Lignin catalytic cracking device and catalytic cracking method

Abstract

The invention discloses a lignin catalytic cracking device and a catalytic cracking method thereof, comprising a feeding device, a hot gas inlet, a hot gas chamber, a pyrolysis chamber, a heat conduction partition, a decarbonization chamber and a catalytic cracking chamber, the feeding device and the catalytic cracking chamber The lower part of the pyrolysis chamber is connected. The hot gas inlet is connected to one end of the hot gas chamber. The pyrolysis gas outlet at the upper part is connected with the decarburization chamber, and the decarburization gas outlet at the upper part of the decarburization chamber is connected with the lower part of the catalytic cracking chamber, and the upper part of the catalytic cracking chamber is provided with a catalytic gas outlet and an upper cover plate. The invention realizes the integration of pyrolysis, decarburization and catalysis, reasonably uses heat, eliminates the coking problem in the process of gas flow, and effectively controls the temperature of the catalyst and the failure of carbon deposition of the catalyst through the unique catalytic cracking chamber, ensuring Efficient and stable catalytic cracking of lignin.

Description

technical field [0001] The invention belongs to the fields of biomass energy and forestry chemical industry, and in particular relates to a lignin catalytic cracking device and a catalytic cracking method thereof. Background technique [0002] The content of lignin in lignocellulosic biomass ranks second, and lignin-derived biomass oil or chemicals can greatly improve the economics of the entire biomass refining process, due to the unique structure and rich aromatic units of lignin content, has been considered as a potential raw material for the production of biomass aromatic compounds. [0003] At present, the technology of pyrolysis of lignin under the catalytic action of various catalysts to produce high-quality chemicals has gradually started in the field of biomass material technology, and has become a research hotspot at home and abroad. Lignin is pyrolyzed to produce biomass oil, which is then catalytically cracked to produce high-quality chemicals. Many scholars at...

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Problems solved by technology

The research on catalyst persistence is mainly because the carbon deposition of the catalyst affects the catalytic effect, which reduces the catalytic effect. Many scholars have studied that adding additives such as methanol in the catalytic process can help reduce carbon deposition. However, in actual production, adding additives not only costs High, and it is difficult to realize the process equipment

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