| 摘要 |
Device for considerably reducing atmospheric pollution by gas discharges (9) produced during stripping, regeneration or stabilisation operations on petrochemicals, hydrocarbons or other, thermally fragile or otherwise, whilst keeping the temperature in the reboiler (5) lower than the hottest column base. A third gaseous or vaporisable fluid (10) is introduced at the level of the reboiler, to reduce the partial pressure of the undesirable components to be eliminated and thus the thermodynamic equilibrium temperature. The gaseous discharge eliminated with the third fluid are recycled at the head of the column and incinerated by controlled combustion in a low NOx boiler, which heats the heat-bearing fluid (11) in the heater (13) which warms the reboiler, using a plate exchanger with a very high exchange coefficient, thus avoiding too high temperatures in the heat-bearing fluid which could create hot spots allowing thermal degradation of the product treated in the column.
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