A treatment method for catalytic cracking regenerated flue gas

A technology for catalytic cracking and flue gas regeneration, which is applied in the direction of non-catalytic thermal cracking, cracking, petroleum industry, etc., can solve the problems of complex post-treatment of pollutants and catalyst dust, large energy recovery loss, etc., and achieve increased liquid yield, transmission Enhanced heat capacity and reduced coking effect
CN105586066BActive Publication Date: 2017-09-29CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2017-09-29

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Abstract

The invention provides a treatment method for catalytic cracking regenerated flue gas. The method comprises atomizing the heavy oil coking raw material with a temperature of 50-400°C, and then mixing the atomized heavy oil coking raw material with a temperature of 490-750°C. The deoxygenated flue gas is contacted so that the atomized heavy oil coking raw material reaches the coking temperature and undergoes a coking reaction, and the deoxygenated flue gas is a gas obtained by deoxygenating the catalytic cracking regenerated flue gas. The treatment method of catalytic cracking regenerated flue gas provided by the present invention can not only utilize the kinetic energy and thermal energy of catalytic cracking regenerated flue gas to the greatest extent and save the steps of desulfurization, denitrification and dust removal of catalytic cracking regenerated flue gas, but also can reduce or even completely avoid coking In the process, the coking in the furnace tube of the heating furnace can be improved and the liquid yield can be improved, which has great industrial application prospects.
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Description

technical field

[0001] The invention relates to a treatment method for catalytic cracking regenerated flue gas. Background technique

[0002] In the fluidized catalytic cracking (FCC) process, the raw oil and the catalyst are quickly contacted in the riser for catalytic cracking reaction, and the coke generated by the reaction is deposited on the catalyst to cause its deactivation, and the deactivated catalyst enters after stripping The regenerator performs char regeneration. The temperature of the flue gas generated by regeneration can be as high as about 700°C, and the energy taken away by it in the catalytic cracking unit can account for about a quarter of the energy consumption of the whole unit. The energy recovery efficiency of the regenerative flue gas also directly affects the energy consumption of the entire device.

[0003] At present, the energy recovery method of catalytic cracking regenerated flue gas is still the combined recovery method of flue gas turbine a...

Claims

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