DZL Coal-fired steam boiler—Product

DZL Coal-fired steam boiler

ModelDZL
FuelIntermediate bituminous coal, anthracite
Capacity0.7~14.0 MW
Pressure0.7/1.0/1.25/1.57/1.6/2.45 Mpa
ApplicationLarge, medium and small-sized industrial and mining enterprises use steam and live heating

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Detail Parameter Advantage Case

Product Detail Product introduction

　　The DZL series quick-loading boiler is a horizontal three-pass fire hose chain grate boiler, which uses medium-sized bituminous coal and anthracite. The boiler body is longitudinally arranged with a single drum. The threaded tobacco pipes are arranged in the drum to form a convection heating surface, and the drum and the water cooling walls on both sides constitute the radiation heating surface of the furnace. The combustion equipment uses light chain grate; The electric control realizes governor stepless speed regulation, limit parameter alarm and chain protection.

Basic parameters The basic parameters

Basic technical parameters of DZL Coal-fired steam boiler

Specification		DZL1-0.7-AII DZL1-1.0-AII DZL0.7-0.7/95/70-AII	DZL2-1.0-AII DZL2-1.25-AII DZL2-1.57-AII DZL2-2.45--AII DZL1.4-0.7/95/70-AII	DZL4-1.25-AII DZL4-1.57-AII DZL4-2.45--AII DZL2.8-0.7/95/70-AII	DZL6-1.25-AII DZL6-1.6-AII DZL4.2-1.0/115/70-AII	DZL10-1.25-AII DZL10-1.6-AII DZL7-1.0/115/70-AII	DZL15-1.25-AII DZL15-1.6-AII DZL10.5-1.0/115/70-AII	DZL20-1.25-AII DZL20-1.6-AII DZL14-1.0/115/70-AII
( t/h/MW)Rated evaporation capacity(supply heat)		1/0.7	2/1.4	4/2.8	6/4.2	10/7	15/10.5	20/14
(MPa)Rated pressure		0.7/1.0/0.7	1.0/1.25/1.57/2.45/0.7	1.25/1.57/2.45/0.7	1.25/1.6/1.0	1.25/1.6/1.0	1.25/1.6/1.0	1.25/1.6/1.0
(℃)Rated Steam temperature /Output water temperature		170/184/95	184/194/204/225/95	194/204/225/95	194/204/115	194/204/115	194/204/115	194/204/115
(℃)Water supply temperature( return water temperature)		20/70	20/70	20/70	20/70	60/70	60/70	60/70
Heating area	proper	32.4	59.3	89.16	126.7	251	380.8	470.7
Heating area	(㎡)Economizer	12.51	28.16	38.5	78.5	174.4	174.4	377.6
(㎡)Effective area of great		2.05	3.7	5.3	8.32	12	17.38	21
Fuel available		AII 二类烟煤 Coal
Fuel consumption		151	302	600	888	1447	2170	2894
(％)Thermal efficiency		79	79	79	79	79	79	81.45
（t）Weight of bigest part for transportation		13	22	25	23	29	20	23
（m）(L×W×H)Overall dimension of boiler assembled		5.2×2×2.9	5.8×2.5×3.5	6.3×2.6×3.6	7.3×3.2×3.6	7.2×3.3×3.6	8.8×3.7×3.7	9.7×3.4×3.7
（m）(L×W×H)Overall dimension of boiler assembled		6×3.5×4.1	6.0×3.9×5	7.2×4×4.9	8.0×5.1×6	8.2×6×6.5	10.2×6.7×8.6	13.5×7.4×8.7

Note: Technical parameters are subject to change without notice.

Advantage The working principle of

Compact structure, volume gradient, infrastructure investment province;
Adding coal and slag mechanization;
Boiler output is sufficient and efficient;
To avoid bulging defects: the riser tube is pulled to the hearth on the two sides of the tank, and then the bottom of the drum is covered with the bottom of the drum covered with thermal insulation material to form the heating surface of the furnace roof. The novel furnace structure successfully solves the problem. The bottom of the cylinder is directly subjected to high-temperature flame radiation to avoid "bullet" defects;
Good for the combustion of inferior coal: The arched design of the DZL chain grate coal-fired boiler adopts the latest scientific research results from the “National Science and Technology Progress Second Prize of Xi’an Jiaotong University”. The rear arch is low and long, the exit section is anti-tilt, the front arch angle is 45° and the rear The arches respond to each other, forming an inverted "α" flame, which is beneficial to the combustion of inferior coal, and the adaptability of coal is strong;
Prevent grate leakage: design push-pull gate cleaning device, gate heat-resistant cast iron finishing seal structure, thus effectively preventing secondary combustion deformation and grate leakage;
To avoid cracks in the tube sheet: the two-wing flue is set to allow the flue gas to enter the front smoke box smoothly, so that the temperature of the front tube sheet is the same and lower than 600°C, to avoid the DZL chain grate coal-fired boiler from generating heat due to temperature stress. Cracked board.

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