| 主权项 |
1. A method comprising:
(a) peptizing an acid-reactive substrate at a temperature between about 70° C. and about 105° C. with an acidic reagent under shear to obtain a peptizate having increased surface area, wherein the substrate comprises liquid bound on a solid sorbent material, wherein the liquid comprises oil or a mixture of oil and water, wherein the bound liquid comprises less than about 35 wt % of the substrate; (b) cocurrently mixing the peptizate with a combustion effluent gas under turbulent conditions in a thermal desorption zone to heat the peptizate and desorb at least a portion of the oil from the sorbent material, wherein an average residence time for solids in the desorption zone is from 10 seconds to 5 minutes and wherein a dilute phase in the thermal desorption zone at exit therefrom has a temperature of at least about 200° C.; (c) separating the peptizate-combustion effluent gas mixture into the dilute phase and a dense phase, wherein the dilute phase comprises oil vapor and whereby the dense phase has an oil content less than or equal to about 3 wt %; (d) condensing the dilute phase at a temperature above 100° C. to produce a first recovered fraction comprising at least 50 wt % of the oil in the substrate; (e) recovering at least a portion of the oil present in first recovered fraction; and (f) purifying at least a portion of the recovered oil by a purification process comprising contacting at least a portion of the recovered oil with a treatment solution, with an absorbent, with one or more reagents, separating, filtering, or a combination thereof, to produce a reclaimed oil having a total BTEX concentration of less than 1 wt %, determined according to ASTM D-5790 or an equivalent thereof. |
