CN214635384U

CN214635384U - High-efficient aeration equipment of recoil formula desulfurizing tower

Info

Publication number: CN214635384U
Application number: CN202120204862.1U
Authority: CN
Inventors: 冯文平; 高保行; 张玲香; 穆海涛
Original assignee: Botou Dahua Environmental Protection Engineering Co ltd
Current assignee: Botou Dahua Environmental Protection Engineering Co ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-11-09
Anticipated expiration: 2031-01-26

Abstract

The utility model discloses a high-efficiency aeration device of a backflushing type desulfurizing tower, which comprises an aeration pipe, a floating disc and an annular backflushing flow channel, wherein the aeration pipe is connected with an oxidation fan through an air supply pipe, air outlets are uniformly distributed on the aeration pipe, the floating disc floats on a liquid surface of a slurry pool, and the diameter of the floating disc is not less than two thirds of the inner diameter of the slurry pool; the annular backflushing flow channel is also arranged on the inner side of the slurry pool, the upper side and the lower side of the annular backflushing flow channel are both provided with openings, the lower side of the annular backflushing flow channel is provided with an opening corresponding to the gap between the periphery of the floating disc and the inner wall of the slurry pool, the floating disc prevents floating bubbles from directly reaching the liquid surface of the slurry pool and breaking and escaping, the bubbles are forced to flow in a peripheral extending mode, the flowing stroke of the bubbles is increased, the contact time of gas and slurry is prolonged, in addition, the annular backflushing flow channel discharges the slurry to the gap between the periphery of the floating disc and the inner wall of the slurry pool, and the impacted bubbles are broken and flow disorderly in the slurry, so that the contact reaction of oxidizing air and the slurry is facilitated.

Description

High-efficient aeration equipment of recoil formula desulfurizing tower

Technical Field

The utility model relates to a desulfurizing tower field, concretely relates to high-efficient aeration equipment of recoil formula desulfurizing tower.

Background

As is known, in the operation process of a desulfurization tower, oxidizing air needs to be supplied to slurry in an absorption tower, the oxidizing air is uniformly dispersed into a slurry tank of the absorption tower through an oxidizing air dispersing pipe network, a plurality of small holes are formed in the oxidizing air dispersing pipe network, the oxidizing air is sprayed out from the small holes to form fine air bubbles, the fine air bubbles are uniformly dispersed into the slurry tank of the absorption tower, then the air bubbles rise to the liquid surface of the slurry tank by virtue of buoyancy, and are mixed with the slurry and subjected to oxidation reaction in the rising process, the process also becomes aeration, the existing aeration device only simply comprises an aeration pipe, the bubbles can directly reach the liquid surface to be cracked and escape, the contact reaction time of the oxidizing air and the slurry in the whole process is short, and the full reaction is not facilitated.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the background art, the utility model aims at providing a high-efficient aeration equipment of recoil formula desulfurizing tower, it has effectively solved the problem that exists among the background art.

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

a high-efficiency aeration device of a back-flushing type desulfurization tower comprises an aeration pipe, a floating disc and an annular back-flushing flow channel which are sequentially arranged from bottom to top, wherein the aeration pipe is connected with an oxidation fan through an air supply pipe, air outlet holes are uniformly distributed in the aeration pipe, the floating disc floats on a liquid surface of a slurry tank, the diameter of the floating disc is not less than two thirds of the inner diameter of the slurry tank, a guide slide rod is further arranged on the upper side of the floating disc, a limit ring is arranged on the outer side of the guide slide rod in a matched mode, and the limit ring is fixedly arranged on the inner side of the slurry tank through a cross beam; the annular backflushing flow channel is also arranged on the inner side of the slurry pool, openings are formed in the upper side and the lower side of the annular backflushing flow channel, and the opening in the lower side of the annular backflushing flow channel corresponds to a gap between the periphery of the floating disc and the inner wall of the slurry pool.

Furthermore, the aeration pipe comprises a cross-shaped main pipe and a plurality of annular air outlet pipes arranged on the cross-shaped main pipe, the cross-shaped main pipe is connected with the air supply pipe, and the air outlet holes are formed in the annular air outlet pipes.

Furthermore, a plurality of radial baffles are uniformly distributed on the bottom surface of the floating disc in the circumferential direction and are positioned below the liquid surface of the slurry pool.

Further, the width of the upper opening of the annular backflushing flow channel is larger than that of the lower opening.

The utility model discloses following beneficial technological effect has:

the utility model provides a floating disc can effectively avoid the bubble of come-up directly to arrive thick liquid pond liquid table and break and overflow, but force the bubble to extend all around and flow, bubble flow stroke has been increased, the contact time of bubble and thick liquid has been prolonged, in addition, the annular recoil runner is collected the partial thick liquid that the top drenched down and is discharged the space between floating disc periphery and the thick liquid pond inner wall, the thick liquid that flows down is to reaching bubble etc. at here and forming the recoil, the impact force effect of the thick liquid that the top flows down, the bubble takes place breakage and unordered flow in thick liquid inside, be favorable to the contact reaction of oxidizing air and thick liquid more.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present invention at a main viewing angle;

FIG. 2 is a top view of an aeration tube according to an embodiment of the present invention;

fig. 3 is a bottom view of a floating disk according to an embodiment of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, the high-efficiency aeration device of the back-flushing type desulfurization tower in this embodiment includes an aeration pipe 1, a floating disc 2 and an annular back-flushing flow channel 3, which are sequentially arranged from bottom to top, the aeration pipe 1 is connected with an oxidation fan (not shown) through an air supply pipe 4, air outlets 5 are uniformly distributed on the aeration pipe 1, specifically, the aeration pipe 1 includes a cross main pipe 6 and a plurality of annular air outlet pipes 7 arranged on the cross main pipe 6, the plurality of annular air outlet pipes 7 are coaxially arranged, the cross main pipe 6 is connected with the air supply pipe 4, the air outlets 5 are arranged on the annular air outlet pipes 7, the structural form of the aeration pipe 1 is the prior art in this field, the floating disc 2 floats on a liquid surface of a slurry tank, the diameter of the floating disc 2 is not less than two thirds of the inner diameter of the slurry tank, a guide slide bar 8 is further arranged on the upper side of the floating disc 2, a limit ring 9 is arranged outside the guide slide bar 8 in a matching manner, the limiting ring 9 is fixedly arranged on the inner side of the slurry tank through the cross beam 10, the limiting ring 9 is sleeved on the outer side of the guide slide rod 8, the floating disc 2 is prevented from being greatly displaced in the horizontal direction while moving up and down, the normal working position of the floating disc 2 is ensured, the inner diameter of the preferred limiting ring 9 is 1.1 times of the outer diameter of the guide slide rod 8, the limiting effect is achieved, the friction force between the limiting ring 9 and the guide slide rod 8 can be effectively reduced, and the floating disc 2 can be easily lifted; the annular backflushing flow channel 3 is also arranged on the inner side of the slurry pool, the upper side and the lower side of the annular backflushing flow channel 3 are both provided with openings, the lower side of the annular backflushing flow channel 3 is provided with a gap between the periphery of the floating disc 2 and the inner wall of the slurry pool, which corresponds to the opening on the lower side, the bottom surface of the floating disc 2 is evenly provided with a plurality of radial baffles 11 in the circumferential direction, the radial baffles 11 are positioned below the liquid surface of the slurry pool, the arrangement of the radial baffles 11 can prevent bubbles from being bundled and flowing in a certain direction after reaching the bottom surface of the floating disc 2, so that the bubbles continuously move in a scattering shape on the bottom surface of the floating disc 2, the gap between the periphery of the floating disc 2 and the inner wall of the slurry pool is provided with gas escaping and experiences the backflushing of the annular backflushing flow channel 3, the preferred floating disc 2 and the radial baffles 11 are both made of polypropylene, the chemical property is stable, the acid and alkali resistance performance is excellent, the processing is easy, the thickness of the floating disc 2 is 8-15cm, a closed hollow inner cavity can be arranged in the floating disc 2, the buoyancy of the floating disc 2 is increased, and of course, other materials can be selected for the floating disc 2 and the radial baffle plate 11, and the floating disc 2 only needs to float and the radial baffle plate 11 is positioned below the liquid surface of the slurry pool.

The width of the upper opening of the annular backflushing flow channel 3 is larger than that of the lower opening, so that the annular backflushing flow channel 3 can receive more upper spraying slurry and accurately throw the part of slurry into a gap formed between the periphery of the floating disc 2 and the inner wall of the slurry pool.

The working principle of the embodiment is as follows:

oxidizing air is blown into an aeration pipe 1 through an air supply pipe 4 by an oxidizing fan, the oxidizing air is discharged into slurry through an air outlet 5 and flows upwards, most of the oxidizing air floats to the lower part of a floating disc 2, a small part of the oxidizing air floats to a gap formed between the periphery of the floating disc 2 and the inner wall of a slurry pool, an annular recoil flow channel 3 receives the slurry sprayed from the upper part and then discharges the slurry through a lower opening, the discharged slurry impacts the gap, the small part of the oxidizing air directly reaching the gap is impacted by the slurry, the oxidizing air is further crushed and flows disorderly in the slurry and finally escapes through a liquid surface at the gap, most of the bubbles floating to the lower part of the floating disc 2 are shielded by the floating disc 2 and cannot be directly cracked and escape, the bubbles adhere to the bottom surface of the floating disc 2 and flow around under the carding action of a radial baffle plate 11, and the bubbles which are also subjected to the slurry when flowing to the gap formed between the periphery of the floating disc 2 and the inner wall of the slurry pool Impacting, further crushing and disordered flowing in the slurry, and finally escaping through the liquid surface at the gap; the floating disc 2 effectively avoids that floating bubbles directly reach the liquid surface of the slurry pool and break and escape, but forces the bubbles to extend and flow around, so that the flowing stroke of the bubbles is increased, the contact time of gas and slurry is prolonged, in addition, the annular backflushing flow channel 3 collects and discharges part of slurry sprayed from the upper part into a gap between the periphery of the floating disc 2 and the inner wall of the slurry pool, the flowing slurry forms backflushing on the bubbles reaching the position, and the bubbles are broken and flow disorderly in the slurry under the action of the impact force of the slurry flowing from the upper part, so that the contact reaction of oxidizing air and the slurry is facilitated.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The efficient aeration device of the backflushing type desulfurization tower is characterized by comprising an aeration pipe, a floating disc and an annular backflushing flow channel, wherein the aeration pipe, the floating disc and the annular backflushing flow channel are sequentially arranged from bottom to top; the annular backflushing flow channel is also arranged on the inner side of the slurry pool, openings are formed in the upper side and the lower side of the annular backflushing flow channel, and the opening in the lower side of the annular backflushing flow channel corresponds to a gap between the periphery of the floating disc and the inner wall of the slurry pool.

2. The apparatus as claimed in claim 1, wherein the aeration pipe comprises a cross-shaped main pipe and a plurality of annular outlet pipes disposed on the cross-shaped main pipe, the cross-shaped main pipe is connected to the air supply pipe, and the outlet holes are disposed on the annular outlet pipes.

3. The high-efficiency aeration device of the backflushing desulfurization tower is characterized in that a plurality of radial baffles are uniformly distributed on the bottom surface of the floating disc in the circumferential direction and are positioned below the liquid surface of the slurry pool.

4. The high-efficiency aeration device of the backflushing desulfurization tower according to claim 1, wherein the width of the upper opening of the annular backflushing flow channel is larger than that of the lower opening.