A comparative study on CO2 capture performance of vacuum-pressure swing adsorption and pressure-temperature swing adsorption based on carbon pump cycle

Zhao, Ruikai; Zhao, Li; Deng, Shuai; Song, Chunfeng; He, Jia; Shao, Yawei; Li, Shuangjun

doi:10.1016/j.energy.2017.01.158

Cited by 81 publications

(18 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, the most cost-effective material will lead the best selection for the CO 2 capture process. 85,109,110,111 The aim of this section is to test different conditions in order to be able to select, for each structure, those conditions that minimize the energy requirements for CO 2 capture. The chosen model has some idealized conditions that it is relevant to highlight: experimentally, there are changes in temperature during the adsorption/desorption steps, and also along the column.…”

Section: Implications For the Application In Psa Vsa And Tsa Processesmentioning

confidence: 99%

“…In addition, the efficiency of the processes were calculated according to Zhao et al: 111,122 the minimum work was obtained by calculating the mixture entropies and the composition that showed the best performance in each material (flue gas conditions: T=313K, P=1bar). Values obtained are as high as 35-40%, obtained specifically for the improved VTSA processes, and even higher than the typical values reported in the literature 112 (i.e., between 10 and 30%).…”

Section: Combined Swing Adsorption Cyclesmentioning

confidence: 99%

See 1 more Smart Citation

Energetic evaluation of swing adsorption processes for CO 2 capture in selected MOFs and zeolites: Effect of impurities

Bahamón

Diaz-Marquez

Gamallo

et al. 2018

Chemical Engineering Journal

View full text Add to dashboard Cite

We present a systematic computational study of Mg-MOF-74, CuBTC and zeolite 13X for CO 2 separation from multi-component flue gas mixtures. The impurities' impact was evaluated at the molecular level and process conditions. Adsorption isotherms and isosteric heats of adsorption of pure (CO 2 , N 2 , O 2 , H 2 O, SO 2 and NO 2) components, binary and ternary mixtures were obtained from Grand Canonical Monte Carlo simulations. Working capacities, purities, recoveries and exergetic performances were evaluated for VSA/PSA/TSA processes. Results show that NO 2 has a negligible effect in the studied range. For H 2 O and SO 2 the energy requirements are reduced as the impurity content increases and recovery and purity increase up to an "optimal" point where a competition for CO 2 preferred adsorption sites produces a sharp drop in purity and the energetic index grows exponentially. The minimum energy requirement were obtained for TSA at a desorbing temperature of 443K in the three materials, with impurities of 1% H 2 O for CuBTC, 0.5% H 2 O for Mg-MOF-74 and 0.02% H 2 O for 13X, obtaining values of 1.13, 0.55 and 0.58 GJ/tCO 2 , respectively. Hybrid VTSA processes with impurities content in the feed mixture and CCS specifications achieve energy performances of 0.36 GJ/tCO 2 and 0.46 GJ/tCO 2 with Mg-MOF-74 and 13X, respectively. Mg-MOF-74 stands up as an attractive material for VTSA processes, presenting higher working capacities, purities and second-law efficiencies, with lower energy consumptions, also showing a better "buffer" behavior than zeolite 13X when trace impurities are present. This work represents the first

show abstract

Section: Implications For the Application In Psa Vsa And Tsa Processesmentioning

confidence: 99%

Section: Combined Swing Adsorption Cyclesmentioning

confidence: 99%

Energetic evaluation of swing adsorption processes for CO 2 capture in selected MOFs and zeolites: Effect of impurities

Bahamón

Diaz-Marquez

Gamallo

et al. 2018

Chemical Engineering Journal

View full text Add to dashboard Cite

show abstract

“…The efficiency of the second law can be defined based on the ratio of the minimum separation work to the actual input work. Based on the above theory, Zhao et al carried out theoretical analysis and sensitivity analysis of process parameters for TSA [ 16 ], VPSA [ 17 , 18 ], PTSA [ 17 ] and ESA [ 19 ] systems respectively, and obtained a series of qualitative conclusions. The literature-research results show that the second law efficiency of carbon capture by adsorption is mainly concentrated in the range of 10–20%.…”

Section: Introductionmentioning

confidence: 99%

Entropy Analysis of Temperature Swing Adsorption for CO2 Capture Using the Computational Fluid Dynamics (CFD) Method

Guo

Deng

et al. 2019

Entropy

Self Cite

View full text Add to dashboard Cite

Carbon capture by adsorption is supposed to be an effective method to reduce CO2 emissions, among which Temperature Swing Adsorption (TSA) can utilize low-grade thermal energy even from renewable energy source. At present, TSA technology still has several challenges to be practical application, such as intensive energy-consumption and low energy-efficiency. Thermodynamics could be a powerful method to explore the energy conversion mechanism of TSA, among which entropy analysis could further provide a clear picture on the irreversible loss, even with a possible strategy of energy-efficient improvement. Based on the theory of non-equilibrium thermodynamics, the entropy analysis of TSA cycle is conducted, using the Computational Fluid Dynamics (CFD) method. The physical model and conservation equations are established and calculation methods for entropy generation are presented as well. The entropy generation of each process in cycle is analyzed, and the influence from the main parameters of desorption process is presented with optimization analysis. Finally, the performance of the cycle with regeneration is compared with that of the cycle without regeneration, and the method of reducing the entropy generation is obtained as well. This paper provides possible directions of performance improvement of TSA cycle with regards on energy utilization efficiency and the reduction of irreversible loss.

show abstract

“…With the application of thermodynamic cycle concept in adsorption carbon capture technology, the energy required for adsorbents regeneration could be clarified. Zhao 9 has researched on the comparative study of vacuum-pressure swing adsorption (VPSA) and pressure-temperature swing adsorption (PTSA) process based on the thermodynamic carbon pump theory, the effect of operating parameters on energy-efficiency was studied with the establishment of VPSA and PTSA thermodynamic cycle. Jiang 8 has researched the 4-step temperature swing adsorption (TSA) process integrated with internal heat recovery (IHR) method, which primarily focuses on the improvement of exergy efficiency of the system.…”

Section: Introductionmentioning

confidence: 99%

Energy dissipation evaluation of temperature swing adsorption (TSA) cycle based on thermodynamic entropy insights

Deng

Zhao

et al. 2019

Sci Rep

Self Cite

View full text Add to dashboard Cite

The special report of the Intergovernmental Panel on Climate Change’s (IPCC) on global warming of 1.5 °C marks a critical point in climate negotiations, which emphasizes the importance to control the CO2 level in the atmosphere. The current technology cluster of CO2 capture is still energy-intensive which results in a substantial increase in costs, thus the efficient conversion among various forms of energy is the major topic of research. Considering that most of the existing research are primarily based on the viewpoint of energy conservation on a specific case study, the results thus could not be efficiently generalized as a condensed mechanism of energy dissipation. In this work, the entropy generation evaluation of a 4-step temperature swing adsorption (TSA) process was presented as a sample. The values and contribution distributions of various entropy generation in the thermodynamic cycle were calculated to evaluate the major energy dissipation. The results on contribution distribution of entropy generation and heat required were compared, the entropy generation distribution contributed by heat transfer decreases from 63.27% to 53.72% with internal heat recovery (IHR) method integrated. Thus the entropy generation saving potential of IHR method could be proved.

show abstract

A comparative study on CO2 capture performance of vacuum-pressure swing adsorption and pressure-temperature swing adsorption based on carbon pump cycle

Cited by 81 publications

References 28 publications

Energetic evaluation of swing adsorption processes for CO 2 capture in selected MOFs and zeolites: Effect of impurities

Energetic evaluation of swing adsorption processes for CO 2 capture in selected MOFs and zeolites: Effect of impurities

Entropy Analysis of Temperature Swing Adsorption for CO2 Capture Using the Computational Fluid Dynamics (CFD) Method

Energy dissipation evaluation of temperature swing adsorption (TSA) cycle based on thermodynamic entropy insights

Contact Info

Product

Resources

About