Active Member
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[China]
Address: Develop area,Taikang County,Zhoukou City,Henan PR,China
Contact name:Bettysun
Yong Xing Boiler Group Co.,Ltd |
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Automatic Coal Fired Boiler and Coal Boiler with Chain Grate Stoker Steam Boiler in China
Performance characteristics
1. The boiler thermal efficiency is above 77%, which is higher than
the standard of General Technical Conditions for Industrial
Boilers.
2. Quickly install the factory, after the use of the site, install
the valve instrument, drum, induced draft fan, smoke air duct, dust
collector and water circuit can run, and has the characteristics of
quick start fire.
3. Easy installation and movement can save a lot of infrastructure
investment.
4. Combustion coal type, low calorific value ≥17750J/Kg, volatile
matter>38.5%, and second-class bituminous coal with ash content
≤32.4%.
Pulverized coal burner structure classification
A pulverized coal burner is a device that feeds pulverized coal
into a furnace for combustion.
1. Swirling burner. The primary air carrying pulverized coal and
the secondary air without pulverized coal are connected to the
burner by different pipes. The pulverized coal and air can be
thoroughly mixed and form a recirculation zone. Each boiler can be
configured with 4 to 48 burners.
2. DC burner. The nozzle is narrow, and the primary and secondary
air do not rotate in the burner. The pulverized coal can be
completely burned therein.
The heated surface separates the heated surface from the heated
surface and the heated surface. Modern large and medium-sized
boilers are constructed of water-cooled walls, whereby the
water-cooled wall (ie, the heated surface) absorbs the radiant heat
in the furnace to evaporate the water into saturated steam. In
order to increase the radiant heating surface without increasing
the volume of the furnace, the large boiler can be double-exposed
water-cooled wall. The superheated heating surface can be divided
into a screen type superheater heating surface arranged on the
upper part of the furnace and a convection superheater heating
surface arranged in the convection flue. The former absorbs radiant
heat in the furnace; the latter absorbs convective heat.
The air preheater is installed at the tail of the boiler flue to
recover the residual heat of the flue gas and increase the
temperature of the combustion air. For high-parameter,
high-capacity boilers to increase hot air temperature (>300℃),
it is often necessary to stratify the air preheater and the
economizer.
Data sheet
| Model Item | DZL1-0.7-T DZL1-1.0-T DZL1-1.25-T | DZL2-0.7-T DZL2-1.0-T DZL2-1.25-T | DZL4-1.25-T DZL4-1.6-T | DZL6-1.25-T DZL6-1.6-T | DZL8-1.25-T DZL8-1.6-T | DZL10-1.25 DZL10-1.6 |
| Rated evaporation capacity (t/h) | 1 | 2 | 4 | 6 | 8 | 10 |
| Working pressure(Mpa) | 0.7/1.0/1.25 | 0.7/1.0/1.25 | 1.25/1.6 | 1.25/1.6 | 1.25/1.6 | 1.25/1.6 |
| Rated steam temperature(℃) | 170/184/194 | 170/184/194 | 194/204 | 194/204 | 194/204 | 194/204 |
| Feed water temperature(℃) | 20 | 20 | 20 | 20 | 20 | 20 |
| Effective area of grate(m2) | 2.22 | 4.1 | 5.85 | 7.95 | 9.75 | 10.77 |
| Fuel consumption (Kg/h) | 200 | 400 | 800 | 1200 | 1600 | 2010 |
| Exhaust flue gas temperature(C) | 150 | 150 | 150 | 150 | 150 | 150 |
| Thermal Efficiency (%) | 82 | 82 | 82 | 82 | 82 | 82 |
| Size(m) | 5.1x 2.2x 3.0 | 5.5x 2.3x 3.3 | 6.6x 2.6x 3.6 | 8.2x 2.9x 3.8 | 8.1x 3.1x 3.8 | 7.7x 3.2x 3.6 8.6x 3.0x 2.6 |
| Weight (t) | 17 | 23 | 25 | 35 | 45 | 33 28 |
| TWO PART ASSEMBLED BOILER | ||||||||
| boiler model | Unit | SZL6-1.25/1.6-AII | SZL8-1.25/1.6-AII | SZL10-1.25/1.6-AII | SZL12-1.25/1.6-AII | SZL15-1.25/1.6-AII | SZL20-1.25/1.6-AII | SZL25-1.25/1.6-AII |
| capacity | ton/h | 6 | 8 | 10 | 12 | 15 | 20 | 25 |
| rated pressure | Mpa | 12.5/1.6 | 1.25/1.6 | 1.25/1.6 | 1.25/1.6 | 1.25/1.6 | 1.25/1.6 | 1.25/1.6 |
| rated steam temeperature | ℃ | 193/204 | 193/204 | 193/204 | 193/204 | 193/204 | 193/204 | 193/204 |
| feed water temperature | ℃ | 105 | 105 | 105 | 105 | 105 | 105 | 105 |
| radiation area | m2 | 18.19 | 22.14 | 25.8 | 25.8 | 34.117 | 53.78 | 99.21 |
| convection area | m2 | 121.9 | 158.86 | 200.38 | 250.17 | 331.616 | 411.8 | 457.78 |
| economizer area | m2 | 53.13 | 104.64 | 130.8 | 174.4/261.1 | 117.72/117.2 | 212.4 | 476.16 |
| valid grate area | m2 | 7.55 | 9.34 | 10.98 | 12.78 | 16.24 | 20.84 | 24.76 |
| applicable fuel | COAL | COAL | COAL | COAL | COAL | COAL | COAL | |
| exhaust gas temperature | ℃ | 165.78/169.85 | 161/165 | 160/162 | 158/150 | 156.7/159.4 | 153/159 | 152/156 |
| design efficiency | % | 80.11/79.44 | 79.95/79.98 | 80.55/80.28 | 80.68/80.72 | 80.48/80.56 | 81.09/80.77 | 81.38/81.26 |
| fuel consumption | kg/h | 863.28/874.78 | 1153.42/1161.38 | 1430.96/1442.74 | 1714.5/1721.8 | 2167.89/2164.7 | 2868.63/2884.7 | 3551/3556 |
| max part size for delivery | mm | 7100*2800*3500 7300*2540*2330 | 7300*3000*3500 7400*2700*2330 | 7600*3200*3500 7700*2900*2330 | 7600*3200*3500 8500*2900*2330 | 7350*3373*3505 8904*3370*1100 | 7814.7*3573*3511 9439*3768*1100 | 8478*2600*2740 Bulk packing |
Description
The coal-fired steam boiler is a horizontal three-return hybrid
boiler in which a bundle of threaded tobacco pipes is arranged. A
light pipe water cooling wall is installed on the left and right
sides of the furnace. The movable grate is equipped with a blower
and an induced draft fan for mechanical ventilation.
Fuel combustion process: After the fuel is fully combusted in the
furnace, the flame enters the rear part of the body through the
flue gas passage of the intermediate furnace wall, and is turned to
the front smoke box by the combustion chambers on both sides, and
then the front smoke box is folded back into the inner tube bundle.
After entering the dust collector through the rear smoke box, it is
finally drawn by the induced draft fan through the flue to the
chimney and discharged to the atmosphere.
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