What is the appropriate concentration for NaOH spraying at the top of vacuum potassium carbonate?
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As the title suggests: What is the NaOH spraying concentration at the top of the vacuum potassium carbonate? Our company adopts a two-stage desulfurization and two-stage regeneration process as per the design, with an additional NaOH spraying stage at the top of the desulfurization tower. Designally, 2.5% is mixed with 40% NaOH to achieve 5%, which is then sprayed from the top of the desulfurization tower. Currently, the H2S level is not ideal, generally around 1000. Could the NaOH concentration at the top be increased a bit? How high should it be raised?
The main substances for removal are hydrogen sulfide and potassium carbonate in the lower section; sodium hydroxide in the upper section is used for secondary purification. Check the potassium carbonate solution
Phase 2 of our company has just started operations, and there are significant fluctuations in the steam supply as well as in the utilities used in Phase 1; as a result, the temperature at the top of the regeneration tower also fluctuates. It’s quite difficult to keep this temperature above 54 degrees. Once methanol production begins, it is estimated that the steam pressure will be sufficient.