CN219259647U - Condensate polishing operation system of thermal power plant - Google Patents
Condensate polishing operation system of thermal power plant Download PDFInfo
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- CN219259647U CN219259647U CN202222808674.7U CN202222808674U CN219259647U CN 219259647 U CN219259647 U CN 219259647U CN 202222808674 U CN202222808674 U CN 202222808674U CN 219259647 U CN219259647 U CN 219259647U
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Abstract
The utility model relates to the technical field of water treatment, and particularly discloses a condensate polishing operation system of a thermal power plant, which comprises a water inlet pipeline and a water outlet pipeline communicated with the water inlet pipeline, wherein the water inlet pipeline is connected with a first positive bed and a second positive bed in parallel, the water outlet pipeline is connected with a first negative bed and a second negative bed in parallel, the upper parts of the first positive bed and the second positive bed are communicated with a first fat inlet pipe, the bottoms of the first positive bed and the second positive bed are communicated with a first fat outlet pipe, the upper parts of the first negative bed and the second negative bed are communicated with a second fat inlet pipe, and the bottoms of the first negative bed and the second negative bed are communicated with a second fat outlet pipe; the device also comprises a bypass pipeline for flushing the water inlet pipeline and the water outlet pipeline, so that the problem that sodium ions and sulfate ions can be temporarily generated in the water outlet pipe to influence the steam-water quality of a subsequent unit when the traditional one male bed or one female bed fails and needs to be transferred and transported for standby is solved.
Description
Technical Field
The application relates to the technical field of water treatment, and particularly discloses a condensate polishing operation system of a thermal power plant.
Background
Along with the development of production and the progress of scientific technology, thermal generator sets have developed to high parameters and large capacity. Meanwhile, the contradiction between the development of thermal power generating units and the lack of water resources is increasingly prominent, and the direct air cooling units are increasingly favored by all power generation enterprises in northern areas by virtue of the excellent water saving performance. The condensate water of the direct air cooling unit has the outstanding characteristics of low and stable salt content, high temperature, high dissolved oxygen content, high carbon dioxide content, more corrosion products, high iron content and the like, so that the condensate water fine treatment system of the direct air cooling unit is regulated in power plant chemical design Specification (DL/T5068-2014) and is suitable for selecting a yin-yang split bed process.
When a positive bed or a negative bed fails in the current condensate fine treatment positive-negative separation bed system and needs to be transferred and transported for standby, the failed positive bed or negative bed still operates for a period of time, sodium ions, sulfate ions and chloride ions cannot be completely removed in the operation time of the failed positive bed or negative bed, so that the sodium ions, sulfate ions and chloride ions in a water outlet pipe are temporarily raised, and the standby positive bed or negative bed gradually returns to the abnormal phenomenon in the standard value after the standby positive bed or negative bed is formally put into operation. Such abnormal phenomenon appears periodically, and the steam-water quality of the whole unit can be further influenced, so that the quality qualification rate of the steam-water of the unit is reduced, and the safe and economic operation of the unit is seriously influenced. Accordingly, the inventor has provided a condensate polishing operation system of a thermal power plant so as to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims to solve the problem that sodium ions and sulfate ions can be temporarily generated in a water outlet pipe to influence the quality of steam and water of a subsequent unit when a traditional male bed or a traditional female bed fails and needs to be transferred and transported.
In order to achieve the above purpose, the basic scheme of the utility model provides a condensate polishing operation system of a thermal power plant, which comprises a water inlet pipeline, a water outlet pipeline communicated with the water inlet pipeline and a bypass pipeline for flushing the water inlet pipeline and the water outlet pipeline, wherein the water inlet pipeline is connected with a first positive bed and a second positive bed in parallel, the water outlet pipeline is connected with a first negative bed and a second negative bed in parallel, the upper parts of the first positive bed and the second positive bed are communicated with a first fat inlet pipe, the bottoms of the first positive bed and the second positive bed are communicated with a first fat outlet pipe, the upper parts of the first negative bed and the second negative bed are communicated with a second fat inlet pipe, and the bottoms of the first negative bed and the second negative bed are communicated with a second fat outlet pipe.
The principle and effect of this basic scheme lie in:
1. compared with the prior art, the first fat inlet pipe, the first fat outlet pipe, the second fat inlet pipe and the second fat outlet pipe are respectively and correspondingly arranged on the first positive bed, the second positive bed, the first negative bed and the second negative bed, so that the positive bed system and the negative bed system can circularly inlet fat and outlet fat, when one positive bed or one negative bed fails in the positive-negative separation bed system for condensate polishing, resin remained in the failed positive bed or negative bed is sent out during standby transfer, and the phenomenon that the resin cannot be returned to cause cross pollution in the positive bed or the negative bed, so that regenerated liquid (sulfate ions) and salt solution (containing sodium ions) of the resin are polluted, and the salt solution (containing the sodium ions) leaks from the positive bed or the negative bed and finally enters a subsequent unit through sodium ions and sulfate ions in a water outlet pipe, thereby influencing the quality of steam-water of the subsequent unit is avoided.
2. Compared with the prior art, the utility model is provided with the water inlet pipeline, the water outlet pipeline and the bypass pipeline, the bypass pipeline comprises the water flushing pipeline and the air flushing pipeline, the water inlet pipeline and the water outlet pipeline are flushed through water flushing and air flushing, residual sodium ions and sulfate ions in the water inlet pipeline and the water outlet pipeline are flushed, and finally the residual sodium ions and sulfate ions are discharged from the water outlet pipeline, so that the effect of flushing and removing the tiny ions in the water outlet pipeline when the standby cation bed or the standby anion bed is transferred and transported is achieved, and the influence on the operation of a subsequent unit is avoided.
Further, the first positive bed and the second positive bed are both connected with a first water inlet pipe, the first water outlet pipe is connected with the lower part of the first positive bed and the second positive bed, the first negative bed and the second negative bed are both connected with a second water inlet pipe, and the lower part of the first negative bed and the second negative bed are both connected with a second water outlet pipe.
Further, the bypass line includes a water flush line and a gas flush line.
Further, the water flushing pipeline comprises a main water pipe, a first water pipe and a second water pipe, wherein the first water pipe and the second water pipe are communicated with the main water pipe, the free end of the first water pipe is communicated with a first water outlet pipe, and the free end of the second water pipe is communicated with a second water outlet pipe.
Further, the gas flushing pipeline comprises a main gas pipe, a first gas pipe and a second gas pipe, wherein the first gas pipe and the second gas pipe are communicated with the main gas pipe, the free end of the first gas pipe is communicated with a first water pipe, and the free end of the second gas pipe is communicated with a second water pipe.
Further, the water inlet pipeline is communicated with a cation bed bypass pipe, and the free end of the cation bed bypass pipe is communicated with a first expenditure water pipe.
Further, the water outlet pipeline is communicated with a negative bed bypass pipe, and the free end of the negative bed bypass pipe is communicated with a second expenditure water pipe.
Further, the positive bed bypass pipe and the negative bed bypass pipe are respectively provided with a water pump. The water pump plays a role in driving water to flow.
Further, the first water pipe and the second water pipe are respectively provided with a first valve, and the first air pipe and the second air pipe are respectively provided with a second valve. The first valve controls the pipeline operation of the first water pipe or the second water pipe, and the second valve controls the on-off airflow of the first air pipe or the second air pipe.
Further, the first fat inlet pipe, the first fat outlet pipe, the second fat inlet pipe and the first fat outlet pipe are all provided with third valves.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic diagram of pipeline connection of a condensate polishing operation system of a thermal power plant according to an embodiment of the present application.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
Reference numerals in the drawings of the specification include: the water inlet pipeline 1, the water outlet pipeline 2, the first positive bed 3, the second positive bed 4, the first negative bed 5, the second negative bed 6, the first fat inlet pipe 7, the first fat outlet pipe 8, the second fat inlet pipe 9, the second fat outlet pipe 10, the first branch water inlet pipe 11, the first branch water outlet pipe 12, the second branch water inlet pipe 13, the second branch water outlet pipe 14, the main water pipe 15, the first water pipe 16, the second water pipe 17, the main air pipe 18, the first air pipe 19, the second air pipe 20, the positive bed bypass pipe 21, the negative bed bypass pipe 22, the first valve 23, the second valve 24 and the third valve 25.
A condensate polishing operation system of a thermal power plant, an embodiment of which is shown in fig. 1: the device comprises a water inlet pipeline 1, a water outlet pipeline 2 communicated with the water inlet pipeline 1 and a bypass pipeline for flushing the water inlet pipeline 1 and the water outlet pipeline 2, wherein the water inlet pipeline 1 is connected with a first positive bed 3 and a second positive bed 4 in parallel, a first negative bed 5 and a second negative bed 6 are connected on the water outlet pipeline 2 in parallel, a first lipid inlet pipe 7 is communicated with the upper parts of the first positive bed 3 and the second positive bed 4, a first lipid outlet pipe 8 is communicated with the bottom parts of the first positive bed 3 and the second positive bed 4, a second lipid inlet pipe 9 is communicated with the upper parts of the first negative bed 5 and the second negative bed 6, a second lipid outlet pipe 10 is communicated with the bottom parts of the first negative bed 5 and the second negative bed 6, a third valve 25 is arranged on the first lipid inlet pipe 7, the first lipid outlet pipe 8, the second lipid inlet pipe 9 and the first lipid outlet pipe 8, and electric valves are arranged on the first water inlet pipe 11 and the second water inlet pipe 13.
The first positive bed 3 and the second positive bed 4 top all are connected with first branch inlet tube 11, and the quantity of first branch inlet tube 11 is two and all connects on inlet tube 1, and first positive bed 3 and second positive bed 4 below all are connected with first water pipe 12 that spends, and the quantity of first water pipe 12 that spends is two and all connects on inlet tube 1, and first positive bed 3 and second positive bed 4 are located respectively between first branch inlet tube 11 and the first water pipe 12 that spends. The first negative bed 5 and the second negative bed 6 top all are connected with the second branch inlet tube 13, and the quantity of second branch inlet tube 13 is two and all is connected on outlet pipe way 2, and first negative bed 5 and second negative bed 6 below all are connected with second expenditure water pipe 14, and the quantity of second expenditure water pipe 14 is two and all is connected on outlet pipe way 2, and first negative bed 5 and second negative bed 6 are located respectively between second branch inlet tube 13 and the second expenditure water pipe 14.
The bypass line includes a water flush line and a gas flush line. The water flushing pipeline comprises a main water pipe 15, a first water pipe 16 and a second water pipe 17 which are communicated with the main water pipe 15, the number of the first water pipe 16 and the number of the second water pipe 17 are two, the upper end of the first water pipe 16 is communicated with a first water outlet pipe, and the upper end of the second water pipe 17 is communicated with a second water outlet pipe 14. The gas flushing pipeline comprises a main gas pipe 18, and a first gas pipe 19 and a second gas pipe 20 which are communicated with the main gas pipe 18, wherein the number of the first gas pipe 19 and the number of the second gas pipe 20 are two, the lower end of the first gas pipe 19 is communicated with the first water pipe 16, and the lower end of the second gas pipe 20 is communicated with the second water pipe 17. The first water pipe 16 and the second water pipe 17 are respectively provided with a first valve 23, and the first air pipe 19 and the second air pipe 20 are respectively provided with a second valve 24.
The water inlet pipeline 1 is communicated with a cation bed bypass pipe 21, and the tail ends of the cation bed bypass pipe 21 are respectively communicated with a first water outlet pipe 12. The water outlet pipeline 2 is communicated with a negative bed bypass pipe 22, the tail end of the negative bed bypass pipe 22 is communicated with a second water outlet pipe 14, and water pumps are arranged on the positive bed bypass pipe 21 and the negative bed bypass pipe 22.
In the implementation process, in the normal operation process of the unit, the first positive bed 3 and the second positive bed 4, the first negative bed 5 and the second negative bed 6 operate simultaneously, if one of the positive beds or one of the negative beds fails, the failed resin is sent out by opening a valve switch, the sent resin is put into a storage tank, and then the resin of the storage tank is poured into the positive bed and the negative bed which normally operate for use; when the pressure difference between the water inlet pipeline 1 and the water outlet pipeline 2 exceeds 0.35Mpa or when the temperature of the inlet water of the female bed exceeds 70 ℃, the electric valves on the first water inlet pipe 11 and the second water inlet pipe 13 are automatically opened.
When one male bed or one female bed fails and needs to be put into operation for standby, the first valve 23 is opened, the main water pipe 15 of the second valve 24 is closed to pass flushing water, the flushing water enters the first expenditure water pipe 12 through the first water pipe 16, the flushing water in the first expenditure water pipe 12 enters the water inlet pipeline 1, the flushing water enters the second expenditure water pipe 14 through the second water pipe 17, the flushing water in the second expenditure water pipe 14 enters the water outlet pipeline 2, and finally the flushing water in the water inlet pipeline 1 enters the water outlet pipeline 2 and finally is discharged from the water outlet pipeline 2. Closing the first valve 23, opening the second valve 24, ventilating the main air pipe 18, enabling the compressed air of the first air pipe 19 to enter the first water pipe 16, and enabling the compressed air to enter the first expenditure water pipe 12 through the first water pipe 16 and finally enter the water inlet pipeline 1; compressed air of the first air pipe 19 enters the second water pipe 17, then enters the second water pipe 17 into the second water outlet pipe 14 and finally enters the water outlet pipeline 2, and finally the compressed air is discharged from the water outlet pipeline 2, so that condensed water solution containing sodium ions and sulfate ions in the water inlet pipeline 1 and the water outlet pipeline 2 is discharged.
After the tiny ions in the water outlet pipeline 2 are washed and removed, formal operation can be started, after fine treatment operation, the conductivity of the outlet of the positive bed needs to be closely monitored, when the conductivity rises to 1 mu S/cm or the hydrogen conductivity of furnace water rises to 1.2 mu S/cm, a negative bed bypass only operates the positive bed, and the condensation water fine treatment positive bed realizes ammoniation operation. (in the implementation process, the regeneration degree of the anion resin and the cation resin is ensured, wherein the content of sodium ion resin after the regeneration of the cation resin is less than 0.08 percent, and the content of chloride ion resin after the regeneration of the anion resin is less than 1 percent).
Compared with the prior art, the utility model is provided with the water inlet pipeline 1, the water outlet pipeline 2 and the bypass pipeline, the bypass pipeline comprises a water flushing pipeline and a gas flushing pipeline, the water inlet pipeline 1 and the water outlet pipeline 2 are flushed through water flushing and gas flushing, residual sodium ions and sulfate ions in the water inlet pipeline 1 and the water outlet pipeline 2 are flushed, and finally the sodium ions and the sulfate ions are discharged from the water outlet pipeline 2; meanwhile, when one positive bed or one negative bed is invalid in the system, resin remained in the invalid positive bed or negative bed is sent out when the standby is transferred, so that cross contamination of the resin in the positive bed or the negative bed caused by incapability of returning the resin is avoided, and the problem that sodium ions and sulfate ions are temporarily generated in a water outlet pipe when the standby is transferred when the traditional positive bed or the negative bed is invalid and the quality of steam and water of a subsequent unit is influenced is solved.
The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (10)
1. The utility model provides a thermal power plant's condensate polishing operation system which characterized in that: including water inlet pipeline, the outlet pipeline that is linked together with water inlet pipeline and the bypass pipeline that washes water inlet pipeline, outlet pipeline, water inlet pipeline connects in parallel has first positive bed and second positive bed, it has first negative bed and second negative bed to connect in parallel on the outlet pipeline, the top of first positive bed and second positive bed all communicates there is first fat pipe that advances, the bottom of first positive bed and second positive bed all communicates there is first fat pipe, the first negative bed all communicates there is the second fat pipe with second negative bed top, the first negative bed all communicates there is the second fat pipe with second negative bed bottom.
2. The condensate polishing operation system of a thermal power plant according to claim 1, wherein the first water inlet pipe is connected to the first positive bed and the second water inlet pipe is connected to the second positive bed, the first water outlet pipe is connected to the first positive bed and the second water outlet pipe is connected to the second negative bed, and the second water outlet pipe is connected to the first negative bed and the second negative bed.
3. A condensate polishing operation system in a thermal power plant according to claim 2, wherein the bypass conduit comprises a water flush conduit and a gas flush conduit.
4. A condensate polishing operation system in a thermal power plant according to claim 3, wherein the water flushing pipeline comprises a main water pipe, a first water pipe and a second water pipe which are communicated with the main water pipe, the free end of the first water pipe is communicated with a first water outlet pipe, and the free end of the second water pipe is communicated with a second water outlet pipe.
5. The condensate polishing operation system of a thermal power plant according to claim 4, wherein the gas flushing pipeline comprises a main gas pipe and a first gas pipe and a second gas pipe which are communicated with the main gas pipe, the free end of the first gas pipe is communicated with a first water pipe, and the free end of the second gas pipe is communicated with a second water pipe.
6. The condensate polishing operation system of a thermal power plant according to claim 1, wherein the water inlet pipeline is communicated with a cation bed bypass pipe, and the free end of the cation bed bypass pipe is communicated with a first outlet water pipe.
7. The condensate polishing operation system of a thermal power plant according to claim 6, wherein the water outlet pipeline is communicated with a cathode bypass pipe, and the free end of the cathode bypass pipe is communicated with a second outlet water pipe.
8. The condensate polishing operation system of a thermal power plant according to claim 7, wherein the male bed bypass pipe and the female bed bypass pipe are provided with water pumps.
9. The system of claim 5, wherein the first water pipe and the second water pipe are respectively provided with a first valve, and the first air pipe and the second air pipe are respectively provided with a second valve.
10. The condensate polishing operation system of claim 1, wherein the first fat inlet pipe, the first fat outlet pipe, the second fat inlet pipe and the first fat outlet pipe are respectively provided with a third valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222808674.7U CN219259647U (en) | 2022-10-24 | 2022-10-24 | Condensate polishing operation system of thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222808674.7U CN219259647U (en) | 2022-10-24 | 2022-10-24 | Condensate polishing operation system of thermal power plant |
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| CN219259647U true CN219259647U (en) | 2023-06-27 |
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| CN202222808674.7U Active CN219259647U (en) | 2022-10-24 | 2022-10-24 | Condensate polishing operation system of thermal power plant |
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