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Industrial Package Watertube Boiler

"D" Type

  • Rectangular furnace
  • Capacities from 10,000 lb/hr to 200,000 lb/hr
  • Saturated and/or Superheated Steam
  • Design pressures up to 1200 psig
  • Superheated steam temperatures up to 900°F
  • Gas outlet left or right side at front
  • Suitable for gas, oil, or waste fuel firing

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The "D" type design watertube boiler has allowed English Boiler to offer attractive pricing programs without sacrificing quality construction, efficiency, guaranteed emissions, and on time delivery.

The "D" design boiler is made up of five major components. The components are the Structural Steel Base and Lower Water Drum, the Front Wall, the Rear Wall, and the Upper Steam Drum. These components provide the structural integrity of the boiler. Each component is designed to expand independent of the other components. The membrane wall tubes in conjunction with the corner expansion joints allow for the independent expansion. Regardless of its capacity, each boiler is constructed in much the same manner.

This concept allows English Boiler to custom design each and every unit without incurring extra engineering charges. Any boiler can be changed in height, width, and length without penalizing the customer. Each English boiler is designed to meet and exceed the customer requirements. English boilers usually have more heating surface for the same size and capacity than that provided by other boiler manufacturers.

The English "D" boiler is designed around the premise that the maximum heat release in the furnace should not exceed 85,000 (Btu/Hr/CuFt). At the same time the maximum exit gas temperature (before the economizer) should not exceed 200°F above the saturation temperature of the steam at the corresponding operating pressure.