Abstract: The present invention discloses systems and methods for supplying hot water for primary extraction in the oil sands bitumen extraction process. Direct contact process and method for producing hot water using mature fine tailings are provided by employing a double staged submerge arrangement with a thickener vessel containing a submerged fuel burner and a hot water vessel containing a submerged fuel burner, a flash submerged arrangement with a flash concentrator vessel containing or adjacent to a fuel burner and a hot water vessel containing a submerged fuel burner or a triple cascade arrangement with a flash concentrator vessel, a thickener vessel containing a submerged fuel burner and a hot water vessel containing a submerged fuel burner.

Abstract: A system for carbon dioxide removal from product from a direct contact steam generation system is provided. The system comprises a direct contact steam generation system, a pressurized heat recovery system, and a CO2 separation system, wherein the direct contact steam generation system converts a gaseous, liquid or solid fuel, in the presence of oxygen, using a moderate water, to produce a mixed vapour stream to be then led into the pressurized heat recovery system to produce a partially condensed product, which is led into the CO2 separation system to reduce the CO2 content to produce a CO2-lean liquid product, and the pressurized heat recovery system utilizes latent heat of the mixed vapour stream to produce a lower pressure vapour stream from the CO2-lean liquid product exiting the CO2 separation system.

Abstract: A conversion burner, a system of conversion burners, and a method of conversion of a solid fuel selected from at least one of biomass and peat. The burner is constructed and arranged to be affixed to a combustor, and comprises a housing defining a burner chamber; a grate within the burner chamber defining an upper chamber region and a lower chamber region; at least a first solid fuel inlet; at least a first air inlet operatively connected to the upper chamber region and connectable to a first air source; a product gas outlet operatively connected to the combustion region of the combustor; and at least one waste outlet. The product gas is delivered to the combustor for firing or co-firing, overcoming fouling problems which result from direct delivery of solid fuel to the combustor, and problems raised by remote conversion or storage of solid fuel.