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coal fired hot air furnace, 1. stable hot air output, 2. high heat efficiency, 3. long-life span, 5.Factory Directly Selling - details see: https://www.machineto.com/new-product-2013-hot-air-furnace-coal-fired-hot-air-furnace-10295733

New Product 2013 Hot Air Furnace ,coal fired hot air

furnace

This coal/ wood fuel hot air furnace is used to generate hot air for drying process or heating the heat-transfer medium, such as thermal oil and water, with a heat exchanger. This furnace has the following technical features:

1) Cast iron fixed grate: the fixed grate means the wood/coal feeding should be manually; but the life-span of fixed grate is much longer. And few repair or maintenance is required.

2) Stable and adjustable output temperature: an air buffer chamber is combined at the back of the furnace to mix the hot air from the combustion chamber with the fresh cold air from the air valve to adjust the hot air temperature. This chamber can also works as a dust collector where most of the dust will drop from the hot air.

3) Ash collecting ports: several ash collecting ports are combined around the furnace to facilitate the ash collection.

4) Wood/coal feeding ports: several wood/coal feeding ports are combined above the ash collecting ports to facilitate the feeding process.

5) Strong cast iron frame: the furnace body is made by cast iron frame, painted carbon steel cover and heat insulation material. The furnace is very strong and can last many years.

6) well insulated: the inner furnace is lined by very thick firebricks with pearl mud. The heat efficiency is quite high.

Technical Parameters for Hot Air Furnace

Name	DLFR-10	DLRF-20	ZLRF-10	ZLRF-20	ZLRF-30	ZLRF-40	ZLRF-160	ZWRF-120	GLRF-80
	Low Temperature	Low Temperature	Medium Temperature	Medium Temperature	Medium Temperature	Medium Temperature	Medium Temperature	Medium Temperature	High Temperature
Thermal Efficiency (%)	≥70	≥70	≥70	≥70	≥70	≥70	≥75	≥75	≥75
	80-150	80-150	200-300	200-300	200-300	200-300	180-300	180-300	400-600
Hot air outlet temperature (C)
Heating Load	0.12	0.24	0.12	0.24	0.35	0.47	0.7	1.4	0.93
Air Quantity (Nm3/H)	3297-2198	3847-3572	3297-2198	3847-3572	5447-3192	6445-7513	6786-36032	10556-7540	6445-7513
Coal Consumption (Kg/h)	27	54	27	54	54	108	162	320	211
Power Consumption (KW)	7.2	9	7.2	9	9	22.5	24	37	24
Applicable Coal	The second class bituminous coal, the second class anthracite coal
(mm)	Φ1220*2450	Φ1500*2740	Φ1220*2450	Φ1500*2740	Φ1750*3500	Φ1840*3790	Φ1850*4350	Φ7000*2200*1500	Φ2100*6395
Overall Dimension (mm)
Approx.weight (t)	1.3	1.6	1.3	1.6	2.3	3.8	4.2	14.2	9