What material can resist corrosion when used with 1% dilute hydrochloric acid?
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Dear experts, I would like to ask: for 1% dilute hydrochloric acid at an operating temperature of 90 degrees, what material can be used to ensure corrosion resistance?
What is the remaining 99%? ~~If there is no water, then S30408 will suffice~~~
I’m sorry; I didn’t explain it clearly. The medium passes through the heat exchanger, and perhaps the steel-lined PTFE doesn’t have good thermal conductivity. 1% dilute hydrochloric acid. It’s 1% plus 99% water. I want to know whether the TA2 material can withstand it
With a graphite heat exchanger, no corrosion occurs even with hydrochloric acid of any concentration when used over a long period at boiling conditions.
Send me the process parameters, and I can help you calculate the heat exchange area and provide selection recommendations.
OP, temperature is also very important~~~ Without the right temperature, it’s not possible to choose the appropriate material~~~ Of course, graphite is an exception (under normal temperature conditions)~~~
The following materials can be used: Metals such as Hastelloy B, zirconium, and tantalum – all of which are relatively expensive materials. Non-metallic materials: silicon carbide, enamel, PTFE, graphite. For your question, I spent the whole day gathering technical information specifically, in the hope that it will be helpful to you
Graphite exhibits extremely excellent performance against hydrogen chloride corrosion. In various corrosive environments such as dry gaseous hydrogen chloride, humid hydrogen chloride containing water, hydrogen chloride combined with organic substances, hydrogen chloride combined with hydrogen fluoride, hydrochloric acids of different concentrations, and hydrochloric acid combined with sulfuric acid, graphite shows outstanding corrosion resistance, and its cost is much lower than that of other metal materials capable of withstanding such conditions.