The equilibrium concentration problem of HCl water absorption
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This post was last edited by sunjl1981 on 2013-1-6 19:57 An industrial exhaust gas contains 10000mg/l HCl gas. If the exhaust gas is absorbed with clean water, what is the highest concentration of the circulating liquid (hydrochloric acid)? The temperature is around 40 degrees. Due to limited data, the concentration calculated using the equilibrium constant in the textbook is very low. I don’t know why. This post was last edited by yzhms on 2009-4-1 12:37 ] # , , &
What are your local emission standards? It’s impossible to completely absorb them.
It may be that the concentration of hydrogen chloride is low. You can consider absorbing it into dilute acid first, and then thickening and recycling the by-product acid system.
150mg/Nm3 The issue of tail suction rate has not yet been considered. The main consideration is the maximum concentration of hydrochloric acid under this gas concentration.
1 Is it 10,000 mg per cubic meter, or is the partial pressure very high? 2 According to 10,000 mg per cubic meter, the partial pressure of hydrogen chloride is about 5mmHg. Looking at the table, we can see that the concentration of hydrochloric acid at 30°C is about 26%, and the concentration of hydrochloric acid at 0°C is about 31%.
Thanks! Yes, it's 10,000 mg per cubic meter. What table are you looking for? That’s the kind of information you’re looking for. Is the data based on actual industrial measurements or theoretical calculations? It seems that there is a big difference in the calculation by looking up the equilibrium constant.