Rectification control system and rectification control method for preparing electronic-grade monofluoromethane

A monofluoromethane and control system technology is applied in the field of rectification control system prepared by electronic grade monofluoromethane, which can solve the problems of low selectivity and expensive catalyst, and achieve the effect of optimizing purification accuracy

Active Publication Date: 2022-08-09
FUJIAN DEER TECH CORP
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Problems solved by technology

The raw material HCFC-21 or HCFC-31 of the gas-phase catalytic hydrodechlorination route will be difficult to obtain as the international community prohibits the production of ozone layer depleting substances and high greenhouse effect gases (GWP100>150), and the catalyst of this route is relatively expensive. less selective

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  • Rectification control system and rectification control method for preparing electronic-grade monofluoromethane
  • Rectification control system and rectification control method for preparing electronic-grade monofluoromethane
  • Rectification control system and rectification control method for preparing electronic-grade monofluoromethane

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preparation example Construction

[0040] The preparation system built based on this reaction principle includes the following main components: premixer, reactor, separation tower, water washing tower, alkali washing tower, drying tower, rectification tower, etc. Those of ordinary skill in the art should know that the purity of electronic grade monofluoromethane is as high as 99.9999%, therefore, higher requirements are placed on the control of the preparation system, especially the control of the rectification column.

[0041] The main control parameters of the distillation column include pressure and temperature, and the purity of monofluoromethane can be improved by controlling the pressure and temperature. However, the traditional control methods are mostly adjusted based on preset thresholds, that is, when the preset conditions are triggered, the pressure is increased or decreased, or the temperature is increased or decreased. This control method simplifies the distillation process. The complexity of the p...

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Abstract

The invention relates to the field of intelligent manufacturing of electronic-grade gas, and particularly discloses a rectification control system and a rectification control method for preparing electronic-grade fluoromethane. The rectification control system comprises a premixer, a reactor, a separating tower, a water washing tower, an alkaline washing tower, a drying tower, a rectifying tower and a rectification control tower system, according to the rectifying tower control system, an intelligent control method based on the artificial intelligence technology is used for dynamically regulating and controlling the pressure and temperature of a rectifying tower so as to optimize the purification precision of electronic-grade fluoromethane from a control end.

Description

technical field [0001] The invention relates to the field of intelligent manufacturing, and more particularly, to a rectification control system and a rectification control method for the preparation of electronic-grade monofluoromethane. Background technique [0002] Monofluoromethane, chemical formula CH 3 F, codenamed R41 or HFC-41, is a non-toxic, colorless, odorless, flammable liquefied gas stored in cylinders. Monofluoromethane is used in the process of semiconductor and electronic products, and it is also one of the ideal working fluids for low temperature heat pumps. [0003] At present, the synthesis route of monofluoromethane is mainly the gas-phase hydrodechlorination method. The raw material HCFC-21 or HCFC-31 of the gas-phase catalytic hydrodechlorination route will be difficult to obtain as the international community bans the production of ozone-depleting substances and high greenhouse effect gases (GWP100>150), and the catalysts of this route are relativ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/00B01D3/14B01D3/42C07C17/20C07C17/38C07C17/383C07C19/08B01J19/00
CPCB01D3/009B01D3/14B01D3/42C07C17/206C07C17/38C07C17/383B01J19/0006B01J2219/00006C07C19/08Y02P20/129
Inventor 刘志强华辉林百志张朝春王凤侠黄琦琦赖金香阙祥育
Owner FUJIAN DEER TECH CORP
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