Questions regarding the dry gas and liquefied gas desulfurization system
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Our plant’s desulfurization system originally used desulfurizing agents supplied by a company in Nanjing; the performance of these agents was acceptable. However, starting in 2003, the regeneration tower began to experience continuous flooding, which made it impossible to carry out desulfurization operations. As a result, we adjusted the amount of antifoam agent injected； Online cleaning with amine solution ； Replace with new amine solution ； Anyway, every possible method was tried, and many experts were consulted, but the problem still couldn’t be solved. Once, when adding new amine solution, the amine solution produced by another company and used in other devices was accidentally brought to the site and injected into the system during the replenishment process. As a result, the system immediately stabilized, and no major fluctuations have occurred since then. Please advise, what causes this? Additionally, I heard that amine solutions need to be used in combination with antifoaming agents to achieve good antifoaming effects. It seems that amine solutions are divided into types A and B, and antifoaming agents are also divided into types A and B; type A amine solutions must be used together with type B antifoaming agents ； Is it true that Type B amine solution must be used in combination with Type A antifoam agent? Please give me some advice!
I’ve encountered this situation too; adding an antifoaming agent solves the problem
Packing agents can have negative effects after being used for a long time, and the amine solution also becomes contaminated as the system operates for longer periods. We are using our own patented tray technology to address this issue; it has been in use for almost two months now, and the results are very good.
I’m very interested. Could you explain it in detail?
It is mainly caused by foaming. Reasons: 1. The amine solution contains many impurities. 2. There is a high amount of light hydrocarbons in the amine solution. 3. The concentration of the amine solution is high.
I think there are three reasons: 1. The concentration of the amine solution is high; we use 15%. 2. The amine solution is dirty, so we changed the mesh size of the filter bags to 5 mesh. 3. The amount of antifoam added was too large. I hope this can be helpful to you! ! ! This post was last edited by Absolute Garbage on 2008-6-5 21:10.]
The focus should still be on the cleanliness of the amine solution, to prevent foaming, as well as on selecting the appropriate amine solution and equipment materials.