29 MW Hot Water Boiler

Product Description

This boiler has 3 vertical steam drums and a chain-grate stoker. The boiler body is composed of arch tube-sheet, threaded smoke pipe, Ba Zi smoke flue and catchment. The designed available coal type should be II type bitumite. The boiler uses 8.5 meter chain-grate stoker, which reaches 65% coverage, and 12 back rake; Air comes from both sides of the stoker in order to guarantee the coal layer could receive even ventilation. The blower pushes cool air into the air preheating machine, then the preheated air will, through the hot air flue on both sides of the boiler and the air inlet pipes of the stoker, be divided to 2 flows, and separately ascend to the boiler furnace

The original flue gas emission concentration could satisfy the national standard for the reason that the boiler has installed the threaded smoke pipe.

This boiler has strong power, 10% override ability, high thermal efficiency, its operation efficiency could reach 81% so that it is a minimal polluted, high effective and energy conserved product.

29 MW hot water boiler specification list (as table).

Remarks:
1. The parameter in the upper sheet is only for your reference, we will not inform customer the varied size and dimension due to the design and installation;
2. The coal consumption is calculated according to the coal in bulk heat rate 6000 kcal/kg;
3. The boiler exterior size is in accordance with the design drawing.

Boiler Moder			DZL29-1.25/130/70-A II	DZL29-1.25/150/90-A II
Boiler Name			assembled watertube and firetube hot water boiler	assembled water tube and firetube hot water boiler
Boiler structure			single steam drum vertical chain-grate stoker	single steam drum vertical chain-grate stoker
Rated thermal power		MW	29	29
Working pressure		Mpa	1.25	1.25
Outflow water temperature		ºC	130	150
Backwater temperature		ºC	70
Boiler thermal efficiency		%	81
Area of heating surface	Boiler body	m 2	952
	Stoker	m 2	34.5
Flue	Coal rank		II type soft coal
	Low-level heat rate	kj/kg	17700-21000
	Consumption	kg/h	5920
Flue gas emission temperature		ºC	146
Original emission concentration		Mg/Nm 3	standard of nation
Flue gas blackness			<1 grade
Dimensions		mmm	13.19.29.7
Dimensions of biggest parts for shipment		mmm	8.62.12.4
Weight of biggest parts for shipment		t	28
Total boiler weight		t	160
Water entrance nominal diameter		mm	250
Water exit nominal diameter		mm	250
Auxiliaries	blast fan	Model	G4-73-11NO10D
	Induced draft fan	Model	Y4-73-11NO14D