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How should the sulfur recovery rate for sulfur recovery be calculated appropriately?

2020-05-05View Original

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Dear sea friends, has anyone calculated the sulfur recovery rate for sulfur recovery? How can we calculate it more accurately? Also, are there any fluctuations in the nitrogen oxides related to sulfur recovery, or do they rise above 200?
Reply #22020-05-06
Based on the flow rate of acidic gas and the hydrogen sulfide content in it, the mass of sulfur can be calculated. Whether sulfur or sulfuric acid is being produced, the mass of sulfur can be determined based on the amount of product produced; simply divide to get the result
Reply #32020-05-06
We produce sulfuric acid using the WSA process; under normal conditions, the nitrogen oxide levels are in the dozens. The levels increase slightly only during the rewarming phase after hypothermia. Our national control target is 240
Reply #42020-05-12
By low-temperature regeneration, do you mean the removal of ammonium carbonate crystals from the heat exchanger at the top of the thermal regeneration tower, or regeneration during plant shutdown? How high is \"a bit higher\"?
Reply #52020-05-12
I had thought of this method, but even if the flow rate and concentration of acidic gases remain stable, the production volume can only be determined based on the liquid level; I’m afraid the deviation in such cases will be quite large
Reply #62020-05-30
If the levels of nitrogen oxides are high, could it be that the air flow distribution in the burner head and the furnace chamber of the exhaust gas incinerator is not proper? In principle, the burner head should have a lack of oxygen while the furnace chamber should have an excess of oxygen; Secondly, the sulfur ratio in the previous system may not have been properly controlled; it is important to avoid excessive SO2 levels, as this can cause the temperature in the hydrogenation reactor bed to rise, which in turn affects the nitrogen oxides in the exhaust gases.
Reply #72020-05-30
Removal of ammonium carbonate crystals in the heat exchanger at the top of the thermal regeneration tower

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