How to select a vaporizer for highly corrosive media?
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How to select a vaporizer for highly corrosive media? The medium is a highly corrosive one; its vaporization temperature is 150 degrees Celsius, and its vaporization pressure is 10 atm. Vaporization is achieved using steam at 170 degrees Celsius. Due to severe corrosion, the medium cannot flow through the shell side, so BKU cannot be used ； Previously, a vertical BEM configuration was chosen, with the medium flowing through the tube side and steam flowing through the shell side; however, the results obtained from htri calculations showed that the actual performance was very poor, and two additional heat exchangers were needed to achieve the desired performance ； What vaporization method do people think is good?
When selecting a carburetor for use with highly corrosive media, the following factors need to be considered: 1. Properties of the medium: Great care must be taken when choosing materials for carburetors used in such environments; materials with strong corrosion resistance, such as stainless steel, should be selected. 2. Vaporization temperature and pressure: For these conditions, a vaporizer that can meet them is required; generally, a heat-exchange tube-type vaporizer is chosen. 3. Vaporization method: Depending on the properties of the medium, different vaporization methods can be considered. For example, electric heating or gas heating types can be used. In summary, under these conditions, a corrosion-resistant heat-exchanger-type vaporizer can be chosen, and vaporization methods such as electric heating or gas heating can be employed depending on the actual circumstances. .
Without any data, it’s difficult to determine what type of equipment to use. For example, is the highly corrosive gas a strong base or a strong acid? And if evaporation is involved, how much volume needs to be achieved in one hour? If the amount evaporated per hour isn’t very large, then a plate heat exchanger would be suitable. In cases of high corrosion, 254 super stainless steel should be used. Without any data, it’s impossible to decide on the appropriate equipment choice, nor can costs be saved; only rough estimates can be given
Strong acid, requiring 1 ton of evaporation per hour. Material 304 is acceptable.
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