AN APPARATUS AND A PROCESS FOR LOW-TEMPERATURE DRY DISTILLATION OF OIL SAND, OIL SLUDGE, OIL SHALE AND BIOMASS

摘要

The present invention discloses an apparatus and a process for low-temperaturedry distillation of oil sand, oil sludge, oil shale and biomass. The apparatusincludes aconveying device, a storage bin, a metering device, a drying furnace and asurge bin,which are connected sequentially, and the process includes drying andpreheating,dry distilling and cooling. An externally-heated rotary dry distillationfurnace isprovided as a core apparatus of the invention for the pyrolysis of oil sand,oil sludge(e.g. mixture of crude oil and soil, tank bottom oil sludge, refinery oilysludge), oilshale and biomass, producing products of high purity with little loss andeffectivelysolving the adhesion and wall sticking problem of solid materials during thepyrolysisprocess by returning materials. The process of simplified and stable operationhas adistinct advantage in processing granular materials, including oil sand, oilsludge (e.g.mixture of crude oil and soil, tank bottom oil sludge, refinery oily sludge),oil shale andbiomass.