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CASE STUDY

PROCESS HEATER

SINGAPORE

PROCESS HEATER

Crude Distillation Unit
Problem

Fouled furnace.

After Therma-Chem Treatment

Therma-Chem FS12 cleaned the fouled heater tubes online and maintained the cleanliness throughout the run. IR Scan Images indicate that the tubeskin temperatures for the bottom and mid-section were c.5O°C lower after three months of chemical injection.

The temperatures in the top section of the heater were also lower as indicated by the shift in temperature scale (circled).

Radiant temperature constraint was eliminated and heater duty limitation partly relieved. Furthermore, there were also no plugging issues with the Air Pre-Heater or the ID Fan.

Ultimately, the use of Therma-Chem FS12 resulted in a projected improvement of 0.3 EII points for the refinery.

Top section tubeskin temperatures
pheater mid1 - PROCESS HEATER
pheater mid2 - PROCESS HEATER
Bottom and midskin temperatures
pheater mid3 - PROCESS HEATER
pheater mid4 - PROCESS HEATER
left top1 icon 1 - PROCESS HEATER

Vacuum Tar Residue
and Fuel Gas Fired Boiler

Japan

High flue gas temperatures
and APH corrosion

left top1 icon 1 - PROCESS HEATER

HFO Fired Boiler

Saudi Arabia

Poor boiler efficiency and high
CO2 emissions

left top1 icon 1 - PROCESS HEATER

Coal Fired Boiler

Romania

Loss of boiler efficiency and
high CO2 emissions

left top1 icon 1 - PROCESS HEATER

Gas and HFO
Fired Boilers

Egypt

Efficiency loss due to fouling on
superheaters and economiser

mid1 right icon - PROCESS HEATER

Expander in FCC Unit

South Korea

Catalyst deposits on rotating
blades causing severe vibration

bot1 left icon - PROCESS HEATER

Shipping – LNG Tanker

Malaysia

Heavy deposits on combustion
and radiant sections of boilers
as well as back-end corrosion

right top icon - PROCESS HEATER

Process Heater

Belgium

Heater temperature limited
due to fireside conditions

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Process Heater

Singapore

Radiant temperature and
heater duty limited by fouling

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Gas Fired Reformer

UK

Unsustainable flue gas
temperature increase
due to fouling