Products

Industrial Package Watertube Boiler

"D" Type" / "DS" Design***

• High Efficiency
• Square furnace
• Capacities from 10,000 lb/hr to 250,000 lb/hr
• Saturated and/or Superheated Steam
• Design pressures up to 1200 psig @900°F
• Even Weight Distribution
• Gas outlet at top; right or left side at front
• Suitable for gas or oil firing
• Smaller Physical Dimensions
• Symmetrical horizontal and vertical center lines
• Burn Multiple Fuels Simultaneously

English Boiler has developed a patented product line of boilers called the "Ds" Design. The distinguishing characteristic of this boiler is the location of the upper steam drum in relation to the lower water drum. Unlike the conventional "DR" type where both drums are vertically aligned over top of each other, in the "Ds" design boiler the water drum is located in one lower corner and the steam drum is located in the opposite upper corner. The furnace is relatively square and the shape factor (h vs w) is usually 1:1.

The advantage of the "Ds" design boiler is to optimize the heat release in the furnace without jeopardizing the natural circulation. In comparison to the "DR" type boiler, the "Ds" design boiler has higher radiant and furnace heat release rates, equal to or greater total heating surface; all within a shorter and/or narrower footprint. Decreasing the length of the boiler does not sacrifice efficiency, but significantly reduces the cost over the conventional "DR" type boiler. Presently, English Boiler manufactures "Ds" design boilers from 10,000 pph to 250,000 pph and pressures up to 1200 psig @900°F.

The "Ds" design boiler is now in use throughout the United States, Canada, Mexico and Europe.