DHS Series Of Corner-tube Oil/gas Fired Hot Water Boiler

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seat: Beijing
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Last update: 2017-09-29 22:06
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Wuxi Shenneng Energy-Saving Boiler Co.,Ltd one of the leading China dhs series of corner-tube oil/gas fired hot water boiler manufacturers and suppliers, we are selling energy-saving and environmental dhs series of corner-tube oil/gas fired hot water boiler, corner-tube gas-fired hot water, corner-tube oil-fired hot water. Our top level China factory is able to produce cheap dhs series of corner-tube oil/gas fired hot water boiler with good quality. If you are looking for mainland or checking price, please feel free to contact us, we have products for sale, and you can also wholesale products from us.

Corner-tube Boiler

Corner tube boiler, refers to the composition of the boiler furnace radiation heating surface and the rear flue convection heating surface around are made of all-welded, fully enclosed membrane wall structure. Single drum (horizontal or vertical) is arranged outside the furnace from heat. The boiler body and its weight,including boiler drum, heating surface tubes, furnace wall insulation, steam water medium and other boiler working fluid rely on an"integral corner-tube stress framework " to support,consisting of its large diameter down pipe and horizontal header,namely self-supporting structure, and a separate steel frame for support or suspension is not needed, so it is called corner-tube boiler.

Corner tube boiler is of compact structure, small floor space, light weight, short installation period, unique water circulation structure, safe and reliable circulation,rapid start, good stability. It has full water pipe, all-welded, fully sealed structure, advanced design, beautiful appearance, high degree of automation, less pollution emissions, higher boiler thermal efficiency and other features. Corner tube boiler has now been included in the updated substitute product of industrial boilers by China,especially for the use of a variety of civilian central heating, industrial steam supply and other occasions.

Corner tube boiler Features:

No steel frame structure and good anti-seismicity: Corner tube boiler is in a self-supporting structure, without using a separate steel frame for support or suspension. It is of small total metal consumption, lighter overall weight, small floor space, low capital investment. Larger boiler adopts factory standardized production, has small amount of on-site installation work and short installation period.

Fully enclosed structure and good leakproofness: furnace and rear flue around use fully enclosed membrane wall, good all-welded construction and sealing performance, fundamentally eliminating the furnace wall air leakage phenomenon. It has low excess air coefficient, not only can reduce heat losses and draught fan energy consumption, environmental pollution in the boiler room is dramatically improved.

Optimized  heating surface and high thermal efficiency: The design and layout of furnace water wall membrane, composed by radiation heating surface is per fuel combustion flame power flow field, which has sufficient combustion and full flame, but also has a certain self-cleaning effect, which can effectively reduce boiler original dust concentration. Convection heating surfaces are made of smoke-speed pennant tube design layout, which has long flue gas flow length, low wear, sufficient heat exchange and high thermal efficiency.

Cladding tube furnace wall and good insulation: Membrane Water plus lightweight cladding tube holding furnace wall structure, the use of light weight ceramic fiber molding board has excellent insulation properties, effectively reducing the heat losses of the boiler and increasing thermal efficiency. boiler outside package is concave-convex surface, using removable molded panels, and with color layering embedded line, beautiful, strong and durable.

Safe and reliable unique water circulation: unique structure of water circulation structure, using a single drum auxiliary forced water circulation way, but also has the advantage of forced circulation and natural circulation. Boiler water wall all flow upwards, effectively preventing backflow and stagnation. External drum is away from heat, heated water flows in a single direction, water circulation is safe and reliable, with long service life.

Large water volume and power off protection: External drum is away from heat, coupled with large water volume of boiler drum, which can ensure no vaporize water during power outage, so the boiler has a reliable power off protection.

Flake type grate and efficient combustion: flake type grate, high precision casting, small assembly clearance, minimal coal leakage, less mechanical loss of incomplete combustion, grate replacement without shutdown. Plenum uses isobaric wind warehouse plus small damper structure, good sealing and uniform air distribution, flexible adjustment and less loss of incomplete combustion chemistry, high combustion efficiency.

Automatic control and easy operation: a fully equipped operating and monitoring instrumentation and alarm system, automatic monitoring of pressure throughout the water level, temperature, etc.,alarm chain of over-temperature, over-pressure, high and low water level, automatic adjustment and control of water supply, forced draft fan, induced draft fan and grate speed, easy to operate and manage, greatly reducing the labor intensity of fireman.

quick temperature rise and rapid response: Due to the compact structure, small size, light weight, fully sealed of corner tube boiler, no extra heavy burden on the furnace wall, etc., so the start, temperature and pressure rise of the boiler is fast, and load adjustment range is wide,response is fast, and no minimum load restrictions.


DHL series of corner-tube coal fired hot water boiler

Product description

DHL series of corner tube hot water boiler is horizontal layout of single drum, full membrane wall water tube chain grate boiler. Furnace radiant heating surface is encircled by surrounding membrane water wall. Convection heating surface consists of furnace exit channel,rear water wall and the flag-shaped heating surface among them. Single drum is heat insulated outside the furnace and self-supported by down tube and its connection header, no independent steel frame, so it’s called corner tube boiler.The boiler combustion equipment uses flake type grate,driven by stepless speed regulator. Air supply system uses big air warehouse isobaric air blowing plus small ventilation door adjustment structure. Also in the rear of the boiler is also provided air pre-heater, de-dusting device and induced draft fan and so on.

The boiler uses standardized production, fragmentation assembly ex-factory, with short on-site installation time, compact structure, clear and safe water circuit, external drum away from heat, plus the large water volume of drum to ensure no vaporization of water system during power outage, making the boiler has a reliable power off protection, wide range of applicable coal, high degree of automation, rapid start, fast heating, full output, and thermal efficiency.

Technical Parameters

boiler model

DHL14-

       1.6/130

       /70-AP

DHL29-

       1.6/130

       /70-AⅢ

DHL29-

       1.6/130

       /70-AⅢ

DHL29-

       1.6/130

       /70-AⅡ

DHL29-

       1.6/130

       /70-AⅢ

DHL29-

       1.6/130

       /70-AⅡ

DHL46-

       1.6n 30

       /70-AⅢ

DHL46-

       1.6/130

       /80-AⅢ

DHL46-

       1.6/130

       /70-AⅢ

DHL58-

       1.6/130

       /70-AⅡ

DHL70-

       1.6/130

       /70-AP

DHL91-

       1.6/130

       /70-AP

supplied heat

14

29

29

29

29

29

46

46

46

58

70

91

working pressure

       MPa

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

water outlet/return

       temperature℃

130/70

130/70

130/70

130/70

130/70

130/70

130/70

130/80

130/70

130/70

130/70

130/70

grate area

       m2

32

32

32

32

37

37

60

60

57

78

93

110

design efficiency

       %

82

82

82

80

82

80

82

82

82

83

84

84

applicable coal

soft coal、

       meager coal

III soft coal

       Vr>25%

III soft coal

II soft coal Vr=20%

       ~25%

III soft coal Vr>25%

II soft coal Vr>25%

III soft coal Vr>25%

III soft coal Vr>25%

III soft coal Vr>25%

II soft coal

 



       soft coal、

       meager coal



       soft coal、

       meager coal

Air preheater

Yes

Yes

Yes

Yes

No

Yes

No

No

No

No

No

No

Installation size(LXWXH)

12x8x13

14x9x13

15x9x13

14x10.5

       x13

12.2x9

       x13

14x10.5

       x13

12.2x13.2

       x15

12.2x13.2

       x15

13.6x11.6

       x15.8

17.5x13.5

       x15.6

14.2x15.2

       x15.6

15.3x16.2

       x16.6

 

F.D fan

G4-73-11

       7D

G4-73-1111D

G4-73-1111D

G4-73-1111D

G4-73-1110D

G4-73-1111D

G4-73-1118D

G4-73-1118D

G4-73-1118D

G4-73-1114D

G4-73-1118D

G4-73-1120D

air volume

29540

58570

58570

58570

52161

58570

117220

117220

117220

122560

141170

184450

air pressure

3840

3840

3840

3840

281 3

3840

2664

2664

2664

21 66

2474

2474

motor power

45

90

90

90

55

90

132

132

132

90

132

185

rotate speed

1450

1450

1450

1450

1450

1450

730

730

730

960

730

960

I.D fan

Y4-73-11

       14D

Y4-73-11

       14D

Y4-73-11

       14D

Y4-73-11

       14D

Y4-73-11

       14D

Y4-73-11

       14D

Y4-73-11

       20D

Y4-73-11

       20D

Y4-73-11

       20D

Y4-73-11

       20D

Y4-73-11

       20D

Y-35-3

       (2台)

air volume

50150

97777

97777

97777

97777

97777

211470

211470

211470

188730

254670

168800

air pressure

4008

4008

4008

4008

4008

4008

3545

3545

3545

3583

3290

3270

motor power

110

185

185

185

185

185

315

315

315

355

355

200

rotate speed

1450

1450

1450

1450

1450

1450

960

960

960

960

960

1450

Due to the continuous improvement of our products, all  the parameters listed in above chart are only for reference.

DHS series of corner-tube oil/gas fired hot water boiler
Product description
DHS series of  corner tube oil/gas fired hot water boiler uses whole membrane wall structure.  Membrane division wall segregates furnace and convection heating surface.Overall  structure is compact, corner tube self-supports, no body steel, total metal  consumption is small, tail part is arranged auxiliary heating surface,such as  air pre-heater. Burner is arranged at front wall, flue gas after combustion  passes through furnace water wall, convection tubes, air preheater, and then  discharges into the atmosphere through the chimney.

This series of boiler uses external single  drum auxiliary forced water circulation way, but also has the advantage of  forced circulation and natural circulation. Boiler water wall all flow upwards,  effectively preventing backflow and stagnation. The  boiler uses standardized production, fragmentation assembly ex-factory, with  short on-site installation time, compact structure, high degree of automation,  rapid start, fast heating, full output, and thermal efficiency.

Technical Parameters

boiler model

DHS46-1.25

       /130/70-YQ

DHS58-1.25

       /130/70-YQ

DHS70-1.25

       /130/70-YQ

DHS90-1.25

       /130/70-YQ

rated power

       (MW)

46

58

70

90

working pressure

       (MPa)

1.25

1.25

1.25

1.25

water outlet temperature

       (℃)

130

130

130

130

return water temperature

       (℃)

70

70

70

70

applicable fuel

light oil, natural gas

design efficiency

       (%)

≥90

≥90

≥90

≥90

maximum transportation dimension(m)

9.52x2x1.7

11.1x2x1.7

13.7x2x1.7

15.5x2x1.7

exhaust gas density

       (mg/Nm3)

<100

<100

<100

<100

exhaust gas blackness

<Ringelmann level 1

<Ringelmann level 1

<Ringelmann level 1

<Ringelmann level 1

Due to the continuous improvement of our products, all the parameters listed in  above chart are only for reference.

DHS46-1.25/130/70-YQ           DHS58-1.25/130/70-YQ   

DHS70-1.25/130/70-YQ           DHS90-1.25/130/70-YQ

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