Gas: heating and illuminating – Processes – Coal
Patent
1982-08-17
1986-10-14
Kratz, Peter
Gas: heating and illuminating
Processes
Coal
48202, C10J 314
Patent
active
046170278
ABSTRACT:
A novel process, and the articles of manufacture, or compositions, formed thereby, wherein a Group II-A metal, or compound thereof, can be ion-exchanged onto coal, and thereafter a Group I metal physically admixed or otherwise incorporated therewith, so that the composition can be pyrolyzed, and gasified, to form a high-BTU, intermediate-BTU or synthesis fuel gas. Suitably, the Group II metal, or alkaline earth metal, can be directly ion-exchanged onto a low rank coal, without necessity of any pretreatment, by contact with a basic solution of a Group II-A metal compound since, of course, low rank coals contain natural ion-exchange sites. An alkaline earth metal, or metals, can also be ion-exchanged onto a high rank coal, notably one deficient in natural active exchange sites, such as a subbituminous or bituminous coal, by (a) contacting, heating and soaking the coal in an alkali solution of a Group I-A metal compound sufficient to incorporate said metal compound, or cation portion thereof, into said coal and form ion-exchange sites, (b) or by oxidation of the high rank coal by contact with an oxidizing agent, preferably an oxygen-containing gas (air), peroxygen compound, oxidizing acid or the like, to form ion-exchange sites, ion-exchanging a Group II metal onto the active sites thus created, and thereafter admixing or otherwise incorporating the Group I metal to form the desired article of manufacture, or composition.
REFERENCES:
patent: 2693452 (1904-11-01), Goedkoop
patent: 4092125 (1978-05-01), Stambaugh et al.
"A Novel Approach to Gasification of Coal Using Chemically Incorporated Catalysts", Chauhran et al., 173rd ACS Mat's Meeting, 3/20-25/27, 1977.
"The Use of Catalysts in Coal Gasification", Johnson, Catal. Rev., Sci. Engr. 14(1), 1976, pp. 131-137, 142-148.
Ion Exchange, Helferich, pp. 5, 6, 17, 1962.
Exxon Research and Engineering Co.
Finkle Yale S.
Hoover Wayne
Kratz Peter
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