Fully Automatic Coal Fired Hot Water Furnace Pressure Adjustment System
Description
The three return process is briefly described as follows: the biomass pellet fuel falls from the coal hopper to the grate, and after entering the furnace, the flue gas passes through the rear arch to enter the tail of the boiler (the first return journey), and the tail of the boiler passes through the convection flue before entering the boiler. The second (return), then enters the rear smoke box through the threaded pipe bundle (third return), and finally enters the economizer. The dust collector is drawn by the induced draft fan and discharged to the atmosphere through the chimney.
Boiler fuel: waste wood, straw, bagasse, palm shell, biomass pellets, etc.
Combustion method: circulating fluidized bed, water-cooled vibrating grate, reciprocating grate, chain grate, (water-cooled) fixed grate, lower servo, etc.
Features
1. DZL type coal-fired steam boiler is a horizontal quick-install boiler, and the water circulation mode is natural circulation. The boiler heat exchange system is composed of a drum, a left and right header, and a water-cooled wall, and the main heating surface is designed to install a furnace water wall. In addition, the main heating section of the boiler is made of seamless steel pipe for 20# low and medium pressure boiler, and the drum is made of special steel plate for boiler. The left and right headers are made of seamless steel tubes.
2. The boiler shaft is made of refractory concrete. The rear arch is low and long, so the combustion effect is good. The two-wing flue and the side wall brick are made of refractory sintered brick. General refractory bricks are used for the front and rear walls of the boiler.
3. The grate has a reasonable air distribution, the combustion chamber is large, and the coal type has strong applicability. Adapt to all types of bituminous or anthracite, mixed coal. The fuel is fully burned. Since the high-temperature flue gas will enter the settling chamber and then enter the flue from both sides, the exhaust and dust removal effect of the equipment is very good.
4. The combustion equipment uses a light chain grate. Double side air intake mode. There are six independent air chambers under the grate. There are air conditioning mechanisms on both sides of the air chamber. The air enters the lower part of the base by the air blower, and then enters the independent air chamber through the air conditioner.
5. The upper furnace wall is assembled and factoryized by the factory. The lower furnace wall is composed of refractory bricks, silicate fiber and thermal insulation material. The fuel enters the furnace through the gate, and the coal slag falls into the slag hopper during the operation of the grate. Finally discharged by the spiral slag machine.
6. Pressure automatic adjustment system. The boiler steam pressure automatic adjustment system can stably control the pressure of the boiler. The system works normally when the conditions of combustion are met. Once the steam pressure in the boiler is above the set upper pressure limit, the control system outputs a stop signal until the steam pressure returns to normal.
7. High degree of automation: digital integrated controller, which can set the automatic combustion condition of the controller according to the user. The operation is simple and convenient, automatic ignition, automatic feeding, automatic cleaning, and gas boiler operation is equally convenient.
Data Sheet
| DZL 1-8 t Coal Fired Steam Boiler Technical Paraments |
| Paraments | DZL1-A II | DZL2-A II | DZL 4-A II | DZL8-A II |
| Rated evaporation capacity (T) | 1 | 2 | 4 | 8 |
| Rated working pressure (MPa) | 0.7/1.0/1.25 | 0.7/1.0/1.25 | 1.25/1.6 | 1.25/1.6 |
| Rated steam temperature (℃) | 170/184/194 | 170/184/194 | 194/204 | 194/204 |
| Water-supply temperature(℃) | 20 | 20 | 20 | 20 |
| Boiler heating area (㎡) | 57.47 | 89.4 | 124.9 | 432.22 |
| Grate area (㎡) | 2.7 | 3.45 | 5.9 | 10.81 |
| Exhaust flue gas temperature (℃) | 120.7 | 157 | 167 | 163.41 |
| Thermal Efficiency (%) | 80.42 | 78.4 | 79.7 | 79.36 |
| Size (m) | 5.27*2.5*3.15 | 5.4*2.4*3.48 | 6.18*2.95*3.35 | 9.05*3.2*4.3 |
| Consumption (kg/h) | 155 | 306 | 611 | 1153 |
Induced Draft
Fan | Model | Y9-19-6.3C | GY2-15 | Y6-41-7.1C | Y9-26-10D |
| Power(KW) | 5.5 | 11 | 18.5 | 45 |
Forced Draft
Fan | Model | 4-72-3.3A | GG1-15 | G6-41-6.4A | 4-72-5A |
| Power(KW) | 2.2 | 3 | 5.5 | 15 |
| Water Pump | Model | 1W2.4-10.5 | 11/2GC-5*7 | 11/2GC-5*7 | 2GC-5*6 |
| Power(KW) | 3 | 7.5 | 7.5 | 18.5 |
Grate Governor
Box | Model | WT-4 | WT-5 | WT-6 | WT-10 |
| Power(KW) | 0.55 | 0.55 | 0.55 | 1.1 |
| Slag Remover | Model | GBC-1 | GBC-2 | GBC-4 | GBC-8 |
| Power(KW) | 1.1 | 1.1 | 1.1 | 1.5 |
| Coal Conveyor | Model | FS-1 | FS-2 | FS-4 | FS-8 |
| Power(KW) | 1.1 | 1.1 | 1.1 | 1.5 |
Detail Picture
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