A model on chemical looping combustion of methane in a bubbling fluidized-bed process

Jeong-Hoo Choi; Pil Sang Youn; Djamila Brahimi; Young-Wook Jeon; Sang Done Kim; Ho-Jung Ryu

Korean Journal of Chemical Engineering, Vol.29, No.6, 737-742, June, 2012

DOI10.1007/s11814-011-0238-7 Export Citation

A model on chemical looping combustion of methane in a bubbling fluidized-bed process

Jeong-Hoo Choi^†, Pil Sang Youn, Djamila Brahimi, Young-Wook Jeon¹, Sang Done Kim², and Ho-Jung Ryu³

Department of Chemical Engineering, Konkuk University, Seoul 143-701, Korea
¹SK Innovation, Daejeon 305-712, Korea
²Department of Chemical & Biomolecular Engineering and Energy & Environment Research Center, KAIST, Daejeon 305-701, Korea
³Korea Institute of Energy Research, Daejeon 305-343, Korea

E-mail:

We developed a mathematical model to discuss the performance of chemical looping combustion (CLC) of methane in continuous bubbling fluidized-beds. The model considers the particle population balance, oxidation and reduction rate of particles in fluidized beds. It also considers utilization efficiency of oxygen carrier (OC) particles, residence time of particles in each reactor, and particle size in reaction rate. The model was applied for a bubbling coreannulus fluidized-bed process. The core bed was the fuel reactor (0.08 m-i.d., 2.1 m-height) and the annulus bed was the air reactor (0.089 m-i.d., 0.15 m-o.d., 1.6 m-height). The process employed a type of Ni-based OC particles. The present model agrees reasonably well with the combustion efficiency measured in the process. Simulation was performed to investigate the effects of some variables for the process. The present model revealed that the range of circulation rate of OC particles for achieving complete combustion determined the operating range of the CLC system. The minimum circulation rate of OC particles for complete combustion decreased in the considered operating range as temperature or bed mass increased in the fuel reactor. A large mass of the fuel bed was necessary to obtain complete combustion at low fuel reactor temperature. The fresh feed rate of OC particles for steady state operation increased in complete combustion condition as temperature or static bed height or gas velocity increased.

Keywords:Model;Chemical Looping Combustion;CLC;Fluidized Bed;Methane

[References]

Balaji S, Ilic J, Ydstie BE, Krogh BH, Ind. Eng. Chem. Res., 49(10), 4566 (2010)
Deng ZY, Xiao R, Jin BS, Song QL, Huang H, Chem. Eng. Technol., 31(12), 1754 (2008)
Jung JW, Gamwo IK, Powder Technol., 183(3), 401 (2008)
Abad A, Adanez J, Garcia-Labiano F, de Diego LF, Gayan P, Energy Procedia., 1, 391 (2009)
Abad A, Adanez J, Garcia-Labiano F, de Diego LF, Gayan P, Combust. Flame, 157(3), 602 (2010)
Bolhar-Nordenkampf J, Proll T, Kolbitsch P, Hofbauer H, Chem. Eng. Technol., 32(3), 410 (2009)
Deng Z, Xiao R, Jin B, Song Q, Int. J. Greenhouse Gas Control., 3, 368 (2009)
Kolbitsch P, Proll T, Hofbauer H, Chem. Eng. Sci., 64(1), 99 (2009)
Iliuta I, Tahoces R, Patience GS, Rifflart S, Luck F, AIChE J., 56(4), 1063 (2010)
Kruggel-Emden H, Rickelt S, Stepanek F, Munjiza A, Chem. Eng. Sci., 65(16), 4732 (2010)
Lapple CE, Chem. Eng., 58, 144 (1951)
Kunii D, Levenspiel O, Fluidization engineering, 2nd Eds., Butterworth-Heinemann, Boston, U.S.A. (1991)
Choi JH, Yi CK, Jo SH, Korean J. Chem. Eng., 28(4), 1144 (2011)
Merrick D, Highley J, AIChE Symp. Ser., 70, 366 (1974)
Werther J, Reppenhagen J, AIChE J., 45(9), 2001 (1999)
Wen CY, Yu YH, AIChE J., 12, 610 (1966)
Ryu HJ, Yoon PS, Choi JH, in Abstracts for 2010 Korea institute of chemical engineering fall meeting, 275 (2010)
Jeon YW, Hydrodynamic and oxidation-reduction reaction characteristics of oxygen carrier particles in an annular type chemical looping combustor, Master Thesis, Korea Advanced Institute of Science and Technology, Daejeon, Korea (2010)

[Referenced By]

[Related Articles]

[1] Balaji S, Ilic J, Ydstie BE, Krogh BH, Ind. Eng. Chem. Res., 49(10), 4566 (2010)

[2] Deng ZY, Xiao R, Jin BS, Song QL, Huang H, Chem. Eng. Technol., 31(12), 1754 (2008)

[3] Jung JW, Gamwo IK, Powder Technol., 183(3), 401 (2008)

[4] Abad A, Adanez J, Garcia-Labiano F, de Diego LF, Gayan P, Energy Procedia., 1, 391 (2009)

[5] Abad A, Adanez J, Garcia-Labiano F, de Diego LF, Gayan P, Combust. Flame, 157(3), 602 (2010)

[6] Bolhar-Nordenkampf J, Proll T, Kolbitsch P, Hofbauer H, Chem. Eng. Technol., 32(3), 410 (2009)

[7] Deng Z, Xiao R, Jin B, Song Q, Int. J. Greenhouse Gas Control., 3, 368 (2009)

[8] Kolbitsch P, Proll T, Hofbauer H, Chem. Eng. Sci., 64(1), 99 (2009)

[9] Iliuta I, Tahoces R, Patience GS, Rifflart S, Luck F, AIChE J., 56(4), 1063 (2010)

[10] Kruggel-Emden H, Rickelt S, Stepanek F, Munjiza A, Chem. Eng. Sci., 65(16), 4732 (2010)

[11] Lapple CE, Chem. Eng., 58, 144 (1951)

[12] Kunii D, Levenspiel O, Fluidization engineering, 2nd Eds., Butterworth-Heinemann, Boston, U.S.A. (1991)

[13] Choi JH, Yi CK, Jo SH, Korean J. Chem. Eng., 28(4), 1144 (2011)

[14] Merrick D, Highley J, AIChE Symp. Ser., 70, 366 (1974)

[15] Werther J, Reppenhagen J, AIChE J., 45(9), 2001 (1999)

[16] Wen CY, Yu YH, AIChE J., 12, 610 (1966)

[17] Ryu HJ, Yoon PS, Choi JH, in Abstracts for 2010 Korea institute of chemical engineering fall meeting, 275 (2010)

[18] Jeon YW, Hydrodynamic and oxidation-reduction reaction characteristics of oxygen carrier particles in an annular type chemical looping combustor, Master Thesis, Korea Advanced Institute of Science and Technology, Daejeon, Korea (2010)