| 摘要 |
At the state of the art, industrial and urban chimneys are a simple way for the smokes to the atmosphere, since purification of the smoke is realized only in those industrial plants with a filtering system embedded into the plant themselves, while the cooling of the smoke is simply obtained by heat exchangers that pre-heat the combustive air that supply burners and furnaces. The C02 is a perfectly oxidized gas and thus it cannot be eliminated only by air filtering, nor reduced with electrostatic filtering. Therefore, the industrial and urban chimneys (CCPC) are the first plants that will allow to recover C02 and, if necessary, to complete reduction of NOx and SOx, ash and part of the heat scattered in the atmosphere. The neutralization of C02 and most of the components harmful for environment will take place in other plants which follows the capture, but in the chimneys most of the heat can be transferred to the water through a heat exchanger embedded into the exhaust pipes suitably modified. The water so obtained can be used to heat large digesters and industrial greenhouses mainly for energy production, while in the urban setting, mainly for improving the efficiency of household boilers, supplied with preheated water. |
