Device and method for removing small amount of alcohol impurities in hydrogen chloride gas
A technology for hydrogen chloride gas and alcohols, which is applied to a device for removing a small amount of alcohol impurities in hydrogen chloride gas, and the field of removing a small amount of alcohol impurities in hydrogen chloride gas, can solve problems such as easy blockage of the device, and achieve a good effect of removing alcohol.
Pending Publication Date: 2021-06-04
宁夏福瑞硅烷材料有限公司
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Problems solved by technology
[0004] Aiming at the deficiencies of the prior art, the present invention provides a device for removing a small amount of alcohol impurities in hydrogen chloride gas, which has the advantage of good alcohol removal effect and solves the problem of easy blockage inside the device
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] see figure 1 , the invention discloses a device for removing a small amount of alcohol impurities in hydrogen chloride gas, comprising a primary alcohol removal device 1, a secondary alcohol removal device 2 and a settling tank, the primary alcohol removal device 1 and the secondary alcohol removal device 2 They are connected through settling tank 3.
[0027] Described one-stage alcohol removal device 1 comprises one-stage leaching tower 4 and one-stag...
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The invention discloses a device and a method for removing a small amount of alcohol impurities in hydrogen chloride gas, and relates to the technical field of impurity removal. The device comprises a first-stage alcohol removal device, a second-stage alcohol removal device and a settling tank, wherein the first-stage alcohol removal device is communicated with the second-stage alcohol removal device through the settling tank. According to the device for removing a small amount of alcohol impurities in the hydrogen chloride gas, by arranging the first-stage alcohol removal device and the second-stage alcohol removal device, alcohols contained in the hydrogen chloride gas can be effectively removed. The method comprises the steps: alcohol-containing hydrogen chloride gas enters the lower part of a first-stage leaching tower from an inlet of the first-stage alcohol removal device, and then the hydrogen chloride gas moves upwards along a tower section of the first-stage leaching tower; the hydrogen chloride gas enters the lower part of the second-stage leaching tower after coming out of the top of the first-stage leaching tower, and then the hydrogen chloride gas moves upwards along the tower section of the second-stage leaching tower; and after the hydrogen chloride gas comes out from the top of the second-stage leaching tower, the hydrogen chloride gas sequentially passes through a condenser and a demister to remove silicon tetrachloride entrained in the hydrogen chloride gas.
Description
technical field [0001] The invention relates to the technical field of impurity removal, in particular to a device for removing a small amount of alcohol impurities in hydrogen chloride gas, and also relates to a method for removing a small amount of alcohol impurities in hydrogen chloride gas. Background technique [0002] In chemical production, a large amount of by-product hydrogen chloride gas will be produced. The comprehensive utilization of hydrogen chloride gas has become a major issue for chemical companies to realize circular economy. [0003] In the prior art, in a specific chemical production process, hydrogen chloride gas will contain a certain amount of alcohols, and the existence of these alcohol impurities will make subsequent production unable to operate. For example, in the synthesis of trichlorosilane, the raw material is the reaction of silicon powder and hydrogen chloride. If the hydrogen chloride contains alcohols, a side reaction will occur during the ...
Claims
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IPC IPC(8): B01D53/78B01D53/44B01D53/00C01B7/07
CPCB01D53/002B01D53/44B01D53/78B01D2251/108B01D2256/26C01B7/0706
Inventor 王敏强林勇李培林江清亮
Owner 宁夏福瑞硅烷材料有限公司