Gas cooling scrubbing tower

Abstract

This utility model relates to a gas cooling and scrubbing tower, belonging to the field of gas purification technology. It includes a tower body, an air inlet, an air outlet, and a liquid outlet, located on the side, top, and bottom of the tower body, respectively. Between the air inlet and outlet within the tower body's internal cavity, a first spray device, a uniform flow water curtain layer, and a second spray device are sequentially arranged from bottom to top. The uniform flow water curtain layer includes a uniform flow water curtain baffle, and a water curtain regulating component is arranged above the baffle. This utility model utilizes the uniform flow water curtain baffle and the second spray device to repeatedly deflect, mix, cool, and scrub dust-laden gas, solving the problems of gas flow deviation, poor cooling and scrubbing effects in existing hollow cooling and scrubbing towers. It has the advantages of high scrubbing efficiency, low resistance, no clogging, simple structure, and easy maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of gas purification technology and relates to a gas cooling and scrubbing tower. Background Technology

[0002] In the field of gas purification technology for steel production, counter-current hollow cooling and scrubbing towers have become one of the key equipment for gas cooling, scrubbing and purification due to their significant advantages such as simple structure, low cost and easy maintenance.

[0003] The counter-flow hollow cooling and scrubbing tower mainly consists of core components such as the tower body, air inlet, exhaust outlet, liquid outlet, and spray device. Its working principle is as follows: high-temperature dust-laden gas enters the tower body through the air inlet and moves upwards within the tower. Simultaneously, the spray device sprays coolant downwards in droplets, creating a counter-current contact between the high-temperature dust-laden gas and the sprayed droplets. During this process, heat exchange occurs first, with the heat from the high-temperature gas transferred to the low-temperature droplets, thus lowering the gas temperature. Simultaneously, dust particles in the gas interact with the droplets; through inertial collisions, interception, and agglomeration, the dust particles are encapsulated by the droplets and gradually increase in size, eventually falling with the droplets into the liquid outlet at the bottom of the tower. This process achieves gas cooling, scrubbing, and purification, providing qualified gas for subsequent steel production processes.

[0004] However, in practical engineering applications, the cooling and dust removal efficiency of counter-flow hollow cooling scrubbers often falls short of the expected ideal results. Uneven airflow distribution is a prominent issue. Due to the difficulty in achieving a perfectly perfect tower structure design and the influence of factors such as the air intake method, uneven airflow distribution frequently occurs within hollow cooling scrubbers, with severe flow deviation. During actual operation, the gas flow rate is too high in some areas and too low in others. This results in insufficient contact time between the gas and liquid droplets in areas with excessive gas flow, leading to inadequate heat exchange and dust particle capture; while in areas with insufficient gas flow, although the contact between the gas and liquid droplets is relatively sufficient, the overall processing capacity is limited. Even more seriously, some gas escapes directly from the exhaust port without sufficient contact with the liquid. This situation not only significantly reduces the cooling and cleaning purification effect of the equipment, failing to effectively lower the gas temperature and remove dust particles, but also, in extreme cases, can lead to excessively high outlet gas temperatures or dust content exceeding the allowable values ​​of downstream facilities. High-temperature gases may cause thermal damage to downstream equipment and pipelines, shortening their service life and even damaging the piping system; while excessive dust content may clog the pipes and valves of downstream equipment, affecting the normal operation of the equipment, increasing equipment maintenance costs and downtime, and thus adversely affecting the stability and efficiency of the entire steel production process.

[0005] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems in order to meet the higher requirements for gas cooling, washing and purification. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a gas cooling and scrubbing tower to solve the problems of gas flow deviation and poor cooling and scrubbing effect in existing hollow cooling and scrubbing towers.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A gas cooling scrubbing tower includes a tower body, an air outlet at the top of the tower body, a liquid outlet at the bottom of the tower body, an air inlet on the side wall of the tower body, and between the air inlet and the air outlet, a first spray device, a uniform flow water curtain layer and a second spray device are arranged sequentially from bottom to top inside the tower body, and the uniform flow water curtain layer has at least two layers.

[0009] Each layer of the uniform flow water curtain includes several uniform flow water curtain partitions, which are fixedly connected to the inner wall of the tower body; the uniform flow water curtain partitions of adjacent layers are staggered in the horizontal direction.

[0010] Each of the equalizing water curtain partitions includes an inverted V-shaped baffle and a single-sided inclined plate disposed on both sides of the inverted V-shaped baffle; the water curtain adjustment assembly is supported on the upper surface of the inverted V-shaped baffle or the single-sided inclined plate, and uses the liquid sprayed by the water curtain adjustment assembly to self-clean the equalizing water curtain partition.

[0011] Optionally, the uniform flow water curtain layer of the nth layer is composed of a plurality of inverted V-shaped baffles arranged in sequence; the uniform flow water curtain layer of the (n+1)th layer includes a plurality of inverted V-shaped baffles arranged in sequence, and a single-sided inclined plate arranged on both sides of the plurality of inverted V-shaped baffles; the uniform flow water curtain partition of the nth layer and the uniform flow water curtain partition of the (n+1)th layer are arranged alternately to leave a channel for gas flow; n is a natural number.

[0012] Optionally, the first spraying device includes a first liquid supply pipeline and a first spray nozzle disposed on the first liquid supply pipeline; the second spraying device includes a second liquid supply pipeline and a second spray nozzle disposed on the second liquid supply pipeline.

[0013] Optionally, the water curtain adjustment assembly includes a third spray nozzle disposed on the top of the equalizing water curtain partition, and the third spray nozzles on the same layer of the equalizing water curtain partition are connected through a third liquid supply pipeline, which is supported above the equalizing water curtain partition.

[0014] Optionally, the third spray nozzle is directed toward the uniform flow water curtain partition.

[0015] Optionally, the third liquid supply lines of adjacent layers are interconnected.

[0016] Optionally, an automatic valve is provided on the third liquid supply line to regulate the flow rate of the third liquid supply line;

[0017] The third liquid supply lines of adjacent layers are interconnected and form a main pipe;

[0018] The automatic valve is located on each of the third liquid supply lines, or on the main pipe.

[0019] Optionally, the water curtain regulating assembly further includes a detection device installed on the tower body for monitoring the temperature or pressure difference of the gas after cooling and washing inside the tower body. The detection device is electrically connected to the automatic valve, so as to adjust the automatic valve according to the data monitored by the detection device.

[0020] Optionally, the detection device is disposed between the second spray device and the air outlet.

[0021] Optionally, the two ends of the uniform flow water curtain partition along its extension direction are fixedly connected to the inner wall of the tower body.

[0022] The beneficial effects of this utility model are as follows:

[0023] This utility model provides a gas cooling and scrubbing tower that utilizes a uniform flow water curtain baffle and a second spray device to repeatedly deflect, mix, cool, and scrub dust-laden gas, solving the problems of easy gas flow deviation and poor cooling and scrubbing effects in existing hollow cooling and scrubbing towers. This utility model has good gas flow uniformity, high cooling and scrubbing efficiency, low pressure loss, good anti-clogging performance, simple structure, and is easy to maintain.

[0024] The uniform flow water curtain partition of this utility model has at least two layers, and the uniform flow water curtain partitions of adjacent layers are staggered in the horizontal direction. While ensuring the upward flow direction of the gas, the distance of gas flow is increased, which enables the gas to undergo multiple deflections, mixing, cooling and washing purification during the flow process. The gas has good uniform flow performance and high cooling and washing purification efficiency.

[0025] The uniform flow water curtain partition includes an inverted V-shaped baffle and a single-sided inclined plate. The third spray nozzle of the water curtain adjustment component is located on the top of the inverted V-shaped baffle or the single-sided inclined plate and faces the inverted V-shaped baffle or the single-sided inclined plate. When the liquid is sprayed from the third spray nozzle, it can directly achieve the self-cleaning function of the inverted V-shaped baffle and the single-sided inclined plate. The shape of the inverted V-shaped baffle also facilitates the sliding of dust and liquid, which plays a role in preventing deposition and solves the problem of dust deposition on the leeward side of the uniform flow water curtain partition.

[0026] This utility model also includes an automatic valve installed on the third liquid supply pipeline, and a detection device electrically connected to the automatic valve. The detection device detects the temperature or pressure difference of the gas after cooling and washing inside the tower, and then controls the automatic valve to adjust the flow rate in the third liquid supply pipeline.

[0027] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0031] Figure 3 for Figure 1 Axonometric drawing of section A in the image.

[0032] Figure label:

[0033] 10 tower body, 20 air inlet, 30 air outlet, 40 liquid outlet.

[0034] 50 First spray device, 51 First liquid supply pipeline, 52 First spray nozzle,

[0035] 60. Uniform water curtain layer; 61. Uniform water curtain partition; 611. Inverted V-shaped baffle; 612. Single-sided inclined plate; 62. Water curtain adjustment assembly; 621. Third liquid supply pipeline; 622. Third spray nozzle; 623. Automatic valve; 624. Detection device.

[0036] 70 Second spray device, 71 Second liquid supply pipeline, 72 Second spray nozzle. Detailed Implementation

[0037] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0038] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0039] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0040] Example 1

[0041] Please see Figures 1-3 A gas cooling and scrubbing tower includes a tower body 10, an air outlet 30 at the top of the tower body 10, a liquid outlet 40 at the bottom of the tower body 10, and an air inlet 20 on the side wall of the tower body 10. Between the air inlet 20 and the air outlet 30, the interior of the tower body 10 is provided with a first spray device 50, a uniform flow water curtain layer 60, and a second spray device 70 from bottom to top.

[0042] The uniform flow water curtain layer 60 has at least two layers. Each uniform flow water curtain layer 60 includes several uniform flow water curtain partitions 61, which are fixedly connected to the inner wall of the tower body 10. The uniform flow water curtain partitions 61 of adjacent layers are staggered in the horizontal direction. While ensuring the upward flow direction of the gas, the distance of the gas flow is increased, which allows the gas to undergo multiple deflections, mixing, cooling and washing purification during the flow process. This results in better gas flow uniformity and higher cooling and washing purification efficiency.

[0043] Each uniform flow water curtain partition 61 includes an inverted V-shaped baffle 611 and a single-sided inclined plate 612 disposed on both sides of the inverted V-shaped baffle 611; the water curtain adjustment component 62 is supported on the upper surface of the inverted V-shaped baffle 611 or the single-sided inclined plate 612, and the liquid sprayed by the water curtain adjustment component 62 is used to self-clean the uniform flow water curtain partition 61, thus solving the problem of dust deposition on the leeward side of the uniform flow water curtain partition 61.

[0044] Example 2

[0045] Based on the above embodiment 1, this embodiment defines the first spray device 50 as including a first liquid supply pipe 51 and a first spray nozzle 52, wherein the first spray nozzle 52 is provided at least once and is laid in at least one layer. The second spray device 70 includes a second liquid supply pipe 71 and a second spray nozzle 72, wherein the second spray nozzle 72 is provided at least once and is laid in at least one layer.

[0046] In some embodiments of this utility model, the first spray device 50 has at least two first liquid supply pipes 51 and first spray nozzles 52, which are symmetrically arranged on the inner wall of the tower body 10; the second spray device 70 has at least two second liquid supply pipes 71 and second spray nozzles 72, which are symmetrically arranged on the inner wall of the tower body 10.

[0047] Example 3

[0048] Based on the above embodiment one or embodiment two, the nth layer of the uniform flow water curtain layer 60 is composed of a number of inverted V-shaped baffles 611 arranged in sequence; the (n+1)th layer of the uniform flow water curtain layer 60 includes a number of inverted V-shaped baffles 611 arranged in sequence, and a single-sided inclined plate 612 arranged on both sides of the number of inverted V-shaped baffles 611; the nth layer of the uniform flow water curtain partition 61 and the (n+1)th layer of the uniform flow water curtain partition 61 are arranged alternately to leave a channel for gas flow; n is a natural number.

[0049] In this embodiment, the water curtain regulating assembly 62 includes a third spray nozzle 622 disposed on top of the inverted V-shaped baffle 611. The third spray nozzle 622 on the same layer of the equalizing water curtain partition 61 is connected through a third liquid supply pipe 621, which is supported above the equalizing water curtain partition 61. The two ends of the inverted V-shaped baffle 611 and the single-sided inclined plate 612 along their extension direction are fixedly connected to the inner wall of the tower body 10. The third spray nozzle 622 faces the inverted V-shaped baffle 611 or the single-sided inclined plate 612, and the liquid sprayed from the third spray nozzle 622 can self-clean the inverted V-shaped baffle 611 and the single-sided inclined plates 612 on both sides.

[0050] Example 4

[0051] Based on the above embodiment three, this embodiment defines that the third liquid supply pipelines 621 of adjacent layers are interconnected and connected to form a main pipe; an automatic valve 623 is provided on each individual third liquid supply pipeline 621 or on the main pipe to regulate the flow rate of the third liquid supply pipeline 621.

[0052] In some other embodiments of this utility model, several third liquid supply lines 621 are independent and not connected to each other, and each individual third liquid supply line 621 is provided with an automatic valve 623 that controls its flow rate.

[0053] The water curtain regulating component 62 also includes a detection device 624 mounted on the tower body 10, used to monitor the temperature or pressure difference of the gas after cooling and washing inside the tower body 10. The detection device 624 is electrically connected to the automatic valve 623, facilitating the adjustment of the automatic valve 623 based on the data monitored by the detection device 624. The detection device 624 is located between the second spray device 70 and the air outlet 30. By detecting the temperature of the outlet gas, it determines whether the gas has been sufficiently cooled, and thus determines whether it is necessary to adjust the spray water volume or the water volume of the water curtain regulating component; by detecting the pressure difference of the gas, it understands the resistance loss of the gas after washing, and thus determines whether it is necessary to adjust the thickness of the water curtain, so as to adjust the water volume of the water curtain regulating component accordingly.

[0054] The detection device 624 is a temperature detection device and / or a differential pressure detection device.

[0055] The working principle of this utility model is as follows:

[0056] Dust-laden gas enters the tower body 10 through the inlet 20 and flows upward, where it undergoes countercurrent heat exchange and washing with the liquid droplets sprayed from the first spray nozzle 52. It then continues upward into the uniform flow water curtain layer 60. In the uniform flow water curtain layer 60, the gas's flow direction changes from upward to horizontal after being blocked by the uniform flow water curtain baffle 61. Passing through the water curtain formed by the uniform flow water curtain baffle 61 and the second spray device 70, the dust in the gas is captured and purified by the water curtain. The gas also exchanges heat with the water curtain as it passes through, thus cooling down. After being uniformly flowed, cooled, and washed by the multiple layers of uniform flow water curtain baffle 61, the gas is discharged from the outlet 30 at the top of the tower body, while the washed liquid is discharged from the liquid outlet 40 of the tower body 10.

[0057] Furthermore, a water curtain regulating component 62 is arranged above the water curtain partition 61. The real-time detection data from the detection device 624 within the water curtain regulating component 62 controls the automatic valve 623, thereby dynamically adjusting the flow rate of the third spray nozzle 622. This achieves intelligent linkage of the water curtain regulating component and dynamically adjusts the thickness of the water curtain layer to meet different cooling, washing, and purification efficiency requirements. Furthermore, the liquid sprayed from the water curtain regulating component 62 can self-clean the uniform flow water curtain partition 61, solving the problem of dust accumulation on the leeward side of the water curtain partition 61. In this invention, the uniform flow water curtain partitions 61 in the same layer and adjacent layers are spaced apart, preventing clogging, resulting in low airflow pressure loss, a simple structure, and easy maintenance.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gas refrigeration scrubbing column characterized by: The tower body (10) includes an air outlet (30) at the top and a liquid outlet (40) at the bottom. An air inlet (20) is provided on the side wall of the tower body (10). Between the air inlet (20) and the air outlet (30), a first spray device (50), a uniform flow water curtain layer (60), and a second spray device (70) are arranged sequentially from bottom to top inside the tower body (10). The uniform flow water curtain layer (60) has at least two layers. Each layer of the uniform flow water curtain layer (60) includes several uniform flow water curtain partitions (61), and the several uniform flow water curtain partitions (61) are fixedly connected to the inner wall of the tower body (10); the uniform flow water curtain partitions (61) of adjacent layers are staggered in the horizontal direction. Each of the equalizing water curtain partitions (61) includes an inverted V-shaped baffle (611) and a single-sided inclined plate (612) disposed on both sides of the inverted V-shaped baffle (611); the water curtain adjustment assembly (62) is supported on the upper surface of the inverted V-shaped baffle (611) or the single-sided inclined plate (612), and the liquid sprayed by the water curtain adjustment assembly (62) is used to self-clean the equalizing water curtain partition (61).

2. The gas refrigeration scrubbing column of claim 1, wherein: The uniform flow water curtain layer (60) of the nth layer is composed of a number of inverted V-shaped baffles (611) arranged in sequence; the uniform flow water curtain layer (60) of the (n+1)th layer includes a number of inverted V-shaped baffles (611) arranged in sequence, and a single-sided inclined plate (612) arranged on both sides of the number of inverted V-shaped baffles (611); the uniform flow water curtain partition (61) of the nth layer and the uniform flow water curtain partition (61) of the (n+1)th layer are arranged alternately to leave a channel for gas flow; n is a natural number.

3. The gas cooling and scrubbing tower according to claim 1, characterized in that: The first spray device (50) includes a first liquid supply line (51) and a first spray port (52) disposed on the first liquid supply line (51); the second spray device (70) includes a second liquid supply line (71) and a second spray port (72) disposed on the second liquid supply line (71).

4. The gas cooling and scrubbing tower according to claim 3, characterized in that: The water curtain adjustment assembly (62) includes a third spray port (622) disposed on the top of the equal flow water curtain partition (61). The third spray port (622) on the same layer of the equal flow water curtain partition (61) is connected through a third liquid supply pipe (621), which is supported above the equal flow water curtain partition (61).

5. The gas cooling and scrubbing tower according to claim 4, characterized in that: The third spray nozzle (622) faces the uniform flow curtain partition (61).

6. The gas cooling and scrubbing tower according to claim 4, characterized in that: The third liquid supply line (621) of the adjacent layers is interconnected.

7. The gas cooling and scrubbing tower according to claim 6, characterized in that: An automatic valve (623) is provided on the third liquid supply line (621) for regulating the flow rate of the third liquid supply line (621); The third liquid supply lines (621) of adjacent layers are interconnected and form a main pipe; The automatic valve (623) is provided on each of the third liquid supply lines (621) or on the main pipe.

8. The gas cooling and scrubbing tower according to claim 7, characterized in that: The water curtain regulating assembly (62) also includes a detection device (624) installed on the tower body (10) for monitoring the temperature or pressure difference of the gas after cooling and washing inside the tower body (10). The detection device (624) is electrically connected to the automatic valve (623) to facilitate the adjustment of the automatic valve (623) based on the data monitored by the detection device (624).

9. The gas cooling and scrubbing tower according to claim 8, characterized in that: The detection device (624) is located between the second spray device (70) and the air outlet (30).

10. The gas cooling and scrubbing tower according to claim 1, characterized in that: The equal flow water curtain partition (61) is fixedly connected to the inner wall of the tower body (10) at both ends along its extension direction.

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