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Method for preparing benzene liquid-phase product by virtue of catalytic cracking of wood-plastic composite

A wood-plastic composite material and catalytic cracking technology, applied in the field of biomass energy utilization, can solve the problems of long reaction period, high production cost, high requirements for reaction equipment and reaction conditions, and achieve short reaction period, resource saving and reaction conditions. less demanding effects

Active Publication Date: 2015-04-22
四川绿玉君科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the technical problems of high requirements on reaction equipment and reaction conditions, long reaction cycle and high production cost in the existing method for preparing benzene-based products, and provides a method for preparing benzene-based liquid-phase products by catalytic cracking of wood-plastic composite materials

Method used

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  • Method for preparing benzene liquid-phase product by virtue of catalytic cracking of wood-plastic composite
  • Method for preparing benzene liquid-phase product by virtue of catalytic cracking of wood-plastic composite
  • Method for preparing benzene liquid-phase product by virtue of catalytic cracking of wood-plastic composite

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specific Embodiment approach 1

[0016] Specific embodiment 1: In this embodiment, a method for preparing benzene-based liquid phase products by catalytic cracking of wood-plastic composite materials is carried out according to the following steps:

[0017] 1. Under anaerobic conditions, control the temperature at 450°C to 700°C, pyrolyze the wood-plastic composite material, and then separate the gas and solid to obtain high-temperature pyrolysis gas;

[0018] 2. Pass the high-temperature pyrolysis gas obtained in step 1 into a reactor equipped with zeolite molecular sieves for catalytic reaction, and then condense the pyrolysis gas to obtain a benzene-based liquid phase product.

specific Embodiment approach 2

[0019] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the wood-plastic composite material described in step 1 is a composite material of lignocellulose and thermoplastic polymer, wherein the lignocellulose is wood flour, straw or rice Shell, the thermoplastic polymer is PE, PP or PS. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0020] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the mass ratio of lignocellulose and thermoplastic polymer in the wood-plastic composite material described in step 1 is (50-70):(50-30). Others are the same as in the second embodiment.

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Abstract

The invention provides a method for preparing a benzene liquid-phase product by virtue of catalytic cracking of a wood-plastic composite and relates to the field of the utilization of the biomass energy. The method is mainly used for solving the technical problems that the existing benzene product preparation method has high requirements on reaction equipment and reaction conditions, long reaction period and high production cost. The method comprises the steps of pyrolysis, reaction and condensation. According to the method, the pyrolysis gas of the wood-plastic composite is directly and catalytically cracked in the presence of a zeolite molecular sieve catalyst; the provided method is simple in process, low in requirements on reaction equipment and reaction conditions, and relatively short in reaction period. The method is used for preparing the benzene series liquid-phase product.

Description

technical field [0001] The invention relates to the field of utilization of biomass energy. Background technique [0002] Wood-plastic composite (WPC) is a kind of wood fiber material as reinforcement or filler, thermoplastic polymer (such as polyolefin PE, PP, PS, etc.) Extrusion, injection molding, hot pressing and other processes) processed composite materials. It has the advantages of both wood and plastic, and has outstanding comprehensive performance. It can be produced from wood processing residues (or straw) and waste plastics, and can be recycled and reprocessed many times. It is an environmentally friendly material with remarkable ecological and economic benefits. , are widely used in many fields. [0003] Rapid pyrolysis liquefaction technology is a process in which biomass and waste plastics are thermally decomposed under anoxic conditions, and liquid bio-oil is obtained through rapid condensation. The bio-oil obtained after pyrolysis of wood-plastic composite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C07C15/04C07C15/06C07C15/08C07C1/00
CPCC07C1/00C07C15/04C07C15/06C07C15/08C10G1/00C10G2300/1003
Inventor 王清文孙剑平谭顺张志军隋淑娟林晓娜
Owner 四川绿玉君科技股份有限公司
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