Thermodynamic carbon pump cycle construction method for indirect heat exchange and temperature swing adsorption carbon capture technology

Abstract

The invention discloses a thermodynamics carbon pump circulation building method with an indirect heat transfer temperature swing adsorption carbon capture technology. On the basis of physical properties of an adsorbent material, an adsorption phase and a flue gas in a circulation system, a circulation process is built; the circulation building method comprises an adsorption process, a preheating process, an desorption process and a precooling process; the circulation process is presented by a relation of carbon dioxide adsorption quantity-partial pressure of carbon dioxide-temperature, and an indirect heat transfer temperature swing adsorption carbon capture system is designed according to the circulation process; the circulation process can be also presented by a relation of a log value of a partial pressure value of carbon dioxide-a negative number of reciprocal of temperature-carbon dioxide adsorption quantity converted from the relation of carbon dioxide adsorption quantity-partial pressure of carbon dioxide-temperature. According to the thermodynamics carbon pump circulation building method provided by the invention, a thermodynamic study method is applied to the field of a carbon capture technology, wherein thermodynamic carbon pump circulation is used as a 'quantized ruler' of a thermodynamic idea, so that the energy-saving potential of the carbon capture technology can be effectively exploited.

Description

technical field [0001] The invention relates to the thermodynamic research field of carbon capture technology, in particular to a thermodynamic carbon pump cycle construction method of indirect heat exchange and temperature swing adsorption carbon capture technology. Background technique [0002] The increase in global carbon dioxide concentration has brought about an increase in temperature, increasing extreme weather around the world, and causing the earth's polar ice caps to begin to melt and sea levels to rise. Since 1900, the average global sea level has risen by 19 centimeters, and the rate of rise has been accelerating in recent years, which will seriously threaten many islands and low-lying countries. Due to the negative contribution of carbon dioxide to the greenhouse effect, climate issues have gradually become the focus of global attention. The usual means of mitigating climate change include improving energy conversion efficiency, using renewable energy, and car...

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Problems solved by technology

There are mainly three types of models in the academic circle: (1) Gas separation model, this type of model is a lumped model with good universality, but it is too simplified

(2) Process analysis model. This type of model is characterized by strong pertinence to cases, but its disadvantages are poor universality, "one case for one discussion", and lack of grasp of common laws

(3) Full life cycle or emergy analysis models, which are derived from the analysis of environmental emissions on a large time scale of the product, and have insufficient grasp of the details of the energy-to-mass conversion characteristics of the process

[0008] In summary, the existing related patents cannot achieve the goal of developing an ideal thermodynamic research method as described above

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