Method of producing off-gas having a selected ratio of carbon mo

Chemistry: fischer-tropsch processes; or purification or recover – Liquid phase fischer-tropsch reaction

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518703, C07C 2700, C07C 2710

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055786472

ABSTRACT:
A method of producing an off-gas with a selected CO/H.sub.2 ratio of from about 0.1 to about 8 and a CO/CO.sub.2 ratio of at least about 0.1 by hydrothermal processing is provided. The method comprises the step of contacting a reactant capable of producing CO and H.sub.2 under hydrothermal conditions at a temperature of at least about 374.degree. C. and a pressure of at least about 22.1 MPa in the presence of water and with an amount of an additive effective to produce the selected CO/H.sub.2 ratio. The contacting is for a time sufficient to produce off-gas having the selected CO/H.sub.2 ratio and having a CO/CO.sub.2 ratio of at least about 0.1. Presence of the additive may enhance or may reduce the ratio of carbon monoxide to hydrogen in the off-gas. The additive may be an acid, a base, a salt, an oxide, or an oxidant. The off-gas having a selected CO/H.sub.2 ratio may be used for synthesis of organic compounds.

REFERENCES:
patent: 3716474 (1973-02-01), Hess et al.
patent: 3948754 (1976-04-01), McCollum et al.
patent: 3984311 (1976-10-01), Diesen et al.
patent: 4141829 (1979-02-01), Thiel et al.
patent: 4212735 (1980-07-01), Miller
patent: 4251227 (1981-02-01), Othmer
patent: 4327239 (1982-04-01), Dorrance
patent: 4465888 (1984-08-01), Paspek, Jr.
patent: 4473459 (1984-09-01), Bose et al.
patent: 4483761 (1984-11-01), Paspek, Jr.
patent: 4543190 (1985-09-01), Modell
patent: 4559127 (1985-12-01), Paspek, Jr.
patent: 4594141 (1989-06-01), Paspek, Jr. et al.
patent: 4792408 (1986-12-01), Titmas
patent: 4818370 (1989-04-01), Gregoli et al.
patent: 4840725 (1989-06-01), Paspek
patent: 4861497 (1989-08-01), Welch et al.
patent: 4898107 (1990-02-01), Dickinson
patent: 5057220 (1991-10-01), Harada et al.
patent: 5100560 (1992-03-01), Huang
patent: 5133877 (1992-07-01), Rofer et al.
patent: 5200093 (1993-04-01), Barner et al.
patent: 5232604 (1993-08-01), Swallow et al.
Baker et al., "Catalytic Destruction of Hazardous Organics in Aqueous Wastes: Continuous Reactor System Experiments," Hazardous Waste & Hazardous Materials, 6(1):87-94, 1989.
Crain et al., "Kinetics and Reaction Pathways of Pyridine Oxidation in Supercritical Water," Ind. Eng. Chem. Res., 32(10):2259-2268, 1993.
Huppert et al., "Hydrolysis in Supercritical Water: Identification and Implications of a Polar Transition State," Ind. Eng. Chem. Res., 28:161-165, 1989.
Klein et al., "Hydrolysis in Supercritical Water: Solvent Effects as a Probe of the Reaction Mechanism," J Supercritical Fluids, 3:222-227, 1990.
McBrayer et al., "Research and Development of a Commercial Supercritical Water Oxidation Process," Proceedings of the Eleventh Annual Environmental Management and Technology Conference/International, Atlantic City, NJ, Jun. 9-11, 1993.
McKendry et al., "The Effective of Additives on the Oxidation of Dimethyl Methylphosphonate in Supercritical Water," Abstract, Industrial Waste Conference, Purdue University, West Lafayette, Indiana, May 9-11, 1994.
Tester et al., "Supercritical Water Oxidation Technology: A Review of Process Development and Fundamental Research" ACS Symposium Series Paper., Oct. 1-3, Atlanta, Georgia, 1993.
Townsend et al., "Solvent Effects during Reactions in Supercritical Water", Ind. Eng. Chem. Res., 27:143-149, 1988.
Baillod et al., "Fate of Specific Pollutants During Wet Oxidation and Ozonation," Environ. Prog., 1(3), 217-227, 1982.
Day et al., "Oxidation of Propionic Acid Solutions," Can. J. Chem. Eng. 51, 733-740, 1973.
Conditt and Sievers, "Microanalysis of Reaction Products in Sealed Tube Wet Air Oxidations by Capillary Gas Chromatography," Anal. Chem., 56:2620-2622, 1984.
Corcoran, "Pyrolysis of n-Butane," Pyrolysis: Theory and Industrial Practice, 47-69, 1983.
United States Environmental Protection Agency, "Gas-Phase Chemical Reduction," Demonstration Bulletin, EPA/540/MR-93/522, 1993.
Fisher, "Oxidation of Sewage With Air at Elevated Temperatures," Water Research, 5:187-201, 1971.
Hurwitz et al., "Wet Air Oxidation of Sewage Sludge," Water & Sewage Works, 112(8):298-305, 1965.
Irick, "Manufacture via Hydrocarbon Oxidation," In Acetic Acid and its Derivatives, Ed. by Agreda and Zoeller, Marcel Dekker, Inc., New York, 1993.
Keen and Baillod, "Toxicity to Daphnia of the End Products of Wet Oxidation of Phenol and Substituted Phenols," Water Res., 19(6):767-772, 1985.
McConnell and Head, "Pyrolysis of Ethane and Propane," Pyrolysis: Theory and Industrial Practice, Ch. 2, 25-47, 1983.
McGinnis et al., "Conversion of Biomass into Chemicals with High-Temperature Wet Oxidation," Ind. Eng. Chem. Prod. Res., 22(4):633-636, 1983.
Partin and Heise, "Bioderived Acetic Acid," Ch. 1, 3-15, 1993.
Taylor and Weygandt, "A Kinetic Study of High Pressure Aqueous Oxidations of Organic Compounds Using Elemental Oxygen," Can. J. Chem., 52:1925-1933, 1974.
Teletzke et al., "Components of Sludge and Its Wet Air Oxidation Products," Journal WPCF, 39(6):994-1005, 1967.
Turner, "Supercritical Water Oxidation of Dimethyl Methylphosphonate and Thiodiglycol," Ph.D. Dissertation, Civil Engineering Department, The University of Texas at Austin, Austin, Texas, 1994.
Webley et al., "Oxidation Kinetics of Ammonia and Ammonia-Methanol Mixtures in Supercrital Water in the Temperature Range 530-700 C. at 246 bar," Ind. Eng. Chem. Res., 30:1745-1754, 1991.
"ECO Waste Technologies and the Huntsman Corporation Host an Introduction to SCWO Technology and a Tour of Their SWCO Facilities," Separations Update, p. 3, Center for Energy Studies, University of Texas at Austin, Tischler, C., ed., Summer 1994.
Ladendorf, K., "Company hopes treatment cuts waste," Austin American-Statesman, pp. D1-D3, Aug. 25, 1994.
LeBlanc et al., "Production of Methanol," Methanol Production and Use, pp. 73-113, Ch. 3.3, Chen et al., eds., Marcel Dekker, Inc., New York, 1994.
Zoeller, J. R., "Manufacture via Methanol Carbonylation," Acetic Acid and its Derivatives, pp. 35-51, Agreda et al., eds., Marcel Dekker, Inc., New York, 1993.
Gustafson and Zoeller, "Other Synthesis Gas-Based Acetic Acid Processes," Acetic Acid and its Derivatives, pp. 53-60, Agreda et al., eds., Marcel Dekker, Inc., New York, 1993.
Herman, R. G., ed., Catalytic Conversation of Synthesis Gas and Alcohols to Chemicals, pp. 37-283, Plenum Press, New York, 1984.

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