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Conical extraction element with double flow channels and flow-through extraction method

A double-channel, conical technology, applied in chemical instruments and methods, solvent extraction, separation methods, etc., can solve problems such as low operating flexibility, unstable coacervate, and strict design requirements for sieve tray towers, so as to increase extraction The effect of increasing the speed and improving the effective utilization rate

Active Publication Date: 2018-06-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to achieve higher extraction efficiency, it is necessary to keep the pore flow velocity within a reasonable range. If the flow rate changes greatly during operation, the coacervate layer will be unstable. Therefore, the design requirements of the sieve tray column are relatively strict and the operating flexibility is not high.

Method used

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  • Conical extraction element with double flow channels and flow-through extraction method
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  • Conical extraction element with double flow channels and flow-through extraction method

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Effect test

Embodiment 1

[0042] Figure 1-2 Represents a structural diagram of a dual-channel conical extraction element. Among them, the outer diameter of the bottom end of the upper conical cover plate 1 is 100 mm, the height of the conical cover plate 1 is 120 mm (the ratio of height to diameter is 1.2:1); the height of the conical baffle plate 2 is 78 mm (ratio to the height of the cover plate 1). 0.65:1); the height of the circular connecting pipe 4 is 40mm, and the height of the conical deflector 3 is 16mm (the height ratio of the connecting pipe 4 is 0.4:1); the lower side wall of the circular connecting pipe 4 is uniformly opened There are 24 rectangular flow-limiting holes 7 in a circle, the height of the rectangular holes is 10mm, and the width is 6mm.

[0043] image 3 It is the expansion diagram of the conical cover plate 1, which is a fan-shaped sieve plate, and the distribution holes 6 on it are circular sieve holes, the specification is φ4~5mm, the hole spacing is 15mm, arranged in an...

Embodiment 2

[0047] Figure 1-2 Represents a structural diagram of a dual-channel conical extraction element. Among them, the outer diameter of the bottom end of the upper conical cover plate 1 is 80 mm, the height of the conical cover plate 1 is 84 mm (the ratio of height to diameter is 1.05:1); the height of the conical baffle plate 2 is 50 mm (ratio to the height of the cover plate 1 0.6:1); the height of the circular connecting pipe 4 is 36mm, and the height of the conical deflector 3 is 18mm (the height ratio of the connecting pipe 4 is 0.5:1); the lower side wall of the circular connecting pipe 4 is evenly opened There are 24 rectangular flow-limiting holes 7 in a circle, the height of the rectangular holes is 9mm, and the width is 5mm.

[0048] image 3 It is the expansion diagram of the conical cover plate 1, which is a fan-shaped sieve plate, and the distribution holes 6 on it are circular convex holes, the specification is φ3~4mm, the hole spacing is 12mm, arranged in an equila...

Embodiment 3

[0052] Figure 1-2 Represents a structural diagram of a dual-channel conical extraction element. Among them, the outer diameter of the bottom end of the upper conical cover plate 1 is 60 mm, the height of the conical cover plate 1 is 75 mm (the ratio of height to diameter is 1.25:1); the height of the conical baffle plate 2 is 40 mm (ratio to the height of the cover plate 1 0.53:1); the height of the circular connecting pipe 4 is 30mm, and the height of the conical deflector 3 is 18mm (the vertical height ratio of the connecting pipe 4 is 0.6:1); the lower side wall of the circular connecting pipe 4 A circle of rectangular flow-limiting holes 7 is evenly opened, and the total number is 24. The height of the rectangular holes is 8 mm, and the width is 4 mm.

[0053] Figure 4 It is the expansion diagram of the conical cover plate 1, which is a fan-shaped sieve plate, and the distribution holes 6 on it are circular sieve holes, the specification is φ2~3mm, the hole spacing is ...

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Abstract

The invention discloses a conical extraction element with double flow channels and a flow-through extraction method. The extraction element consists of three parts including an upper-layer conical cover plate, a middle-layer conical baffle plate and a lower-layer conical flow guiding plate having the same central axis, a vertically-arranged round connection pipe and a horizontally-arranged annularsupport plate, wherein an annular gap flow channel is formed between the cover plate and the baffle plate; the bottom part of the flow channel, close to the upper side wall of the round connection pipe, is sealed; a dispersion phase fluid flows through the flow channel and then penetrates through distribution holes formed in the cover plate and then undergoes contact mass transfer with an external continuous phase; an annular gap flow channel is also formed between the baffle plate and the flow guiding plate; flow limiting holes formed in a part where the bottom part of the flow channel is close to lower side walls of the round connection pipe are communicated with the outside of the extraction element; the outer continuous phase fluid penetrates through the flow limiting holes, then flows through the flow channel and enters into the extraction element. The conical extraction element with the double flow channels disclosed by the invention has the advantages of wide operation elasticity, high space utilization ratio, large mass transfer velocity and the like.

Description

technical field [0001] The invention relates to a double-channel conical extraction element and a through-flow extraction method, which are used for the countercurrent extraction process of the liquid-liquid two-phase under the condition of no downcomer, and are specially provided for the chemical separation field, which is different from conventional packing extraction and sieve plate extraction. An extraction method with greater operational flexibility and high stability. Background technique [0002] Packed towers and sieve plate towers are commonly used in chemical production to complete the liquid-liquid two-phase countercurrent extraction process. Packed towers generally use special metal ring packing with cutting effect, which can effectively divide the dispersed phase into small droplets to achieve a larger two-phase contact surface. However, due to the lack of effective coagulation of the dispersed phase, the concentration distribution of the dispersed phase varies...

Claims

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Application Information

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IPC IPC(8): B01D11/04
CPCB01D11/043
Inventor 王成习
Owner ZHEJIANG UNIV
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