Moving Grate Coal Fired Steam Boiler
DZH Series coal fired steam boiler is single drum longitudinal type water and fire tube steam boiler,the combustion equipment is moving grate.The boiler mainframe in general configuration adopts the form of drum overhead and bilateral symmetry of water wall tube and header.The drum is installed and welded by boiler barrel and front & back tube plates.It has high burning efficiency due to the spark retaining wall located in the interior of furnace.
This series of boiler adopts latest scientific research achievements,such as arched tube plate, thread smokestacks, etc. It solves the problem of the pot shell type boiler tube plate cracking, pan cone lower speed bulge, water-cooled wall tube explosion, low thermal efficiency, insufficient of power and poor adaptability of coal.
Rated Capacity:
0.5~10t/h
Pressure:
<2.5 Mpa
Certificate:
ISO 9001, CE, BV, SGS, ASME
Fuel:
Different coal and biomass fuels
Boilers Structure
1. It uses arched tube plate and thread smokestacks constituted into the drum, reduces the stress.The fire tube inside of tube plate is single return instead of two-return, solves the problem of tube plate cracking.
2. The ascendable pipes are arranged at the bottom of drum,this makes the sludge deposit uneasy, prevents the drum bottom swelling.
3. The boiler aopts efficient heat transfer threaded pipes, strengthen heat transfer, and then heating-up and pressure boost -up quickly, the thermal efficiency increased.
4. Both wing wall and outlet widow inside of the furnace have the function of dust suppression, thus ensuring the soot discharge scratch the index stipulated by the State Environmental Protection.
Auxiliary equipment
Grate
The grate could be designed as moving grate, chain grate and reciprocating grate based on the fuel characteristics.
CONTROL SYSTEM
We use Siemens PLC and Schneider electrical components. can realize automatic interlock control to ensure boiler safe operate.
ECONOMIZER
The economizer adopts aluminum alloy fin tubes, its heating transfer area is 2-10 times larger than the bare tube, has a good heating transfer and mechanical property.
WATER PUMP
We adopts the stainless vertical pump with low noise, stainless impeller and pump body.
Steam header
Standard configuration: one inlet, three outlets, equipped with pressure gauge and thermometer. It can be designed according to customers' requirement.
Water softener
It is fully automatic and free debugging. We adopts PE material for salt tank body, it has hard texture and it is easy to move, anti-shock, and no leakage.
Quality
Zhongding Boiler pay more attention to the boiler quality from raw material to producing process.
Parameter
| Model Item | DZH0.5-0.7-AII DZH0.5-1.0-AII |
DZH1-0.7-AII DZH1-1.0-AII DZH1-1.25-AII |
DZH2-0.7-AII DZH2-1.0-AII DZH2-1.25-AII DZH2-1.6-AII |
DZH4-1.25-AII DZH4-1.6-AII |
| Rated evaporation capacity (t/h) |
0.5 | 1 | 2 | 4 |
| Working pressure(Mpa) |
0.7/1.0 | 0.7/1.0/1.25 | 0.7/1.0/1.25/1.6 | 1.25/1.6 |
| Rated steam temperature(℃) |
170/184 | 170/184/194 | 170/184/194/204 | 194/204 |
| Feed water temperature(℃) |
20 | 20 | 20 | 20 |
| Effective area of grate(m2) |
1.28 | 2.1 | 3.36 | 5.2 |
| Fuel consumption (Kg/h) |
76 | 150 | 301 | 602 |
| Exhaust flue gas temperature(C) |
165 | 165 | 165 | 165 |
| Thermal Efficiency (%) |
80 | 80 | 80 | 80 |
| Size(m) | 3.2x 2.0x 2.6 | 4.1x 2.2x 2.9 | 4.7x 2.3x 3.2 | 5.6x 2.5x 3.5 |
| Weight (t) | 8 | 12 | 15 | 22 |
| Note:Parameters is for reference only,please be subject to the actual drawing if any change. | ||||
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