Hydrolysis device for preparing p-toluenesulfonyl chloride and processing technology

A technology for preparing toluenesulfonyl chloride and p-toluenesulfonyl chloride, which is applied in the field of hydrolysis devices for preparing p-toluenesulfonyl chloride, can solve the problems of slow temperature drop in reaction space, prolonged temperature time, reduced hydrolysis reaction accuracy, and the like, so as to improve the dissolution rate. Depth, improve hydrolysis effect, high degree of automation effect

Active Publication Date: 2021-01-08
湖州卓瑞化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies of the prior art, by setting a driving mechanism to drive the uniform dripping mechanism, the uniform dripping mechanism can complete the intermittent dripping work of water on the one hand, and evenly fall in the process of moving down; on the other hand, it can change in real time The air pressure under the dripping mechanism is evenly increased, and the temperature of the reaction space drops slowly while the pressure gradually increases. At the same time, the heat emitted by the driving mechanism is used to heat the reactor when it is working, so that the temperature in the reactor increases from 70 ° C. The time for the temperature to drop to 50°C becomes longer, and then the water in the range of 70°C to 50°C is guaranteed to be added dropwise, thus solving the problem that solvent gasoline needs to be stirred when adding and dissolving, and the stirring piece is not conducive to the full completion of the mixture. Stratification and post-separation work, in addition, the mixture remaining on the agitator cannot be cleaned and discharged in time, which reduces the accuracy of this hydrolysis reaction and affects the accuracy of the next hydrolysis reaction.

Method used

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  • Hydrolysis device for preparing p-toluenesulfonyl chloride and processing technology
  • Hydrolysis device for preparing p-toluenesulfonyl chloride and processing technology
  • Hydrolysis device for preparing p-toluenesulfonyl chloride and processing technology

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Embodiment 1

[0060] Such as Figure 1 to Figure 3 As shown, a kind of hydrolysis device for the preparation of p-toluenesulfonyl chloride includes a hydrolysis reactor 101, and also includes a cleaning mechanism 2, a uniform dripping mechanism 3, and a stirring mechanism 4 arranged in the hydrolysis reactor 101 and arranged in a vertical direction. And the gasoline transmission mechanism 5 arranged outside the hydrolysis reactor 101 and communicated with the hydrolysis reactor 101;

[0061] The uniform dripping mechanism 3 includes a water container 31 arranged outside the hydrolysis reaction kettle 101, a first connection pipe 32 that is connected to the water container 31 at one end and sealed with the other end in the hydrolysis reaction kettle 101, The uniform drip assembly 33 arranged in the hydrolysis reactor 101 and communicated with the first connecting pipe 32, driving the uniform drip assembly 33 to lift in the vertical direction and located outside the hydrolysis reactor 101 Me...

Embodiment 2

[0095] Such as Figure 20 Shown, a kind of p-toluenesulfonyl chloride processing technology comprises:

[0096] Step 1, the production of tosyl chloride, artificially select a certain amount of chlorosulfonic acid, and add it to the 3000L reactor 102, and in the environment of 30-50°C, add some amount of toluene dropwise under negative pressure to 3000L for reaction In the kettle 102, the dropwise addition is completed, and after the temperature rises, the insulation is placed;

[0097] Step 2, hydrolysis reaction, the mixture in step 1 hydrolysis reaction kettle 101 is added in the hydrolysis reaction kettle 101, start drive mechanism 34, make dripping water under the condition of negative pressure;

[0098] Step 3, adjusting the reaction temperature, synchronously with the step 2, the driving mechanism 34 respectively drives the first pressure limiting component 333 and the third pressure limiting component 334 to move downwards to complete the dripping work and simultaneou...

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Abstract

The invention relates to a hydrolysis device for preparing p-toluenesulfonyl chloride, which comprises a reaction kettle, and further comprises a cleaning mechanism, a uniform dripping mechanism, a stirring mechanism and a gasoline transmission mechanism. The invention further provides a p-toluenesulfonyl chloride processing technology, which comprises the steps of step 1, producing p-toluenesulfonyl chloride; step 2, conducting a hydrolysis reaction; step 3, adjusting the reaction temperature; step 4, conducting a dissolution reaction; step 5, carrying out self-cleaning; and step 6, standingfor separation. The technical problems that when solvent gasoline is added for dissolution, stirring needs to be conducted, then a stirring piece is not beneficial to sufficient layering and later separation of a mixture, in addition, the mixture left on the stirring piece cannot be cleaned and discharged in time, and the accuracy of the next hydrolysis reaction is influenced while the accuracy ofthe hydrolysis reaction at this time is reduced are solved.

Description

technical field [0001] The invention relates to the technical field of p-toluenesulfonyl chloride, in particular to a hydrolysis device for the preparation of p-toluenesulfonyl chloride and a processing technique. Background technique [0002] As a fine chemical product, p-toluenesulfonyl chloride is widely used in the dyestuff, medicine, and pesticide industries. In the dyestuff industry, it is mainly used to manufacture disperse, ice dyeing, and acid dye intermediates; in the pharmaceutical industry, it is mainly used to produce sulfonamides. Drugs - mesotrione, etc.; the pesticide industry is mainly used for mesotrione, sulcotrione, mefenaxyl, etc. With the continuous development of dyestuffs, pharmaceuticals, and pesticide industries, the international demand for this product is increasing Growth, especially in Europe and the United States, has broad market prospects. [0003] The patent document with the patent number CN2015209956449 discloses a refining system for the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J4/00B01F13/10C07C303/08C07C309/86
CPCB01J4/001C07C303/08B01F33/80B01F33/8362C07C309/86
Inventor 施岩
Owner 湖州卓瑞化工科技有限公司
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