Patent ID: 8969647
Filing Date: 2015-03-03
Classification: C10J,Y02P

Abstract:
1. A process for thermally treating a refinery sludge, comprising: a. drying or pre-heating the refinery sludge at a temperature of from 110 to 120° C., to obtain a dried sludge; b. gasifying the dried sludge at a temperature of from 750 to 950° C. for from 30 to 60 minutes, in the presence of a gas comprising oxygen and water vapor, to obtain a synthesis gas comprising CO and H c. combusting the synthesis gas at a temperature of from 850 to 1,200° C. to obtain a combustion product and recycling the combustion product to the drying and the gasifying; and d. vitrifying the solid residue with a plasma torch, at a temperature of from 1,300 to 1,500° C., thereby making the solid residue inert.