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A purification system and process for 2,5-dimethyl-2,5-bis(tert-butyl peroxy)hexane

A technology of tert-butyl peroxide and dimethyl peroxide, which is applied in 2 fields, can solve the problems of long distillation time, unrealistic operation, high cost of introducing nitrogen gas, etc., and achieve the effect of shortening the distillation time

Inactive Publication Date: 2018-02-23
宜宾高县钧恒新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Another technical problem to be solved by the present invention is: the existing purification process adopts vacuum distillation under the condition of 40~60°C and -0.09MPa~-0.1MPa, wherein -0.1MPa cannot be realized for those skilled in the art. Adopt the method of passing into nitrogen distillation, need purification before nitrogen is passed into, increase raw material cost; Under 40~60 ℃, some impurity components in the liquid can not be fully distilled, make final product purity low; Another purpose of the present invention is : Provide a kind of purification process of 2,5-dimethyl-2,5-bis(tert-butyl peroxy)hexane, which adopts 2,5 -Dimethyl-2,5-bis(tert-butylperoxy)hexane is distilled by passing air into the semi-finished product, which solves the problems of high cost of nitrogen feeding, long distillation time and low purity of the target product in the existing process

Method used

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  • A purification system and process for 2,5-dimethyl-2,5-bis(tert-butyl peroxy)hexane
  • A purification system and process for 2,5-dimethyl-2,5-bis(tert-butyl peroxy)hexane
  • A purification system and process for 2,5-dimethyl-2,5-bis(tert-butyl peroxy)hexane

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Embodiment 1

[0050] Such as figure 1 , figure 2 As shown, a purification system of 2,5-dimethyl-2,5-bis(tert-butyl peroxide)hexane includes still 21 and decolorizing still 22; 22 connection; distillation still 21 comprises housing 13, is provided with air inlet pipe 6 in housing 13, and the bottom distance of one end of air inlet pipe 6 and housing 13 is 10mm, the other end of air inlet pipe 6 and housing 13 Top wall connection.

[0051] The top of the decolorizing kettle 22 is provided with an activated carbon feeding device.

[0052] An air pipe 10 communicating with the inside of the housing 13 is installed on the top wall of the housing 13 .

[0053] The other end of the air inlet pipe 6 is provided with a needle valve 7 .

[0054] The number of 6 air inlet pipes is 2, and they are evenly and symmetrically distributed in the housing 13 with the central axis of the still 21 as the axis.

[0055] The outlet at the bottom of the decolorizing kettle 22 is connected with a suction fil...

Embodiment 2

[0070] In this embodiment, on the basis of Embodiment 1, the distance between one end of the air inlet pipe 6 and the bottom of the housing 13 is set to 100 mm, and the number of 6 air inlet pipes is 3. Other technical features are the same as those in Embodiment 1. The features are the same and will not be repeated here.

[0071] The purified 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane obtained in this example has a purity of 98.1%, a distillation time of 8 hours, and a material consumption of 0.9%.

Embodiment 3

[0073] In this embodiment, on the basis of Embodiment 1, the distance between one end of the air inlet pipe 6 and the bottom of the housing 13 is set to 200 mm, and the number of 6 air inlet pipes is 4. Other technical features are the same as those in Embodiment 1. The features are the same and will not be repeated here.

[0074] The purified 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane obtained in this example has a purity of 98%, a distillation time of 7.5 hours, and a material consumption of 1.0%.

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Abstract

The invention discloses a purifying system for 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane. The system comprises a distillation kettle and a decoloring kettle; the distillation kettle is connected with the decoloring kettle through a material conveying pipeline; the distillation kettle comprises a casing; an air inlet pipe is arranged in the casing; the distance between one end of the air inlet pipe and the bottom of the casing is 10 to 200 mm; the other end of the air inlet pipe is connected with the top wall of the casing; the arrangement of the air inlet pipe is favorable to introduce air into liquid to assist the boiling of the liquid; the decoloring kettle is arranged, so that the product quality is improved. The invention further provides a purifying process for the 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane. Distillation is performed under the conditions of 61 to 68 DEG C and -0.093 to 0.098 MPa; the air is introduced into the liquid for distilling; the product is decolored after the distilling is completed; the distilling time is shortened; the purity and the chromaticity of a target product are improved; the energy consumption and material consumption for purifying are reduced.

Description

technical field [0001] The invention relates to the technical field of chemical products, in particular to a purification system and process of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane. Background technique [0002] 2,5-Dimethyl-2,5 bis(tert-butyl peroxy)hexane, also known as 2,5-dimethyl-2,5 bis(tert-butyl peroxy)hexane, commonly known as bis" 2,5" vulcanizing agent is an industrially important peroxide. Its molecular formula is C 16 h 34 o 4 , molecular weight 290.44, density 0.847g / cm 3 , the specific gravity is D (20°C) 0.865, the refractive index is 1.4185, the flash point is: closed 36°C, open 58°C; the alarm temperature is 75°C, the self-accelerating decomposition temperature is 80°C, and the theoretical active oxygen content is 11.02%. A flammable, explosive, odorless, light yellow transparent oily liquid. 2,5-Dimethyl-2,5-bis(tert-butyl peroxide)hexane is often used as a free radical initiator in the polymerization process and to improve the viscosity of p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C407/00C07C409/16
CPCC07C407/00C07C409/16
Inventor 孙沁屏林志成施立超
Owner 宜宾高县钧恒新材料有限公司
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