Washing tower for yellow phosphorus tail gas treatment

Abstract

The utility model discloses a washing tower for yellow phosphorus tail gas treatment, which belongs to the technical field of washing towers and comprises a washing tower body for tail gas treatment during yellow phosphorus preparation, an inverted L-shaped partition frame plate is fixed on the upper portion of an inner cavity of the washing tower body, and an upper filter screen and a lower filter screen which are symmetrically distributed up and down are arranged on the top face of an arc-shaped top plate. Horizontal moving mechanisms are further arranged on the two sides of the upper filter screen and the lower filter screen and located on the top face of the arc-shaped top plate, and the horizontal moving mechanisms drive the upper filter screen or the lower filter screen to horizontally move to the position above the dust cleaning cavity and then strike dust particles to fall into the dust cleaning cavity through a dust cleaning assembly in the dust cleaning cavity. The upper filter screen and the lower filter screen are driven by the electric sliding rail to horizontally move to the position above the dust cleaning cavity, automatic filter screen cleaning is achieved through the beating cleaning motor and the dust cleaning beating plate, the requirement for manual maintenance is reduced, and operation safety and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of washing tower, especially a washing tower for yellow phosphorus tail gas treatment. BACKGROUND

[0002] Yellow phosphorus is a commonly used chemical, which can be used to manufacture products such as matches and smoke bombs. The tail gas generated during the production of yellow phosphorus contains a large amount of harmful substances, such as carbon monoxide, hydrogen, hydrogen sulfide, phosphine and dust, etc. If these pollutants are directly discharged into the atmosphere, it will cause serious harm to the environment and human health. Therefore, the purification treatment of yellow phosphorus tail gas is an important problem that yellow phosphorus production enterprises must face.

[0003] The conventional yellow phosphorus tail gas treatment equipment usually uses a washing tower for gas purification. In the existing treatment method, the tail gas is directly ignited in the washing tower, and the combustible tail gas such as carbon monoxide and hydrogen is burned into non-toxic carbon dioxide and water vapor, reducing the pollution to the environment. Although these gases can be treated, the solid dust particles in these tail gases have not been treated and still need to be filtered and captured by a filter screen. The existing filter screen needs to be disassembled and cleaned of dust after long-term filtration of dust particles to prevent the filter screen from being clogged. This process not only consumes time and effort, but also may expose the operator to a harmful environment, increasing the risk of occupational health. At the same time, during the manual cleaning process, improper operation or use of tools may damage the filter screen, shorten its service life and increase the replacement cost. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a washing tower for yellow phosphorus tail gas treatment to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a washing tower for yellow phosphorus tail gas treatment, comprising a washing tower body for tail gas treatment during the preparation of yellow phosphorus and a detachable tower cover arranged at the top end of the washing tower body. The inner cavity upper portion of the washing tower body is fixed with an inverted L-shaped partition shelf plate. One end of the L-shaped partition shelf plate is integrally formed with an arc-shaped top plate in a horizontal state. The outer wall of the arc-shaped top plate is in conformity with and fixed to the inner wall of the washing tower body. The other end of the L-shaped partition shelf plate extends downward and is integrally connected with an arc-shaped extension plate. The outer wall of the arc-shaped extension plate is in conformity with and fixed to the inner wall of the washing tower body.

[0006] The arc-shaped extension plate and the inner wall of the scrubbing tower body form a dust cleaning cavity, the top surface of the arc-shaped top plate is provided with a smoke outlet, the top of the smoke outlet and the top surface of the arc-shaped top plate are provided with upper and lower filter screens which are symmetrically distributed, the two sides of the upper and lower filter screens and the top surface of the arc-shaped top plate are further provided with horizontal moving mechanisms, the horizontal moving mechanisms respectively drive the upper filter screen or the lower filter screen to move horizontally above the dust cleaning cavity, and then the dust particles are knocked off by the dust cleaning assembly in the dust cleaning cavity and fall into the dust cleaning cavity.

[0007] Preferably, the horizontal moving mechanisms comprise two F positioning plates which are symmetrically fixed to the top surface of the arc-shaped top plate, and the two F positioning plates are oppositely arranged on the two sides of the smoke outlet.

[0008] Preferably, the two F positioning plates are separated by an interval intermediate plate, and the upper and lower sides of each interval intermediate plate and the inner wall of the F positioning plate are provided with an electric sliding rail.

[0009] Preferably, the sliding block of each electric sliding rail is connected with the outer wall of the upper filter screen or the lower filter screen, so that the electric sliding rail drives the sliding block to move horizontally.

[0010] Preferably, one end of each F positioning plate which is suspended above the dust cleaning cavity is welded with a support bottom plate.

[0011] One end of the support bottom plate is welded with the outer wall of the L separation shelf plate, so that the support bottom plate provides positioning support for the lower filter screen when the lower filter screen slides in the F positioning plate.

[0012] Preferably, the inner wall of the arc-shaped extension plate is provided with a gathering groove at the middle position, the bottom end of the gathering groove is provided with a dust discharge sliding port, the free end of the dust discharge sliding port is connected with a dust discharge pipe, and the dust discharge pipe penetrates to the outside of the scrubbing tower body.

[0013] Preferably, the top surface of the side of the arc-shaped top plate which is away from the L separation shelf plate is welded with an arc-shaped ear plate, the outer wall of the arc-shaped ear plate is consistent with the inner wall of the scrubbing tower body and is connected with the scrubbing tower body through bolts.

[0014] Preferably, the outer frame of the upper filter screen and the outer frame of the lower filter screen have a gap part, and the height of the gap part is equal to the height of the interval intermediate plate.

[0015] The filter screen ends of the opposite sides of the upper filter screen and the lower filter screen are provided as convex end parts, the height of the two convex end parts which are spliced together is equal to the height of the gap part or the interval intermediate plate.

[0016] Preferably, the dust cleaning assembly comprises a knocking cleaning motor mounted on the outer wall of the scrubbing tower body, a fixing ring fixedly sleeved on the output shaft of the knocking cleaning motor, a swing rod welded on the top of the fixing ring, and a dust cleaning knocking plate fixed on the free end of the swing rod.

[0017] Preferably, the dust cleaning knocking plate is in an arc shape and is made of rubber.

[0018] Compared with the prior art, the technical effects and advantages of the present application are as follows:

[0019] The conventional yellow phosphorus tail gas treatment equipment usually needs to be manually disassembled and cleaned regularly, which not only consumes time and effort, but also may expose the operator to a harmful environment. The technical solution moves the upper and lower filter screens horizontally above the dust cleaning cavity by means of the electric sliding rail, and realizes automatic filter screen cleaning by means of the knocking cleaning motor, the fixing ring, the swing rod and the dust cleaning knocking plate. This design significantly reduces the need for manual maintenance, improves the safety and efficiency of operation.

[0020] The filter screen in the conventional equipment is prone to clogging due to dust accumulation, resulting in a decrease in filtration efficiency, and even frequent shutdown for cleaning. The upper and lower filter screens of the present application can be moved periodically into the dust cleaning cavity for cleaning by means of the horizontal moving mechanism, avoiding the risk of filter screen clogging. This design ensures that the filter screen is always in the best working condition, thereby improving the efficiency and quality of gas purification.

[0021] During the conventional manual cleaning process, the filter screen may be damaged due to improper operation or use of tools, affecting its service life. The dust cleaning knocking plate of the present application is made of rubber, which can effectively remove dust from the filter screen without damaging it. Its arc design makes it easier to adapt to the shape of the filter screen, ensuring maximum contact area during cleaning and preventing the filter screen from being stuck or damaged. This not only prolongs the service life of the filter screen, but also reduces the replacement cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0023] Figure 1 The structure of the present application is shown in the figure;

[0024] Figure 2 It is the dismounting structure schematic view of the detachable tower cover of the utility model;

[0025] Figure 3 It is the connecting structure schematic view of the L partition frame plate of the utility model;

[0026] Figure 4 It is the installation structure schematic view of the upper filter screen and the lower filter screen of the utility model;

[0027] Figure 5 It is the state structure schematic view of the lower filter screen moving out of the utility model;

[0028] Figure 6 It is the connecting structure schematic view of the dust cleaning knock plate of the utility model.

[0029] Explanation of reference signs:

[0030] In the drawing: 1, washing tower body; 2, detachable tower cover; 3, air inlet pipe; 4, exhaust pipe; 5, knock cleaning motor; 6, dust exhaust pipe; 7, L partition frame plate; 8, arc-shaped lug plate; 9, dust cleaning cavity; 10, arc-shaped extension plate; 11, gathering groove; 12, F positioning plate; 13, dust exhaust sliding opening; 14, upper filter screen; 15, lower filter screen; 16, gap part; 17, spacing intermediate plate; 18, electric sliding rail; 19, supporting bottom plate; 20, protruding end part; 21, fixed ring; 22, swing rod; 23, dust cleaning knock plate; 24, arc-shaped top plate. DETAILED DESCRIPTION

[0031] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail to avoid obscuring the present application.

[0032] Unless the context clearly requires otherwise, throughout the description, the terms "comprise", "comprising", "include", "including", and the like are to be construed in an inclusive sense, as opposed to an exclusive or exhaustive sense; that is to say, in the sense of "including, but not limited to".

[0033] The present embodiment provides a method for manufacturing a tower cover as follows Figures 1 to 6The washing tower for yellow phosphorus tail gas treatment shown comprises a washing tower body 1 for tail gas treatment during yellow phosphorus preparation, and a detachable tower cover 2 arranged at the top end of the washing tower body 1, an inverted L-shaped partition shelf plate 7 is fixed to the upper cavity of the washing tower body 1, one end of the L-shaped partition shelf plate 7 is integrally formed with an arc-shaped top plate 24 in a horizontal state, the outer wall of the arc-shaped top plate 24 is in conformity with and fixed to the inner wall of the washing tower body 1, the other end of the L-shaped partition shelf plate 7 is integrally connected with an arc-shaped extension plate 10 extending downward, the outer wall of the arc-shaped extension plate 10 is in conformity with and fixed to the inner wall of the washing tower body 1, a dust cleaning cavity 9 is formed between the arc-shaped extension plate 10 and the inner wall of the washing tower body 1, the top surface of the arc-shaped top plate 24 is provided with a smoke outlet, the top of the smoke outlet and the top surface of the arc-shaped top plate 24 are provided with an upper filter screen 14 and a lower filter screen 15 symmetrically distributed upward and downward, and horizontal moving mechanisms are further arranged on both sides of the upper filter screen 14 and the lower filter screen 15 and the top surface of the arc-shaped top plate 24, the horizontal moving mechanisms respectively drive the upper filter screen 14 or the lower filter screen 15 to move horizontally to above the dust cleaning cavity 9, and then the dust particles are knocked off to the dust cleaning cavity 9 by a dust cleaning assembly in the dust cleaning cavity 9. Through the design of the upper filter screen 14 and the lower filter screen 15, the dust particles in the gas to be discharged can be further filtered, the horizontal moving mechanisms can be driven to move to the dust cleaning cavity 9 for dust cleaning respectively, the traditional mode of disassembling the upper filter screen 14 and the lower filter screen 15 for cleaning is replaced, manpower is saved, the risk of blockage of the upper filter screen 14 and the lower filter screen 15 is reduced after the dust is knocked and cleaned, and the filtering efficiency is improved.

[0034] In the embodiment, the horizontal moving mechanism comprises two F positioning plates 12 symmetrically fixed to the top surface of the arc-shaped top plate 24, and the two F positioning plates 12 are oppositely arranged on both sides of the smoke outlet.

[0035] In the embodiment, the two F positioning plates 12 are separated by a spacing intermediate plate 17, and the upper and lower sides of each spacing intermediate plate 17 and the inner wall of the F positioning plate 12 are provided with an electric sliding rail 18.

[0036] In the embodiment, the sliding block of each electric sliding rail 18 is connected with the outer wall of the upper filter screen 14 or the lower filter screen 15, so that the electric sliding rail 18 drives the sliding block to move the upper filter screen 14 or the lower filter screen 15 horizontally.

[0037] In the embodiment, one end of each F positioning plate 12 suspended above the dust cleaning cavity 9 is welded with a support bottom plate 19, and one end of the support bottom plate 19 is welded with the outer wall of the L-shaped partition shelf plate 7, so that the support bottom plate 19 provides positioning support for the lower filter screen 15 when the lower filter screen 15 slides in the F positioning plate 12.

[0038] In this embodiment, the inner wall of the arc-shaped extension plate 10 is provided with a gathering groove 11 in the middle position, the bottom end of the gathering groove 11 is provided with a dust discharge sliding opening 13, the free end of the dust discharge sliding opening 13 is connected with a dust discharge pipe 6, and the dust discharge pipe 6 penetrates to the outside of the scrubbing tower body 1. The design of the gathering groove 11 helps to gather the falling dust particles towards the center and slide down, preventing dust particles from accumulating.

[0039] In this embodiment, the arc-shaped top plate 24 is welded with an arc-shaped ear plate 8 on the side top surface away from the L-shaped partition plate 7, the outer wall of the arc-shaped ear plate 8 is consistent with the inner wall of the scrubbing tower body 1 and is connected with the scrubbing tower body 1 through bolts.

[0040] In this embodiment, the outer frame of the upper filter screen 14 and the outer frame of the lower filter screen 15 have a gap part 16, the height of the gap part 16 is equal to the height dimension of the spacing middle plate 17; the filter screen end of the opposite side of the upper filter screen 14 and the lower filter screen 15 is provided as a protruding end part 20, and the height dimension of the two protruding end parts 20 spliced together is equal to the height dimension of the gap part 16 or the spacing middle plate 17. The two protruding end parts 20 superimposed together just fill the gap part 16, which helps to filter and prevents dust particles in the gas from leaking out of the gap part 16.

[0041] In this embodiment, the dust cleaning assembly includes a knocking cleaning motor 5 installed on the outer wall of the scrubbing tower body 1, a fixing ring 21 fixedly sleeved on the output shaft of the knocking cleaning motor 5, a swing rod 22 welded on the top of the fixing ring 21, and a dust cleaning knocking plate 23 fixed on the free end of the swing rod 22. The knocking cleaning motor 5 is located above the dust discharge pipe 6, and the output shaft of the knocking cleaning motor 5 extends into the dust cleaning cavity 9, and the fixing ring 21, the swing rod 22 and the dust cleaning knocking plate 23 are all located in the dust cleaning cavity 9.

[0042] In this embodiment, the dust cleaning knocking plate 23 is in an arc shape structure, and the dust cleaning knocking plate 23 is made of rubber material. The arc-shaped design helps to knock on the filter screen when the swing rod 22 swings, and the arc-shaped curved surface design facilitates swinging and rotating, preventing the filter screen from being stuck, and the rubber material design helps to protect the filter screen and prevent it from being damaged by knocking. The lower outer wall of the scrubbing tower body 1 penetrates the air inlet pipe 3, the top surface of the detachable tower cover 2 penetrates the exhaust pipe 4, and the exhaust pipe 4 is located directly above the upper filter screen 14 and the lower filter screen 15 and the smoke discharge port

[0043] In this embodiment, a power distribution control box is installed on the outer wall of the scrubbing tower body 1, which is not shown in the figure. Inside the power distribution control box, there is a PLC for controlling the operation of the beating cleaning motor 5 and the opening and closing of the electric sliding rail 18. The electric sliding rail 18 is designed with a motor-driven screw principle. Since this electric sliding rail 18 is a prior art, it will not be further described in this technical solution. The model of the electric sliding rail 18, the PLC, and the beating cleaning motor 5 should be reasonably selected according to the actual application situation and the load parameters.

[0044] Working principle:

[0045] The yellow phosphorus tail gas treatment scrubbing tower, the treated yellow phosphorus tail gas enters the scrubbing tower body 1 through the gas inlet pipe 3. At this time, the tail gas may contain a large amount of dust particles and other harmful substances. After the tail gas enters the scrubbing tower, the combustible tail gas such as carbon monoxide and hydrogen is burned into non-toxic carbon dioxide and water vapor by igniting the tail gas in the scrubbing tower, reducing environmental pollution. Then, it passes through the inverted structure composed of the L partition plate 7 and the arc-shaped top plate 24. This structure not only supports the upper filtering structure, but also allows the tail gas to continue to rise and pass through the upper and lower symmetrically distributed upper filter net 14 and lower filter net 15 in turn when passing through the smoke outlet. The two layers of filter nets work together to further remove fine particles in the tail gas, ensuring that the discharged gas meets environmental protection standards. The gap part 16 between the upper filter net 14 and the lower filter net 15 has two protruding end parts 20 stacked together to fill the gap part 16, which helps filtration and prevents dust particles in the gas from leaking out of the gap part 16.

[0046] In order to prevent the filter net from being blocked, the system is equipped with an automatic cleaning mechanism. When the filter net needs to be cleaned, the electric sliding rail 18 drives the upper filter net 14 or the lower filter net 15 to move horizontally above the dust cleaning cavity 9. The F positioning plate 12 provides a mounting position for the electric sliding rail 18 and ensures that the filter net remains stable during movement.

[0047] When the filter net moves above the dust cleaning cavity 9, the beating cleaning motor 5 starts to drive the dust cleaning beating plate 23 to swing through the fixed ring 21 and the swing rod 22. The dust cleaning beating plate 23 is made of rubber material, which can effectively beat and remove the dust attached to the filter net without damaging the filter net. Its arc-shaped design makes it easier to adapt to the shape of the filter net, ensuring maximum contact area during cleaning.

[0048] The beaten dust particles fall into the dust cleaning cavity 9 below and are concentrated into the gathering groove 11 under the guidance of the arc-shaped extension plate 10. The design of the gathering groove 11 helps the dust particles to slide towards the center and prevents dust accumulation. Subsequently, the dust enters the dust exhaust pipe 6 through the dust exhaust sliding outlet 13 and is finally discharged outside the scrubbing tower, keeping the interior clean.

[0049] The clean gas after purification and cleaning is discharged from the scrubbing tower through the exhaust pipe 4. The exhaust pipe 4 is located on the top surface of the detachable tower cover 2, just above the upper filter screen 14, the lower filter screen 15 and the smoke outlet, ensuring that the purified gas is smoothly discharged.

[0050] It is to be noted that the relational terms herein such as one and two and the like merely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, inclusion of an element by use of the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0051] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A scrubbing tower for treating yellow phosphorus tail gas, comprising a scrubbing tower body (1) for treating tail gas during the preparation of yellow phosphorus and a detachable tower cover (2) disposed at the top of the scrubbing tower body (1), characterized in that: An inverted L-shaped partition plate (7) is fixed to the upper part of the inner cavity of the washing tower body (1). One end of the L-shaped partition plate (7) is integrally formed with an arc-shaped top plate (24) in a horizontal state. The outer wall of the arc-shaped top plate (24) matches and is fixed to the inner wall of the washing tower body (1). The other end of the L-shaped partition plate (7) extends downward and is integrally connected to an arc-shaped extension plate (10). The outer wall of the arc-shaped extension plate (10) matches and is fixed to the inner wall of the washing tower body (1). The arc-shaped extension plate (10) and the inner wall of the washing tower body (1) enclose a dust cleaning chamber (9). The top surface of the arc-shaped top plate (24) has a smoke exhaust port. The top of the smoke exhaust port and the top surface of the arc-shaped top plate (24) are provided with an upper filter screen (14) and a lower filter screen (15) symmetrically distributed. The upper filter screen (14) and the lower filter screen (15) are also provided with a horizontal moving mechanism on both sides of the upper filter screen (14) and the lower filter screen (15) and the top surface of the arc-shaped top plate (24). The horizontal moving mechanism drives the upper filter screen (14) or the lower filter screen (15) to move horizontally to the top of the dust cleaning chamber (9) and then the dust particles are knocked down into the dust cleaning chamber (9) by the dust cleaning component in the dust cleaning chamber (9).

2. A scrubbing tower for treating yellow phosphorus tail gas according to claim 1, characterized in that: The horizontal moving mechanism includes two F positioning plates (12) symmetrically fixed to the top surface of the arc-shaped top plate (24), and the two F positioning plates (12) are arranged opposite each other on both sides of the smoke exhaust port.

3. A scrubbing tower for treating yellow phosphorus tail gas according to claim 2, characterized in that: The intermediate plate (17) between the two F positioning plates (12) separates the upper filter screen (14) and the lower filter screen (15) vertically. Each intermediate plate (17) is provided with an electric slide rail (18) on both the upper and lower sides and on the inner wall of the F positioning plate (12).

4. A scrubbing tower for treating yellow phosphorus tail gas according to claim 3, characterized in that: Each of the sliders of the electric slide rails (18) is connected to the outer wall of the upper filter screen (14) or the lower filter screen (15), so that when the electric slide rails (18) drive the sliders, they drive the upper filter screen (14) or the lower filter screen (15) to move horizontally.

5. A scrubbing tower for treating yellow phosphorus tail gas according to claim 4, characterized in that: Each F positioning plate (12) suspended above the dust cleaning chamber (9) has a supporting base plate (19) welded to one end of its bottom surface. One end of the support base plate (19) is welded to the outer wall of the L partition plate (7), so that when the lower filter screen (15) slides in the F positioning plate (12), the support base plate (19) provides positioning support for the lower filter screen (15).

6. A scrubbing tower for treating yellow phosphorus tail gas according to claim 5, characterized in that: The inner wall of the arc-shaped extension plate (10) is provided with a gathering groove (11) in the middle position. The bottom end of the gathering groove (11) is provided with a dust discharge outlet (13). The free end of the dust discharge outlet (13) is connected to a dust discharge pipe (6). The dust discharge pipe (6) extends through to the outside of the washing tower body (1).

7. A scrubbing tower for treating yellow phosphorus tail gas according to claim 6, characterized in that: The top surface of the arc-shaped top plate (24) away from the L-separation frame plate (7) is welded with an arc-shaped ear plate (8). The outer wall of the arc-shaped ear plate (8) matches the inner wall of the washing tower body (1) and is connected to the washing tower body (1) by bolts.

8. A scrubbing tower for treating yellow phosphorus tail gas according to claim 7, characterized in that: There is a gap (16) between the outer frame of the upper filter screen (14) and the outer frame of the lower filter screen (15), and the height of the gap (16) is equal to the height of the intermediate plate (17); The filter ends on opposite sides of the upper filter screen (14) and the lower filter screen (15) are both set as protruding ends (20), and the height dimension of the two protruding ends (20) spliced ​​together is equal to the height dimension of the gap (16) or the intermediate plate (17).

9. A scrubbing tower for treating yellow phosphorus tail gas according to claim 8, characterized in that: The dust cleaning assembly includes a striking cleaning motor (5) installed on the outer wall of the washing tower body (1), a fixing ring (21) fixedly sleeved on the output shaft of the striking cleaning motor (5), a rocker arm (22) welded to the top of the fixing ring (21), and a dust cleaning striking plate (23) fixed to the free end of the rocker arm (22).

10. A scrubbing tower for treating yellow phosphorus tail gas according to claim 9, characterized in that: The dust cleaning impact plate (23) has an arc-shaped structure and is made of rubber.

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