Abstract

Pumps in flue gas desulphurization plants require reliable seals in order to attain the necessary trouble-free working periods. This paper reviews and describes those systems which have been used to date. The general requirement of developing seals which allow a more profitable operation at a reduced investment, without impairing their service life, has led to the design of simple mechanical seals lubricated by the medium itself. This concept is described, together with the results of comprehensive trial runs at the manufacturers' works.

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