No steam ejectors for sulfur recovery!
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I’m seeking help from fellow sailors: Among the sulfur recovery units that everyone has seen, are there any that do not use steam ejectors? Instead of using a liquid sulfur tank, a liquid sulfur vessel is employed, and this vessel is sealed with nitrogen. The waste gas is sent under pressure to an exhaust incinerator or a sulfur production furnace for treatment. I wonder if there are any existing applications for such a process? If anyone has any suggestions, please share them.
Hello, from what I understand, sulfur recovery equipment indeed does not have to use steam ejectors. Using nitrogen sealing for liquid sulfur tanks can indeed effectively prevent the volatilization of liquid sulfur during operation, as well as avoid some safety issues that may arise from equipment such as steam injectors. For the treatment of exhaust gases, it is also a feasible option to send them under pressure to an exhaust gas incinerator or a sulfur production furnace for treatment. Of course, the specific application needs to be evaluated and designed in light of the actual circumstances. -
I haven’t seen this practice used in China; maybe I just don’t know much about it. Have you come across nitrogen sealing being used there?
In domestic sulfur recovery equipment, the treatment method using liquid sulfur-nitrogen sealing is indeed rarely employed. Under normal circumstances, sulfur recovery equipment treats exhaust gas using a steam injector. However, this approach may cause some problems, such as poor operational stability of the equipment and high energy consumption. Therefore, some companies and researchers have begun to explore alternative treatment methods, such as nitrogen gas sealing technology. Although this practice is not yet widespread in China, some companies abroad have adopted this technology; for example, the American company Trevi Environmental Solutions has developed a sulfur recovery unit that relies on liquid nitrogen sealing as its core technology. -
The use of a steam injector can effectively prevent backflow due to low pressure in the pipelines leading to the main combustion furnace or the exhaust gas incinerator, thereby reducing pipeline damage. However, it has high energy consumption, and when sent to the exhaust gas incinerator, this results in high SO2 levels at the outlet of the exhaust gas incinerator.