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Organosilicon hydrolyzate loop separation method

A loop separation and hydrolyzate technology, which is applied in the direction of silicon organic compounds, organic chemistry, chemical instruments and methods, etc., can solve the problems of poor viscosity repeatability, large equipment investment, high raw material cost, etc., and achieve the effect of cost saving and investment reduction

Active Publication Date: 2016-09-07
LUXI CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a trend to make 107 glue products by using organosilicon hydrolyzate. At present, DMC is used to polymerize 107 glue under the action of an alkaline catalyst, which has high raw material costs, complicated process, large equipment investment, difficult to control product quality, and poor viscosity repeatability. Bonding with products, poor physical properties and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A loop separation method for organosilicon hydrolyzate. At -0.097MPa and 100°C, the organosilicon hydrolyzate passes through a loop separation tower and rectifies according to the difference in boiling point between the line body and the ring body to realize the separation of the ring body and the line body. , the tower bottom obtains the linear body with a content of 75%, and the tower top obtains a ring body with a content of 98%.

Embodiment 2

[0019] A loop separation method for organosilicon hydrolyzate. At -0.097MPa and 150°C, the organosilicon hydrolyzate passes through a loop separation tower and rectifies according to the difference in the boiling point of the line body and the ring body to realize the separation of the ring body and the line body. , the line body with a content of 98% was obtained in the bottom of the tower, and the ring body with a content of 99.8% was obtained at the top of the tower.

[0020] The hydrolyzate at the outlet of the organosilicon hydrolyzate delivery pump is metered, and after heat exchange with the hot line body coming out of the separation tower kettle, it is transported to the ring line separation tower. The separation tower is divided into two sections, and the upper flash section is designed as a sieve plate or foam Cover the tray, the hydrolyzate is evenly distributed on the tray through the liquid distributor, and the heat brought by the lower ring steam continues to flas...

Embodiment 3

[0022] A loop separation method for organosilicon hydrolyzate. At -0.097MPa and 200°C, the organosilicon hydrolyzate passes through a loop separation tower and rectifies according to the difference in boiling point between the line body and the ring body to realize the separation of the ring body and the line body. , 82% of the line body was obtained in the bottom of the tower, and 98.6% of the ring body was obtained in the top of the tower.

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PUM

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Abstract

The invention discloses a ring separation method of organosilicon hydrolyzate. Under vacuum negative pressure and 100-200°C, the organosilicon hydrolyzate is rectified according to the difference in the boiling point of the line body and the ring body through a ring line separation tower to realize the ring body Separated from the line body, wherein the line body is obtained from the tower kettle, and the ring body is obtained from the top of the tower; the beneficial effect of the present invention is that after the ring line separation device is set up, the cracking load after the expansion of the monomer is satisfied, and a set of cracking devices is reduced. 107 glue made from the hydrolyzate after the separation of the ring line, which greatly saves the cost compared with the 107 glue made from DMC; after the separation of the ring line, the silicone hydrolyzate can be directly sold as a product.

Description

technical field [0001] The invention relates to the field of organosilicon, in particular to a ring separation method for organosilicon hydrolyzate. Background technique [0002] At present, organic silicon monomer manufacturers have excess capacity and the sales market is not booming. Only by continuously developing downstream products, making good use of by-products, adjusting product structure, and continuously carrying out technological transformation in terms of energy saving and consumption reduction to reduce production costs, can manufacturers be profitable at all. It is a trend to make 107 glue products by using organosilicon hydrolyzate. At present, DMC is used to polymerize 107 glue under the action of an alkaline catalyst, which has high raw material costs, complicated process, large equipment investment, difficult to control product quality, and poor viscosity repeatability. Bonding with the product, poor physical properties and other defects. Contents of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/20C07F7/18C07F7/21
Inventor 程继增崔行安刘飞
Owner LUXI CHEM GRP