China Boiler Furnace Steam Boiler

SZL series coal-fired steam boilerSteamProduct thermal capacity:4-35 t/hWorking pressure:1.0-2.5 MPAOutlet temperature:184-350 ºCAvailable fuel:Bituminous coal, lean coal, anthraciteAvailable industries:Heating, chemical, food, tobacco, textile, print and dyeing, feed, medicine, building materials, wine, hospital

1. Who am I ?I am a coal-fired horizontal double-drum steam boiler.
I am produced as the following steps:
2. What uniqure features do I have ?2.1 After simplifying the water-cycle route, we can reduce the water-cycle resistance, raise ascending tube velocity, improve the stability of the water cycle and ensure a safe and stable operation.2.2 Design enough heating surface, which makes more heat from fuel absorbed. Flue smoke temperature can be lower than 170ºC.2,3 Reasonably design front and back arch to improve the temperature in the furnace. We also strengthen the disturbance of smoke in the high temperature area. These reduce heat lose and fly ash loss as a result of incomplete combustion.2.4 We adopt light chain grate and independent air chamber. We strengthen the seal airtight of the two sides of chain grates. These make the fuel burn fast and fully.2.5 Our boiler have a large convection heating surface, a stable performance and even a long time overload work. What's more, we design the convection tube bundles in alternate permutation instead of in line arrangement. All of these designs make our boilers obtain a higher heat efficiency than normal, up to 81%.
2.6 We design double side air inlet and independent air plenum. And at the exit of furnace, we set up a smoke separation device by inertia, which makes the original discharging dust concentration lower than 1800 mg/Nm3. Our high efficiency dust collector makes sure the dust removal efficiency up t0 90%, SOX and NOX removal efficiency up to 98%. These measures can meet the global demands and standards of environmental protection.
2.7 Compact structures aHeater & Heat Exchanger re designed, except the 4t/h and 6 t/h packaged steam boiler. That can save boiler house and reduce the installation workload and time.2.8 We enlarge the diameter of steam drum to supply a big space of water-steam separation device. So that we can offer steam in good quality.2.9 High automatization, safe and easy operation. In the electrical control cabinet, we design automatic feediTransmitter ng water, alarm and safety interlock of high/low water level, air blower and draft fan.3. What are my control and safety systems?3.1 The control and safety systems are interlocked in an electric control cabinet.3.2 Alarm system
3.2.1 Sound-light alarm of high and super-high steam pressure;
3.2.2 Sound-light alarm of high and lowe water limit level;
3.2.3 Sound-light alarm of pressure loss in the water pumps;
3.2.4 More safety devices are designed and connected with the electric control cabinet (ECC). More details will be explained in the ECC Manual.6. Where is my home?

Model

Rated evaporation(t/h)

Rated working pressure(MPa

Rated steam temperature

Thermal efficiency(%)

SZL4-1.25-AII

4

1.25

194

82.8

SZL4-1.60-AII

4

1.6

204

82.8

SZL4-2.45-AII

4

2.45

225

82.8

SZL6-1.25-AII

6

1.25

194

82.8

SZL6-1.60-AII

6

1.6

204

82.8

SZL6-2.45-AII

6

2.45

225

82.8

SZL8-1.25-AII

8

1.25

194

83.2

SZL8-1.60-AII

8

1.6

204

83.2

SZL8-2.45-AII

8

2.45

225

83.2

SZL10-1.25-AII

10

1.25

194

83.2

SZL10-1.60-AII

10

1.6

204

83.2

SZL10-2.45-AII

10

2.45

225

83.2

SZL20-1.25-AII

20

1.25

194

85.8

SZL20-1.60-AII

20

1.6

204

85.8

SZL20-2.45-AII

20

2.45

225

85.8

SZL30-1.25-AII

30

1.25

194

86

SZL30-1.60-AII

30

1.6

204

86

SZL30-2.45-AII

30

2.45

22 5

86

SZL35-1.25-AII

35

1.25

194

82.8

SZL35-1.60-AII

35

1.6

204

82.8

SZL35-2.45-AII

35

2.45

225

82.8