I need a centrifugal pump for 30% hydrochloric acid at 260°C – which type of centrifugal pump would be suitable?
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I’m not sure if pumps lined with PTFE can withstand such high temperatures, and titanium is too expensive. Gentlemen, please help choose an economical and practical pump!
Is hydrochloric acid at 260 degrees still hydrochloric acid? It won’t turn into a gas, can it still be pumped using a centrifugal pump?
I didn’t explain it clearly enough; the plan is to use a loop reactor for the chlorination reaction, at a temperature of 260°C, and during this process chlorine gas will react to produce hydrogen chloride
So what is the temperature of that final 30% hydrochloric acid?
A pump for a loop reactor is needed; the reaction medium involves the addition of chlorine gas, which results in the formation of hydrogen chloride. The temperature is above 260°C, and ultimately water is used to absorb this substance to produce 30% hydrochloric acid. At lower temperatures, a magnetic pump lined with PTFE can be used
30% hydrochloric acid at 260°C? ! Intuitively, it seems unreliable! What pressure is required to ensure that the liquid remains in the form of hydrochloric acid? At 260°C, the saturated vapor pressure of water is already around 4.8 MPa; therefore, the bubble point pressure of hydrochloric acid formed by 30% hydrogen chloride dissolved in water at 260°C is likely to be very high, and no data is available on this!
Use a loop reaction under these operating conditions! Stay tuned and keep learning!
……It seems that the temperature and pressure for the chlorination reaction should not be the same as those used for the absorption of hydrochloric acid later on… When pure water is used to absorb hydrogen chloride, 30% hydrochloric acid is obtained; the temperature of the hydrochloric acid is usually kept below 60°C, with a slight positive pressure. Fluorinated magnetic pump is fine :)
At this temperature, conventional non-metallic pumps probably won’t work; it’s recommended to use metal pumps instead. Continuous monitoring will be necessary to determine which type of pump works best in the end