Online anion resin recovery system of boiler make-up water treatment system

Abstract

The utility model discloses an on-line anion resin recovery system of a boiler make-up water treatment system. The on-line anion resin recovery system comprises a cation bed mechanism, one end of the cation bed mechanism is provided with a communicating mechanism, and one end, far away from the cation bed mechanism, of the communicating mechanism is communicated with an anion bed mechanism; the communicating mechanism comprises a U-shaped pipe, the tail end of the U-shaped pipe is fixedly connected with a first valve body and a second valve body respectively, a linkage assembly used for driving is arranged between the first valve body and the second valve body, and the linkage assembly drives the first valve body and the second valve body to be opened and closed. A second valve body on one side of the anion bed mechanism is opened, then a pneumatic valve is opened, and the acid feeding time is controlled through the pneumatic valve, so that sodium hydroxide and sodium chloride mixed resuscitation liquid meeting requirements is formed in an anion bed; the problem of organic matter pollution of primary desalting resin is solved, the resin performance is improved, and the service life of the resin is prolonged; the regenerated acid and alkali loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial water treatment, in particular to an anionic resin online recovery system for a boiler feed water treatment system. Background Art

[0002] With the increasing shortage of water resources and the increasing amount of water used in industrial production, industrial water treatment technology has always been a key research direction. In recent years, many water treatment technologies have been introduced, such as microbial treatment, membrane technology treatment, reverse osmosis treatment, ion exchange treatment, etc. In the steam production process of thermal power generation or petrochemical and fertilizer enterprises, boilers are required for heat exchange, and then a large amount of boiler feed water needs to be treated to ensure the quality of boiler water vapor, reduce corrosion, scaling and salt accumulation of furnace tubes, and ensure the normal operation of the boiler, which is of great significance to the economic and safe operation of the unit. The existing boiler water treatment processes mainly include ion exchange and reverse osmosis membrane. The ion exchange method is mainly used for boiler feed water treatment of low-pressure units, while the reverse osmosis membrane method is mainly used for feed water treatment systems of high-pressure units.

[0003] For example, the utility model patent with publication number CN107200419A, titled "Boiler Feed Water Treatment System", and authorization announcement date 2017.09.26, includes a raw water tank, a pretreatment system and an ion exchange system; the ion exchange system includes a cation bed, an intermediate water tank, an anion bed and a desalted water tank, a decarbonizer is provided on the intermediate water tank, and the cation bed and the anion bed are connected to the acid regeneration system and the alkali regeneration system respectively; the top of the cation bed is connected to the cleaning tower on the cation bed, the bottom of the cation bed is connected to the cleaning tower under the cation bed, the cleaning tower on the cation bed is connected to the pretreatment system, and the cleaning tower under the cation bed is connected to the acid regeneration system and the intermediate water tank respectively; the top of the anion bed is connected to the cleaning tower on the anion bed, the bottom of the anion bed is connected to the cleaning tower under the anion bed, the cleaning tower on the anion bed is connected to the pretreatment system, and the cleaning tower under the anion bed is connected to the alkali regeneration system. The present invention improves the utilization rate of water resources, is easy to operate, has low operating costs, and has a high impurity removal rate.

[0004] The shortcoming of the existing technology is that, in order to solve the problem of organic contamination of anionic resin, an alkaline sodium chloride resuscitation method is adopted. Since the existing alkaline sodium chloride resuscitation treatment process includes preparing resuscitation fluid, soaking, flushing, etc., the resuscitation fluid needs to be transported and prepared, the resuscitation treatment is time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of the utility model is to provide an anion resin online recovery system for a boiler feed water treatment system, which moves again in the second stroke of the linkage component to open the second valve body on one side of the anion bed mechanism, and then opens the pneumatic valve and controls the acid inlet time through the pneumatic valve, so as to form a sodium hydroxide and sodium chloride mixed recovery liquid that meets the requirements in the anion bed; solve the problem of organic pollution of the primary desalination resin, improve the resin performance, extend the service life of the resin; and reduce the loss of regenerated acid and alkali.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an anion resin online recovery system for a boiler feed water treatment system, comprising a cation bed mechanism;

[0007] A connecting mechanism is provided at one end of the yang bed mechanism, and an end of the connecting mechanism away from the yang bed mechanism is connected with the yin bed mechanism;

[0008] The connecting mechanism comprises a U-shaped tube, the ends of which are fixedly connected to a first valve body and a second valve body, respectively, and a linkage assembly for driving is provided between the first valve body and the second valve body, and the linkage assembly drives the first valve body and the second valve body to open and close;

[0009] As a further description of the above technical solution:

[0010] The first valve body comprises a stop valve, one end of which is fixedly connected to a limiting frame, a locking bolt is slidably connected in the limiting frame, and the locking bolt passes through the stop valve.

[0011] As a further description of the above technical solution:

[0012] A movable groove is provided on the inner side of the lock bolt, a positioning groove is provided at the other end of the movable groove, and the positioning groove is provided at one end of the lock bolt.

[0013] As a further description of the above technical solution:

[0014] The two ends of the lock bolt are symmetrically fixedly connected with fixing ears, one end of the fixing ear is fixedly connected with a supporting spring, and the supporting spring is fixed on the stop valve.

[0015] As a further description of the above technical solution:

[0016] The linkage assembly includes a driving motor, one end of the driving motor is provided with a threaded bolt, the bottom end of the driving motor is fixedly connected to a fixing frame, a sleeve is threadedly connected to the threaded bolt, and one end of the sleeve is respectively fixedly connected to a long convex strip and a short convex strip.

[0017] As a further description of the above technical solution:

[0018] The cationic bed mechanism comprises a desalting tank, one end of which is connected to an acid inlet injector, the top of which is connected to an acid metering box, one end of which is connected to a cationic bed assembly via a pipeline, and a pneumatic valve 1 is fixedly connected to the pipeline.

[0019] As a further description of the above technical solution:

[0020] The anion bed mechanism comprises an alkali inlet injector, one end of which is connected to a pneumatic valve 2, and one end of which is connected to a anion bed assembly through a pipeline.

[0021] The utility model provides a negative resin online recovery system for boiler feed water treatment system, which has the following features:

[0022] Beneficial effects:

[0023] In the utility model, the second valve body on one side of the cathode bed mechanism is opened by moving the linkage component again in the second stroke, and then the pneumatic valve is opened and the acid inlet time is controlled by the pneumatic valve, so as to form a sodium hydroxide and sodium chloride mixed resuscitation liquid that meets the requirements in the cathode bed; solve the problem of organic pollution of the primary desalination resin, improve the resin performance, extend the service life of the resin; and reduce the loss of regenerated acid and alkali. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of an anionic resin online recovery system for a boiler feed water treatment system proposed by the utility model;

[0025] Figure 2 It is a structural schematic diagram of the connecting mechanism in the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the stop flow valve of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the linkage assembly in the utility model.

[0028] Legend: 1. Cationic bed mechanism; 11. Desalination tank; 12. Acid inlet injector; 13. Pneumatic valve one; 14. Cationic bed assembly; 15. Acid metering box; 2. Negative bed mechanism; 21. Alkali inlet injector; 22. Pneumatic valve two; 23. Negative bed assembly; 3. Connecting mechanism; 301. U-shaped tube; 31. First valve body; 311. Stop valve; 312. Limiting frame; 313. Lock bolt; 314. Positioning groove; 315. Movable groove; 316. Fixing ear; 317. Support spring; 32. Second valve body; 33. Pneumatic valve; 34. Linking assembly; 341. Driving motor; 342. Fixing frame; 343. Threaded bolt; 344. Sleeve; 345. Long convex strip; 346. Short convex strip. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] Reference Figure 1-4 A negative resin online recovery system for a boiler feed water treatment system comprises a positive bed mechanism 1; a connecting mechanism 3 is provided at one end of the positive bed mechanism 1, and an end of the connecting mechanism 3 away from the positive bed mechanism 1 is connected with a negative bed mechanism 2; the connecting mechanism 3 comprises a U-shaped tube 301, and the ends of the U-shaped tube 301 are respectively fixedly connected with a first valve body 31 and a second valve body 32, and a linkage component 34 for driving is provided between the first valve body 31 and the second valve body 32, and the linkage component 34 drives the first valve body 31 and the second valve body 32 to open and close;

[0031] Specifically, the positive bed mechanism 1 and the negative bed mechanism 2 are connected through a connecting mechanism 3, which includes a U-shaped tube 301 for connection, and a pneumatic valve 33 is distributed on the U-shaped tube 301, and a first valve body 31 and a second valve body 32 are located at both ends of the pneumatic valve 33. During normal water production, the first valve body 31 close to the positive bed mechanism 1 is opened in the first stroke of the linkage component 34, and the pneumatic valve 33 and the second valve body 32 close to the negative bed mechanism 2 are kept in a closed state to ensure that the acid does not leak into the negative bed mechanism 2. During the recovery treatment, the linkage component 34 is first moved again in the second stroke to open the second valve body 32 on the negative bed mechanism 2, and then the pneumatic valve 33 is opened and the acid injection time is controlled by the pneumatic valve 33, so as to form a NaOH and NaCl mixed recovery solution that meets the requirements in the negative bed; solve the problem of organic pollution of the primary desalination resin, improve the resin performance, and extend the service life of the resin; reduce the loss of regenerated acid and alkali.

[0032] The first valve body 31 includes a stop valve 311, one end of the stop valve 311 is fixedly connected to a limiting frame 312, a locking bolt 313 is slidably connected in the limiting frame 312, and the locking bolt 313 penetrates the stop valve 311; a movable groove 315 is provided on the inner side of the locking bolt 313, and a positioning groove 314 is provided at the other end of the movable groove 315, and the positioning groove 314 is provided at one end of the locking bolt 313; two ends of the locking bolt 313 are symmetrically fixedly connected to fixing ears 316, one end of the fixing ears 316 is fixedly connected to a supporting spring 317, and the supporting spring 317 is fixed to the stop valve 311; the linkage assembly 34 includes a driving motor 341, one end of the driving motor 341 is provided with a threaded bolt 343, the bottom end of the driving motor 341 is fixedly connected to a fixing frame 342, a sleeve 344 is threadedly connected to the threaded bolt 343, and one end of the sleeve 344 is respectively fixedly connected to a long convex strip 345 and a short convex strip 346;

[0033] Specifically, the driving motor 341 in the linkage assembly 34 drives the threaded bolt 343 to rotate, so that the sleeve 344 sleeved on the threaded bolt 343 and the long convex strip 345 and the short convex strip 346 fixedly connected thereto move synchronously, so that the first valve body 31 and the second valve body 32 respectively connected with the long convex strip 345 and the short convex strip 346 are opened and closed, so as to synchronously control the opening and closing mode of the first valve body 31 and the second valve body 32, improve the convenience of the pneumatic valve 33 in controlling the acid injection time, and reduce the cumbersomeness of manual operation. When the threaded bolt 343 moves in the reverse direction, the long convex strip 345 and the short convex strip 346 on the sleeve 344 are separated from the lock bolts 313 in the first valve body 31 and the second valve body 32 in a front-to-back separation order, and are reset by the support spring 317, so as to improve the automation of the flow stopping of the first valve body 31 and the second valve body 32, and the structure is simple and flexible to use.

[0034] The cation bed mechanism 1 includes a desalting tank 11, one end of which is connected to an acid injector 12, the top of which is connected to an acid metering box 15, one end of which is connected to a cation bed assembly 14 through a pipeline, and a pneumatic valve 13 is fixedly connected to the pipeline; the anion bed mechanism 2 includes an alkali injector 21, one end of which is connected to a pneumatic valve 22, and one end of which is connected to a anion bed assembly 23 through a pipeline.

[0035] Working principle: the positive bed mechanism 1 and the negative bed mechanism 2 are connected through the connecting mechanism 3, and the connecting mechanism 3 includes a U-shaped tube 301 for connection, and a pneumatic valve 33 is distributed on the U-shaped tube 301, and a first valve body 31 and a second valve body 32 are located at both ends of the pneumatic valve 33. During normal water production, the first valve body 31 close to the positive bed mechanism 1 is opened in the first stroke of the linkage component 34, and the pneumatic valve 33 and the second valve body 32 close to the negative bed mechanism 2 are kept in a closed state to ensure that the acid does not leak into the negative bed mechanism 2. During the resuscitation treatment, the linkage component 34 is first moved again in the second stroke to open the second valve body 32 on the negative bed mechanism 2, and then the pneumatic valve 33 is opened and the acid injection time is controlled by the pneumatic valve 33, so as to form a NaOH and NaCl mixed resuscitation fluid that meets the requirements in the negative bed.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A boiler feed water treatment system anion resin online recovery system, characterized in that: It comprises a yang bed mechanism (1); A connecting mechanism (3) is provided at one end of the yang bed mechanism (1), and an end of the connecting mechanism (3) away from the yang bed mechanism (1) is connected to the yin bed mechanism (2); The connecting mechanism (3) comprises a U-shaped tube (301), the ends of which are respectively fixedly connected to a first valve body (31) and a second valve body (32), a linkage assembly (34) for driving is provided between the first valve body (31) and the second valve body (32), and the linkage assembly (34) drives the first valve body (31) and the second valve body (32) to open and close.

2. The anion resin online recovery system for boiler feed water treatment system according to claim 1, characterized in that: The first valve body (31) comprises a stop valve (311), one end of the stop valve (311) is fixedly connected to a limiting frame (312), a locking bolt (313) is slidably connected inside the limiting frame (312), and the locking bolt (313) passes through the stop valve (311).

3. The anion resin online recovery system for boiler feed water treatment system according to claim 2, characterized in that: A movable groove (315) is provided inside the locking bolt (313), a positioning groove (314) is provided at the other end of the movable groove (315), and the positioning groove (314) is provided at one end of the locking bolt (313).

4. The anion resin online recovery system for boiler feed water treatment system according to claim 2, characterized in that: The two ends of the lock bolt (313) are symmetrically fixedly connected with fixing ears (316), one end of the fixing ear (316) is fixedly connected with a supporting spring (317), and the supporting spring (317) is fixed on the stop valve (311).

5. The anion resin online recovery system for boiler feed water treatment system according to claim 1, characterized in that: The linkage assembly (34) comprises a driving motor (341), one end of the driving motor (341) is provided with a threaded bolt (343), the bottom end of the driving motor (341) is fixedly connected to a fixing frame (342), a sleeve (344) is threadedly connected to the threaded bolt (343), and one end of the sleeve (344) is respectively fixedly connected to a long convex strip (345) and a short convex strip (346).

6. The anion resin online recovery system for boiler feed water treatment system according to claim 1, characterized in that: The cationic bed mechanism (1) comprises a desalting tank (11), one end of the desalting tank (11) is connected to an acid inlet injector (12), the top end of the acid inlet injector (12) is connected to an acid metering box (15), one end of the acid inlet injector (12) is connected to a cationic bed assembly (14) via a pipeline, and a pneumatic valve (13) is fixedly connected to the pipeline.

7. The anion resin online recovery system for boiler feed water treatment system according to claim 1, characterized in that: The negative bed mechanism (2) comprises an alkali inlet injector (21), one end of which is connected to a pneumatic valve 2 (22), and one end of which is connected to a negative bed assembly (23) via a pipeline.

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