Page 530 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer
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9
Dry Gas Seal Best Practices
Introduction
Dry gas seals were introduced in the late 1960s but however, that a properly specified, selected and
did not gain wide acceptance until 20 years later as designed dry gas seal system will positively prevent
the ultimate solution to compressor seal oil system the ingress of oil into the process system and deliver
problems. The dry gas seal was marketed as high degrees of safety and reliability.
a ‘simple’ solution to seal oil system reliability issues, This chapter will therefore present the best prac-
but in reality, when one considers all the possible tices used since the mid-1980s for developing and
process and operational related issues, its complexity selecting DGS systems of the highest degree of
rivals that of the oil systems. There is no doubt, safety and reliability.
Copyright Ó 2011, W E Forsthoffer. Published by Elsevier Ltd. All rights reserved
