The distribution issue of sour gas into the reaction furnace?
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The sulfur rookie has a question he would like to ask the experts here. It turns out that here we handle acidic gases for cleaning separately; the control is relatively simple, and the ratios remain fairly stable! Now let’s deal with a portion of the ammonia-containing gas. In terms of process allocation, it currently goes together into the furnace head section, where the ratio fluctuates quite significantly. I remember reading on forums that when dealing with ammonia-containing gas, it’s best to send a portion of the acidic gas to the middle part of the reaction furnace; this helps ensure better decomposition of the ammonia-containing gas at the furnace head. Question: 1. Is it absolutely necessary to do it this way? How do people handle it in practice? 2. If this statement is true, what should we pay attention to when implementing this process or thereafter?
As long as the temperature in the sulfur production furnace chamber can remain above 1250 degrees, it is not necessary to introduce acidic gases into the furnace; however, this is generally required.
Since the ratio showed large fluctuations after feeding it into the burner, consideration was given to adopting the process with feed at the middle section. The temperature is indeed above 1250! The original emission level was just under 20, but after treatment with ammonia, it can rise to 100 if there are large fluctuations; under normal conditions it should still be above 30!
What process do you use to achieve a value below 20? What is the unit of measurement?
You guys have great control, huh? Could you explain in more detail what the specific process is?
Do your burners use ammonia for burning? If it is for ammonia combustion, can your acidic gas volume meet the requirement of 1250 degrees Celsius?
It’s probably because of the newly installed equipment; the instruments and devices are fairly decent! The processes are all standard; there isn’t much difference!
The design includes an ammonia combustion process, and the burner can handle it! The temperature during ammonia synthesis is generally kept above 1300°C!
Firstly, I think whether you shoot from the center or not has little impact on your ratio; fluctuations in the ratio are likely caused by unstable amounts and compositions of amino acids. When burning ammonia, it’s definitely better to invest in the middle route; for example, investing 1250 before and 1300 after – that’s definitely the right approach. 1250 is just a minimum. After pouring, I recommend not stopping casually. I’m not sure whether the acidic gas from the middle path enters directly or through the circular holes into the furnace; having material in the middle makes it less likely for blockages or overheating to occur, and no nitrogen protection is needed, which is good. A higher furnace temperature also facilitates the reaction
Thank you for your reply, but I’ve read in many posts that after it’s put into use in the central area, the section near the furnace is prone to overheating and damage! And by saying it won’t overheat, do you mean the burner area? Is the nitrogen protection also a measure to be implemented before operation in the middle section? Does it need to be turned off after operation begins?
On the contrary, I think it’s not the middle part that causes problems; it’s the section near the furnace body that tends to get damaged more easily. I wonder, how can it overheat with cold air being injected in? Just like a burner, it won’t get damaged when lit; it will only get damaged when there is no cold flow to carry away the heat when it’s not lit. On the contrary, if no injection is made in the middle section, vortices may form at the feed inlet, resulting in higher temperatures. This is my own idea; I haven’t discussed it with anyone else. The burner will not overheat; the amount can be controlled using the medium setting. We generally control the proportion of the middle stream to be 25%-30% of the total amount of regenerated + stripped amino acid gas. Nitrogen refers to the protective measure taken before operation, and it can be turned off after operation begins. If it stops again in the middle section, it needs to be protected again; otherwise, sulfur buildup may occur (unless it enters from right above the furnace) or overheating might happen.