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Close plan should design tower of rectify of an acetic acid, but very much however knowledge has not mastered, connect basic select material to also cannot undertake normally. Here, the hope has professional to be able to give out directive, help us complete the design of tower of acetic acid rectify as soon as possible,
Acetic acid is a kind of very special solution, it is had to major metal certain caustic, the choice scope that this makes material of tower of acetic acid rectify qualitative is a lot of less. And acetic acid device still needs to move below higher temperature and complex medium condition, so the capable person that rectification tower can select does not have a few character. Pass ceaseless experiment discovery, be more than 65 ¡æ to contacting temperature and the acetic acid that is less than 120 ¡æ , and contain machine or inorganic impurity, so the tower of acetic acid rectify that uses operation is to choose the stainless steel that contain molybdenum very; And the acetic acid equipment that is more than 120 ¡æ to contain the impurity such as formic acid to temperature, also should corrode degree to choose material to pledge according to what differ, for instance titanium is mixed titanium alloy; Still having a range is the acetic acid equipment that is less than 65 ¡æ , that chooses 18-8 austenite stainless steel to wait for the tower of acetic acid rectify that makes to also can accord with a requirement. Because nickel and nickel alloy are in the solution pump such as acetic acid,have better corrosion resistance than stainless steel, but its price wants a lot of more expensive, because this wants a consideration to the circumstance that stainless steel cannot satisfy,use nickel and nickel alloy to make. Additional, our discovery zirconium and zirconium alloy also have the application that provides meal doing in tower of acetic acid rectify, because,still be its anti-corrosive stronger.