Szl Type Multi Fuel Fired Steam Boiler

Description

SZL Series Steam Boiler Specification
SZL water tube easy installation(assembled) boiler has 2 vertical steam drums, and the
innovative horizontal cyclone-fired combustion chamber, which could effectively enhance
the thermal efficiency and reduce the flue gas emission concentration. The flue gas emission
concentration is lower than 100 mm/nm3, the flue gas blackness is lower than Ringelmann
level 1,which enables the boiler to be used in the first-class environment protected area.
The boiler installs one cast iron economizer at its back body, the fire-gate applies the
chamber-segregated ventilation structure, which is easy to adjust. The separate-layer coal
supply device could be chosen according to the customer requirement. Advantages of
such boiler are: strong power, high thermal efficiency, 110% override capability,
compactly designed, small floor area.

Boiler Model			SZL6-1.25/1.6/2.5-AII	SZL8-1.25/1.6/2.5-AII	SZL10-1.25/1.6/2.5-AII	SZL12-1.25/1.6/2.5-AII	SZL15-1.25/1.6/2.5-AII	SZL20-1.25/1.6/2.5-AII	SZL25-1.25/1.6/2.5-AII
Rated Evaporation Capacity		t/h	6	8	10	12	15	20	25
Operation Pressure		Mpa	1.25/1.6/2.5	1.25/1.6/2.5	1.25/1.6/2.5	1.25/1.6/2.5	1.25/1.6/2.5	1.25/1.6/2.5	1.25/1.6/2.5
Steam Temperature		ºC	194//204/226	194//204/226	194//204/226	194//204/226	194//204/226	194//204/226	194//204/226
Water-inlet Temperature		ºC	20	20	20	20	105	105	105
Heating Efficiency		%	≥78	≥78	≥80	≥80	≥81	≥81	≥81
Area of Boiler Heating Surface		m3	147.8	175	220	388	443	578	626
Area of Stoker		m3	7.6	9.6	11.72	14.2	17.2	22.6	26.3
Coal Available			II type bitumite,low heat capability:17700-21000KJ/kg
Water Pump	Model		2GC-5×6	2½GC-6×6	DG12-25×7	DG15-35×5	DG15-35×5	DG25-35×5	DG46×30
	Motor Power	KW	15/18.5	15/18.5	18.5/22	22/30	22/30	30/37	37/45
Blast Fan	Model		G6-41-13 NO7.1A	G6-41-13 NO8.5A	G6-41-13 NO8.5A	G6-41-13 NO8.5A	G6-41-13 NO8.5A	G6-73-11 NO11D	G4-68-10D
	Ventilation	m3/h	5349-10354	9369-18137	9369-18137	9369-18137	9369-18137	36100	33173- 58856
	Wind Pressure	Pa	1697-2270	2535-3391	2535-3391	2535-3391	2535-3391	2730	2313-3401
	Motor  Power	KW	7.5	18.5	18.5	18.5	18.5	37	45
Induced Draft Fan	Model		Y6-41-13 NO10C	Y6-41-13 NO11.2D	Y6-41-13 NO11.2D	Y6-41-13 NO11.2D	Y8-39-13 NO10D	GY20-15	Y4-68 NO12.5D
	Ventilation	m3/h	32144- 16604	41773- 21578	41773- 21578	41773- 21578	4500	73308	60611- 110772
	Wind Pressure	Pa	2575-3444	2764-3697	2764-3697	2764-3697	3205	3515	3765-2589
	Motor Power	KW	37	45	45	55	90	110	132
Dimensions of Biggest Parts for Shipment		M	7.83×3.34× 3.46	8.82×3.34× 3.46	8.0×3.5× 2.7	7.2×3.3× 3.6	8.0×3.3× 3.6	10.6×3.35×3.69	10.8×4.46×3.76
Weight of Biggest Parts for Shipment		T	48/51/53	56/58/60	96/97/98	102/103/104	107/108/109	152/154/156	210/212/214

Remark: This parameter is just for reference, for exact parameter, subject to our drawings.

Manufacturing Process Feature

1. Boiler material: seamless steel pipe
2. Welding process: Argon arc welding and radiographic testing
3. Bending shaping: The tube is shaped after the bending process in the pipe bending machine in order to ensure the coil outline dimension accuracy and ensure it meets GB/T17410 standards.
4. Water pressure testing: After shaping, the water pressure test for the tube is carried out before the boiler leaves the factory.

Features

1. There are different types of biomass fuel: Straw, rice straw, wood, palm shell, bark and other waste crops can be used as fuel. They are clean and environmentally friendly, feature a high combustion efficiency, and can be easily transported.
2. Compared to coal, natural gas, and oil, biomass fuel is not only less expensive, but also has superior characteristics for energy conservation, environmental protection and fuel regeneration.
3. We have an A grade manufacturing license, and the ASME production qualification S U stamp.

System Composition

The industrial boiler is a natural circulation boiler that is divided into 2 parts. The upper area is the boiler heated surface, with the lower part consisting of the grate. The end of the boiler is equipped with an economizer and air-preheating system. The boiler also features a water circulation system, flue gas system, ash system and blowing system.

1. Boiler heated surface
The boiler heated surface consists of the steam drum, water drum, header, water wall and convection tube bundle. The water drum is also outfitted with a sewage device.

2. Grate
The boiler uses a chain grate with wind blowing from the bottom. There are 6 independent wind chambers in the grate, which can be adjusted based on user combustion conditions in order to save electricity.

3. Economizer
The economizer is placed on the tail end of the boiler, and is used to recover residual heat from the flue gas. When the temperature of the exhaust gas is too high, the economizer will reduce the temperature and save fuel.

4. Air per-heater
The air pre-heater can heat the air before it enters the boiler, and thus, improve the boiler’s combustion efficiency.

5. Water circulation system
Water source-pump-economizer-drum-downcomer– water drum– riser tube– steam drum– steam outlet

6. Ash system
After fuel burning, the resulting ash will be discharged using a slag extractor at the end of the grate. Ash that isn’t quickly discharged will fall into the front ash bucket with the chain grate running. This means users do need to regularly clean the grate.