Continuous decontamination process for organic chlorination reaction byproduct hydrochloric acid

A technology for by-product hydrochloric acid and chlorination reaction, applied in inorganic chemistry, chlorine/hydrogen chloride, chlorine/hydrogen chloride purification, etc., can solve the problems of increasing the "three wastes" emissions, failing to meet the synthetic acid standard, and having no use value of hydrochloric acid. , to achieve the effect of ensuring the effect of hydrochloric acid removal, reducing the discharge of three wastes, and improving the utilization rate of raw materials

Inactive Publication Date: 2018-11-13
河南昊海实业有限公司
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Problems solved by technology

[0003] Due to the inherent vapor partial pressure of organic matter at various temperatures, gas-liquid entrainment will occur during chlorination or hydrolysis, and hydrogen chloride gas will entrain many organic materials (raw materials/products). In the production process, hydrogen chloride gas After resin adsorption, a large amount of organic matter is removed, but a small amount of organic matter is still brought into hydrochloric ac

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  • Continuous decontamination process for organic chlorination reaction byproduct hydrochloric acid

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Embodiment 1

[0016] Embodiment 1-toluene chlorination produces trichlorobenzyl process by-product hydrochloric acid treatment process

[0017] Chlorination reaction equation:

[0018] as attached figure 1 Shown, a kind of organic chlorination reaction by-product hydrochloric acid continuous impurity removal process, described organic chlorination reaction by-product hydrochloric acid 5 impurity removal process comprises the following steps: a, the by-product hydrochloric acid 5 solution that organic chlorination reaction generates Feed in from the feed inlet at the bottom of the primary adsorption resin tower at a flow rate of 15BV / h, and discharge from the top outlet of the primary adsorption resin tower; The flow rate of / h is passed into from the feed port at the bottom of the secondary adsorption resin tower, and the finished product hydrochloric acid is temporarily stored in the hydrochloric acid buffer tank 6 from the discharge port at the top of the secondary adsorption resin to

Embodiment 2

[0026] Embodiment 2-Process of producing p-fluorotrichlorobenzyl by-product hydrochloric acid by chlorination of p-fluorotoluene

[0027] Chlorination reaction equation:

[0028] as attached figure 1 Shown, a kind of organic chlorination reaction by-product hydrochloric acid continuous impurity removal process, described organic chlorination reaction by-product hydrochloric acid 5 impurity removal process comprises the following steps: a, the by-product hydrochloric acid 5 solution that organic chlorination reaction generates Feed in from the feed inlet at the bottom of the primary adsorption resin tower at a flow rate of 10BV / h, and discharge from the top outlet of the primary adsorption resin tower; The flow rate of / h is passed into from the feed port at the bottom of the secondary adsorption resin tower, and the finished product hydrochloric acid is temporarily stored in the hydrochloric acid buffer tank 6 from the discharge port at the top of the secondary adsorption

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Abstract

The invention discloses a continuous decontamination process for organic chlorination reaction byproduct hydrochloric acid. According to the process, two stages of adsorption resin towers are seriallyconnected to carry out adsorption decontamination, another adsorption resin tower is used for carrying out decomposition and regeneration, and continuous decontamination operation can be implementedfor byproduct hydrochloric acid. As a whole, the process has the advantages that the design is reasonable, three adsorption resin towers are alternated to carry out continuous production, two adsorption resin towers are serially connected to carry out adsorption, the another one is used for carrying out decomposition and regeneration later, a byproduct hydrochloric acid decontamination effect canbe effectively ensured, the byproduct hydrochloric acid decontamination efficiency can be greatly improved, a raw material utilization rate can be increased, waste emission can be reduced, the production cost can be reduced, and very high use values can be made.

Description

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Claims

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Application Information

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Owner 河南昊海实业有限公司
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