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Treating method for gasoline

A processing method and gasoline technology, which are applied in the fields of hydrocarbon oil processing products, hydrocarbon oil processing, hydrotreating processes, etc., can solve the problems of gasoline octane number loss, etc., so as to improve octane number, reduce investment cost, and reduce gasoline vapor. pressure effect

Active Publication Date: 2018-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially when dealing with gasoline feedstock with high olefin content and high sulfur content, it still causes a large loss of gasoline octane number

Method used

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  • Treating method for gasoline
  • Treating method for gasoline
  • Treating method for gasoline

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0048] A specific embodiment, based on the dry weight of the adsorption desulfurization catalyst and based on the weight of oxides, the zinc oxide in the adsorption desulfurization catalyst accounts for 10-90% by weight, and the silicon dioxide accounts for 5-85% by weight. %, aluminum oxide accounts for 5-30% by weight; based on the dry basis weight of the adsorption desulfurization catalyst and calculated by element weight, the content of the desulfurization active metal in the adsorption desulfurization catalyst is 5-30% by weight.

[0049] According to the present invention, the adsorption desulfurization catalyst may also contain 1-10% by weight of coke-like substances. Industrial practice shows that the carbon content on the adsorption desulfurization catalyst has an impact on the desulfurization efficiency of the adsorption desulfurization catalyst and the loss of gasoline octane number. With the increase of the carbon content of the adsorption desulfurization catalyst, ...

specific Embodiment approach

[0051] A specific embodiment, the preparation process of the molecular sieve with MFI structure can include ammonia exchange, phosphorus modification, metal component modification and roasting treatment steps, more specifically, the molecular sieve with MFI structure obtained by conventional crystallization The sodium type molecular sieve according to the molecular sieve: ammonia salt: H 2 The weight ratio of O=1:(0.1-1):(5-10) is exchanged at room temperature to 100° C. for 0.3-1 hour and then filtered to introduce phosphorus-containing compounds and compounds selected from Fe, Co, Ni, Zn, Mn, The molecular sieve is modified by one or more compounds of Ga and Sn, and then calcined at 400-800° C. for 0.5-8 hours, wherein the calcining process can also be carried out under a water vapor atmosphere. Furthermore, for the molecular sieve with MFI structure provided by the present invention, the molecular sieve can be modified by impregnation or ion exchange during the preparation ...

Embodiment 1

[0071] The heavy gasoline fraction coded as HCN-A is mixed with an adsorption desulfurization catalyst FCAS and an aromatization catalyst OTAZ-C-3 (OTAZ-C-3 accounts for 7% of the total weight of the catalyst) in a small continuous fluidized bed reactor Mixed catalysts are contacted to carry out adsorption desulfurization and aromatization reactions. The operating conditions are: the reaction temperature is 400°C, the reactor pressure is 2.1MPa, and the weight hourly space velocity of the heavy gasoline fraction is 6 hours -1 , the volume ratio of hydrogen to heavy gasoline fraction is 75. The desulfurization and aromatization products obtained from the top of the reactor are cooled and separated to obtain tail gas and heavy gasoline products (referred to as HCN-A heavy gasoline products, the same below, see Table 4 for properties). The regeneration temperature of the mixed catalyst is 550°C, and the regenerated mixed catalyst is returned to the reactor for recycling.

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Abstract

The invention relates to a treating method for gasoline. The treating method comprises the following steps: cutting a raw gasoline material so as to obtain a light gasoline fraction and a heavy gasoline fraction; subjecting the light gasoline fraction to etherification so as to obtain etherified oil; and conveying the heavy gasoline fraction to a fluidization reactor for contacting with a mixed catalyst and carrying out desulphurization and aromatization in the presence of hydrogen so as to obtain a heavy gasoline product, wherein the mixed catalyst comprises an adsorption desulphurization catalyst and an olefin aromatization catalyst. The method provided by the invention can reduce the contents of sulfur and olefins in gasoline and maintain the octane number of the gasoline and high gasoline yield.

Description

technical field [0001] The invention relates to a method for treating gasoline. Background technique [0002] Air pollution caused by vehicle exhaust emissions is becoming more and more serious. As people pay more and more attention to environmental protection, my country has accelerated the pace of upgrading the quality of vehicle fuel. The national standard GB17930-2013 requires that the sulfur content in gasoline should not exceed 10 μg / g, and the olefin volume fraction should not exceed 24%. [0003] FCC gasoline is the main component of motor gasoline in my country, accounting for about 75% in the gasoline pool, and its characteristic is that it has high olefin and sulfur content. It is not difficult to use hydrogenation technology to achieve deep desulfurization of gasoline and reduce the olefin content in FCC gasoline, but since olefin is a high-octane component, a large reduction in its content will lead to a serious loss of gasoline octane, thus affecting Due to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/14
CPCC10G67/14C10G2300/104C10G2300/1044C10G2300/202C10G2300/305C10G2400/02
Inventor 刘秀良许友好王新
Owner CHINA PETROLEUM & CHEM CORP
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