Fluid Catalytic Crackers


Installations worldwide

500 TPH


165 KG/CM2(G)

Outlet pressure


Outlet temperature

flue gas cooler in a fluid catalytic cracking unit at a refinery in india
Thermax offers waste heat recovery boiler (WHRB) also known as Flue Gas Coolers (FGC) for fluid catalytic cracking unit (FCCU). Its FCCU WHRB boilers can be designed to handle large gas flows in excess of 500,000 Nm3/Hr of catalytic dust-containing flue gas at temperatures in excess of 700oC. The FCCU WHRB unit designed and supplied for Reliance Industries Ltd. (India) for the Jamnagar refinery complex, is one of the world's largest installation.

The two technological options available for FCCU WHRB are:
  • directly downstream of FCCU and
  • CO' gas boiler downstream of FCCU.

Product Features

  • Designed to handle carry-over catalytic dust
  • Natural circulation design with complete membrane panel construction to take care of sulphur dew point constraint
  • Fully drainable superheater design; co-current and drainable economiser design
  • Soot blowers at suitable locations to counter effect of dust-laden gases
  • Vibration arrestors help prevent tube vibration and resultant failures

Operating Range

  • Capacities: Up to 400 TPH
  • Pressure: Up to 110 kg/cm sq(g)
  • Temperature: Up to 540ºC

Major Clients

  • Reliance Industries Ltd.
  • Indian Oil Corp. Ltd.
  • Hindustan Petroleum Corp. Ltd.
  • Foster Wheeler A/c Samref, Saudi Arabia
  • MRPL, Mangalore
  • GGSRL, Bhatinda