Patents by Inventor Santi Kulprathipanja

Santi Kulprathipanja has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070131540
    Abstract: An apparatus and process for producing hydrogen peroxide on an as-needed basis is disclosed. An oxidizing agent is generated for reaction with water to generate hydrogen peroxide.
    Type: Application
    Filed: February 14, 2007
    Publication date: June 14, 2007
    Inventors: Laszlo Nemeth, Anil Oroskar, Santi Kulprathipanja, Gavin Towler, Kurt Vanden Bussche
  • Publication number: 20060247481
    Abstract: The present invention comprises a process for removal of oxygenates from a paraffin-rich or olefin-rich paraffin stream which comprises passing a feed stream, comprising one or more C10 to C15 feed paraffins or C10 to C15 olefin-rich paraffin stream and one or more oxygenates through an adsorbent bed comprising one or more adsorbents selected from silica gel, activated alumina and sodium x zeolites to remove essentially all of said oxygenates; and recovering said paraffins. A second adsorbent bed may be employed to more thoroughly remove these oxygenates.
    Type: Application
    Filed: July 17, 2006
    Publication date: November 2, 2006
    Inventors: Santi Kulprathipanja, James Priegnitz, Stephen Sohn, Bryan Glover, Bipin Vora
  • Patent number: 7128829
    Abstract: A novel process effective for the removal of organic sulfur compounds, organic nitrogen compounds and light olefins from liquid hydrocarbons is disclosed. The process more specifically addresses the removal of these contaminants from aromatic compounds including benzene and toluene and from naphtha. The liquid hydrocarbons are contacted with a blend of at least one metal oxide and an acidic zeolite. Preferably, the metal oxide comprises nickel oxide and molybdenum oxide and the acidic zeolite is acidic stabilized zeolite Y. This blend has a significant capacity for adsorption of impurities and can be regenerated by oxidative treatment.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: October 31, 2006
    Assignee: UOP LLC
    Inventors: Santi Kulprathipanja, Suheil F. Abdo, James A. Johnson, Daniel A. Kauff
  • Publication number: 20060205988
    Abstract: An adsorptive separation process for preparing the separate feed streams charged to naphtha reforming unit and a steam cracking unit has been developed. The feed stream to the overall unit is passed into the adsorptive separation unit. The desorbent in the adsorptive separation is selected from the group consisting of hydrocarbons having from 10 to 16 carbon atoms and mixtures thereof. The adsorptive separation separates the components of the feed stream into a normal paraffin stream, which is charged to the steam cracking process, and non-normal hydrocarbons which are passed into a reforming zone. The desorbent is readily separated from the normal paraffin stream and from the non-normal paraffin stream.
    Type: Application
    Filed: March 11, 2005
    Publication date: September 14, 2006
    Inventors: Lynn Rice, Stephen Sohn, Santi Kulprathipanja
  • Publication number: 20060201884
    Abstract: A sieving membrane comprises a thin, microporous barrier to provide a high flux. The membrane structure can tolerate defects yet still obtain commercially-attractive separations.
    Type: Application
    Filed: March 10, 2006
    Publication date: September 14, 2006
    Inventors: Santi Kulprathipanja, Chunquing Liu, Stephen Wilson, David Lesch, Lynn Rice, David Shecterle, Dale Shields, Stanley Frey
  • Patent number: 7102044
    Abstract: The present invention comprises a process for removal of oxygenates from a paraffin-rich or olefin-rich paraffin stream which comprises passing a feed stream, comprising one or more C10 to C15 feed paraffins or C10 to C15 olefin-rich paraffin stream and one or more oxygenates through an adsorbent bed comprising one or more adsorbents selected from silica gel, activated alumina and sodium x zeolites to remove essentially all of said oxygenates; and recovering said paraffins. A second adsorbent bed may be employed to more thoroughly remove these oxygenates.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: September 5, 2006
    Assignee: UOP LLC
    Inventors: Santi Kulprathipanja, James W. Priegnitz, Stephen W. Sohn, Bryan K. Glover, Bipin V. Vora
  • Publication number: 20060065542
    Abstract: An apparatus and process for producing hydrogen peroxide on an as-needed basis is disclosed. An oxidizing agent is generated for reaction with water to generate hydrogen peroxide.
    Type: Application
    Filed: September 30, 2004
    Publication date: March 30, 2006
    Inventors: Laszlo Nemeth, Anil Oroskar, Santi Kulprathipanja, Gavin Towler, Kurt Vanden Bussche
  • Publication number: 20040116756
    Abstract: The present invention is a process for producing phenyl-alkanes by paraffin adsorptive separation followed by paraffin dehydrogenation and then by alkylation of a phenyl compound by a lightly branched olefin. The adsorptive separation step employs a silicalite adsorbent and, as the desorbent, a C5-C8 linear paraffin, a C5-C8 cycloparaffin, a branched paraffin such as isooctane, or mixtures thereof. The effluent of the alkylation zone comprises paraffins that are recycled to the adsorptive separation step or to the dehydrogenation step. This invention is also a process that that sulfonates phenyl-alkanes having lightly branched aliphatic alkyl groups that to produce modified alkylbenzene sulfonates. In addition, this invention is the compositions produced by these processes, which can be used as detergents having improved cleaning effectiveness in hard and/or cold water while also having biodegradability comparable to that of linear alkylbenzene sulfonates, as lubricants, and as lubricant additives.
    Type: Application
    Filed: September 9, 2003
    Publication date: June 17, 2004
    Inventors: Santi Kulprathipanja, Richard E. Marinangeli, Stephen W. Sohn, Thomas R. Fritsch, R. Joe Lawson
  • Patent number: 6726744
    Abstract: An improved mixed matrix membrane for the separation of gases comprises polyethylene glycol, silicone rubber and activated carbon on a porous support. The membrane preferably also comprises a carbonate such as potassium carbonate. The gases which may be separated by the membrane include mixtures of oxygen and nitrogen and mixtures of carbon dioxide and nitrogen. Membranes of this design may be used in processing natural gas or other gases.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: April 27, 2004
    Assignee: UOP LLC
    Inventors: Santi Kulprathipanja, Jutima Charoenphol
  • Patent number: 6706938
    Abstract: The performance of an adsorptive separation process recovering para-xylene from a C8 aromatic hydrocarbon feed mixture is improved by operating the process at higher desorbent purity. The improved performance allows for tradeoffs in other operating parameters and rates or improved product rates. The process preferably employs a barium and potassium exchanged zeolitic molecular sieve as the adsorbent and toluene as the desorbent.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: March 16, 2004
    Assignee: UOP LLC
    Inventors: Cara M. Roeseler, Santi Kulprathipanja, James E. Rekoske
  • Patent number: 6670519
    Abstract: The amount of the adsorbent needed to recover a set quantity of monomethyl branched C10-C15 paraffins from a mixture comprising normal paraffins and other nonnormal hydrocarbons such as di-isoparaffins, di-isoolefins, naphthenes and aromatics by simulated moving bed adsorptive separation is reduced by adjusting three operating factors: percentage recovery of the paraffin, operating temperature and cycle time. This reduces the capital cost of the process. The recovered monomethyl hydrocarbons may be used to form a monomethyl branched alkylaromatic hydrocarbon useful as a detergent precursor.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: December 30, 2003
    Assignee: UOP LLC
    Inventors: Stephen W. Sohn, Santi Kulprathipanja, James E. Rekoske
  • Patent number: 6617481
    Abstract: The present invention is a process for producing phenyl-alkanes by paraffin adsorptive separation followed by paraffin dehydrogenation and then by alkylation of a phenyl compound by a lightly branched olefin. The adsorptive separation step employs a silicalite adsorbent and, as the desorbent, a C5-C8 linear paraffin, a C5-C8 cycloparaffin, a branched paraffin such as isooctane, or mixtures thereof. The effluent of the alkylation zone comprises paraffins that are recycled to the adsorptive separation step or to the dehydrogenation step. This invention is also a process that sulfonates phenyl-alkanes having lightly branched aliphatic alkyl groups that to produce modified alkylbenzene sulfonates. In addition, this invention is the compositions produced by these processes, which can be used as detergents having improved cleaning effectiveness in hard and/or cold water while also having biodegradability comparable to that of linear alkylbenzene sulfonates, as lubricants, and as lubricant additives.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: September 9, 2003
    Assignee: UOP LLC
    Inventors: Santi Kulprathipanja, Richard E. Marinangeli, Stephen W. Sohn, Thomas R. Fritsch, R. Joe Lawson
  • Publication number: 20030089228
    Abstract: An improved mixed matrix membrane for the separation of gases comprises polyethylene glycol, silicone rubber and activated carbon on a porous support. The membrane preferably also comprises a carbonate such as potassium carbonate. The gases which may be separated by the membrane include mixtures of oxygen and nitrogen and mixtures of carbon dioxide and nitrogen. Membranes of this design may be used in processing natural gas or other gases.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 15, 2003
    Inventors: Santi Kulprathipanja, Jutima Charoenphol
  • Patent number: 6506510
    Abstract: A novel integrated system for the co-production of heat and electricity for residences or commercial buildings is based on the cracking of hydrocarbons to generate hydrogen for a fuel cell. Compared to prior art reforming methods for hydrogen production, the cracking reaction provides an input stream to the fuel cell that is essentially free of CO, a known poison to the anode catalyst in many fuel cell designs, such as PEM fuel cells. The cracking reaction is coupled with an air or steam regeneration cycle to reactivate that cracking catalyst for further use. This regeneration can provide a valuable source of heat or furnace fuel to the system. A novel control method for system adjusts the durations of the cracking and regeneration cycles to optimize the recovery of reaction heat.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: January 14, 2003
    Assignee: UOP LLC
    Inventors: Daniel R. Sioui, Gavin P. Towler, Anil R. Oroskar, Lubo Zhou, Stephen R. Dunne, Santi Kulprathipanja, Leonid B. Galperin, Frank S. Modica, Timur V. Voskoboinikov
  • Patent number: 6506935
    Abstract: For the removal of trace quantities of iodine-containing contaminants from corrosive liquid feed streams (e.g. commercial acetic acid), an adsorbent with distinct advantages over prior-art materials is provided. The overall treatment method involves the use of a suitable zeolite having a silica to alumina molar ratio from about 5 to less than 15 that has been cation-exchanged with an iodine-reactive metal. This inorganic adsorbent may be used in unbound form, or it can be bound with a substantially insoluble porous inorganic refractory metal oxide binder. Reactivation and regeneration techniques, which are generally incompatible with prior-art adsorbent materials, are also disclosed. In general, it is advantageous to pretreat the feed streams to remove the most easily separable contaminants (e.g. iodine, hydrogen iodide, and metal cations) and thereby reduce the iodine compound loading and detrimental effects of metals on the adsorbent. Thus, the expensive iodine reactive metal (e.g.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: January 14, 2003
    Assignee: UOP LLC
    Inventors: Santi Kulprathipanja, Bipin V. Vora, William A. Leet
  • Publication number: 20020103408
    Abstract: The performance of an adsorptive separation process recovering para-xylene from a C8 aromatic hydrocarbon feed mixture is improved by operating the process at higher desorbent purity. The improved performance allows for tradeoffs in other operating parameters and rates or improved product rates. The process preferably employs a barium and potassium exchanged zeolitic molecular sieve as the adsorbent and toluene as the desorbent.
    Type: Application
    Filed: March 15, 2002
    Publication date: August 1, 2002
    Inventors: Cara M. Roeseler, Santi Kulprathipanja, James E. Rekoske
  • Patent number: 6380428
    Abstract: For the removal of trace quantities of iodine-containing contaminants from corrosive liquid feed streams, an adsorbent with distinct advantages over prior-art materials is provided. The treatment method involves the use of a suitable, silica-rich zeolite which has been cation-exchanged with an iodine-reactive metal. This inorganic adsorbent may be used in unbound form, or it can bound with a substantially insoluble porous inorganic refractory metal oxide binder. Reactivation and regeneration techniques, which are generally incompatible with prior-art adsorbent materials, are also disclosed.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: April 30, 2002
    Assignee: UOP LLC
    Inventors: Santi Kulprathipanja, John D. Sherman, Amedeo Napolitano, John Markovs
  • Patent number: 6346645
    Abstract: Carbonyl compounds (e.g. acetone and acetaldehyde) are often present as impurities in oxygenated organic liquids such as acetic acid made by the carbonylation of methanol or in phenol produced by the oxidation of cumene. These impurities can render petrochemical products unsuitable for long-term storage or otherwise adversely affect downstream processing operations. It has now been found that detrimental carbonyl impurities can be easily removed from oxygenated organic liquids by contact with resins having amine functional groups.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: February 12, 2002
    Assignee: UOP LLC
    Inventors: Santi Kulprathipanja, David W. House, Peter R. Pujado
  • Patent number: 6342462
    Abstract: A novel process for the regeneration of a solid adsorbent which is at least partially spent and has a reactive metal (e.g. silver) dispersed thereon is disclosed. The regeneration consists of a step whereby accumulated metal-containing reaction products formed during adsorptive service are removed by stripping the spent or partially spent adsorbent with a suitable stripping solution such as sodium thiosulfate. After detrimental metal-containing deposits are stripped, the adsorbent is then subjected to a reactivation step in which the regenerated adsorbent is contacted with a solution containing a reactive metal compound (e.g. silver nitrate). Reactivating the adsorbent therefore adds an incremental amount of the reactive metal onto the adsorbent. Regeneration of the adsorbent according to the two-step method of the present invention thus effectively prolongs its useful life.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: January 29, 2002
    Assignee: UOP LLC
    Inventor: Santi Kulprathipanja
  • Patent number: 6225518
    Abstract: A molecular sieve used in a process for separating olefinic hydrocarbons from paraffinic hydrocarbons is regenerated in a method which removes diolefins and aromatic hydrocarbons from the molecular sieve. The method comprises contacting the sieve with alkaline water and then drying the sieve with stream of a superheated light paraffin. The molecular sieve may be present in either a guard bed used upstream of a main separation zone or as part of the main adsorptive separation zone.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: May 1, 2001
    Assignee: UOP LLC
    Inventors: Stephen Wayne Sohn, Santi Kulprathipanja