There is some fouling in heat exchangers in oil refinery .I want to know percentage of organic and inorganic in the fouling by igniting the fouling deposit .what is LOI temperature for estimating organic content in the fouling?At what temperature(loss on ignition) do we estimate the organic content of a fouling deposit in oil refinery?
The temperatures used are not consistent and are usually based on experience of what is useful. For example, in my industry, we use a muffle furnace set at 1000C to determine the LOI in coal ash, but the stuff has already been burned once and the inorganics have been oxidized. I have seen methods for soil samples that use 500C, that may be more suited to your process since you have unoxidized inorganics.
Just be careful when you first put the sample in the furnace, you should slowly ignite it first, I imagine you will have a high fraction of long chain hydrocarbons that will gas off and burn.
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