Most heat exchangers are made of carbon steel, stainless steel, aluminum, copper, titanium and other materials, and the heat transfer coefficient should meet the pressure drop requirements.When selecting a spiral plate heat exchanger, the side with a small heat transfer coefficient should have a large flow and temperature. Choose a smaller lateral fluid outlet speed should not be too large, and try to make the two liquid phases equal or similar on both sides of the heat transfer coefficient of the heat transfer surface.In order to improve the bearing capacity of the spiral plate, the space column between the plates is supported. When the flow rate is large and the pressure drop is small, the plate resistance should be selected to be small, otherwise the plate resistance should be selected.
The inlet and outlet subsidies of the cylinder nozzle and cutting fluid for the two types of heat exchangers should control the temperature of the hot fluid below the outlet pressure of the heat exchanger at a saturation temperature of 10 ° C. It is applied to the working temperature lower than the secondary pump. Generally, a cutting nozzle is used, and its fluid resistance is small, and impurities are easily discharged from the stainless steel reaction tank.