Exhaust fan for coal dust?

Exhaust fan for coal dust?

PostBy: coalkirk On: Wed Oct 03, 2007 9:26 am

I've been thinking of installing an exhaust fan in the area above my boilers hopper. The dust created when loading it ends up going all over the basement. I thought if I used a good exhaust fan during the loading process, maybe I could limit this mess. Concerns and considerations are, can coal dust be dangerous? (Sparks from fan motor armature) Interfering with the boilers draft during this process? I'd appreciate any and all comments regarding this. Thanks!
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

PostBy: Matthaus On: Wed Oct 03, 2007 11:28 am

I have no experience venting coal dust, however I used a Fasco 480 cfm blower to vent a bench top conformal coating work station vent hood. The fume hood was connected to the inlet of the squirrel cage by way of a home made flange adapter. It worked great and since the motor is isolated from the vent path there was no concern for fire or explosion.

The unit is available at the following link:

http://www.electricmotorwarehouse.com/f ... blower.htm

It is available in both 220 and 115 VAC versions depending on your electrical service availability. If you constructed a duct which attached to the top of the hopper and spanned the entire width, you could effectively suck any dust as it rose above the pile of coal in the hopper. Also since you would be extracting air right at the source of the dust I would think there would be no concern for a negative pressure in the area of the combustion air induction on the boiler.

Just an idea. :) I may try a variation myself to solve my bride's concerns for the stove in the house. :lol:
Matthaus
 
Stoker Coal Boiler: Leisure Line WL110 Dual Fuel, natural gas
Hot Air Coal Stoker Stove: Leisure Line Lil' Heater (rental house)
Coal Size/Type: Rice and Buckwheat Anthracite

PostBy: LsFarm On: Wed Oct 03, 2007 2:10 pm

Most forum members who are sensitive to the coal dust just use a garden sprayer and water to wet down the coal in the pile, just dampen the surface coal. And again give the bucket a short spray prior to pouring the coal in the hopper. This reduces the coal dust considerably.

A ducted fan is a neat idea, but you may want to try the water spray method with a bucket and a pile of coal to see how effective it is. Just dump the coal into a cardboard box about the size of your hopper. .

Another 'quick' try idea would be to put a shop vac's hose over the hopper and give that a try, even make a large funnel collector for the hose to make it more effective. Give it a try, it will tell you if it will help or not without investing a lot of work and money.

Greg L

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Last edited by LsFarm on Wed Oct 03, 2007 5:20 pm, edited 2 times in total.
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland


PostBy: szembek On: Wed Oct 03, 2007 5:14 pm

Ask your coal supplier about oiled coal. The place where I get it offers oiled coal for about $5 extra/ton. It cuts down on dust.
szembek
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: A120

PostBy: coalkirk On: Wed Oct 03, 2007 9:09 pm

I have tried using a large shop vac hose over the hopper and it seems to be very effective. I was hoping to use the fan to make the process alittle easier.
I keep my coal in a bin in the basement directly adjacent to my boiler. I shovel from the bin directly into the hopper. Spraying with water isn't impossible but not real practical. My supplier does not offer oiled coal.
I think I'll pickup a used exhaust hood and connect a good fan and give it a test this year. Ill let you know how it works, if I don't blow up.
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

PostBy: bksaun On: Wed Oct 03, 2007 9:21 pm

I found the best thing in the world to clean coal dust.

It's called a "housewife".

It's a nice attatchment you screw on the bed to get the house work done!

Problem solved! :lol:

BK
bksaun
 
Stoker Coal Boiler: Hybrid, Gentleman Janitor GJ-6RSU/ EFM 700
Hand Fed Coal Stove: Hitzer 503
Coal Size/Type: Pea Stoker/Bit, Pea or Nut Anthracite
Stove/Furnace Make: Hitzer/ EFM-Gentleman Janitor
Stove/Furnace Model: 503 Insert/ 700/GJ-62

PostBy: coalkirk On: Thu Oct 04, 2007 4:37 am

I find that attachment works well from the first level up but it won't work in the basement. Maybe it needs to be screwed to the bed tighter.
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

PostBy: coaledsweat On: Thu Oct 04, 2007 7:50 am

coalkirk wrote:I find that attachment works well from the first level up but it won't work in the basement. Maybe it needs to be screwed to the bed tighter.


Perhaps a few mounts in the basement would help the performance in that area?
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

PostBy: coalkirk On: Fri Oct 05, 2007 8:34 am

I'll look into that but I think it might require a new model. My original unit didn't come with the basement option. Too bad.
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

PostBy: coaledsweat On: Fri Oct 05, 2007 9:10 am

Disposal of the older model can get pricey and the newer models tend to have significant startup costs too. Perhaps a rental unit to reach those areas that need attention?

Warning: Never allow the rental and on-site units to come into contact, you'll have a lot more heat than a coal fire.
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

PostBy: Matthaus On: Fri Oct 05, 2007 9:24 am

Hell hath no fury! So maybe installation of a retrofit kit and re-programming of the old unit might do the trick!

Then again the cost of a nice little blower and some ducting is starting to sound cheap! :lol:
Matthaus
 
Stoker Coal Boiler: Leisure Line WL110 Dual Fuel, natural gas
Hot Air Coal Stoker Stove: Leisure Line Lil' Heater (rental house)
Coal Size/Type: Rice and Buckwheat Anthracite

PostBy: Wood'nCoal On: Fri Oct 05, 2007 10:17 pm

I've found significant problems, as well as some resistance trying to reprogram the older units, sometimes requiring complete replacement!
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

PostBy: coal berner On: Fri Oct 05, 2007 10:58 pm

Somtimes you have to Shake the Grates Longer and Harder :) but that only works for little while And in some cases you Might have to Shake your own Grates :(
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520

PostBy: Ed.A On: Sat Oct 06, 2007 9:44 am

:lol: This thread should be inducted as one of the all time greatest inuendo posts I've ever read. Great job everyone.
Ed.A
 
Hot Air Coal Stoker Stove: Alaska Channing III/ '94 Stoker II
Coal Size/Type: Rice

PostBy: coaledsweat On: Sat Oct 06, 2007 10:35 am

coal berner wrote:Somtimes you have to Shake the Grates Longer and Harder :) but that only works for little while And in some cases you Might have to Shake your own Grates :(


Time for a stoker! :)
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea