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d type water tube boiler D-type Water Tube Oil & Gas Fired Boiler

Abstract: Wuxi Zozen Boilers Co.,Ltd is one of the best China d-type water tube oil & gas fired boiler manufacturers and suppliers and a China factory. We are selling cheap, if you are checking price, for sale, or mainland, please feel free to contact us. And we also welcome you to wholesale water tube d-type structure boiler, water pipe d arrangement boiler, water tube double-drum boiler from us, we are able to produce environmental and energy-saving products.
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Wuxi Zozen Boilers Co., Ltd is one of the best boiler manufacturers and suppliers inChina, producing environmental and energy-saving products. If you need our boiler products or services, please feel free to contact us. We also like to set up partnership if you are capable and interested for cooperation. 


D-type Water Tube Oil & Gas Fired Boiler

★ Boiler parameter range:

SZS2~65t/h,SZS7~70MW。

★ Technical characteristics:

This type of boiler is of double drum, vertical arrangement and “D” type furnace design with 1 or 2 burners located where the front wall stands. Inside it has an air-tight furnace structure with densely arranged tubes and air-proof casing. Outside it is covered with insulation materials and convex color plates. The flue gas takes a U turn. It goes into the 1st convection tube bank from the furnace, turns after passing the flue, and flows into the economizer with finned tubes when leaving the 2nd convection tube bank. The water which goes into the upper drum from the economizer is turned into steam by means of natural circulation after passing the convection tube bank and water cooled wall, and then supplied to the user via the main steam valve. Combustion at a slight positive pressure allows for a furnace volume heat release rate as large as nearly 40×103kcal.h/m3. Upper and lower drums and convection tube banks are assembled and subjected to a hydrostatic test prior to delivery. The steam boiler has a capacity of 2~75t/h and working pressure of 0.7~5.4Mpa, while the hot water boiler has a capacity of 0.7~21MW. The feedwater and return water temperatures are 95℃/70℃ and 115℃/70℃ respectively.

The boiler has the characteristics of small volume, compact structure, high combustion efficiency, convenient installation , high degree of automation, etc.

Adopting micro positive pressure combustion to improve the thermal efficiency and reduce the operation cost

Upper drum adopts Φ 1000 - Φ 1200 diameter to increase the separation height and guarantee the quality of steam

Boiler flue gas partition wall adopt seal membrance structure not only improve sealing and prevent short circuit  but also increase flue gas and improve the utilization ratio of steel and effectively reduce the size of our boiler.

holes are pre-opened on membrane wall baffles for timely inspection and repair. The inspection of convection tube banks is no longer a problem. 

Convection tube banks are assembled with special tooling/fixtures, and must pass a hydrostatic test prior to delivery. It not only reduces the installation workload, but also ensures the boiler quality.

The structure design of densely arranged tubes and membrane wall with finned tubes ensures that it would never go overheating outside the furnace tube wall, and the sealing would be maintained. The temperature of insulation and sealing steel plates would not go over 250℃, which ensures the sealing steel plates’ ability of oxidation corrosion resistance.

The design of internal seal casing and external embossed casing not only ensures good sealing, but also gives the boiler a better appearance

.

★ Technical Specifications of SZS Series Oil/Gas-fired Steam Boiler:

Parameter/Data

Model

Model

Model

SZS2-2.5-Y、Q

SZS4-2.5-Y、Q

SZS6-2.5-Y、Q

Rated evaporation capacity

t/h

2

4

6

Rated working pressure

MPa

2.5

2.5

2.5

Rated Steam temp.

°CC

226

226

226

Water feeding temp.

°CC

20

60

60

Boiler heating area

Radiate heating area

m2

13.5

20.28

30.25

Convection tube bundle

m2

30.2

66.5

103

Economizer

m2

32.7

43.6

104.64

Flue gas Temp.

°CC

164

162

165

Thermal efficiency of gas-fired boiler

%

≈93

≈93

≈93

Fuel available

/

Light oil/Heavy oil/Natural gas/Liquefied gas/City gas

Ringeiman blackness

/

< Class 1

< Class 1

< Class 1

Fuel consumption

Light oil

kg/h

126

252

378

Natural gas

Nm3/h

151

301

420

Overall dimension of boiler assembled(L*W*H)

m

8.5x3.5x4.7

10.5x3.5x4.7

12.5x3.5x4.7

Main steam value(DN )

mm

65

100

125

Water feeding pipe(DN )

mm

50

50

50

Parameter/Data

Model

Model

Model

★ SZS10-1.25-Y、Q
     SZS10-1.25/350-Y、Q

SZS15-1.6-Y、Q

★ SZS20-2.5-Y、Q
     SZS20-2.5/350-Y、Q

Rated evaporation capacity

t/h

10

15

20

Rated working pressure

MPa

1.25

1.6

2.5

Rated Steam temp.

°CC

194

204

226

Water feeding temp.

°CC

105

105

105

Boiler heating area

Radiate heating area

m2

38

50.24

70

Convection tube bundle

m2

154.1

193.25

350

Economizer

m2

52.32

136

378

Flue gas Temp.

°CC

165

160

168

Thermal efficiency of gas-fired boiler

%

≈93

≥93

≈93

Fuel available

/

Light oil/Heavy oil/Natural gas/Liquefied gas/City gas

Ringeiman blackness

/

< Class 1

< Class 1

< Class 1

Fuel consumption

Light oil

kg/h

630

930

1270

Natural gas

Nm3/h

700

1050

1406

Overall dimension of boiler assembled(L*W*H)

m

10x3.9x4.5

10.1x6.02x6.4

13x6.58x5.92

Main steam value(DN )

mm

150

150

150

Water feeding pipe(DN )

mm

50

65

80

Parameter/Data

Model

Model

Model

SZS25-2.5-Y、Q

SZS30-2.0-Y、Q

★ SZS35-1.6-Q
     SZS35-1.27/350-Y

Rated evaporation capacity

t/h

25

30

35

Rated working pressure

MPa

2.5

2

1.6

Rated Steam temp.

°CC

226

215

204

Water feeding temp.

°CC

105

105

105

Boiler heating area

Radiate heating area

m2

75

80.3

82.42

Convection tube bundle

m2

372

398

332.9

Economizer

m2

390

431

691.8

Flue gas Temp.

°CC

165

162

144

Thermal efficiency of gas-fired boiler

%

≈93

≈93

≥93

Fuel available

/

Light oil/Heavy oil/Natural gas/Liquefied gas/City gas

Ringeiman blackness

/

< Class 1

< Class 1

< Class 1

Fuel consumption

Light oil

kg/h

1575

1890

/

Natural gas

Nm3/h

1750

2150

2450

Overall dimension of boiler assembled(L*W*H)

m

11.25x6.76x6.33

12.56x7.92x6.35

16x5.54x6.35

Main steam value(DN )

mm

150

200

200

Water feeding pipe(DN )

mm

80

80

80

Parameter/Data

Model

Model

Model

SZS55-1.3/350-Q

★ SZS65-1.27-Q
     SZS65-2.5/400-Q

SZS75-1.6-Q

Rated evaporation capacity

t/h

55

65

75

Rated working pressure

MPa

1.3

1.27

1.6

Rated Steam temp.

°CC

350

194

204

Water feeding temp.

°CC

105

130

105

Boiler heating area

Radiate heating area

m2

118.5

135

150

Convection tube bundle

m2

420.5

495

566

Economizer

m2

780.6

865

950

Flue gas Temp.

°CC

150

156

158

Thermal efficiency of gas-fired boiler

%

≥93

≥93

≥93

Fuel available

/

Light oil/Heavy oil/Natural gas/Liquefied gas/City gas

Ringeiman blackness

/

< Class 1

< Class 1

< Class 1

Fuel consumption

Light oil

kg/h

/

/

/

Natural gas

Nm3/h

4235

4550

5158

Overall dimension of boiler assembled(L*W*H)

m

17.6x10.4x7.7

15.3x10x8.11

15.3x10.5x8.11

Main steam value(DN )

mm

250

300

300

Water feeding pipe(DN )

mm

100

125

125

Note: The data in the table are all for the boiler with mark ★.

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