Issues related to liquid level rise in the coke oven gas desulfurization system
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This post was last edited by caocheng on 2019-4-19 at 13:18. I would like to ask fellow professionals: First, in the coking industry, does wet ammonia desulfurization also face the problem of liquid level increase? Is there a problem of \"salt buildup\" in cases where there is no increase in liquid level? Second, for companies experiencing \"salt buildup\" or \"liquid level increase\", how is the salt extraction process performing? What are its processing capacity and product purity? III. In the aforementioned desulfurization processes, for those enterprises where the liquid level rises, is the method of pre-cooling gas always \"direct cooling\" (i.e., using air spray towers)?
We also have such a problem with the air-jet direct cooling process. I think this is one reason for fluid accumulation; another main reason is that the addition of ammonia also causes fluid accumulation problems.
Mm! If it is caused by the addition of ammonia, then it is possible to use ammonia with a higher concentration
From a systemic perspective, enhancing the capacity of pre-cooling and electrostatic capture systems helps improve the efficiency of desulfurization processes!
Yes! Factors such as the temperature difference of the gas before and after desulfurization, the fog-catching efficiency of the pre-cooling tower, and whether the mechanical seal of the circulation pump is airtight all have an impact, but they are controllable. I want to know just how significant the liquid rise effect is within a directly-cooled air spray tower, where ammonia vapor is vaporized and transferred into the desulfurization liquid!
Ammonia water refers to the circulating coolant spray
Could it be that the water in the gas has condensed and entered the desulfurization system? Is it still caused by adding ammonia water? Can the ammonia solution obtained by ammonia vaporization exceed 12%?
Ammonia solution has been replenished with concentrated ammonia; we are still analyzing and finding solutions for the other issues
If the pre-cooling tower uses a direct cooling process, saturated water will be introduced; if possible, observe the temperature of the gas at the exit of the pre-cooling tower after it has been reduced (to 5-6 degrees below the temperature of the desulfurization liquid)
The temperature of our desulfurization liquid is about 3 degrees higher than that of the gas