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DHL series biomass-fired steam boiler

DHL series biomass-fired steam boiler

Advantages

Safe water circulation

The boiler adopts a unique water circulation structure, the drum is free from heat and the heated water flows in one direction. In the event of a power outage, the water system does not vaporize and the water circulation is safe and reliable.

Anti-seismic Structure

Corner tube boiler adopts non-framework structure, boiler proper weight is supported by membrane wall and down comer, and all membrane walls are all welded into one whole, with good anti-seismicity.

Complete sealed structure

All around the boiler proper is made of welded membrane walls, and the steel structure is completely sealed to prevent the occurrence of air leakage. The upper part of the boiler can be divided according to the size of the railway transportation limit. The excess air coefficient after the heating surface of the boiler tail is only less than 1.2, which not only reduces the heat loss of the exhaust fumes, reduces the power consumption of the induced draft fan, but also greatly reduces the environmental pollution of the boiler house.

Overview

The DHL series biomass-fired steam boiler is a single drum horizontally mounted bulk water tube boiler. The boiler is a horizontally-circulated single-drum natural circulation water tube boiler, which adopts a scale-type non-leaking coal chain grate, and is equipped with a stepless speed regulation transmission device, and the boiler body is welded by a membrane water wall. The boiler is designed with a cast iron internal threaded outer finned tube air preheater to improve thermal efficiency. The membrane type wall is covered with special composite silicate board, coated with heat-insulating waterproof surface, and the temperature of the furnace wall is controlled within 50 °C to further improve the thermal efficiency.

Technical data

Model Rated thermal power(MW) Rated working pressure(MPA) Rated output water temperature(℃) Rated imported water temperature(℃)
DHL35-1.25-M 35 1.25 194 29
DHL50-1.25-M 50 1.25 194 89
DHL75-1.25-M 75 1.25 194 29
ZZ-35/3.82-M 35 3.8 450 89
ZZ-50/3.82-M 50 3.8 450 89
ZZ-65/3.82-M 65 3.82 450 91
ZZ-75/3.82-M 75 3.82 450 91
ZZ-75/5.3-M 75 5.3 485 91

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