Process for the production of regenerated humic acids from coal
AssigneeEniricerche S.p.A.
InventorsVincenzo Calemma, Riccardo Rausa
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Abstract
A process is disclosed for the production of humic acids, which comprises an oxidation of coal in dry phase with oxygen or mixtures of oxygen and nitrogen in a fluidized-bed reactor, by using coal with a granulometry comprised within the range of from 100 .mu.m to 3 mm and operating at a temperature comprised within the range of from 150.degree. to 300.degree. C., under a partial pressure of oxygen comprised within the range of from 1.1 abs.atm. to 10 abs.atm., for a contact time comprised within the range of from 30 minutes to 600 minutes.
Claims10
Process for the production of humic acids by means of the oxidation of coal, characterized in that the oxidation is carried out in dry phase with oxygen or mixtures of oxygen and nitrogen, inside a fluidized-bed reactor, carried out by using coal with a granulometry comprised within the range of from 100 .mu.m to 3 mm, and operating at a temperature comprised within the range of from 150.degree. to 300.degree. C., under a partial pressure of oxygen comprised within the range of from 1.1 abs. atm to 10 abs. atm, for a contact time comprised within the range of from 30 to 600 minutes.
Dependencies are inferred from the claim text.