| 摘要 |
<p>Method and apparatus for oxidation of black liquor form an alkaline process for pulping cellulosic material in A fluid bed furnace wherein indirect heat exchange means are provided within the fluid bed in the furnace, means are provided to sense the temperature in the bed and to control the flow of fluid through the heat exchanger in accordance with the temperature sense thereby to maintain the temperature in the bed substantially constant at a preselected value to form pellets of the inorganic chemical to be recovered and to recover heat from the bed.</p> |
