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A kind of production device of high boiling silicone oil and its preparation process

A high-boiling silicone oil and preparation technology, applied in the directions of transportation and packaging, dissolution, chemical instruments and methods, etc., can solve the problems of large floor area, low stability of silicone oil products, low production efficiency, etc., and achieve enhanced effects, Effect of shortening hydrolysis time and improving stability

Active Publication Date: 2021-07-30
江西华昊化工有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] Chinese invention patent CN106432732A provides a production method for the preparation of hydroxyl-terminated high-boiling silicone oil by continuous hydrolysis of methylchlorosilane high-boiling substances. Various equipment is used for continuous production. The entire process occupies a large area and the production efficiency is not high; Chinese invention patent CN103131010A provides a production method for preparing silicone oil by azeohydrolysis of organosilicon high boilers and low boilers. The hydrolysis and neutralization reactions are directly carried out, and the obtained silicone oil product is not stable.

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  • A kind of production device of high boiling silicone oil and its preparation process

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preparation example Construction

[0035] The preparation process of high boiling silicone oil is:

[0036] S1. First add pure water with a conductivity of 10 to 40us into the reactor 1, and then put the mixture of high boilers and low boilers (the mass ratio of mixture and pure water is 1:0.5 to 1.5), and then pass through the feed The pump 3 and the static mixer 2 enter the reactor 1, close the feed pump 3, and turn on the circulation pump 4 to pass the material in the reactor 1 through the static mixer 2 with a spherical pp filler and circulate it while circulating. A hydrolysis reaction occurs, the cycle time is 30-50min / kg mixture, the crude product of silicone oil is generated and enters the reaction kettle 1, and the cycle is stopped;

[0037] Wherein, the spherical pp filler has a diameter of 0.5-5 cm.

[0038] Among them, the spherical pp filler is pretreated first, and irradiated for 12 to 18 hours under a 350nm ultraviolet light environment.

[0039] S2, the crude silicone oil product in the reacto...

Embodiment 1

[0045] The preparation process of high boiling silicone oil is:

[0046]S1. First add 0.5kg of pure water with a conductivity of 10us to the reactor 1, then add 1kg of the mixture of high boilers and low boilers to the reactor 1 through the feed pump 3 and the static mixer 2, and then close it. Feed pump 3, turn on circulation pump 4, pass the material in the reactor 1 through the static mixer 2 containing spherical pp filler and carry out circulation treatment, hydrolysis reaction occurs while circulating, the circulation time is 30min, and the crude product of silicone oil enters the reaction In kettle 1, stop circulation;

[0047] Among them, the diameter of the spherical pp filler is 0.5cm.

[0048] Among them, the spherical pp filler is pretreated first, and irradiated for 12 hours under a 350nm ultraviolet light environment.

[0049] S2, the crude silicone oil product in the reactor 1 is left to stand for stratification, the liquid in the lower layer is discharged from...

Embodiment 2

[0054] The preparation process of high boiling silicone oil is:

[0055] S1. First add 1kg of pure water with a conductivity of 25us to the reactor 1, then put 1kg of the mixture of high boilers and low boilers into the reactor 1 through the feed pump 3 and the static mixer 2, and close the inlet. Material pump 3, turn on the circulation pump 4, pass the material in the reactor 1 through the static mixer 2 with spherical pp packing inside and carry out circulation treatment, hydrolysis reaction occurs while circulation, the circulation time is 40min, and the crude product of silicone oil enters the reaction In kettle 1, stop circulation;

[0056] Among them, the spherical pp filler has a diameter of 2.5 cm.

[0057] Among them, the spherical pp filler is pretreated first, and irradiated for 15 hours under a 350nm ultraviolet light environment.

[0058] S2, the crude silicone oil product in the reactor 1 is left to stand for stratification, the liquid in the lower layer is di...

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Abstract

The invention belongs to the technical field of organosilicon production, and relates to a high-boiling silicone oil production device and its preparation process, including a series of steps such as hydrolysis, layering, neutralization, telomerization, delowering, and decolorization. The mixer adopts the pretreated spherical pp filler, which is mixed with the circulating material in the static mixer, which not only enhances the hydrolysis effect of the material, but also reduces the content of low molecular volatiles in the product, and then uses pure water for hydrolysis. Sodium hydroxide acts as a neutralizer and a stabilizer. The combination of the two is beneficial to the breakage of the silicon-hydrogen bond in the crude silicone oil product, so that the hydrogen content of the product is 0. It can replace part of the dimethyl silicone oil and improve the product quality. Excellent stability, viscosity does not increase with time.

Description

technical field [0001] The invention relates to a high-boiling silicone oil production device and a preparation process thereof, belonging to the technical field of organic silicon production. Background technique [0002] Methylchlorosilane is an important raw material for the preparation of organosilicon materials. The preparation of methylchlorosilane monomer by the direct method will produce some by-products during the production process, such as organosilicon high boilers and low boilers. Organosilicon high boiler refers to the distillate with a boiling point exceeding 70°C in the crude product of methyl chlorosilane monomer, accounting for about 7% to 8%, mainly composed of Si—Si, Si—O—Si, Si—C—Si structure The content of each component varies with reaction conditions, reactor structure and other factors. Low boilers are fractions with a boiling point lower than 40°C in the crude product of methylchlorosilane monomer, accounting for about 4% to 5%. , the main componen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/24B01F5/00C08G77/06C08G77/04
CPCB01J19/24C08G77/04C08G77/06B01F25/42
Inventor 涂军文
Owner 江西华昊化工有限公司