SZL double drum horizontal chain-grate biomass boiler

SZL double drum horizontal chain-grate biomass boiler

Fuel type: natural gas
Typical application: laundries and ironing, food manufacturers, power plants, district heating, winter heating, industrial steam and hot water supply, etc
Thermal efficiency: ≥82%
Boiler capacity: 6 – 20t/h

The double-drum vertical steam boiler comes with a chain grate system and fitted with an updated design of water tube assembly. It is highly efficient with high overload capacity and can be used with a wide range of fuels. The boiler is mainly made up of an upper part and a lower part, with an economiser and an air preheater fitted to the rear. The furnace is equipped with a moving grate. The flue gas passes the tubes twice transferring heat to water before being directed to the economiser and air preheater. The ash/airborne particles contained in the flue gas is collected by the precipitator preventing them from being released into the atmosphere or the surrounding area. The cyclone separator is used in the first stage of the particle removal process. It creates a spiral vortex inside the chamber in order to collect particles in the flue gas. The wet scrubber is a more sophisticated device than the cyclone separator. It operates under the same principle as the cyclone separator but also makes use of water in the process. It not only collects particles in the flue gas, but also absorbs and neutralises some of the harmful gases in it, thereby reducing the overall emission of particles and harmful gases.

FEATURES

Complete combustion system

Chain-grate boiler, independent wind chamber

Advanced engineering

Thermal efficiency ≥85%
Tight membrane wall structure with large radiating area
Automatic pressure, temperature and water level controls

Low carbon footprint and eco-friendly

Compliant with national manufacturing specifications

Investment cost

Abundant fuel sources with stable prices
Simple on-site installation: single-storey boiler room, short installation period

SPECIFICATION

Model
SZL(W)6-1.25-M SZL(W)8-1.25-M-| SZL(W)10-1.25-M-|| SZL(W)15-1.25-M SZL(W)20-1.25-M
Specification Rated evaporation t/h 6 8 10 15 20
Rated steam pressure Mpa 1.25/1.6
Rated steam temperature 193/204
Rated water inlet temperature 20/105
Design thermal efficiency % >82
Heat of combustion kcal/kg 4000
Fuel consumption kg/h 1140 1332 1665 2500 3330
Blower GG6-15 GG8-15 GG10-15 GG15-15 GG20-15
Fan GY6-15 GY8-15 GY10-15 GY15-15 GY20-15
2nd fan 9-26-4.5A 9-26-5A 9-26-5.6A
Governor box type GP-10P GL-16P GL-20P
Slag way Shave plate-type/ Spiral
Precipitator Cyclone dust removal/Water film dust removal
Heated surface
Ontology 209 255 298 438 568
Steel economizer 35.3 32 47 80 102
Economizer 65.6 130.8 174.4 354 413
Air preheater / 80.9 120 170 220.8
Pump Model QDL8-20 QDL12.5-11 QDL12.5-13 QDL18-13 QDG-G36*6
Input power Kw 7.5 11 15 22 30
Pipe Main steam valve diameter DN 125 150 200
Water inlet diameter DN 40 50 80
Safety valve diameter DN 80*1/50*1 80*2 100*2
Blowoff valve diameter mm 50/40
Chimney Φ 600 700 850 1000 1200
Overall size Weight t/h 72 85 100 150 175
Length m 8.9 8.5 10.7 12 13.2
Width m 3.2 2.8 3.5 3.7
Height m 6 5.6 6 6.8
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