Combination process and device for biomass oil modification and C4 hydrocarbon catalytic pyrolysis

Abstract

The invention discloses a combined process and device for biomass oil upgrading and C4 hydrocarbon catalytic cracking. Its main technical features are: the catalytic cracking and upgrading process of biomass oil and the regeneration process of catalytic cracking reaction of C4 hydrocarbons are combined together, the spent catalyst with high coke content in the catalytic cracking and upgrading reactor of biomass oil and the catalytic cracking reaction of C4 hydrocarbons The raw catalyst with low coke content in the regenerator enters the regenerator for mixing and then regenerates, and the regenerated catalyst enters the biomass oil catalytic cracking upgrading reactor and the C4 hydrocarbon catalytic cracking reactor for recycling. Using the present invention, low-quality biomass oil can be efficiently converted into high-quality biomass oil; and the excess heat of the biomass oil catalytic cracking and upgrading device can be used for the catalytic cracking reaction process of C4 hydrocarbons with insufficient heat to increase the production of ethylene propylene .

Description

Technical field [0001] The present invention belongs to the catalytic transformation of biomass oils and petroleum hydrocarbons. Specifically, it is involved in the catalytic catalytic cracking and C and C 4 The combination process technology of the hydrocarbon catalytic cracking process, especially the high -efficiency combined fluidization catalytic reactions and devices of a dual reaction regeneration system. Background technique [0002] As the only renewable energy source that can be directly transformed into liquid fuel, biomass has received the attention of domestic and foreign.In the various methods of biomass thermal chemical transformation, rapid cracking is considered one of the most promising biomass transformation pathways.The liquid product obtained by the rapid cracking of biomass — biomass oil, high energy density, convenient storage and transportation, and is expected to replace traditional fossil fuels, which has important research value and strategic significan...

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Problems solved by technology

[0007] Patent CN1432626 discloses a method for catalytic cracking of refined bio-oil, using a modified HZSM-5 catalyst to remove excess oxygen in bio-oil to obtain high-quality refined bio-oil; but this technology is carried out in a fixed-bed reactor, The process cannot be carried out continuously, and the problems of high carbon deposition and long life of the catalyst have not been solved

CN101358138 discloses a method for upgrading the quality of heavy components in biomass oil by supercritical catalytic reaction, which requires high investment and cannot be carried out continuously

CN101558135 discloses a continuous method for fluid catalytic cracking of oxygen-containing hydrocarbon compounds such as glycerol and bio-oil, and the economical efficiency of the technology needs to be improved

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