Patent ID: 8641895
Filing Date: 2014-02-04
Classification: C09K,C10G,E21B

Abstract:
1. An apparatus comprising: a substrate feed zone to supply a charge of a substrate to a peptizing zone, the substrate comprising a 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; an acid feed system to supply an acid reagent to the peptizing zone; one or more peptizing agitators to impart shear into the peptizing zone to produce a peptizate; wherein the peptizing zone is fluidly sealed; a transfer zone to fluidly isolate the peptizing zone from a thermal desorption zone and to supply the peptizate from the peptizing zone to an inlet end of the thermal desorption zone to vaporize oil from the peptizate; a burner in fluid communication with the inlet end of the thermal desorption zone to supply combustion effluent comprising less than 1 vol % oxygen directly into the inlet end of the thermal desorption zone at a temperature greater than 300° C.; one or more thermal desorption agitators to promote vapor-solid mixing between the combustion effluent and the peptizate in the thermal desorption zone; a solids disengagement zone in fluid communication between the thermal desorption zone and a vapor recovery system; and a solids outlet from a housing for the thermal desorption zone adjacent the solids disengagement zone.