Method and device for preparing aromatic hydrocarbons and olefins by catalytic hydrogenation coupled catalytic cracking of bio-oil

Abstract

Method and apparatus for preparing an arene and an olefin by means of catalytic hydrogenation coupled with catalytic cracking of a bio-fuel. The device comprises a biomass thermal cracking fuel preparation unit (100), a bio-fuel stratification unit (200), a catalytic hydrogenation unit (300), a bio-fuel catalytic cracking unit (400), and a separation and purification unit (500). The bio-fuel stratification unit (200) produces a light fuel and a heavy fuel. The light fuel is hydrogenated in the catalytic hydrogenation unit (300) to obtain a liquid product, and the liquid product is mixed with the heavy fuel from the bio-fuel stratification unit (200), followed by catalytic cracking. The resulting products are separated and purified to give a high-purity arene and olefin. The present invention achieves complete catalytic hydrogenation and catalytic cracking of all components of a bio-fuel, and avoids loss of catalytic properties due to catalyst coking.

Description

technical field [0001] The invention discloses a method and a device for preparing aromatic hydrocarbons and olefins by using bio-oil catalytic hydrogenation coupling catalytic cracking, and relates to the fields of biomass resource utilization and low-temperature and low-pressure catalytic hydrogenation. Background technique [0002] Fossil energy such as oil, coal, and natural gas are the main energy sources in today's society. With the development of industrialization, the world's demand for energy is increasing with time. In the 21st century, in the face of the shortage and non-renewable problems of fossil fuel energy and the severe situation of environmental pollution and greenhouse effect caused by the use of fossil fuels, the development of renewable new energy and environmentally friendly energy has shown its necessity and urgency. Compared with other renewable energy sources, such as wind energy, solar energy, tidal energy, and hydropower, etc., biomass energy has a...

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Problems solved by technology

[0006] The present invention aims to solve the problem that the catalyst is easy to coke and lose catalytic performance during the process of upgrading the quality of bio-oil by thermochemical catalytic method for all components of bio-oil, which brings about the problem of reduced process stability and continuity, and aims at the problem of bio-oil The heavy oil phase and light oil phase components are separately upgraded by thermochemical catalytic conversion, and the utilization of all components of bio-oil has not been realized. A device and method for jointly performing catalytic cracking of light oil components and bio-oils to prepare aromatic components and olefin components, that is, a device and method for producing aromatic hydrocarbons and olefins by using catalytic hydrogenation coupled catalytic cracking of bio-oil

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