Automatic Coal Wood Biomass Fired Chain Grate Stoker Steam Boiler
for Paper Mill
Introduction
1. Single cylinder, fire tube (Spirally corrugated tube) and water
tube.
2. Packaged style
3. Fuel can be wood,firewood, logs,waste.etc.
4. Hand fired type.
5. Capacity 4Ton-10Ton/HR
6.Design pressure:1.0Mpa(10bar),1.25Mpa(13bar),1.6Mpa(16bar)
7.Stem temperature:184C,194C,204C
8.Equipped with full set auxiliaries, after simple installation,
the boiler can operate.
Technical Parameters
| Model | Rated evaporation capacity
(t/h)
| Working pressure (Mpa) | Rated steam temperature
(°C)
| Feed water temperature
(°C)
| Boiler body heating area
(m2)
| water
pressure
testing pressure
(M pa )
| Effective area
of grate
(m2)
| Thermal efficiency
(%)
|
| DZL0.5-0.7-T | 0.5 | 0.7 | 170.4 | 20 | 17.5 | 1.05 | 1.1 | 82 |
| DZL1.0-0.7-T | 1 | 0.7 | 170.4 | 20 | 28.6 | 1.05 | 2.14 | 82 |
| DZL1-1.0-T | 1 | 1 | 184 | 20 | 28.6 | 1.4 | 2.14 | 82 |
| DZL1-1.25-T | 1 | 1.25 | 193.3 | 20 | 28.6 | 1.65 | 2.14 | 82 |
| DZL2-0.7-T | 2 | 0.7 | 170.4 | 20 | 55.1 | 1.05 | 2.64 | 82 |
| DZL2-1.0-T | 2 | 1 | 184 | 20 | 55.1 | 1.4 | 3.41 | 82 |
| DZL2-1.25-T | 2 | 1.25 | 193.3 | 20 | 55.1 | 1.65 | 3.41 | 82 |
| DZL4-1.25-T | 4 | 1.25 | 193.3 | 20 | 91.5 | 1.65 | 6.12 | 82 |
| DZL4-1.6-T | 4 | 1.6 | 204.3 | 20 | 91.5 | 2 | 6.12 | 82 |
| DZL4-2.5-T | 4 | 2.5 | 226 | 20 | 91.5 | 3.125 | 6.12 | 82 |
| DZL6-1.25-T | 6 | 1.25 | 193.3 | 20 | 146 | 1.65 | 6.73 | 82 |
| DZL6-1.6-T | 6 | 1.6 | 204.3 | 20 | 146 | 2 | 6.73 | 82 |
| DZL10-1.25-T | 10 | 1.25 | 193.3 | 104 | 288.2 | 1.65 | 12.4 | 82 |
| DZL15-1.25-T | 15 | 1.25 | 193.3 | 104 | 432.3 | 1.65 | 16.2 | 82 |
| DZL20-1.25-T | 20 | 1.25 | 193.3 | 104 | 576.4 | 1.65 | 24 | 82 |
Performance characteristics
1. Designed with horizontal, three passes, all-wet back structure.
2. Fire tubes are surrounded by water, and these design making
efficient up to 80%
3.Threaded tube: Strengthen the heat transfer, increase the boiler
heat efficiency
4. Big combustion room design: increase furnace heating area,
decrease boiler size, and reduce the emission of the Nox Corrugated
hearth make the boiler safer.
5.Adopting water seal eliminate slag, slag through grate drop into
slag notch.
Advantage
1.With efficient special designed spirally corrugated tube----Making boiler’s actual capacity is 10-15% higher than name plate
capacity
2.It uses new hearth with large volume, ----Improving boiler efficiency,reducing fuel consumption in
largely
3. Most advanced technology for arch ---- Boiler's hearth has a dust separation reversing chamber,it
ensures that the original dust discharge concentration is
lower,protection enviroment
4.Optimally designed steam separator ----facilitates vapour gravity separation,and makes the steam
humidity lower than 1%, obviously lower than international standard
of 4%;
Applicable fuels
This is Applied for Textile Mill,Food and
Beverage,Chemical,Medicine,Light Industry,Rubber,Printing and
Dyeing Plant,Paper Mill,Wood Processing,Garment and Laundry etc.
FAQ
1.What are the spare parts for DZL/SZL series coal/biomass fired
boiler?
Generally, the spare parts are instrumentation valve, grate plate,
gasket, etc.
2.What are the differences between vertical type boiler and
horizontal type boiler with the same capacity?
1.Structure of vertical boiler is compact, occupy a limited area,
2.Convenient on installation and removal.
3.Low cost and investment on capital construction. Steam exhausted
fast and sufficient.
1.The combustion space of horizontal is big, fuel can be burned
completed.
2.The thermal efficiency is higher than the vertical boiler,
3.Horizontal type: less thermal loss, stronger output, and higher
steam quality.
3.What are the limitation (size, humidity, chemical element
concentrations) of coal fuel/solid fuel/wood fuel?
Size requirement of coal:6-25mm
Size requirement of blending coal: <50mm (the coal less than 6mm
should less than 30%)
Diameter of biomass particle: 6~10mm, length: 25~50mm, water
content < 15%, ash content < 2%, sulphur content<0.07%,
chlorinity <0.07%, nitrogen content < 0.5%
4.What is the size of furnace door and blower hopper?
Size of furnace door:
Standard elliptical furnace door:300*800*1500
Blower hopper size:
2 tons conical hopper: 1400*800*1500
4 tons conical hopper: 2200*1400*1500
