A supergravity carbon dioxide capture system and a control method thereof

Abstract

The application belongs to the technical field of carbon capture system, and proposes a supergravity carbon dioxide capture system and a control method thereof. By introducing a supergravity desorption device and a heat recovery device, the energy consumption of regeneration is effectively reduced, and the energy utilization efficiency is improved. The cold lean liquid produced by the lean-liquid rich-liquid heat exchanger is transported to the inside of the absorption tower 1 by the second lean-liquid pump for recycling, so that the amine emission is effectively reduced, and the environmental pollution is reduced. By the multi-stage treatment of the regeneration gas heat recovery unit, the humidification section and the water washing section, the micro particles and aerosols in the flue gas are effectively removed, and the CO2 capture efficiency is improved. At the same time, according to the temperature of the rich liquid, the temperature of the regeneration gas, the load of the absorption tower and the composition of the flue gas, the flow control strategy of the water washing pump, the rich liquid pump, the first lean liquid pump and the second lean liquid pump is adjusted, and the rationality of heat utilization and temperature control is improved.

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