FCC gasoline cleaning method

A cleaning and gasoline technology, applied in chemical instruments and methods, petroleum industry, processing of hydrocarbon oil, etc., can solve problems such as the large difference of catalysts in gasoline upgrading process, reduce recracking reaction, increase octane number, improve catalyst active effect

Active Publication Date: 2018-12-25
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the different composition and content of specific gasoline raw materials, as well as differ

Method used

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  • FCC gasoline cleaning method
  • FCC gasoline cleaning method
  • FCC gasoline cleaning method

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Embodiment Construction

[0056] 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.

[0057] 1. Preparation of prehydrogenation catalyst

[0058] (1) Preparation of prehydrogenation catalyst 1

[0059] 1. Preparation of tungsten-doped lanthanum ferrite with micro-mesoporous

[0060] 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.

[0061] 2. Preparation of alumina carrier

[0062] Add citric acid to 2.2g of micro-mesoporous tungsten-doped lanthanum ferrite for later use, add 30...

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Abstract

The invention relates to a FCC gasoline cleaning method. The method includes that under action of a prehydrogenation catalyst, catalytic cracking gasoline is in mercaptan etherification and double-bond isomerization reaction through a prehydrogenation reactor, prehydrogenation reaction efflux is cut and fractionated into light and heavy gasoline fraction, the light gasoline fraction is in superimposition reaction under action of a superimposition catalyst, the heavy gasoline fraction is subjected to selective hydrodesulfurization under action of a hydrodesulfurization-isomerization catalyst, and linear-chain olefin is isomerized to be single-branch-chain olefin or single-branch-chain paraffin; the heavy gasoline fraction after reaction enters an octane value restoration unit for double-branche-chain isomerization reaction under action of an isomerization catalyst; blending the light and heavy gasoline fraction to obtain a clean gasoline product with low olefin, ultralow sulfur contentand high octane value.

Description

technical field [0001] The invention relates to a method for cleaning FCC gasoline. Background technique [0002] FCC gasoline is made from C 4 -C 12 According to the differences in the nature of crude oil and processing routes of various refineries, FCC gasoline is composed of 18-55v% olefins and 12-20v% aromatics. and alkanes, the octane characteristics of each component are aromatics>alkenes≈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 producing ultra-low sulfur and high-octane gasoline. The production method includes: making infe...

Claims

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Application Information

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IPC IPC(8): C10G67/02B01J29/48
CPCB01J29/48C10G67/02C10G2300/202
Inventor 鲍晓军岳源源王廷海王学丽刘杰袁珮朱海波白正帅
Owner FUZHOU UNIV
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