Process for the combustion of coke present on solid particles and for the production of recoverable heat from hydrocarbon-bearing solid particles and apparatus therefor

Abstract From the Canadian patent

Process and apparatus for the combustion of coke present on solid particles from which hydrocarbons have been substantially removed by heating, and for the production of recoverable heat from hydrocarbon-bearing solid particles in a series of at least, two combustion stages. The process comprises the following steps: a) feeding the solid particles into the first combustion stage of the series through an inlet near its bottom; b) introducing an oxygen-containing gas into the bottom of each combustion stage, whereby at least part of the particles are entrained towards an upper outlet and at least part of the coke on the particles is combusted, yielding a flue gas; c) passing the particles and …