Quality improvement method of catalytic cracking gasoline

A technology of catalytic cracking gasoline and heavy gasoline, which is applied in the field of catalytic cracking gasoline upgrading, which can solve the problems of ineffective octane number recovery process, large proportion of hydroprocessing, and inability to effectively improve octane number, etc.
CN104673377AInactive Publication Date: 2015-06-03CHINA UNIV OF PETROLEUM (BEIJING)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (BEIJING)
Publication Date
2015-06-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a quality improvement method of catalytic cracking gasoline. The quality improvement method comprises the following steps of: cutting a gasoline raw material into light, medium and heavy gasoline fractions; desulfurizing the medium gasoline fraction to obtain first desulfurized medium gasoline fraction; carrying out aromatization / hydroisomerization reaction on the first desulfurized medium gasoline fraction in the presence of a catalyst to obtain second desulfurized medium gasoline fraction; carrying out selective hydrodesulfurization on the heavy gasoline fraction to obtain desulfurized heavy gasoline fraction; mixing the light gasoline fraction, the second desulfurized medium gasoline fraction and the desulfurized heavy gasoline fraction to obtain quality improved gasoline, wherein the cutting temperature of the light and medium gasoline fractions is 35-60 DEG C, and the cutting temperature of the medium and heavy gasoline fraction is 70-130 DEG C. The quality improvement method provided by the invention can not only realize the deep desulfurization of the catalytic cracking gasoline, but also be used for outstandingly increasing the octane value.
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Description

technical field

[0001] The invention belongs to the technical field of petrochemical industry, in particular to a method for upgrading the quality of catalytically cracked gasoline. Background technique

[0002] Petroleum resources are becoming increasingly heavy and inferior, and environmental protection requirements are increasing. The world's new environmental protection regulations have stricter requirements on gasoline quality. For example, the national V motor gasoline standard that will be implemented on January 1, 2018 will require the olefin content to be below 24%, the sulfur content to be below 10ppm, and the octane number to be above 93. The improvement of gasoline quality standards is mainly manifested in: while the olefin content and sulfur content are further reduced, the octane number is increased.

[0003] At present, developed countries mainly start from improving the "recipe" to meet the corresponding quality standards. They use a variety of processes to...

Claims

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