Seeking assistance with H2S removal technology in gas processing
Thread Content
Currently, there is a situation where the gas contains H2S that needs to be removed; therefore, I am seeking reliable desulfurization technologies. Please recommend some. The conditions for the feed gas and the desulfurization requirements are as follows:
Linde cryogenic methanol washing or amine-based desulfurization can be considered.
The post-drying index should not exceed 0.1 PPm, such as ppm(v); this is a very high requirement.
This sulfur removal requirement is quite stringent; neither the amine method nor low-temperature methanol washing can achieve a precision of 0.1 ppm. It is possible to use the amine method to reduce hydrogen sulfide levels to 1 ppm, and then employ a dry method to remove the remaining hydrogen sulfide. The acid gas regenerated by the amine method can produce sulfur as a by-product through the Claus or complexed iron process.
This sulfur removal requirement is quite stringent; neither the amine method nor low-temperature methanol washing can achieve a precision of 0.1 ppm. It is possible to use the amine method to reduce hydrogen sulfide levels to 1 ppm, and then employ a dry method to remove the remaining hydrogen sulfide. The acid gas regenerated by the amine method can produce sulfur as a by-product through the Claus or complexed iron process.
With a syngas volume of around 200,000 tons of methanol, the low-temperature methanol washing unit can ensure a sulfur content of 0.1X10-6. One can refer to the articles written by experts earlier; they contain information on the required parameters, consumption levels, and investment costs. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=318110
You can inquire about the advanced desulfurization technology available at the New Energy Research Institute of China University of Petroleum (Beijing), which can achieve effective desulfurization.
After most of the H2S is removed by the amine method, the established ZnO desulfurization technology can be considered to achieve the desired results.