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

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

Induced Fan

Forced Fan

Speed Reducer

Control Box

Valves and Gauges

Instruction of system configuration:

Ceramic Multi-tube Dust Collector

Composite Granite Water Film Dust Collector

Chimney and Smoke Ducting

Economizer

Slag Remover

Softened Water Device

Water distributor and Water Collectormanifold

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.