DHX Coal Fired CFB Hot Water Boiler

DHX coal-fired CFB (circulating fluidized bed) hot water boiler

Product thermal capacity: 58-116 MW

Working pressure:1.25-1.6 MPA

Available fuel: Coal, gangue, biomass, waste, sludge

Available industries: Centralized heating



Coal Fired CFB Hot Water Boiler Introduction

This series of boilers are mainly composed of furnace, cyclone separator, return valve and rear convection flue. The furnace is equipped with membrane water-cooling wall, the middle part of the boiler is cyclone separator, and the tail shaft flue is arranged with energy saving device, and the lower part of energy saving device is arranged with air preheater.

The combustion equipment mainly includes coal feeding device, air distributing device, slag discharging device, secondary air device and ignition system.

The boiler is suitable for indoor and semi – open layout. Using CFB combustion technology, the separated flue gas passes through the steering chamber, the high temperature energy saver, low temperature energy saver and the first and second air preheater are discharged by the tail flue.


DHX Coal Fired Hot Water Boiler Characteristics

High temperature cyclone separator

High efficiency, wear resistance, separation efficiency ≥ 98%, effectively improve the combustion efficiency of the boiler thermal efficiency.


Large furnace design

  1. Large furnace, low velocity design; the application of wearproof tube technology, reducing erosive abrasion;
  2. Extend the residence time of coal particles in the furnace so that the coal can be fully burned.


Bell jar type hood

Adopt bell type hood to distribute air averagely and avoid fuel reverse to wind chamber.


Low bed pressure operation

By particle optimization, the operating bed pressure can be decreased to 3500 Pa, which effectively saves operating costs and greatly reduces the oxynitride generated.


Coal Fired CFB Hot Water Boiler Specification

Model Rated thermal power(MW) Rated working pressure(MPa) Rated output water(℃) Rated imported water temperature(℃)
QXX58-1.25/130/70-AⅡ 58 1.25 130 70
QXX70-1.6/150/90-AⅡ 70 1.6 150 90
QXX91-1.6/150/90-AⅡ 91 1.6 150 90
QXX116-1.6/150/90-AⅡ 116 1.6 150 90


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