Regeneration treatment system for exchange resin of power plant

Abstract

The utility model belongs to the technical field of resin regeneration, and particularly discloses a power plant exchange resin regeneration treatment system which comprises a highly mixed resin storage tank and a separation tower which are communicated through a pipeline, an aeration assembly is arranged at the bottom end in the separation tower, a high-position outlet and a low-position outlet are respectively formed in one side of the separation tower, the high-position outlet is connected with a first regeneration tower through a pipeline, and the low-position outlet is connected with a second regeneration tower through a pipeline; the first regeneration tower is connected with a first detection tower, the second regeneration tower is connected with a second detection tower, and the first detection tower and the second detection tower are both used for separating unqualified resin. According to the utility model, highly mixed resin is divided into anion resin and cation resin through the separation tower, the anion resin and the cation resin are respectively regenerated, and in order to ensure that the regenerated resin can meet the ion exchange requirement, the regenerated resin is respectively detected through the detection tower and unqualified resin is separated out; the softening capability of the resin on the boiler water of the power plant is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to resin regeneration technical field, especially relate to power plant exchange resin regeneration treatment system. BACKGROUND

[0002] The boiler of power plant is extremely high to water quality requirement, because calcium, magnesium and other cations in water can form scale in the boiler, therefore, need to control the dosing and water quality of the boiler strictly. In the prior art, calcium and magnesium ions in water are removed by ion exchange resin, which can effectively soften water. When the resin is saturated, the exchange capacity is lost, and the regeneration system is needed to restore its softening water capacity to continuously provide qualified soft water for the boiler and ensure the safe and efficient operation of the boiler.

[0003] The Chinese patent with publication number CN211644853U discloses a coal-fired power plant condensate polishing system regeneration wastewater zero discharge system, which uses sulfuric acid regeneration and avoids the discharge of acidic and alkaline wastewater by neutralizing and reusing the regeneration wastewater. However, in this scheme, after the anion resin and cation resin are regenerated once, it cannot guarantee that the exchange performance of all resins meets the requirements. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects in the prior art and provides a power plant exchange resin regeneration treatment system.

[0005] The utility model provides a power plant exchange resin regeneration treatment system, which comprises a high-mix resin storage tank and a separation tower connected by a pipeline.

[0006] An aeration assembly is arranged at the bottom of the separation tower, and a high-level outlet and a low-level outlet are respectively arranged on one side of the separation tower. The high-level outlet is connected with a first regeneration tower through a pipeline for treating anion resin. The low-level outlet is connected with a second regeneration tower through a pipeline for treating cation resin.

[0007] An acid liquid storage tank is connected with the top of the first regeneration tower through a pipeline, and a first metering pump is arranged between the first regeneration tower and the acid liquid storage tank. An alkali liquid storage tank is connected with the top of the second regeneration tower through a pipeline, and a second metering pump is arranged between the second regeneration tower and the alkali liquid storage tank.

[0008] The outlet end of the first regeneration tower is connected with a first detection tower through a pipeline, and the outlet end of the second regeneration tower is connected with a second detection tower through a pipeline. The first detection tower and the second detection tower are used for separating unqualified resins.

[0009] The first detection tower is also connected with a first storage device through a pipeline, for storing the regenerated anion resin, and the second detection tower is also connected with a second storage device through a pipeline, for storing the regenerated cation resin.

[0010] Further, the aeration assembly comprises a first fan and a plurality of aerators connected through pipelines, the aerators are arranged inside the separation tower, the first fan is located outside the separation tower, and the air outlet end of the first fan is connected with the aerators through a pipeline.

[0011] Further, a sedimentation tank is arranged between the high-mix resin storage tank and the separation tower, one side of the sedimentation tank is provided with a sedimentation inlet, the other side of the sedimentation tank is provided with a sedimentation outlet, the sedimentation outlet is connected with the separation tower through a peristaltic pump, for conveying the sedimented high-mix resin to the inside of the separation tower, and a blowdown port is further arranged at the bottom of the sedimentation tank.

[0012] Further, the first detection tower and the second detection tower are identical in structure, for containing acidic solution or alkaline solution, the bottom of each of the first detection tower and the second detection tower is a conical structure provided with a liquid outlet, the liquid outlet is connected with a collection tank through a pipeline, for collecting unqualified resin, a plug-in pipe is arranged in each of the first detection tower and the second detection tower, for plugging or opening the liquid outlet, overflow ports are formed in the side walls of the first detection tower and the second detection tower, and the two overflow ports are respectively connected with the first storage device and the second storage device through electromagnetic valves.

[0013] An air inlet is formed at one side of the liquid outlet, and the air inlet is connected with a fan through a pipeline.

[0014] Further, a first water washing tower is arranged between the first detection tower and the first storage device, and a second water washing tower is arranged between the second detection tower and the second storage device.

[0015] The first water washing tower and the second water washing tower are identical in structure, and each comprises a support and a tower body arranged on the support, one side of the top of the tower body is provided with a water inlet, the center of the bottom of the tower body is provided with a discharge port, the center of the top of the tower body is provided with a stirring motor, the tower body is provided with a stirring rod, and the stirring rod is connected with the stirring motor in a shafting manner; and the two discharge ports are respectively connected with the first storage device and the second storage device.

[0016] Further, the first storage device and the second storage device are identical in structure, a draining plate is arranged in each of the first storage device and the second storage device, and a drain port is formed at the bottom of each of the first storage device and the second storage device.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] (1) The utility model discloses a separation tower is divided into anion resin and cation resin to high mixed resin, and carries out the regeneration operation to anion resin and cation resin respectively, improves resin regeneration efficiency, in order to guarantee that the resin after regeneration can satisfy ion exchange demand, carries out detection to the resin after regeneration and separates the unqualified resin through detection tower respectively, guarantees the softening ability of resin to power plant boiler water, reduces the production of boiler scale.

[0019] (2) The utility model discloses being provided with the sedimentation tank between high mixed resin storage tank and separation tower, because the settlement speed of particle impurity and resin is different in liquid, after containing resin and impurity liquid enters the settlement pool, under the state of static or slow flow, the relatively heavy particle impurity can gradually settle to the pool bottom, and the resin can flow out through the upper layer export, prevent the particle impurity from entering the separation tower and the regeneration tower and influence the regeneration effect.

[0020] (3) The utility model discloses being further provided with the water washing tower between detection tower and storage device, can be used for repeatedly washing the collected qualified resin, removes the surface residual floatation solution, and further improves the resin regeneration effect. DRAWINGS

[0021] The following drawings only make the illustrative explanation of the utility model and do not use for limiting the scope of the utility model, wherein:

[0022] Figure 1 The utility model connection structure schematic drawing is shown;

[0023] Figure 2 The utility model one embodiment connection structure schematic drawing is shown;

[0024] Figure 3 The utility model another embodiment connection structure schematic drawing is shown;

[0025] In the figure: 1, high mixed resin storage tank; 2, sedimentation tank; 3, sedimentation inlet; 4, sedimentation outlet; 5, sewage outlet; 6, separation tower; 7, high-level outlet; 8, low-level outlet; 9, aerator; 10, first fan; 11, first regeneration tower; 12, second regeneration tower; 13, acid liquid storage tank; 14, first metering pump; 15, lye storage tank; 16, second metering pump; 17, first detection tower; 18, first plug pipe; 19, first air inlet; 20, second fan; 21, second detection tower; 22, second plug pipe; 23, second air inlet; 24, third fan; 25, first liquid outlet; 26, first electromagnetic valve; 27, first overflow; 28, first collection tank; 29, second liquid outlet; 30, second electromagnetic valve; 31, second overflow; 32, second collection tank; 33, first water washing tower; 34, second water washing tower; 35, stirring motor; 36, stirring rod; 37, first water inlet; 38, first discharge port; 39, first storage device; 40, first draining plate; 41, first water outlet; 42, second water inlet; 43, second discharge port; 44, second storage device; 45, second draining plate; 46, second water outlet. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme, design method and advantages of the utility model more clear and obvious, the utility model is further described in detail by specific embodiments combined with the drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0027] Example 1

[0028] As Figure 1The embodiment shown provides a power plant exchange resin regeneration treatment system, which comprises a high-mix resin storage tank 1 and a separation tower 6 connected by a pipeline; an aeration assembly is arranged at the bottom end of the separation tower 6, and a high-level outlet 7 and a low-level outlet 8 are respectively arranged on one side of the separation tower 6, the high-level outlet 7 is connected with a first regeneration tower 11 through a pipeline for treating anion resin, and the low-level outlet 8 is connected with a second regeneration tower 12 through a pipeline for treating cation resin; the wettability of the surface of the anion resin and the cation resin is different in a sodium chloride solution, gas is introduced into the separation tower 6 through the aeration assembly to form bubbles, so that one kind of resin is attached to the bubbles and floats up to realize separation. Specifically, because the surface of the anion resin is positively charged, the bubbles are usually negatively charged or electrically neutral in the sodium chloride solution, the anion resin is easy to be adsorbed on the bubbles and float to the surface of the solution with the bubbles, and the surface of the cation resin is negatively charged and not easy to be adsorbed on the bubbles, so the cation resin will sink to the bottom of the solution due to its own greater density than water in the absence of the buoyancy of the bubbles. Therefore, the anion resin flows into the first regeneration tower 11 from the high-level outlet 7, and the cation resin flows into the second regeneration tower 12 from the low-level outlet 8. An acid liquid storage tank 13 is connected to the top of the first regeneration tower 11 through a pipeline, and a first metering pump 14 is further arranged between the first regeneration tower 11 and the acid liquid storage tank 13, the top of the second regeneration tower 12 is connected with an alkali liquid storage tank 15 through a pipeline, and a second metering pump 16 is further arranged between the second regeneration tower 12 and the alkali liquid storage tank 15, which can be used for accurately controlling the acid liquid entering the first regeneration tower 11 and the alkali liquid entering the second regeneration tower 12 to ensure the regeneration effect. In order to separate the unqualified resin, a first detection tower 17 is connected to the outlet end of the first regeneration tower 11 through a pipeline, and a second detection tower 21 is connected to the outlet end of the second regeneration tower 12 through a pipeline, the first detection tower 17 and the second detection tower 21 are both used for separating unqualified resin; the first detection tower 17 is further connected with a first storage device 39 for storing the regenerated anion resin, and the second detection tower is further connected with a second storage device 44 for storing the regenerated cation resin. The aeration assembly comprises a first fan 10 and a plurality of aerators 9 connected by a pipeline, the aerators 9 are arranged in the separation tower 6, and the first fan 10 is located outside the separation tower 6, and the gas outlet end of the first fan 10 is connected with the aerators 9 through a pipeline.

[0029] In the above, the first detection tower 17 and the second detection tower 21 are the same structure, used to contain acidic solution or alkaline solution, the bottom of the first detection tower 17 and the second detection tower 21 is a tapered structure with a drain, the drain is connected with a collection tank through pipeline, used to collect unqualified resin, the first detection tower 17 and the second detection tower 21 are provided with plug-in pipes inside, used to block or open the drain, the side wall of the first detection tower 17 and the second detection tower 21 is provided with overflow, the two overflow are respectively communicated with the first storage device 39 and the second storage device 44 through electromagnetic valve; the side of the drain is provided with air inlet, the air inlet is connected with a fan through pipeline. Specifically, in order to distinguish, the structure of the first detection tower 17 and the second detection tower 21 is described respectively: the first detection tower 17 contains alkaline solution inside, and the bottom of the first detection tower 17 is a tapered structure with a first drain 25, the first drain 25 is connected with a first collection tank 28 through pipeline, used to collect unqualified anion resin; the first detection tower 17 is provided with a first plug-in pipe 18 inside, used to block or open the first drain 25, the side wall of the first detection tower 17 is provided with a first overflow 27, the first overflow 27 is communicated with the first storage device 39 through pipeline, and a first electromagnetic valve 26 is further arranged between the first overflow 27 and the first storage device 39; the side of the first drain 25 is provided with a first air inlet 19, the first air inlet 19 is connected with a second fan 20 through pipeline;

[0030] The second detection tower 21 contains acidic solution inside, and the bottom of the second detection tower 21 is a tapered structure with a second drain 29, the second drain 29 is connected with a second collection tank 32 through pipeline, used to collect unqualified cation resin; the second detection tower 21 is provided with a second plug-in pipe 22 inside, used to block or open the second drain 29, the side wall of the second detection tower 21 is provided with a second overflow 31, the second overflow 31 is communicated with the second storage device 44 through pipeline, and a second electromagnetic valve 30 is further arranged between the second overflow 31 and the second storage device 44; the side of the second drain 29 is provided with a second air inlet 23, the second air inlet 23 is connected with a third fan 24 through pipeline.

[0031] Because qualified anion exchange resins have a positively charged surface, in the flotation solution, by adding appropriate flotation reagents or introducing gas to form bubbles, the anion exchange resins can adhere to the bubbles and float to the solution surface due to buoyancy. Unqualified anion exchange resins cannot effectively adhere to the bubbles, thus achieving separation. Qualified anion exchange resins flow out from the first overflow port 27, while unqualified anion exchange resins flow out from the first drain port 25 by pulling out the first insertion / extraction tube 18. Qualified cation exchange resins have a negatively charged surface. When gas is introduced into a suitable flotation solution to generate bubbles, the cation exchange resins can adhere to the bubbles, while unqualified cation exchange resins have altered surface properties and are difficult to adhere to the bubbles, thus achieving separation. Qualified cation exchange resins flow out from the second overflow port 31, while unqualified cation exchange resins flow out from the second drain port 29 by pulling out the second insertion / extraction tube 22. In this embodiment, the flotation reagent used to detect anion exchange resins is a sodium chloride solution, and the flotation reagent used to detect cation exchange resins is a sodium acetate solution.

[0032] Example 2

[0033] like Figure 2 As shown, in order to prevent particulate impurities in the high-mixed resin from entering the subsequent regeneration process, in this embodiment, a sedimentation tank 2 is also provided between the high-mixed resin storage tank 1 and the separation tower 6. A sedimentation inlet 3 is provided on one side of the sedimentation tank 2, and a sedimentation outlet 4 is provided on the other side of the sedimentation tank 2. The sedimentation outlet 4 is connected to the separation tower 6 through a peristaltic pump and is used to transport the sedimented high-mixed resin into the separation tower 6. A drain outlet 5 is also provided at the bottom of the sedimentation tank 2.

[0034] Example 3

[0035] like Figure 3 As shown, based on Embodiments 1 and 2, in order to further ensure the regeneration effect of the resin, a first water washing tower 33 is also provided between the first detection tower 17 and the first storage device 39, and a second water washing tower 34 is also provided between the second detection tower 21 and the second storage device 44; the first water washing tower 33 and the second water washing tower 34 have the same structure, both including a support and a tower body set on the support; for the first water washing tower 33, a first water inlet 37 is provided on one side of the top of the tower body, a first discharge port 38 is provided at the center of the bottom of the tower body, a stirring motor 35 is provided at the center of the top of the tower body, a stirring rod 36 is provided inside the tower body, the stirring rod 36 is axially connected to the stirring motor 35, and the first discharge port 38 is connected to the first storage device 39.

[0036] For the second water washing tower 34, a second water inlet 42 is arranged at one side of the top of the tower body, a second discharge outlet 43 is arranged at the center of the bottom of the tower body, a stirring motor 35 is arranged at the center of the top of the tower body, a stirring rod 36 is arranged in the tower body, the stirring rod 36 is connected with the stirring motor 35 in a shaft manner, and the second discharge outlet 43 is communicated with the first storage device 39.

[0037] In the above, the first storage device 39 and the second storage device 44 are of the same structure, the first storage device 39 is internally provided with a first draining plate 40, and a first water outlet 41 is arranged at the bottom of the first storage device 39; the second storage device 44 is internally provided with a second draining plate 45, and a second water outlet 46 is arranged at the bottom of the second storage device 44. After water washing, the resin-water is used as a transport carrier under the action of gravity, the resin is pushed from the water washing tower to the storage device, and the water is filtered through the draining plate, so that the qualified regenerated resin can be obtained.

[0038] The above has described the embodiments of the present application, the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical application or improvement of the technology in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. A power plant ion exchange resin regeneration process system, characterized by, It comprises a high-mix resin storage tank (1) and a separation tower (6) connected by pipelines; An aeration assembly is arranged at the bottom end of the separation tower (6), and a high-level outlet (7) and a low-level outlet (8) are respectively arranged on one side of the separation tower (6), the high-level outlet (7) is connected with a first regeneration tower (11) through a pipeline, and is used for processing anion resin, and the low-level outlet (8) is connected with a second regeneration tower (12) through a pipeline, and is used for processing cation resin; An acid liquid storage tank (13) is connected with the top of the first regeneration tower (11) through a pipeline, and a first metering pump (14) is further arranged between the first regeneration tower (11) and the acid liquid storage tank (13), and an alkali liquid storage tank (15) is connected with the top of the second regeneration tower (12) through a pipeline, and a second metering pump (16) is further arranged between the second regeneration tower (12) and the alkali liquid storage tank (15); The outlet end of the first regeneration tower (11) is connected with a first detection tower (17) through a pipeline, and the outlet end of the second regeneration tower (12) is connected with a second detection tower (21) through a pipeline, and the first detection tower (17) and the second detection tower (21) are both used for separating unqualified resin; The first detection tower (17) is further connected with a first storage device (39) through a pipeline, and is used for storing regenerated anion resin, and the second detection tower is further connected with a second storage device (44) through a pipeline, and is used for storing regenerated cation resin.

2. The power plant ion exchange resin regeneration process system of claim 1, wherein, The aeration assembly comprises a first fan (10) and a plurality of aerators (9) connected by pipelines, the aerators (9) are arranged in the separation tower (6), the first fan (10) is located outside the separation tower (6), and the air outlet end of the first fan (10) is connected with the aerators (9) through a pipeline.

3. The power plant ion exchange resin regeneration process system of claim 1, wherein, A sedimentation tank (2) is arranged between the high-mix resin storage tank (1) and the separation tower (6), one side of the sedimentation tank (2) is provided with a sedimentation inlet (3), the other side of the sedimentation tank (2) is provided with a sedimentation outlet (4), the sedimentation outlet (4) is connected with the separation tower (6) through a peristaltic pump, and is used for conveying the precipitated high-mix resin into the separation tower (6); a sewage outlet (5) is further arranged at the bottom of the sedimentation tank (2).

4. The power plant ion exchange resin regeneration process system of claim 1, wherein, The first detection tower (17) and the second detection tower (21) are the same structure, and are used for containing acidic solution or alkaline solution, the bottom of the first detection tower (17) and the second detection tower (21) is a conical structure provided with a liquid outlet, the liquid outlet is connected with a collection tank through a pipeline, and is used for collecting unqualified resin, plug-in pipes are arranged in the first detection tower (17) and the second detection tower (21), and are used for plugging or opening the liquid outlet, overflow ports are arranged on the side walls of the first detection tower (17) and the second detection tower (21), and the two overflow ports are respectively connected with the first storage device (39) and the second storage device (44) through electromagnetic valves; An air inlet is arranged on one side of the liquid outlet, and the air inlet is connected with a fan through a pipeline.

5. The power plant ion exchange resin regeneration process system of claim 4, wherein, The first detection tower (17) and the first storage device (39) are further provided with a first water washing tower (33), and the second detection tower (21) and the second storage device (44) are further provided with a second water washing tower (34); The first water washing tower (33) and the second water washing tower (34) are the same in structure and each include a support and a tower body provided on the support, one side of the top of the tower body is provided with a water inlet, the center of the bottom of the tower body is provided with a discharge port, the center of the top of the tower body is provided with a stirring motor (35), the inside of the tower body is provided with a stirring rod (36), the stirring rod (36) is connected with the stirring motor (35) in an axial manner, and the two discharge ports are respectively communicated with the first storage device (39) and the second storage device (44).

6. The power plant ion exchange resin regeneration process system of claim 5, wherein, The first storage device (39) and the second storage device (44) are the same in structure, a draining plate is arranged in the first storage device (39) and the second storage device (44) respectively, and a drain port is formed in the bottom of the first storage device (39) and the second storage device (44).

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