| 摘要 |
<p>The invention refers to a method of purifying flue gases from refuse incineration by cooling and of recovering heat energy as well as to an arrangement for performing the method. According to the mentioned method the flue gases are cooled in three stages, with the most beneficial structural material with regard to the temperature range, process conditions, and economy being selected in each cooling stage among the materials glass, plastic or alloyed steel. The sizes of the various cooling surfaces are determined such, that the temperatures of the flue gases immediately before the last cooling stage lie closely above the water dew point. The arrangement disclosed by the invention comprises a first cooling member (2), a second cooling member (3) connected thereto, and a third cooling member (4) connected to the latter and having its outlet connected to a droplet separator (5) which is followed by a flue gas fan (6) which in turn is connected to a chimney (7). The first (2) and second (3) cooling members can preferably mainly consist of glass and plastic and the third cooling member (4) can mainly consist of alloyed steel.</p> |
