Precipitation tank for precise solid-liquid separation of 1,3-cyclohexanedione

Abstract

The invention discloses a depositing tank used for accurate separation of 1, 3-cyclohexanedione solid and liquid. The depositing tank comprises a tank body, a manhole is formed in the middle of the top of the tank body, a feeding port and an exhaust port are formed in the left and right sides of the manhole, a discharging port is formed in the middle of the bottom of the tank body, a first semicircular through hole is formed in the discharging port, a valve is arranged below the first semicircular through hole, a clear liquid flow guiding tube is arranged inside the discharging port and comprises an inner tube and an outer tube, the inner tube is sleeved with the outer tube in an interference fit mode, a long-strip-shaped through hole is formed in the side wall of the outer tube, and a third semicircular through hole perpendicular to the long-strip-shaped through hole is formed below the long-strip-shaped through hole. The inner tube and the outer tube form the clear liquid flow guiding tube, clear liquid is discharged out of the tank from top to bottom through rotation, only clear liquid is mixed few sediments, in this way, secondary treatment is not needed, material waste is reduced, and production efficiency is remarkably improved.

Description

technical field [0001] The invention relates to a precipitation tank, in particular to a precipitation tank 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 liquid in th...

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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 for the precise solid-liquid separation of 1,3-cyclohexanedione, which solves the problem that part of the liquid in the existing feed-liquid settling tank is mixed with the sediment, which needs to be carried out The problem of secondary treatment or material liquid waste

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