方案八

　　What

　　Seal flush from internal pumping device through cooler .

　　Standard flush plan in hot water services ..

　　Why

　　Efficient seal cooling with low cooler duty .

　　Increase fluid vapor margin .

　　Improve water lubricity

　　Where

　　High temperature service ,hot hydrocarbons

　　Boiler feed water and hot water over 80C (180F)

　　Clean ,non-polymerizing fluids

　　Preventative Maintenance

　　Seal cooler and piping must have air vents at highest

　　elevation - ventbefore starting .When using 682 Seal Cooler

　　pipe with parallel flow to minimize head loss

　　Seal chamber requires close clearance throat bushing to

　　isolate process fluid .Tangential seal gland taps should enter

　　at bottom and exit at top .Regularly monitor cooler inlet and

　　outlet temperatures for signs of clogging or fouling

　　Process fluids with iron should flow through magnetic

　　separator before cooler