Method and system for preparing anhydrous hydrogen chloride gas
A technology of hydrogen chloride gas and hydrogen chloride, applied in the direction of chlorine/hydrogen chloride, etc., can solve the problems of not deep dehydration, expensive equipment, serious problems, etc., and achieve the effect of deep dehydration, low cost of system equipment, and easy operation
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[0017] Flow Description:
[0018] The raw material gas ① enters from the upper part of the distillation column (C-101), flows upward, exchanges heat and mass with the condensate flowing downward from the top condenser (E-101) in the tower, and passes through the top condenser (E-101) After cooling and condensing, it is released from the top, and the product gas ③ discharged from the top is heated by the product heater (E-102) to form the final product gas ④; while the downward flowing liquid in the tower is discharged through the tower kettle to form a by-product ②.
[0019] The top condenser (E-101) pipes the hydrogen chloride gas, and the cooling medium outside the pipe. The cooling medium can be dichloroethane, which is cooled by the refrigerator (Z-101) and transported by the pump (P-101). The heat exchange medium used by the product heater (E-102) is ethylene glycol ⑤, and the cold ethylene glycol ⑥ is heated by hot water through the plate heat exchanger (E-103).
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