Rentech - Cross Flow Two-Drum HRSG
Rentech’s cross flow HRSG is a compact design, engineered to fit in almost any footprint. These units can be provided in multiple gas flow configurations, adding to the design flexibility. Tube arrangements can be staggered or inline to maximize heat transfer and to minimize draft losses for maximum efficiency. Our cross flow boilers utilize a rigid carbon steel outer casing and internal insulation protected by a floating liner.
- Typical applications include turbine sizes from 2 to 35 MWe
- Steam capacities from 10,000 to 300,000+ lbs/hr (4,500 kg/hr to 137,000+ kg/hr)
- Saturated or superheated steam
- Pressures from 200 to 1,500+ PSI (14 bar to 105+ bar)
In situations with shipping constraints or high steam load fluctuations, the Rentech cross flow HRSG can be designed with an elevated steam drum. This modification allows for smaller shipping sections or for a much larger steam drum than would be practical to have integrated into the convection section.
If more steam flow is required than what can be produced via the turbine exhaust gas (TEG), the Rentech cross flow HRSG can be designed with supplemental firing from a duct burner. Rentech duct burners can fire a wide range of gaseous and liquid fuels. Some typical fuels fired in Rentech duct burners include:
- Natural Gas
- Hydrogen
- Low-Sulfur Diesel
- Bio-Diesel
- Landfill Gas
- Refinery Off Gasses
Rentech’s engineers can design a system that will allow the duct burner to be fired and the system to produce steam even when the turbine is offline. This operational mode is known as fresh air firing.Cross flow boilers with an integral firing transition can produce flue gas temperatures up to 1,600 degrees F. For applications that require higher firing temperatures, Rentech offers HRSGs with water cooled furnaces,
Rentech’s water cooled furnace design utilizes our membrane wall construction. This proven design concept can be applied to both saturated and superheated steam applications. All superheater designs are convective type allowing for easier and more reliable operation of your HRSG system.