Tail gas washing device

Abstract

The embodiment of the utility model provides a tail gas washing device, and relates to the technical field of washing. The tail gas washing device comprises a tower body, a hollow sleeve is arranged on the upper side of the tower body, a cleaning mechanism is slidably connected into the hollow sleeve, the cleaning mechanism is connected with a deaerator through a pipeline, and deoxygenated reclaimed water in the deaerator is conveyed into the cleaning mechanism through a water pump. According to the utility model, the reclaimed water for removing free oxygen in the deaerator is conveyed into the water conduit through the water pump, the reclaimed water is sprayed to the inner wall of the tower body through the spray head I and the spray head II so as to wash the inner wall of the tower body, and the reclaimed water is used for replacing turbine condensate of the olefin separation tower body, so that not only can the water cost of the tower body be reduced, but also the sewage treatment cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water washing, in particular to a tail gas water washing device. Background Art

[0002] Whether it is traditional petroleum cracking to produce olefins or coal to produce olefins, water scrubber blockage is a common problem. Most solutions to water scrubber blockage are cleaning with chemical agents, turbine condensate or boiler feed water flushing, but the effects of this are not ideal. In order to prevent water scrubber blockage, some devices directly use turbine condensate or boiler feed water for water scrubbers, which will increase water use costs and sewage treatment costs. The selection of water for water scrubbers can not only delay water scrubber blockage, but also reduce production and operation costs, which is an inevitable trend in the development of this industry.

[0003] Among them, Chinese patent publication number: CN216537789U discloses a tail gas washing device for a tail gas washing tower, including an absorption part and a washing part from bottom to top, the absorption part includes a first cylinder, the lower end of the first cylinder is connected to a first end cap, a communicating vessel connected to the outside is installed on the first end cap, a tail gas inlet connected to the inside of the first cylinder is provided on the side wall of the first cylinder away from the first end cap, the washing part includes a second cylinder, the upper end of the second cylinder is provided with a second end cap, the top of the second end cap is provided with a tail gas outlet connected to the inside of the second cylinder, a plurality of packing washing units are also provided in the second cylinder, the lower end side walls of the packing washing units are provided with packing unloading holes adapted thereto, the upper end of the first cylinder is provided with a conical flare, the large diameter end of the conical flare is connected to the first cylinder, and the lower end of the second cylinder is connected to the small diameter end of the conical flare. The utility model has the beneficial effects of low energy consumption, convenient construction and convenient operation.

[0004] It can be seen that in order to clean the water washing tower in the prior art, a water washing unit is installed inside the water washing tower. However, in the prior art, the water used for the water washing tower is directly turbine condensate or boiler feed water, which will increase the water cost and sewage treatment cost. The selection of water for the water washing tower can not only delay the blockage of the water washing tower, but also reduce the production and operation costs, which is an inevitable trend of the development of this industry. Secondly, in most cases in the prior art, a fixed-position nozzle is used to wash the inner wall of the water washing tower. Therefore, when the water flows to the bottom of the water washing tower, the water flow rate becomes weaker, and it is difficult to clean the impurities and dirt at the bottom of the water washing tower. Utility Model Content

[0005] The utility model aims to provide a tail gas water washing device, which can avoid the situation in the prior art that the water for the water washing tower is directly turbine condensate or boiler feed water.

[0006] The utility model provides a tail gas washing device, comprising a tower body, a hollow sleeve is arranged on the upper side of the tower body, a cleaning mechanism is slidably connected inside the hollow sleeve, the cleaning mechanism is connected to a deaerator through a pipeline, the deoxygenated reclaimed water in the deaerator is transported to the cleaning mechanism through a water pump, the cleaning mechanism comprises a water guide pipe sliding in the hollow sleeve, the lower end of the water guide pipe is connected to an annular pipe 2, the annular pipe 2 is annularly distributed with two nozzles, the water outlet of the pipeline is connected to the water inlet at the upper end of the water guide pipe, the pipeline passes through the hollow sleeve and is connected to the hollow sleeve A sliding connection is provided, a connecting piece is provided on the outer side of the water diversion pipe located on the upper side of the annular tube 2, and an annular brush is connected to the outer side of the connecting piece, and the bristles of the annular brush are in contact with the inner wall of the tower body, and an annular tube 1 is provided on the water diversion pipe located on the upper side of the annular brush, and nozzles 1 are distributed in an annular manner around the annular tube 1. A slide groove is provided on one side of the hollow sleeve, and an extension plate is provided on one side of the upper end of the water diversion pipe, and the extension plate is slidably connected to the slide groove, a screw rod is rotatably provided in the slide groove, and the screw rod is threadedly connected to the extension plate, and the screw rod is driven by a motor.

[0007] Preferably, the position of the nozzle one and the position of the nozzle two are arranged alternately.

[0008] Preferably, an anti-slip plate is provided at the end of the water diversion pipe, and the size of the anti-slip plate is larger than the size of the lower opening of the hollow sleeve.

[0009] Preferably, a discharge port is provided at the lower side of the tower body, and an exhaust port is provided at the upper side of the tower body.

[0010] Compared with the prior art, the tail gas washing device provided in the embodiment of the utility model has the following advantages:

[0011] 1. The utility model uses a water pump to transport the reclaimed water from the deaerator to remove free oxygen into the water diversion pipe, sprays the reclaimed water to the inner wall of the tower body through nozzles 1 and 2, and then washes the inner wall of the tower body. The reclaimed water is used to replace the turbine condensate of the olefin separation tower body, which can not only reduce the water cost of the tower body, but also reduce the sewage treatment cost.

[0012] 2. The utility model rotates the screw rod to move the extension plate with the water diversion pipe downward, and the water diversion pipe moves downward with the annular pipe 1, the annular pipe 2 and the annular brush, and the inner wall of the tower body is first flushed through the annular pipe 2, and then the inner wall of the tower body is cleaned by the annular brush, and finally the inner wall of the tower body cleaned by the annular brush is strengthened by the annular pipe 1, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the following is a brief introduction to the drawings required for use in the implementation mode. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 It is a schematic side view of the overall structure of an embodiment of the utility model;

[0016] Figure 3 A schematic cross-sectional view of a tower structure according to an embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the cleaning mechanism structure of an embodiment of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the staggered state of the nozzle 1 and the nozzle 2 in the embodiment of the utility model;

[0019] Figure 6 It is a schematic cross-sectional view of the hollow sleeve structure of an embodiment of the utility model.

[0020] Reference numerals:

[0021] 1. Tower body; 2. Discharge port; 3. Exhaust port; 4. Hollow sleeve; 5. Pipeline; 6. Water pump; 7. Deaerator; 8. Water diversion pipe; 9. Annular tube 1; 10. Nozzle 1; 11. Connecting piece; 12. Annular brush; 13. Annular tube 2; 14. Nozzle 2; 15. Screw; 16. Anti-slip plate; 17. Extension plate. DETAILED DESCRIPTION

[0022] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0023] Please refer to Figure 1-Figure 6 The utility model embodiment provides a tail gas washing device, including a tower body 1, a discharge port 2 is opened on the lower side of the tower body 1, when the tower body 1 is cleaned, the discharge port 2 is sealed to prevent the discharge of sewage containing harmful substances after cleaning, and an exhaust port 3 is opened on the upper side of the tower body 1.

[0024] A hollow sleeve 4 is provided on the upper side of the tower body 1, and a cleaning mechanism is slidably connected inside the hollow sleeve 4. The cleaning mechanism is connected to the deaerator 7 through a pipeline 5, and the deoxygenated reclaimed water in the deaerator 7 is transported to the cleaning mechanism through a water pump 6.

[0025] Since the cleaning mechanism includes a water pipe 8 sliding in the hollow sleeve 4, the water outlet of the pipe 5 is connected to the water inlet at the upper end of the water pipe 8, the pipe 5 passes through the hollow sleeve 4 and is slidably connected to the hollow sleeve 4, and the reclaimed water from which free oxygen is removed in the deaerator 7 is transported to the water pipe 8 through the water pump 6. The lower end of the water pipe 8 is connected to an annular pipe 2 13, and nozzles 2 14 are distributed in an annular manner around the annular pipe 2 13. The nozzles 2 14 are in an inclined state, and the reclaimed water is sprayed toward the inner wall of the tower body 1 by the nozzles 2 14 to wash the inner wall of the tower body 1.

[0026] Furthermore, a connecting piece 11 is provided on the outside of the water pipe 8 located on the upper side of the annular pipe 13, and an annular brush 12 is connected to the outside of the connecting piece 11. The bristles of the annular brush 12 are in contact with the inner wall of the tower body 1. The annular brush 12 can brush and clean the inner wall of the tower body 1 to assist the flushing effect of the nozzle 14.

[0027] In addition, an annular pipe 9 is arranged on the water guide pipe 8 located on the upper side of the annular brush 12, and nozzles 10 are distributed in an annular manner around the annular pipe 9. The nozzles 10 are located at the uppermost end and can re-wash the inner wall of the tower body 1 cleaned by the annular brush 12 to improve the cleaning effect.

[0028] In addition, the position of the nozzle 1 10 and the position of the nozzle 2 14 are staggered, so that the nozzle 1 10 and the nozzle 2 14 can meet the effect of fully flushing the inner wall of the tower body 1 .

[0029] Furthermore, a slide groove is opened on one side of the hollow sleeve 4, and an extension plate 17 is arranged on one side of the upper end of the water diversion pipe 8. The extension plate 17 is slidably connected to the slide groove. At the same time, a screw rod 15 is rotatably arranged in the slide groove. The screw rod 15 is threadedly connected to the extension plate 17. The screw rod 15 is driven by a motor. After the screw rod 15 rotates, the extension plate 17 automatically slides in the slide groove, so that the water diversion pipe 8 pulls the pipeline 5 to move downward, and then the annular brush 12 cleans the inner wall of the tower body 1, and at the same time strengthens the flushing force of the nozzle 10 and the nozzle 2 14.

[0030] In order to improve the stability of the water diversion pipe 8 when it moves, an anti-slip plate 16 is provided at the end of the water diversion pipe 8. The size of the anti-slip plate 16 is larger than the size of the lower opening of the hollow sleeve 4. The anti-slip plate 16 slides in the hollow sleeve 4. When the upper end of the water diversion pipe 8 slides to the lower end of the hollow sleeve 4, the anti-slip plate 16 is used to cover the upper side of the opening of the hollow sleeve 4 to prevent the water diversion pipe 8 from separating from the hollow sleeve 4.

[0031] In summary, the working principle of the exhaust gas washing device of the embodiment of the utility model is as follows: the water pump 6 transports the medium water in the deaerator 7 to remove the free oxygen to the water pipe 8, and sprays the medium water to the inner wall of the tower body 1 through the nozzle 1 10 and the nozzle 2 14, so as to wash the inner wall of the tower body 1, and the rotation of the screw 15 causes the extension plate 17 to move downward with the water pipe 8, so that the water pipe 8 moves downward with the annular pipe 1 9, the annular pipe 2 13 and the annular brush 12, and the inner wall of the tower body 1 is firstly washed through the annular pipe 2 13, and then the inner wall of the tower body 1 is cleaned by the annular brush 12, and finally the inner wall of the tower body 1 cleaned by the annular brush 12 is strengthened by the annular pipe 1 9.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tail gas washing device, comprising a tower body (1), characterized in that: A hollow sleeve (4) is provided on the upper side of the tower body (1), and a cleaning mechanism is slidably connected inside the hollow sleeve (4). The cleaning mechanism is connected to the deaerator (7) through a pipeline (5). The deoxygenated reclaimed water in the deaerator (7) is transported to the cleaning mechanism through a water pump (6). The cleaning mechanism includes a water diversion pipe (8) sliding in the hollow sleeve (4), the lower end of the water diversion pipe (8) is connected to an annular pipe 2 (13), and nozzles 2 (14) are distributed in an annular manner around the annular pipe 2 (13). The water outlet of the pipeline (5) is connected to the water inlet at the upper end of the water diversion pipe (8). The pipeline (5) passes through the hollow sleeve (4) and is slidably connected to the hollow sleeve (4). The pipeline (5) is located on the annular pipe 2 (13). A connecting piece (11) is arranged on the outer side of the water supply pipe (8) on the side, and an annular brush (12) is connected to the outer side of the connecting piece (11), and the bristles of the annular brush (12) are in contact with the inner wall of the tower body (1). An annular tube (9) is arranged on the water supply pipe (8) on the upper side of the annular brush (12), and nozzles (10) are distributed in an annular manner around the annular tube (9). A slide groove is provided on one side of the hollow sleeve (4), and an extension plate (17) is arranged on one side of the upper end of the water supply pipe (8), and the extension plate (17) is slidably connected to the slide groove. A screw rod (15) is rotatably arranged in the slide groove, and the screw rod (15) is threadedly connected to the extension plate (17), and the screw rod (15) is driven by a motor.

2. The tail gas washing device according to claim 1, characterized in that: The position of the nozzle one (10) and the position of the nozzle two (14) are arranged alternately.

3. The tail gas washing device according to claim 1, characterized in that: An anti-slip plate (16) is provided at the end of the water diversion pipe (8), and the size of the anti-slip plate (16) is larger than the size of the lower opening of the hollow sleeve (4).

4. The tail gas washing device according to claim 1, characterized in that: A discharge port (2) is provided on the lower side of the tower body (1), and an exhaust port (3) is provided on the upper side of the tower body (1).

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