Dual-riser petroleum hydrocarbon feed stock catalytic conversion method and device

A catalytic conversion method and double riser technology are applied in the field of double riser catalytic conversion of petroleum hydrocarbon raw materials, which can solve problems such as increasing the feasibility of engineering implementation, reduce thermal cracking reaction, improve catalytic conversion reaction, and improve oil-agent contact. the effect of the situation
CN102051210BInactive Publication Date: 2014-07-16QINGDAO JINGRUN PETROCHEM DESIGN INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO JINGRUN PETROCHEM DESIGN INST CO LTD
Publication Date
2014-07-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

A catalytic conversion process of petroleum hydrocarbons in double reactor, and apparatus thereof are disclosed. The catalytic conversion process takes place in both the main reactor and the secondary reactor where reaction feedstock is lighter than the former. The first low temperature catalyst is introduced into the pre-lift section of the main reactor, and the said catalyst is conveyed to the oil / catalyst contact reaction section by the pre-lift gas and contacts with the feedstock from the feeding nozzle for the catalytic conversion reaction. The reaction mixture goes up and contacts with the second low temperature catalyst fed to the main reactor above the feeding nozzle, and the catalytic conversion reaction continues in the post-reaction section so as to complete the catalytic conversion reaction of the feedstock from the main reactor. Through flexible control over the reaction condition of the contact reaction section and post-reaction section of the reactor,thermal cracking reaction is effectively reduced, the reacting efficiency of the post-reaction section is improved. Accordingly, the reaction byproduct is effectively reduced and the product distribution is flexibly modified.
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Description

technical field

[0001] The invention relates to the field of petrochemical technology, in particular to a method and device for catalytic conversion of petroleum hydrocarbon raw materials with double risers. Background technique

[0002] Catalytic conversion is an important secondary processing method for petroleum heavy fractions. Almost all existing petroleum hydrocarbon feedstock catalytic conversion devices use riser reactors, and the reaction raw materials are catalytically converted in the riser reactors to form gasoline, diesel, liquefied petroleum gas, etc. Reaction product.

[0003] Conventional catalytic conversion methods and devices use riser reactors, and there are obvious deficiencies in the reaction process. First, the temperature of the regenerated catalyst is relatively high, which limits the ratio of reactants to oil and the preheating temperature of heavy oil. In the existing catalytic conversion reaction process, the reaction raw materials When the oil i...

Claims

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