80% Thermal Efficiency1 Coal and Wood Fired Steam Boiler

Model No.: DZL

Drum Placement: Horizontal Boiler

Pressure: High Pressure

Manufacturing Level: A

Burning Style: Chamber Combustion Boiler

Usage: Industrial

Trademark: XF

Transport Package: Sea-worthy

Specification: 0.5, 1, 2, 3, 4, 6, 8, 10, 15, 20 T/H

Origin: China

HS Code: 8402190000
Product Description

Industrial Chain Grate Coal Fired Steam Boiler

The DZL series of quickly installed coal-fired steam boilers is one of the most advanced water-tube boilers in the Chinese market. Designed for high efficiency and long service life, this boiler is ideal for use in textile, food, and packaging industries. Its compact design and quick installation make it a cost-effective solution that saves on civil engineering and investment costs.

This improved coal-fired steam boiler incorporates advanced technologies such as wing-shaped flue ducts, single-pass spiral flue tubes, arched tube plates, and separate smoke and gas chambers. These features enhance water circulation and improve safety. The DZL series is well-structured, compact, and easy to install, making it a reliable choice for industrial applications. With these enhancements, the boiler has significantly extended its working life and is recognized as an energy-efficient product by national standards.

Boilers with capacities from 1 to 6 T/H are usually shipped as a single unit, while those with a capacity of 8 T/H (including 8 T/H) are transported in two parts: upper and lower sections (chain grate).

SPECIFICATIONS FOR DZL COAL FIRED STEAM BOILER

Boiler basic parameter Steam capacity T/h 1, 2, 4, 6, 8, 10, 12, 15, 20

Steam temperature ÂºC 170, 184, 194, 204, 226

Fuel Â Coal

Boiler performance Working pressure Mpa 0.7, 1.0, 1.25, 2.6

Thermal efficiency % 78----82

Feed water temperature ÂºC 20, 105

Boiler performance Grate heat area M2 1.5---23.15

Fuel consumption Kg/T(steam) 120

Boiler transportation weight T 16---31

Â Â Â Â Boiler model

Item Â DZL2-0.7
/1.25/1.6-AII DZL4-1.25
/1.6/2.5-AII DZL6-1.25
/1.6/2.5-AII DZL8-1.25
/1.6/2.5-AII DZL10-1.25
/1.6/2.5-AII DZL20-1.25
/1.6/2.5-AII

Steam capacity T/h Â Â Â Â Â 2 Â Â Â Â Â 4 Â Â Â Â Â 6 Â Â Â Â Â Â 8 Â Â Â Â Â 10 Â Â Â Â Â 20

Working pressure Mpa 0.7/1.25/ Â Â Â 1.6 1.25/1.6/ Â Â Â Â 2.5 1.25/1.6/ Â Â Â Â Â Â 2.5 1.25/1.6/ Â Â Â Â Â Â 2.5 1.25/1.6/ Â Â Â Â Â Â 2.5 1.25/1.6/ Â Â Â Â Â 2.5

Steam temp. ÂºC 170/194/ Â Â Â 204 194/206/ Â Â Â 226 194/206/ Â Â Â Â Â 226 194/206/ Â Â Â Â Â 226 194/206/ Â Â Â Â Â 226 194/206/ Â Â Â Â Â Â 226

Feed water temp. ÂºC Â Â Â Â 20 Â Â Â Â Â 20 Â Â Â Â 20 Â Â Â Â 105 Â Â Â Â 105 Â Â Â Â 105

Thermal efficiency % Â Â Â Â 78 Â Â Â Â 78 Â Â Â Â Â 80 Â Â Â Â Â 80 Â Â Â Â Â 80 Â Â Â Â 82

Grate heat area M2 Â Â Â Â 3.2 Â Â Â 5.14 Â Â Â Â Â 7.4 Â Â Â Â Â 9.6 Â Â Â Â 11.4 Â Â Â 23.15

Coal available Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â II type bituminous, low heat capability:17700-21000KJ/kg

Water pump Model Â 1Â½GC5Ã—7 1Â½GC5Ã—7 2GC-5Ã—6 2Â½GC6Ã—6 DG12Ã—7 DG25-35Ã—5

Motor power Kw Â Â 7.5/11 7.5/11/ Â Â Â Â Â 18.5 15/18.5 15/18.5 18.5/22 30/37

Blast fan Model Â G6-41-13
NO5.4A G6-41-13
NO6.4A G6-41-13
NO7.1A G6-41-13
NO8.5A G6-41-13
NO8.5A TG20-1

Ventilation M3/h 4358-2310 7358-3596 10354-5394 18137-9369 18137-9367 32079

Wind pressure

Pa

994-1254 1181-1436

1697-2270

2535-3391

2535-3391

2559

Motor power Kw Â Â Â Â Â 3 Â Â Â 5.5 Â Â Â Â 7.5 Â Â Â Â 18.5 Â Â Â Â 18.5 Â Â Â Â 37

Induced draft fan Â Â Â Model Â Y6-41-13
NO5.4C Y6-41-13
NO7.1C 1Y6-41-13
NO10C Y6-41-13
NO11.2D Y6-41-13
NO11.2D GY20-15

Ventilation M3/h 8901-4350 15219-8171 32144-16607 41773-21578 41773-21578 73308

Wind pressure

Pa 2568-3240 2454-3283

2574-3444

2764-3697

2764-3697

3515

Motor power Kw Â Â Â 11 Â Â Â Â 22 Â Â Â Â Â Â 37 Â Â Â Â Â 45 Â Â Â Â 55 Â Â Â Â 110

Maximum size for shipment M 5.82Ã—2.1Ã—3.2 6.5Ã—2.66Ã—3.52 6.7Ã—3Ã—
3.54 8.0Ã—3.2Ã—
3.58 8.45Ã—3.2Ã—3.58 10Ã—4.8Ã—
3.55

Maximum weight for shipment T 18/19/20 27/29/31 32/33/34 42/43/44 45/47/49 30/31/32

Certifications
The 1â€“20T coal-fired steam boiler meets international standards such as CE, ASME, and ISO. All units are manufactured strictly according to national boiler manufacturing standards, including hydrostatic and X-ray testing for quality assurance.

Our Service
We offer a full range of boiler solutions, including capacities from 0.5 to 30 tons, using various fuels like coal, biomass, oil, and gas. Our products provide steam, hot water, and hot oil at working pressures ranging from 0.7 to 2.5 MPa. We ensure reliable performance, efficient operation, and long-term durability for all our clients.
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July 27, 2025

SPECIFICATIONS FOR DZL COAL FIRED STEAM BOILER
Boiler basic parameter	Steam capacity	T/h	1, 2, 4, 6, 8, 10, 12, 15, 20
	Steam temperature	ÂºC	170, 184, 194, 204, 226
	Fuel	Â	Coal
Boiler performance	Working pressure	Mpa	0.7, 1.0, 1.25, 2.6
	Thermal efficiency	%	78----82
	Feed water temperature	ÂºC	20, 105
Boiler performance	Grate heat area	M2	1.5---23.15
	Fuel consumption	Kg/T(steam)	120
	Boiler transportation weight	T	16---31

Â Â Â Â Boiler model Item		Â	DZL2-0.7 /1.25/1.6-AII	DZL4-1.25 /1.6/2.5-AII	DZL6-1.25 /1.6/2.5-AII	DZL8-1.25 /1.6/2.5-AII	DZL10-1.25 /1.6/2.5-AII	DZL20-1.25 /1.6/2.5-AII
Steam capacity		T/h	Â Â Â Â Â 2	Â Â Â Â Â 4	Â Â Â Â Â 6	Â Â Â Â Â Â 8	Â Â Â Â Â 10	Â Â Â Â Â 20
Working pressure		Mpa	0.7/1.25/ Â Â Â 1.6	1.25/1.6/ Â Â Â Â 2.5	1.25/1.6/ Â Â Â Â Â Â 2.5	1.25/1.6/ Â Â Â Â Â Â 2.5	1.25/1.6/ Â Â Â Â Â Â 2.5	1.25/1.6/ Â Â Â Â Â 2.5
Steam temp.		ÂºC	170/194/ Â Â Â 204	194/206/ Â Â Â 226	194/206/ Â Â Â Â Â 226	194/206/ Â Â Â Â Â 226	194/206/ Â Â Â Â Â 226	194/206/ Â Â Â Â Â Â 226
Feed water temp.		ÂºC	Â Â Â Â 20	Â Â Â Â Â 20	Â Â Â Â 20	Â Â Â Â 105	Â Â Â Â 105	Â Â Â Â 105
Thermal efficiency		%	Â Â Â Â 78	Â Â Â Â 78	Â Â Â Â Â 80	Â Â Â Â Â 80	Â Â Â Â Â 80	Â Â Â Â 82
Grate heat area		M2	Â Â Â Â 3.2	Â Â Â 5.14	Â Â Â Â Â 7.4	Â Â Â Â Â 9.6	Â Â Â Â 11.4	Â Â Â 23.15
Coal available		Â	Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â II type bituminous, low heat capability:17700-21000KJ/kg
Water pump	Model	Â	1Â½GC5Ã—7	1Â½GC5Ã—7	2GC-5Ã—6	2Â½GC6Ã—6	DG12Ã—7	DG25-35Ã—5
Water pump	Motor power	Kw	Â Â 7.5/11	7.5/11/ Â Â Â Â Â 18.5	15/18.5	15/18.5	18.5/22	30/37
Blast fan	Model	Â	G6-41-13 NO5.4A	G6-41-13 NO6.4A	G6-41-13 NO7.1A	G6-41-13 NO8.5A	G6-41-13 NO8.5A	TG20-1
	Ventilation	M3/h	4358-2310	7358-3596	10354-5394	18137-9369	18137-9367	32079
	Wind pressure	Pa	994-1254	1181-1436	1697-2270	2535-3391	2535-3391	2559
	Motor power	Kw	Â Â Â Â Â 3	Â Â Â 5.5	Â Â Â Â 7.5	Â Â Â Â 18.5	Â Â Â Â 18.5	Â Â Â Â 37
Induced draft fan	Â Â Â Model	Â	Y6-41-13 NO5.4C	Y6-41-13 NO7.1C	1Y6-41-13 NO10C	Y6-41-13 NO11.2D	Y6-41-13 NO11.2D	GY20-15
	Ventilation	M3/h	8901-4350	15219-8171	32144-16607	41773-21578	41773-21578	73308
	Wind pressure	Pa	2568-3240	2454-3283	2574-3444	2764-3697	2764-3697	3515
	Motor power	Kw	Â Â Â 11	Â Â Â Â 22	Â Â Â Â Â Â 37	Â Â Â Â Â 45	Â Â Â Â 55	Â Â Â Â 110
Maximum size for shipment		M	5.82Ã—2.1Ã—3.2	6.5Ã—2.66Ã—3.52	6.7Ã—3Ã— 3.54	8.0Ã—3.2Ã— 3.58	8.45Ã—3.2Ã—3.58	10Ã—4.8Ã— 3.55
Maximum weight for shipment		T	18/19/20	27/29/31	32/33/34	42/43/44	45/47/49	30/31/32