• HXGL-1
  • HXGL-2
  • HXGL-3

coal & biomass fired hot water boiler

Short Description:


Product Detail

Product Tags

Features

1. The drum is composed of arched tube sheet and threaded smoke tube. The pot shell is changed from quasi-rigidity to quasi-elasticity to prevent cracks in the tube sheet. Compared with the flat tube sheet, the arched tube sheet has better deformability, which reduces the damage of the tube sheet caused by the thermal expansion and contraction of the pipeline.
2. There is a baffle plate in the boiler header, which increases the heat exchange time of the hot water in the convection tube bundle and further improves the thermal efficiency.
3. The use of backwater jets and the elimination of the front drop tube improves the reliability of the water circulation and prevents the occurrence of tube bursts due to poor water circulation.
4. The use of threaded smoke tube in the heat exchange tube in the drum can not only increase the heat exchange area, but also the flue gas spirally advances in the smoke tube to prevent the accumulation of dust.
5. The length of the back arch of the furnace is lengthened to further improve the combustion conditions and make the applicability of the boiler to fuel more extensive.

DZL hot water boiler

Technical Parameter

The technical parameter table of the DZL series hot water boiler boilers

Boiler Model

DZL0.7-0.7/95/70 -AII

DZL1.4-0.7/95/70 -AII

DZL2.8-1.0/95/70 -AII

DZL4.2-1.0/95/70 -AII

DZL5.6-1.0/95/70 -AII

DZL7.0-1.0/95/70 -AII

Rated Thermal Power (MW)

0.7

1.4

2.8

4.2

5.6

7.0

Rated Outlet Pressure
(MPa)

0.7

0.7

1.0

1.0

1.0

1.0

Rated Outlet Water Temperature  (℃)

95

95

95

95

95

95

Rated Inlet Water Temperature (℃)

70

70

70

70

70

70

Heating  Area (㎡)

23.6

43.1

95.6

146.8

175.5

236.09

Active grate area  (m2)

2

3.6

5.29

7.4

9.2

12.7

Applicable Coal

Class II Bituminous Coal

Coal Consumption (kg/h)

220.5

418.3

866.2

1301.5

1712.5

2132.8

Exhaust gas   Temperature (℃)

143

145

146

130

128

132

Design Efficiency (%)

82.5

82.5

82.6

83.5

84.6

85.2

Maximum part Transport Weight (t)

15

19

30.5

28(TOP)

7.5(BOTTOM)

32(TOP)

11(BOTTOM)

40(TOP) 

32(BOTTOM)

Maximum  part Transport Dimensions
(m)

4.6×2.45×2.8

5.3×2.6×3.17

6.4×2.93×3.41

6.25×3.1×3.53

6.6×2.53×1.72

6.5×3.1×3.53 

7.08×2.7×1.72

6.7×3.67×3.59 

8.2×3.25×2.15

Installation Overall Dimensions(m)

4.7×3.35×3.4

5.3×4.0×4.2

 6.4×4.5×4.5

7.2×6.6×5.03

9.4×5.8×6.1

11×5.8×6.8

Faq

1. Are the manufacturing standards and testing methods of steam boilers and hot water boilers the same?

The manufacturing standards and testing methods of hot water boilers are the same as those of steam boilers, and both must pass radiographic flaw detection and hydraulic test.

2. What is the design pressure and outlet temperature of the hot water boiler?

The design pressure of a conventional hot water boiler is generally between 0.7Mpa-1.6Mpa, the outlet water temperature is 95°C, and the return water temperature is 70°C (the temperature difference between the outlet and return water temperature is between 20-30°C, and the boiler is in the best operating state)

3. How to select the hot water boiler?

The heating area of the 0.7mw hot water boiler is not less than 6000 square meters, and the hourly hot water circulation is not less than 24 cubic meters.


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