A kind of sedimentation tank for continuously collecting p-hydroxybenzoic acid crystals
A p-hydroxybenzoic acid and sedimentation tank technology, applied in the field of sedimentation tanks, can solve the problems of reducing production efficiency, consuming more time and manpower, etc.
Active Publication Date: 2017-08-25
JINING XINRUIDA INFORMATION TECH CO LTD
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Problems solved by technology
However, since the centrifuge continuously discharges the p-hydroxybenzoic acid solution, the precipitated p-hydroxybenzoic acid crystals in the sedimentation tank will accumulate more and more, forcing the centrifuge to stop production, and the p-hydroxybenzoic acid crystals in the sedimentation tank must be cleaned up. , the centrifuge can restart production, which not only consumes more time and manpower, but also reduces production efficiency
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[0017] See attached figure 1 and combine figure 2 , 3 , the continuous collection p-hydroxybenzoic acid crystal sedimentation tank of the present embodiment comprises a precipitation crystallization tank 10 and a crystal collection and delivery device, and the precipitation crystallization tank 10 is provided with a conical bottom 11, and a lateral direction is provided at the bottom of the conical bottom 11. Collecting tank 12, the crystal collection and conveying device includes a horizontal pushing auger 20 and a lifting dehydrator 30, the horizontal pushing auger 20 is installed in the horizontal collecting tank 12 and is provided with a horizontal strand driving machine 21, and the lifting dehydrating machine 30 comprises a vertical feeding pipe 31, a vertical auger 32, a pedestal type hopper storehouse 33 and a dehydration hopper 34, and the vertical feeding pipe 31 is installed vertically at the end of the sedimentation crystallization tank 10 and pushes the auger 20 ...
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A sedimentation tank capable of continuously collecting PHBA (p-hydroxybenzoic acid) crystals comprises a sedimentation and crystallization tank and a crystal collecting and conveying device, wherein the sedimentation and crystallization tank is provided with a conical tank bottom, a transverse collecting tank is arranged at the bottom of the conical tank bottom, the crystal collecting and conveying device comprises a transverse push screw conveyer and a lifting dehydrator, the lifting dehydrator comprises a vertical conveying pipe, a vertical screw conveyer, a base frame type hopper bin and a dehydration hopper, the vertical conveying pipe is vertically mounted at one end of the sedimentation and crystallization tank, the base frame type hopper bin is mounted at the top of the vertical conveying pipe, and the dehydration hopper is sleeved with the base frame type hopper bin. The sedimentation tank is connected with a water drain pipe of a centrifuge to continuously collect the PHBA crystals settled at the bottom of the sedimentation and crystallization tank, the dehydration hopper dehydrates the crystals and then conveys the crystals outside timely, and the PHBA crystals in the sedimentation tank can be cleaned up while halt of the centrifuge is not required. Therefore, the sedimentation tank is reasonable in structure, convenient to control and capable of effectively improving the production efficiency.
Description
technical field [0001] The invention belongs to a settling tank, in particular to a settling tank for continuously collecting p-hydroxybenzoic acid crystals. Background technique [0002] At present, in the process of producing p-hydroxybenzoic acid products, the p-hydroxybenzoic acid solution discharged from the centrifuge must be crystallized and precipitated in a sedimentation tank to collect part of the p-hydroxybenzoic acid contained in the solution. However, since the centrifuge continuously discharges the p-hydroxybenzoic acid solution, the precipitated p-hydroxybenzoic acid crystals in the sedimentation tank will accumulate more and more, forcing the centrifuge to stop production, and the p-hydroxybenzoic acid crystals in the sedimentation tank must be cleaned up. , The centrifuge can restart production, which not only consumes more time and manpower, but also reduces production efficiency. Contents of the invention [0003] In order to solve the problem that the ...
Claims
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IPC IPC(8): B01D21/02B01D21/24B01D9/02C07C51/43C07C65/03
CPCB01D9/0059B01D9/04B01D21/02B01D21/245B01D2009/0086C07C51/43C07C65/03
Inventor 杨建忠
Owner JINING XINRUIDA INFORMATION TECH CO LTD