After HCL is synthesized, how is the excess hydrogen separated from the HCL gas?
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This post was last edited by sunjl1981 on 2013-1-6 at 23:43. May I ask, after HCL is synthesized, how is the excess hydrogen separated from the HCL gas? Is a separation tower used? # ， ， &
Tower separation is generally used to fully absorb HCl and prevent environmental pollution.
The original poster can understand by learning about the functions and structures of falling film absorbers and hydraulic ejectors. This post was last edited by sdajie on 2008-1-8 07:45.]
In the falling film absorber, HCI is fully absorbed by water to produce qualified hydrochloric acid; hydrogen is extracted using a hydraulic ejector and discharged as exhaust gas. Last edited by limingshuguang on 2008-1-8 09:19.]
Synthetic hydrochloric acid is produced using a synthesis furnace; any excess hydrogen is absorbed and then removed. If high-purity HCl is required, HCl gas obtained through hydrochloric acid desorption must be used. Last edited by limingshuguang on 2008-1-8 09:19.]
Is there a direct separation method, that is, one that does not involve absorption?
The method in middle school chemistry should be something like this: by using heated copper oxide powder. . . .
A certain factory uses pressure swing adsorption for the final separation. Hydrogen goes through mixed dehydration, conversion, water-alkali washing, hydrochloric acid desorption, compression, distillation, and finally pressure swing adsorption. Evacuated by pressure swing adsorption
Currently, hydrochloric acid synthesis is generally carried out using a 2-in-1 method` + falling film absorption + exhaust gas absorption + water jet pump, or via a direct 3-in-1 synthesis` to produce hydrochloric acid` + exhaust gas absorption + water jet pump
This is the process for separating excess hydrogen during the production of polyvinyl chloride; is that what the original poster was asking about?
If the original poster understands the functions of falling film absorbers and tail suction towers, they will understand; take a look at their internal structure as well