10/30/2026
4,545 km Overnight to Save a Critical Compressor | DECON™ A on an MHI Ethylene Refrigeration Compressor, China
A large ethylene complex in Northwest China had a critical MHI ethylene refrigeration compressor whose thrust bearing was running hot. This is how one emergency delivery kept it at full load, with no trip, shutdown or derate, during a high-margin period.
THE ASSET
A company-level critical unit, in service since 2002. It supplies ethylene refrigerant to the cracker at −101 °C (−150 °F), −75 °C (−103 °F) and −65 °C (−85 °F).
Machinery: MHI ethylene refrigeration compressor, driven by a steam turbine
Thrust bearing: six-pad Kingsbury tilting-pad, Cu/Cr alloy. Alarm at 120 °C (248 °F), trip at 125 °C (257 °F)
Fluid: Mobil DTE 846 (ISO VG 46), in a 10,000 L (2,640 gal) shared reservoir
THE PROBLEM
Thrust bearing T16809 rose 13 °C (23 °F) in two months. By June 30, 2025 it read 106 °C (223 °F), while the pad next to it read 79 °C (174 °F). The plant’s root cause analysis found varnish on the bearing surface was the direct cause.
THE FIRST TREATMENT
DECON™ A was first added on July 7. Within three days, every thrust bearing temperature was trending down.
THE SETBACK
Then a seal failed. The DECON A was lost along with the oil. 8,600 L (2,270 gal) of new oil went in, leaving at most about 1% DECON A in the system. By September 19, T16809 was reading 112 °C (234 °F), and the plant would not accept a shutdown or a cut in load.
THE SOLUTION
Lubricant cannot be air-freighted inside China, so Fluitec’s China distributor sent five drums overnight in a dedicated vehicle. Two drivers covered 4,545 km (2,825 mi) from East China to Northwest China in about 46 hours, without stopping.
At 01:00 on September 19, three drums went into the running compressor, an estimated treat rate of around 7%. DECON A dissolves varnish and holds it in solution, so cleaner pads share the load and run cooler.
THE RESULTS
✔ T16809 dropped from 112 °C to 108 °C (234 °F to 226 °F) straight after dosing
✔ It held at about 107 °C (225 °F) through November 5
✔ The compressor stayed at full load, with no trip, shutdown or derate
✔ The plant is budgeting for a further five drums of DECON A
VALUE DELIVERED*
More than 1,300% ROI from avoiding a single hour of shutdown
At least RMB 10 million (about USD 1.4 million) in lost production for each hour of unplanned shutdown
About USD 235 to 470 million of production at risk over a one to two week outage
Under USD 100,000 estimated cost of the September treatment, including the dedicated transport
Under 5 minutes of avoided downtime pays for the treatment
*Estimates only, based on the plant’s figures. USD at approximately RMB 7.1.
Find out more here:
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