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化学工业与工程
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��ѧ��ҵ�빤�� 2000, Vol. 17 Issue (4) :222-225    DOI:
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The Simulated Calculation for Diffusion Process in Gas Detector
NING Ying nan,ZHANG Hai yan,WANG Bao hui (Department of Petrochemical Engineering,Daqing Petroleum Institute,Heilongjiang Anda,151400,China)
(Department of Petrochemical Engineering,Daqing Petroleum Institute,Heilongjiang Anda,151400,China

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Abstract�� Concentration distribution expression of gas diffusion, reaction process at limited distance in small diameter pipe containing solids, the relation of gas concentration,diffusion time and diffusion distance have been derived by the second Fick's low.In the certain diffusion time the relation of gas concentration and diffusion depth is parabolic.The ratio of the square of certain concentration gas diffusion depth and diffusion time is constant when it diffuses and reacts through the solids bed.The theoretical analysis is in accordance with experimental results.
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Received 2000-07-15; published 2000-07-15
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��Ӣ��,�ź���,������.������������ɢ���̵�ģ�����[J].  ��ѧ��ҵ�빤��, 2000,17(4): 222-225
NING Ying nan,ZHANG Hai yan,WANG Bao hui .The Simulated Calculation for Diffusion Process in Gas Detector[J].  Chemcial Industry and Engineering, 2000,17(4): 222-225
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