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Commentator

Join Date: May 2007
Posts: 72

dry curing

02/15/2008 1:42 AM

I am designing an oven working at 85 C to 150 C to cure latex (water based)

compound using natural gas burners. But during curing moisture increases

and it retards the evaporation and so loss of heat energy occurs and to increase

curing I will have to increase temperature of the oven .I want to make a system to condense the moisture of circulating hot air from the oven .But how is it possible ?

Is there any oven of such type in the market ?

Ashraf

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Guru
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#1

Re: dry curing

02/16/2008 1:03 AM

Google "condensing dryer"

Cheers...

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Guru
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#2

Re: dry curing

02/16/2008 8:56 AM

So, you are designing an oven to cure a water based compound and you plan to use natural gas heating?

The main problem I can see with this is that using gas heating is going to give a high humidity inside the oven, which is what you are experiencing...

Is it not possible to use electric heating? then the heat would be drier and you may not need to dehumidify the oven air.

John.

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Commentator

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#3
In reply to #2

Re: dry curing

02/18/2008 11:26 PM

You are right .But for reducing cost it is necessary .Does any body have scientific

data about the %moisture in the ovens using natural gas for curing water based

compound ? I want to purchase moisture tester for the oven.

Ashraf

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Commentator

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#4
In reply to #2

Re: dry curing

02/19/2008 3:27 AM

But natural gas ovens save cost .Moreover humidity also increases due to evaporation of water from water-based latex .I want to condense the water

vapours out from the oven then recycle the dry hot hair into the oven .

Mechanically is it possible ?

Ashraf

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Guru
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#5
In reply to #4

Re: dry curing

02/19/2008 4:27 PM

If it helps some clothes dryers are of a condensing type in that they need a drain instead of the more common vent to exhaust air. I think this type procedure would provide you cost effectiveness and these clothes dryers do use natural gas for fuel. Could be you can check replacement parts list and appropriate the necessary equipment for your operations.

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Commentator

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#6
In reply to #5

Re: dry curing

02/20/2008 3:19 AM

Actually I want to connect a dehumidifier to the oven so that all water vapours would

be condensed out from the moist hot air and the dry hot air would be recylced

into the oven .In this way the drying/curing of the compound in the oven

can be carried out at lower temperatures in short time .

Another option may be to use dessicant chemical to absorb the moisture rapidly.

What do you think if I would like to use "silica gel beads" / "plaster of paris",

"anhydrous calcium chloride" which may be recylced by heating .

Ashraf

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AshrafSiddiqui (3); bwire (2); Electroman (1)

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