbon enables the fabrication of high performance ultracapacitor electrodes in H2SO4 as exemplified by capacitance values like 180 F/g without the use of any normal metal additives such as RuO2 or IrO2.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: September 21, 2010
    Assignee: Council of Scientific and Industrial Research
    Inventors: Deepali Dattatray Wagh, Girish Vilas Arabale, Mahesh Prakash Kulkarni, Imtiaz Sirajuddin Mulla, Vijayamohanan Kunjukrishanapillai, Subhash Pundalik Vernekar, Ratnesh Kumar Jha, Nalini Edgar Jacob
  • Publication number: 20100116136
    Abstract: The method enables control over carbon pore structure to provide sorbents that are particularly advantageous for the adsorption of specific gases. It involves preparation of a sorbent precursor material, carbonization of the precursor material, and, usually, activation of the carbonized material. The resultant material is subjected to heat treatment and/or to surface conditioning by a reducing gas at elevated temperatures.
    Type: Application
    Filed: December 24, 2009
    Publication date: May 13, 2010
    Inventors: Marek A. Wójtowicz, Eric Rubenstein, Michael A. Serio
  • Patent number: 7628923
    Abstract: Treatment of un-wetted or low moisture activated carbon with a suitable quantity of carbon dioxide provides a material which, on contact with water, controls pH in treatment water. Use of this treated activated carbon in a water treatment system provides water having an essentially neutral pH which is immediately potable thereby eliminating the necessity to drain and dispose of any soak water. The contact pH of the treated carbon remains within the potable pH range for treatment of more than 100 bed volumes. Additionally, the modified carbon may minimize metal leaching from contaminants in the water.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: December 8, 2009
    Assignee: Calgon Carbon Corporation
    Inventors: Thomas Anthony Ryan, Harry Sharrock
  • Publication number: 20090038477
    Abstract: The present invention provides an evaporated fuel gas adsorbent, an evaporated fuel gas trapping apparatus that uses the adsorbent, an activated carbon, and a process for producing the activated carbon. The evaporated fuel gas adsorbent is capable of improving adsorptivity and desorptivity by reliably preventing a temperature rise and a temperature fall caused by heat generated in response to the adsorption and desorption of evaporated fuel gas, is capable of achieving a size reduction of the device, and is capable of being easily produced. The activated carbon has high mechanical strength and high abrasive resistance, has many pores suitable to adsorb an organic solvent, especially, evaporated fuel gas, and has a high packing density. The activated-carbon producing process is industrially advantageous.
    Type: Application
    Filed: August 25, 2005
    Publication date: February 12, 2009
    Applicant: Kuraray Chemical Co., Ltd.
    Inventors: Susumu Abe, Shizuo Ishimura, Takanori Kitamura, Yoshifumi Egawa, Akira Miyake, Takayuki Yamada, Tetsuya Hanamoto
  • Patent number: 6902589
    Abstract: The invention relates to a method for producing shaped, activated charcoal. According to the method, after being ground, carbon-bearing material, or a mixture of several carbon-bearing materials are rendered homogenous with a binding agent which contains water, or a mixture of several binding agents, at least one of which contains water. The mixture of carbon-bearing material and binding agent is then formed into shaped bodies. According to the invention, in order to consolidate the grain formation, these are dried until they exhibit a maximum total water content of 3% by wt. in relation to the shaped body. The shaped bodies which have been formed and dried in this manner are then subjected to a carbonization and subsequently a gas activation process.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: June 7, 2005
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Joachim Guderian, Volker Heil, Christian Horn, Michael Feseker, Jens Sohnemann
  • Patent number: 6589904
    Abstract: The present invention provides an activated carbon produced by a process, which includes: activating a carbonaceous material, to obtain an activated carbonaceous material; and contacting the activated carbonaceous material with an acid. Another embodiment of the present invention provides an electrode for an electric double-layer capacitor, which includes the above-described activated carbon. Another embodiment of the present invention provides a filter, which includes the above-described activated carbon. Another embodiment of the present invention provides a shaped article, which includes the above-described activated carbon. Another embodiment of the present invention provides a method for producing activated carbon, which includes activating a carbonaceous material, to obtain an activated carbonaceous material; and contacting the activated carbonaceous material with an acid, to obtain the activated carbon.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: July 8, 2003
    Assignees: Kuraray Co., Ltd., Kuraray Chemical Co., Ltd.
    Inventors: Hideharu Iwasaki, Nozomu Sugo, Shushi Nishimura, Yoshifumi Egawa, Hajime Aoki
  • Patent number: 6576212
    Abstract: A process of producing a carbonized material, which includes a step of treating the biomass with a microwave for a period of time sufficient to carbonize an inner region thereof but insufficient to carbonize an outer region thereof, thereby obtaining a partly carbonized product, a step of contacting the partly carbonized product with an oxidizing gas for a period of time sufficient to carbonize the outer region, thereby obtaining a completely carbonized product, and a step of cooling the completely carbonized product in a non-oxidizing atmosphere.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: June 10, 2003
    Assignee: Secretary of Agency of Industrial Science and Technology
    Inventors: Masakatsu Miura, Harumi Kaga, Kozo Ishizaki
  • Patent number: 6558454
    Abstract: A process for removing vapor phase contaminants from a gas stream includes the step of adding a raw carbonaceous starting material into a gas stream having an activation temperature sufficient to convert the raw carbonaceous starting material into an activated material in-situ. The raw carbonaceous starting material can be either a solid-phase, liquid phase or vapor-phase material. The activated material then adsorbs the vapor phase contaminants, and the activation material containing the vapor phase contaminants is removed from the gas stream using a particulate collection device. The process is particularly suited for the removal of vapor phase air toxics, such as mercury, from the flue gas of a combustion process. An apparatus for the removal of vapor phase contaminants from a gas stream is also described.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: May 6, 2003
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Ramsay Chang, Massoud Rostam-Abadi, Sharon Sjostrom
  • Patent number: 6451094
    Abstract: A process for removing vapor phase contaminants from a gas stream includes the step of adding a raw carbonaceous starting material into a gas stream having an activation temperature sufficient to convert the raw carbonaceous starting material into an activated material in-situ. The activated material then adsorbs the vapor phase contaminants, and the activation material containing the vapor phase contaminants is removed from the gas stream using a particulate collection device. The process is particularly suited for the removal of vapor phase air toxics, such as mercury, from the flue gas of a combustion process. An apparatus for the removal of vapor phase contaminants from a gas stream is also described.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: September 17, 2002
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Ramsay Chang, Massoud Rostam-Abadi, Shiaoguo Chen
  • Publication number: 20020064495
    Abstract: A process of producing a carbonized material, which includes a step of treating the biomass with a microwave for a period of time sufficient to carbonize an inner region thereof but insufficient to carbonize an outer region thereof, thereby obtaining a partly carbonized product, a step of contacting the partly carbonized product with an oxidizing gas for a period of time sufficient to carbonize the outer region, thereby obtaining a completely carbonized product, and a step of cooling the completely carbonized product in a non-oxidizing atmosphere.
    Type: Application
    Filed: May 2, 2001
    Publication date: May 30, 2002
    Inventors: Masakatsu Miura, Harumi Kaga, Kozo Ishizaki
  • Patent number: 6309446
    Abstract: Activated carbon having a specific surface area of 700 to 1,500 m2/g, a pore volume of pores having a pore diameter of 10 nm or less of 0.20 to 0.8 cc/g, a proportion of a pore volume of pores having a pore diameter of 0.6 to 0.8 nm to a pore volume of pores having a pore diameter of 10 nm or less of 75% by volume or more, a grain bulk density of 0.4 to 1.1 g/cc, a packing density of 0.30 to 0.70 g/cc, an ash content of 1.0% or less, and a tensile strength of activated carbon grains of 30 kg/cm2 or more.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: October 30, 2001
    Assignees: Kanebo, Ltd., Takachibo Chemical Industry Co., Ltd.
    Inventors: Tsutomu Nakanoya, Yuji Shibsawa, Kazuhiro Hasumi, Koji Ishimori, Satoshi Ibaraki, Akira Takauchi
  • Patent number: 6030922
    Abstract: The synthesis of carbon, particularly in an activated form, from sludge materials such as composed of biosolids and the like is described wherein the treated material is subjected to processing including chemical activation, light and humidity treatment, pyrolysis and physical activation to result in an activated carbon of high surface area and microporosity.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: February 29, 2000
    Assignee: Illinois Institute of Technology
    Inventors: Nasrin R. Khalili, Hamid Arastoopour, Laura K. Walhof
  • Patent number: 5994261
    Abstract: A pitch-type fiber convertible to an activated carbon fiber is infusiblized with an infusiblizing gas and the infusiblized fiber is activated with an activating gas, such as steam, to produce an activated carbon fiber. The waste gas from the infusiblizing step is utilized in a combusting step. The combustible component of the waste gas from the activating step is separated out of the waste gas from the activating step and combusted in the combusting step along with the waste gas from the infusiblizing step. The resulting heat from the combusting step is utilized to preheat the infusiblizing gas and the activating gas and the preheated gases are utilized in the infusiblizing step and the activating step, respectively. This arrangement allows the infusiblizing temperature and the activating temperature to be accurately controlled. Thus, an activated carbon fiber is manufactured continuously without being negatively affected by waste gases from the infusiblizing and activating steps.
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: November 30, 1999
    Assignees: Ad'All Ltd., Unitika Ltd, Osaka Gas Company Limited
    Inventors: Kazuo Tai, Satoshi Kibe, Kazuaki Otsuki, Norifumi Shindo, Masaya Hashimoto, Yukihiro Ohtaguro, Yoshiiku Fujii, Masanori Ohiwa
  • Patent number: 5990041
    Abstract: This invention relates to a mesoporous carbon material in the form of filaments having a high surface area. A process is also provided to produce mesoporous carbon material of high surface area. The process comprises drying a carbon material, surface oxidizing the dried material, stabilizing the surface oxidized material, and activating the stabilized material to produce a highly activated, mesoporous material.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: November 23, 1999
    Assignee: Research Foundation of State University of New York at Buffalo
    Inventors: Deborah D. L. Chung, Weiming Lu
  • Patent number: 5972834
    Abstract: It is possible to increase the amount of nitrogen generated per unit of adsorbent, raise the nitrogen yield, and reduce the manufacturing cost for nitrogen by using, as an adsorbent for the separation of nitrogen, molecular sieving carbon obtained by successively conducting a halogenation treatment, a dehalogenation treatment, and a pore adjustment treatment on a carbonized charcoal. By using activated carbon obtained by successively conducting a halogenation treatment, a dehalogenation treatment, and an activation treatment on a carbonized charcoal, as an adsorbent for carbon dioxide and methane, it is possible to improve the amount adsorbed.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: October 26, 1999
    Assignee: Nippon Sanso Corporation
    Inventors: Takushi Ohsaki, Takashi Inui, Katsuyoshi Yanagita, Masayoshi Hayashida, Nobuyasu Tomita, Fusao Nakamura, Satoshi Sawaguchi, Akira Wakaizumi, Hiroyuki Miyake
  • Patent number: 5972826
    Abstract: The present invention discloses an adsorbent comprising a densified carbon black. The densified carbon black comprising the adsorbent preferably has an increase in density of from about 100% to about 500% above the undensified form of the adsorbent. The densified carbon black adsorbent has an increase in adsorption capacity per unit volume over the undensified form of the adsorbent in excess of 100%. The densified carbon blacks are particularly useful as adsorbents for gases.
    Type: Grant
    Filed: February 1, 1996
    Date of Patent: October 26, 1999
    Assignee: Cabot Corporation
    Inventors: Ralph Ulrich Boes, Douglas M. Smith, Ranjan Ghosal
  • Patent number: 5849966
    Abstract: A process and catalyst for isomerizing olefins are disclosed. The process and catalyst are particularly useful for isomerizing alkenyl bridged ring compounds to the corresponding alkyladiene bridged ring compounds. In one embodiment, the isomerization catalyst comprises an oxygen treated mixture of an alkali metal on a dried support having a surface area of 125 to 195 m.sup.2 /g when the support consists essentially of alumina wherein the alumina precursor is a large crystallite pseudoboehmite. The catalyst is particularly useful for isomerizing 5-vinyl-2-norbornene to 5-ethylidiene-2-norbornene. The catalyst is very active and highly selective and resistant to catalyst poisons. The process contacts the catalyst with an alkenyl bridged ring compound and yields the corresponding alkyladiene bridged ring compound.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 15, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Robert Scott Smith, Christopher Lynn Becker
  • Patent number: 5792720
    Abstract: A method and an apparatus using a fluidized bed type adsorbing tower for manufacturing a TEDA-impregnated active carbon which is used for removing toxic materials from a fluid. A base active carbon is dried to remove the water component, and the dried active carbon is filled into the fluidizing type adsorbing tower and to above a sieve plate. A TEDA reagent is injected into a TEDA vapor generating vessel. A heated air is supplied into the TEDA vapor generating vessel so as to generate a TEDA vapor mixed with the heated air. The heated air mixed with the TEDA vapor is supplied into the lower portion of the fluidized bed type adsorbing tower so as to make the base active carbon fluidized. Thus the TEDA vapor is impregnated into the active carbon within the fluidized carbon bed.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: August 11, 1998
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Seung-Gy Ro, Hoo-Kun Lee
  • Patent number: 5714433
    Abstract: Treatment of a wet activated carbon with carbon dioxide or with carbon dioxide followed by air results in a carbon having a reduced contact pH. The activated carbon is characterized by a modified contact pH less than about 9.0 and typically between about 7.3 and 9.0. Use of this carbon in a water treatment system eliminates the excessive effluent water pH rise which commonly occurs with activated carbon.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: February 3, 1998
    Assignee: Calgon Carbon Corporation
    Inventors: Richard W. Farmer, Susan L. Kovacic, Thomas M. Matviya, Netar P. Wadhwa
  • Patent number: 5525196
    Abstract: An improved process for producing a formed activated coke for simultaneous desulfurization and denitrification, which includes passing a ground coal through a tubular or cylindrical carbonization retort by using a hot gas stream, to subject the coal to preliminary carbonization to obtain a semi-coke, adding a caking agent to the semi-coke and forming the mixture, subjecting the formed material to carbonization to obtain a formed coke, and transferring the formed coke from the top to the bottom of a vertical multi-tubular retort of indirect heating and cooling (cooling is optional) type that includes a distribution section, a heating section, an activation section and a cooling section (the distribution section and the cooling section are optional) arranged in this order (the distribution section is at the top), to activate the formed coke.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: June 11, 1996
    Assignee: Mitsui Mining Co., Ltd.
    Inventors: Toshihisa Yuda, Masahiro Matsuoka, Kazuhiko Hanashita, Fumiaki Furusawa, Mitsuhiro Takada
  • Patent number: 5498589
    Abstract: A process is disclosed for preparing a carbon molecular sieve used for the separation of oxygen from nitrogen, which comprises the steps of:(a) milling hard coal to a grain size of 95%<20.mu.m;(b) oxidizing the finely milled hard coal with air in a fluidized bed;(c) adding water and coal tar pitch as a binder and molding the finely milled hard coal into shape;(d) carbonizing the finely milled hard coal molded into shape in a rotary kiln at a temperature of 500 .degree.to 850.degree. C., with a dwelling time of 55 to 65 minutes, in order to obtain a carbonization product with a bulk density of 530 to 560 g/l;(e) activating the carbonization product with steam at to 900.degree. C. for 165 to 195 minutes to obtain a sintered carbonaceous product having a bulk density of 590 to 650 g/l; and(f) treating the sintered carbonaceous product at 750 to 850.degree. C. with carbon-splitting hydrocarbons to obtain said carbon molecular sieve.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: March 12, 1996
    Assignee: Bergwerksverband GmbH
    Inventors: Hans-Jurgen Schroter, Heinrich Heimbach, Klaus-Dirk Henning, Karl Knoblauch, Alfons S.-S. Berndt, Ferdinand Tarnow
  • Patent number: 5482915
    Abstract: The present invention is a synthesis, product and process for activated carbon and preferably carbon molecular sieve separation of air to produce a nitrogen product wherein a carbon is partially pyrolyzed, impregnated with a transition metal salt and further pyrolyzed to develop enhanced microporosity. The resulting microporous carbon can then be activated with carbon dioxide or steam and then pore-sized by cracking of hydrocarbons on the carbon to produce a carbon molecular sieve.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: January 9, 1996
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Timothy C. Golden, Andrew W. Wang, James F. Sciple
  • Patent number: 5461023
    Abstract: Natural gas is stored in a closed vessel under a pressure of about 1400 to 4500 kPa using a carbon molecular sieve adsorbent having at least 80% of its particle pore volume as micropores having diameters greater than 0.55 nm and less than 0.65 nm, particularly about 0.6 to 0.65 nm. The capacity of such micropores for methane is at least 110 mL methane per mL of carbon (at 300 psig or 2,169 kPa abs.). The deliverable volume of natural gas from a vessel packed with carbon molecular sieve particles is at least 70 times the volume of the vessel. The deliverable volume is optimized by heating a carbonized polymer in the presence of carbon dioxide to increase the pore volume.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: October 24, 1995
    Assignee: AlliedSignal Inc.
    Inventors: Chin-Hsiung Chang, Gary J. Seminara, Alan E. van Til
  • Patent number: 5447624
    Abstract: A microspherical packing for liquid chromatography, which comprises a porous silicon carbide having numerous through-pores, and a process for producing said microspherical packing.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: September 5, 1995
    Assignees: Nippon Carbon Co., Ltd., Tosoh Corporation
    Inventors: Takanobu Kawai, Hiroshi Wakizaka, Hiroyuki Moriyama, Katsuo Komiya, Hiroshi Ichikawa, Akira Yokoyama
  • Patent number: 5446005
    Abstract: There is disclosed an optically isotropic pitch-based activated carbon fiber which has a proportion of the number of ultramicropores with a pore diameter of 0.5 nm or smaller to the total number of pores with a pore diameter of 4 nm or smaller being at least 70%; a specific surface area of 500 to 3000 m.sup.2 /g; and the pores consisting substantially only of the pores with a pore diameter of 4 nm or smaller, which are allowed to three-dimentionally communicate with at least a part of the surrounding pores and are distributed with an almost uniform density throughout the fiber including the surface layer part and the inner part of the fiber. The above activated carbon fiber has a high adsorption efficiency without decrease in mechanical strength and is effectively utilized as adsorbents for low molecular organic compounds and inorganic compounds, adsorbents for trace amounts of radioactive substances, catalyst carriers, electrodes for secondary batteries, etc.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: August 29, 1995
    Inventor: Morinobu Endo
  • Patent number: 5438029
    Abstract: A preparing process of activated carbon includes steps of: combusting scrap tires containing metal wire at 400.degree. C. to 900.degree. C. under the presence of oxygen, carbon dioxide and vapor; reheating the generated combustible gases up to 800.degree. C. to 900.degree. C. by adding a further fuel; causing the exhaust gas to heat-exchange with a water pipe boiler so that the temperature of the exhaust gas downs to 180.degree. C. to 250.degree. C.; and introducing the exhaust having a temperature of 180.degree. C. to 250.degree. C. into an electric dust collector so as to collect activated carbon. The particle size of the thus obtained distributed substantially in a range of 90 to 110 mesh and the CEC (cation exchange capacity) of the activated carbon falls within 30 to 40.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: August 1, 1995
    Assignee: The Social Welfare Foundation Hokkaido Rehabily
    Inventors: Takeji Kobata, Yoshihiro Ikenaga
  • Patent number: 5187141
    Abstract: A process is provided for forming activated carbon from coal in the particulate state. The coal is first dried at a temperature sufficiently high to effect removal of moisture therefrom but below the temperature at which contained volatile matter vaporizes. The dried coal is then heated to an elevated temperature in a substantially non-oxidizing atmosphere at substantially atmospheric pressure sufficient to volatilize and remove the contained volatile matter and produce a char thereof and the char thereafter subjected to hydrogenation at an elevated temperature and pressure for a time sufficient to form activated carbon characterized by a BET surface area of at least about 200 m.sup.2 /g and an iodine number of at least about 400.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: February 16, 1993
    Inventors: Mahesh C. Jha, Robert L. McCormick
  • Patent number: 5064801
    Abstract: A process for manufacturing a carbon catalyst for use in NO.sub.x reduction with ammonia catalyzed by active carbons and active cokes is described. The new carbon catalyst exhibits improved catalytic activity and hence a higher yield in NO. In the manufacturing process, a mixture of ground, oxidized hard coal and binders is moulded, carbonized at temperatures between 700.degree. and 900.degree. C., and then activated with steam at a temperature of 800.degree. to 850.degree. C. for 45 to 100 minutes, until a degree of activation of 5 to 15% is obtained.
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: November 12, 1991
    Inventors: Harald Juntgen, Karl Knoblauch, Ekkehard Richter, Helmut Kuhl
  • Patent number: 4957897
    Abstract: Carbonaceous adsorbent particles having multimodal pore size, including micropores and macropores, with improved adsorptive and separative properties, are prepared by partial pyrolysis of polysulfonated macroporous precursor resins, said resins being in turn derived from macroporous poly(vinylaromatic) resins. The particles may be further treated by activating with reactive gases or by functionalization.
    Type: Grant
    Filed: February 7, 1989
    Date of Patent: September 18, 1990
    Assignee: Rohm and Haas Company
    Inventors: Stephen G. Maroldo, William R. Betz, Noah Borenstein
  • Patent number: 4933314
    Abstract: A molecular sieving carbon characterized by (A) having a structure in which a number of spherical carbonaceous particles having a particle diameter of 0.8 to 120 micrometers overlap and coalesce three-dimensionally at random, (B) in which continuous pathways running three-dimensionally at random exist between a number of the carbonaceous particles, (C) in which a number of the carbonaceous particles have each a number of micropores communicating with the pathways existing between the particles, and (D) having a carbon content of at least 85% by weight. The molecular sieving carbon is useful for obtaining, for example, a nitrogen gas, oxygen gas or gaseous mixture enriched with either the nitrogen gas or the oxygen gas from a gaseous mixture containing the nitrogen gas and oxygen gas.
    Type: Grant
    Filed: March 8, 1988
    Date of Patent: June 12, 1990
    Assignee: Kanebo Ltd.
    Inventors: Chisato Marumo, Eiji Hayata, Niro Shiomi
  • Patent number: 4921831
    Abstract: A method for preparing active carbon, which comprises:(a) a pulverization step of pulverizing a non-caking coal to pulverized particles having an average particle size of not larger than 10 .mu.m;(b) a granulation step of granulating the resulting pulverized particles to granules;(c) a carbonization step of carbonizing the resulting granules; and(d) an activation step of activating the resulting carbonized granules.
    Type: Grant
    Filed: October 19, 1988
    Date of Patent: May 1, 1990
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masayuki Nakai, Takeshi Yoshida, Katsumi Tomura
  • Patent number: 4880765
    Abstract: Process for producing carbon molecular sieves for separating oxygen and nitrogen by treating a carbonaceous product with inert gas and steam in a vibrating oven and further treating said product with benzene at a high temperature in a vibrating oven to thereby narrow the existing pores.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: November 14, 1989
    Assignee: Bergwerksverband GmbH
    Inventors: Karl Knoblauch, Ferdinand Tarnow, Heinrich Heimbach