For 99.4% sulfuric acid (H2SO4) at a temperature of 210°C, what type of valve material is suitable?
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I would like to ask which valve material is suitable for concentrated sulfuric acid at various temperatures and concentrations Thank you for the advice
High-silicon stainless steel, Monsanto’s Zerco alloy are both suitable
You can check Baidu for 【corrosion rate of sulfuric acid in various materials】
That makes sense; many instruments use this material to measure sulfuric acid
Pressured equipment and main pipelines are equipped with pressure relief systems, including safety valves, release valves, pressure control valves, and flare systems; in the event of overpressure, pressure is released through the safety valves, and combustible materials are burned in the flare. The flare system is equipped with strict liquid separation facilities to ensure that the gas fed into the flare contains no combustible liquids. To maintain the proper operation of the flare system, a certain amount of inert gas or fuel gas is continuously introduced into it to maintain a slight positive pressure, ensuring that the composition of the gases inside the flare tube does not fall within the explosive range. After the liquids are separated from the materials emitted during the process in the sealing system, the gas phase is sent to the flare. The equipment machinery will be designed to minimize leaks; for streams containing butane and benzene, a closed-loop sampling system, double mechanical seal pumps, shielded pumps, and tightly sealed control valves will be used for discharge.