Use of chelating agents in the conversion of coal to low mineral content fuel
AssigneeConoco Inc.
InventorWilliam G. Gibson
Life of this patent
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Abstract
An improvement in the production of low mineral content fuel by coal liquefaction processes which yield as a primary product a mixture of liquid and solids a part of which are suspended in the liquid whereby the separation of the suspended solids is facilitated by the addition of an effective amount of a suitable chelating agent to the mixture. The chelating agent is optionally added as a solution of the chelating agent in a suitable solvent and desirably is present in an amount from about 100 to about 150% of the stoichiometric amount required to react with the suspended solids in the mixture.
Claims8
In a process for producing a low mineral content fuel by coal liquefaction processes which yield as a primary product a mixture of liquids and solids, the improvement comprising;
- admixing an effective amount of a suitable chelating agent with said mixture thereby facilitating the separation of said solids from said mixture.
Dependencies are inferred from the claim text.