Monitoring and processing device for blockage of inlet filter screen of slurry circulating pump of absorption tower

Abstract

The invention relates to the technical field of absorption towers, in particular to a monitoring and processing device for blockage of an inlet filter screen of an absorption tower slurry circulating pump, which comprises: a main body module comprising an absorption tower unit, an inlet unit, a circulating pump unit, a first pollution discharge unit and a second pollution discharge unit; the flushing unit comprises a monitoring unit, a backwashing unit, a cooling unit and a collecting unit; the device can quickly judge abnormal reasons, can timely wash the inlet filter screen main body, greatly shortens accident treatment time, can timely remove glass flakes falling off from the absorption tower out of the tower, ensures long-term safe and stable operation of the absorption tower, and ensures environmental protection and safety.

Description

Technical Field

[0001] The invention relates to the technical field of absorption towers, in particular to a monitoring and processing device for clogging of an inlet filter screen of a slurry circulation pump of an absorption tower. Background Art

[0002] The function of the slurry circulation pump is to continuously pressurize the slurry in the reaction zone of the absorption tower to provide slurry spray to the spray layer in the tower. Through the nozzle atomization, a strong droplet environment is formed in the slurry spray area. The droplets are fully in contact with the flue gas flowing upstream to absorb sulfur dioxide gas, thereby ensuring an appropriate liquid-gas ratio to reliably remove sulfur dioxide from the flue gas. However, due to the long-term high temperature and corrosive environment of the glass flake anti-corrosion layer in the absorption tower and the problem of service life, the anti-corrosion layer is easy to fall off and block the inlet filter of the slurry circulation pump. If not handled in time, the tiny glass flakes will flow with the slurry circulation. The pump enters the spray layer, thereby clogging the nozzle and causing a decrease in desulfurization efficiency. Under high load conditions, it is difficult to control the sulfur dioxide concentration at the chimney outlet, resulting in environmental incidents and slurry poisoning due to large-flow slurry supply. In addition, since the DCS does not have a slurry circulation pump outlet pressure measurement point, outlet pressure low report, high report, current low report and high alarm signal, there is no alarm when the slurry circulation pump operates abnormally, and on-site inspection and judgment are required. When it is judged that the inlet filter is blocked, there is no inlet filter backwashing program control and absorption tower sewage filtration, and the problem cannot be discovered and handled in time, affecting environmental safety. Summary of the invention

[0003] In view of the above problems existing in the prior art, the present invention is proposed.

[0004] Therefore, the object of the present invention is to provide a monitoring and processing device for clogging of the filter screen at the inlet of the slurry circulation pump of the absorption tower.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: including a main module, including an absorption tower unit, an inlet unit, a circulation pump unit, a first sewage discharge unit and a second sewage discharge unit; a flushing unit, including a monitoring unit, a backwashing unit, a cooling unit and a collection unit.

[0006] As a preferred solution of the monitoring and processing device for the blockage of the inlet filter screen of the absorption tower slurry circulation pump of the present invention, the absorption tower unit includes an absorption tower body, an agitator and a delivery pipe, the delivery pipe is connected to the absorption tower body, and the agitator is arranged in the absorption tower body.

[0007] As a preferred solution of the monitoring and processing device for the blockage of the inlet filter of the slurry circulation pump of the absorption tower of the present invention, the inlet unit includes an inlet valve, a first pipeline and a second pipeline, the inlet valve is connected to the first pipeline and the second pipeline, and the first pipeline is connected to the absorption tower body.

[0008] As a preferred solution of the monitoring and processing device for the blockage of the inlet filter of the absorption tower slurry circulation pump of the present invention, the circulation pump unit includes a first slurry circulation pump, a second slurry circulation pump, a third slurry circulation pump and a fourth slurry circulation pump, and the first slurry circulation pump, the second slurry circulation pump, the third slurry circulation pump and the fourth slurry circulation pump are all connected to the second pipeline.

[0009] As a preferred solution of the monitoring and processing device for the blockage of the inlet filter of the absorption tower slurry circulation pump of the present invention, the first sewage discharge unit includes a first sewage discharge pipe, a sewage discharge valve and a second sewage discharge pipe, the sewage discharge valve is connected to the first sewage discharge pipe and the second sewage discharge pipe, and the first sewage discharge pipe is connected to the second pipeline.

[0010] As a preferred solution of the monitoring and processing device for the blockage of the inlet filter screen of the slurry circulation pump of the absorption tower of the present invention, the second sewage discharge unit includes a third sewage discharge pipe, a manual sewage discharge door, a fourth sewage discharge pipe, an electric sewage discharge door, a fifth sewage discharge pipe and a detachable filter screen, the third sewage discharge pipe is connected with the absorption tower body and the manual sewage discharge door, the fourth sewage discharge pipe is connected with the manual sewage discharge door and the electric sewage discharge door, and the fifth sewage discharge pipe is connected with the electric sewage discharge door.

[0011] As a preferred solution of the monitoring and processing device for the blockage of the inlet filter of the absorption tower slurry circulation pump of the present invention, the monitoring unit includes a third pipeline, a fourth pipeline, an outlet pressure measuring point and a current measuring point, the third pipeline is connected to the fourth pipeline, and the third pipeline is connected to the first slurry circulation pump, the second slurry circulation pump, the third slurry circulation pump and the fourth slurry circulation pump.

[0012] As a preferred solution of the monitoring and processing device for the blockage of the inlet filter of the slurry circulation pump of the absorption tower of the present invention, the backwashing unit includes an inlet filter body, a first flushing pipe, a second flushing pipe, a flushing valve and a backwashing program control, the backwashing program control is connected to the flushing valve, the second flushing pipe is connected to the flushing valve and the first flushing pipe, and the flushing valve is connected to the fourth pipeline.

[0013] As a preferred solution of the monitoring and processing device for the blockage of the inlet filter of the absorption tower slurry circulation pump of the present invention, the cooling unit includes a fifth pipeline, a sixth pipeline, a seventh pipeline, a first valve and an eighth pipeline, the fifth pipeline is connected to the first flushing pipe, the sixth pipeline is connected to the seventh pipeline and the fifth pipeline, and the eighth pipeline is connected to the first slurry circulation pump, the second slurry circulation pump, the third slurry circulation pump and the fourth slurry circulation pump.

[0014] As a preferred solution of the monitoring and processing device for the blockage of the inlet filter of the absorption tower slurry circulation pump of the present invention, the collection unit includes a first collection pipe, a second valve and a second collection pipe, the first collection pipe is connected to the first slurry circulation pump, the second slurry circulation pump, the third slurry circulation pump and the fourth slurry circulation pump, and the second valve is connected to the first collection pipe and the second collection pipe.

[0015] The beneficial effects of the monitoring and processing device for the clogging of the inlet filter of the slurry circulation pump of the absorption tower of the present invention are as follows: by setting the main body module and the flushing module, it is possible to implement monitoring of the low and high alarm signals of the outlet pressure and the low and high alarm signals of the current, so as to achieve the purpose of quickly judging the cause of the abnormality and timely flushing the inlet filter body, which greatly shortens the accident handling time and can timely remove the glass flakes that have fallen off in the absorption tower out of the tower, thereby ensuring the long-term safe and stable operation of the absorption tower, ensuring environmental safety, and solving the problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is an overall schematic diagram of the monitoring and treatment device for blockage of the inlet filter of the absorption tower slurry circulation pump.

[0018] Figure 2 This is an overall schematic diagram of the monitoring and treatment device for blockage of the inlet filter of the absorption tower slurry circulation pump.

[0019] Figure 3 This is an overall schematic diagram of the monitoring and treatment device for blockage of the inlet filter of the absorption tower slurry circulation pump.

[0020] Figure 4 This is an overall schematic diagram of the monitoring and treatment device for blockage of the inlet filter of the absorption tower slurry circulation pump.

[0021] Figure 5 This is an overall schematic diagram of the monitoring and treatment device for blockage of the inlet filter of the absorption tower slurry circulation pump.

[0022] In the figure: 100, main module; 101, absorption tower unit; 101a, absorption tower body; 101b, agitator; 101c, delivery pipe; 102, inlet unit; 102a, inlet valve; 102b, first pipeline; 102c, second pipeline; 103, circulation pump unit; 103a, first slurry circulation pump; 103b, second slurry circulation pump; 103c, third slurry circulation pump; 103d, fourth slurry circulation pump; 104, first sewage unit; 104a, first sewage pipe; 104b, sewage valve; 104c, second sewage pipe; 105, second sewage unit; 105a, third sewage pipe; 105b, sewage manual door; 105c, fourth sewage pipe; 105d, sewage electric door ; 105e, the fifth sewage pipe; 105f, the removable filter; 200, the flushing module; 201, the monitoring unit; 201a, the third pipeline; 201b, the fourth pipeline; 201c, the outlet pressure measuring point; 201d, the current measuring point; 202, the backwashing unit; 202a, the inlet filter body; 202b, the first flushing pipe; 202c, the second flushing pipe; 202d, the flushing valve; 202e, the backwashing program control; 203, the cooling unit; 203a, the fifth pipeline; 203b, the sixth pipeline; 203c, the seventh pipeline; 203d, the first valve; 203e, the eighth pipeline; 204, the collecting unit; 204a, the first collecting pipe; 204b, the second valve; 204c, the second collecting pipe. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Example 1

[0027] Reference Figure 1 to Figure 4, which is the first embodiment of the present invention, and provides a monitoring and processing device for the blockage of the inlet filter of the slurry circulation pump of the absorption tower, which includes a main module 100, including an absorption tower unit 101, an inlet unit 102, a circulation pump unit 103, a first sewage discharge unit 104 and a second sewage discharge unit 105; a flushing unit, including a monitoring unit 201, a backwashing unit 202, a cooling unit 203 and a collection unit 204.

[0028] Further, the absorption tower unit 101 includes an absorption tower body 101a, an agitator 101b and a delivery pipe 101c, the delivery pipe 101c is connected to the absorption tower body 101a, and the agitator 101b is arranged in the absorption tower body 101a; the inlet unit 102 includes an inlet valve 102a, a first pipeline 102b and a second pipeline 102c, the inlet valve 102a is connected to the first pipeline 102b and the second pipeline 102c, the first pipeline 102b is connected to the absorption tower body 101a, and the inlet valve 102a is connected to the first pipeline 102b and the second pipeline 102c, and the first pipeline 102b is connected to the absorption tower body 101a. The circulation pump unit 103 includes a first slurry circulation pump 103a, a second slurry circulation pump 103b, a third slurry circulation pump 103c and a fourth slurry circulation pump 103d, and the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d are all connected to the second pipeline 102c; the first sewage unit 104 includes a first sewage pipe 104a, a sewage valve 104b and a second sewage pipe 104c, and the sewage valve 10 4b is connected to the first sewage pipe 104a and the second sewage pipe 104c, the first sewage pipe 104a is connected to the second pipeline 102c; the second sewage unit 105 includes a third sewage pipe 105a, a sewage manual door 105b, a fourth sewage pipe 105c, a sewage electric door 105d, a fifth sewage pipe 105e and a detachable filter 105f, the third sewage pipe 105a is connected to the absorption tower body 101a and the sewage manual door 105b, the fourth sewage pipe 105c is connected to the sewage manual door 105b is connected to the sewage electric door 105d, and the fifth sewage pipe 105e is connected to the sewage electric door 105d; the monitoring unit 201 includes a third pipeline 201a, a fourth pipeline 201b, an outlet pressure measuring point 201c and a current measuring point 201d, the third pipeline 201a is connected to the fourth pipeline 201b, and the third pipeline 201a is connected to the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d.

[0029] Among them, there are three agitators 101b in the absorption tower, which is the existing technology and will not be elaborated here. The delivery pipe 101c delivers the flue gas that meets the environmental emission standards to the clean flue gas system of the #1 absorption tower. There are four inlet units 102, four first sewage discharge units 104, and the four first sewage discharge units 104 are respectively distributed at the four inlet units 102. There are four monitoring units 201, and the four monitoring units 201 are respectively distributed at the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d.

[0030] When in use, the four inlet valves 102a are started, so that the slurry in the absorption tower is transported to the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d through the first pipeline 102b and the second pipeline 102c, and the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d are started at the same time, so that the slurry is transported to the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d through the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d. The third slurry circulation pump 103c and the fourth slurry circulation pump 103d, the third pipeline 201a and the fourth pipeline 201b are transported to the absorption tower to realize the circulation of the slurry to absorb sulfur dioxide in the flue gas so that the flue gas meets the environmental emission standards. When the slurry flows in the third conduit and the fourth pipeline 201b, the outlet pressure low report, high report and current low and high alarm signals are monitored through the outlet pressure measuring point 201c and the current measuring point 201d, so that the operating personnel can quickly determine the cause of the abnormality according to the outlet pressure and current change trends;

[0031] When abnormal conditions such as glass flakes falling off occur in the absorption tower body 101a, the electric sewage discharge door 105d is opened, and with the cooperation of the removable filter 105f, the slurry carrying glass flakes is discharged through the third sewage pipe 105a, the fourth sewage pipe 105c and the fifth sewage pipe 105e. The slurry is filtered under the action of the removable filter 105f, so that the glass flakes falling off in the absorption tower are removed from the tower in time, ensuring the long-term safe and stable operation of the absorption tower and ensuring environmental safety.

[0032] Example 2

[0033] Reference Figure 5, which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a monitoring and processing device for clogging of the inlet filter screen of the absorption tower slurry circulation pump, which includes a backwashing unit 202 including an inlet filter screen body 202a, a first flushing pipe 202b, a second flushing pipe 202c, a flushing valve 202d and a backwashing program 202e, the backwashing program 202e is connected to the flushing valve 202d, the second flushing pipe 202c is connected to the flushing valve 202d and the first flushing pipe 202b, and the flushing valve 202d is connected to the fourth pipeline 201b; the cooling unit 203 includes a fifth pipeline 203a, a sixth pipeline 203b, a seventh pipeline 203c, a first valve 203d and an eighth pipeline 203e, The fifth pipeline 203a is connected to the first flushing pipe 202b, the sixth pipeline 203b is connected to the seventh pipeline 203c and the fifth pipeline 203a, and the eighth pipeline 203e is connected to the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d; the collecting unit 204 includes a first collecting pipe 204a, a second valve 204b and a second collecting pipe 204c, the first collecting pipe 204a is connected to the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d, and the second valve 204b is connected to the first collecting pipe 204a and the second collecting pipe 204c.

[0034] Specifically, four flushing valves 202d and four backwashing program controls 202e are provided, and the corresponding backwashing program controls 202e are connected to the corresponding flushing valves 202d to control the start and stop of the flushing valves 202d. The eighth pipeline 203e is connected to the first valve 203d, and the corresponding first valve 203d is connected to the fifth pipeline 203a, and the corresponding first valve 203d is connected to the seventh pipeline 203c. Four first collecting pipes 204a and four second valves 204b are provided.

[0035] When in use, in conjunction with Example 1, when the inlet filter body 202a is judged to be blocked by the outlet pressure low alarm, high alarm and current low, high alarm signal, the flushing valve 202d is started by the backwashing program control 202e, and water from the process water is transported to the fourth pipeline 201b through the first flushing pipe 202b, the second flushing pipe 202c and the flushing valve 202d, so as to flush the inlet filter body 202a in time, greatly shortening the accident handling time, and at the same time starting the first valve 203d, so that a part of the ... and at the same time starting the The fifth pipeline 203a, the sixth pipeline 203b, the seventh pipeline 203c, the first valve 203d and the eighth pipeline 203e transport the water to the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d to cool the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d, and then the second valve 204b is started to send the cooled water to the industrial water collection pit through the first collecting pipe 204a and the second collecting pipe 204c.

[0036] Example 3

[0037] Reference Figure 1 to Figure 5 , which is the third embodiment of the present invention, is different from the previous embodiment in that this embodiment provides a monitoring and processing device for clogging of the filter screen at the inlet of the slurry circulation pump of the absorption tower, which includes:

[0038] 1. An outlet pressure measuring point 201c is respectively set at the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d, and the rated outlet pressure is set. When the outlet pressure decreases by 40KPa, an outlet pressure low sound and light alarm is issued, and when the outlet pressure increases by 40KPa, an outlet pressure high sound and light alarm is issued.

[0039] 2. A current measuring point 201d is respectively set at the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d, and the rated current is set. When the current decreases by 10A during operation, a low current sound and light alarm is issued for the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d. When the current increases by 10A during operation, a high current sound and light alarm is issued for the slurry circulation pump.

[0040] 3. A backwashing program control 202e is provided at each of the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d, and can only be operated when the outlet pressure low report and the current low report exist at the same time.

[0041] 4. Install an electric sewage discharge door 105d behind the manual sewage discharge door 105b of the absorption tower body 101a, and set a removable filter 105f at the outlet of the fourth sewage discharge pipe 105c. When abnormal working conditions such as glass flakes falling off in the absorption tower body 101a occur, open the electric sewage discharge door 105d to filter the sewage of the absorption tower body 101a, and remove the glass flakes falling off in the absorption tower from the tower in time; the specific steps are:

[0042] Stop the first slurry circulation pump 103a, the second slurry circulation pump 103b, the third slurry circulation pump 103c and the fourth slurry circulation pump 103d;

[0043] Open flushing valve 202d, and close after 600 seconds (delay can be set);

[0044] Close the inlet valve 102a;

[0045] Open the first drain valve 104b;

[0046] An electric sewage discharge door 105d is installed in front of the manual sewage discharge door 105b of the absorption tower, and a removable filter 105f is set at the outlet of the sewage pipe. The electric sewage discharge door 105d is kept closed at ordinary times, and the manual sewage discharge door 105b is 30% open. When abnormal conditions such as glass flakes falling off in the absorption tower body 101a occur, the electric sewage discharge door 105d is opened to filter the absorption tower slurry sewage, and the glass flakes that have fallen off in the absorption tower are removed from the tower in time.

[0047] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0048] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0049] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A monitoring and processing device for clogging of the filter screen at the inlet of the slurry circulation pump of an absorption tower, characterized in that: include, The main module (100) comprises an absorption tower unit (101), an inlet unit (102), a circulation pump unit (103), a first sewage discharge unit (104) and a second sewage discharge unit (105); The flushing module (200) comprises a monitoring unit (201), a backwashing unit (202), a cooling unit (203) and a collecting unit (204).

2. The monitoring and processing device for clogging of the filter screen at the inlet of the absorption tower slurry circulation pump according to claim 1, characterized in that: The absorption tower unit (101) comprises an absorption tower body (101a), an agitator (101b) and a delivery pipe (101c), wherein the delivery pipe (101c) is connected to the absorption tower body (101a), and the agitator (101b) is arranged in the absorption tower body (101a).

3. The monitoring and processing device for clogging of the filter screen at the inlet of the absorption tower slurry circulation pump according to claim 2, characterized in that: The inlet unit (102) comprises an inlet valve (102a), a first pipeline (102b) and a second pipeline (102c), the inlet valve (102a) is connected with the first pipeline (102b) and the second pipeline (102c), and the first pipeline (102b) is connected with the absorption tower body (101a).

4. The monitoring and processing device for clogging of the filter screen at the inlet of the absorption tower slurry circulation pump according to claim 3, characterized in that: The circulation pump unit (103) comprises a first slurry circulation pump (103a), a second slurry circulation pump (103b), a third slurry circulation pump (103c) and a fourth slurry circulation pump (103d); the first slurry circulation pump (103a), the second slurry circulation pump (103b), the third slurry circulation pump (103c) and the fourth slurry circulation pump (103d) are all connected to the second pipeline (102c).

5. The monitoring and processing device for clogging of the filter screen at the inlet of the absorption tower slurry circulation pump according to claim 4, characterized in that: The first sewage discharge unit (104) comprises a first sewage discharge pipe (104a), a sewage discharge valve (104b) and a second sewage discharge pipe (104c); the sewage discharge valve (104b) is connected to the first sewage discharge pipe (104a) and the second sewage discharge pipe (104c); and the first sewage discharge pipe (104a) is connected to the second pipeline (102c).

6. The monitoring and processing device for clogging of the filter screen at the inlet of the absorption tower slurry circulation pump according to claim 5, characterized in that: The second sewage discharge unit (105) comprises a third sewage discharge pipe (105a), a manual sewage discharge door (105b), a fourth sewage discharge pipe (105c), an electric sewage discharge door (105d), a fifth sewage discharge pipe (105e) and a detachable filter screen (105f); the third sewage discharge pipe (105a) is connected to the absorption tower body (101a) and the manual sewage discharge door (105b); the fourth sewage discharge pipe (105c) is connected to the manual sewage discharge door (105b) and the electric sewage discharge door (105d); and the fifth sewage discharge pipe (105e) is connected to the electric sewage discharge door (105d).

7. The monitoring and processing device for clogging of the filter screen at the inlet of the absorption tower slurry circulation pump according to claim 6, characterized in that: The monitoring unit (201) comprises a third pipeline (201a), a fourth pipeline (201b), an outlet pressure measuring point (201c) and a current measuring point (201d); the third pipeline (201a) is connected to the fourth pipeline (201b); the third pipeline (201a) is connected to the first slurry circulation pump (103a), the second slurry circulation pump (103b), the third slurry circulation pump (103c) and the fourth slurry circulation pump (103d).

8. The monitoring and processing device for clogging of the filter screen at the inlet of the absorption tower slurry circulation pump according to claim 7, characterized in that: The backwash unit (202) comprises an inlet filter body (202a), a first flushing pipe (202b), a second flushing pipe (202c), a flushing valve (202d) and a backwashing program control (202e), wherein the backwashing program control (202e) is connected to the flushing valve (202d), the second flushing pipe (202c) is connected to the flushing valve (202d) and the first flushing pipe (202b), and the flushing valve (202d) is connected to the fourth pipeline (201b).

9. The monitoring and processing device for clogging of the filter screen at the inlet of the absorption tower slurry circulation pump according to claim 8, characterized in that: The cooling unit (203) comprises a fifth pipeline (203a), a sixth pipeline (203b), a seventh pipeline (203c), a first valve (203d) and an eighth pipeline (203e); the fifth pipeline (203a) is connected to the first flushing pipe (202b); the sixth pipeline (203b) is connected to the seventh pipeline (203c) and the fifth pipeline (203a); and the eighth pipeline (203e) is connected to the first slurry circulation pump (103a), the second slurry circulation pump (103b), the third slurry circulation pump (103c) and the fourth slurry circulation pump (103d).

10. The monitoring and processing device for clogging of the filter screen at the inlet of the absorption tower slurry circulation pump according to claim 9, characterized in that: The collecting unit (204) includes a first collecting pipe (204a), a second valve (204b) and a second collecting pipe (204c), the first collecting pipe (204a) is connected to the first slurry circulation pump (103a), the second slurry circulation pump (103b), the third slurry circulation pump (103c) and the fourth slurry circulation pump (103d), and the second valve (204b) is connected to the first collecting pipe (204a) and the second collecting pipe (204c).

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