CN210097694U - Device of power plant ration regenerated resin - Google Patents
Device of power plant ration regenerated resin Download PDFInfo
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- CN210097694U CN210097694U CN201920259972.0U CN201920259972U CN210097694U CN 210097694 U CN210097694 U CN 210097694U CN 201920259972 U CN201920259972 U CN 201920259972U CN 210097694 U CN210097694 U CN 210097694U
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Abstract
The utility model discloses a device of power plant's ration regenerated resin sets up sour/alkali concentration tester respectively to the entry and the exit that are located the regeneration tower, acquire the sour/alkali concentration around the reaction in real time, can acquire the sour/alkali concentration difference around the reaction automatically through the DCS system that sets up, obtain the degree of proximity of sour/alkali concentration before and after the reaction through the difference, judge the terminal point of regeneration reaction with this, and through the corresponding solenoid valve of DCS system control, realize full automatic operation. The utility model discloses can definitely know the terminal point of regeneration reaction to can control the quantity that is used for the sour/alkali of regeneration reaction, avoid the waste to sour/alkali lye and demineralized water, reach energy saving and emission reduction's purpose.
Description
Technical Field
The utility model belongs to the technical field of power plant's resin regeneration, a device of power plant's ration regenerated resin is related to.
Background
In a water treatment system of a power plant, such as a high-speed mixed bed, a negative bed, a positive bed and the like, resin is used for exchanging anions and cations in water to remove salt. When the resin is failed, hydrochloric acid is generally adopted to regenerate positive resin and sodium hydroxide is generally adopted to regenerate negative resin, so that the resin recovers the normal exchange capacity. During the regeneration process, the acid consumption and the alkali consumption are generally estimated, and the acid consumption and the alkali consumption are roughly calculated by utilizing the resin work exchange capacity provided by a resin manufacturer. This process has a number of disadvantages, firstly the working exchange capacity of the resin is not stable and the working exchange capacity of different batches varies. Secondly, because the real acid consumption and the real alkali consumption can not be accurately grasped, in order to achieve the purpose of complete regeneration of the resin, the calculation result is multiplied by the safety factor, the acid consumption and the alkali consumption are often far excessive, and the serious waste of acid and alkali, the increase of regenerated waste liquid, the increase of desalted water consumption after the regeneration and the like are caused. The extensive regeneration mode does not meet the requirements of energy conservation and emission reduction.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device of power plant's ration regenerated resin to solve the serious waste of resin regeneration acid-base consumption that exists among the prior art, the regeneration waste liquid increases, the extravagant serious problem of demineralized water.
In order to realize the above purpose, the utility model discloses the technical scheme who adopts is: an apparatus for quantitatively regenerating resin in a power plant, comprising: and the first acid/alkali concentration meter and the second acid/alkali concentration meter are respectively communicated with the acid/alkali inlet pipeline and the regeneration liquid outlet pipeline, wherein the first acid/alkali concentration meter is used for detecting the acid/alkali concentration participating in the reaction, and the second acid/alkali concentration meter is used for detecting the acid/alkali concentration of the regeneration liquid after the reaction.
Further, the output end of the second acid/alkali concentration meter is connected with a DCS system, and the DCS system is used for acquiring data of the second acid/alkali concentration meter and outputting a difference value between the acid/alkali concentration participating in the reaction and the acid/alkali concentration of the regenerated liquid at the outlet; and a second electromagnetic valve is installed at the input end of the second acid/alkali concentration meter and responds to the command of the DCS system.
And the device further comprises a conductivity meter communicated with the regenerated liquid outflow pipeline, wherein a first electromagnetic valve is arranged at the input end of the conductivity meter and responds to an instruction of the DCS.
And the second acid/alkali concentration meter is connected to a pipeline between the conductivity meter and the regeneration tower through a branch pipe.
And the DCS is used for outputting the difference value between the acid/alkali concentration participating in the reaction and the acid/alkali concentration of the regeneration liquid, and when the difference value is less than or equal to 0.5%, the regeneration step is controlled to be ended.
The utility model provides a method for power plant quantitative regeneration resin, comprising the following steps:
s1, gradually adding acid/alkali with the concentration of C1 into the regeneration tower;
s2, detecting the acid/alkali concentration C2 of the regenerated liquid after reaction in real time;
and S3, obtaining a difference value delta C by subtracting the C1 from the C2, finishing regeneration when the delta C is less than or equal to a set value, controlling the first electromagnetic valve and the second electromagnetic valve to be closed, and stopping adding the acid/alkali.
Further, in the step S1, the acid/alkali concentration C1 for the regeneration reaction is measured by the first acid/alkali concentration meter.
Further, in step S2, the acid/alkali concentration C2 of the regenerated solution after the reaction is measured by a second acid/alkali concentration meter.
Further, in step S3, Δ C is automatically acquired by a DCS system connected to the second acid/alkali concentration meter.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
the concentration of acid/alkali in the regenerated liquid after reaction can be obtained by adding a pipeline in a waste liquid discharge branch of the regeneration tower to be communicated with a second acid/alkali concentration instrument, and the concentration of acid/alkali liquid for reaction is unchanged, so that whether the regeneration reaction is finished or not can be known by comparing the concentration of acid/alkali liquid before reaction, and an accurate regeneration reaction end point is obtained.
Further, an acid/alkali concentration meter is arranged at the outlet of the regeneration tower, so that the acid/alkali concentration of the regenerated liquid after reaction can be obtained; the concentration of acid/alkali after reaction can be automatically obtained through the DCS, and after parameters are deployed on the DCS, the difference value of the concentration of acid/alkali before and after reaction can be automatically obtained; and then, by connecting the electromagnetic valve, the DCS can automatically complete the control of the regeneration reaction, thereby being convenient for operation.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention;
in the figure: 1. the acid concentration meter comprises a first acid/alkali concentration meter, a second acid/alkali concentration meter, a third acid/alkali concentration meter, a fourth acid/alkali concentration meter, a.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The basic principle of the water treatment and resin regeneration process is as follows: the cation resin is changed into hydrogen type resin after regeneration, represented by RH, and the anion resin is changed into hydrogen-oxygen type resin after regeneration, represented by ROH; in the water treatment process, the H ions in the cation resin exchange cations (such as calcium ions, magnesium ions, sodium ions and the like) in water, and the OH ions in the anion resin exchange anions (such as chloride ions, nitrate radicals, bicarbonate radicals and the like) in water; the regeneration process is just opposite, cations in the failure cation resin exchange with H ions in hydrochloric acid to be converted into hydrogen type RH, and anions in the failure anion resin exchange with OH ions in sodium hydroxide to be converted into hydroxide type ROH.
And the like, 
and the like.
As shown in fig. 1, the device for quantitatively regenerating resin in an electric field of the present invention comprises a regeneration tower, wherein an acid (alkali) solution inlet is arranged at the upper part of the regeneration tower, and a first acid/alkali concentration meter 1 is arranged at the inlet for measuring the acid (alkali) concentration participating in the resin regeneration reaction; the bottom of the regeneration tower is provided with a regeneration liquid outlet, wherein an online conductivity meter 3 and an online acid (alkali) concentration meter 2 of the regeneration outlet are installed at the regeneration liquid outlet, a first electromagnetic valve 4 is installed at the inlet end of the online conductivity meter 3, a second electromagnetic valve 5 is installed at the inlet end of the second acid/alkali concentration meter 2, and the output end of the second acid/alkali concentration meter 2 is connected to a distributed centralized control system (DCS); the distributed centralized control system (DCS) is used for realizing the automatic judgment of the regeneration end point, namely when C1-C2 is less than or equal to 0.5 percent, the regeneration step is ended, and the next replacement stage is automatically switched to; a branch pipe is led out from a sampling pipe of the conductivity meter 3 and is used for being connected with the second acid-base concentration meter 2, the problem that the sampling pipe is difficult to realize due to the fact that the sampling pipe is connected with a hole through the sampling pipe is solved, the conductivity meter 3 is used for washing water in the next two steps after regeneration is finished, and the washing is qualified when the conductivity is smaller than the standard.
The utility model discloses judge the regeneration terminal point according to the very little principle of the concentration difference of the back business turn over regeneration liquid of resin complete regeneration. When in use, the anion bed is selected from an online alkali concentration meter, and the cation bed is selected from an online acid concentration meter. When acid (alkali) is fed in the regeneration process, the DCS automatically opens the sampling electromagnetic valve to start to measure the acid (alkali) concentration, when the acid (alkali) concentration reaches a certain value, the resin regeneration can be judged to reach the end point, and the next step is carried out after the regeneration is finished.
The cation resin needs acid regeneration, the concentration of the control acid is 3% -5% during regeneration, the anion resin needs alkali regeneration, the concentration of the control alkali is 2% -4% during regeneration, and the acid (alkali) concentration C1 at the inlet of the regeneration liquid is basically unchanged. The utility model relates to a method for regenerating resin quantitatively in an electric field, which comprises the following steps: the second electromagnetic valve 5 is opened, the acid (alkali) concentration C2 of the regenerated liquid after reaction at the outlet of the regeneration tower is measured, and the acid (alkali) concentration C2 at the outlet of the regenerated liquid slowly rises from 0 along with the downward movement of the interface of the regenerated liquid. When the concentration of C1-C2 is less than or equal to 0.5 percent, the acid (alkali) concentration of the regenerated liquid after reaction is close to the acid (alkali) concentration participating in the reaction, which indicates that the regeneration is finished, DCS judges that the regeneration is finished according to the condition that the concentration of C1-C2 is less than or equal to 0.5 percent, the second electromagnetic valve 5 is closed after the time delay is 20s, and the next step of regeneration is automatically carried out.
Compare and only designed the online concentration meter of regenerator column import in traditional design, as the basis of the sour (alkali) concentration of control regulation inlet, the utility model discloses discharge the branch road to regenerator column waste liquid and increase water pipe all the way to be connected to online conductivity meter 3 and second acid/alkali concentration appearance 2 through first solenoid valve 4 and second solenoid valve 5, second acid/alkali concentration appearance 2 is connected with DCS, and DCS reads the numerical value of second acid/alkali concentration appearance 2, when reaching certain value, shows that the sour (alkali) concentration of regenerator column's import and export is close, and regeneration process is accomplished this moment.
Claims (6)
1. An apparatus for quantitatively regenerating resin in a power plant, comprising: the acid/alkali concentration meter comprises a regeneration tower, an acid/alkali inlet pipeline and a regeneration liquid outlet pipeline, wherein the acid/alkali inlet pipeline and the regeneration liquid outlet pipeline are communicated with the regeneration tower, one end of the acid/alkali inlet pipeline extends into the regeneration tower from the top of the regeneration tower, a first acid/alkali concentration meter (1) is installed on the acid/alkali inlet pipeline, and the first acid/alkali concentration meter (1) is used for detecting the concentration of acid/alkali participating in reaction; the regenerated liquid outflow pipeline is communicated with the bottom of the regeneration tower, a second acid/alkali concentration meter (2) is arranged on the regenerated liquid outflow pipeline, and the second acid/alkali concentration meter (2) is used for detecting the acid/alkali concentration of the regenerated liquid after reaction.
2. A device for quantitatively regenerating resin in a power plant according to claim 1, characterized in that the output end of the second acid/alkali concentration meter (2) is connected with a DCS system, and the DCS system is used for acquiring the data of the second acid/alkali concentration meter (2) and outputting the difference between the acid/alkali concentration participating in the reaction and the acid/alkali concentration of the regeneration liquid; and a second electromagnetic valve (5) is installed at the input end of the second acid/alkali concentration meter (2), and the second electromagnetic valve (5) is connected to a regeneration liquid outflow pipeline between the second acid/alkali concentration meter (2) and the regeneration tower.
3. A plant resin quantitative regenerating device according to claim 2, characterized in that the second electromagnetic valve (5) is opened and closed in response to the command of DCS system.
4. A device for quantitatively regenerating resin in power plant according to claim 1, characterized by further comprising a conductivity meter (3) communicated with the regeneration liquid outflow conduit, wherein the input end of the conductivity meter (3) is provided with a first electromagnetic valve (4), and the first electromagnetic valve (4) is connected to the regeneration liquid outflow conduit between the conductivity meter (3) and the regeneration tower.
5. A plant resin quantitative regenerating device according to claim 4, characterized in that the first solenoid valve (4) is opened and closed in response to the command of DCS system.
6. A plant quantitative resin regeneration device according to claim 4, characterized in that the second acid/base concentration meter (2) is connected to the pipe between the conductivity meter (3) and the regeneration tower through a branch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920259972.0U CN210097694U (en) | 2019-02-28 | 2019-02-28 | Device of power plant ration regenerated resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920259972.0U CN210097694U (en) | 2019-02-28 | 2019-02-28 | Device of power plant ration regenerated resin |
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| CN210097694U true CN210097694U (en) | 2020-02-21 |
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| CN201920259972.0U Active CN210097694U (en) | 2019-02-28 | 2019-02-28 | Device of power plant ration regenerated resin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731619A (en) * | 2019-02-28 | 2019-05-10 | 西安热工研究院有限公司 | A kind of device and method that power plant quantifies regenerating resin |
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2019
- 2019-02-28 CN CN201920259972.0U patent/CN210097694U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731619A (en) * | 2019-02-28 | 2019-05-10 | 西安热工研究院有限公司 | A kind of device and method that power plant quantifies regenerating resin |
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