Enrichment of CO from syngas with Cu(I)Y adsorbent by five-bed VPSA

Abstract

Cu(I)Y adsorbent was prepared by reduction of Cu(II)Y which was prepared by ion exchange between the NaY zeolite and a solution of Cu(II) chloride. The dynamic adsorption capacity of Cu(I)Y for CO was calculated by adsorption breakthrough curve measured on a fixed bed at 30°C and 0.006 MPa (g) of CO partial pressure. The calculated CO adsorption capacity was 2.14 mmol/g, 37.5 times as much as that of NaY zeolite. The adsorption breakthrough curve experiment was also simulated with Aspen Adsorption software and the results were approximately consistent with experimental results. Then a five-bed VPSA process for separating CO from syngas on this adsorbent was dynamically simulated with Aspen Adsorption software with the adsorption pressure of 0.68 MPa (g) and the desorption pressure of -0.075 MPa (g). The results showed that CO was enriched from 32.3% to 95.16%–98.12%, and its recovery was 88.47%–99.44%.

Key words： Cu(I)Y adsorbent; breakthrough curve; desorption; VPSA; simulation

References

1 Song A D, Feng X J, Xie H. Comparative analysis on two technologies of ethanol production from syngas. Chinese Journal of Bioprocess Engineering, 2012, 10(5): 72-77 (in Chinese)

2 Geng C X. Technology of pressure swing adsorption sepatating CO and its application in industry of carbonyl synthesis. Shanxi Chemical Industry, 2006, 26(3): 49-52 (in Chinese)

3 Liu B W. New application of gas separation technology by PSA. Northern Environmental, 2011, 23(5): 174-174 (in Chinese)

4 Wang L F, Li P F, Huang Z T. A new method for separation and purification of synthesis. Guangzhou Chemical Industry, 1993, 21(1): 34-39 (in Chinese)

5 Qian L M, Bai M M. Xiaye H Z. The preparation of adsorbent for separating and recover CO. <patent>88108498.0</patent>, China, 1989, 1-14

6 Zhang W S, Dai W. Research on new methanation Catalyst. Petrochemical Engineering, 2005, 34: 115-116 (in Chinese)

7 Kyle P K, Phillip C W. Separation of dilute binary gases by simulated-moving bed with pressure-swing assist: SMB/PSA processes. Industrial & Engineering Chemistry Research, 2008, 47(9): 3138-3149

8 Kyle P K, Phillip C W. Separation of concentrated binary gases by hybrid pressure-swing adsorption/simulated-moving bed processes. Industrial & Engineering Chemistry Research, 2009, 48(9): 4445-4465

9 Phillip C W, Kyle P K. Hybrid air separation processes for production of oxygen and nitrogen separation. Separation Science and Technology, 2010, 45: 1171-1185

10 Hideki M, Akio K. Imoproved purge step in pressure swing adsorption for CO purification. Adsorption, 2005, 23(11): 625-630

11 DiMartino S P, Glazer J L, Houston C D, Schott M E. Hydrogen/carbon monoxide separation with cellulose acetate membranes. Gas Separation & Purification, 1988, 2(3): 120-125

12 Frank G W. Basics and industrial applications of pressure swing adsorption (PSA), the modern way to separate gas. Gas Separation & Purification, 1988, 2(3): 115-119

13 Yang S I, Choi D Y, Jang S C, Kim S H, Choi D K. Hydrogen separation by multi-bed pressure swing adsorption of synthesis gas. Adsorption, 2008, 14(4-5): 583-590

14 Ju S G, Liu X Q, Ma Z F. Advances in removing of small amount of carbon monoxide from gas mixture containing nitrogen by complexing adsorption. Natural Gas Chemical Industry, 2000, 25(6): 38-45 (in Chinese)

15 Zhu L Q, Tu J L. Adsorption of CO by active carbon-supported cupric chloride. Journal of Fuel Chemistry and Technology, 1989, 17(8): 284-288

16 Ulrich K K. USPatent, <patent>3497462</patent>, 1970

17 Huang Y Y. Selective adsorption of carbon monoxide and complex formation of cuprous-ammines in Cu(I)Y zeolites. Catal, 1973, 30(2): 187-194

18 Pramathesh R M, Arun S M. High recovery cycles for gas separations by pressure-swing adsorption. Adsorption, 2012, 18: 275-295

19 Filipe V S L, Carlos A G, Alirio E R. Activated carbon for hydrogen purification by pressure swing adsorption: Multicomponent breakthrough curves and PSA performance. Chemical Engineering Science, 2011, 66(3): 303-317

20 Jule A R, James N F, Charles L A U S. Patent, <patent>4019879</patent>, 1977

21 Sliva J A C, Rodrigues A E. Sorption and diffusion of n-pentane adsorption in pellets of 5A zeolite. Industrial & Engineering Chemistry Research, 1997, 36(2): 493-500

22 Liu Z, Carlos A G, Li P. Multi-bed vacuum pressure swing adsorption for carbon dioxide capture from flue gas. Separation and Purification Technology, 2011, 81(3): 307-317

23 Wang S H. Petrochemical Design Handbook. Beijing: Chemical Industry Press, 2002, Vol. 3 (in Chinese)

24 Do D D. Adsorption analysis: Equilibria and kinetics. London: Imperial College Press, 1984

25 Chou C T, Huang W C. Simulation of a four bed pressure swing adsorption process for oxygen enrichment. Industrial & Engineering Chemistry Research, 1994, 33(5): 1250-1258

26 Shen C Z, Liu Z, Li P, Yu J. Two-stage VPSA process for CO₂ capture from flue gas using activated carbon beads. Industrial & Engineering Chemistry Research, 2012, 51(13): 5011-5021

27 Kyle P K, Phillip C W. High recovery cycles for gas separations by pressure swing adsorption. Industrial & Engineering Chemistry Research, 2006, 45(24): 8117-8133

28 Kupiec K, Rakoczy J, Lalik E. Modeling of PSA separation process including friction pressure drop in adsorbent bed. Chemical Engineering and Processing, 2009, 48(7): 1199-1211

29 Rao V R, Farooq S, Krantz W B. Design of a two-step pulsed pressure swing adsorption based oxygen concentrator. AIChE, 2010, 56(2): 357-370

30 Yang R T. Gas Separation by Adsorption Process. Boston: Butterworths, 1987, 50-101

31 Olajossy A, Gawdzik A, Budner Z, Dula J. Methane separation from coal mine methane gas by vacuum pressure swing adsorption. Institution of Chemical Engineers, 2003, 4(81): 474-482

32 Mishra P, Edubilli S, Mandal B, Gumma S. Adsorption of CO₂, CO, CH₄ and N₂ on DABCO based metal organic frameworks. Microporous and Mesoporous Materials, 2013, 169: 75-80

33 Ruthven D M, Xu Z, Farooq S. Sorption kinetics in PSA systems. Gas Separation & Purification, 1993, 7(2): 75-81

34 Valenzuela D P, Mayers A L. Adsorption Equilibrium Data Handbook. New Jersey: Prentice Hall, 1989, 1-2

35 Kupiec K, Rakoczy J, Lalik E. Modeling of PSA separation process including friction pressure drop in adsorbent bed. Chemical Engineering and Processing: Process Intensification, 2009, 48(7): 1199-1211