Case Study

H-13 Live-loading Disc Springs Applied in Residue Hydrotreating Device, Refinery Plant, China

Date: July 22, 2015
Equipment: Residue Hydrotreating Reactor
Working Temp.: 390 C degree
Working Pressure: 178bar
Medium: mixed with residue oil, wax oil, diesel, gasoline, H2S, hydrogen and so on.
Gasket: Ring Joint Gasket
Bolt Size: M95

Fishbone Gasket
Liquefied Natural Gas
Liquefied Natural Gas Terminal

Equipment: Head of HP Barrel Pump
Temperature: Cycling between -56C to -196C
Service Pressure: 6 Bar
Test Pressure: 19 Bar
Gasket Dimension: 1060mm x1120mm x 4.5mm
Bolting: 36 @M27 bolts
Problem: Continuous gasket leakage problem during operation

Barrel Pump Cover

Fishbone Gasket

Type: Basic
Material: 316/ PTFE
Torque Applied: 480 N-m
Installed: September 2016
Operation: No Leaks for over 16 months

H-13 Live-loading Disc Springs were installed in every flange joints of the reactor in early March. No leakage till now .

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