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Tower plate, reactive distillation device and preparation method of peroxycarboxylic acid

A technology of peroxycarboxylic acid and reactive distillation, applied in the field of reactive distillation, can solve problems such as explosion and safety accident

Pending Publication Date: 2022-03-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the corresponding acid anhydride and hydrogen peroxide are added to the reaction kettle for heating reaction. Due to the local high temperature in the reaction kettle, it is very easy to cause the decomposition of peroxides such as peroxycarboxylic acid, resulting in explosion. cause security incident

Method used

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  • Tower plate, reactive distillation device and preparation method of peroxycarboxylic acid
  • Tower plate, reactive distillation device and preparation method of peroxycarboxylic acid

Examples

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preparation example Construction

[0054] The present invention provides a kind of preparation method of peroxycarboxylic acid again, preferably, can utilize the reactive distillation device 20 provided by the present invention to carry out reaction, the preparation method of peroxycarboxylic acid comprises the following steps: Step S10: the first The reactant and the second reactant are mixed to form a reaction material, wherein; the first reactant is one or more of carboxylic acid and acid anhydride, and the second reactant is an oxidant; Step S20: select heat exchange medium and The reaction material is subjected to heat exchange so that the reaction material reaches a preset temperature, and under the preset temperature condition, a mixture containing peroxycarboxylic acid is obtained by reaction, for example, the heat exchange medium can heat the reaction material , so that the reaction material is at a preset temperature, thus, the reaction material can reach a preset temperature by exchanging heat with th...

Embodiment 1

[0068] Example 1 Preparation of Peracetic Acid

[0069] use figure 2 The shown reactive distillation unit 20 prepares peracetic acid, wherein: 10 trays 10 are arranged at intervals along the height direction of the shell 22, and a gap is left between the tray 10 and the inner wall of the shell 22 to form an overflow port, wherein , the tray 10 includes a tray body 12 with a receiving surface 122 capable of receiving the reaction materials, the tray body 12 is provided with a chamber for the circulation of the heat exchange medium for exchanging heat with the reaction materials, and the tray body 12 is provided with The inlet and outlet for the heat exchange medium to enter and exit the chamber respectively, the bottom surface 124 and the receiving surface 122 of the tray body 12 opposite to the receiving surface 122 are provided with through holes 126, and the thickness of the tray body 12 is 0.4 m, the receiving surface 122 of the tray body 12 is provided with a catalyst ...

Embodiment 2

[0075] Example 2 Preparation of Peracetic Acid

[0076] use figure 2 The shown reactive distillation unit 20 prepares peracetic acid, wherein: along the height direction of the shell 22, 15 trays 10 are arranged at intervals, and a gap is left between the tray 10 and the inner wall of the shell 22 to form an overflow port, wherein , the tray 10 includes a tray body 12 with a receiving surface 122 capable of receiving the reaction materials, the tray body 12 is provided with a chamber for the circulation of the heat exchange medium for exchanging heat with the reaction materials, and the tray body 12 is provided with The inlet and outlet for the heat exchange medium to enter and exit the chamber respectively, the bottom surface 124 and the receiving surface 122 of the tray body 12 opposite to the receiving surface 122 are provided with through holes 126, and the thickness of the tray body 12 is 0.75 m, the receiving surface 122 of the tray body 12 is provided with a catalys...

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Abstract

The invention relates to the technical field of reactive distillation, and discloses a tower plate, a reactive distillation device and a preparation method of peroxycarboxylic acid.The tower plate comprises a tower plate body with a bearing face capable of bearing materials, and a cavity allowing a heat exchange medium exchanging heat with the materials to circulate is formed in the tower plate body; the tower plate body is provided with an inlet and an outlet through which the heat exchange medium enters and exits from the cavity respectively, and the bottom surface, opposite to the bearing surface, of the tower plate body and the bearing surface are provided with through holes. According to the tower plate, the reaction or separation operation can be safely and stably carried out. The tower plate is arranged in the reactive distillation device, so that the safety of the reactive distillation device can be improved. The preparation method of the peroxycarboxylic acid comprises the following steps: mixing one or more of carboxylic acid and anhydride with an oxidizing agent to form a reaction material; and selecting a heat exchange medium to exchange heat with the reaction material so as to enable the reaction material to reach a preset temperature, and reacting to obtain a mixture containing peroxycarboxylic acid.

Description

technical field [0001] The invention relates to the technical field of reactive distillation, in particular to a tray, a reactive distillation device and a method for preparing peroxycarboxylic acid. Background technique [0002] The tray is the main component in the tray column. It is used to make the two fluids come into close contact and carry out the mass exchange between the two phases, so as to achieve the purpose of separating the components of the liquid mixture or gas mixture. A generally circular plate with many holes and often provided with parts that promote intimate contact between the two fluids. [0003] At present, peroxycarboxylic acid is generally obtained by reacting corresponding acid anhydride and hydrogen peroxide under the catalytic action of a catalyst. Usually, the corresponding acid anhydride and hydrogen peroxide are added to the reaction kettle for heating reaction. Due to the local high temperature in the reaction kettle, it is very easy to cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/32C07C407/00C07C409/26C07C409/24
CPCB01D3/324B01D3/009C07C407/00C07C409/26C07C409/24Y02P20/10
Inventor 姜杰马守涛杨哲徐伟孙峰朱云峰张长胜
Owner CHINA PETROLEUM & CHEM CORP
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