Method for automatically controlling and adjusting sodium hydrosulfite synthesis system pressure and backflow quantity
A technology of automatic adjustment and system pressure, applied in the direction of thiosulfate/dithionite/polythionite, etc., can solve the problem of poor pressure stability of hydrosulfite synthesis reaction, poor hydrosulfite synthesis reaction stability, and hydrosulfite quality. Instability and other problems, to achieve the effect of solving uncertainty and instability, low production cost and stable product quality
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[0019] A method for the automatic control system to adjust the pressure and return flow of the hydrosulfite synthesis system, which is realized according to the following steps:
[0020] (1) Neutralize and adjust the value: under normal temperature and normal pressure, add 1200L of AE liquid material into the synthesis reaction kettle, start stirring, open the jacket steam of the synthesis reaction kettle and slowly heat up to 75°C~80°C, set the synthesis reaction kettle The internal pressure is 0.15Mpa, the pressure in the reaction kettle is automatically adjusted through the automatic adjustment valve of the synthesis tail gas discharge, and the tail gas return flow rate is set to 3L / s at the same time, and the tail gas return flow in the synthesis reaction kettle is automatically adjusted through the tail gas return flow automatic adjustment valve , add the AME liquid material into the synthesis reaction kettle until the pH value of the material in the synthesis reaction ket...
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