What could be the reasons for simultaneous excess levels of hydrogen sulfide and sulfur dioxide in refining enterprises?
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What could be the reasons for simultaneous excess levels of hydrogen sulfide and sulfur dioxide in refining enterprises?
The sulfur content in the raw materials is relatively high; processing high-sulfur crude oil or such raw materials can lead to excessive sulfur levels. If there is no subsequent treatment in the sulfur treatment facility, this will also result in levels that exceed the allowed limits, which is not in line with environmental protection requirements
Your question is a bit too broad; refining companies usually have more than one exhaust emission outlet, so there are also many possible reasons. Let me explain one possible scenario. Generally, sulfur-containing gas must be released by burning it in a flare; therefore, in theory, it should contain only sulfur dioxide. However, there is a situation in which, during an accident, the hydrogen sulfide pipeline is connected separately to the flare, where it is burned along with the gas. Sometimes, incomplete combustion of hydrogen sulfide can occur, leading to levels of hydrogen sulfide that exceed the allowed limits – but this situation is rare. Also, if the sulfur recovery unit is not operating properly, it may lead to excessive levels of hydrogen sulfide in the exhaust gases emitted.
Agree with what was said on floor 3: it’s too broad and general; it should be more detailed
Well, since I’m not an expert, my questions aren’t very good
It’s very professional; I would like to express my sincere gratitude first. So it means it might be a problem with the device, right? Generally speaking, if there’s a problem with the sulfur plant, the people within the company should be able to detect it in a timely manner. How do they measure the hydrogen sulfide level, and what specific concentration constitutes a problem?
According to standards, an H2S detector is installed at the site of the installation; the allowable H2S concentration in the environment is no more than 10 mg/m3 (it may also be 15), and an alarm is triggered when this concentration is exceeded.