Process and device for synthesizing peroxyacetic acid

A technology of peracetic acid and synthesis process, applied in the field of chemical engineering, can solve the problems of easy explosion, low production efficiency and high reaction temperature, and achieve the effects of avoiding production accidents, eliminating potential safety hazards, and avoiding the danger of strong stimulation

Inactive Publication Date: 2013-07-17
JIAXING UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] What the present invention aims to solve are the problems of low production efficien

Method used

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  • Process and device for synthesizing peroxyacetic acid

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Experimental program
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Effect test

Embodiment 1

[0030] Mix 50 mL acetic anhydride with 50 mL hydrogen peroxide (H 2 o 2 Solution) 30 wt%, using a medical syringe to push the T-type mixer respectively, the mixed reaction liquid enters a stainless steel pipe (microchannel reactor) with an inner diameter of 1.0 mm and a length of 2.0 m to continue the reaction, and heat is transferred to the microchannel reactor through the wall of the stainless steel pipe. Around 15 oC in the water bath, there is no significant temperature rise in the water bath. The reaction product was collected at the end of the microchannel reactor, and the peracetic acid content was determined to reach 15 wt% by iodometric method.

Embodiment 2

[0032] Both constant-flow pumps delivered acetic anhydride and 60 wt% hydrogen peroxide (H 2 o 2 Solution), the two materials are intensively mixed in a T-type micro-mixer, and the mixed materials enter a section of stainless steel pipe (microchannel reactor) with an inner diameter of 1.0 mm and a length of 12 m to continue the reaction. The exothermic heat of the reaction was transferred to the surrounding water bath at 15 oC through the wall of the stainless steel pipe, and the electric stirrer stirred the water bath rapidly without significant temperature rise. The reaction product was collected at the end of the microchannel reactor, and the content of peracetic acid was determined to reach 27 wt% by iodometric method.

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Abstract

The invention discloses a process and a device for synthesizing peroxyacetic acid. The process includes: enabling acetic anhydride and hydrogen peroxide to be respectively and intensively mixed in a micro-mixer, entering a micro-channel reactor with the length of 1-10m and the inner diameter of 0.5-2.0mm, enabling the reaction temperature to be 10-70 DEG C and the retention time to be 2-10min, and synthesizing to obtain the 5-30wt% peroxyacetic acid. The synthesis device comprises a constant flow pump, the micro-mixer, the micro-channel reactor and a water bath, wherein the constant flow pump is connected with the micro-mixer which is connected with the micro-channel reactor, and the micro-channel reactor is disposed in the water bath.

Description

technical field [0001] The invention provides a process and a device for synthesizing peroxyacetic acid, belonging to the field of chemical engineering. Background technique [0002] Peracetic acid has an efficient and rapid killing effect on bacterial propagules, spore fungi, yeasts and germs, etc. It is used as a bactericidal disinfectant in the fields of medical treatment and health and epidemic prevention, and is used for the prevention and treatment of infectious diseases and disinfection of drinking water and food. [0003] Peracetic acid is an important chemical raw material, which is used as oxidizing agent and epoxy oxidizing agent in organic synthesis, such as for the synthesis of caprolactam, glycerin, propylene oxide and epoxy plasticizer. In addition, peracetic acid is also used as a bleaching agent for textiles, paper, grease, paraffin and starch. [0004] The traditional synthesis method of peracetic acid is to mix glacial acetic acid with 30% to 90 wt% hydro...

Claims

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Application Information

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IPC IPC(8): C07C409/26C07C407/00B01J19/00
Inventor 胡万鹏万新伟陈建国杜欢政
Owner JIAXING UNIV
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