CN213050057U - Limestone slurry supply system of wet desulphurization absorption tower - Google Patents
Limestone slurry supply system of wet desulphurization absorption tower Download PDFInfo
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- CN213050057U CN213050057U CN202021079591.3U CN202021079591U CN213050057U CN 213050057 U CN213050057 U CN 213050057U CN 202021079591 U CN202021079591 U CN 202021079591U CN 213050057 U CN213050057 U CN 213050057U
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Abstract
The utility model provides a wet flue gas desulfurization absorption tower lime stone supplies thick liquid system. Including first limestone slurry case and second limestone slurry case that have the agitator in it, first confession thick liquid pump, the second confession thick liquid pump, the third confession thick liquid pump, the fourth confession thick liquid pump, first confession thick liquid female pipe, the second confession thick liquid female pipe, first branch pipe, the second branch pipe, the third branch pipe, the fourth branch pipe, first absorption tower and second absorption tower, the one end of first confession thick liquid female pipe and the one end that the second confession thick liquid female pipe are connected with first limestone slurry case respectively, the other end of first confession thick liquid female pipe is connected with first absorption tower through first branch pipe respectively, the second branch pipe is connected with the second absorption tower, the other end that the second confession thick liquid female pipe is connected with first absorption tower through the third branch pipe respectively, the fourth branch pipe is connected with the second absorption tower. The system has flexible combined operation mode, convenient equipment maintenance and accident treatment, and can reduce the occurrence of environmental protection accidents caused by the interruption of slurry supply of the absorption tower.
Description
Technical Field
The utility model relates to a desulfurization technical field particularly, relates to a wet flue gas desulfurization absorption tower lime stone supplies thick liquid system.
Background
The existing limestone slurry supply system for the wet desulphurization absorption tower of a thermal power plant generally adopts a set of slurry supply system to supply slurry to two generator set absorption towers, generally adopts a limestone slurry tank, two power frequency limestone slurry supply pumps (one for one is spare), the slurry supply pump outlet is provided with two slurry supply pipelines (one for one is spare), the limestone slurry circulates all the time through the slurry supply pipelines, and the corresponding slurry supplement valve is opened when the absorption tower needs slurry supplement. Or, a limestone powder pulping system and redundant arrangement of two power frequency limestone slurry supply pumps are added on the basis. This kind of absorption tower lime stone supplies thick liquid system, the lime stone thick liquid case overhauls inconveniently, easily causes the absorption tower to supply thick liquid to interrupt and then lead to the environmental protection incident to take place when supplying the thick liquid pump trouble.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wet flue gas desulfurization absorption tower lime stone supplies thick liquid system to solve foretell technical problem.
The embodiment of the utility model is realized like this: a limestone slurry supply system of a wet desulphurization absorption tower comprises a first limestone slurry tank, a second limestone slurry tank, a first slurry supply pump, a second slurry supply pump, a third slurry supply pump, a fourth slurry supply pump, a first slurry supply main pipe, a second slurry supply main pipe, a first branch pipe, a second branch pipe, a third branch pipe, a fourth branch pipe, a first absorption tower and a second absorption tower, wherein the first limestone slurry tank and the second limestone slurry tank are provided with stirrers inside, one end of the first slurry supply main pipe and one end of the second slurry supply main pipe are respectively connected with the first limestone slurry tank, the other end of the first slurry supply main pipe is respectively connected with the first absorption tower through the first branch pipe, the second branch pipe is connected with the second absorption tower, the other end of the second slurry supply main pipe is respectively connected with the first absorption tower through the third branch pipe, the fourth branch pipe is connected with the second absorption tower, the first slurry supply pump is arranged on the first slurry supply main pipe, the second supplies the stuff pump to set up the second supplies to starch on the female pipe, the third supplies the stuff pump to set up and is being connected the second limestone slurry case with the second supplies to starch on the first pipeline of female pipe, the fourth supplies the stuff pump to set up and is being connected the second limestone slurry case with on the first second pipeline that supplies to starch female pipe.
Optionally, the first slurry supply pump, the second slurry supply pump, the third slurry supply pump and the fourth slurry supply pump are all configured as variable frequency pumps.
Optionally, manual valves are provided on the second branch pipe and the third branch pipe.
Optionally, electrically operated valves are respectively disposed on the first branch pipe, the fourth branch pipe, the first pipeline and the second pipeline.
Optionally, a flow meter is respectively arranged on the first branch pipe and the fourth branch pipe.
Optionally, pressure gauges are respectively arranged on the first slurry supply main pipe and the second slurry supply main pipe.
Optionally, the wet flue gas desulfurization absorption tower limestone slurry supply system further comprises a process water discharge pipe, wherein the process water discharge pipe is respectively connected with the first slurry supply pump, the second slurry supply pump, the third slurry supply pump and the fourth slurry supply pump.
Optionally, the first limestone slurry tank and the second limestone slurry tank are respectively provided with a limestone powder adding port.
The embodiment of the utility model provides a beneficial effect is: any one of the first limestone slurry tank and the second limestone slurry tank of the wet desulphurization absorption tower limestone slurry supply system can supply slurry to the first absorption tower and the second absorption tower, and any one of the first slurry supply pump, the second slurry supply pump, the third slurry supply pump and the fourth slurry supply pump can supply slurry to the first absorption tower and the second absorption tower, the combination mode is very flexible, when partial limestone slurry tank, the slurry supply main pipe or the slurry supply pump are failed, other normal equipment can be flexibly applied to normally supply slurry, and the occurrence of environmental protection accidents caused by slurry supply interruption of the absorption tower is greatly reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a limestone slurry supply system of a wet desulphurization absorption tower provided by the embodiment of the utility model.
Icon: 100-a first limestone slurry tank; 110-a second limestone slurry tank; 120-a stirrer; 131-a first slurry supply pump; 132-a second slurry supply pump; 133-a third slurry supply pump; 134-a fourth slurry supply pump; 141-a first slurry supply main pipe; 1411-a first manifold; 1412-second branch pipe; 142-a second slurry supply main pipe; 1421 — third manifold; 1422 — fourth manifold; 150-manual valve; 160-a flow meter; 170-pressure gauge; 180-process water drainage pipe; 181-a first conduit; 182-a second conduit; 190-electric valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a limestone slurry supply system for a wet desulfurization absorption tower, where the limestone slurry supply system for the wet desulfurization absorption tower includes a first limestone slurry tank 100 and a second limestone slurry tank 110 having a stirrer 120 therein, a first slurry supply pump 131, a second slurry supply pump 132, a third slurry supply pump 133, a fourth slurry supply pump 134, a first slurry supply main pipe 141, a second slurry supply main pipe 142, a first branch pipe 1411, a second branch pipe 1412, a third branch pipe 1421, a fourth branch pipe 1422, a first absorption tower (not shown in the figure), and a second absorption tower (not shown in the figure), and it should be noted that, in fig. 1, slurries in the first branch pipe 1411 and the third branch pipe 1421 flow into the first absorption tower, and slurries in the second branch pipe 1412 and the fourth branch pipe 1422 flow into the second absorption tower.
The first limestone slurry tank 100 and the second limestone slurry tank 110 are respectively provided with a stirrer 120 inside, the stirrer 120 may include a stirring shaft and a stirring blade provided on the stirring shaft to stir the slurry therein, and the stirrer 120 may be driven to rotate by a motor installed outside the first limestone slurry tank 100 and the second limestone slurry tank 110.
One end of the first slurry supply main pipe 141 and one end of the second slurry supply main pipe 142 are respectively connected to the first limestone slurry tank 100, the other end of the first slurry supply main pipe 141 is respectively connected to the first absorption tower through a first branch pipe 1411, and the second branch pipe 1412 is connected to the second absorption tower, wherein the first branch pipe 1411 and the second branch pipe 1412 are connected to the other end of the first slurry supply main pipe 141 in parallel, in other words, the other end of the first slurry supply main pipe 141 is divided into two to form two branch pipes connected to the first absorption tower and the second absorption tower, respectively, the other end of the second slurry supply main pipe 142 is connected to the first absorption tower through a third branch pipe 1421, and the fourth branch pipe 1422 is connected to the second absorption tower, similarly, the third branch pipe 1421 and the fourth branch pipe 1422 are connected to the other end of the second slurry supply main pipe 142 in parallel, the first slurry supply pump 131 is disposed on the first slurry supply main pipe 141, and the second slurry supply pump 132 is disposed on the second slurry supply main pipe 142, the third slurry supply pump 133 is provided on a first pipe 181 connecting the second limestone slurry tank 110 and the second slurry supply main pipe 142, and the fourth slurry supply pump 134 is provided on a second pipe 182 connecting the second limestone slurry tank 110 and the first slurry supply main pipe 141.
In normal operation of the limestone slurry supply system of the wet desulfurization absorption tower, the slurry of the first absorption tower may be supplied by extracting the slurry in the first limestone slurry tank 100 by the first slurry supply pump 131 or the slurry in the second limestone slurry tank 110 by the fourth slurry supply pump 134, and the slurry of the second absorption tower may be supplied by extracting the slurry in the first limestone slurry tank 100 by the second slurry supply pump 132 or the slurry in the second limestone slurry tank 110 by the third slurry supply pump 133 by the second slurry supply pipe 142. When a failure occurs, for example, the first slurry supply pump 131 and the fourth slurry supply pump 134 fail simultaneously or the first slurry supply main pipe 141 fails, the slurry can be extracted by the second slurry supply pump 132 and the third slurry supply pump 133; similarly, if the second slurry supply pump 132 and the third slurry supply pump 133 are failed simultaneously or the second slurry supply main pipe 142 is failed, slurry can be extracted by the first slurry supply pump 131 and the fourth slurry supply pump 134; if three slurry supply pumps among the first slurry supply pump 131, the second slurry supply pump 132, the third slurry supply pump 133 and the fourth slurry supply pump 134 fail, the non-failed slurry supply pumps can be started, so that slurry can be supplied to the first absorption tower and the second absorption tower simultaneously through one slurry supply pump, and continuous supply of slurry is ensured. Therefore, any one of the first limestone slurry tank 100 and the second limestone slurry tank 110 of the wet desulphurization absorption tower limestone slurry supply system can supply slurry to the first absorption tower and the second absorption tower, and any one of the first slurry supply pump 131, the second slurry supply pump 132, the third slurry supply pump 133 and the fourth slurry supply pump 134 can supply slurry to the first absorption tower and the second absorption tower, so that the combination mode is very flexible, when part of the limestone slurry tanks, the slurry supply main pipes or the slurry supply pumps have faults, other normal devices can be flexibly applied to normal slurry supply, and the occurrence of environmental protection accidents caused by the interruption of slurry supply of the absorption towers is greatly reduced.
For example, when the first limestone slurry tank 100 needs to be overhauled, the fourth slurry supply pump 134 can be used for supplying slurry to the first slurry supply main pipe 141, and the third slurry supply pump 133 can be used for supplying slurry to the second slurry supply main pipe 142; on the contrary, if the second limestone slurry tank 110 needs to be overhauled, the first slurry supply pump 131 can be used for supplying slurry to the first slurry supply main pipe 141, and the second slurry supply pump 132 can be used for supplying slurry to the second slurry supply main pipe 142.
Referring to fig. 1, further, the first slurry supply pump 131, the second slurry supply pump 132, the third slurry supply pump 133, and the fourth slurry supply pump 134 are each configured as a variable frequency pump. The PH set value of first absorption tower and second absorption tower can be trailed to the inverter pump, compares power frequency confession stuff pump and beats the circulation and supply the thick liquid, and the design of the direct confession of confession stuff pump frequency conversion has reduced the slurry return pipeline, and initial investment reduces, the operation power consumption reduces, supplies thick liquid in succession still makes the difficult jam of confession thick liquid pipeline.
Referring to fig. 1, further, the second and third branch pipes 1412 and 1421 are provided with manual valves 150.
Referring to fig. 1, further, the electric valves 190 are respectively disposed on the first branch pipe 1411, the fourth branch pipe 1422, the first pipeline 181 and the second pipeline 182, and by disposing the electric valves 190 on the first pipeline 181 and the fourth branch pipe 1422, when the system normally operates, the slurry in the second limestone slurry tank 110 can be automatically controlled to enter the second absorption tower, and by disposing the electric valves 190 on the first branch pipe 1411 and the second pipeline 182, when the system normally operates, the slurry in the second limestone slurry tank 110 can be automatically controlled to enter the first absorption tower, which is beneficial to realizing accurate control of slurry inflow, and reducing the working strength of workers.
Referring to fig. 1, in addition, electric valves 190 are also provided on the first and second slurry supply mother pipes 141 and 142 so that the slurry in the first limestone slurry tank 100 can be automatically controlled to enter the first and second absorption towers.
Referring to fig. 1, in the present embodiment, the first branch pipe 1411 and the fourth branch pipe 1422 are respectively provided with a flow meter 160, so that the flow rates of the slurry entering the first absorption tower and the second absorption tower can be accurately measured during normal operation.
Referring to fig. 1, pressure gauges 170 are respectively disposed on the first slurry supply main pipe 141 and the second slurry supply main pipe 142, so that the pressure in the first slurry supply main pipe 141 and the second slurry supply main pipe 142 can be monitored.
Referring to fig. 1, the wet desulfurization absorption tower limestone slurry supply system further includes a process water discharge pipe 180, the process water discharge pipe 180 is respectively connected to the first slurry supply pump 131, the second slurry supply pump 132, the third slurry supply pump 133 and the fourth slurry supply pump 134, and if the wet desulfurization absorption tower limestone slurry supply system fails, for example, the first limestone slurry tank 100 and the second limestone slurry tank 110 lose the slurry source, the process water can be discharged into the process water discharge pipe 180 and supplied to the first limestone slurry tank 100 and the second limestone slurry tank 110 through the first slurry supply pump 131, the second slurry supply pump 132, the third slurry supply pump 133 and the fourth slurry supply pump 134.
Referring to fig. 1, further, limestone powder adding ports are respectively formed in the first limestone slurry tank 100 and the second limestone slurry tank 110, and limestone slurry with a qualified concentration can be prepared by adding process water and added limestone powder and then uniformly stirring. Compared with the limestone powder bin pulping system adopted in the prior art, the system cancels the limestone pulping system, so that the initial investment of the system can be reduced, and the operation and maintenance cost is reduced.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A limestone slurry supply system of a wet desulphurization absorption tower is characterized by comprising a first limestone slurry tank (100) and a second limestone slurry tank (110) which are internally provided with a stirrer (120), a first slurry supply pump (131), a second slurry supply pump (132), a third slurry supply pump (133), a fourth slurry supply pump (134), a first slurry supply main pipe (141), a second slurry supply main pipe (142), a first branch pipe (1411), a second branch pipe (1412), a third branch pipe (1421), a fourth branch pipe (1422), a first absorption tower and a second absorption tower, wherein one end of the first slurry supply main pipe (141) and one end of the second slurry supply main pipe (142) are respectively connected with the first limestone slurry tank (100), the other end of the first slurry supply main pipe (141) is respectively connected with the first absorption tower through the first branch pipe (1411), and the second branch pipe (1412) is connected with the second absorption tower, the other end of the second slurry supply main pipe (142) is respectively connected with the first absorption tower through the third branch pipe (1421), the fourth branch pipe (1422) is connected with the second absorption tower, the first slurry supply pump (131) is arranged on the first slurry supply main pipe (141), the second slurry supply pump (132) is arranged on the second slurry supply main pipe (142), the third slurry supply pump (133) is arranged on a first pipeline (181) which is connected with the second slurry supply main pipe (142), and the fourth slurry supply pump (134) is arranged on a second pipeline (182) which is connected with the second slurry supply main pipe (110) and the first slurry supply main pipe (141).
2. The wet desulfurization absorption tower limestone slurry supply system according to claim 1, wherein the first slurry supply pump (131), the second slurry supply pump (132), the third slurry supply pump (133), and the fourth slurry supply pump (134) are each configured as a variable frequency pump.
3. The limestone slurry supply system of the wet desulphurization absorption tower of claim 1, wherein the second branch pipe (1412) and the third branch pipe (1421) are provided with manual valves (150).
4. The limestone slurry supply system of the wet desulphurization absorption tower of claim 1, wherein an electric valve (190) is respectively arranged on the first branch pipe (1411), the fourth branch pipe (1422), the first pipeline (181) and the second pipeline (182).
5. The limestone slurry supply system of the wet desulphurization absorption tower of claim 1, wherein the first branch pipe (1411) and the fourth branch pipe (1422) are respectively provided with a flow meter (160).
6. The limestone slurry supply system of the wet desulphurization absorption tower of claim 1, wherein the first slurry supply main pipe (141) and the second slurry supply main pipe (142) are respectively provided with a pressure gauge (170).
7. The limestone slurry supply system of the wet desulfurization absorption tower of claim 1, further comprising a process water discharge pipe (180), wherein the process water discharge pipe (180) is connected with the first slurry supply pump (131), the second slurry supply pump (132), the third slurry supply pump (133) and the fourth slurry supply pump (134), respectively.
8. The limestone slurry supply system of the wet desulphurization absorption tower according to claim 1, wherein the first limestone slurry tank (100) and the second limestone slurry tank (110) are respectively provided with limestone powder adding ports.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021079591.3U CN213050057U (en) | 2020-06-11 | 2020-06-11 | Limestone slurry supply system of wet desulphurization absorption tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021079591.3U CN213050057U (en) | 2020-06-11 | 2020-06-11 | Limestone slurry supply system of wet desulphurization absorption tower |
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| CN213050057U true CN213050057U (en) | 2021-04-27 |
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| CN202021079591.3U Active CN213050057U (en) | 2020-06-11 | 2020-06-11 | Limestone slurry supply system of wet desulphurization absorption tower |
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