It is difficult to dehydrate coal tar
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The analysis of coal tar shows a density of 1.178, a viscosity of 2.52, 5.54% toluene-insoluble substances, and 14.42% naphthalene. It is difficult to remove the water – what should be done?
Heat, let stand, drain; no problem if below 2%
This post was last edited by Feiyu sdtzman on 2016-10-21 at 10:03. The temperature is set at 90, but the temperature at the top of the tank is 50. After 36 hours of waiting, no free water was present; tar formation indicated an excess of water
There is no free water, and the moisture in the tar cannot be separated. Is there any good method?
It’s clearly a water-in-oil system; reaching 90 degrees corresponds to the transition temperature, at which point the upper layer needs to be removed. The system must be left to stand for at least 72 hours
Conversion temperature? Has it been emulsified? The temperature is high in the middle, but low at the top. I don’t know how to avoid water overflow right now; could you tell me? Thank you
Check whether there is emulsification of the tar; water-in-oil formation may be present.
There is a high possibility of tar emulsification in your case, so it is difficult to separate. It is recommended to return to the coke oven suction pipe and add a small amount of Nalco separator; the effect is expected to be good.
This post was last edited by reading_wyc on 2016-10-22 at 16:34. Hello, has the dehydration problem been resolved? It hasn’t been resolved; please contact me.