It's beginning to seem as if, at one time, anyone who was anyone in the community of United States Chemical and Petroleum companies knew how to convert Coal into liquids suitable for refining into fuels and organic chemicals of commercial utility.
Herein, in their United States Patent on Coal liquefaction technology, the old Allied Chemical Company, which became a part of Honeywell in 1999, if you recall our previous dispatches about Honeywell's Coal conversion achievements in concert with their UOP - United Oil Products - Division, presents an interesting, even intriguing, take on Coal conversion processes.
As you will see, they utilize products easily derived from, especially high Sulfur, Coal as agents of dissolution in their liquefaction technique.