The problem that sodium carbonate cannot be lifted! !
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This post was last edited by Chemical Gas Purification on 2011-5-4 12:24. My unit has been unable to lift sodium carbonate for more than a year! We use tannin extract plus PDS desulfurizer, the highest is 4g/L, usually around 1g/L, the total alkalinity is around 30g/L, the injection pressure is controlled at 0.4 to 0.44Mpa, and the desulfurization efficiency is around 94% to 96%! ! And the pressure difference is difficult to control! ! Please give me some advice from seniors! !
Adding some caustic soda can increase the concentration of sodium carbonate. Appropriately reduce the concentration of pds or tannin extract. If the pressure difference is large, it may be that the tannin extract concentration is higher. Do not control the pds concentration too high.
You can test whether the PH value of the desulfurization liquid is greater than 8.5. If it is low, you can add a little sodium hydroxide as described on the second floor. Do not overdose the tannin extract. It is recommended that you go to the Changchun Dongshi Desulfurization Technology Collaboration Network to take a look.
reply: We added 1 ton of caustic soda, but the sodium carbonate did not increase. Instead, the pressure difference suddenly increased by 2 KP. We measured the pressure difference in the desulfurization tower and found that the upper section decreased, but the lower section increased! ! Did you fail to do a good job in some aspect? ?
2nd floor: Does a high catalyst concentration also affect the pressure difference?
System operating pressure? What is the bubble situation of the system?
Maybe the regeneration of the desulfurization liquid is not good, and the HS- content in the lean liquid and rich liquid should be analyzed.
Reply 5# Tianya Mingyue Coffee When the amount of desulfurization catalyst is too large, peroxidation will occur, causing sulfur to be regenerated in advance in the desulfurization tower, resulting in an increase in the desulfurization pressure difference. Please leave your email or phone number with us and we can discuss it in detail.
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