Product Details

8 ton DZL coal fired steam boiler biomass wood sawdust steam boiler for Textile Mill

DZL type horizontal biomass steam boiler

Specification model: 1 -- 20 tons

Thermal efficiency: 85%

Applicable fuel: biomass pellet

Application: medicine, chemical industry, light industry, textile, building materials, breeding, food and beverage, plastic foam, printing washing, rubber processing, paper making, wood processing, hotels, hotels, clothing, etc

The new type of environmental protection DZL type horizontal chain - fired coal fired steam boiler is a horizontal three - return water - fire tube boiler.Two fire tubes are arranged in the pot barrel, and both sides of the furnace chamber are equipped with light tubes and water wall tubes.The combustion equipment adopts light chain grate to realize mechanical addition of biomass, and is equipped with drum and induced draft fan to realize mechanical ventilation.The fuel falls on the grate from the biomass bucket and burns along with the grate, and the flue gas passes through the upper combustion chamber of the rear arch, enters the first bundle to the front smoke box through the upper smoke chamber of the back shed pipe, folds into the second bundle to the back smoke box from the front smoke box, and is introduced into the flue, dust collector and chimney through the induced draft fan, and finally exhausts to the atmosphere.The boiler automation level is high, the boiler feed water automatic regulation, high and low water level alarm, low water level interlock protection, lead, fan interlock protection.Boiler biomass, slag and other operation mechanization, reduce the labor intensity of workers, supporting a complete set of auxiliary machines.

Performance advantage

Features of automatic control and fault protection

Boiler steam pressure automatic regulation system

When the control system of the boiler steam pressure automatic regulation system enters the working state, when the necessary conditions for combustion are satisfied:

When the steam pressure in the pot is higher than or equal to the set upper limit of pressure, the control system outputs the stop signal.Until it stops burning.

2 Feed water control:

When the system is working and normal, start the feed pump, the water pump is working, and the water level differential pressure transmitter detects the water level signal to keep the water level of the pot stable.Ensure the quality of steam.

The water level regulating instrument shows the boiler water level.

3. Manual control: The water pump can also be manually controlled by touching the key on the control panel.

Fault alarm and protection

The control system can monitor the current working condition of the gas-steam boiler in real time and carry out real-time and comprehensive intelligent fault identification and treatment.The control system can diagnose and deal with the following faults in real time:

1. Protection of extremely high steam pressure: When the steam in the pot is overpressured, the control system will immediately enter the chain, and sound and light alarm will be given, and the screen will display "extremely high steam pressure".After the fault is eliminated, press the reset button to break the chain.

2. Water shortage protection in the boiler: in case of extremely low water level failure due to pump failure or other reasons, the control system will immediately shut down the burner's power supply, enter the chain, and alarm with sound and light, and the screen will display extremely low water level.After the fault is eliminated, press the reset button to break the chain.

Ultra high boiler water level: when the water level in the pot is higher than the upper warning level, sound and light alarm will be given.Prompt "ultra high limit of water level in the pot", the display screen prompt drainage.Automatic recovery after the fault is eliminated, stop the pump without stopping the furnace.

4. Overload of water pump motor: heat relay action when the water pump motor is over current, cut off the power supply of the water pump motor, and stop the water pump, which is realized by hardware.

Power failure: In case of power failure, the control system will immediately shut down the power supply of all equipment in the cabinet where power failure occurs.When the power is restored, the cabinet will be in the off-duty state automatically. It is necessary to restart the machine and start the equipment to ensure the safety of the equipment

Technical Parameters

Model Item		DZL1	DZL2	DZL4	DZL6	DZL8	DZL10 (Assembly)	DZL15 (Assembly)	DZL20 (Assembly)
Steam Capacity (t/h)		1	2	4	6	8	10	15	20
Steam Pressure (MPa)		0.7/1.0/1.25		1.25/1.6
Steam Temperature (℃)		170/184/194		194/204
Feed water Temperature(℃)		20	20	20	20	20	70	70	70
Heating Area(m2)	Body	~33	~50	~100	~170	~200	~250	316	502
Heating Area(m2)	Econom izer	10.56/20.7	27.6	52.48/33.12	87.2	98	174	351	382
Effective Grate Area(m2)		2.22	2.22	4.1	5.5	7.95	9.75	11.1	23.9
Fuel Type		II Bituminous Coal, Lower Heating Value Q≈21000KJ/Kg
Fuel Consumption(kg/h)		~151	~302	~600	~880	~1150	~1450	~2220	~1160
Exhaust Gas Temperature(℃)		135-145
Thermal Efficiency(%)		83-85
Weight of Biggest Part for Transportation(t)		17	23	25	35	45	33(Up Part) 28(Down Part)	42(Up Part) 35(Down Part)	50(Up Part) 28(Down Part)
Overall Dimension of Boiler Assembled LWH(m)		5.1×2.2×3	5.5×2.3×3.3	6.6×2.6×3.6	7.5×2.9×3.8	8.1×3.1×3.8	7.7×3.2×3.6 8.6×3.0×2.6	10×3.24×3.54 12×3.2×3.08	11×3.24×3.54 14×3.2×3.08

steam boiler accessory

steam boiler water level control

boiler steam globe gate valve

pressure switch for steam boilers

water flow control for steam boiler

boiler steam globe gate valve

water level sensor for steam boilers

Application scope

The coal fired steam boiler is used for producing desired steam for product manufacturing process in the weave factory, printing and dyeing, papermaking and other industry like: food, rubber, plastic, chemical, pharmaceutical, etc, and for heating room and bath in factories, departments, hotels, schools, restaurants, services industries etc.

FAQ

1.What is the size of furnace door and blower hopper?

Size of furnace door:
Standard elliptical furnace door:300*800*1500
Blower hopper size:
2 tons conical hopper: 1400*800*1500
4 tons conical hopper: 2200*1400*1500

2.What is the combustion mode of coal/biomass fired boiler?

The combustion mode of coal/biomass fired boiler is layer combustion. Place the flue on the fixed or moved grate, to form an evenly fuel bed with a certain thickness, air comes from the bottom of grate, and combustion occurred on the fuel bed.

3.Material of boiler drum / steel plate / tube.

Boiler drum material: Q245R,carbon steel, executive standard: GB713-2008
Tube material: 20# seamless steel pipe, carbon steel, executive standard: GB3087-2008
Still kettle material: Q345R, alloy steel, executive standard: GB713-2008

4.What is the height of chimney?

The chimney is usually 30m, irrespective of the special circumstances.

5.What are the heat-resistance temperature of grate and furnace?

The heat resistance temperature of grate is related to the grate material, the highest temperature could be as high as 1100℃, and the lower temperature could be 700℃.