Bench-scale research by the Bureau of Mines has shown promising results for converting organic solid wastes to a low-sulfur oil. All types of cellulosic wastes, including urban refuse, agricultural wastes, sewage sludge, wood, lignin, and bovine manure, have been converted to oil by reaction with carbon monoxide and water at temperatures of 300 deg to 400 deg c and pressures from 2,000 to 4,000 psig in the presence of various catalysts. In this work, wood wastes slurried with product oil gave higher yields of oil at lower pressures and temperatures with lower consumption of carbon monoxide than did many of the other waste materials. Wood also has a very low ash content, which simplifies processing requirements. The Bureau is planning to construct a 1- to 3-ton-per-day pilot plant to further study this conversion technique to allow determination of the commercial usefulness of this process.
Proc Wood & Bark Residues for Energy, Forest Res. Lab Schl of Forestry, Oreg. State U, Pp 29-34