Method for producing clean gasoline

A gasoline and clean technology, used in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of excessive methanol addition, rapid catalyst deactivation, and inability to achieve maximum conversion of olefins, reducing sulfur content and olefins. The effect of increasing the liquid yield and increasing the content of etherified products

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the etherification raw material has not been pretreated, and the catalyst deactivates quickly, so it needs to be continuously sent to the catalytic cracking reaction

Method used

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  • Method for producing clean gasoline
  • Method for producing clean gasoline
  • Method for producing clean gasoline

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0048] The preparation method of the adsorption and refining catalyst: put a certain amount of diatomite and zinc oxide into a grinder to grind into powder, mix the mixture with deionized water and make a slurry to obtain a slurry with a solid content of 30wt%, and then add a certain amount of aluminum sol, and adjust the pH value to about 3 with hydrochloric acid, then stir at 75°C for 2.5h, cool down to 60°C, and spray-dry to shape; after drying at 150°C for 4 hours, bake at 650°C for 2h to make a carrier; The granules are impregnated with a nickel nitrate solution to produce an impregnated granule mixture; the impregnated granule mixture is dried at 150°C for 2 hours, then calcined at 600°C for 2 hours, and then pressed into tablets to form 1-3mm granules to obtain Adsorption of refined catalysts. Among them: the weight ratio of diatomite, aluminum sol, zinc oxide and nickel nitrate is SiO 2 :Al 2 o 3 : ZnO: Ni=2:1:5:1.

Embodiment 1

[0054] Example 1 illustrates the effect of a method for producing clean gasoline provided by the present invention.

[0055] Attached image 3 The procedure shown was tested. The whole distillate gasoline first enters the refining reactor for desulfurization and dediene under the condition of hydrogen, and then enters the fractionating tower for fractionation into light gasoline fraction and heavy gasoline fraction. After the light gasoline fraction is washed with water, it enters the etherification reactor and reacts with alcohol to form etherified gasoline , the excess methanol enters the methanol extraction tower to recover methanol. The etherified light gasoline fraction and the heavy gasoline fraction are mixed to obtain a clean gasoline product.

[0056] Gasoline raw material is the same as Comparative Example 1. The refining reactor is filled with the adsorption refining catalyst prepared in Preparation Example 1, and the operating conditions are: the reaction temper...

Embodiment 2

[0058] Example 1 illustrates the effect of a method for producing clean gasoline provided by the present invention.

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Abstract

The invention discloses a method for producing clean gasoline. The method comprises the following steps: (1) making a gasoline raw material contact an adsorption desulfurization catalyst in a refining reactor in the presence of hydrogen, adsorbing and removing sulfides from the gasoline, and meanwhile, performing selective hydrogenation to remove diene from the gasoline;(2) introducing the gasoline refined in the step (1) into an etherification reactor, reacting olefin in the gasoline with alcohol to generate ether to obtain an etherified gasoline product in the presence of a solid high-acid catalyst at the temperature of higher than 95 DEG C, wherein the solid high-acid catalyst is a high-temperature-resistant high-acid catalyst with the heat-resistance temperature of 125 DEG C to 250 DEG C and the acid site strength H0 greater than minus 8. According to the method provided by the invention, sulfur and the diene are removed from the gasoline, the etherate content of a gasoline product is greatly improved, and a clean gasoline product with high octane rating can be obtained.

Description

technical field [0001] The present invention relates to a method for refining gasoline, more specifically, relates to a method for refining and etherifying gasoline to produce clean gasoline products. technical background [0002] In recent years, with the increasingly stringent environmental protection regulations, the restrictions on olefin content and sulfur content in gasoline have become increasingly stringent in countries and regions around the world, and the market demand for high-grade gasoline has also increased with the development of the automobile market. From July 1, 2010, my country will gradually implement the National IV emission standard nationwide. The standard requires that the sulfur content in gasoline should not exceed 50μg / g, and the olefin content should not exceed 25v%. Nearly 80% of the gasoline in my country comes from the catalytic cracking process, and the remaining gasoline has few components and poor blending ability. However, the olefin conten...

Claims

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Application Information

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IPC IPC(8): C10G67/00
Inventor 袁清毛俊义温朗友侯栓弟张占柱秦娅黄涛
Owner CHINA PETROLEUM & CHEM CORP
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