|Table of Contents|

Numerical Simulation on Gas-solid Flow Characteristics of a CFB-FGD Bag-Filter(PDF)

南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2014年01期
Page:
29-34
Research Field:
Publishing date:

Info

Title:
Numerical Simulation on Gas-solid Flow Characteristics of a CFB-FGD Bag-Filter
Author(s):
Liu Ling1Lu Ping1Huang Zhen2
(1.School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210042,China) (2.Nanjing Longrow Environmental Engineering Co.Ltd.,Nanjing 210009,China)
Keywords:
CFB-FGDbag-filterflue gas distributornumerical simulation
PACS:
TK09; X701.2
DOI:
-
Abstract:
Based on the k-ε two-equation turbulence model and discrete phase model(DPM),the numerical simulation of the gas-solid two-phase flow characteristics of original and modified bag-filters for circulating fluidized bed flue gas desulphurization(CFB-FGD)is carried out.The effects of flue gas duct structure,flue gas distributor and boiler load on flow filed distribution,resistance properties,particle flow trajectory of original and modified bag-filters are analyzed.Simulation results indicate that the uniformity of flow field distribution in the bag-filter can be improved by diverging inlet flue gas duct and flue gas distributor with a certain opening ratio.The particle flow in modified bag-filter is more uniform than that in original bag-filter,and fly ash deposition in the hopper can enhance the particle distribution in the modified bag-filter.The resistance loss of modified bag-filter and the boiler load meet the needs of quadratic function under no ash deposition in the surface of filter bag.

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Last Update: 2014-03-31