DZL Coal Fired Hot Water Boiler
Introduction
Model specification and Configuration Illustration
Fuel choice instruction:design different arch according to different coal form for satisfaction burn requirement
The instruction of Grate's configuration: choose different grate according to the quality of coal
The instruction of dust collector's configuration:choose different dust collector according to different environmental protection regulation
The instruction of slag remover configuration:choose different removers(spiral or scraper) according to the feature of fuel
The instruction of steam distributor's configuration:choose the number of tube socket of output and input according to the workshop's requirement
The instruction of water treatment device's configuration:choose water treatment device' according to the hardness of water
DZL Coal Fired Hot Water Boiler
DZL Coal Fired Hot Water Boiler
DZL Coal Fired Hot Water Boiler
Unique Orientation
The paragon of water-fire tube shell boiler
The new DZL water-fire tube boiler is a new eco-friendly and energy-saving product. After 30 years' Research and experiment by professor Li Zhiguang,an boiler expert, professor of Harbin Institute of Technology and director of Beijing Institute of Light Boiler. It is a water- fire tube shell boiler, vertical furnace, two-wing flue, and the design of three-pass spirally corrugated tube. Using the unique spirally corrugated tube technology to transfer the heat efficiently. With compact structure, scientific construction technology, precise manufacture, high technical maturity and stable operation, it is well recognized by users after more than 20 years' market experience.
Presentation of boiler body detail
Arched tube plate
Spirally corrugated tube
Presentation of boiler grate detail
Block and porous of grate bars
The design of independent Coal storage bucket
External oil cup design
Features
Unique manufacturing technique and complete inspection process
1. High temperature annealing treatment of Arched tube plate
2. Fully automated tube sheet welding
3. 1.4 times' hydro test
4. All-around crack detection
5. Optimized installation technique after 20 years
6. 24 hours operation debugging of grate
7. 60 lines inspection before delivery
8. Fully automated processing of spirally corrugated tube
9. Fully automated Precise technique of blanking
10.Experienced welding construction team
Technology
Unique Technical Expression
1. Spirally corrugated tube
2. Two-wing Flue
3. Arched tube plate
4. Injection water to high temperature tube plate
5. Jetting pipe
6. Large-sized down pipe
7. Independent self support
8. New arch
9. Smoke separation room
10. Optimaized CAD
11. Front and rear furnace door for watching fire
12. Customized furnace arch
Control System Technical Features
1.Indication of operating status, with start/stop button
2.circulation pump interlock
3.scheduled startup of operation
4.display of numbers of ignition and combustion
5.high temperature /high pressure/ low pressure/ antifreeze/ burner stop alarm functions
6.display of malfunctions
7.self-interlock during power down for protection
8.date/information collection, analysis,and storage function
9.password protection of controller
10.modbus RS485 interface,connection to upper control system or DCS system of the plant from multiple boilers
The Machine's Technical Features
1.Chain belt type grate stoker
2.The boiler is packaged well before leaving factory
3.Economizer configuration
4.Double pressure gauge configuration
5.Double circulating water pump configuration
6. Intelligent control
7.Simple foundation construction
8.Auxiliaries modularity design
Configuration Instructions
Instruction of the boiler's configuration:
Boiler Main Body
Boiler Main Body
Induced Fan
Induced Fan
Forced Fan
Forced Fan
Speed Reducer
Speed Reducer
Control Box
Control Box
Valves and Gauges
Valves and Gauges
Instruction of system configuration:
Ceramic Multi-tube Dust Collector
Ceramic Multi-tube Dust Collector
Composite Granite Water Film Dust Collector
Composite Granite Water Film Dust Collector
Chimney and Smoke Ducting
Chimney and Smoke Ducting
Economizer
Economizer
Slag Remover
Slag Remover
Softened  Water Device
Softened Water Device
Water distributor and Water Collectormanifold
Water distributor and Water Collectormanifold
Circulating Water Pump
Circulating Water Pump
Process of smoke flow:
Forced fan-grate-furnace-the two wings flue-front smoke box-smoke pipe-back smoke box-Economizer-Ceramic multi-tube dust collector-Composite granite water film dust collector -Induced fan - chimney  
 picture
Waterway Process:
Tap water-Softened water tank-supply water pump-boiler-steam distributor-workshop
Parameters
Model DZL0.7-0.7/95/70-AII DZL1.4-0.7/95/70-AII DZL2.8-0.7/95/70-AII DZL4.2-1.0/95/70-AII
Rated Thermal Capacity(MW/h) 0.7 1.4 2.8 4.2
Rated Working Pressure(MPa) 0.70  0.70  0.7 1.00 
Outlet Water Temperature(℃) 95 95 95 115
Inlet Water Temperature(℃) 70 70 70 70
Boiler Water Capacity(m3) 4.18 4.77 7.5 10.3
Flue Gas Temperature(℃) 114 155 142 133
Furnace Radiant Heating Surface(m2) 24.66 48.9 94.3 138.84
Grate Effective heating surface(m2) 2.15 3.24 5.4 8.03
Maximum shipping dimension(mm) 5230x2000x2841 5950x2400x3186 7070x2700x3470 7700x3200x3884
Maximum shipping weight(T) 12.5 22.5 27 42
Packaging and Shipping
The boiler is packaged before leaving factory within1-6t/h
The arch of boiler is built in locale above 6t/h
Our Services
Promises
1.Technology accumulation of 60 years,over ten thousands users,its life is up to 20 years
2.Pricise product, mature technology, cost-effective choice
3.We not only provide devices,but also technology and service
4.We are a company with technology and soul,Good reputation is our secret weapon.
Policy instruction
One set of free spare parts will be shipped to you if ordered before April 1.
 
After-sales service
1 year guarantee,free maintenance within 1 year if there is quality problem.
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