Method for the low-temperature distillation of finely granular bituminous materials which form a pulverulent residue in the process

Abstract

Abstract IN A PROCESS FOR LOW TEMPERATURE DISTILLATION OF FINELY GRANULAR BITUMINOUS OR PETROLIFEROUS RAW MATERIALS FORMING A PULVERULENT RESIDUE DURING THE PYROLYSIS WHICH COMPRISES: (A) CIRCULATING A HEAT CARRIER BETWEEN A DISTILLATION ZONE AND A HEATING ZONE; (B) INTRODUCING THE RAW MATERIAL INTO THE DISTILLATION ZONE AND HEATING IT THEREIN FOR SAID DISTILLATION WITH THE HEAT CARRIER, AND FOR FORMATION THEREFROM OF DISTILLATION GASES SAID PULVERULENT RESIDUE; (C) WITHDRAWING DISTILLATION GASES FROM THE DISTILLATION ZONE; (D) WITHDRAWING THE HEAT CARRIER AND PULVERULENT DISTILLATION RESIDUE IN ADMIXTURE FROM THE DISTILLATION ZONE; (E) PNEMATICALLY CONVEYING SAID ADMIXTURE THROUGH THE HEATING ZONE WITH A PROPELLANT GAS AND REHEATING THE HEAT CARRIER THEREIN; AND (F) RETURNING THE HEATED CARRIER TO THE DISTILLATION ZONE; THE IMPROVEMENT WHICH COMPRISES (G) SEPARATING THE EFFLUENT OF THE HEATING ZONE, COMPRISING SAID HEATED CARRIER, PULVERULENT DISTILLATION RESIDUE AND PROPELLANT GAS, INTO PROPELLANT GAS AND A MIXTURE OF HEATED CARRIER PARTICLES AND PULVERULENT DISTILLATION RESIDUE, AND (H) SIFTING PULVERULENT DISTILLATION RESIDUE FROM SAID MIXTURE OF HEATED CARRIER AND PULVERULENT MATERIAL TO PROVIDE THE HEATED CARRIER RETURNED TO THE DISTILLATION ZONE IN STEP (F). APPARATUS FOR PRACTICE OF THE PROCESS IS ALSO DISCLOSED.

Inventors

• 👤 Roland Rammler
• 👤 Paul Schmalfeld

Bibliographic Details