| 摘要 |
<p>A device for cleaning caustic liquor mixtures containing lime, comprising a closed chamber (7) for the caustic liquor mixture to be cleaned with an upper horizontal wall (5), to which a number of hollow filter elements (8) are attached. The filter elements extend downwardly in the chamber and communicate with the latter via a great number of filtrate holes (9) in the filter elements. Each filter element is provided with a filter material (10), which covers the filtrate holes. According to the invention the filtrate holes (9) are arranged below a horizontal plane (P), which is situated below and at a distance from the horizontal wall (5) such that during operation gas is enclosed between the wall and the uncleaned caustic liquor mixture. As a result the caustic liquor mixture in the chamber is prevented from contacting the wall (5), which counteracts the formation of permanent tight layers of lime on the filter material.</p> |
