4 Ton Waste Fabric Wood Coal Fired Steam Boiler for Textile Factory

DZH series coal/biomass fired steam boiler realizes almost zero pollution with the use of special dust collector solution. this series boiler is single drum horizontal type shell boiler, the combustion equipment is moving grate. the fuel could be II class bituminous coal and biomass fuel, the diameter of coal should be 6-25mm, and ash content should be less than 32.4%, and for the biomass fuel, carbon content should less than 50%, sulphur content less than 0.08%, and ash content less than 3%.

2. Combustion process

the fuel enters the furnace and burns on the grate, and the flue gas generated goes into the convection tube of both wings along the bottom of the pot through the exit smoke window on the figure 8 wall, enters the threaded pipe through the front smoke box, passes through the economizer and dust collector, and is pumped by the induced draft fan into the atmosphere through the chimney.

3. Technical features

(1) the pot barrel is composed of arch tube plate and threaded smoke pipe, so that the pot barrel is changed from a quasi-rigid body to a quasi-elastic body structure, and the stretch parts in the tube-plate area are eliminated to reduce the stress.the smoke pipe in the tube plate is changed from two return journey to single return journey, which solves the problem of crack in the tube plate.

(2) the bottom of the pot is arranged with an ascending pipe row, which eliminates the stagnant area at the bottom of the pot and makes the mud residue not easy to deposit. the high temperature area of the pot can be well cooled to prevent the bottom bulge of the pot.

(3) High efficiency heat transfer threaded smoke pipe is adopted to enhance the heat transfer effect and achieve the characteristics of boiler heating up and rapid pressure boost, thus improving the thermal efficiency of the boiler.

(4) Compact structure, compared with the same type of boiler, the shape size is small, save investment in boiler house infrastructure.

(5) Stable operation, convenient adjustment and sufficient output.

(6) the threaded smoke pipe is used to enhance the heat transfer, which improves the heat transfer coefficient and thermal efficiency, because the smoke has a disturbance effect in the pipe.Smoke tube is not easy to accumulate ash, play the role of cleaning.

(7) the eight-character wall in the furnace and the smoke window at the exit have a certain dust-lowering effect.the original dust emission concentration of the boiler is controlled below the standard to ensure that the soot emission of the boiler meets the national environmental protection regulations.

(8) the unique double-layer secondary air design improves the ignition condition of biomass fuel, adopts the independent air chamber, achieves the reasonable distribution of wind, forms an aerodynamic field favorable to combustion in the furnace, and makes the combustion temperature and combustion efficiency high.

4. Technical Parameter

Boiler model		DZH1-1.0-T	DZH2-1.25-T	DZH4-1.25-T	DZH6-1.25-T
Rated capacity	ton/h	1	2	4	6
Rated pressure	Mpa	1.0	1.25	1.25	1.25
Rated steam temperature	℃	184	194	194	194
Active grate area	m2	2.11	3.95	5.34	9.2
Exhaust gas temperature	℃	127.2	126.4	137.3	146.8
Fuel consumption	kg/h	176	352	705	1058
Thermal efficiency	%	83.5	83.5	83	83
Weight	ton	9	15	18.5	25
Dimension	mm	4320*1825*2685	4950*2650*3177	5650*2550*3434	6930*3020*3664
Delivery mode	/	Package	Package	Package	Package

Boiler Picture

DZH type steam boiler is suitable for painting room, drying box, drying tower painting line and other purposes.It is especially suitable for central heating in urban residential areas, industrial production, enterprises and institutions, schools, hotels, bath centers and other places where heating, hot water and steam are needed.