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A kind of preparation method of alkylated gasoline

A technology for alkylating gasoline and isobutane, which is applied in chemical instruments and methods, organic chemistry, processing hydrocarbon oil, etc., can solve the problems of difficult recycling and other problems, and achieves convenient separation, little basic corrosion of equipment, and easy recycling. Effect

Active Publication Date: 2020-06-09
台州正铭智能家居科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acid strength has a significant impact on the alkylation reaction of isobutane and butene, and the ionic liquids currently used in the production of alkylated gasoline are all mononuclear ionic liquids, but their reaction stability and thermal stability need to be further strengthened , and not easy to recycle
Compared with traditional ionic liquids, loaded dual-nuclear multi-acidic ionic liquids have the advantages of high acid density, strong structural stability, high reaction stability, and easy recycling. At present, there is no relevant application of dual-nuclear ionic liquids in the preparation of alkylated gasoline. to report

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Preparation of 1# catalyst:

[0032] a) At room temperature, mix 1,6-dibromohexane and morpholine at a molar ratio of 1:2, stir for 60 minutes under a nitrogen atmosphere, and then continue to drop 1,4-butane into it sultone, and it was transferred to a microwave reactor at 60°C for 60min at a power of 300W, then it was vacuum filtered, washed 5 times with anhydrous acetone, and finally vacuum-dried at 70°C to obtain Intermediate product Z; wherein the molar ratio of 1,4-butane sultone and morpholine is 1:1;

[0033] b) Add concentrated sulfuric acid to the intermediate product Z dropwise at room temperature, wherein the molar ratio of concentrated sulfuric acid to intermediate product Z is 2:1, stir at room temperature for 1 hour to mix thoroughly, and then transfer it to a hydrothermal reaction vessel treated at 100°C for 6h; the liquid obtained after the reaction was washed 4 times with anhydrous acetone, and then vacuum-dried at 60°C for 2h to obtain ionic liqui...

Embodiment 2

[0044] 1) Preparation of 2# catalyst:

[0045] a) At room temperature, mix 1,6-dibromohexane and morpholine at a molar ratio of 1:2, stir for 30 minutes under a nitrogen atmosphere, and then continue to drop a certain amount of 1,4 -butane sultone, and transfer it to a microwave reactor at 90°C for 40min at a power of 500W, then carry out vacuum filtration, and wash 5 times with anhydrous acetone, and finally carry out vacuum at 70°C Dry to obtain intermediate product Z; wherein the molar ratio of 1,4-butane sultone and morpholine is 1:1;

[0046] b) Add concentrated sulfuric acid to the intermediate product Z dropwise at room temperature, wherein the molar ratio of concentrated sulfuric acid to intermediate product Z is 2:1, stir at room temperature for 1 hour to mix thoroughly, and then transfer it to a hydrothermal reaction vessel Treated at 80°C for 10h. After the reaction, the liquid was obtained, which was washed 4 times with anhydrous acetone, and dried in vacuum at 6...

Embodiment 3

[0054] 1) Preparation of 3# catalyst:

[0055] a) At room temperature, mix 1,6-dibromohexane and morpholine at a molar ratio of 1:2, stir for 45 minutes under a nitrogen atmosphere, and then continue to drop 1,4-butane into it sultone, and transferred to a microwave reactor at 80 ° C, 400 W power for 50 min, then it was vacuum filtered, and washed 4 times with anhydrous acetone, and finally vacuum-dried at 70 ° C to obtain Intermediate product Z; wherein the molar ratio of 1,4-butane sultone and morpholine is 1:1;

[0056] b) Add concentrated sulfuric acid to the intermediate product Z dropwise at room temperature, wherein the molar ratio of concentrated sulfuric acid to intermediate product Z is 2:1, stir at room temperature for 1 hour to mix thoroughly, and then transfer it to a hydrothermal reactor treated at 90°C for 8h; after the reaction, the liquid was obtained, washed 3 times with anhydrous acetone, and vacuum-dried at 60°C for 2h to obtain ionic liquid N;

[0057] c...

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PUM

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Abstract

The invention discloses a method for preparing alkylated gasoline, which uses isobutane and 1-butene as raw materials, and uses a supported dinuclear polyacid ionic liquid as a catalyst at a temperature of 70 o C. Reaction pressure 2.0MPa, mass space velocity 3h ‑1 The reaction was carried out in a fixed bed reactor, and the molar ratio of isobutane to 1-butene was 20:1. The invention provides a supported dinuclear polyacid ionic liquid catalyst with high catalytic activity, good reaction stability, easy recycling, high olefin conversion rate and TMP yield, and is applied to isobutane and butene. Prepare alkylated gasoline as raw material.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry and relates to a catalyst, in particular to a method for preparing alkylated gasoline. Background technique [0002] With the deterioration of the quality of my country's processed crude oil and the continuous upgrading of the quality of gasoline products, the traditional gasoline production methods and gasoline products are facing huge challenges. Using butene and isobutane as raw materials, the aromatics-free, olefin-free, sulfur-free, high-octane, low-vapor-pressure alkylated gasoline produced by alkylation reaction is an environmentally friendly alternative to MTBE and ethanol Type high octane gasoline blending component. The industrially used alkylation catalysts are mainly concentrated sulfuric acid and hydrofluoric acid, but they have disadvantages such as large acid consumption, serious equipment corrosion and environmental pollution, and the catalyst is not easy to recycle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G50/00B01J31/38B01J35/12C07D295/088B01J35/27
CPCC10G50/00C10G2400/02B01J31/0292B01J31/0282B01J31/0285C07C2/62B01J35/33C07C9/16
Inventor 王强
Owner 台州正铭智能家居科技有限公司
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