Dry Gas Seal In The Application Of Ethylene Compressor EC-341

EC-341 old units Daqing ethylene compressor is one of the early 1970s, the introduction of foreign technology ethylene cracker built in three heart. These old devices in driving China’s economic construction and promote the development of China’s chemical levels of oil has played a key role. With the continuous improvement of the upgrade process technology, these old devices modernization of the national economy still plays an important role. Ethylene cracker in any one heart device problems, will have a direct impact on the economic benefits the company. To make the old unit EC-341 safe and stable long-term operation, the unit dry gas seal shaft seal is the most effective means of transformation.Based on the original floating ring mechanical seal defect analysis, structural analysis of the old crew, made change to the original seal dry gas seal. Through the dry gas seal structure characteristics and unit process analysis to determine the choice of the transformation of dry gas seal structure type and dry gas seal control system configuration. After the technical demonstration of dry gas seal manufacturers, carefully designed selection, strict careful construction, the old unit successfully completed the transformation of dry gas seals, not only solved the old unit sealed limiting device capacity and long-term operation of the problem, but also for other old unit dry gas seal transformation has accumulated a wealth of experience, and also bring huge economic and social benefits.