Biomass Boiler

Chain grate boilers are an industrial heating solution that allows for efficient, continuous operation by moving fuel through the boiler on a conveyor belt-like grate. As the fuel progresses, it ignites and burns, generating heat to produce steam from the water within the boiler. This can be achieved either directly (in fire tube boilers) or indirectly (in water tube boilers).

However, it's important to note that chain grate boilers lack the capacity for in-furnace desulfurization, a feature present in fluidized bed boilers. This means that they emit sulfur oxides (SOx) in the flue gas, contributing to atmospheric pollution. Moreover, they can struggle with inconsistent combustion and adapting to different types of coal, affecting their efficiency. Lastly, high furnace temperatures in these boilers can lead to the production of nitrogen oxides (NOx), another pollutant that can negatively impact the environment. Regular maintenance is also essential to prevent the build-up of ash and other combustion by-products that can impact efficiency.

The water and steam are separated into two drums. The lower drum, known as the water drum, is where water is heated and rises as steam into the upper drum. This arrangement allows for a more efficient heat recovery as the water and steam are kept separate, reducing heat loss. They are generally larger and more complex to install and maintain but are often more efficient and offer higher capacities.

Simple term of double-drum biomass boiler is like a two-pot cooking setup. One "pot" or drum heats the water, and then the steam moves to the second drum. This allows it to create more heat more efficiently, but it's a bigger machine and needs more space.

左右滑動看表格

Model
			SZL(W)6-1.25-M	SZL(W)8-1.25-M-|	SZL(W)10-1.25-M-||	SZL(W)15-1.25-M	SZL(W)20-1.25-M
Specification	Rated evaporation	t/h	6	8	10	15	20
	Rated steam pressure	Mpa	1.25/1.6
	Rated steam temperature	℃	193/204
	Rated water inlet temperature	℃	20/105
	Design thermal efficiency	%	>82
	Heat of combustion	kcal/kg	4000
	Fuel consumption	kg/h	1140	1332	1665	2500	3330
	Blower		GG6-15	GG8-15	GG10-15	GG15-15	GG20-15
	Fan		GY6-15	GY8-15	GY10-15	GY15-15	GY20-15
	2nd fan		9-26-4.5A		9-26-5A		9-26-5.6A
	Governor box type		GP-10P	GL-16P		GL-20P
	Slag way		Shave plate-type/ Spiral
	Precipitator		Cyclone dust removal/Water film dust removal
Heated surface
	Ontology	m³	209	255	298	438	568
	Steel economizer	m³	35.3	32	47	80	102
	Economizer	m³	65.6	130.8	174.4	354	413
	Air preheater	m³	/	80.9	120	170	220.8
Pump	Input power	kW	7.5	11	15	22	30
Pipe	Main steam valve diameter	DN	125	150		200
	Water inlet diameter	DN	40	50		80
	Safety valve diameter	DN	80*1/50*1	80*2		100*2
	Blowoff valve diameter	mm	50/40
	Chimney	Φ	600	700	850	1000	1200
Overall size	Weight	t/h	72	85	100	150	175
	Length	m	8.9	8.5	10.7	12	13.2
	Width	m	3.2	2.8	3.5		3.7
	Height	m	6	5.6	6	6.8