Chain Grate Coal Fired Steam Boiler

Boiler Capacity: 0.5-25T/h
Rated Pressure: 0.7-2.5Mpa
Voltage Used Widely: 220-460V/50-60Hz
Design Efficiency:≥81%
Certification: GB, ISO, ASME, CE, ECA
After-sales Service Provided: Engineers available to service machinery overseas
Features: Energy saving, environmental protection, safe and efficient.


Features of DZL Chain Grate Coal Fired Steam Boiler:

1. Adopt high-performance heat transfer components of a threaded pipe, with a reasonable gas flow rate, the boiler thermal efficiency of the high professional standards than the state 6-8 percentage points.
2. Convex tube plate, thread to make pot pipe from the quasi-rigid body shelf variable based elastomer with the airfoil stack, completely avoid the traditional high-temperature pyrotechnic tube plate cracking defects.
3. Reasonable water loop and a unique backwater ejector device hot water boiler, improved the increased water velocity, to avoid the water-wall tube.
4. Adopt inertial separation of dust furnace supplemented by high-performance multi-collector, so that the concentration of dust emission boiler to meet the demand for a class, reasonable structure of the boiler does not need a steel frame can support the weight of its own.
5. Adopt saving energy, strong radiation furnace arch, can guarantee the stability of bituminous coal or anthracite combustion.
6. Adopt high standard, high-quality auxiliary equipment, accessories and automatic control equipment, boiler guarantee security, stability operations, while reducing the labor intensity boiler operation.
7. Compact.1-20t/h(0.7-14MW) boiler can be single-layer layout.
8. Boiler capacity is 1-35 t/h (0.7-29MW).

  Item\Type DZL1-0.7-A II
DZL1-1.0-A II
DZL1-1.25-A II
DZL2-0.7-A II
DZL2-1.0-A II
DZL2-1.25-A II
DZL3-0.7-A II
DZL3-1.25-A II
DZL4-1.25-A II
Rated capacity t/h 1 2 3 4
Rated steam pressure MPa 0.7/1.0/1.25 0.7/1.0/1.25 0.7/1.25 1.25
Rated steam temperature ℃ 170/184/194 170/184/194 170/194 194
Feed water temperature ℃ 20 20 20 20
Heated area  ㎡ radiation/
4.68/16.1 6.2/39.5 8.2/45.3 10.06/73.53
Boiler thermal efficiency % 79 79.07 82 80
Fuel consumption  kg/h 167 330 498 662
Effective area of grate ㎡ 1.8 3.04 3.34 5.14
Transportation size of boiler mm length 4876 5290 5360 6237
width 1800 2240 2240 2660
height 2820 3208 3208 3520
Weight of largest parts of boiler transportation (t) 13.3/13.5/13.7 18.5/18.8/18.8 20.8/21 27


Boiler Advantage:

  • Safety: With water level, leakage steam, steam pressure control. Make sure boiler working safety.
  • Product quality ensured by: Strength calculation report, hydraulic test, X-ray, non-destructive test.
  • Efficient: Well insulation and excellent structure.
  • Spirally corrugated tube increase the strength and also meets the needs of heat expansion of each parts.
  • Welding: Welding mainly uses advanced automatic welding, gas protected welding, TIG welding. Drum and other main pressure parts adopt CNC automatic welding, all of the welding 100% passed penetrant inspection.

Our Services:

1. 100%safety, running stably, excellent water level and pressure control, fully automatic operation.
2. Boiler running life > 20 years.
3. Good after-sale service. It is free for you to get the damaged spares in warranty period (1 year) if there is any questions. Assure that we can supply you spares in boiler’s all life.
4. We can arrange engineer to your company for installation and commissioning and training. If you need us at any time, we can send our technicians and prepare in a short time.
5. Special paint is used after assembly. Paint is particularly used in your climate area, which is anti-corrosion, anti-abrasion and color-fastness.


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