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A kind of fcc gasoline mercaptan etherification method

A mercaptan ether and gasoline technology, which is applied in chemical instruments and methods, cracking, hydrocarbon oil treatment, etc., can solve the problems of difficult control of catalyst product quality, high catalyst composition and content, and no thioetherification catalyst involved. The effect of low alkane loss, strong oil adaptability and high catalyst activity

Active Publication Date: 2020-12-15
博兴兴业精细化工产业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patent does not involve more information about thioetherification catalysts
[0006] The composition and content of the above-mentioned catalysts are relatively large, the preparation process is complicated, and it is difficult to control the quality of catalyst products produced in large quantities

Method used

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  • A kind of fcc gasoline mercaptan etherification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Preparation of nickel-doped lanthanum ferrite

[0026] Under stirring conditions, dissolve 2.51mol lanthanum nitrate in 120mL water, add citric acid and stir to dissolve; then add 4.79mol iron nitrate, then add 190g sodium polyacrylate, then add 42g nickel nitrate aqueous solution, continue stirring for 30min, after drying Drying, roasting and grinding to obtain nickel-doped lanthanum ferrite.

[0027] 2. Preparation of silica-alumina carrier

[0028]Dissolve 5g of sodium polyacrylate in nitric acid, then add 38g of microsilica powder and 50g of pseudoboehmite powder, and stir evenly to obtain a mixture of microsilica powder-pseudoboehmite-sodium polyacrylate (abbreviated silicon-aluminum-organic mixture) , take 1 / 8 of the amount for later use, and add citric acid to 4.5g of nickel-doped lanthanum ferrite for later use. Add 300g of pseudo-boehmite powder and 25.0g of fenugreek powder into the kneader, add nitric acid, then add 40.2g of sodium polyacrylate nitric ac...

Embodiment 2

[0034] The preparation of nickel-doped lanthanum ferrite is the same as in Example 1, except that 260g of sodium polyacrylate is added, and the preparation of the silica-alumina carrier is the same as in Example 1. The silica-alumina carrier contains 4.4wt% of silicon oxide, 5.7wt% % nickel-doped lanthanum ferrite, 1.6wt% potassium, carrier mesopores accounted for 64.2% of the total pores, and macropores accounted for 25.6% of the total pores. The unit content of sodium polyacrylate in the alumina precursor is 3 times higher than the content of sodium polyacrylate in the silicon source-organic polymer mixture. The preparation of the composite carrier is the same as in Example 1, and the preparation method of catalyst 2 is the same as in Example 1.

Embodiment 3

[0036] The preparation of nickel-doped lanthanum ferrite is the same as in Example 1, except that 220g of polyacrylic acid is added, and the preparation of the silica-alumina carrier is the same as in Example 1. The silica-alumina carrier contains 8.4wt% of silicon oxide, 2.6wt% Nickel-doped lanthanum ferrite, 0.8wt% potassium, the carrier mesopores account for 54.6% of the total pores, and the macropores account for 33.5% of the total pores. The unit content of polyacrylic acid in the alumina precursor is 3.3 times higher than that in the silicon source-organic polymer mixture. The preparation of the composite carrier is the same as in Example 1, and the preparation method of catalyst 3 is the same as in Example 1.

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Abstract

The invention relates to a FCC gasoline mercaptan etherification method. A fixed bed reactor is adopted, gasoline is introduced into the reactor, under the action of a catalyst, mercaptan in the gasoline and dialkene carry out etherification reactions, and the catalyst comprises a composite carrier and metal active components: nickel, molybdenum and magnesium. The reaction conditions are: reactionpressure 0.1-5 MPa, volume ratio of hydrogen to oil 2:1-30:1, reaction temperature 60-200 DEG C, and air speed 0.5-8 h<-1>. The catalyst has the characteristics that the mercaptan etherification activity is high and the loss of octane value is low and can adapt to various raw materials.

Description

technical field [0001] The invention relates to an FCC gasoline mercaptan etherification method. Background technique [0002] With the increasingly stringent environmental protection regulations, countries around the world have put forward more and more stringent requirements on the quality of petroleum processed products, especially the stricter restrictions on the sulfur content of petroleum processed products. The sulfides contained in light petroleum products are mainly mercaptans (RSH), sulfides (RSR), etc. Among them, mercaptans have the greatest impact on product quality, not only have a foul smell, strong corrosiveness, but also affect Product stability. [0003] In recent years, the thioetherification method has been widely used to remove mercaptans in hydrocarbon fractions of refineries, that is, to remove mercaptans by using the reaction between components in the raw material. Specifically, some hydrocarbon fractions contain mercaptans and highly reactive olefi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/10C10G11/02B01J29/48
CPCB01J29/48B01J2229/18C10G11/02C10G11/10C10G2300/202
Inventor 张素珍黄志祥张丽娥黄凤玉
Owner 博兴兴业精细化工产业发展有限公司
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