Excessive carbonyl sulfide in Linde’s low-temperature methanol wash
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Colleagues: I wonder if you have encountered the problem of excessive carbonyl sulfide levels in low-temperature methanol washing? How can we reduce its content? Everyone is welcome to share their ideas!
Which company’s catalyst should be used for the conversion? What model? What should be the bed temperature control for the converter?
All three converter catalysts are Xincheng’s wide-temperature resistance sulfur-resistant catalysts, and their temperature parameters are currently still within normal ranges
The organic sulfur that mainly comes from gasification remains undecomposed during the conversion process, and its concentration will definitely exceed the limits when it reaches the subsequent methanol washing stage. Do you use a low moisture ratio process, with a higher bed temperature as well?
High water vapor ratio; wide temperature range tolerance for sulfur conversion; outlet temperature of the first stage: 475, outlet temperature of the second stage: 380, outlet temperature of the third stage: 270; bed temperature
Organic sulfur still needs to be converted into hydrogen sulfide through transformation; the capacity of methanol washing alone is limited. First, analyze the changes in the organic sulfur content in the inlet and outlet streams to assess the hydrodesulfurization capability of the conversion catalyst.
Low-temperature methanol washing is suitable for removing high concentrations of H2S, for example reducing it from several hundred to dozens; subsequent steps involve hydrolysis using a hydrolyzing agent and adsorption using an organic sulfur adsorbent.
Other Lindner factories have cases in this regard
It is crucial to ensure that the sulfur content in the transformed gas does not exceed the specified limits! Otherwise, it will be very difficult to reduce the sulfur content on the low-alkali side!
Friend, has the problem of excessive carbonyl sulfide in Linde’s low-temperature methanol washing process been resolved? If it’s resolved, I hope you can share the handling methods or technical improvements. Thank you.