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Device for producing long-chain alkylbenzene from hydrogen fluoride

A long-chain alkylbenzene and hydrogen fluoride technology, applied in catalysts, organic chemistry, hydrocarbons, etc., can solve problems such as uselessness, and achieve the effects of avoiding waste, no by-products, good economic and social benefits

Pending Publication Date: 2020-07-10
江苏金桐表面活性剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the particularity of the hydrogen fluoride alkylation process, the production of long-chain alkylbenzene by this process is currently useless in China

Method used

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  • Device for producing long-chain alkylbenzene from hydrogen fluoride

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A device for producing long-chain alkylbenzenes from hydrogen fluoride, comprising a first raw material tank 1, a second raw material tank 2, a third raw material tank 3, a first mixer 4, a second mixer 13, and an alkylation reactor 5. Acid stratifier 6, heat exchanger 7, hydrogen fluoride stripping tower 8, debenzene tower 9 and finished product tank 10, the first raw material tank 1 and the second raw material tank 2 are all connected to the first mixer 4, The first mixer 4 and the third raw material tank 3 are all connected to the second mixer 13; the second mixer 13 is connected to the acid stratifier 6 through the alkylation reactor 5; the acid stratifier The upper end of the 6 is connected to the hydrogen fluoride stripping tower 8 through a heat exchanger 7, and the lower end of the acid stratifier 6 is connected to the third raw material tank 3; the bottom of the hydrogen fluoride stripping tower 8 is connected to the debenzene tower 9; The bottom of the tower 9...

Embodiment 2

[0027] A method for producing long-chain alkylbenzenes from hydrogen fluoride, the steps are as follows:

[0028] (1) The long-chain olefins from the tank area are input into the first raw material tank 1, pressurized by the feed pump 21, and mixed with the dry benzene in the second raw material tank 2 through the first mixer 4;

[0029] (2) The hydrogen fluoride in the third raw material tank 3 and the reactants in the first mixer 4 are sent to the second mixer 13 for mixing;

[0030] (3) The mixed product is carried out in the alkylation reactor 5 for an alkylation reaction;

[0031] (4) The reactants after the alkylation reaction are sent to the acid stratifier 6 for stratification, and the upper layer materials (including reaction products and unreacted benzene) are sent to the heat exchanger 7 for heat exchange to 140°C, and the heat exchange The finished material enters into the hydrogen fluoride stripping tower 8; the stratified lower layer material (hydrogen fluoride)...

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Abstract

The invention relates to a device for producing long-chain alkylbenzene from hydrogen fluoride. The device comprises a first raw material tank, a second raw material tank, a third raw material tank, afirst mixer, a second mixer, an alkylation reactor, an acid layering device, a heat exchanger, a hydrogen fluoride stripping tower, a debenzolization tower and a finished product tank. The first rawmaterial tank and the second raw material tank are connected with the first mixer, and the first mixer and the third raw material tank are connected with the second mixer; the second mixer is connected with the acid layering device through the alkylation reactor; the upper end of the acid layering device is connected with the hydrogen fluoride stripping tower through the heat exchanger; the bottomof the hydrogen fluoride stripping tower is connected with the debenzolization tower; the lower end of the acid layering device is connected with the third raw material tank; the bottom of the hydrogen fluoride stripping tower is connected with the debenzolization tower; a debenzolization tower top vacuumizing device is arranged at the top of the debenzolization tower. The device for producing long-chain alkylbenzene from hydrogen fluoride is suitable for producing long-chain alkylbenzene by the hydrogen fluoride alkylation process, and has the advantages of high reaction conversion rate andno byproduct.

Description

technical field [0001] The invention relates to a device for producing long-chain alkylbenzenes from hydrogen fluoride, belonging to the field of synthesis of long-chain alkylbenzenes. Background technique [0002] In recent years, domestic manufacturers have tried to produce long-chain alkylbenzenes, but the catalysts used are generally aluminum trichloride-based solid acids or ionic liquids, with low reaction conversion rates, many by-products, poor product quality, short catalyst life, and many waste residues and liquids , resulting in a serious environmental burden. [0003] The hydrogen fluoride alkylation process is generally used to produce alkylbenzene (C10-13) for detergents. First, light wax (C10-13) is dehydrogenated into olefins, and then alkylated with benzene under the catalysis of hydrogen fluoride to generate alkanes for detergents. Benzene. Due to the particularity of the hydrogen fluoride alkylation process, there is currently no domestic device for produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C2/68C07C15/107
CPCC07C2/68C07C2527/1206C07C15/107
Inventor 赵敏陈小弟杨大地郭明智
Owner 江苏金桐表面活性剂有限公司