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DZL Coal Fired Chain Grate Boiler

  • Overview
  • Advantage
  • Parameter

Sitong DZL coal fired chain grate boiler realizes almost zero pollution with the use of special dust collector solution (bag dust collector, double towers desulfurization, etc.), it is honored as Chinese famous brand. This series boiler is single drum horizontal type shell boiler with three-pass structure, the combustion equipment is chain grate (small scale flaker is available), has the advantages of feed mechanically, strong adaptability of different fuels, low coal leakage, and convenient maintenance. The fuel is coal, the diameter should be 6-25mm, and ash content should be less than 32.4%. 


This DZL series coal fired chain grate boiler uses the new scientific achievement, such as arch tube plate, spirally corrugated tube to solve the problem of low thermal efficiency, tube plate cracking, drum bulging, insufficient output, and environmental pollution. Sitong Boiler has a mature R&D and design team, could customize the boilers based on customers’ requirement. 


Application:

DZL series coal fired chain grate steam boiler is widely used in industries, such as chemical industry, textile plant, rice mill, garment factory, utility or power plant, hospital, hotel, food & beverage, diaries, schools, chemical industry and many other applications. Hot water is usually used in farm, hotel, school, hotel, gym, etc.


Performance Advantages

 

1. Excellent chain grate

1) The small scale chain grate boiler could resist the temperature as high as 1200℃, long working life.

2) The chain grate has a low coal leakage because of the small gap.

3) High automatic degree, decrease labor cost.

4) Convenient for maintenance, it could be done without boiler shut down.

5) Based on customers’ requirement and fuel characteristics, the grate could be designed as small scale grate, chain belt grate, bar grate, etc.


2. High thermal efficiency

1)The spirally corrugated tube strengthen the heat transfer, improve thermal efficiency. The flue gas has the foundation of disturbance, avoid ash depositing in tube.

2)The furnace wall was poured entirely by the heat-resistance concrete and high-temperature-resistance refractory brick, and the boiler shell use aluminium silicate board for heat preservation, low heat loss.

3) Equipped with economizer, make full use of the heat of flue gas, decrease the exhaust smoke temperature, increase thermal efficiency.

 

3. Avoid bulging

The riser tube bundle under the drum, remove the dead water region at the bottom of drum, sludge is not easy for depositing, the high temperature area of drum has better cooling, prevent bulging.

 

4. Avoid tube plate cracking

1) The boiler adopts arched tube plate and spirally corrugated tube, change the quasi-steel body into quasi-elastic body structure, reduce stress, solves the problems of tube plate cracking.

2) Arrange two sides gas duct in drum, the smoke gas could enter into the front smoke chamber smoothly, the temperature of tube plate is lower than 600℃, avoid cracking leaded by high temperature.


5. Sufficient output

Adopts horizontal type three pass structure and large furnace, to ensure the sufficient combustion, and the boiler could absorb the thermal expansion effectively. The large diameter boiler drum increases the radiant heating surface, to ensure the sufficient output.

 

6. Environmental protection

1) The splayed wall and smoke outlet have the function of dust removal, decrease the concentration of smoke emission.

2) The moving grate boiler adopts several environmental protect measures (bag dust collector, double towers desulfurization, etc.) to meet the national emission requirement.


Parameter


Steam Boiler

Model

Rated Steam

Capacity (t/h)

Rated Steam 

Pressure (MPa)

Rated Steam 

Temperature (℃)

Coal Consumption 

 (Kg/h)

Thermal Efficiency 

 (%)

Overall Dimension

  L*W*H(m)

Weight 

 (t)

DZL2-0.7/1.0/1.25- AII/T 2 0.7/1.0/1.25 170/184/194 135 82 5.5×2.3×3.3 23
DZL6-1.25/1.6- AII/T 6 1.25/1.6 194/204 810 82 7.5×2.9×3.8 35
DZL8-1.25/1.6- AII/T 8 1.25/1.6 194/204 1150 82 8.1×3.1×3.8 45
DZL10-1.25/1.6- AII/T 10 1.25/1.6 194/204 1350 82 Up 7.7×3.2×3.6 Down 8.6×3×2.6 61
DZL15-1.6/2.5- AII/T 15 1.6/2.5 204/226 2200 83 Up 1.0×3.24×3.54 Down 12×3.2×3.08 77
DZL20-1.25/1.6- AII/T 20 1.6/2.5 204/226 3160 83 Up 11×3.24×3.54 Down 14×3.2×3.08 78

Note: 1. Parameter is for reference only, if any changes should follow the factory technical data. 

 2. Available fuel: coal, lower heating value: Q≈21,000 KJ/Kg


Hot Water Boiler

Model

Rated power

 (MW)

Rated pressure 

(Mpa)

Supply water

 temperature(℃)

Return water temperature

(℃)

Fuel consumption 

(kg/h)

Thermal Efficiency 

(%)

Overall Dimension

  L*W*H(m)

Weight 

 (t)

DZL0.7-0.7/95/70 0.7 1.0 95 70 151 82 5.1x2.2x3 17
DZL1.4-0.7/95/70 1.4 1.0 95 70 302 82 5.5x2.3x3.3 23
DZL2.8-0.7/95/70 2.8 1.0 95 70 600 82 6.6x2.6x3.6 25
DZL4.2-1.0/95/70 4.2 0.7 95 70 880 82 7.5x2.9x3.8 35
DZL5.6-1.25/95/70 5.6 0.7 95 70 1150 82 8.1x3.1x3.8 45

Note: 1. Parameter is for reference only, if any changes should follow the factory technical data. 

 2. Available fuel: coal, lower heating value: Q≈21,000 KJ/Kg




1. Excellent chain grate

1) The small scale chain grate boiler could resist the temperature as high as 1200℃, long working life.

2) The chain grate has a low coal leakage because of the small gap.

3) High automatic degree, decrease labor cost.

4) Convenient for maintenance, it could be done without boiler shut down.

5) Based on customers’ requirement and fuel characteristics, the grate could be designed as small scale grate, chain belt grate, bar grate, etc.


2. High thermal efficiency

1)The spirally corrugated tube strengthen the heat transfer, improve thermal efficiency. The flue gas has the foundation of disturbance, avoid ash depositing in tube.

2)The furnace wall was poured entirely by the heat-resistance concrete and high-temperature-resistance refractory brick, and the boiler shell use aluminium silicate board for heat preservation, low heat loss.

3) Equipped with economizer, make full use of the heat of flue gas, decrease the exhaust smoke temperature, increase thermal efficiency.

 

3. Avoid bulging

The riser tube bundle under the drum, remove the dead water region at the bottom of drum, sludge is not easy for depositing, the high temperature area of drum has better cooling, prevent bulging.

 

4. Avoid tube plate cracking

1) The boiler adopts arched tube plate and spirally corrugated tube, change the quasi-steel body into quasi-elastic body structure, reduce stress, solves the problems of tube plate cracking.

2) Arrange two sides gas duct in drum, the smoke gas could enter into the front smoke chamber smoothly, the temperature of tube plate is lower than 600℃, avoid cracking leaded by high temperature.


5. Sufficient output

Adopts horizontal type three pass structure and large furnace, to ensure the sufficient combustion, and the boiler could absorb the thermal expansion effectively. The large diameter boiler drum increases the radiant heating surface, to ensure the sufficient output.

 

6. Environmental protection

1) The splayed wall and smoke outlet have the function of dust removal, decrease the concentration of smoke emission.

2) The moving grate boiler adopts several environmental protect measures (bag dust collector, double towers desulfurization, etc.) to meet the national emission requirement.

Steam Boiler

Model

Rated Steam

Capacity (t/h)

Rated Steam 

Pressure (MPa)

Rated Steam 

Temperature (℃)

Coal Consumption 

 (Kg/h)

Thermal Efficiency 

 (%)

Overall Dimension

  L*W*H(m)

Weight 

 (t)

DZL2-0.7/1.0/1.25- AII/T 2 0.7/1.0/1.25 170/184/194 135 82 5.5×2.3×3.3 23
DZL6-1.25/1.6- AII/T 6 1.25/1.6 194/204 810 82 7.5×2.9×3.8 35
DZL8-1.25/1.6- AII/T 8 1.25/1.6 194/204 1150 82 8.1×3.1×3.8 45
DZL10-1.25/1.6- AII/T 10 1.25/1.6 194/204 1350 82 Up 7.7×3.2×3.6 Down 8.6×3×2.6 61
DZL15-1.6/2.5- AII/T 15 1.6/2.5 204/226 2200 83 Up 1.0×3.24×3.54 Down 12×3.2×3.08 77
DZL20-1.25/1.6- AII/T 20 1.6/2.5 204/226 3160 83 Up 11×3.24×3.54 Down 14×3.2×3.08 78

Note: 1. Parameter is for reference only, if any changes should follow the factory technical data. 

 2. Available fuel: coal, lower heating value: Q≈21,000 KJ/Kg

Hot water boiler

Model

Rated power

 (MW)

Rated pressure 

(Mpa)

Supply water

 temperature(℃)

Return water temperature

(℃)

Fuel consumption 

(kg/h)

Thermal Efficiency 

(%)

Overall Dimension

  L*W*H(m)

Weight 

 (t)

DZL0.7-0.7/95/70 0.7 1.0 95 70 151 82 5.1x2.2x3 17
DZL1.4-0.7/95/70 1.4 1.0 95 70 302 82 5.5x2.3x3.3 23
DZL2.8-0.7/95/70 2.8 1.0 95 70 600 82 6.6x2.6x3.6 25
DZL4.2-1.0/95/70 4.2 0.7 95 70 880 82 7.5x2.9x3.8 35
DZL5.6-1.25/95/70 5.6 0.7 95 70 1150 82 8.1x3.1x3.8 45

Note: 1. Parameter is for reference only, if any changes should follow the factory technical data. 

 2. Available fuel: coal, lower heating value: Q≈21,000 KJ/Kg

Case

  • 6tph Wood Fired Chain Grate Steam Boiler for Bangladesh Wood Processing

    6tph Wood Fired Chain Grate Steam Boiler for Bangladesh Wood Processing

    1. Lengthen the grate to dry the wood fuel before enter into the furnace for combustion.
    2. Equipped with European valves,to ensure the boiler’s safe and stable operation.
    3. Provide a wood grinder to get the proper size wood fuel.

    Learn more >>

Transaction Process

PRE-SALE SERVICE

1) 24 hours customer service hot line, we will offer you professional technical data, suggestion, and purchase guidance.

2) Welcome to visit our factory, we could offer you free airport pick up service, and help you book hotel, tickets, or plan route, etc.


ON-SALE SERVICE

Our professional engineering team will customize the boiler based on your requirement. Also, we could help arrange the boiler room and offer appropriate energy utilization plan, to maximum boiler users’ profit. Sitong Boiler cooperates with experienced transportation agency, to ensure the products arrive to destination intactly. We have overseas installation team for door to door installation, debugging, and periodic maintenance.

Process

customer inquiry -- professional consulting service, customize boiler based on requirement -- place order and pay deposit -- boiler manufacturing -- pay balance -- delivery -- installation, debugging and periodic maintenance


AFTER-SALE SERVICE

1) Offer lifelong door - to - door after sale service and quarterly visiting. We have professional overseas engineering team and overseas agencies, to solve users’ problems during boiler operation

2) 24 months warranty period, if boiler body or accessories are damaged under proper operation, Sitong boiler will maintenance or replace the damaged accessories for free (except spare parts).

3) 24 hours service hot-line, offer proper solutions to solve the problems happened during operation.

Inquiry

info@stongboiler.com

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