QXX circulating fluidized bed(CFB) hot water boiler is suitable for all kinds of coal. With the development of the economy and the improvement of the living standard, the demand for the central hot water heating has been gradually improved, and the hot water heating has been developed rapidly in China in the past ten years. The circulating fluidized bed hot water boiler has the advantages of wide adaptability, high combustion efficiency, low nitrogen oxide emission, low cost limestone furnace desulfurization, high load adaptability and flammable inferior fuel.
The structure of QXX circulating fluidized bed hot water boiler is simple and compact, and the boiler is composed of combustion equipment, coal feeding device, water cooling system, separator, coal economizer, air preheater, steel frame, escalator and furnace wall, and the whole steel frame structure is adopted. The furnace is arranged before the furnace. The air required for combustion is provided by one or two air blower. A large number of smoke produced by the combustion of fuel in the furnace is carried. The gas and material are separated by the separator. The separated materials are returned to the furnace to reburn through the return feeder.
The QXX circulating fluidized bed hot water boiler is arranged in order of combustor, separator and tail flue to ensure good sealing performance. The high temperature zone adopts a full film wall seal structure, full suspension type, fixed expansion center, aggregate leg and furnace wall water wall composite expansion, improve operation reliability and reduce heat loss. The temperature in the bed can be adjusted conveniently by adjusting the coal supply, primary air and the two air volume and their proportioning, and the stock of the bed.
| Boiler Model | Rated Thermal Power(MW) | Rated Working Pressure(MPa) | Rated Outlet Water Temperature (℃) | Rated Intake 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 |
In order to build first-class industrial boiler products, the company's production workshops all adopt internationally advanced large-scale cross-span steel structure workshops, covering an area of 120,000 square meters, with good lighting and reasonable layout.
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