Precipitation tank without vent for precise solid-liquid separation of 1,3-cyclohexanedione

Abstract

The invention discloses a sedimentation tank for 1,3-cyclohexanedione solid-liquid accurate separation and without a vent hole; the sedimentation tank includes a tank body, the middle position of the top of the tank body is equipped with a manhole, the left side and the right side of the manhole are equipped with a feeding port and an exhaust port respectively, and the middle position of the bottom of the tank body is equipped with a discharging port; the discharging port is equipped with a first semi-arc through hole; a valve is arranged below the first semi-arc through hole; the discharging port is internally equipped with a clear liquid diversion pipe; the clear liquid diversion pipe includes an inner pipe and an outer pipe, the outer pipe is sleevedly arranged outside the inner pipe, the inner pipe and the outer pipe are in interference fit, the side wall of the outer pipe is equipped with a long-strip through hole, and a third semi-arc through hole perpendicular to the long-strip through hole is formed below the long-strip through hole. The sedimentation tank for 1,3-cyclohexanedione solid-liquid accurate separation and without the vent hole adopts the inner pipe and the outer pipe as the clear liquid diversion pipe, a clear liquid is discharged out of the tank from up to down through rotation, the clear liquid and sediments are only in precious little mixing, secondary processing is not required, the waste of materials is reduced, and the production efficiency is improved significantly.

Description

technical field [0001] The invention relates to a settling tank, in particular to a settling tank without vent holes for precise solid-liquid separation of 1,3-cyclohexanedione. Background technique [0002] In industrial production, sedimentation tanks are often used to separate liquid and sediment. For example, in the production of 1,3 cyclohexanedione, it is used to separate the feed liquid and the metal catalyst. The sediment is distributed in the bottom area of ​​the tank after precipitation due to its large specific gravity. . The general-purpose sedimentation tank is to open the bottom valve and release the sediment first, and then switch to discharge the supernatant after the sediment is drained. The defect of this method is: there is no obvious boundary between the conversion of the sediment and the supernatant, and the sediment located vertically above the discharge valve port flows out first under the action of gravity and water flow, and then the supernatant liq...

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Problems solved by technology

[0003] According to the problems existing in the prior art, the present invention proposes a settling tank without vent holes for precise solid-liquid separation of 1,3-cyclohexanedione, which solves the problem of partial clear liquid and precipitation in the existing feed-liquid settling tank The mixing of materials requires secondary treatment or the waste of materials and liquids

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