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Catalytic gasification of organic matter in supercritical water

A technology of supercritical water and organic matter, applied in the direction of physical/chemical process catalyst, gasification process, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of incomplete conversion, complex and expensive process equipment, etc. Achieve easy storage and transportation, reduce complexity and cost, and improve quality

Inactive Publication Date: 2012-09-12
YEDA RES & DEV CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is known to be performed at high temperatures of at least 800°C, requiring complex and expensive process equipment
Unfavorable side effects in this method are incomplete conversion and generation of charcoal residues

Method used

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  • Catalytic gasification of organic matter in supercritical water
  • Catalytic gasification of organic matter in supercritical water
  • Catalytic gasification of organic matter in supercritical water

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Embodiment Construction

[0083] The present invention provides a suitable catalyst system for converting organic matter with high efficiency and in a relatively short time. It is understood that under SCWG conditions, when known systems of said type are operated for a long time, the efficiency of the catalyst is reduced due to the oxidation of the metal components in the process environment, the sintering of metal particles, the formation of coke and tar, and the decomposition of the matrix.

[0084] Alkaline catalysts (such as sodium carbonate) [9] have been used to increase the gasification efficiency of cellulose. Known such as K 2 CO 3 , KOH, NaOH and Na 2 CO 3 and other bases can also catalyze the water gas shift reaction to form H 2 and CO 2 (instead of CO). Other catalysts such as Pt and Pd with lower activity were also tested. Copper, molybdenum, tungsten, chromium and zinc metals were also tested, although these also showed very low levels of catalytic activity. such as CeO 2 , (CeZr...

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Abstract

The present invention discloses a catalyst system comprising at least one metal and an oxide support, said oxide support comprising at least one of Al2O3, MnxOy, MgO, ZrO2, and La2O3, or any mixtures thereof; said catalyst being suitable for catalyzing at least one reaction under supercritical water conditions. The present invention also provides a system for producing a high-pressure product gas under super-critical water conditions. The system comprises a pressure reactor accommodating a feed mixture of water and organic matter; a solar radiation concentrating system heating the pressure reactor and elevating the temperature and the pressure of the mixture to about the water critical temperature point and pressure point or higher.; The reactor is configured and operable to enable a supercritical water process of the mixture to occur therein for conversion of the organic matter and producing a high-pressure product fuel gas.

Description

technical field [0001] The invention relates to supercritical water gasification, in particular to catalytic gasification of organic matter in supercritical water. [0002] references [0003] For understanding the background of the present invention, the following references are considered relevant: [0004] 1. Matsumura, Y. et al (2005) Biomass gasification in near-and super-critical water: tatus and prospects Biomass Bioenergy 29, 269-292 [0005] 2. Clifford, T. (1998) Fundamentals of Supercritical Fluids. Oxford University Press, New York. [0006] 3. Gasafi E., Meyer L., and Schebek L (2007) Exergetic efficiency and opyions for inproving sewage sludge gasification in supercritical water. Int. J. Energy Res. 31, 346-363 [0007] 4. Sondreal E.A et al (2001) Review of advances in combustion technology and biomass cofiring. Fuel Processing Tech. 71, 7-38 [0008] 5. Hao X., Guo 1. Zhang X, Guan Y. (2005) Hydrogen production from catalytic gasification of cellulose in su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/00B01J3/00
CPCB01J23/462B01J23/6562C10J3/00C10J2300/0979C10J2300/0986C10J2300/1292Y02E20/16C10K1/005C10J2300/1671Y02P20/145Y02P20/582Y02P20/52Y02E50/30Y02P20/133Y02P20/54
Inventor M·爱泼斯坦A·克里巴斯A·贝尔曼
Owner YEDA RES & DEV CO LTD
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