Impact of sulfur-resistant shift catalyst activity on COS?
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Impact of sulfur-resistant shift catalyst activity on COS? Is the excessive level of COS in the gas from the low-temperature methanol washing process and in the CO2 gas at a certain methanol production facility related to a decline in the activity of the sulfur-resistant shift catalyst?
Sulfur-tolerant shift catalysts also have the catalytic function of COS hydrodesorption.
Sulfur-resistant shift catalysts possess the ability to convert COS. The main methods for converting COS in the shift process are hydrogenation and hydrolysis; hydrogenation yields better results, while hydrolysis is less effective. Hydrogenation requires a temperature of around 340 degrees or higher, and it also depends on the hydrogen content in the gas. Based on what you’ve described, it’s possible that the incomplete conversion is due to insufficient furnace temperature – if an isothermal furnace is being used, there may be no high-temperature zone inside the reactor, resulting in incomplete conversion
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This post was last edited by hai8487 on 2018-9-6 at 10:51. First of all, the conversion rate of COS by the shift catalyst should be no less than 95%; it is possible to analyze the changes in COS levels at the inlet and outlet of the shift reactor. Additionally, what is the COS removal efficiency of the low-temperature methanol washing process?
It doesn’t seem to have a significant impact; it’s a partial transformation, and the degree of cos removal is limited. The main issue remains low-temperature methanol washing