Patents by Inventor Harvey D. Schindler

Harvey D. Schindler 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).

  • Patent number: 5292442
    Abstract: A process for disposing of sanitary sewage sludge by producing a pumpable slurry of sewage sludge with or without solid carbonaceous fuel and burning said slurry as fuel in a partial oxidation gas generator, furnace, or boiler. The aqueous slurry of sewage sludge is concentrated by removing water by means of a conventional belt filter press, centrifuge, or hydroclone. The dewatered slurry of sewage sludge is heated by direct contact with steam while air and organic vapors are simultaneously removed, to reduce the pressure in the system; hydrothermally treated in two steps with indirect and direct heat exchange with steam; dewatered by flash evaporation and centrifuging; and burned with or without admixture with solid carbonaceous fuel in a partial oxidation gasifier, furnace, boiler, or incinerator to produce synthesis gas or a hot raw effluent gas stream. In a preferred embodiment, the effluent gas stream is cleaned and purified and non-contaminating ash and slag are separated.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: March 8, 1994
    Assignee: Texaco Inc.
    Inventors: Motasimur R. Khan, Harvey D. Schindler, Christine C. Albert, Stephan J. DeCanio
  • Patent number: 4596650
    Abstract: Sub-bituminous coal is directly liquefied in two stages by use of a liquefaction solvent containing insoluble material as well as 850.degree. F.+ material and 850.degree. F.- material derived from the second stage, and controlled temperature and conversion in the second stage. The process is in hydrogen balance.
    Type: Grant
    Filed: March 16, 1984
    Date of Patent: June 24, 1986
    Assignee: Lummus Crest, Inc.
    Inventors: Harvey D. Schindler, James M. Chen
  • Patent number: 4547282
    Abstract: The coal liquefaction process disclosed uses three stages. The first stage is a liquefaction. The second and third stages are hydrogenation stages at different temperatures and in parallel or in series. One stage is within 650.degree.-795.degree. F. and optimizes solvent production. The other stage is within 800.degree.-840.degree. F. and optimizes the C.sub.5 -850.degree. F. product.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: October 15, 1985
    Assignee: Lummus Crest, Inc.
    Inventor: Harvey D. Schindler
  • Patent number: 4545890
    Abstract: Disclosed is a coal liquefaction process using two stages. The first stage liquefies the coal and maximizes the product while the second stage hydrocracks the remainder of the coal liquid to produce solvent.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: October 8, 1985
    Assignee: Lummus Crest, Inc.
    Inventors: Harvey D. Schindler, James M. Chen
  • Patent number: 4544476
    Abstract: In a two-stage liquefaction, hydrogenated 850.degree. F.+ residuum from the second stage is used in formulating the first stage liquefaction solvent.
    Type: Grant
    Filed: December 7, 1983
    Date of Patent: October 1, 1985
    Assignee: The Lummus Company
    Inventors: Raymond H. Long, Harvey D. Schindler
  • Patent number: 4522700
    Abstract: In a two-stage liquefaction wherein coal, hydrogen and liquefaction solvent are contacted in a first thermal liquefaction zone, followed by recovery of an essentially ash free liquid and a pumpable stream of insoluble material, which includes 850.degree. F.+ liquid, with the essentially ash free liquid then being further upgraded in a second liquefaction zone, the liquefaction solvent for the first stage includes the pumpable stream of insoluble material from the first liquefaction stage, and 850.degree. F.+ liquid from the second liquefaction stage.
    Type: Grant
    Filed: August 13, 1984
    Date of Patent: June 11, 1985
    Assignee: The Lummus Company
    Inventor: Harvey D. Schindler
  • Patent number: 4439313
    Abstract: Arsenic is removed from a hydrocarbon containing arsenic as an impurity; e.g., shale oil, by contact with hydrogen in the presence of a contact material, such as coke, to deposit the arsenic on the contact material. The arsenic deposited on the contact material is subsequently reacted with an iron compound to produce an iron-arsenic compound suitable for disposal.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: March 27, 1984
    Assignee: The Lummus Company
    Inventors: Harvey D. Schindler, Morgan C. Sze
  • Patent number: 4434048
    Abstract: A catalyst for hydrotreating of heavy feedstocks comprised of nickel and molybdenum, supported on alumina having a defined pore size distribution which has been calcined at a temperature of from 1150.degree. F. -1300.degree. F. Calcining of such catalyst at such temperatures is required in order to provide for effective use thereof as a hydrotreating catalyst for higher boiling feedstocks.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: February 28, 1984
    Assignee: The Lummus Company
    Inventor: Harvey D. Schindler
  • Patent number: 4414141
    Abstract: A catalyst for hydrotreating of heavy feedstocks comprised of nickel and molybdenum, supported on alumina having a defined pore size distribution which has been calcined at a temperature of from 1150.degree. F.-1300.degree. F. Calcining of such catalyst at such temperatures is required in order to provide for effective use thereof as a hydrotreating catalyst for higher boiling feedstocks.
    Type: Grant
    Filed: March 31, 1982
    Date of Patent: November 8, 1983
    Assignee: The Lummus Company
    Inventor: Harvey D. Schindler
  • Patent number: 4316792
    Abstract: Coal is catalytically hydroliquefied by passing coal dispersed in a liquefaction solvent and hydrogen upwardly through a plurality of parallel expanded catalyst beds, in a single reactor, in separate streams, each having a cross-sectional flow area of no greater than 255 inches square, with each of the streams through each of the catalyst beds having a length and a liquid and gas superficial velocity to maintain an expanded catalyst bed and provide a Peclet Number of at least 3. If recycle is employed, the ratio of recycle to total feed (coal and liquefaction solvent) is no greater than 2:1, based on volume. Such conditions provide for improved selectivity to liquid product to thereby reduce hydrogen consumption. The plurality of beds are formed by partitions in the reactor.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: February 23, 1982
    Assignee: The Lummus Company
    Inventors: Morgan C. Sze, Harvey D. Schindler
  • Patent number: 4227995
    Abstract: A metal containing hydrocarbon feedstock, such as a heavy residue, is contacted with hydrogen and a material characterized by low porosity, less than 0.3 cc/gram; low surface area, less than 5 m.sup.2 /g; high average pore diameter, greater than 1,000 Angstroms; and a high distribution of large pores, at least 40%, and preferably 50 to 80% of pores greater than 10,000 Angstroms. A preferred material is coke.
    Type: Grant
    Filed: December 6, 1978
    Date of Patent: October 14, 1980
    Assignee: The Lummus Company
    Inventors: Morgan C. Sze, Harvey D. Schindler
  • Patent number: 4207268
    Abstract: Methane is oxychlorinated to one or more chlorinated methanes, without net production of carbon tetrachloride, by contacting methane and chlorine and/or hydrogen chloride with a molten mixture of cuprous chloride, cupric chloride, and copper oxychloride, in the presence of an amount of carbon tetrachloride which inhibits net production thereof.
    Type: Grant
    Filed: March 30, 1978
    Date of Patent: June 10, 1980
    Assignee: The Lummus Company
    Inventors: Morgan C. Sze, Herbert Riegel, Harvey D. Schindler
  • Patent number: 4207267
    Abstract: 1,2-Dichlorethane is dehydrochlorinated by direct contact with a molten salt including the higher and lower valent forms of a multivalent metal chloride and generally also the oxychloride of the metal with ethane being present to increase selectivity to vinyl chloride.
    Type: Grant
    Filed: April 2, 1975
    Date of Patent: June 10, 1980
    Inventor: Harvey D. Schindler
  • Patent number: 4107222
    Abstract: Methane is oxychlorinated to one or more chlorinated methanes, without net production of carbon tetrachloride, by contacting methane and chlorine and/or hydrogen chloride with a molten mixture of cuprous chloride, cupric chloride, and copper oxychloride, in the presence of an amount of carbon tetrachloride which inhibits net production thereof.
    Type: Grant
    Filed: November 11, 1975
    Date of Patent: August 15, 1978
    Assignee: The Lummus Company
    Inventors: Morgan C. Sze, Herbert Riegel, Harvey D. Schindler
  • Patent number: 4059503
    Abstract: A nitrogen containing feedstock is hydrodenitrified by passing the feed through at least two hydrodenitrification zones, with ammonia produced in the hydrodenitrification being purged from the system prior to the last hydrodenitrification zone to maintain a low ammonia partial pressure in the last hydrodenitrification zone. The ammonia is preferably purged by stripping ammonia from the liquid portion of the effluent withdrawn from the next to last hydrodenitrification zone. Improved denitrification is obtained by maintaining a low ammonia partial pressure in the last hydrodenitrification zone.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: November 22, 1977
    Assignee: The Lummus Company
    Inventors: Morgan C. Sze, Harvey D. Schindler, Anthony Fanelli
  • Patent number: 4045504
    Abstract: Process for coupling an alkane to either an alkane, alkene, aliphatic carboxylic acid, or aromatic hydrocarbon by effecting contacting thereof and a melt containing a multivalent metal halide in both its higher and lower valance state. In accordance with a preferred embodiment, the contacting is effected in the presence of an oxygen containing gas or the melt is previously contacted with an oxygen containing gas to produce the corresponding oxyhalide of the metal, whereby the reaction may be effected on a continuous basis.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: August 30, 1977
    Assignee: The Lummus Company
    Inventors: Maurice E. Brooks, Herbert Riegel, Harvey D. Schindler, Morgan C. Sze
  • Patent number: 4036776
    Abstract: A molten mixture containing the higher and lower valent forms of a multivalent metal chloride; in particular, cuprous and cupric chloride, is contacted with oxygen, and aqueous hydrogen chloride recycle, to recover the chlorine values by generation of the higher valent metal chloride and also effect oxidation of the melt by production of the oxychloride. The gas withdrawn from the oxidation contains hydrogen chloride, chlorine and water vapor, with the hydrogen chloride being separate from the gas as aqueous hydrogen chloride and recycle to the oxidation. The chlorine and water vapor in the gas are contacted with activated carbon to produce hydrogen chloride, which is separated as aqueous hydrogen chloride and recycled to the oxidation.
    Type: Grant
    Filed: February 10, 1976
    Date of Patent: July 19, 1977
    Assignee: The Lummus Company
    Inventors: Herbert D. Riegel, Harvey D. Schindler, Vincent A. Strangio
  • Patent number: 3965202
    Abstract: All or a portion of chlorinated hydrocarbons convertible to trichloroethylene and/or perchloroethylene by chlorination, dehydrochlorination or dehydrogenation and optionally also dechloroination are recovered from a C.sub.2 chlorinated hydrocarbon waste stream and contacted with a molten mixture of, for example, cuprous chloride, cupric chloride and copper oxychloride and hydrogen chloride and/or chlorine, to produce an effluent which contains as reaction product trichloroethylene and/or perchloroethylene. Chlorinated components in the waste stream not contacted with the molten mixture can be burned and the chlorine values used to enrich the chlorine content of the melt.
    Type: Grant
    Filed: June 20, 1973
    Date of Patent: June 22, 1976
    Assignee: The Lummus Company
    Inventors: Herbert Riegel, Morgan C. Sze, Harvey D. Schindler
  • Patent number: 3947489
    Abstract: Process for coupling an alkane to either an alkane, alkene, aliphatic carboxylic acid, or aromatic hydrocarbon by effecting contacting thereof and a melt containing a multivalent metal halide in both its higher and lower valence state. In accordance with a preferred embodiment, the contacting is effected in the presence of an oxygen containing gas or the melt is previously contacted with an oxygen containing gas to produce the corresponding oxyhalide of the metal, whereby the reaction may be effected on a continuous basis.
    Type: Grant
    Filed: October 23, 1968
    Date of Patent: March 30, 1976
    Assignee: The Lummus Company
    Inventors: Maurice E. Brooks, Herbert Riegel, Harvey D. Schindler, Morgan C. Sze