Hydroisomerization-catalytic cracking technology of catalytic cracking diesel oil

A technology for catalytic cracking of diesel oil and hydroisomerization, which is applied in hydrotreating process, petroleum industry, processing of hydrocarbon oil, etc., can solve the problem of difficulty in obtaining high-value low-carbon olefin products, etc., and achieve excellent product quality, increase value, The effect of high product yield
CN110437875AActive Publication Date: 2019-11-12CNOOC TIANJIN CHEM RES & DESIGN INST +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CNOOC TIANJIN CHEM RES & DESIGN INST
Publication Date
2019-11-12

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Abstract

The invention discloses a catalytic cracking diesel oil hydroisomerization-fluid catalytic cracking method, which comprises: 1) mixing catalytic cracking diesel oil and hydrogen, making the obtained mixture enters a section of hydrogenation reaction devices connected in series, and carrying out a hydrorefining-hydroisomerization reaction, wherein the hydrogenation reaction devices are sequentiallyfilled with a hydrogenation protecting agent, a hydrorefining catalyst and a hydroisomerization catalyst; and 2) making the hydroisomerized diesel oil enter a fluidized bed catalytic cracking device,and carrying out a catalytic cracking reaction. According to the present invention, with the method, low-carbon olefins and clean fuel oil are produced by using catalytic cracking diesel oil, and under the complete conversion of catalytic cracking diesel oil, the low-carbon olefin content in the product is more than 35 wt%, and the aromatic hydrocarbon content in the gasoline distillate is more than 50 wt%, such that the value of catalytic cracking diesel oil can be significantly increased.
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Description

technical field

[0001] The invention is a method for producing low-carbon olefins and clean fuel oil products by catalytic cracking diesel oil hydroisomerization-catalytic cracking. Background technique

[0002] Under the situation of developing low-carbon economy, circular economy and realizing sustainable development, the pace of upgrading the quality of oil products in my country has been significantly accelerated, and the quality requirements for clean oil products are becoming more and more stringent. At present, with the aggravation of heavy and inferior crude oil, the output of catalytic cracking diesel oil is increasing year by year, and the quality is deteriorating day by day. In order to extract more light oil products from crude oil, refining and chemical enterprises have continuously improved the processing capacity and operating severity of catalytic cracking units, resulting in further deterioration of the quality of catalytic cracked diesel oil, mainly manifes...

Claims

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