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Method for producing alkylation gasoline by using boron trifluoride-trifluoroethanol complex as catalyst

A technology for alkylating gasoline and trifluoroethanol, applied in organic compound/hydride/coordination complex catalysts, liquid hydrocarbon mixture production, physical/chemical process catalysts, etc., can solve technical and safety problems and achieve The effect of low catalyst cost, low environmental pollution and high selectivity

Active Publication Date: 2013-08-21
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are technical and safety difficulties in simply using boron trifluoride as an alkylation catalyst.

Method used

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  • Method for producing alkylation gasoline by using boron trifluoride-trifluoroethanol complex as catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Pass boron trifluoride gas into 100 g of trifluoroethanol, continuously stir and cool with dry ice to take away the heat released by the reaction. When the weight of trifluoroethanol no longer increases, it means that trifluoroethanol cannot react with more boron trifluoride, and the ratio of the amount of substance between boron trifluoride and trifluoroethanol is 0.1:1 to 1:1, the preferred ratio is 1:1. The obtained complex can be used as an alkylation catalyst.

[0015] Preparation of Alkylate Oil

Embodiment 2

[0017] Add 20 ml of the boron trifluoride-trifluoroethanol complex prepared in Example 1 above into a stirred reactor, remove the air in the reactor with nitrogen, stir vigorously, and use a high-pressure pump to mix isobutane and 1 - 50ml of butene, the pressure in the reactor is 0.4MPa, the ratio of alkene in the raw material is 10:1, react at 0°C for 60min. After the reaction is completed, the isobutane that has not participated in the reaction is vented. After the catalyst and the product are left to stand, the product is layered. The upper layer is the alkylate, and the lower layer is the catalyst. After separation, the alkylate can be obtained.

Embodiment 3

[0019] Add 20 ml of the boron trifluoride-trifluoroethanol complex prepared in the above Example 1 into a stirred reactor, remove the air in the reactor with nitrogen, stir vigorously, and use a high-pressure pump to mix isobutane and 2- 50ml of butene, the pressure in the reactor is 1MPa, the ratio of alkene to 10:1 in the raw material is reacted at 80°C for 1min. After the reaction is completed, the isobutane that has not participated in the reaction is vented. After the catalyst and the product are left to stand, the product is layered. The upper layer is the alkylate, and the lower layer is the catalyst. After separation, the alkylate can be obtained.

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PUM

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Abstract

The invention relates to a method for producing high-octane gasoline by performing catalytic conversion on isobutane-butylene by using boron trifluoride-trifluoroethanol complex as a catalyst in the field of petrochemical industry. By performing the catalytic conversion on the isobutane-butylene with the catalyst, the alkylation gasoline can be produced highly selectively under certain reaction conditions; and after the reaction is finished, the catalyst can be conveniently separated from an alkylation product, and the process is simple. Compared with the conventional sulfuric acid process and hydrogen fluoride process, the process has the advantages of mild reaction conditions, high selectivity of C8, low catalyst cost, the easy separation of the catalyst from the product and high application safety, and thus is a completely novel alkylation gasoline production process.

Description

Technical field: [0001] The invention belongs to the field of petrochemical industry, and in particular relates to a method for producing high-octane gasoline by utilizing a novel alkylation catalyst. Background technique: [0002] Since the discovery of the alkylation reaction in the 1940s, the alkylation reaction of isobutane and butene has become an important means of clean gasoline production in the petrochemical industry. Now there are about 170 alkylation units in operation all over the world, supplying more than 10% of motor gasoline every year. Alkylated gasoline has the advantages of high octane number (RON: 92-98, MON: 90-96), low Reid vapor pressure, low sulfur, and low aromatics. When this gasoline burns, it will greatly alleviate the urban air pollution caused by automobile exhaust emissions, and is an ideal gasoline blending component. [0003] In industry, the alkylation reaction of isobutane and butene still adopts the traditional alkylation process, namely...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G50/00B01J31/22
Inventor 张锁江辛加余张镇赵国英张香平晏冬霞
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI