| 摘要 |
PURPOSE:To enable re-utilization of off gas completed in its reaction after the dust consisting of metallic compound is removed, by providing a dust filter for collecting metal compounds being peeled off from a reaction type phosphoric acid collection part, and thus floating in the off gas completed in its reaction on the off gas outlet side of a casing. CONSTITUTION:A reaction type phosphoric acid collector 40 comprises a tower shape container 41 serving as a casing, a reaction type collector part 42 consisting of a metal-filled material layer such as fire mesh demister or steel wool in the tower shape container 41, and a dust filter 44 protruded and provided on an outlet side line 41B of an off gas 21F or 31A after reaction attachable/detachable. A fuel electrode off gas 2F0 or air electrode off gas 3A0 flown from an off gas inlet 41A into the container 41 passes through the collector part 42, and metal components are adhered to the filled material layer, and are solidified through reaction. The off gas 21F or 31A after reaction, the concentration of phosphoric acid of which is reduced, is then passed, and one of them is fed to a burner 2B while the other is fed to a formation water recovery heat exchanger 5, respectively. |
