| 摘要 |
PURPOSE:To carry out stable operation for a long period by passing the exhaust gas through a filter element and a rotary regenerating heat-exchanger mounting a primary catalyst, circulating a part of gas through the painting dryer furnace, and discharging the other part of gas to the outside of the system after the oxidation treatment by a secondary catalyst. CONSTITUTION:The exhaust gas which flows out from the painting dryer furnace 21 is passed through a 1st flow passage 22, entered the rotary regenerating heat- exchanger 25, then passed through a flow passage A and the dust is removed by the filter element 27. The gas is then heated by a heat transfer element 26, passed through the primary catalyst 28 where inflammable elements are oxidized, and then entered a flow passage B through a reversing passage 31 and cooled by the heat transfer element 26 after passing through the primary catalyst 28. Then, the exhaust gas is passed through a 2nd flow passage 35, and a part of the gas is circulated through the painting dryer furnace 21 to circulate, and the other part is streamed into a 3rd flow passage 37 branched from the flow passage 35, passed through the secondary catalyst 39 where a small amount of inflammable elements are oxidized, and discharged to the outside of the system. |
