FCC gasoline upgrading method

A gasoline and upgrading technology, which is applied in the petroleum industry, processing hydrocarbon oil, hydrocarbon oil treatment products, etc., can solve the problems of large catalyst differences in gasoline upgrading process, reduce re-cracking reaction, improve activity selectivity, and improve gasoline yield. high rate effect

Active Publication Date: 2018-12-28
FUZHOU UNIV
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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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  • FCC gasoline upgrading method
  • FCC gasoline upgrading method
  • FCC gasoline upgrading method

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Embodiment Construction

[0052] The present invention is further described in detail by examples below, but these examples should not be considered as limiting the present invention. The raw material reagents used in the present invention are all commercially available products.

[0053] 1. Preparation of prehydrogenation catalyst

[0054] (1) Preparation of prehydrogenation catalyst 1

[0055] 1. Preparation of tungsten-doped lanthanum ferrite with micro-mesoporous

[0056] 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.

[0057] 2. Preparation of alumina carrier

[0058] Add citric acid to 2.2g of micro-mesoporous tungsten-doped lanthanum ferrite for later use, add ...

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Abstract

The invention relates to a FCC gasoline upgrading method. FCC gasoline is subjected to a mercaptan etherification and double-bond isomerism reaction under the action of a prehydrogenation catalyst bya prehydrogenation reactor, a prehydrogenation reaction effluent is cut into light and heavy gasoline fractions, the light gasoline fraction is subjected to isomerization reaction under the action ofan isomerization catalyst, the heavy gasoline fraction is subjected to selective hydrodesulfurization under the action of a hydrodesulfurization-isomerization catalyst, and simultaneously, linear olefin is isomerized into single branched olefin or single branched paraffin; then, the heavy gasoline fraction after the reaction enters an octane number recovery unit and is in contact with an octane number recovery catalyst to be subjected to a double branched isomerization reaction; finally, the light and heavy gasoline fractions are blended to obtain a clean gasoline product with low olefin content, ultra low sulfur content and a high octane number.

Description

technical field [0001] The invention relates to a method for upgrading FCC gasoline. 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 in my country need to carry the triple mission goals of desulfurization, olefin reduction and octane maintenance. [0003] CN201010224554.1 provides a method for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2300/305C10G2300/202C10G2400/02Y02P20/584
Inventor 鲍晓军王廷海岳源源王学丽刘杰袁珮朱海波白正帅
Owner FUZHOU UNIV
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