Regulation of the final pressure swing adsorption rising circuit
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For the Huaxi pressure swing adsorption 10-6-1 process, what are the criteria for setting the upper and lower limits of the final rise circuit control valve, as well as the upper and lower limits for the final rise itself?
The final pressure rise control valve is used to increase the pressure in the tower that has already been equilibrated, to the pressure required for the product gas. If the pressure rises too quickly within the specified time, it has a significant impact on the pressure of the product gas; if the pressure rises too slowly, the desired pressure cannot be achieved. This, in turn, places a heavy strain on the adsorption tower when adsorption begins. The setting for the final pressure rise is determined based on the pressure required by the product gas, and it should not differ too much from the pressure of the product gas itself – that is, the pressure equalization process must be completed within the time required for equilibration.
What are the effects of too fast voltage rise?
Final pressurization involves pouring the purified hydrogen gas from the product pipeline into the adsorption tower, thereby raising the pressure in the tower to match that of the product gas. If the pressure is increased too quickly, the supply volume of the product gas decreases, which leads to fluctuations in the pressure of the hydrogen-using units downstream and consequently to production disruptions.