An energy-saving system and method for preparing phenylchlorosilane monomer

A technology of phenylchlorosilane and energy-saving system, which is applied in the direction of chemical instruments and methods, sustainable manufacturing/processing, and compounds of group 4/14 elements of the periodic table, etc. Utilization of low efficiency and other issues to achieve the effect of avoiding pipeline blockage, high energy utilization, and clean production

Active Publication Date: 2019-10-18
ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of low energy utilization efficiency, high energy consumption, and environmental pollution caused by tail gas emissions in the heating process of the prior art that uses fuel oil, gas or coal as fuel to produce high-temperature flue gas as the heat medium, and provides An energy-saving system and method for preparing phenylchlorosilane monomer

Method used

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  • An energy-saving system and method for preparing phenylchlorosilane monomer

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Embodiment 1

[0031] This example provides an energy-saving system for the preparation of phenylchlorosilane monomers, partly referred to figure 1 Shown, comprise the raw material path that is connected in sequence, reactor 6 and product path, and carry out the nitrogen circulation path of heat exchange with described raw material path, reactor or / and product path; Said raw material path includes respectively with described reactor Connected gas feed passage and solid feed passage;

[0032] The gas raw material passage includes a raw material liquid preheater 1, a raw material liquid vaporizer 2, and a raw gas electric heater 3 connected in sequence; the raw gas electric heater 3 is connected to the gas raw material inlet of the reactor 6;

[0033] The solid raw material path includes a silicon / copper powder drier 4 and a silicon / copper powder intermediate tank 5 connected in sequence; the silicon / copper powder intermediate tank 5 is connected to the solid raw material inlet of the reactor ...

Embodiment 2

[0037] In order to improve the safety and efficiency of the system, this embodiment further adds a temperature transmitter, a pressure transmitter and a regulating valve on the basis of Embodiment 1, such as figure 1 As shown, specifically:

[0038] In this embodiment, temperature transmitters are installed on the reactor, silicon-copper powder dryer, silicon-copper powder intermediate tank, dust collector, dust remover, and product heat exchanger, and the nitrogen gas main pipe of the nitrogen gas delivery pipeline is connected to each main body device Temperature transmitters are installed on the hot nitrogen inlet pipe and hot nitrogen bypass pipe, and temperature transmitters are installed on the output pipes of the preheater, vaporizer and raw gas electric heater;

[0039] Install a pressure transmitter on the nitrogen main pipe of the nitrogen delivery pipeline;

[0040] Hot nitrogen inlet pipe for reactor, hot nitrogen inlet pipe for silicon copper powder dryer, hot ni...

Embodiment 3

[0042] This example provides a method for preparing phenylchlorosilane monomer using the device described in Example 1 or Example 2. The method uses a direct method, using benzene chloride and silicon as raw materials, under the action of a copper catalyst After the reaction, the obtained phenylchlorosilane monomer product is mainly diphenyldichlorosilane, followed by monophenyltrichlorosilane, and a very small amount of triphenylchlorosilane.

[0043] The above method has many advantages such as high energy utilization rate, cleanness and no pollution, high process system safety, and high degree of automation.

[0044] Among them, using the production system provided in Example 2 that includes a temperature transmitter, a pressure transmitter, and a regulating valve can achieve a more excellent effect of energy saving and emission reduction.

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Abstract

The invention relates to an energy-saving system and method for preparing phenyl chlorosilane monomers. The system comprises a raw material channel, a reactor and a product channel connected in sequence, and a nitrogen circulation channel for performing heat exchange with the raw material channel, the reactor or / and the product channel, wherein the raw material channel comprises a gas raw material channel and a solid raw material channel connected with the reactor. The system and method provided by the invention have the advantages of being high in energy utilization rate, clean, pollution-free, high in process system safety, high in degree of automation and the like, have excellent promotion effects for reducing the production cost of the phenyl chlorosilane monomers, realizing clean production, improving the process safety and automation level and pushing large-scale production of the phenyl chlorosilane monomers, and achieve excellent environmental protection effects.

Description

technical field [0001] The invention relates to the production field of phenylchlorosilane monomers, in particular to an energy-saving system and method for preparing phenylchlorosilane monomers. Background technique [0002] Phenylchlorosilane monomer (collectively referred to as phenyltrichlorosilane and diphenyldichlorosilane) is a very versatile intermediate that can be used to prepare a variety of coupling agents and is also an important component in the preparation of silicone polymers. One of the monomers, it has a significant effect on improving the performance of polyorganosiloxane, especially on improving the heat resistance, chemical stability, and radiation resistance of silicone products. Its dosage and The importance is second only to methyl chlorosilane, ranking second. [0003] The production technology of phenylchlorosilane monomer at home and abroad is divided into direct method, thermal shrinkage method and Grignard method. Among them, the heat shrinkage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/16
CPCC07F7/16Y02P20/10
Inventor 杨林茂曾本忠张劲松张金刚徐勇谭建明
Owner ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
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