Integrated vacuum pressure swing adsorption and Rectisol process for CO2 capture from underground coal gasification syngas

doi:10.1016/j.cjche.2022.08.003

Abstract

Abstract: An integrated vacuum pressure swing adsorption (VPSA) and Rectisol process is proposed for CO₂ capture from underground coal gasification (UCG) syngas. A ten-bed VPSA process with silica gel adsorbent is firstly designed to pre-separate and capture 74.57% CO₂ with a CO₂ purity of 98.35% from UCG syngas (CH₄/CO/CO₂/H₂/N₂ = 30.77%/6.15%/44.10%/18.46%/0.52%, mole fraction, from Shaar Lake Mine Field, Xinjiang Province, China) with a feed pressure of 3.5 MPa. Subsequently, the Rectisol process is constructed to furtherly remove and capture the residual CO₂ remained in light product gas from the VPSA process using cryogenic methanol (233.15 K, 100% (mass)) as absorbent. A final purified gas with CO₂ concentration lower than 3% and a regenerated CO₂ product with CO₂ purity higher than 95% were achieved by using the Rectisol process. Comparisons indicate that the energy consumption is deceased from 2.143 MJ·kg^–1 of the single Rectisol process to 1.008 MJ·kg^–1 of the integrated VPSA & Rectisol process, which demonstrated that the deployed VPSA was an energy conservation process for CO₂ capture from UCG syngas. Additionally, the high-value gas (e.g., CH₄) loss can be decreased and the effects of key operating parameters on the process performances were detailed.

Key words: Underground coal gasification, Vacuum pressure swing adsorption, Rectisol process, CO₂ capture, Integrated process

摘要： An integrated vacuum pressure swing adsorption (VPSA) and Rectisol process is proposed for CO₂ capture from underground coal gasification (UCG) syngas. A ten-bed VPSA process with silica gel adsorbent is firstly designed to pre-separate and capture 74.57% CO₂ with a CO₂ purity of 98.35% from UCG syngas (CH₄/CO/CO₂/H₂/N₂ = 30.77%/6.15%/44.10%/18.46%/0.52%, mole fraction, from Shaar Lake Mine Field, Xinjiang Province, China) with a feed pressure of 3.5 MPa. Subsequently, the Rectisol process is constructed to furtherly remove and capture the residual CO₂ remained in light product gas from the VPSA process using cryogenic methanol (233.15 K, 100% (mass)) as absorbent. A final purified gas with CO₂ concentration lower than 3% and a regenerated CO₂ product with CO₂ purity higher than 95% were achieved by using the Rectisol process. Comparisons indicate that the energy consumption is deceased from 2.143 MJ·kg^–1 of the single Rectisol process to 1.008 MJ·kg^–1 of the integrated VPSA & Rectisol process, which demonstrated that the deployed VPSA was an energy conservation process for CO₂ capture from UCG syngas. Additionally, the high-value gas (e.g., CH₄) loss can be decreased and the effects of key operating parameters on the process performances were detailed.

关键词: Underground coal gasification, Vacuum pressure swing adsorption, Rectisol process, CO₂ capture, Integrated process

Jian Wang, Yuanhui Shen, Donghui Zhang, Zhongli Tang, Wenbin Li. Integrated vacuum pressure swing adsorption and Rectisol process for CO₂ capture from underground coal gasification syngas[J]. Chinese Journal of Chemical Engineering, 2023, 57(5): 265-279.

References

[1] A. Korre, S. Durucan, Z.G. Nie, Life cycle environmental impact assessment of coupled underground coal gasification and CO₂ capture and storage: Alternative end uses for the UCG product gases, Int. J. Greenh. Gas Control 91 (2019) 102836.
[2] S. Maev, M.S. Blinderman, G.P. Gruber, Underground coal gasification (UCG) to products: Designs, efficiencies, and economics, In: Underground Coal Gasification and Combustion Elsevier, Amsterdam, 2018, pp. 435–468.
[3] J.F. Brand, J.C. van Dyk, F.B. Waanders, Conceptual use of vortex technologies for syngas purification and separation in UCG applications, J. S. Afr. Inst. Min. Metall. 118 (10) (2018) 1029–1039
[4] A. de Angelis, Natural gas removal of hydrogen sulphide and mercaptans, Appl. Catal. B Environ. 113-114 (2012) 37–42.
[5] M. Seifi, Simulation and modeling of underground coal gasification using porous medium approach, Ph. D. Thesis, University of Calgary, Canada, 2014.
[6] B. Olateju, A. Kumar, Techno-economic assessment of hydrogen production from underground coal gasification (UCG) in Western Canada with carbon capture and sequestration (CCS) for upgrading bitumen from oil sands, Appl. Energy 111 (2013) 428–440.
[7] N. Nakaten, T. Kempka, Techno-economic comparison of onshore and offshore underground coal gasification end-product competitiveness, Energies 10 (10) (2017) 1643.
[8] C. Otto, T. Kempka, Synthesis gas composition prediction for underground coal gasification using a thermochemical equilibrium modeling approach, Energies 13 (5) (2020) 1171.
[9] L. Li, N. Zhao, W. Wei, Y.H. Sun, A review of research progress on CO₂ capture, storage, and utilization in Chinese Academy of Sciences, Fuel 108 (2013) 112–130.
[10] S.Y. Pan, E. Chang, P.C. Chiang, CO₂ capture by accelerated carbonation of alkaline wastes: A review on its principles and applications, Aerosol Air Qual. Res. 12 (5) (2012) 770–791.
[11] A. Wilk, L. Więcław-Solny, A. Tatarczuk, A. Krótki, T. Spietz, T. Chwoła, Solvent selection for CO₂ capture from gases with high carbon dioxide concentration, Korean J. Chem. Eng. 34 (8) (2017) 2275–2283.
[12] A.M. Ribeiro, J.C. Santos, A.E. Rodrigues, S. Rifflart, Syngas stoichiometric adjustment for methanol production and co-capture of carbon dioxide by pressure swing adsorption, Sep. Sci. Technol. 47 (6) (2012) 850–866.
[13] C.F. Song, Y. Kitamura, S.H. Li, Evaluation of Stirling cooler system for cryogenic CO₂ capture, Appl. Energy 98 (2012) 491–501.
[14] F. Fazlollahi, S. Saeidi, M.S. Safdari, M. Sarkari, J.J. Klemeš, L.L. Baxter, Effect of operating conditions on cryogenic carbon dioxide removal, Energy Technol. 5 (9) (2017) 1588–1598.
[15] G. Xu, F.F. Liang, Y.P. Yang, Y. Hu, K. Zhang, W.Y. Liu, An improved CO₂ separation and purification system based on cryogenic separation and distillation theory, Energies 7 (5) (2014) 3484–3502.
[16] J.K. Adewole, A.L. Ahmad, S. Ismail, C.P. Leo, Current challenges in membrane separation of CO₂ from natural gas: A review, Int. J. Greenh. Gas Control 17 (2013) 46–65.
[17] S.I. Nakao, K. Yogo, K. Goto, T. Kai, H. Yamada, Advanced CO₂ Capture Technologies: Absorption, Adsorption, and Membrane Separation Methods, Springer, Cham, 2019.
[18] G. Wiciak, J. Kotowicz, Experimental stand for CO₂ membrane separation, J. Power Technol. 91 (4) (2011) 171.
[19] A.M. Ribeiro, J.C. Santos, A.E. Rodrigues, S. Rifflart, Pressure swing adsorption process in coal to Fischer–Tropsch fuels with CO₂ capture, Energy Fuels 26 (2) (2012) 1246–1253.
[20] S. Rifflart, A.M.A.P. Ribeiro, J.C.G.D.F. Dos, A.E. Rodrigues, Low energy cyclic psa process, in, Google Patents, 2014.
[21] C.A. Grande, R. Blom, A. Möller, J. Möllmer, High-pressure separation of CH₄/CO₂ using activated carbon, Chem. Eng. Sci. 89 (2013) 10–20.
[22] L.F. Tao, P. Xiao, A. Qader, P.A. Webley, CO₂ capture from high concentration CO₂ natural gas by pressure swing adsorption at the CO₂CRC Otway site, Australia, Int. J. Greenh. Gas Control 83 (2019) 1–10.
[23] J. Shang, A. Hanif, G. Li, G.K. Xiao, J.Z. Liu, P. Xiao, P.A. Webley, Separation of CO₂ and CH4 by pressure swing adsorption using a molecular trapdoor chabazite adsorbent for natural gas purification, Ind. Eng. Chem. Res. 59 (16) (2020) 7857–7865.
[24] Y.H. Shen, Y. Zhou, D.D. Li, Q. Fu, D.H. Zhang, P. Na, Dual-reflux pressure swing adsorption process for carbon dioxide capture from dry flue gas, Int. J. Greenh. Gas Control 65 (2017) 55–64.
[25] J.P. Tian, Y.H. Shen, D.H. Zhang, Z.L. Tang, CO₂ capture by vacuum pressure swing adsorption from dry flue gas with a structured composite adsorption medium, J. Environ. Chem. Eng. 9 (5) (2021) 106037.
[26] H.Y. Yan, Q. Fu, Y. Zhou, D.D. Li, D.H. Zhang, CO₂ capture from dry flue gas by pressure vacuum swing adsorption: A systematic simulation and optimization, Int. J. Greenh. Gas Control 51 (2016) 1–10.
[27] S. Krishnamurthy, V.R. Rao, S. Guntuka, P. Sharratt, R. Haghpanah, A. Rajendran, M. Amanullah, I.A. Karimi, S. Farooq, CO₂ capture from dry flue gas by vacuum swing adsorption: A pilot plant study, AIChE J. 60 (5) (2014) 1830–1842.
[28] X.X. Yu, B. Liu, Y.H. Shen, D.H. Zhang, Design and experiment of high-productivity two-stage vacuum pressure swing adsorption process for carbon capturing from dry flue gas, Chin. J. Chem. Eng. 43 (2022) 378–391.
[29] N. Jiang, Y.H. Shen, B. Liu, D.H. Zhang, Z.L. Tang, G.B. Li, B. Fu, CO₂ capture from dry flue gas by means of VPSA, TSA and TVSA, J. CO₂ Util. 35 (2020) 153–168.
[30] D.D. Li, Y. Zhou, Y.H. Shen, W.N. Sun, Q. Fu, H.Y. Yan, D.H. Zhang, Experiment and simulation for separating CO₂/N₂ by dual-reflux pressure swing adsorption process, Chem. Eng. J. 297 (2016) 315–324.
[31] Z.B. Guan, Y.Y. Wang, X.X. Yu, Y.H. Shen, D.R. He, Z.L. Tang, W.B. Li, D.H. Zhang, Simulation and analysis of dual-reflux pressure swing adsorption using silica gel for blue coal gas initial separation, Int. J. Hydrog. Energy 46 (1) (2021) 683–696.
[32] L.A.M. Rocha, K.A. Andreassen, C.A. Grande, Separation of CO₂/CH₄ using carbon molecular sieve (CMS) at low and high pressure, Chem. Eng. Sci. 164 (2017) 148–157.
[33] A. Ntiamoah, J.H. Ling, P. Xiao, P.A. Webley, Y.C. Zhai, CO₂ capture by vacuum swing adsorption: Role of multiple pressure equalization steps, Adsorption 21 (6–7) (2015) 509–522.
[34] A. Jayaraman, A.S. Chiao, J. Padin, R.T. Yang, C.L. Munson, Kinetic separation of methane/carbon dioxide by molecular sieve carbons, Sep. Sci. Technol. 37 (11) (2002) 2505–2528.
[35] G.K. Xiao, P. Xiao, A. Hoadley, P. Webley, Integrated adsorption and absorption process for post-combustion CO₂ capture, Front. Chem. Sci. Eng. 15 (3) (2021) 483–492.
[36] M. Gatti, E. Martelli, F. Marechal, S. Consonni, Review, modeling, Heat Integration, and improved schemes of Rectisol^®-based processes for CO₂ capture, Appl. Therm. Eng. 70 (2) (2014) 1123–1140.
[37] L. Sun, R. Smith, Rectisol wash process simulation and analysis, J. Clean. Prod. 39 (2013) 321–328.
[38] G. Hochgesand, Rectisol and purisol, Ind. Eng. Chem. 62 (7) (1970) 37–43.
[39] S.H. Park, S.J. Lee, J.W. Lee, S.N. Chun, J.B. Lee, The quantitative evaluation of two-stage pre-combustion CO₂ capture processes using the physical solvents with various design parameters, Energy 81 (2015) 47–55.
[40] J.J. Zheng, Y.P. Zhou, Y.T. Zhi, W. Su, Y. Sun, Sorption equilibria of CO₂ on silica-gels in the presence of water, Adsorption 18 (2) (2012) 121–126.
[41] P. Goyal, M.J. Purdue, S. Farooq, Adsorption and diffusion of N₂ and CO₂ and their mixture on silica gel, Ind. Eng. Chem. Res. 58 (42) (2019) 19611–19622.
[42] J.T. Anyanwu, Y.R. Wang, R.T. Yang, Amine-grafted silica gels for CO₂ capture including direct air capture, Ind. Eng. Chem. Res. 59 (15) (2020) 7072–7079.
[43] J.P. Zhang, Z.W. Li, Z.H. Zhang, R. Liu, B.Z. Chu, B.H. Yan, Techno-economic analysis of integrating a CO₂ hydrogenation-to-methanol unit with a coal-to-methanol process for CO₂ reduction, ACS Sustain. Chem. Eng. 8 (49) (2020) 18062–18070.
[44] C.H. Yu, Y.J. Lin, D.S.H. Wong, J.C. Bruno, C.C. Chen, Modeling fluid phase equilibria of carbon dioxide-methanol binary system, Fluid Phase Equilibria 529 (2021) 112866.
[45] D.Y. Peng, D.B. Robinson, A new two-constant equation of state, Ind. Eng. Chem. Fund. 15 (1) (1976) 59–64.
[46] A.Z. Panagiotopoulos, R.C. Reid, New mixing rule for cubic equations of state for highly polar, asymmetric systems, In: Equations of State, American Chemical Society, . Washington, DC, 1986, pp. 571–582.
[47] A.Z. Panagiotopoulos, R.C. Reid, High-pressure phase equilibria in ternary fluid mixtures with a supercritical component, In: ACS Symposium Series, American Chemical Society, Washington, DC, 1987, pp. 115–129.
[48] H.X. Gao, L.P. Zhou, X. Luo, Z.W. Liang, Optimized process configuration for CO₂ recovery from crude synthesis gas via a rectisol wash process, Int. J. Greenh. Gas Control 79 (2018) 83–90.
[49] X. Liu, S.Y. Yang, Z.G. Hu, Y. Qian, Simulation and assessment of an integrated acid gas removal process with higher CO₂ capture rate, Comput. Chem. Eng. 83 (2015) 48–57.
[50] S. Yang, L. Zhang, N. Xie, Z.H. Gu, Z.Q. Liu, Thermodynamic analysis of a semi-lean solution process for energy saving via rectisol wash technology, Energy 226 (2021) 120402.
[51] S. Yang, Y. Qian, S.Y. Yang, Development of a full CO₂ capture process based on the rectisol wash technology, Ind. Eng. Chem. Res. 55 (21) (2016) 6186–6193.

Integrated vacuum pressure swing adsorption and Rectisol process for CO₂ capture from underground coal gasification syngas

Integrated vacuum pressure swing adsorption and Rectisol process for CO₂ capture from underground coal gasification syngas

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	Xingzhong Li, Kunlin Yu, Zibo He, Bo Liu, Rongfei Zhou, Weihong Xing. Improved SSZ-13 thin membranes fabricated by seeded-gel approach for efficient CO₂ capture [J]. Chinese Journal of Chemical Engineering, 2023, 56(4): 273-280.
[2]	Zhong Ma, Guofu Liu, Hui Zhang, Yonggang Lu. Investigation of the redox performance of pyrite cinder calcined at different temperature in chemical looping combustion [J]. Chinese Journal of Chemical Engineering, 2022, 48(8): 98-105.
[3]	Ding-Ming Xue, Wen-Juan Zhang, Xiao-Qin Liu, Shi-Chao Qi, Lin-Bing Sun. Fabrication of azobenzene-functionalized porous polymers for selective CO₂ capture [J]. Chinese Journal of Chemical Engineering, 2022, 43(3): 24-30.
[4]	Xiaobin Chen, Yuting Tang, Chuncheng Ke, Chaoyue Zhang, Sichun Ding, Xiaoqian Ma. CO₂ capture by double metal modified CaO-based sorbents from pyrolysis gases [J]. Chinese Journal of Chemical Engineering, 2022, 43(3): 40-49.
[5]	Wanqiao Liang, Jihuan Huang, Penny Xiao, Ranjeet Singh, Jining Guo, Leila Dehdari, Gang Kevin Li. Amine-immobilized HY zeolite for CO₂ capture from hot flue gas [J]. Chinese Journal of Chemical Engineering, 2022, 43(3): 335-342.
[6]	Xiuxin Yu, Bing Liu, Yuanhui Shen, Donghui Zhang. Design and experiment of high-productivity two-stage vacuum pressure swing adsorption process for carbon capturing from dry flue gas [J]. Chinese Journal of Chemical Engineering, 2022, 43(3): 378-391.
[7]	Xionghui Liu, Jianfeng Du, Yu Ye, Yuchuan Liu, Shun Wang, Xianyu Meng, Xiaowei Song, Zhiqiang Liang, Wenfu Yan. Boosting selective C₂H₂/CH₄, C₂H₄/CH₄ and CO₂/CH₄ adsorption performance via 1,2,3-triazole functionalized triazine-based porous organic polymers [J]. Chinese Journal of Chemical Engineering, 2022, 42(2): 64-72.
[8]	Jiajia Wang, Lizhi Wang, You Wang, Du Zhang, Qin Xiao, Jianhan Huang, You-Nian Liu. Recent progress in porous organic polymers and their application for CO₂ capture [J]. Chinese Journal of Chemical Engineering, 2022, 42(2): 91-103.
[9]	Peng Tan, Yao Jiang, Qiurong Wu, Chen Gu, Shichao Qi, Qiang Zhang, Xiaoqin Liu, Linbing Sun. Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO₂ capture [J]. Chinese Journal of Chemical Engineering, 2022, 42(2): 104-111.
[10]	Baowen Wang, Zhongyuan Cai, Heyu Li, Yanchen Liang, Tao Jiang, Ning Ding, Haibo Zhao. Reaction characteristics investigation of CeO₂-enhanced CaSO₄ oxygen carrier with lignite [J]. Chinese Journal of Chemical Engineering, 2022, 42(2): 319-328.
[11]	Tao Jiang, Fei Xiao, Yujun Zhao, Shengping Wang, Xinbin Ma. High-temperature CO₂ sorbents with citrate and stearate intercalated Ca—Al hydrotalcite-like as precursor [J]. Chinese Journal of Chemical Engineering, 2022, 50(10): 177-184.
[12]	Yu Dong, Tiantian Ping, Shufeng Shen. Solubility of CO₂ in nonaqueous system of 2-(butylamino)ethanol with 2-butoxyethanol: Experimental data and model representation [J]. Chinese Journal of Chemical Engineering, 2022, 41(1): 441-448.
[13]	Wan Zhang, Yingjie Li, Yuqi Qian, Boyu Li, Jianli Zhao, Zeyan Wang. NO removal performance of CO in carbonation stage of calcium looping for CO₂ capture [J]. Chinese Journal of Chemical Engineering, 2021, 37(9): 30-38.
[14]	Cao Kuang, Shuzhong Wang, Ming Luo, Jun Zhao. Reactivity study and kinetic evaluation of CuO-based oxygen carriers modified by three different ores in chemical looping with oxygen uncoupling (CLOU) process [J]. Chinese Journal of Chemical Engineering, 2021, 37(9): 54-63.
[15]	Chunxiao Zhang, Yingjie Li, Zhiguo Bian, Wan Zhang, Zeyan Wang. Simultaneous CO₂ capture and thermochemical heat storage by modified carbide slag in coupled calcium looping and CaO/Ca(OH)₂ cycles [J]. Chinese Journal of Chemical Engineering, 2021, 36(8): 76-85.