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Abstract�� During the capability-enlarging modication of the crude benzol rectifiering in Shanxi Coking Co.,Ltd.,ability of 7 kt/a process is enlarged to 20 kt/a.The calculation shows that the original diameter of column can meet require of alteration,and float valve is replaced by vertical sieve-plate.Examination of comparison indicates that vertical sieveplate has characteristic of large capability and small resistance.

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Received 2006-03-15; published 2006-03-15

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��;��ΰ��;.��д�ֱɸ�弼��Ӧ��[J]. ��ѧ��ҵ�빤��, 2006,23(2): 176-177

LIU Gang,YUE Wei-ming.Application of Vetical Sieve-Plate Technique in Modifying Crude Benzol Rectifier[J]. Chemcial Industry and Engineering, 2006,23(2): 176-177