5 results about "Vacuum swing adsorption" patented technology

A sorbent reactor system for removing carbon dioxide from air is provided. The sorbent reactor system facilitates improved energy and thermal efficiency and includes a cascading heat pump. The cascading heat pump includes a plurality of heat exchangers fluidly connected to each other via a pipe network. The plurality of the heat exchangers are microchannels coated with sorbent material capable of adsorbing carbon dioxide from ambient air, with sorbent heat exchangers then disposed in vacuum chamber reactors fluidly connected to each other. A first heat transfer fluid flows and recirculates through the pipe network and heat exchangers of a first heat pump, transferring heat away from hot sorbent undergoing a cooldown process under vacuum and towards cool sorbent undergoing a desorption process under vacuum. A second heat transfer fluid flows and recirculates through a second heat pump to transfer energy from ambient air to the first heat transfer fluid.

The invention relates to a heat pump coupling type vacuum temperature swing adsorption flue gas carbon dioxide trapping system and method. The trapping system comprises an adsorption tower, a flue gas source heat pump module and a waste heat recovery module which are connected in parallel. Wherein the top of the adsorption tower is provided with cold and hot conduction oil inlets and a light product outlet, and the bottom is provided with cold and hot oil outlets, a flue gas inlet and a heavy product outlet; the flue gas source heat pump module realizes cold and heat combined supply through a refrigerant circulation loop, the evaporation module absorbs flue gas waste heat to drive a refrigerant to perform phase change to cool heat-conducting oil, and the condenser releases heat to heat the heat-conducting oil; and the waste heat recovery module precools flue gas through the heat exchange water tank and supplies energy. Through the heat pump coupling vacuum temperature swing adsorption technology, gradient utilization of cold and heat energy and efficient regeneration of the adsorbent are achieved, the problems of energy waste, low carbon dioxide separation efficiency, system complexity and the like in the prior art are solved, and efficient flue gas trapping is achieved.

The present application relates to the field of industrial flue gas carbon dioxide capture, and specifically discloses an industrial flue gas carbon capture system and method based on vacuum variable temperature adsorption, the system comprising a deep purification and pre-saturation adsorption module, a steam micro-pressure cleaning and pretreatment module, a pulsating vacuum and radiation regeneration module, and an energy upgrading and steam regeneration module; the method prevents deep contamination of the adsorbent through a pre-warning regeneration mechanism; the recovered low-temperature saturated steam is used to perform micro-pressure purging pretreatment on the pre-saturation adsorption bed; then, the pulsating vacuum and directional infrared radiation cooperative process is adopted to realize uniform and deep regeneration of the adsorbent bed at low temperature; finally, through the multi-stage flash evaporation and heat pump coupling technology, the system waste heat is recovered and upgraded, and the purging steam is regenerated, forming an energy closed loop. The present application solves the problems of long-term performance degradation of the adsorbent, uneven deep regeneration, and waste of ultra-low grade heat energy, and has the advantages of high capture efficiency, low regeneration energy consumption, long service life, etc.

This invention relates a carbon dioxide (CO2) capture and separation system (CCSS) and method for removing CO2 from the air while recuperating process heat for improved thermal efficiency. At least one reactor containing a solid sorbent is exposed to ambient air, whereby the solid sorbent adsorbs CO2 from the air. The solid sorbent undergoes a steam-assisted temperature-vacuum swing adsorption process using steam for heating and purging. The steam is generated by a heat pump through which an aqueous heat transfer fluid circulates. The heat transfer fluid is warmed using a heat exchanger, and the heat exchanger is warmed using ambient air or exhaust air recirculated from the at least one reactor. Recirculating the heat transfer fluid within condensers downstream of the at least one reactor captures waste heat during the process of separating CO2 from steam.

The invention relates to the technical field of carbon dioxide capture, in particular to a carbon capture device based on electrothermal vacuum variable-temperature desorption, a control method and related equipment. The device comprises a device shell, the device shell is provided with an air inlet and an air outlet, an area surrounded by the device shell forms an adsorption cavity, and the adsorption cavity is communicated with the air inlet and the air outlet; the N temperature swing adsorption modules are uniformly distributed in the adsorption cavity, each temperature swing adsorption module is provided with an electric heating pipe and an adsorbent carrier, the adsorbent carrier is arranged on the peripheral surface of the electric heating pipe, the adsorbent carrier is provided with an adsorbent, and the electric heating pipe is connected with a power supply through the device shell; and the vacuumizing module is used for extracting gas in the adsorption cavity. When the device is used for vacuum variable-temperature desorption, the electric heating pipe is electrified to generate heat, and the heat is transferred to the adsorption column carrier on the peripheral surface, so that a uniform temperature field is provided for an adsorbent. The carbon dioxide is captured through the vacuum variable-temperature desorption technology, and the carbon dioxide capturing efficiency can be improved.