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DHL series biomass steam boiler

ZG boiler DHL series biomass boiler is a high-capacity layer-burning chain grate energy-saving product, has the advantages of  high boiler thermal efficiency, high level of technology and low initial emission concentration.
  • Rated steam capacity: 10-160 T/H
  • Rated steam pressure: ≤5.29 MPa
  • Rated steam temperature: 194 ~ 226 °C
  • Applicable fuel: Rice Husk, Wood Pellet, Bagasse

Products introduction:

The ZG boiler DHL series biomass boiler is a corner tube type chain grate boiler. It introduces foreign technology through the GEF project, and has two invention patents proposed by Xi'an Jiaotong University. This chain grate boiler is a high-capacity layer-burning chain grate energy-saving product with reliable water circulation, high-efficiency combustion and low pollution discharge according to the technical development characteristics of the chain grate and the independent innovation of the market demand.

DHL series biomass steam boiler performance characteristics:

1. High boiler thermal efficiency

Membrane wall structure is adopted around the furnace and downlink flue with good sealing performance and low heat loss. The large cross section and high furnace structure are adopted to reduce the gas flow rate in the furnace so that the flue gas can stay in the furnace for sufficient time. The advanced crossbar grate with the back arch of the optimized design makes the slag burn out high, so the boiler thermal efficiency is high.

2. Technical characteristics

The two boiler product design invention patents studied by Xi'an Jiaotong University were adopted. The beam type grate was used, the failure rate was low, and the light furnace wall structure was adopted, and the heat preservation performance was good. The boiler adopts the secondary air turbulent combustion design idea and the fly ash high temperature separation + fly ash internal circulation fluidization reburning technology, and the boiler efficiency is high.

3. Low initial emission concentration

The corner tube chain grate biomass boiler does not need to add bed material such as quartz sand, and the layer combustion type, so the fly ash share is small. The corner tube boiler is arranged in a multi-flue, which significantly reduces the original dust concentration of the boiler.

Technical Parameters:

Model Rated steam capacity(T/H) Rated steam pressure(MPa) Rated steam temperature( °C) Feed water temperature(°C) Fuel type
DHL20-1.25-T 20 1.25 194 105 biomass pellet
DHL20-1.6-T 20 1.6 204 105
DHL20-2.5-T 20 2.5 226 105
DHL35-1.25-T 35 1.25 194 105
DHL35-1.6-T 35 1.6 204 105
DHL35-2.5-T 35 2.5 226 105
DHL45-1.25-T 45 1.25 194 105
DHL45-1.6-T 45 1.6 204 105
DHL45-2.5-T 45 2.5 226 105
DHL75-1.25-T 75 1.25 194 105
DHL75-1.6-T 75 1.6 204 105
DHL75-2.5-T 75 2.5 226 105

R & D background:

Biomass resources are widely distributed and suitable for local development and utilization. At present, the development of biomass energy combustion technology suitable for various industrial boilers will have positive significance for saving conventional energy and optimizing energy structure.

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