| 摘要 |
An integrated system, process and apparatus are provided for the efficient and effective recovery of spent pulping liquors, particularly kraft black liquor, whereby in an initial stage concentrated spent liquor is subjected to combustion in a reactor equipped with a plurality of particulate materials, at least one of which is of finer particle size than the other, preferably subjecting a portion of said particulate materials to at least one further treatment in a fluidized bed unit, and treating the inorganic solid combustion products in a reducing atmosphere. |
