The new type of DZL series steam boiler is a single drum-type
boiler with water-fired tube shell, and the combustion equipment is
a chain grate. The water wall on the left and right sides of the
furnace is a radiative heating surface, the lower part of the
boiler tube adopts a new technology of cross arrangement, the two
wings of the furnace are convection heating surface, and a threaded
flue pipe (57 × 3) convection heating surface is arranged in the
pot tube. The heat-resistant concrete is adopted in the furnace
wall, and the outer part of the boiler is a three-dimensional guard
shell.
The boiler body adopts the form of upper drum, water-cooled wall
tube and header left-right symmetrical arrangement, and the lower
water-wall tube of boiler adopts the new technology of cross
arrangement. The drum consists of 1600 × 14 tubes and 1600 × 14
front and rear tube plates. The water cooling wall tube is a 57 × 3
boiler tube, the header is a 159x6 boiler tube, and the falling
tube is a 133x6 boiler tube. There are front and back arches in the
furnace of this boiler, and the combustion efficiency is high.
Product Features
1. Installation convenience:
The boiler is generally fast-loading factory, easy to transport and
on-site installation, greatly shorten the construction cycle, save
installation costs, so that the boiler can be put into production
in time.
2. Reliable operation:
Boiler heating surface layout is reasonable, water circulation is
smooth, and each heating surface is cooled in time, so as to
effectively ensure the safe operation of the boiler.
3. Maintenance and repair convenience:
Boiler drum set up manhole, can enter inspection repair. It is
convenient to open the smoke box in front of the boiler, and the
personnel can check it easily and clearly, which provides a good
condition for correct treatment.
4. Full combustion:
With the secondary air and reasonable furnace design, the fuel can
be fully burned and the black smoke can be eliminated.
5. High efficiency grate:
Boiler grate adopts double side ventilation, which is brought
naturally to the front end of boiler row by dust cleaning
technology, which avoids air leakage, fuel leakage and uneven
ventilation, and is easy to operate, and has obvious advantages
compared with ordinary grate.
6. Convenient ash cleaning:
Many ash cleaning holes can be set up on the boiler, which can
remove ash in time and effectively, avoid the trouble of operation
and decrease of thermal efficiency caused by boiler ash
accumulation, and ensure the stability of boiler load.
Technical Parameters
Main Technical Parameters of DZL Series Biomass Hot Water Boiler
| Item | Unit | DZL0.7 | DZL1.4 | DZL2.1 | DZL2.8 | DZL4.2 | DZL5.6 | DZL7 |
| Thermal Power | MW | 0.7 | 1.4 | 2.1 | 2.8 | 4.2 | 5.6 | 7 |
| Outlet Pressure | MPa | 1.0 | 1.0 | 1.0 | 1.0 | 1.0/1.25 | 1.0/1.25 | 1.0/1.25 |
| Outlet Temperature | ℃ | 95 | 95 | 95 | 95 | 95/115 | 95/115 | 95/115 |
| Feed Water Temperature | ℃ | 70 | 70 | 70 | 70 | 70 | 70 | 70 |
| Thermal Efficiency | / | ≥83% |
| Fuel | / | Biomass particles |
| Fuel Consumption | Kg/h | 174.3 | 348.6 | 517 | 687.2 | 1024 | 1374.3 | 1708 |
| Heating area | m2 | 35.2 | 79.8 | 114.2 | 168 | 207.6 | 300.5 | 391 |
| Grate area | m2 | 1.97 | 3.2 | 4.8 | 5.5 | 7.04 | 11.7 | 13.6 |
| Power consumption | Kw | 18 | 26 | 31.5 | 34 | 62.4 | 76.4 | 87.2 |
| water volume | m3 | 5.1 | 5.58 | 6.95 | 9.3 | 14 | 17.8 | 20.5 |
Note: the fuel consumption in the table is calculated on the basis of
the low calorific value of biomass particles 17084KJ/Kg
(4085Kcal/Kg). If the low calorific value of biomass fuel is larger
than this value, the corresponding fuel consumption will be more
economical than the value in the table.
External and Interface Dimension of DZL Biomass hot water boiler
| Item | Unit | DZL0.7 | DZL1.4 | DZL2.1 | DZL2.8 | DZL4.2 | DZL5.6 | DZL7 |
| Thermal Power | MW | 0.7 | 1.4 | 2.1 | 2.8 | 4.2 | 5.6 | 7 |
Transport Dimension
| L | mm | 5100 | 6140 | 6330 | 6880 | 7290 | 7800 | 8500 |
| W | mm | 2200 | 2600 | 2700 | 2700 | 3190 | 3400 | 3400 |
| H | mm | 2900 | 3300 | 3300 | 3300 | 3700 | 3700 | 3700 |
| Mainframe Transport Weight | / | t | 15 | 18 | 24 | 27 | 31 | 33 | 41 |
| Outlet Water Valve | DN | mm | 80 | 100 | 125 | 125 | 150 | 200 | 200 |
| Feed Water Valve | DN | mm | 80 | 100 | 125 | 125 | 150 | 200 | 200 |
| Safety Valve Diameter | DN | mm | 1*32 | 1*50 | 2*40 | 2*40 | 2*50 | 2*50 | 2*50/80 |
| Drain Valve Pipe Diameter | DN | mm | 3*40 | 3*40 | 3*40 | 3*40 | 3*40 | 3*40 | 3*40 |
| Chimney Diameter | φ | mm | 280 | 350 | 410 | 410 | 530 | 720 | 750 |
Remarks: We will reserve rights to change the above mentioned data due to
continuous policy transformation and product improvement.
