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Rare earth catalyst used in preparation of syngas through biomass and coal in supercritical water in co-gasification mode

A technology of supercritical water gasification and rare earth catalysts, which is applied in the fields of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, inorganic chemistry, etc., and can solve the problems of little research and low carbon monoxide content. Achieve the effects of easy handling, easy pressure control and simple preparation process

Inactive Publication Date: 2012-09-12
INNER MONGOLIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the research on supercritical water gasification of biomass focuses on the direction of hydrogen production, but there is little research on supercritical water gasification of biomass to produce syngas, which has the problem of low carbon monoxide content.

Method used

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  • Rare earth catalyst used in preparation of syngas through biomass and coal in supercritical water in co-gasification mode
  • Rare earth catalyst used in preparation of syngas through biomass and coal in supercritical water in co-gasification mode
  • Rare earth catalyst used in preparation of syngas through biomass and coal in supercritical water in co-gasification mode

Examples

Experimental program
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Embodiment 1

[0017] Example 1: 13.00g La (NO 3 ) 3 ·nH 2 O, 5.82g Co(NO 3 ) 2 ·6H 2 O and 7.16g 50%Mn (NO 3 ) 2 The solution was dissolved in deionized water to make a metal nitrate aqueous solution, and then 31.7g of glucose was dissolved in deionized water to form a solution. After mixing the two solutions, the water was evaporated in a constant temperature water bath at 70 °C to form a viscous sol. Dry in the atmosphere for 24h to obtain the dry gel precursor, then calcinate in a muffle furnace at 500℃ for 3h to decompose the organic matter, and finally calcinate at 700℃ in an air atmosphere for 3h to obtain the sample, and the obtained catalyst is used for the synthesis of biomass and coal in supercritical water. Co-gasification reaction. 1.40g biomass, 0.35g coal, 70ml water and 0.35g catalyst were weighed and sieved, and the reaction temperature was controlled at 500°C, the pressure was at 25MPa, and the reaction time was 120min. The experimental operation process is as follo...

Embodiment 2

[0018] Example 2: The catalyst preparation process was the same as that in Example 1, and the obtained catalyst was used for the co-gasification reaction of biomass and coal in supercritical water. Weigh 1.60g biomass, 0.40g coal, add 80ml water, 0.4g catalyst, the reaction temperature is controlled at 450°C, the pressure is 25MPa, the reaction time is 120min, and the operation process is the same as in Example 1.

Embodiment 3

[0019] Example 3: The catalyst preparation process was the same as in Example 1. The obtained catalyst was used for the co-gasification reaction of biomass and coal in supercritical water. 1.60g of biomass and 0.40g of coal were weighed, and 80ml of water and 0.4g of catalyst were added to the reaction. The reaction temperature was controlled at 450° C., the pressure was at 25 MPa, and the reaction time was 90 min. The operation process was the same as in Example 1.

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Abstract

The utility model discloses a rare earth catalyst used in preparation of syngas through biomass and coal in supercritical water in co-gasification mode, in particular to a rare earth catalyst used for catalyzing gasified biomass to coal to prepare the syngas in the supercritical water. The rare earth catalyst selected in the method is rare earth double-perovskite type composite oxide containing lanthanum, cobalt and manganese. The catalyst is used for catalyzing the supercritical water co-gasification reaction of the biomass and the coal to obtain the syngas with the content reaching 63.4%, so that content of carbon monoxide in gas products increases, and content of carbon dioxide is remarkably reduced.

Description

technical field [0001] The present invention relates to a rare earth catalyst for preparing synthesis gas by co-gasification of biomass and coal in supercritical water, in particular to the preparation of synthesis gas by the rare earth catalyst catalytic gasification of biomass and coal in supercritical water. Background technique [0002] As the world's limited petroleum resources are gradually depleted and the awareness of environmental protection continues to increase, research and search for environmentally friendly substitutes for petroleum energy have become one of the world's technological development directions. Biomass, coal and natural gas conversion technology is one of the important ways to diversify to solve the problem of oil resource shortage, and it has become the consensus of experts and scholars. Among them, biomass energy is increasingly favored and valued by countries all over the world as a renewable energy capable of material production. It has the cha...

Claims

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Application Information

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IPC IPC(8): B01J23/889C10J3/00C01B3/40
CPCY02P20/52Y02P20/54
Inventor 胡瑞生张喆张雯娜杨延康宋丽峰刘启业苏海全
Owner INNER MONGOLIA UNIVERSITY
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