| 摘要 |
<p>A system for eliminating paint solvents released during paint spraying operations (10) includes a liquid spray solvent stripper (64) comprising a multi-stage absorber unit through which the exhaust air is passed. A heating arrangement (94, 100) is provided for regenerating the solvent absorber liquid and is arranged to recover heat from an incinerator (58) associated with a paint drying oven (54). Solvent vaporized during regeneration is passed over cooling coils (106) in a condensing chamber (104). The exhaust air is first treated (20) with water to remove paint solids, a proportion of the solvent vapours passing into solution with the treatment water. A water solvent stripper (130) is provided for applying a vacuum to the water circulated from a paint solid removal unit (44) to cause the solvent to be vaporized out of solution, the vapours being condensed by cooling coils (142) in a condensing chamber (134). The air and water stripper condensing chambers (104, 134) are purged by a vacuum pump (118) directing the uncondensed solvent vapours and non-condensables into the incinerator (58). <IMAGE></p> |
