Horizontal Single Drum Chain Grate Coal Fired Steam Boiler

• Function: Steam Boilers
• Fuel: Coal/Biomass
• Installation: Assembled Boiler
• Structure: Water and Fire Tube
• Media: Steam
• Water Circulation: Natural Circulation
• Drum Placement: Horizontal Boiler
• Pressure: Low Pressure
• Manufacturing Level: B
• Burning Style: Chamber Combustion Boiler
• Usage: Industrial
• Warrant: 1 Year
• Transport Package: GB
• Specification: ISO9001, SGS
• Trademark: TECHTOP
• Origin: Shandong, China
• HS Code: 8402190000
• Production Capacity: 500set/Year

Product Description

		DZL4-1.6-AII	DZL6-1.6-AII	DZL8-1.6-AII	DZL10-1.6-AII	DZL15-1.25-AII	DZL20-1.6-AII	DZL25-1.6-AII	DZL30-1.6-AII
(t/h)       Rated evaporation capacity		4	6	8	10	15	20	25	30
(Mpa)      Rated working pressure		1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6
(ºC)       Rated steam temperature		204	204	204	204	204	204	204	204
(ºC)           Feed water temperature		20	150
()     Radiation heating area		12.24	19.2	22.1	24.15	34.5	53.7	99.2
()    Convection heat area		89.55	115.3	128	168.2	339.9	411.8	457.8	628.6
()  Economizer heat area		28.16	52.3	52.8	130.8	150.4	188	295	413
()        Grate effective area		5.18	7.7	9.07	11.53	16.24	22.84	24.7	26.88
Suitable coal type		AII
(kg/h)            Coal consumption		615	870	1153	1440	2165	2868	3550	4254
(%)          design thermal efficiency		78.45	77.26	80.63	79.7	80.5	81.1	81.2	81.5
Max transport                    (××)(m)		7.06×2.96×3.60	7.60×2.95×3.70	7.34×3.00×3.70	7.20×3.50×3.70 7.50×2.30×2.60	7.33×3.37×3.70 8.90×3.37×2.50	7.81×3.37×3.51 9.44×3.77×2.60	8.47×2.60×2.74             12.00×8.02×8.90	9.00×2.60×2.85 12.00×8.20×9.70
(t)         Max transport weight		30	42	46	25/18.5	27/25	29/28.5	31/33	35/36
I.D fan	type	Y6-41-7.1C	Y6-41-10C	Y9-26-10D	Y6-41-11.2D	Y6-41-11.7C	Y6-41-12.2D
	(kw)electrical power	18.5	37	45	55	75	110
F.D fan	type	G6-41-6.4A	G6-41-7.1A	G4-72-5A	G6-41-8.5A	G6-41-11.7A	G5-56-9A
	(kw)electrical power	5.5	7.5	15	18.5	30	37
Feed water pump	type	1 1/2GC-5×9	2GC-5×7	2GC-5×7	2 1/2-6×8	DG25-30×8	DG25-30×8
	(kw)electrical power	11	22	22	30	45	45
Gear box	type	WT-5	WT-6	WT-6	WT-10	WT-20	WT-20
	(kw)electrical power	0.55	0.75	0.75	1.1	1.5	1.5
Slag removal	type	GBC-4	GBC-6	GBC-8	GBC-10	DGC/S-15	DGC/S-20
	(kw)electrical power	1.1	1.5	1.5	1.5	2.2	2.2
Coal feeder	type	FS-4	FS-6	FS-8	FS-10	FS-15	FS-20
	(kw)electrical power	1.1	1.5	1.5	1.5	2.2           ()	2.2          ()

Brief introduction
1.DZL series water and fire tube boiler use a lot of new technologies, for example, thread smoke tube, wing flue, arch-tube plate,self fixture, return water injection, etc. They can not only eliminate the disadvantages of drum deformation,tube sheet crack, water cooling wall burst but also can save energy and be more efficient.
2.Smoke circulation: The hot smoke burst from grate erupts from middle of arch ---- rear furnace----wing flue----front smoke chamber----thread smoke tube----rear smoke chamber----flue----economizer----dust collector----induced draft fan----chimney.
3.Air flows: forced draft fan----underground wind duct----air chamber at two sides of grate----separated wind chamber under grate-supply air for the burning by ventilation holes 
opening at the grate.
 
Technical advantages
1.Wing flue
 Cool down smoke in high temperature tube sheet, avoid subcooled boiling, reduce boiler bottom heat load, avoid tube sheet crack, avoid drum deformation.
2.Arch tube plate
 Improve tube sheet flexibility, reduce welding seam thermal stress. Cancel brace and avoid tube sheet crack.
3.Thread gas tube
 Enhance heat transfer,reduce drum size,improve flexibility,reduce welding seam thermal stress.
 No dust accumulation, avoid tube and sheet crack.