DHL series biomass hot water boiler

DHL series biomass hot water boiler Introduction

After much quantity market research, our company engineer design and revised QXL(DHL) series big corner tube forced circulation boiler. This design has included new Membrane-wall structure, optimal combination of arch and forced circulation system and other new technologies. Not only enhance combustion efficiency and fuel flexibility, but also desulfurization in biomass hot water boiler. That can reduce sulfur emission and protect environment.

 

 

Application fileds

Our oil/gas fired boilers can be divided into DHS series angle tube boiler,SZS water tube boilers and WNS fire tube boilers depending on the medium inside the tubes. With multiple pressure designs, the water tube boilers can meet the steam supply requirements of 2.5MPa or above. The fire tube boilers, on the contrary, are intended for use at pressures below 2.5 MPa. Fire tube boilers usually have a capacity of below 20t/h, while water tube ones of 20t/h or more as capacity expansion is possible.
The three series are designed with large furnaces, the thermal efficiency is over 98%, and the NOx emissions are as low as 30mg/Nm3. The front and rear smoke boxes are all equipped with a unique sealing structure to ensure that the smoke box does not leak smoke. At the same time, it has the characteristics of fully automatic and safe operation.

 

Product features:

1. High thermal efficiency: all biomass hot water boiler body sides surrounded was welded by emebrance water cooling wall. The tube model air preheater can enhance its thermal efficiency. Chain grate ventilation cross section ratio about 6%, with different part for different ventilation, to reduce carbon content inside the ash. Big furnace design can make hot air flue stay for long time inside the furnace. The fly ash and combustible gas can be burnt sufficiently to increase the thermal efficiency.
2. Big fuel flexibility: special front and back arch design can improve the coal ignation .burning condition to achieve the widely fuel selection.
3. Safety water circulation: special flag type heating surface design, and V stability structure, make boiler drum without direct heating, and make water circulation more safely.
4. Less pollutants and more energy saving: boiler flue have inertial separator to make sure few abrasion and stoppage in economizer and air preheater. The emission is much lower.
5.No steel structure , good shock resistance: boiler weight have burdened by membrane-wall .down tubes. Rigid beam fixed and brace. Membrane wall welded together, can against M8 earthquakes.
6. New boiler wall insulation structure: membrane wall covered by special compound silicate board and make waterproof treatment, then fully covered by color steel plate. The boiler uses full pipe-laying structure with good insulation, lightweight and beautiful appearance characteristics.

7. Low installation, operation and maintenance cost: boiler utilize modular type design philosophy with assembled water pipe system, which can save much of the installation time., and no fire bricks wall design can save much refractory materials cost each year.

 

Boiler type QXL14-1. QXL21-1. QXL29-1. QXL46-1. I OXL58-1. QXL70-1.
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