Three-stage injection: The connection between power steam pumps and liquid ring pumps
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What criteria are used to adjust the pressure for the three-stage injection in the ethylene glycol evaporator? What is the working principle of the three-stage injection pump? A higher pressure in the ethylene glycol evaporator results in a better vacuum effect, but maintaining the spraying temperature required for the three-stage injection increases the load on the heat exchanger. If the pressure in the ethylene glycol evaporator increases, does that also mean an increase in the load on the liquid ring pump? How can the vacuum system be balanced?
For the ethylene glycol power steam system, it is most appropriate to set the value to several kilograms, corresponding to that amount. Taking pipe resistance into account, the pressure of the power ethylene glycol steam at the injector should be reached; a slightly higher pressure at the outlet of the ethylene glycol evaporator is acceptable If the dynamic steam pressure of ethylene glycol increases, the consumption of dynamic steam rises; if the spray flow rate remains unchanged, the outlet temperature will definitely increase, and the flow rate to the next stage will have to increase as well.