Optimal designing of cracking tower for waste tires based on heat and mass transfer model (Ⅰ)Model development
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Optimal designing of cracking tower for waste tires based on heat and mass transfer model (Ⅰ)Model development
CIESC JournalIssue 7, Pages: 1525-1531(2006)
作者机构:
浙江大学化学工程与生物工程学系,浙江,杭州,310027
作者简介:
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DOI:
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Online First:25 July 2006,
Published:25 July 2006
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LIU Baoqing, JIANG Jialing. Optimal designing of cracking tower for waste tires based on heat and mass transfer model (Ⅰ)Model development[J]. CIESC Journal, 2006, (7): 1525-1531.
DOI:
LIU Baoqing, JIANG Jialing. Optimal designing of cracking tower for waste tires based on heat and mass transfer model (Ⅰ)Model development[J]. CIESC Journal, 2006, (7): 1525-1531.DOI:
Optimal designing of cracking tower for waste tires based on heat and mass transfer model (Ⅰ)Model development
A new vertical cracking tower with multiple hollow disks was developed
which could pyrolyze waste tires into carbon black
liquid oil and fuel gas.Based on the assumptions of annular granular heap
constant angle of repose and uniform physical properties
a mass transfer model in the cracking tower for waste tires was presented.The equations for calculating several important parameters
such as height and volume of each granular heap
retention time
effective covering ratio
critical capacity were provided along with the new mass transfer model.According to the penetration model of particle heat transfer and kinetic model of tire pyrolysis
the exit temperature and rubber remnant content in granular heaps were effectively predicted by a straightforward stepwise calculation procedure
and the maximum pyrolysis capacity was predicted as well.The theoretical results predicted with the heat and mass transfer model were in satisfactory agreement with experimental data from a 3000 t8226;a-1 pilot-plant.