Catalyst carrier for cracking of biological tar, catalyst and preparation method

A catalyst carrier, tar cracking technology, applied in the direction of catalyst carrier, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problems of difficult long-term stable use, short life, description of tar removal effect, etc. Effect of carbon capacity, high mechanical strength, good high temperature stability
CN113117716AActive Publication Date: 2021-07-16CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2021-07-16

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Abstract

The invention discloses a catalyst carrier for biological tar cracking, a catalyst and a preparation method. The catalyst carrier for biological tar cracking takes a silicon carbide-silicon nitride composite material as a matrix, silicon oxide is distributed on the matrix, and the preparation method comprises the following steps: firstly, preparing the silicon carbide-silicon nitride composite material; then making the composite material contact with oxygen-containing gas for treatment, and conducting cooling to obtain a carrier intermediate A; and conducting mixing with an alkaline solution or a hydrofluoric acid solution, conducting washing, carrying out low-temperature heat treatment, and carrying out high-temperature heat treatment to obtain the biological tar cracking catalyst carrier. The invention also provides the catalyst adopting the carrier. The catalyst for biological tar cracking is good in wear resistance, high in activity, high in microwave absorption rate, good in thermal shock resistance and high in water resistance at high temperature, and the preparation method is simple, low in cost, resistant to sintering and carbon deposition and capable of being recycled for a long time.
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Description

technical field

[0001] The invention belongs to the technical field of biomass energy processing, and in particular relates to a catalytic material for preparing oil and gas products through catalytic pyrolysis of biomass and realizing tar conversion and a preparation method thereof. Background technique

[0002] The composition of bio-tar is complex, containing a variety of unstable compounds, and carrying solid particles and water, which lead to its characteristics of easy polymerization, high adhesion, unstable properties, high pollution, and difficult to use. A series of problems caused by it have become limitations. One of the main obstacles to the development and industrialization of biomass gasification technology.

[0003] At present, there are many kinds of biomass tar removal methods with different advantages and disadvantages, among which catalytic cracking method is a kind of tar removal method with great development potential. The temperature of the bio-tar cra...

Claims

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