CN215756539U

CN215756539U - Wastewater stripping tower

Info

Publication number: CN215756539U
Application number: CN202023196193.2U
Authority: CN
Inventors: 董仕宏; 吴倩倩; 李�灿; 何文
Original assignee: Suzhou Shijing Environmental Technology Co Ltd
Current assignee: Suzhou Shijing Environmental Technology Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2022-02-08
Anticipated expiration: 2030-12-25

Abstract

The utility model relates to a wastewater stripping tower which comprises a tower body and a tower plate arranged in the tower body, wherein the tower body is provided with a raw material inlet, a raw material outlet, a resolving agent inlet and a resolving agent outlet, the raw material inlet and the resolving agent outlet are positioned at the top of the tower body, the raw material outlet and the resolving agent inlet are positioned at the bottom of the tower body, the tower plate is provided with a plurality of through holes, and convex parts protruding upwards are arranged on the upper surface of the tower plate and among the through holes. According to the utility model, the convex part is designed to disturb the liquid to increase the turbulence degree of the liquid, the intensity of the reaction of gas and liquid and the reaction effect are enhanced, the heat transfer and mass transfer efficiency of the stripping reaction is effectively enhanced, the number of units in the stripping process is reduced, and the stripping efficiency is about 15-20% higher than that of the column plate in the prior art in the market under the condition of the same aperture ratio.

Description

Wastewater stripping tower

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to a wastewater stripping tower.

Background

The stripping process of the waste water is a unit operation for recovering the absorbed solute and separating the absorbent from the solute to obtain regeneration. In some cases, stripping may also be used to remove light components from the liquid, and stripping may be used in conjunction with the absorbent or alone.

The stripping equipment is usually called stripping tower, the stripping tower is a plate tower, the raw material enters the tower body from the top of the tower, the resolving agent (such as air) enters from the bottom of the tower, and the resolving agent and the waste water raw material undergo heat and mass transfer reaction through an opening on a tower plate, the components to be recovered or removed can be transferred from the liquid phase to the gas phase by utilizing the difference of partial pressure of the gas phase and the liquid phase, and the tower plate of the stripping tower is one of the vital components in the stripping tower, and the mass transfer and heat transfer efficiency in the stripping process is directly influenced.

The existing stripping tower plate has low heat transfer and mass transfer efficiency under the condition of certain aperture ratio under the common condition, and insufficient reaction of steam and waste liquid, thereby causing the problems of high stripping unit number, high stripping tower and more material consumption.

Disclosure of Invention

The utility model aims to provide a wastewater stripping tower.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a wastewater stripping tower, includes the tower body, sets up the tower plate in the tower body, the tower body have raw materials import, raw materials export, resolving agent import and resolving agent export, raw materials import, resolving agent export be located the tower body top, raw materials export, resolving agent import be located the bottom of tower body, the tower plate on seted up a plurality of through-holes, the upper surface of tower plate, a plurality of through-hole between be provided with the convex part that makes progress.

Preferably, the cross-sectional area of the bottom of the protrusion is smaller than the cross-sectional area of the top of the protrusion.

Further preferably, the convex portion is tapered from the bottom thereof to the top thereof.

Preferably, the convex part is a rectangular pyramid.

Preferably, the tray comprises a liquid inlet area, a resolution area and a downcomer, the liquid inlet area and the resolution area are separated by a first overflow plate, the resolution area and the downcomer are separated by a second overflow plate, and the through hole and the convex part are arranged in the resolution area.

Further preferably, the height of the first overflow plate is lower than the height of the second overflow plate.

Further preferably, said downcomer extends a distance downwardly from the face of said tray.

Further preferably, the tower plates are provided with a plurality of tower plates which are distributed from top to bottom, and the outlet of the downcomer of the tower plate positioned above is opposite to the liquid inlet area of the tower plate positioned below.

Preferably, said feed inlet is located directly above the liquid entry region of said tray; the raw material outlet is positioned below the outlet of the downcomer of the tower plate.

Preferably, one convex part is arranged between four through holes.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model increases the turbulence degree of the liquid by the design of the convex part to carry out turbulence on the liquid, enhances the intensity and reaction effect of the reaction of the gas and the liquid, effectively enhances the heat transfer and mass transfer efficiency of the stripping reaction, and reduces the unit number in the stripping process.

Drawings

FIG. 1 is a schematic front sectional view of the present embodiment;

FIG. 2 is a schematic perspective view of a tray in this example;

FIG. 3 is a schematic top view of a tray in this example;

FIG. 4 is an enlarged schematic view of the resolving area of the tray in this embodiment.

In the above drawings:

1. a tower body; 10. a raw material inlet; 11. a raw material outlet; 12. a resolving agent inlet; 13. a resolver outlet; 2. a column plate; 20. a liquid inlet zone; 21. a resolving area; 210. a through hole; 211. a convex portion; 22. a downcomer; 230. a first overflow plate; 231. a second overflow plate.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A wastewater stripper as shown in FIG. 1 comprises a tower body 1, and a tower plate 2 arranged in the tower body 1. Wherein:

the tower body 1 is provided with a raw material inlet 10, a raw material outlet 11, a resolving agent inlet 12 and a resolving agent outlet 13, wherein the raw material inlet 10 and the resolving agent outlet 13 are positioned at the top of the tower body 1, and the raw material outlet 11 and the resolving agent inlet 12 are positioned at the bottom of the tower body 1.

As shown in fig. 2: in this embodiment: the tray 2 comprises a liquid inlet zone 20, a resolution zone 21 and a downcomer 22, the resolution zone 21 is located between the liquid inlet zone 20 and the resolution zone 21, the downcomer 22 extends a distance downwards from the plane of the tray 2, and the cross-sectional shapes of the liquid inlet zone 20, the resolution zone 21 and the downcomer 22 are identical to the cross-sectional shape of the tower 1 and are illustrated as circles. The liquid inlet area 20 and the resolving area 21 are separated by a first overflow plate 230, the resolving area 21 and the downcomer 22 are separated by a second overflow plate 231, and the height of the first overflow plate 230 is lower than that of the second overflow plate 231. The tower plate 2 is formed by stamping and welding 316L stainless steel plates.

As shown in fig. 3 and 4: the tray 2 is provided with a plurality of through holes 210 on the analysis zone 21, a convex part 211 protruding upwards is arranged between the plurality of through holes 210 and the upper surface of the tray 2 of the analysis zone 21, and one convex part 211 is arranged between the four through holes 210. In this embodiment: the cross-sectional area of the bottom of the protrusion 211 is smaller than the cross-sectional area of the top thereof, further: the protrusions 211 are tapered from their bottom to their top, and the illustrated protrusions 211 are in the shape of a rectangular pyramid (pyramid).

The tower plate 2 is provided with a plurality of, and a plurality of tower plates 2 distribute from last to bottom, and raw materials import 10 is located the inlet liquor district 20 of the tower plate 2 of the top directly over, and the downcomer 22 export that is located top tower plate 2 is just to the inlet liquor district 20 that is located below tower plate 2, and raw materials export 11 is located the below of the downcomer 22 export of below tower plate 2, and downcomer 22 extends one section distance downwards and has also ensured that the waste liquid of top can flow into in the inlet liquor district 20 of below tower plate 2.

The following specifically explains the working process of this embodiment:

waste water enters the liquid inlet area 20 of the uppermost tower plate 2 from the raw material inlet 10 at the top of the tower body 1, passes through the first overflow plate 230 and then flows to the analysis area 21 of the tower plate 2, an analysis agent entering from the analysis agent inlet 12 at the bottom of the tower body 1 enters the liquid surface layer through the through hole 210 on the tower plate 2 and contacts with the waste liquid to carry out heat transfer and mass transfer reactions, volatile components in the waste liquid are transferred to the analysis agent from the waste water due to different liquid-phase and gas-phase partial pressures, the waste water flows through the analysis area 21 of the tower plate 2 and then enters the downcomer 22 through the second overflow plate 231 to flow down, flows to the liquid inlet area 20 of the next tower plate 2 to begin next analysis, the waste liquid flows out of the stripping tower from the raw material outlet 11 at the bottom of the tower body 1 after passing through a limited number of tower plates 2, and the analysis agent with the volatile components flows out from the analysis agent outlet 13 at the top of the tower body 1.

The first embodiment is as follows:

the molded tower plate 2 of the embodiment is arranged in a stripping tower and used for a removal treatment process of a certain refinery in Fujian, water vapor is used as a resolving agent to remove light components in an oil product, and after 8 hours of stripping, the content of the light components at an oil outlet is measured to be 9.3%.

Example two:

the molded tower plate of the embodiment is arranged in a stripping tower by using an ultra-low carbon steel material and is used for a urea extraction process of a certain chemical plant in Anhui province, and carbon dioxide gas and ammonia gas are used as stripping agents, and the stripping efficiency of the urea in the stripping tower is 82.9 percent after stripping.

Comparative example:

the column plates with the same area, which are manufactured and formed and commonly used on the market under the same aperture ratio as the two plates in the embodiment, are arranged in the stripping tower by using an ultra-low carbon steel material, and are used for the urea extraction process of a certain chemical plant in Anhui, carbon dioxide gas and ammonia gas are used as stripping agents, and the stripping efficiency of the urea in the stripping tower is 67.4 percent after stripping.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a wastewater stripping tower, includes the tower body, sets up the tower plate in the tower body, the tower body raw materials import, raw materials export, analytic agent import and analytic agent export have, raw materials import, analytic agent export be located the tower body top, raw materials export, analytic agent import be located the bottom of tower body, the tower plate on seted up a plurality of through-holes, its characterized in that: convex parts protruding upwards are arranged on the upper surface of the tower plate and among the through holes.

2. The wastewater stripping column according to claim 1, characterized in that: the cross-sectional area of the bottom of the convex part is smaller than that of the top of the convex part.

3. The wastewater stripper as set forth in claim 2, characterized in that: the convex part is gradually reduced from the bottom to the top.

4. The wastewater stripping column according to claim 1, 2 or 3, characterized in that: the convex part is a rectangular pyramid.

5. The wastewater stripping column according to claim 1, characterized in that: the tower plate comprises a liquid inlet area, an analysis area and a downcomer, the liquid inlet area and the analysis area are separated by a first overflow plate, the analysis area and the downcomer are separated by a second overflow plate, and the through hole and the convex part are arranged in the analysis area.

6. The wastewater stripping column according to claim 5, characterized in that: the height of the first overflow plate is lower than that of the second overflow plate.

7. The wastewater stripping column according to claim 5, characterized in that: the downcomer extends a distance downwardly from the face of the tray.

8. The wastewater stripping column according to claim 5, characterized in that: the tower plates are arranged in a plurality, the tower plates are distributed from top to bottom, and the outlet of the downcomer of the tower plate positioned above is over against the liquid inlet area of the tower plate positioned below.

9. The wastewater stripping column according to claim 1, characterized in that: the raw material inlet is positioned right above the liquid inlet area of the tower plate; the raw material outlet is positioned below the outlet of the downcomer of the tower plate.

10. The wastewater stripping column according to claim 1, characterized in that: one convex part is arranged between the four through holes.