Sulfur issues in sulfur recovery exhaust gases
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The sulfur content in the exhaust gas from our plant’s sulfur recovery process (after passing through two stages of the Claus process) is quite high. This high sulfur content makes it difficult to form sulfuric acid anhydride upon ammonia-based desulfurization. Even after inspecting and replacing the screens in the sulfur condenser and the sulfur capture device, the sulfur content in the exhaust gas remains very high Do any of you sea friends want to go through this together?
Are you using a two-stage Claus process? Usually it’s a three-stage or four-stage process; with only two stages, the sulfur content in the process gas is relatively high, and traditional wire mesh mist eliminators are not able to remove all of this sulfur – some amount of sulfur will still remain in the exhaust gases. That’s why an exhaust gas incinerator is used, and it’s important to ensure adequate air supply to guarantee complete combustion of the sulfur.
Well, I thought the same thing, but it’s very troublesome to change the manufacturing process now
Replace the internals of the sulfur separator and increase exhaust gas combustion.
Can another concentrator be used for sulfur concentration?
Well, this one hasn’t been replaced; it’s still using the original one
There is no need for exhaust gas combustion; the gases go directly into the ionic liquid sulfur recovery process, where the sulfur vapor is removed, allowing the exhaust gas to be discharged in compliance with standards
It is recommended to lower the temperature appropriately while ensuring that sulfur does not condense, and to provide a greater slope at the gas-liquid separation point
May I ask what model and specification the filter screens of everyone’s units are? There is also a high level of sulfur behind our filters, which causes the quench tower to get clogged frequently.
1. Increase the air supply for sulfur production. 2. Slightly increase the mesh size of the wire mesh defoamer. 3. Modify the equipment by adding another collector
Sulfur recovery exhaust gases are used to remove liquid sulfur; it is imperative not to rely on the traditional, outdated mesh demisters that have been in use since the 1960s, as they offer low separation efficiency, unstable operation, a tendency to clog, and high operating pressure drops. Today’s academic and research-oriented engineering companies have adopted high-efficiency vane-type gas-liquid demisting and mist separation devices, or counterflow multi-factor cyclone parent-child separation units, to upgrade and replace the traditional and outdated mesh demisters. Only some design firms that simply copy existing solutions and perfunctorily deal with clients still use traditional, outdated, and inefficient wire mesh foam eliminators. For more technical information on the high-efficiency gas-liquid demisting and separation devices using feather-shaped elements, or the reflective-flow multi-factor cyclone parent-child separation devices, please refer to: 1. For solutions to the serious liquid carryover problem in the hydrogen desulfurization tower of hydrogenation desulfurization units, visit http://bbs.hcbbs.com/thread-1489614-1-1.html to participate in the discussions. 2. Regarding the excessive SO2 generation by hydrogen fluoride production facilities and preventive measures against sulfur, please visit http://bbs.hcbbs.com/thread-1581729-1-1.html to participate in the discussion. 3. Participate in the discussion on the removal of liquid sulfur foam from SO2 in the sulfur dioxide production unit of the sulfolane plant at http://bbs.hcbbs.com/thread-1616252-1-1.html. I hope this will be helpful to you.