Which one can draw a schematic diagram of the process from the ion-exchange membrane electrolyzer to hydrochloric acid?
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This post was last edited by sunjl1981 on 2013-1-6 at 22:56. Recently, we’ve been facing problems with fluctuations in the pressure of the hydrogen main pipe in our hydrochloric acid production process. Every time, the chlor-alkali plant claims that it’s not their fault, saying that their negative pressure curve remains stable. I hope that those with more experience can help by drawing a simplified diagram of the process from the ion exchange membrane cell to the hydrochloric acid production stage. By understanding their process flow, I can try to analyze the reasons behind the fluctuations in the hydrogen main pipe pressure. I’d also like to ask everyone for their insights regarding the causes of these pressure fluctuations. # &
Process flow chart: http://bbs.hcbbs.com/thread-210969-1-1.html. This post was last edited by Captain Yang on 2008-5-25 09:29.]
OP, can the hydrogen pressure in your ion exchange membrane electrolyzers be negative? Are the chlor-alkali plants lying to you? I had already been deceived by the people at the chlor-alkali plant; I realized that after spending a few years there. The fluctuations in hydrogen pressure are definitely related to the chlor-alkali plant. It’s important to see whether the hydrogen pressure from their hydrogen compressors remains stable as it reaches the hydrochloric acid production area; it’s also necessary to check how much water is discharged by the coolers. However, it’s possible that there is water accumulation in the hydrogen condenser.
There are various reasons for the pressure fluctuations in the hydrogen main pipe during the synthesis process, such as pressure control valves in previous processes, water accumulation in the hydrogen pipelines of this process, and the influence of other units that use hydrogen. Additionally, I’m not quite sure what the ‘negative pressure curve’ mentioned by the poster refers to
In the case of HCL pressure fluctuations, first check whether there is water accumulation in the outlet pipeline of the hydrogen Nasim unit, especially in those straight sections that form a bag-like shape; pay attention to ensuring proper drainage. Make sure to improve the drainage in each cooler as well! If chlorine is supplied steadily, everything related to the ion membrane should be fine. Communicate more with the chlorohydrin treatment section and pay attention to monitoring the temperature of the main pipes, as this helps with analysis. This post was last edited by tfx511024 on 2008-3-22 19:28.]
That’s great; I really admire it. Thank you all for your guidance :victory:. Could the reading permissions be changed? I really want to take a look, but I can’t download it. As for the issue related to the negative pressure curve, I only learned about it from the chlor-alkali department; I don’t really understand it myself, as they always check their negative pressure curve first whenever there’s a problem. Last edited by Lin Xuefeng on 2008-3-25 00:06.]
If possible, could the person who has the flowchart send it to me? Thank you in advance. My email address is: mlinxuefeng@163.com
Flowchart for chlorohydrogen treatment is available; do you need it? Email: JYCXB8221@163.COM
I haven’t been online for a long time. Friends on the 8th floor, if you see my reply, could you send me a diagram of the chlorohydrogen treatment process? My email address is: mlinxuefeng@163.com:victory:
I also want to learn*learn*. Which friend can give me one? Email: KNTWXW@163.com Thank you so much!
Our plant uses ion membrane electrolyzers; firstly, ion membranes do not require hydrogen compressors. The chlorine gas that emerges from the electrolyzers goes through treatment processes and is then sent to the chlorine distribution station from where it is delivered to customers. Hydrogen gas, on the other hand, exits the electrolyzers and passes through a washing tower before reaching the distribution station. The poster mentioned that there are significant fluctuations in the pressure of hydrogen and chlorine gas, so it is necessary to contact other units that use these gases. The hydrogen and chlorine gas produced by the ion membrane electrolyzers are automatically regulated by a DCS system, which helps to maintain stability. It’s also advisable to check the condition of the distribution station to ensure there is no water accumulation there :lol
Does the hydrogen from your plant come out of the electrolyzers, pass through the scrubber tower, and then go directly to the distribution station? No hydrogen press needed? So what is the supply pressure for hydrogen gas produced from hydrochloric acid?