CN212039075U - High-efficient whirl removes foam rectification column tray - Google Patents

Abstract

The utility model provides a high-efficient whirl defoaming rectification tower tray relates to the rectification equipment field, including a plurality of rectification mechanisms, rectification mechanism includes the downcomer, be equipped with the tower tray between two adjacent downcomers, the upper surface of tower tray is equipped with a plurality of demisters, the middle part of tower tray runs through in vertical direction and is equipped with out the liquid hole, the top of honeycomb duct is connected to the bottom of tower tray, the bottom opening part of honeycomb duct is corresponding with the position of the open-top part of another rectification mechanism's downcomer, the demister includes the cap, the inside draft tube that is equipped with of cap, form into the toper cavity between the top of draft tube and the inside wall of cap, be equipped with the gyration passageway between the lateral wall of draft tube and the cap, the top of demister is equipped with the sieve, the both ends of the upper surface of sieve all are equipped with the overflow weir, the sieve is equipped with the liquid receiving dish, the upper surface of liquid receiving. The utility model discloses gas, liquid phase separation are effectual, and mass transfer efficiency is high.

Description

High-efficient whirl removes foam rectification column tray

Technical Field

The utility model belongs to the rectification equipment field, concretely relates to high-efficient whirl removes foam rectification tower tray.

Background

The rectifying tower is a tower-type gas-liquid contact device for rectification, and utilizes the property that each component in the mixture has different volatility, namely the vapor pressure of each component is different at the same temperature, so that the light component (low-boiling-point substance) in the liquid phase is transferred into the gas phase, and the heavy component (high-boiling-point substance) in the gas phase is transferred into the liquid phase, thereby realizing the purpose of separation. However, the existing trays usually have entrainment phenomenon, and entrainment refers to the phenomenon that liquid on the liquid receiving tray is entrained to the previous liquid receiving tray by airflow in the form of droplets. Entrainment on the liquid receiving tray can cause back mixing of the liquid phase between the plates, which reduces the plate efficiency. In severe cases, flooding will occur, so the amount of entrainment is limited.

Therefore, a high-efficiency cyclone defoaming rectification tray with good gas-liquid phase separation effect and high mass transfer efficiency is urgently needed to be provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high-efficient whirl removes foam rectification tower tray to the not enough of current high-efficient whirl removes foam rectification tower tray.

The utility model provides a following technical scheme:

a high-efficiency rotational flow defoaming rectification tower tray comprises a plurality of rectification mechanisms, each rectification mechanism comprises a downcomer, a tower tray is arranged between every two adjacent downcomers, a plurality of demisters are arranged on the upper surface of each tower tray, a liquid outlet hole is formed in the middle of each tower tray in a penetrating mode in the vertical direction, the bottom of each tower tray is connected with the top of a flow guide pipe, the position of each liquid outlet hole corresponds to the position of an opening at the top of the flow guide pipe, an opening at the bottom of each flow guide pipe corresponds to the position of an opening at the top of the downcomer of the other rectification mechanism, each demister comprises a cap cover, a gas riser is arranged inside each cap, a conical cavity is formed between the top of each gas riser and the inner wall of the top of each cap, a rotary channel is arranged between the outer side wall of each gas riser and each cap, a sieve plate is arranged above each demister, and overflow, the sieve plate is provided with a liquid receiving disc, and the upper surface of the liquid receiving disc corresponds to the position of the opening of the flow guide pipe of the rectifying mechanism above the liquid receiving disc.

Preferably, both ends of the sieve plate are connected with the outer side wall of the downcomer and the tower body supporting piece through a plurality of bolts, the sieve plate is provided with a plurality of sieve pores in the vertical direction, and the cross section of each sieve pore is circular.

Preferably, the bottom of said chimney is connected to the upper surface of said tray.

Preferably, a wire mesh is arranged in the conical cavity.

Preferably, the rotary channel is provided with helical blades.

The utility model has the advantages that: the overflow weir has the functions of keeping the liquid level height on the sieve plate and promoting the liquid flow to be uniformly distributed, the down-flow pipe is a channel through which liquid or heavy phase flows, the lower part of the down-flow pipe is connected with a liquid receiving disc, gas enters a conical cavity at the top of the demister from an air lift pipe, gas phase is condensed on the inclined plane of the conical cavity and enters a rotary channel along the inclined plane of the conical cavity, the gas can generate centrifugal force after passing through the rotary channel, liquid drops carried in the gas are separated under the action of the centrifugal force, the cross section of the outer wall of the rotary channel is of a plum blossom-shaped structure, the liquid condensation is facilitated, the separated gas enters the upper layer through the sieve plate, the condensed liquid drops are collected in the demister and enter the down-flow pipe of the lower layer through a.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural diagram of a demister according to the present invention;

fig. 3 is a schematic diagram of the structure of a sieve plate and a tray.

Labeled as: 1. a downcomer; 2. a wire mesh; 3. a sieve plate; 4. an overflow weir; 5. a flow guide pipe; 6. a cap; 7. a gas lift pipe; 8. a conical chamber; 9. a revolving channel; 10. a demister; 11. a liquid outlet hole; 12. a tray.

Detailed Description

As shown in fig. 1 to 3, a high-efficiency cyclone defoaming and rectifying tray comprises a plurality of rectifying mechanisms, each rectifying mechanism comprises a downcomer 1, a tray 12 is arranged between two adjacent downcomers 1, a plurality of demisters 10 are arranged on the upper surface of each tray 12, a liquid outlet hole 11 is arranged in the middle of each tray 12 in a vertical direction in a penetrating mode, the bottom of each tray 12 is connected with the top of a flow guide pipe 5, the position of each liquid outlet hole 11 corresponds to the position of the top opening of the flow guide pipe 5, the position of the bottom opening of each flow guide pipe 5 corresponds to the position of the top opening of each downcomer 1 of the other rectifying mechanism, each demister 10 comprises a cap 6, a gas lift pipe 7 is arranged inside each cap 6, a tapered cavity 8 is formed between the top of each gas lift pipe 7 and the inner wall of each cap 6, a rotary channel 9 is arranged between the outer side wall of each gas lift pipe 7 and each cap 6, a sieve plate 3 is arranged above, the sieve plate 3 is provided with a liquid receiving disc, and the upper surface of the liquid receiving disc corresponds to the position of the opening of the draft tube 5 of the rectifying mechanism above the liquid receiving disc.

Both ends of the sieve plate 3 are connected with the outer side wall of the downcomer 1 and the tower body supporting piece through a plurality of bolts, the sieve plate 3 is provided with a plurality of sieve pores in the vertical direction, and the cross section of each sieve pore is circular. The bottom of the chimney 7 is connected to the upper surface of the tray 12. The wire mesh 2 is arranged in the conical cavity 8 to play a role of defoaming. The rotary channel 9 is provided with helical blades.

The utility model discloses a use-way does: the overflow weir 4 has the functions of keeping the liquid level height on the sieve plate 3 and promoting the liquid flow to be uniformly distributed, the down-flow pipe 1 is a channel through which liquid or heavy phase flows and is connected with a liquid receiving disc below, gas enters a conical chamber at the top of the demister 10 through the gas riser 7, gas phase is condensed on the inclined plane of the conical chamber and enters the revolving channel 9 along the inclined plane of the conical chamber, the gas can generate centrifugal force after passing through the revolving channel 9, liquid drops carried in the gas are separated under the action of the centrifugal force, the cross section of the outer wall of the revolving channel 9 is of a plum blossom-shaped structure, the liquid condensation is facilitated, the separated gas enters the rectifying mechanism on the upper layer through the sieve plate 3, the condensed liquid drops are collected in the demister 10 and enter the down-flow pipe 1 on the lower layer through the flow guide pipe 5.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A high-efficiency rotational flow defoaming rectification tower tray is characterized by comprising a plurality of rectification mechanisms, each rectification mechanism comprises a downcomer, a tower tray is arranged between every two adjacent downcomers, a plurality of demisters are arranged on the upper surface of each tower tray, a liquid outlet hole penetrates through the middle of each tower tray in the vertical direction, the bottom of each tower tray is connected with the top of a flow guide pipe, the position of each liquid outlet hole corresponds to the position of an opening at the top of the flow guide pipe, an opening at the bottom of each flow guide pipe corresponds to the position of an opening at the top of the downcomer of the other rectification mechanism, each demister comprises a cap cover, a gas riser is arranged inside each cap cover, a tapered cavity is formed between the top of each gas riser and the inner wall of the top of each cap cover, a rotary channel is arranged between the outer side wall of each gas riser and each cap cover, and a, overflow weirs are arranged at two ends of the upper surface of the sieve plate, a liquid receiving disc is arranged on the sieve plate, and the upper surface of the liquid receiving disc corresponds to the position of the opening of the flow guide pipe of the rectifying mechanism above the liquid receiving disc.

2. The tray as claimed in claim 1, wherein the sieve plate has a plurality of holes in the vertical direction, and the cross section of the holes is circular.

3. The tray according to claim 2, wherein the bottom of said chimney is connected to the upper surface of said tray.

4. The tray as set forth in claim 3, wherein a wire mesh is provided in the conical chamber.

5. The tray as set forth in claim 4, wherein the turning channel is provided with helical blades.

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