Rentech Boiler Systems INC. Package Boiler With Two John Zink Hamworthy Combustion ECOjet Burners #46368

Rentech Boiler Systems INC. Package Boiler, Steam 160,000 LBS/HR, 400 PSI, Natural Gas, With (2) John Zink Hamworthy Combustion ECOjet Burner, 225 MM BTU/HR

Two (2) 160,000 pounds per hour "D" type package boilers are to be supplied with a low NOx packaged burner that will fire natural gas.

2. BURNER DESIGN BASIS & SPECIFICATIONS

A. Burner Design Basis

Boiler Data

Manufacturer RBS

Type D

Design Steam Flow 160,000 lb/hr

Steam Pressure 418 psig (superheated)

Steam Temperature 730 deg F

Furnace Dimensions:

Depth 35.0 ft

Width 6.75 ft

Height 10.0 ft

Furnace Operating Pressure

including FGR at MCR 15.0 in wg (assumed)

Combustion Air Temperature 16 - 85 deg F

Flue Gas Temperature 300 deg F

Fuel Data

Fuel Gas

Type Natural

High Heat Value 1,022 Btu/scf

Pressure Available 75 psig

Pressure Required at JZHC/Coen interface 25 psig (regulated by others)

Analysis CH4 @ 90%; C2H6 @ 5%; N2 @ 5%

Burner Management System Design

Insurance Guidelines NFPA85 for single burner

Type of Operation Automatic, non-recycling

Miscellaneous Data

Burner Location Outdoors, non-hazardous

Plant Elevation 2,586 ft asl

Power Supply Available 120V/1Ph/60Hz

Instrument Air Available 70 psig

Valve Train Construction NFPA54 (gas)

Surface Preparation and Painting Manufacturer standard

Quality Control Manufacturer standard

B. Burner Specifications

Number of Burners per Boiler One (1)

Option 1 – 0.050 lb/mmbtu

Gas Firing per Burner

Heat Input 225 mmbtu/hr

Turndown 20 to 1

Excess Air at MCR 15%

Recycle Flue Gas Rate at MCR 7%

Draft Loss at MCR 9.25 in wg

Type ECOjet

C. Gas Electric Ignitor Specifications

Number of Ignitors per Boiler One (1)

Gas Firing

Heat Input 1 mmbtu/hr

Pressure at Burner 1 psig (approx)

Type Class 3