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We have designed a sulfur-resistant unit whose operating conditions, aside from temperature, are identical to those of the sulfur-resistant shift process in coal chemistry. It involves converting the crude syngas obtained from gasification directly at high temperatures. Currently, a portion of the gas exiting the first adiabatic reactor needs to be recycled; are there any sulfur-resistant compressors available for use under such conditions in industry? The hydrogen sulfide concentration is 0.1–0.4%, with a certain amount of water vapor present. It would be better if it could be used at high temperatures. Additionally, the gas exiting the reactor needs to pass through a heat exchanger; the gas temperature is 600–650 °C. The gas consists mainly of methane, CO, H2, as well as hydrogen sulfide at a concentration of 0.1–0.4%, along with a certain amount of water vapor. I was wondering if there are any heat exchangers suitable for use under sulfur-containing conditions in industrial applications. I hope colleagues who are familiar with this area can recommend some suppliers
When selecting the material for the heat exchanger, due to the presence of hydrogen sulfide (in aqueous form), stainless steel 304 or 316L can be used, as both provide excellent corrosion resistance as well as good heat exchange performance
Thank you for your reply. The key is also to withstand high temperatures of 600 degrees – is this material suitable? ? ? ?