What is the hydrogen sulfide content in typical desulfurization processes?
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With 600,000 tons of ramming, the hydrogen sulfide level remains unstable. About how much? I’m in my 20s, and the theoretical calculations aren’t that low either.
The amount of hydrogen sulfide in the gas depends on the sulfur content of the coal used as a blending material; without data on the sulfur content of that coal, it is difficult to determine the hydrogen sulfide level in the gas. The design is generally based on 6~8 g/Nm3.
You mean after desulfurization, right? Here the level is 20 mg/M3. We use the HPF process, which only involves wet desulfurization; there is no dry desulfurization. Under normal circumstances, such a low level should not be achieved, but the test results show it to be that low
It depends on what desulfurization process you are using.
A wet flue gas desulfurization efficiency of 100 is extremely rare; 20 is almost impossible, and it might be due to testing issues
Before desulfurization in our company, the level was generally 8–9 grams per cubic meter, with a maximum of 12 grams per cubic meter； After desulfurization, it can be reduced to below 20 milligrams per cubic meter.
May I ask, moderator, do you use multi-tower cascade desulfurization? Generally, the hydrogen sulfide content in the desulfurized gas from a single HPF tower is below 200 mg/m3; levels below 50 mg/m3 are quite rare.
Generally, HPF gas desulfurization can achieve levels below 200 mg/m3, which is already quite good.
The sulfur content in our plant is relatively high; the hydrogen sulfide level is above 10 g/Nm3, usually around 12 g
Reply: What are the specifications for such a single-tower system, and what is its processing capacity per unit time?
What a joke? 20 after desulfurization? ? ? ? ! ! !
If the value exceeds 8 g/Nm3 before the HPF desulfurization tower, then even if it’s 200 after the tower, it can’t be guaranteed; 20 is definitely an error in the test results.
In the case of HPF desulfurization, the value is generally 0.3~1.5 g/Nm3 behind the tower
The H2S content in coke oven gas varies depending on the sulfur content in the coal, generally ranging from 4 to 10 g/m3 of gas. After desulfurization, the required H2S level in urban gas intended for domestic use is less than 20 mg/m3 of gas.
The question is unclear; please rephrase it.
We use the alkaline desulfurization 888 catalyst; after desulfurization, the level is below 20, and sometimes it’s 0 – single-tower desulfurization
The common sulfur content after desulfurization is 200–300 mg; 20 mg applies mainly to urban gas users who have a methanol processing unit downstream.
In our facility, the level was around 5–8 g/m3 before desulfurization, and it dropped to below 20 mg/m3 after desulfurization.
Our unit usually uses 50–200 g/Nm3 behind the tower
For wet flue gas desulfurization, it is 200 for a single tower and 100 for two towers; 20 is not possible
There are various levels after desulfurization; some have 20, and some have 0. It depends on whether the system design is sufficiently scalable and cost-effective; naturally, the efficiency of series desulfurization will be high