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

Abstract

The invention discloses a combination process and device for biomass oil modification and C4 hydrocarbon catalytic pyrolysis. Main technical characteristics of the combination process are as follows: a catalytic pyrolysis modifying process of biomass oil and a catalytic pyrolysis reaction regenerating process of C4 hydrocarbons are combined; a spent catalyst with high coke content of a biomass oil catalytic pyrolysis modifying reactor and a spent catalyst with low coke content of a C4 hydrocarbon catalytic pyrolysis reactor enter a regenerator to be mixed and regenerated; and the regenerated catalysts respectively enter the biomass oil catalytic pyrolysis modifying reactor and the C4 hydrocarbon catalytic pyrolysis reactor to be recycled. By using the combination process and the device, the biomass oil with low quality can be converted into biomass oil with high quality in high efficiency; the excess heat of the biomass oil catalytic pyrolysis modifying device is used in the C4 hydrocarbon catalytic pyrolysis reaction process lack of heat so as to increase the yield of ethylene propylene.

Description

technical field [0001] The invention belongs to the field of catalytic conversion of biomass oil and petroleum hydrocarbons, in particular, relates to catalytic cracking and upgrading of biomass oil and C 4 The combined process technology of the catalytic cracking process of hydrocarbons, in particular, relates to a high-efficiency combined fluidized catalytic reaction process and device of a dual-reaction regeneration system. Background technique [0002] Biomass, as the only renewable energy that can be directly converted into liquid fuel, has received attention both at home and abroad. Among the various ways of biomass thermochemical conversion, fast pyrolysis is considered to be one of the most promising biomass conversion pathways. Biomass oil, the liquid product obtained from rapid pyrolysis of biomass, has high energy density, convenient storage and transportation, and is expected to replace traditional fossil fuels, which has important research value and strategic s...

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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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