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Method and system for producing clean gasoline from sulfur-containing light oil

A light gasoline, clean technology, applied in hydrocarbon oil treatment products, hydrocarbon oil treatment, petroleum industry, etc., can solve problems such as octane number loss, achieve the effects of octane number increase, low hydrogen consumption, and improved distillation range distribution

Active Publication Date: 2022-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009]As described in the above patent application, the method of adsorption desulfurization of gasoline is mainly: adsorption of sulfur to basic metal oxides under the action of hydrogen and metal accelerators Among them, although zeolite can be loaded for isomerization and aromatization to try to increase the octane number, but the main thing that happens is the olefin saturation reaction, which will still cause the loss of octane number

Method used

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  • Method and system for producing clean gasoline from sulfur-containing light oil
  • Method and system for producing clean gasoline from sulfur-containing light oil
  • Method and system for producing clean gasoline from sulfur-containing light oil

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preparation example Construction

[0080] The silicon oxide source can be the silicon oxide source commonly used in the preparation of binders in the art, such as diatomaceous earth, expanded perlite, kaolin, siliceous rock, layered clay, hydrolyzed silica, macroporous oxide One or more of silicon and silica gel.

[0081] According to the present invention, the amount of the alumina source and the silica source is preferably such that the content of the binder in the resulting catalyst is within the range described above, preferably such that the weight ratio of alumina and silica in the binder is 100: 20-300, preferably 100:40-200, more preferably 100:50-150. For example, the weight ratio of the alumina source to the silica source is 100:50-240, preferably 100:60-200, more preferably 100:66-160.

[0082] According to the invention, the binder precursor slurry is acidified, wherein the acid preferably brings the binder precursor slurry to a pH of 1-5. The acid may be one or more of organic acids and inorganic...

Embodiment 1

[0161] This example is used to illustrate the adsorption desulfurization and hydrocarbon conversion catalyst and its preparation method of the present invention.

[0162] (1) 1.18kg of USY molecular sieves (purchased from Sinopec Catalyst Qilu Branch, with a dry basis content of 1.12kg), and ZSM-5 molecular sieve 0.22kg (purchased from Sinopec Catalyst Qilu Branch with a dry basis content of 1.18kg) 0.18kg), zinc oxide powder (purchased from Headhorse Company, purity 99.7%, 3.3kg) and 6.0kg deionized water were mixed, and after stirring for 30 minutes, a mixed slurry containing USY molecular sieve, ZSM-5 molecular sieve and zinc oxide was obtained;

[0163] (2) 1.20kg of kaolin (purchased from the S1 series of Suzhou Kaolin Factory, with a dry basis content of 1.15kg) and 0.52kg of pseudoboehmite (purchased from China Aluminum Shandong Branch, with a dry basis content of 0.49kg) were stirred and mixed , then add 3.6kg of deionized water and mix evenly, then add 300mL of hydroc...

Embodiment 2

[0168] This example is used to illustrate the adsorption desulfurization and hydrocarbon conversion catalyst and its preparation method of the present invention.

[0169] (1) 1.5 kg of PREHY molecular sieve (purchased from Sinopec Catalyst Qilu Branch, with a dry basis content of 1.41 kg), and ZRP molecular sieve 0.23 kg (purchased from Sinopec Catalyst Qilu Branch with a dry basis content of 0.19 kg) ), magnesium oxide powder (purchased from Weifang Lihe Powder Technology Co., Ltd., with a purity of more than 95%, 3.8kg) and 6.65kg of deionized water were mixed, and after stirring for 30 minutes, a mixed slurry containing PREHY molecular sieve, ZRP molecular sieve and magnesium oxide was obtained ;

[0170] (2) 1.06kg of expanded perlite (purchased from Gongyi Mantanghong Abrasives Factory, dry basis content is 0.94kg, 30-60 mesh) and pseudo-boehmite 0.92kg (purchased from China Aluminum Shandong Branch, Dry basis content is 0.85kg) in stirring and mixing, then add 2.8kg dei...

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Abstract

The invention relates to the fields of adsorption desulfurization and hydrocarbon conversion, and discloses a method and system for producing clean gasoline from sulfur-containing light oil. The method includes: entering the first rectification tower into light sulfur-containing light raw materials and cutting them into light gasoline and heavy gasoline , heat the mixture flow of heavy gasoline and light gasoline and hydrogen source respectively, and send them to the first reaction section and the second reaction section of the pressurized fluidized bed reactor respectively to contact with the catalyst for reaction, and send the product stream to High-pressure separation is carried out in the high-pressure separator, and the obtained light component stream is separated and treated to obtain a circulating hydrogen stream, which is recycled as a part of the hydrogen source, and the obtained heavy component stream is sent to the second rectification tower for rectification treatment. Separation of liquefied gas and gasoline. The method and system for producing clean gasoline from sulfur-containing light oil of the present invention are suitable for prolific production of low-sulfur, high-octane gasoline and liquefied gas over a long period of time, and the liquid yield is high.

Description

technical field [0001] The invention relates to the field of adsorption desulfurization and hydrocarbon conversion, in particular to a method and system for producing clean gasoline from sulfur-containing light oil. Background technique [0002] The sulfur removal process of sulfur-containing gasoline raw materials mainly includes hydrodesulfurization and adsorbent desulfurization, both of which are carried out in a hydrogen-containing reaction atmosphere. The depth of sulfur removal is positively correlated with olefin saturation, and the octane number loss of existing sulfur removal processes is between 1.0 and 3.0. In order to increase the yield of gasoline, the existing catalytic cracking unit adopts the method of increasing the recycling ratio of light cycle oil, but it causes the problems of increasing the distillation range of gasoline and the content of aromatics. According to the gasoline standard GB 17930-2016, the 50% temperature point of gasoline is lowered from...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00
CPCC10G67/00C10G2300/202C10G2300/70C10G2400/02
Inventor 于敬川毛安国刘宪龙郭大为
Owner CHINA PETROLEUM & CHEM CORP
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