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Deacidification and dehydration method of 3-chloropropene

A chloropropene and deacidification technology, which is applied in chemical instruments and methods, preparation of halogenated hydrocarbons, organic chemistry, etc., can solve the problems of acid and water content that cannot fully meet the high quality requirements of 3-chloropropene, and achieve physical and chemical Stable in nature, easy to regenerate, and not easy to break

Active Publication Date: 2015-07-01
CHINA PETROLEUM & CHEM CORP
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AI Technical Summary

Problems solved by technology

[0003] At present, the content of high-purity grade 3-chloropropene on the market has reached more than 99.3%, colorless and transparent, water content (mass fraction) is 0.01%, acid content (mass fraction in terms of HCl) is 0.002%, but the 3- The acid and water content in chloropropene still cannot fully meet the high quality requirements of 3-chloropropene in the fields of organosilicon and water treatment additives

Method used

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  • Deacidification and dehydration method of 3-chloropropene
  • Deacidification and dehydration method of 3-chloropropene

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Put 35g of soda lime and 28g of silica gel into adsorption column A and adsorption column B respectively, connect them with the connecting pipe of the peristaltic pump, and evenly transport 6500g of crude 3-chloropropene through the adsorption column A and adsorption column B with the peristaltic pump , control the flow rate to 9.6g / min, and obtain refined 3-chloropropene after the treatment is completed. The acid content and water content of 3-chloropropene and refined 3-chloropropene were tested respectively, and the analysis results are shown in Table 1.

Embodiment 2

[0019] Put 30g of sodium sulfate and 38g of montmorillonite into the adsorption column A and adsorption column B respectively, connect them with the connecting pipe of the peristaltic pump, and evenly transport 9300g of 3-chloropropene through the adsorption column A and the adsorption column with the peristaltic pump B, control the flow rate to 7.5g / min, and obtain refined 3-chloropropene after the treatment is completed. The acid content and water content of 3-chloropropene and refined 3-chloropropene were tested respectively, and the analysis results are shown in Table 1.

Embodiment 3

[0021] Put 29g of anhydrous copper sulfate and 40g of silica gel into adsorption column A and adsorption column B respectively, connect them with the connecting pipe of the peristaltic pump, and transport 7200g of 3-chloropropene evenly through the adsorption column A and the adsorption column with the peristaltic pump B, control the flow rate of 7.2g / min, and obtain refined 3-chloropropene after the treatment is completed. The acid content and water content of 3-chloropropene and refined 3-chloropropene were tested respectively, and the analysis results are shown in Table 1.

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Abstract

The invention provides a deacidification and dehydration method of 3-chloropropene. 3-chloropropene is subjected to absorption treatments of a drying agent A and a drying agent B in sequence, wherein the drying agent A is one or more of anhydrous cupric sulfate, clay, alumina and soda lime, and the component B is one or more of soda lime, molecular sieve, montmorillonite and silica gel. In an absorption column, 3-chloropropene is subjected to chemical and physical absorption with the drying agents so as to reduce the contents of water and acid. The deacidification and dehydration method of 3-chloropropene does not bring in new impurities to 3-chloropropene, and affects the product quality.

Description

technical field [0001] The invention relates to a method for deacidifying and dehydrating 3-chloropropene. Background technique [0002] 3-Chloropropene, also known as allyl chloride, is a chlorinated olefin compound, and its chemical structure is CH 2 =CH-CH 2 Cl, which not only has the properties of organochlorines, but also exhibits the properties of olefins. Due to its active chemical properties, it has become an important intermediate in organic synthesis, and is used in the manufacture of pesticides, silane coupling agents, dye intermediates, oil field additives, medicines, coatings, water purifiers, adhesives, flame retardants, reinforced agent etc. With the rapid development of the fine chemical industry, especially the development of organic silicon and water treatment additives, higher and higher requirements are put forward for the quality of chloropropene; at the same time, 3-chloropropene and H 2 o 2 The process of preparing epichlorohydrin by direct epoxid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C21/067C07C17/389
Inventor 郝新兵周江明任六波汤文红
Owner CHINA PETROLEUM & CHEM CORP
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