Ion exchange system capable of being rotatably cleaned

Abstract

The utility model relates to an ion exchange system capable of being rotatably cleaned. The ion exchange system comprises an ion exchanger, a flushing water tank and a cleaning water tank. The speed reducer is arranged at the top of the ion exchanger, and the stirrer is arranged in the speed reducer, so that after resin adsorption is saturated, low-concentration hydrochloric acid is adopted to highly clean the ion exchanger, and the low-concentration hydrochloric acid enters the ion exchanger from the flushing water tank through the water outlet to flush the ion exchanger from bottom to top; in the cleaning process, a speed reducer at the top of the ion exchanger is started, a stirrer in the ion exchanger is pushed to rapidly rotate, the resin and the cleaning liquid are fully mixed, and after cleaning is finished, the resin and the cleaning liquid enter the cleaning water tank through a backwashing water outlet in the top of the ion exchanger, so that the purpose of circulating flushing is achieved. Cleaning liquid in the resin is cleaned with clear water, the stirrer is kept in an on state until clear water flushing is finished, the ion exchanger can be cleaned, and the operation and maintenance efficiency and the operation and maintenance safety of the device are improved.

Description

Technical Field

[0001] This application relates to the field of ion exchangers, and particularly to a rotatable cleaning ion exchange system. Background Art

[0002] When the ion exchanger recovers precious metals (in the form of acid radicals) from the wastewater in the metallurgical and chemical industries, the wastewater is often strongly acidic and contains high concentrations of impurities such as calcium, magnesium, copper, iron, aluminum, sulfate, and chloride ions. After the resin is saturated by adsorption, there are a large number of the above impurities in the resin layer, and the impurities cannot be removed only through simple water washing, acid washing and other processes. When desorbing with alkaline substances such as ammonia water, a large amount of colloidal and ionic impurities exist in the desorbing solution, and the quality of the desorbing solution cannot meet the requirements of industrial production, seriously affecting the recovery of precious metals. At present, the commonly adopted solution is to take out the resin and manually clean it with acid, which is not only time-consuming, laborious and acid-consuming in the operation process, but also has potential safety hazards. Summary of the Utility Model

[0003] In view of this, this application proposes a rotatable cleaning ion exchange system, which can clean the ion exchanger and improve the operation and maintenance efficiency and safety of the device.

[0004] According to one aspect of this application, a rotatable cleaning ion exchange system is provided, including: an ion exchanger, a flushing water tank and a cleaning water tank.

[0005] A stirrer is arranged inside the ion exchanger, and a speed reducer is arranged at the top of the ion exchanger, and is connected between the speed reducer and the stirrer; an inlet, a backwash drain outlet, an outlet, a backwash inlet, an acid liquid inlet and a drain outlet are arranged on the ion exchanger; the outlet end of the flushing water tank is connected to the outlet through a pipeline, the backwash drain outlet is connected to the inlet end of the cleaning water tank through a pipeline, and a pipeline is also arranged on the backwash drain outlet and is suitable for connecting to a trench; the outlet end of the cleaning water tank is connected to the acid liquid inlet through a pipeline, and a pipeline is also arranged between the outlet end of the cleaning water tank and the acid liquid inlet and is connected to the inlet end of the cleaning water tank; the inlet of the ion exchanger is suitable for connecting to a water supply tank, the backwash inlet is suitable for connecting to a product water tank, and the drain outlet of the ion exchanger is suitable for connecting to a trench.

[0006] In a possible implementation manner, the ion exchanger includes: a cavity, an inlet pipe and a drain pipe; the connection position between the inlet pipe and the cavity is arranged close to the top of the cavity, the connection position between the drain pipe and the cavity is arranged close to the bottom of the cavity, and the inlet pipe and the drain pipe can be along.

[0007] In a possible implementation, the water inlet and the backwash drain port are provided on one side of the water inlet pipe that is not connected to the cavity; the water outlet and the backwash water inlet are provided on one side of the drain pipe that is not connected to the cavity; an acid solution inlet and a drain port are provided on the drain pipe, the acid solution inlet is provided at a position close to the bottom of the drain pipe, and the drain port is provided at the bottom of the drain pipe.

[0008] In a possible implementation, the mixer is a frame mixer or a blade mixer; the mixer includes a mixing rod and mixing blades, the top of the mixing rod passes through the top of the cavity and is connected to the speed reducer, the mixing blades are provided at the bottom of the mixing rod, and the mixing blades are provided at the middle position of the height of the cavity.

[0009] In a possible implementation, a water distribution nozzle is further provided in the cavity, the water distribution nozzle is arranged in a ring on the inner wall of the cavity, and there are two circles of water distribution nozzles, which are respectively arranged at a position close to the top in the middle of the cavity and a position close to the bottom in the middle of the cavity.

[0010] In a possible implementation, a sight glass and a manhole are provided on the cavity; the sight glass is provided on one side wall of the cavity, the number of the sight glasses is multiple, and the multiple sight glasses are arranged along the length direction; the manhole is provided at a position close to the bottom of the cavity.

[0011] In a possible implementation, the position close to the top of the water inlet pipe is bent, and the included angle between the bent position and the horizontal plane is 135°.

[0012] In a possible implementation, it further includes: a flushing water pump and a cleaning water pump; the flushing water pump is provided between the flushing water tank and the ion exchanger and is close to the flushing water tank; the cleaning water pump is provided between the outlet end of the cleaning water tank and the ion exchanger and is close to the outlet end of the cleaning water tank.

[0013] In a possible implementation, a flushing valve is provided between the flushing water pump and the ion exchanger; a first cleaning switching valve is provided on one side close to the outlet end of the cleaning water pump, a second cleaning switching valve is provided between the first cleaning switching valve and the inlet end of the cleaning water tank; an acid inlet valve is provided on one side close to the acid solution inlet of the ion exchanger; a cleaning liquid return valve is provided between the backwash drain port of the ion exchanger and the inlet end of the cleaning water tank.

[0014] In a possible implementation manner, a water inlet valve is arranged between the water supply tank and the ion exchanger; a water production valve is arranged between the ion exchanger and the water production tank; a flushing discharge valve is arranged between the backwashing drain outlet of the ion exchanger and the trench; a flushing drain valve is arranged between the emptying outlet of the ion exchanger and the trench.

[0015] Advantages of the present application: A speed reducer is arranged at the top of the ion exchanger, and a stirrer is arranged therein. When the resin is saturated in adsorption, the ion exchanger is highly cleaned with low-concentration hydrochloric acid. The low-concentration hydrochloric acid enters the ion exchanger from the flushing water tank through the water outlet and flushes from bottom to top, and then enters the cleaning water tank from the backwashing drain outlet at the top of the ion exchanger, so as to achieve the purpose of circulating flushing. During the cleaning process, the speed reducer at the top of the ion exchanger is started to drive the stirrer in the ion exchanger to rotate rapidly, so that the resin and the cleaning liquid are fully mixed. After the cleaning is completed, the cleaning liquid in the resin is cleaned with clean water, and the stirrer remains in the open state until the clean water flushing is completed. According to a rotatable cleaning ion exchange system of the present application, the ion exchanger can be cleaned, and the operation and maintenance efficiency and safety of the device can be improved.

[0016] According to the following detailed description of the exemplary embodiments with reference to the accompanying drawings, other features and aspects of the present application will become clear. Description of the Drawings

[0017] The drawings included in the specification and constituting a part of the specification show the exemplary embodiments, features and aspects of the present application together with the specification, and are used to explain the principles of the present application.

[0018] Figure 1 Schematic connection diagram of the rotatable cleaning ion exchange system showing the embodiment of the present application;

[0019] Figure 2 Front view of the ion exchanger showing the embodiment of the present application;

[0020] Figure 3 Perspective view of the ion exchanger showing the embodiment of the present application. Detailed Embodiments

[0021] The following will detail various exemplary embodiments, features and aspects of the present application with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0022] Among them, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0024] The special term "exemplary" herein means "serving as an example, embodiment, or illustration". Any embodiment described as "exemplary" herein need not be construed as superior to or better than other embodiments.

[0025] In addition, for better illustration of the present application, numerous specific details are given in the following detailed implementation manners. Those skilled in the art should understand that the present application can still be implemented without certain specific details. In some instances, methods, means, elements, and circuits well-known to those skilled in the art are not described in detail to highlight the gist of the present application.

[0026] Cavity A, speed reducer B, mixer C, water distribution nozzle D, manhole E, water inlet a, backwash water inlet b, water outlet c, backwash drain outlet d, exhaust port e, acid liquid inlet f, drain port g, middle drain port h, sight glass i, water inlet valve 1, product water valve 2, flushing water tank 3, flushing water pump 4, flushing valve 5, ion exchanger 6, cleaning water tank 7, cleaning water pump 8, first cleaning switching valve 9, second cleaning switching valve 10, acid inlet valve 11, cleaning liquid reflux valve 12, flushing discharge valve 13, flushing drain valve 14.

[0027] As shown in the figure, the ion exchange system capable of rotary cleaning includes: an ion exchanger 6, a cleaning water tank 7, and a flushing water tank 3.

[0028] The blender C is arranged inside the cavity A, the speed reducer B is arranged at the top of the cavity A, and the speed reducer B is electrically connected to the blender C; one end of the external pipeline is connected to the cavity A, and the other end is suitable for being connected to the outside of the ion exchanger 6. The number of the external pipelines is two, and the two external pipelines are respectively a water inlet pipe and a drain pipe; the connection position of the water inlet pipe and the cavity A is arranged close to the top of the cavity A. An inlet a and a backwash drain d are arranged on the side of the water inlet pipe that is not connected to the cavity A; the connection position of the drain pipe and the cavity A is arranged close to the bottom of the cavity A. An outlet c and a backwash inlet b are arranged on the side of the drain pipe that is not connected to the cavity A.

[0029] In a possible implementation manner, the blender C is a frame blender C or a blade blender C; the blender C includes a stirring rod and stirring blades. The top of the stirring rod passes through the top of the cavity A and is connected to the speed reducer B. The stirring blades are arranged at the bottom of the stirring rod, and the stirring blades are arranged at the middle position of the height of the cavity A.

[0030] In a possible implementation manner, it further includes: a water distribution nozzle D; the water distribution nozzle D is arranged inside the cavity A, and the water distribution nozzle D is attached to the inner wall of the cavity A; the water distribution nozzle D is provided with two rings along the inner wall of the cavity A, and is respectively arranged at the position close to the top in the middle of the cavity A and the position close to the bottom in the middle of the cavity A. The water distribution nozzle D adopts a combination of a perforated plate and a single-head water cap.

[0031] In a possible implementation manner, a sight glass i and a manhole E are opened on the cavity A; the sight glass i is arranged on one side wall of the cavity A, and the number of the sight glasses i is multiple, and the multiple sight glasses i are arranged in a row along the length direction; the manhole E is opened at the position close to the bottom of the cavity A.

[0032] In a possible implementation manner, an acid liquid inlet f and an emptying port g are arranged on the drain pipe; the acid liquid inlet f is arranged at the position close to the bottom of the drain pipe, and the emptying port g is arranged at the bottom of the drain pipe.

[0033] In a possible implementation manner, the position close to the top of the water inlet pipe is bent, and the included angle between the bent position and the horizontal plane is 135°.

[0034] In a possible implementation manner, a middle drain port is opened at the middle position on one side of the cavity A, and the middle drain port can be used as a drain port or an acid drain port.

[0035] According to another aspect of the present application, there is provided a cleaning device for an ion exchanger 6, which can clean the ion exchanger 6 of any one of the above, including: a flushing water tank 3 and a cleaning water tank 7; the outlet end of the flushing water tank 3 is connected to the water outlet c of the ion exchanger 6 through a pipeline; the backwash drain port d of the ion exchanger 6 is connected to the inlet end of the cleaning water tank 7 through a pipeline, and a pipeline is also provided on the backwash drain port d and is suitable for connecting to a trench; the outlet end of the cleaning water tank 7 is connected to the acid liquid inlet f of the ion exchanger 6 through a pipeline, and a pipeline is also provided between the outlet end of the cleaning water tank 7 and the acid liquid inlet f and is connected to the inlet end of the cleaning water tank 7; the water inlet a of the ion exchanger 6 is suitable for connecting to a water supply tank, the backwash water inlet b of the ion exchanger 6 is suitable for connecting to a product water tank, and the drain port g of the ion exchanger 6 is suitable for connecting to a trench.

[0036] In a possible implementation manner, it further includes: a flushing water pump 4 and a cleaning water pump 8; the flushing water pump 4 is arranged between the flushing water tank 3 and the ion exchanger 6 and is arranged close to the flushing water tank 3; the cleaning water pump 8 is arranged between the outlet end of the cleaning water tank 7 and the ion exchanger 6 and is arranged close to the outlet end of the cleaning water tank 7.

[0037] In a possible implementation manner, a flushing valve 5 is arranged between the flushing water pump 4 and the ion exchanger 6; a first cleaning switching valve 9 is arranged on one side close to the outlet end of the cleaning water pump 8, and a second cleaning switching valve 10 is arranged between the first cleaning switching valve 9 and the inlet end of the cleaning water tank 7; a feed acid valve 11 is arranged on one side close to the acid liquid inlet f of the ion exchanger 6; a cleaning liquid return valve 12 is arranged between the backwash drain port d of the ion exchanger 6 and the inlet end of the cleaning water tank 7.

[0038] In a possible implementation manner, a water inlet valve 1 is arranged between the water supply tank and the ion exchanger 6; a product water valve 2 is arranged between the ion exchanger 6 and the product water tank; a flushing discharge valve 13 is arranged between the backwash drain port d of the ion exchanger 6 and the trench; a flushing drain valve 14 is arranged between the drain port g of the ion exchanger 6 and the trench.

[0039] A speed reducer B is arranged on the top of the ion exchanger 6, a stirrer C is arranged inside the body, and a cleaning device is arranged outside the body. After the resin is saturated in adsorption, low-concentration hydrochloric acid is used for high-speed cleaning. The low-concentration hydrochloric acid enters the inside of the exchanger from the external flushing device and is flushed from bottom to top, and then enters the external cleaning device from the upper part of the exchanger for circulating flushing. At the same time, the speed reducer B on the top of the ion exchanger 6 is started to drive the stirrer C inside the body to rotate rapidly, so as to fully mix the resin and the cleaning liquid. After the cleaning is completed, when flushing the cleaning liquid in the resin with clean water, the stirrer C remains open until the clean water flushing is completed.

[0040] Further, the resin rinsing device includes a main pipe vertically arranged inside the ion exchanger 6 and several groups of rinsing pipes horizontally arranged on the main pipe. The rinsing pipes are communicated with the main pipe, and a plurality of water distribution nozzles D are evenly arranged on the wall surface of the rinsing pipes.

[0041] Further, at least five groups of rinsing pipes are horizontally arranged on the main pipe, and the number of each group of rinsing pipes is two. The distance between the rinsing pipe arranged on the side close to the bottom of the main pipe and the adjacent rinsing pipe is greater than the distance between the remaining adjacent rinsing pipes.

[0042] Further, the main pipe is made of 316L stainless steel pipe with DN50, and the rinsing pipes are made of 316L stainless steel pipe with DN25.

[0043] Example 1:

[0044] A certain metallurgical industry uses the ion exchange method to recover precious metals (anions) in acidic wastewater. Before resin desorption, it is necessary to pickle and wash the resin. During operation, it uses a rotatable cleaning ion exchanger 6. Deep cleaning and rinsing of the resin ensure the normal operation of the subsequent desorption and transformation processes of ion exchange; at the same time, the desorbing liquid meets the requirements of the production workshop.

[0045] 1. Open the acid inlet valve 11 and the water inlet valve 1 to prepare a 2-4% hydrochloric acid cleaning solution; at the same time, turn on the cleaning water pump 8 and the reflux valve to quickly mix the cleaning solution evenly.

[0046] 2. Sequentially open the cleaning water inlet valve 1 and the cleaning reflux valve to make the cleaning solution gradually pass through the cleaning water pump 8, the cleaning filter, the ion exchanger 6, and finally enter the cleaning water tank 7 to realize the internal circulation of the cleaning solution.

[0047] 3. Gradually increase the flow rate of the cleaning water pump 8, and observe the movement state of the resin through the sight glass i of the ion exchanger 6. When the resin is in a suspended state, turn on the motor and the reducer B at the top of the device body to make the stirrer C rotate.

[0048] 4. After the stirrer C runs continuously for 5 minutes, first stop the stirrer motor, and then stop the cleaning water pump 8 to make most of the cleaning solution flow back to the cleaning water tank 7. The cleaning solution in the ion exchanger 6 is discharged to the trench through the bottom drain valve.

[0049] 5. After the cleaning solution in the ion exchanger 6 is emptied, open the backwash water inlet valve 1 and the backwash drain valve, and rinse the resin with pure water. Until the pH of the drained water is neutral, sequentially close the backwash drain valve and the backwash water inlet valve 1, open the bottom drain valve, and empty the pure water in the ion exchanger 6. Wait for resin desorption.

[0050] It should be noted that although an ion exchange system with rotatable cleaning is introduced by taking this application as an example as above, those skilled in the art can understand that this application should not be limited thereto. In fact, users can flexibly set each parameter according to personal preferences and / or actual application scenarios as long as the design is reasonable.

[0051] In this way, by arranging a speed reducer at the top of the ion exchanger and arranging a stirrer therein, when the resin is saturated by adsorption, the ion exchanger is highly cleaned with low-concentration hydrochloric acid. The low-concentration hydrochloric acid enters the ion exchanger from the flushing water tank through the water outlet and flushes from bottom to top, and then enters the cleaning water tank from the backwashing drain port at the top of the ion exchanger, so as to achieve the purpose of circulating flushing. During the cleaning process, the speed reducer at the top of the ion exchanger is started to drive the stirrer in the ion exchanger to rotate rapidly, and the resin and the cleaning liquid are fully mixed. After the cleaning is completed, the cleaning liquid in the resin is cleaned with clean water, and the stirrer remains in the open state until the clean water flushing is completed. According to an ion exchange system with rotatable cleaning of this application, the ion exchanger can be cleaned, and the operation and maintenance efficiency and safety of the device can be improved.

[0052] The various embodiments of this application have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field 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, the actual application, or the improvement of the technology in the market, or to enable other ordinary technical personnel in the technical field to understand the disclosed embodiments.

Claims

1. A rotatable and cleanable ion exchange system, characterized in that: include: ion exchangers, flushing tanks, and cleaning tanks; A stirrer is arranged in the ion exchanger, a reducer is arranged on the top of the ion exchanger, and the reducer is connected to the stirrer; The ion exchanger is provided with a water inlet, a backwash drain outlet, a water outlet, a backwash water inlet, an acid liquid inlet and an emptying outlet; The outlet end of the flushing water tank is connected to the water outlet by a pipeline, the backwash drain port is connected to the inlet end of the cleaning water tank by a pipeline, and the backwash drain port is also provided with a pipeline suitable for connecting to the ditch; The outlet end of the cleaning water tank is connected to the acid liquid inlet by a pipeline, and a pipeline is also provided between the outlet end of the cleaning water tank and the acid liquid inlet to connect to the inlet end of the cleaning water tank; The water inlet of the ion exchanger is suitable for being connected to a water supply tank, the backwash water inlet is suitable for being connected to a water production tank, and the drain port of the ion exchanger is suitable for being connected to a ditch.

2. The rotatable and cleanable ion exchange system according to claim 1, characterized in that: The ion exchanger comprises: a cavity, a water inlet pipe and a drain pipe; The connection position between the water inlet pipe and the cavity is arranged near the top of the cavity, and the connection position between the drainage pipe and the cavity is arranged near the bottom of the cavity, and the water inlet pipe and the drainage pipe can be arranged along.

3. The rotatable and cleanable ion exchange system according to claim 2, characterized in that: The water inlet and the backwash drain are provided on the side of the water inlet pipe not connected to the cavity; The water outlet and the backwash water inlet are provided on the side of the drain pipe not connected to the cavity; The drain pipe is provided with an acid liquid inlet and an emptying port. The acid liquid inlet is arranged at a position close to the bottom of the drain pipe, and the emptying port is arranged at the bottom of the drain pipe.

4. The rotatable and cleanable ion exchange system according to any one of claims 2 to 3, characterized in that: The mixer is a frame mixer or a blade mixer; The mixer includes a stirring rod and stirring blades, the top of the stirring rod passes through the top of the cavity and is connected to the reducer, the stirring blades are arranged at the bottom of the stirring rod, and the stirring blades are arranged at the middle position of the cavity height.

5. The rotatable and cleanable ion exchange system according to any one of claims 2 to 3, characterized in that: A water distribution nozzle is also arranged in the cavity. The water distribution nozzle is arranged in a ring on the inner wall of the cavity, and the water distribution nozzle is arranged in two circles, which are respectively arranged in the middle of the cavity near the top and the middle of the cavity near the bottom.

6. The rotatable and cleanable ion exchange system according to any one of claims 2 to 3, characterized in that: The cavity is provided with a sight glass and a manhole; The viewing mirror is arranged on a side wall of the cavity, and there are multiple viewing mirrors, which are arranged in a longitudinal direction; The manhole is arranged at a position close to the bottom of the cavity.

7. The rotatable and cleanable ion exchange system according to claim 2 or 3, characterized in that: The water inlet pipe is bent near the top, and the angle between the bent position and the horizontal plane is 135°.

8. The rotatable and cleanable ion exchange system according to any one of claims 1 to 3, characterized in that: Also includes: Flushing and cleaning the pump; The flushing water pump is arranged between the flushing water tank and the ion exchanger, and is arranged close to the flushing water tank; The cleaning water pump is arranged between the outlet end of the cleaning water tank and the ion exchanger, and is arranged close to the outlet end of the cleaning water tank.

9. The rotatable and cleanable ion exchange system according to claim 8, characterized in that: A flushing valve is provided between the flushing water pump and the ion exchanger; A first cleaning switching valve is provided on one side close to the outlet end of the cleaning water pump, and a second cleaning switching valve is provided between the first cleaning switching valve and the inlet end of the cleaning water tank; One side of the acid inlet close to the ion exchanger and only the acid inlet valve; A cleaning liquid reflux valve is provided between the backwash drain outlet of the ion exchanger and the inlet end of the cleaning water tank.

10. The rotatable and cleanable ion exchange system according to claim 9, characterized in that: A water inlet valve is provided between the water supply tank and the ion exchanger; A water production valve is provided between the ion exchanger and the water production tank; A flushing discharge valve is provided between the backwash drain outlet of the ion exchanger and the ditch; A flushing and drainage valve is arranged between the drain port of the ion exchanger and the ditch.

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