Huadian Technology ›› 2021, Vol. 43 ›› Issue (6): 41-46.doi: 10.3969/j.issn.1674-1951.2021.06.005

• Low-carbon Technical Economy • Previous Articles     Next Articles

Effectiveness and techno-economic analysis on temperature swing adsorption for CO2 capture targeting at carbon neutrality

ZHAO Ruikai(), ZHAO Li, ZHAO Jun   

  1. Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Tianjin 300350, China
  • Received:2021-05-07 Revised:2021-05-27 Online:2021-06-25 Published:2021-06-25

Abstract:

The proposal of carbon neutrality clarified the direction of low-carbon development in China, and put forward new requirements on developing carbon capture technology. Adsorption is an important carbon capture technology due to its low energy consumption, low pollution, low reconstruction cost, etc. The minimum separative work calculated by ideal gas separation model and regeneration separation model are compared for the adsorption method. According to the concept of lost work, the effectiveness and cost of temperature swing adsorption(TSA) for CO2 capture can be analyzed from the perspective of regeneration temperature, initial volume fraction of CO2, and CO2 recovery rate. The analyzing results show that the minimum separation work calculated by regeneration separation model is approximately 20% higher than that of ideal gas separation model. The coefficient of performance of TSA for CO2 capture is around 1.6 and its operating cost is about 40 yuan/t. Finally, it is pointed out that as an important application method of direct air capture, adsorption method will further facilitate the coupling of carbon capture and renewable energy technologies. To pursue carbon neutrality, the development of adsorption carbon capture technology requires joint advancement of policies, technology research and business model.

Key words: carbon neutrality, carbon capture, temperature swing adsorption, renewable energy, energy efficiency, operating cost, energy storage

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