| 摘要 |
<p>Process comprising an operation of acidic washing containing urea in a scrubber (9) followed by an alkaline washing operation in a scrubber (10) with a view to removing these nitrogen oxides from the effluent. The residual liquids are collected and recirculated from vessels (2, or 8) and can be mixed in a receptacle (18) at the end of the operation with a view to being neutralised. <IMAGE></p> |
