| 摘要 |
A gas scrubbing and scrubbing liquor recovery apparatus (1) for the removal under wet scrubbing conditions of entrained particles and/or other contaminants from a contaminated gas or vapour phase. The apparatus is of the type including a scrubbing liquor sump (2) and a gas or vapour scrubbing zone, wherein during use of the apparatus, the gas or vapour phase is intimately contacted with scrubbing liquor derived from the sump, after which the scrubbing liquor loaded with contaminants from the gas or vapour phase is separated from the gas or vapour phase and returned to the sump for reuse after clarification by separation of a distinct phase of the contaminants therefrom. The apparatus includes an external contaminant separator and concentrator vessel (33), having a first compartment (53), a second compartment (50) and a partition (37) between the first and second compartments. Communication passage means are provided between a region of the first compartment where scrubbing liquor at least partly freed of the distinct phase of contaminant is likely to accumulate during use of the apparatus, on the one hand, and the second compartment on the other hand. Withdrawal means (46, 47, 48) adapted to withdraw contaminant-loaded scrubbing liquor and contaminants from a region of the sump where contaminants tend to accumulate as a phase distinct from the scrubbing liquor phase are also provided. The withdrawal means discharge into the first compartment of the separator and concentrator vessel. The apparatus includes return ducting (51) adapted to return at least partly decontaminated scrubbing liquor from the second compartment to the sump. |
