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A kind of degassing process for producing sodium cetyl sulfonate

A technology for a mixture of sodium cetyl sulfonate and alkylsulfonyl chloride, which is applied in the preparation of sulfonate, products, and organic compounds, and can solve the problem of high impurity content of sodium cetyl sulfonate, cetane Low purity of sulfonyl chloride, complex degassing process and other problems, to achieve the effect of great application value, high yield and convenient cutting

Active Publication Date: 2022-06-07
安徽海顺化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the degassing process of cetylsulfonyl chloride is complicated and incomplete, resulting in low purity of cetylsulfonyl chloride, high impurity content and low yield in the finished product of sodium cetylsulfonate, And the existence of unreacted chlorine gas, sulfur dioxide and by-product hydrogen chloride gas in the liquid will cause environmental pollution, and in severe cases, endanger human health

Method used

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  • A kind of degassing process for producing sodium cetyl sulfonate
  • A kind of degassing process for producing sodium cetyl sulfonate
  • A kind of degassing process for producing sodium cetyl sulfonate

Examples

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Embodiment 1

[0030] A degassing process for producing sodium hexadecyl sulfonate, comprising the following steps:

[0031] The first step, adding heavy oil into the reactor, under the illumination of ultraviolet rays, feed the mixed gas of chlorine and sulfur dioxide into the reactor according to the volume ratio of 1:2, and control the temperature in the reactor to be 31°C, and the rotating speed is 100r / min. Under the conditions, the reaction is carried out for 3h to obtain a mixture of alkylsulfonyl chlorides;

[0032] In the second step, the alkylsulfonyl chloride mixture is put into the degassing device from the feed pipe 21, and chlorine, sulfur dioxide and by-product hydrogen chloride gas in the alkylsulfonyl chloride mixture are removed through the degassing device to obtain impurity-removed alkylsulfonyl chloride liquid, and is discharged from the degassing device through the discharge pipe 25 to obtain purified alkylsulfonyl chloride;

[0033] In the third step, the purified alkyl...

Embodiment 2

[0036] A degassing process for producing sodium hexadecyl sulfonate, comprising the following steps:

[0037] The first step, adding heavy oil into the reactor, under the illumination of ultraviolet light, feed the mixed gas of chlorine and sulfur dioxide into the reactor according to the volume ratio of 1:2, and control the temperature in the reactor to be 33 ° C, and the rotating speed is 150r / min Under the conditions, the reaction was carried out for 4h to obtain a mixture of alkylsulfonyl chlorides;

[0038] In the second step, the alkylsulfonyl chloride mixture is put into the degassing device from the feed pipe 21, and chlorine, sulfur dioxide and by-product hydrogen chloride gas in the alkylsulfonyl chloride mixture are removed through the degassing device to obtain impurity-removed alkylsulfonyl chloride liquid, and is discharged from the degassing device through the discharge pipe 25 to obtain purified alkylsulfonyl chloride;

[0039] The third step, adding the purif...

Embodiment 3

[0042] A degassing process for producing sodium hexadecyl sulfonate, comprising the following steps:

[0043] The first step, adding heavy oil into the reactor, under the illumination of ultraviolet rays, feed the mixed gas of chlorine and sulfur dioxide into the reactor according to the volume ratio of 1:2, and control the temperature in the reactor to be 35 ° C, and the rotating speed is 200r / min Under the condition, the reaction is carried out for 5h to obtain the alkylsulfonyl chloride mixture;

[0044] In the second step, the alkylsulfonyl chloride mixture is put into the degassing device from the feed pipe 21, and chlorine, sulfur dioxide and by-product hydrogen chloride gas in the alkylsulfonyl chloride mixture are removed through the degassing device to obtain impurity-removed alkylsulfonyl chloride liquid, and is discharged from the degassing device through the discharge pipe 25 to obtain purified alkylsulfonyl chloride;

[0045] The third step, adding the purified a...

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Abstract

The invention discloses a degassing process for producing sodium cetyl sulfonate, comprising the following steps: the first step, adding heavy oil into a reaction kettle, feeding chlorine gas and sulfur dioxide mixed gas into the reaction kettle to obtain alkane The mixture of alkylsulfonyl chlorides; in the second step, the mixture of alkylsulfonyl chlorides is put into the degassing device through the feed pipe to obtain purified alkylsulfonyl chlorides; in the third step, the purified alkylsulfonyl chlorides are added to the tank containing sodium hydroxide solution In the reaction tank, react for 1-2h to obtain mixed solution A; in the fourth step, the mixed solution A is purified and separated to obtain sodium hexadecylsulfonate. The present invention combines mechanical stirring and hot air extraction to Chlorine, sulfur dioxide and hydrogen chloride gas in the alkylsulfonyl chloride mixture are removed, and the degassing device has the characteristics of heat preservation, convenient feeding, and safe use. The degassing process of the present invention is simple, the product is high in purity, and the yield is high. It has great application value in the process of industrial production of sodium cetyl sulfonate.

Description

technical field [0001] The invention belongs to the technical field of production of sodium hexadecyl sulfonate, and in particular relates to a degassing process for producing sodium hexadecyl sulfonate. Background technique [0002] Sodium cetyl sulfonate is a water-soluble anionic surfactant with good wetting, emulsifying, dispersing, foaming and decontamination abilities in hard water, good biodegradability, and little irritation to the human body. Industrial detergents and domestic liquid detergents, textile cleaning agents, dyeing auxiliaries, flotation agents for mineral processing. [0003] Sodium Cetyl Sulfonate This product is water-white cloudy liquid, density 1.055g / cm at 20℃ 3 , the viscosity is 0.02Pa.s, and the flash point is greater than 100°C. In the industrial production process, the sulfonylation reaction of heavy oil is generally carried out under the conditions of sulfur dioxide and chlorine to obtain cetylsulfonyl chloride, and the cetylsulfonyl chlorid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C303/10C07C303/44C07C309/80C07C303/32C07C309/04
CPCC07C303/10C07C303/44C07C303/32C07C309/80C07C309/04Y02P20/141
Inventor 孙涛涛韦耀景京吴金斌吴文娟
Owner 安徽海顺化工有限公司
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