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Energy-saving device and process for vaporizing methyl chloride as organic silicon monomer raw material

A methyl chloride and organosilicon technology, which is applied in the field of organosilicon monomer production equipment, can solve the problems of energy waste, heat dissipation of steam condensed water, large energy consumption, etc., and achieves the effects of reducing production costs, reducing consumption, and smoothing hydrophobicity.

Active Publication Date: 2018-09-28
HUBEI XINGFA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing methyl chloride vaporization process can meet the process requirements, the use of heat is unreasonable. Heating the heat transfer oil or 1.0MPa will consume a lot of energy, while the heat carried by the gas produced at the top of the rectification tower is dissipated in vain, and at the same time consumes A large amount of cooling capacity of circulating water or chilled water
[0003] There are multiple steam-heated heat exchange equipment in the methyl chloride monomer synthesis unit. The steam condensate discharged from the heat exchange equipment is collected into a steam condensate collection tank. The temperature of 1.0MPa steam condensate is relatively high, generally 90~ 100°C, if not utilized, the heat in the steam condensed water can only be dissipated, resulting in energy waste

Method used

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  • Energy-saving device and process for vaporizing methyl chloride as organic silicon monomer raw material

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Experimental program
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Embodiment 1

[0019] An energy-saving device for the vaporization of organic silicon monomer raw material chloromethane, the top of the thermally coupled heat exchanger 1 is connected to the bottom of the steam condensed water preheater 2, the top of the steam condensed water preheater 2 is connected to the bottom of the reactor 3, and the reactor 3 The top is connected with the rectification tower 4, and the bottom of the rectification tower 4 is connected with the rectification tower reboiler 5 and then connected with the lower part of the rectification tower 4 to form a circulation loop.

[0020] The rectification column reboiler 5 is connected to the upper part of the steam condensate water preheater 2 .

[0021] The top of the rectification tower 4 is connected to the upper part of the thermal coupling heat exchanger 1 .

[0022] The bottom of the thermal coupling heat exchanger 1 is provided with a liquid methyl chloride inlet pipe; the lower part is provided with a rectification towe...

specific Embodiment approach

[0025] Liquid chloromethane first enters the thermally coupled heat exchanger (1) for primary preheating, and the heat medium used for preheating is the high-temperature gas at 50~60°C extracted from the top of the rectification tower (4); then enters the steam condensate water preheating Heater (2) performs two-stage preheating. The heat medium used for preheating is 1.0MPa steam condensed water. The 1.0MPa steam condensed water comes from the rectification tower reboiler (5). The heated gaseous methyl chloride has a temperature of 50~60°C and a pressure of 0.3~0.8MPa, and enters the reactor (3) for synthesis reaction of organosilicon monomer, and the reacted gas phase mixture enters the rectification tower (4) for purification and rectification The high-temperature gas extracted from the top of the tower (4) enters the thermally coupled heat exchanger (1) as a heat medium to cool, and then enters the condenser to condense, and can be extracted as a product.

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Abstract

The invention relates to vaporization energy saving equipment for a silicone monomer raw material methyl chloride and a process thereof. The top of a thermal-coupling heat exchanger is connected to the bottom of a vapor condensate preheater. The top of the vapor condensate preheater is connected to the bottom of a reactor. The top of the reactor is connected to a rectifying column. The bottom of the rectifying column is connected to a rectifying column reboiler and then is connected to the lower part of the rectifying column to form a circulation loop. The equipment and the process are advantageous in that the equipment fully utilizes heat of a column top material of a silicone production device that is the rectifying column and waste heat of 1.0 MPa vapor condensate, preheats the methyl chloride to a temperature required for the process, reduces the cooling amount of a rectifying column condenser, and effectively recovers the waste heat of the 1.0 MPa vapor condensate, thus achieving objectives of energy saving and consumption reduction.

Description

technical field [0001] The invention relates to an energy-saving device and process for vaporizing methyl chloride, a raw material of organosilicon monomer, and belongs to the technical field of organosilicon monomer production equipment. Background technique [0002] Before the methyl chloride enters the fluidized bed, it needs to be preheated and vaporized. The existing process generally uses 1.0MPa steam or heat transfer oil to heat low-temperature methyl chloride, while the gas produced from the top of the rectification tower of the organosilicon monomer synthesis device needs to be condensed with circulating water or chilled water. Although the existing methyl chloride vaporization process can meet the process requirements, the use of heat is unreasonable. Heating the heat transfer oil or 1.0MPa will consume a lot of energy, while the heat carried by the gas produced at the top of the rectification tower is dissipated in vain, and at the same time consumes A large amou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/16C07F7/02
CPCC07F7/02C07F7/16Y02P20/10
Inventor 李书兵颜昌锐万竺王文金肖靖
Owner HUBEI XINGFA CHEM GRP CO LTD
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