Process for co-recycling tires and oils
AssigneesUniv. of Wyoming, Amoco Corporation
InventorsChang Y. Cha, Henry Plancher, Lawrence S. Kraus
Life of this patent
Estimating the term…
Abstract
A thermal process co-recycles tires with oils to produce gases, liquids and solids. The letter consisting of glass and steel fibers and a carbonous residue which are separately segregated and collected. By using selected additives gas formation and hydrogen sulfide contents are reduced, light product oil yields and quality are maximized and the level of chlorinated substances in the oils are reduced to trace amounts. The carbonous residue makes an excellent modifier for improving performance properties of bituminous binders and bituminous mixtures and for providing added benefits to properties of Portland concrete.
Claims16
A process to co-recycle scrap tires and oil comprising:
- digesting at a maximum temperature below about 750.degree. F. said tires using said oil being selected from the group comprising residuum, waste motor oil, new 600 w cylinder oil, trim gas oil, vacuum heavy bottoms, decanted oil, and combinations thereof;
- mixing a product-enhancing additive being selected from the group consisting of calcium carbonate, calcium hydroxide, calcium oxide, magnesium carbonate, magnesium oxide, magnesium hydroxide, dolomite, sodium carbonate, sodium hydroxide, potassium carbonate, potassium hydroxide, iron oxide, bauxite, red mud, and combinations thereof;
- separating glass and steel fibers from said tires by using a screw reactor housed in a non-spherical chamber;
- retorting at a maximum temperature below about 875.degree. F. obtaining product light oil and product gas and solid carbonous residue, wherein said product light oil is not recycled;
- and
- curing said carbonous residue at a maximum temperature below about 900.degree. F.
Dependencies are inferred from the claim text.