A method of producing clean gasoline

A gasoline and clean technology, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of rapid catalyst deactivation, excessive methanol addition, and maximum conversion of olefins, etc., to improve liquid recovery and reduce Sulfur content and olefin content, the effect of increasing the content of etherification products

Active Publication Date: 2018-01-05
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 regeneration system for regeneration. The disadvantage is that there is no methanol separation system, so methanol cannot be added in excess, resulting in the maximum conversion of olefins.

Method used

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  • A method of producing clean gasoline
  • A method of producing clean gasoline
  • A method of producing clean gasoline

Examples

Experimental program
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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

A method for producing clean gasoline, comprising: (1) In a refining reactor, under the condition of the presence of hydrogen, gasoline raw materials are contacted with an adsorption desulfurization catalyst to adsorb and remove sulfur compounds in gasoline, and at the same time selectively hydrogenate reaction to remove sulfur compounds. Removal of diolefins in gasoline; (2) The gasoline refined in step (1) is introduced into the etherification reactor, and in the presence of a solid strong acid catalyst, at a temperature greater than 95°C, the olefins in gasoline react with alcohols to form Ether to obtain an etherified gasoline product, the solid strong acid catalyst is a high temperature resistant strong acid catalyst with a heat resistance temperature of 125°C-250°C and an acid center strength greater than H0=-8. The method provided by the invention removes sulfur and dienes in gasoline, greatly increases the content of etherified products in gasoline products, and can obtain clean gasoline products with high octane number.

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 is not more than 50 μg / g, and the olefin content is not more than 25v%. Nearly 80% of gasoline in my country comes from catalytic cracking process, and the remaining gasoline has few components and poor blending ability. However, the content of olefins in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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