Method and apparatus for cleaning a vapour

Details Method and apparatus for cleaning a vapour Method and apparatus for cleaning a vapour

B - Operations, Transporting

01

D

B01D 1/28 (2006.01) B01D 47/12 (2006.01) B01D 53/38 (2006.01) B01D 53/58 (2006.01) B01D 53/72 (2006.01)

Patent

CA 2195298

A method is disclosed by which vapour is cleaned of gaseous impurities during evaporation of polluted liquids. Vapour is conducted via a boiler, a compressor to a heat exchanger (12) in which condensation takes place. In order to clean the vapour, a scrubber (14) is arranged between the boiler (3) and the heat exchanger (12), in which the vapour is scrubbed in several steps (17, 18) at different pH values. Thus, the step (17) is an acid step, whereas the step (18) is an alkaline step. In this manner, the vapour for condensation may be conducted into the heat exchanger and be condensed in order to remove a clean condensate without pollution of acid or alkaline substances.

L'invention concerne un procédé visant à épurer de la vapeur d'impuretés gazeuses pendant l'évaporation de liquides pollués. La vapeur est conduite de la chaudière par un compresseur jusqu'à un échangeur thermique (12) dans lequel a lieu la condensation. Afin d'épurer la vapeur, un épurateur (14) est agencé entre la chaudière (3) et l'échangeur thermique (12), dans lequel ladite vapeur est épurée en plusieurs étapes (17, 18) à différentes valeurs de pH. Ainsi, l'étape (17) est une étape acide alors que l'étape (18) est une étape alcaline. Par conséquent, la vapeur destinée à une condensation peut être conduite jusque dans l'échangeur thermique et condensée afin d'éliminer un condensat épuré sans pollution par des substances acides ou alcalines.

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