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Catalyst for catalytic cracking gasoline prehydrogenation and preparation method thereof

A technology for catalytic cracking of gasoline and pre-hydrogenation, which is applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, molecular sieve catalysts, etc., and can solve the problems of large differences in catalysts in the gasoline upgrading process.

Active Publication Date: 2020-07-07
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the different composition and content of specific gasoline raw materials, as well as different gasoline product standards, the gasoline upgrading process and catalysts used are also quite different.

Method used

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  • Catalyst for catalytic cracking gasoline prehydrogenation and preparation method thereof
  • Catalyst for catalytic cracking gasoline prehydrogenation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Preparation of tungsten-doped lanthanum ferrite with micro-mesoporous

[0028] Under stirring conditions, 2.2mol La(NO 3 ) 3 Dissolve in 100mL water, add citric acid and stir to dissolve; then add 4.2mol Fe(NO 3 ) 3 , and then add 160g of sodium polyacrylate, then add an aqueous solution containing 10g of ammonium metatungstate, continue stirring for 30min, and obtain micro-mesoporous tungsten-doped lanthanum ferrite through drying, roasting and grinding.

[0029] 2. Preparation of alumina carrier

[0030] Add citric acid to 2.2g of micro-mesoporous tungsten-doped lanthanum ferrite for later use, add 300g of pseudo-boehmite powder and 20.0g of scallop powder into the kneader, mix well, then add nitric acid and 8g of sodium polyacrylate, Knead evenly, then add micro-mesoporous tungsten-doped lanthanum ferrite, mix evenly, and knead-extrude into a clover shape. Dry at 120° C. for 8 hours, and calcined at 700° C. for 4 hours to obtain an alumina carrier 1 containin...

Embodiment 2

[0034] 1. Preparation of tungsten-doped lanthanum ferrite

[0035] Under stirring conditions, 2.2mol La(NO 3 ) 3 Dissolve in 100mL water, add citric acid and stir to dissolve; then add 4.2mol Fe(NO 3 ) 3 , then add an aqueous solution containing 10g of ammonium metatungstate, continue to stir for 30 minutes, and obtain tungsten-doped lanthanum ferrite through drying, roasting and grinding.

[0036] 2. Preparation of alumina carrier

[0037] Add citric acid to 2.2g of tungsten-doped lanthanum ferrite, add 300g of pseudoboehmite powder and 20.0g of scallop powder into the kneader, and mix well, then add nitric acid and 8g of sodium polyacrylate, knead evenly, and then Add tungsten-doped lanthanum ferrite, mix well, and knead-extrude into a clover shape. Dry at 120° C. for 8 hours, and calcined at 700° C. for 4 hours to obtain alumina carrier 2 containing tungsten-doped lanthanum ferrite. The carrier pore structure is shown in Table 1.

[0038] 3. Preparation of catalyst ...

Embodiment 3

[0041] The preparation of the carrier is the same as in Example 1, except that the micro-mesoporous tungsten-doped lanthanum ferrite accounts for 6 wt% of the carrier. The preparation of the supported catalyst was the same as in Example 1, using the activated montmorillonite as the aluminum source. The difference is that the active components are molybdenum and tungsten, and the main composition of the catalyst 3: the alumina support of micro-mesoporous tungsten-doped lanthanum ferrite is 75.6wt%, the content of alumina is 4.0wt%, and the content of silicon oxide is 4.0wt%. , molybdenum oxide 10.1wt%, tungsten oxide 6.3wt%.

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Abstract

The invention relates to a catalytic cracking gasoline prehydrogenation catalyst, which includes a carrier and an active component. The carrier includes an alumina composite carrier with a macroporous structure and a catalyst selected from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-35, One or more of mordenite, amorphous silica alumina, SAPO‑11, MCM‑22, Y molecular sieve or beta molecular sieve, one or more of the active components cobalt, molybdenum, nickel and tungsten are loaded on the surface of the carrier, In terms of oxides, the active component content is 0.1~15.5%. The catalyst of the invention is used to remove dienes and isomerize double bonds at the same time; and saturates the remaining dienes. The reaction products are then passed through desulfurization, octane number recovery and other reaction units to produce low olefins, ultra-low sulfur content, and high octane number cleaning products. Gasoline, which meets the National VI standards.

Description

technical field [0001] The invention relates to a catalytic cracking gasoline prehydrogenation catalyst and a preparation method thereof, which are used for producing clean gasoline with low olefin, ultra-low sulfur content and high octane number. Background technique [0002] FCC gasoline is a mixture composed of C4-C12 hydrocarbons and trace amounts of sulfides, oxides and metal arsenides. According to the differences in crude oil properties and processing routes of various refineries, FCC gasoline is composed of 18-55v% olefins , 12-20v% mixture of aromatics and alkanes, the octane number characteristics of each component are aromatics > olefins ≈ isoparaffins > alkanes. In my country, FCC gasoline with high sulfur content, high olefin content and low octane number accounts for about 70%, while the proportion of alkylated oil, isomerized oil and reformed oil with low sulfur content, low olefin content and high octane number This makes the cleanliness of FCC gasoline...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/888B01J29/26B01J29/48B01J29/78B01J35/10C10G45/04C10G45/08C10G45/12C10G45/34C10G45/38
CPCC10G45/04C10G45/08C10G45/12C10G45/34C10G45/38B01J23/8885B01J29/26B01J29/48B01J29/7815B01J2229/18C10G2300/202C10G2400/02C10G2300/305B01J35/615B01J35/635B01J35/651B01J35/647
Inventor 王廷海鲍晓军岳源源王学丽刘杰白正帅朱海波袁珮
Owner FUZHOU UNIV
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