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SZL Coal Fired Double Drum Boiler

  • Overview
  • Advantage
  • Parameter

SZL series double drums boiler is horizontal type large capacity water tube boiler with high steam quality. Compare with the previous boiler, the new type SZL boiler adopts membrane water cooling wall, low thermal inertia design, and water cooling combustion chamber. Boiler with steam capacity lower than 4t/h is fast assembly water tube structure, the boiler with steam capacity between 6~25t/h is consisted of upper part (boiler heating part) and lower part (combustion equipment). This series boiler has reached the international advanced level on technology and performance, has the advantages of compact structure, convenient installation, short install period, low cost, and environmental protect.


Application:

SZL series double drum steam boiler is widely used in industries, such as textile plant, rice mill, garment factory, utility or power plant, etc. The relevant capacity hot water boiler is widely used in hospital, hotel, school, farm, etc.


Advantages


1. Advanced arch design

1) Furnace arch adopts advanced design, forming obvious inverse “α” flue gas flow, which makes the boiler strong adaptability of different fuels.

2) The front and back arches are “wet arch” structure, keep a constant temperature and protect the arch.


2. Membrane water wall

1) Adopts water cooling combustion chamber, increase the radiant heating area, improve the output and thermal efficiency.

2) The boiler body use membrane water wall structure, good sealing, low heat lose.

 

3. Excellent chain grate

1) The grate is 500~1000mm longer than others, the fuel combustion time is longer, improve the combustion efficiency.

2) The small scale flake grate could resist the temperature as high as 1200℃, long working life.

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

4) High automatic degree, decrease labor cost.

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


4. Sufficient output

The boiler is equipped with double drums, membrane water wall, and large diameter furnace, the radiant heating area increases more than 50%, achieves sufficient output.

 

5. Low thermal inertia insulating layer

The boiler shell use light aluminum silicate board for heat preservation, low thermal inertia, and low heat loss. The temperature of furnace rise up quickly.


6. Both sides air inlets

Boiler adopts bilateral air inlets and independent wind chambers, could adjust wind volume and pressure flexible, to ensure the sufficient combustion.


Parameter


Steam Boiler

Model

Steam capacity (t/h)

Working pressure (MPa) Thermal Efficiency (%) Coal consumption  (kg/h) Weight (t) Overall dimension L*W*H(m)
SZL2-1.25/1.6/2.5-AII 2 1.25/1.6/2.5
81 240 25 5.8×2.35×3.5
SZL4-1.25/1.6/2.5-AII 4 1.25/1.6/2.5 81 480 32 7.8×2.4×3.6
SZL6-1.25/1.6/2.5-AII 6 1.25/1.6/2.5 81 720 43 8×3×4.87
SZL8-1.25/1.6/2.5-AII 8 1.25/1.6/2.5 81 960 63 8.1×3.2×5.7
SZL10-1.25/1.6/2.5-AII 10 1.25/1.6/2.5 81 1200 87 8.2×3.5×5.7
SZL12-1.25/1.6/2.5-AII 12 1.25/1.6/2.5 81 1440 100 10.6×3.6×5.7
SZL15-1.25/1.6/2.5-AII 15 1.25/1.6/2.5 82 1830 105 12.5×3.7×5.8
SZL20-1.25/1.6/2.5-AII 20 1.25/1.6/2.5 82 2400 140 13.8×4.2×5.8
SZL25-1.25/1.6/2.5-AII 25 1.25/1.6/2.5 82 3000 170 15.6×5×6.135
SZL30-1.25/1.6/2.5-AII 30 1.25/1.6/2.5 82 3600 210 17.7×8.5×9.5

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

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


Hot Water Boiler

Model

Rated Power(MW)

Working pressure(Mpa)

Supply water temp.(℃)

Return water temp.(℃)

Fuel consumption(kg/h)

Thermal efficiency(%)

SZL1.4-0.7/95/70-AII 1.4 0.7 95 70 ~300 80
SZL2.8-0.7/95/70-AII 2.8 0.7 95 70 ~590 80
SZL4.2-1.0/95/70-AII 4.2 1.0 95 70 ~880 80
SZL5.6-1.0/95/70-AII 5.6 1.0 95 70 ~1160 80
SZL7-1.0/95/70-AII 7 1.0 95 70 ~1450 80
SZL10.5-1.0/115/70-AII 10.5 1.0 115 70 ~2200 80
SZL14-1.0/115/70-AII 14 1.0 115 70 ~1160 80

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

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




1.25/1.6/2.5

1. Advanced arch design

1) Furnace arch adopts advanced design, forming obvious inverse “α” flue gas flow, which makes the boiler strong adaptability of different fuels.

2) The front and back arches are “wet arch” structure, keep a constant temperature and protect the arch.


2. Membrane water wall

1) Adopts water cooling combustion chamber, increase the radiant heating area, improve the output and thermal efficiency.

2) The boiler body use membrane water wall structure, good sealing, low heat lose.

 

3. Excellent chain grate

1) The grate is 500~1000mm longer than others, the fuel combustion time is longer, improve the combustion efficiency.

2) The small scale flake grate could resist the temperature as high as 1200℃, long working life.

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

4) High automatic degree, decrease labor cost.

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


4. Sufficient output

The boiler is equipped with double drums, membrane water wall, and large diameter furnace, the radiant heating area increases more than 50%, achieves sufficient output.

 

5. Low thermal inertia insulating layer

The boiler shell use light aluminum silicate board for heat preservation, low thermal inertia, and low heat loss. The temperature of furnace rise up quickly.


6. Both sides air inlets

Boiler adopts bilateral air inlets and independent wind chambers, could adjust wind volume and pressure flexible, to ensure the sufficient combustion.

Steam Boiler

Model

 Steam capacity (t/h)

Working pressure (MPa) Thermal Efficiency (%) Coal consumption  (kg/h) Weight (t) Overall dimension L*W*H(m)
SZL4-1.25/1.6/2.5-AII 4 1.25/1.6/2.5 81 591 32 7.46×2.65×3.52
SZL6-1.25/1.6/2.5-AII 6 1.25/1.6/2.5 81 884 21 7×2.7×3.5
SZL10-1.25/1.6/2.5-AII 10 1.25/1.6/2.5 81 1443 28 7.89×3.26×3.53
SZL15-1.25/1.6/2.5-AII 15 1.25/1.6/2.5 82 2157 30 10×3.2×3.5
SZL20-1.25/1.6/2.5-AII 20 1.25/1.6/2.5 82 2866 35 11×3.2×3.5

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

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

Hot Water Boiler

Model

Rated Power(MW)

Working pressure(Mpa)

Supply water temp.(℃)

Return water temp.(℃)

Fuel consumption(kg/h)

Thermal efficiency(%)

SZL1.4-0.7/95/70-AII 1.4 0.7 95 70 ~300 80
SZL2.8-0.7/95/70-AII 2.8 0.7 95 70 ~590 80
SZL4.2-1.0/95/70-AII 4.2 1.0 95 70 ~880 80
SZL5.6-1.0/95/70-AII 5.6 1.0 95 70 ~1160 80
SZL7-1.0/95/70-AII 7 1.0 95 70 ~1450 80
SZL10.5-1.0/115/70-AII 10.5 1.0 115 70 ~2200 80
SZL14-1.0/115/70-AII 14 1.0 115 70 ~1160 80

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

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

Case

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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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