| abstract |
The invention discloses a multifunctional multi-stage flashing combined heat pump system for comprehensive utilization of desulfurization tower solution, comprising a boiler, desulfurization tower, multiple heat exchangers, multiple absorption heat pumps and multiple flashers. The desulfurization tower, multiple heat exchangers, multiple absorption heat pumps and multiple flashers are connected with each other through pipes to form boiler steam/hot water heat recovery process, desulfurization tower solution cooling cycle process, boiler flue gas process, desulfurization wastewater solution Concentration process and flash steam heating for heating and return water process. According to the principle of "corresponding temperature, energy cascade utilization", the present invention constructs a new process of multi-stage flash evaporation and concentration combined heat pump for intermediate reheating of desulfurization tower solution. Gas waste heat utilization, flue gas whitening, desulfurization wastewater concentration, district heating multiple functions; on the other hand, the multi-stage flash evaporation concentration efficiency and heating energy efficiency of desulfurization wastewater are improved. |