CN114791450A - Desulfurization slurry on-line pH meter measuring device and method - Google Patents
Desulfurization slurry on-line pH meter measuring device and method Download PDFInfo
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- CN114791450A CN114791450A CN202210207521.9A CN202210207521A CN114791450A CN 114791450 A CN114791450 A CN 114791450A CN 202210207521 A CN202210207521 A CN 202210207521A CN 114791450 A CN114791450 A CN 114791450A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/302—Electrodes, e.g. test electrodes; Half-cells pH sensitive, e.g. quinhydron, antimony or hydrogen electrodes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/38—Cleaning of electrodes
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Abstract
The invention discloses a desulfurization slurry on-line pH meter measuring device and a method, which belong to the technical field of desulfurization, wherein the measuring device comprises a sampling container, a fixed support pipe, a sampling pipe, a washing water connecting pipe, a flow cell, an electrode, a pH probe and a washing water inlet pipe, wherein the flow cell is arranged in the sampling container, the bottom of the flow cell is provided with a door opening, the sampling pipe is arranged above the sampling container, one end of the electrode is inserted into the flow cell, the pH probe is arranged at one end of the electrode, the washing water inlet pipe is provided with a washing water electromagnetic valve, the washing water inlet pipe, the fixed support pipe and the washing water connecting pipe are sequentially communicated, the washing water connecting pipe is communicated with the flow cell, and the outlet of the washing water connecting pipe is arranged towards the pH probe. During measurement, slurry of the sampling pipe enters the sampling container, then the slurry flows into the flow cell from the door opening, contacts the pH probe to measure the pH value, can realize automatic flushing, saves water resources, reduces slurry dilution, has more accurate measurement data, and has great popularization value.
Description
Technical Field
The invention relates to an online pH meter measuring device and method, in particular to an online pH meter measuring device and method for desulfurization slurry, and belongs to the technical field of desulfurization.
Background
The pH value of the desulfurization absorption tower is a key factor for determining desulfurization efficiency and gypsum quality, and the accuracy of a pH measurement value can be influenced by the fault rate, the loss condition and the measurement mode of a pH measurement device, so that the desulfurization efficiency and the gypsum quality are uncontrollable. In order to improve the accuracy and reliability of pH measurement data and accurately improve the desulfurization efficiency and the gypsum quality, relevant technical personnel should analyze the factors influencing the desulfurization pH measured value, develop a novel pH measuring device, realize the measurement of the real-time property and the accuracy of the pH value, provide reliable data support for the operation of equipment, thereby reducing the operation cost of a desulfurization system and improving the controllability of the desulfurization efficiency and the gypsum quality.
The overall analysis of the desulfurization pH measuring device revealed the following problems:
1) calibration is frequent. The pH measurement device is inaccurate, resulting in frequent calibration by the maintainer (once per week), and high maintenance time cost.
2) The pH electrode is severely worn. The electrode is directly inserted into gypsum slurry for measurement, large particles in the slurry can impact an electrode bulb to damage the electrode, and the service life of the electrode is not more than three months.
3) The desulfurization efficiency is low. At present, the wet desulphurization method is used in the factory, and SO in the flue gas is replaced by limestone slurry 2 . When the pH value of the absorption slurry is too low in the desulfurization process, SO can be generated 2 The removal efficiency of (a) is decreased as shown in fig. 1.
4) The installation position is not reasonable. The current pH meter measuring device is unreasonable in installation position, cannot thoroughly clean the electrode in the washing process, cannot accurately control measured data, and can cause excessive waste of used washing water, limestone powder, station service power and the like.
5) The quality of gypsum is not easy to control. The failure of accurate control of the pH measurement data can affect the control of the operation on environmental parameters and also affect the quality of the gypsum as a byproduct of production.
Based on above background, designed a neotype pH measuring device of a section, it not only practices thrift manufacturing cost, improves measured data's accuracy and reliability, still can provide strong guarantee for accurate control desulfurization efficiency and gypsum quality.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the device and the method for measuring the pH value of the desulfurization slurry on line, which have the advantages of reasonable structural design, simple installation and operation, capability of realizing automatic flushing, water resource saving, reduction of slurry dilution, more accurate measurement data and great popularization value.
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides an online pH meter measuring device of desulfurization slurry, characterized by, includes sampling vessel, fixed bolster pipe, sampling tube, sparge water connecting pipe, flow cell, electrode, pH probe and sparge water inlet tube, the flow cell sets up in sampling vessel, the bottom in flow cell is provided with the door opening, the sampling tube sets up the top at sampling vessel, the one end of electrode is inserted to the flow cell in, the one end at the electrode is installed to the pH probe, install the sparge water solenoid valve on the sparge water inlet tube, and sparge water inlet tube, fixed bolster pipe and sparge water connecting pipe communicate in proper order, the sparge water connecting pipe communicates to the flow cell, and the export of sparge water connecting pipe arranges towards the pH probe.
Furthermore, online pH table measuring device of desulfurization thick liquid fixes in desulfurization thick liquid pipeline outlet department, changes the mode that electrode disect insertion carries out the measurement in the pipeline in the past, guarantees that the electrode measures under the no pressure-bearing state, avoids the washing away of pH probe under the thick liquid particulate matter pressure state, guarantees the measuring accuracy, prolongs the life-span of electrode.
Furthermore, the flushing water electromagnetic valve is connected to an instrument control system, is automatically opened once every 20 minutes, and is automatically closed after being opened and flushed for 2 minutes every time, so that the automatic control of the instrument is realized. The design changes the original mode of washing water, designs the washing frequency and the washing time, realizes the washing automation, and ensures the washing quality and the cleaning of the electrode.
Furthermore, during measurement, slurry in the sampling pipe enters the sampling container, then the slurry flows into the flow cell from the door opening, and then contacts the pH probe to measure the pH value.
Furthermore, during washing, washing water is aligned to a pH probe in the flow cell through a washing water electromagnetic valve, a fixed support pipe and a washing water connecting pipe to be washed.
Furthermore, when the flushing water electromagnetic valve is in an open state, the flushing water inlet pipe is filled with water, and the flushing water enters the water inlet pipe and sequentially passes through the fixed support pipe and the flushing water connecting pipe, and then directly and forwardly aims at the pH probe to flush. The washing water washes the pH probe and then reaches the flow cell, and then enters the sampling container through the door opening, and the height of the bottom surface of the sampling container is lower than that of the bottom surface of the flow cell, so that the residues washed by the pH probe can flow out from the door opening at the bottom of the side surface of the flow cell, and the purpose of fully washing the electrode is achieved.
Furthermore, when the flushing water electromagnetic valve is in a closed state, the slurry in the sampling pipe enters the sampling container, the slurry flows into the flow cell from the door opening, the slurry entering the flow cell further contacts the pH probe, the pH value of the slurry can be measured by the on-line pH meter, and meanwhile, the slurry from the sampling pipe continuously overflows out of the sampling container after contacting with the pH probe.
Compared with the prior art, the invention has the following advantages and effects:
1) and (4) automatically flushing. Install automatic washing unit additional at the circulation pond bottom, direct forward aims at the circulation pond in the pH probe wash, effectively avoided because of the electrode not in time wash or wash the electrode probe that thoroughly leads to and polluted the jam condition.
2) And the pressure-free slurry is measured, so that the measured data is more accurate. The original mode is used for direct measurement on a slurry pipeline, and water in slurry is easy to reversely permeate into an electrode, so that reference liquid in the electrode is diluted, and the measurement accuracy is influenced; the on-line pH meter measuring device designed by the invention is arranged at the outlet of the slurry pipeline, so that the electrode is ensured to be measured in a non-bearing state, and the correctness of reference voltage and the accuracy of measured data are ensured.
3) The device is convenient to maintain, safe and reliable. The online pH meter measuring device designed by the invention is not directly inserted into a slurry pipeline for measurement, so that the risk that the slurry sprayed out by the device in checking and maintenance endangers the personal safety is avoided; the electrode replacement and calibration are more convenient and faster, the service life of the electrode is obviously prolonged, and the maintenance workload of maintainers is reduced.
4) Saving water resource and reducing slurry dilution. The on-line pH meter measuring device designed by the invention automatically washes the electrode once in 20 minutes, and washes the electrode once for 2 minutes (the time is automatically set according to the requirement), so that the electrode can be washed and cleaned, and the waste of washing water is avoided; the washing water is saved, the washing water entering into a slurry system is reduced, and unnecessary slurry dilution is reduced.
Drawings
FIG. 1 is a graph of desulfurization efficiency versus pH.
Fig. 2 is a schematic view of the overall structure of the present invention.
In the figure: the device comprises a sampling container 1, a fixed support pipe 2, a sampling pipe 3, a washing water connecting pipe 4, a flow cell 5, a door opening 6, an electrode 7, a pH probe 8, a washing water inlet pipe 9, a washing water electromagnetic valve 10, a lead wire 11, a binding band 12 and a milling wrench opening 13.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
Referring to fig. 1, in the embodiment, an online pH meter measuring device of desulfurization slurry, including sampling container 1, fixed bolster pipe 2, sampling tube 3, sparge water connecting pipe 4, the circulation tank 5, electrode 7, pH probe 8 and sparge water inlet tube 9, circulation tank 5 sets up in sampling container 1, the bottom of circulation tank 5 is provided with door opening 6, sampling tube 3 sets up the top at sampling container 1, the one end of electrode 7 is inserted to the circulation tank 5, pH probe 8 installs the one end at electrode 7, install sparge water solenoid valve 10 on the sparge water inlet tube 9, and sparge water inlet tube 9, fixed bolster pipe 2 and sparge water connecting pipe 4 communicate in proper order, sparge water connecting pipe 4 communicates to circulation tank 5, and the export of sparge water connecting pipe 4 arranges towards pH probe 8.
In this embodiment, online pH table measuring device of desulfurization thick liquid is fixed at desulfurization thick liquid pipeline exit, changes the mode that electrode 7 directly inserted in the pipeline and measures in the past, guarantees that electrode 7 measures under the no pressure-bearing state, avoids scouring pH probe 8 under the thick liquid particulate matter pressure state, ensures measuring accuracy, prolongs electrode 7's life-span.
In this embodiment, the flushing water solenoid valve 10 is connected to an instrument control system, and is automatically opened once every 20 minutes, and is automatically closed after being opened and flushed for 2 minutes each time, so that automatic instrument control is realized.
During measurement, slurry in the sampling pipe 3 enters the sampling container 1, and then the slurry flows into the flow cell 5 from the door opening 6, and further contacts the pH probe 8 to perform pH value measurement.
During washing, washing water is aligned to a pH probe 8 in the flow cell 5 through a washing water electromagnetic valve 10, the fixed support pipe 2 and the washing water connecting pipe 4 for washing.
When the washing water electromagnetic valve 10 is in an open state, the washing water inlet pipe 9 is filled with water, and the water sequentially passes through the fixed support pipe 2 and the washing water connecting pipe 4, and then is directly and forwardly aligned with the pH probe 8 for washing. The rinsing water washes the pH probe 8 and then reaches the flow cell 5, and then enters the sampling container 1 through the door opening 6, and because the bottom height of the sampling container 1 is lower than that of the flow cell 5, the residue washed by the pH probe 8 can flow out from the door opening 6 at the bottom of the side surface of the flow cell 5, and the purpose of fully cleaning the electrode 7 is achieved.
When the flushing water electromagnetic valve 10 is in a closed state, the slurry in the sampling pipe 3 enters the sampling container 1, the slurry flows into the flow cell 5 from the door opening 6, the slurry entering the flow cell 5 further contacts the pH probe 8, the pH value of the slurry can be measured by the online pH meter, and meanwhile, the slurry from the sampling pipe 3 continuously contacts the pH probe 8 and then automatically overflows out of the sampling container 1.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides an online pH meter measuring device of desulfurization slurry, characterized by, includes sampling vessel (1), fixed bolster pipe (2), sampling tube (3), sparge water connecting pipe (4), flow-through cell (5), electrode (7), pH probe (8) and sparge water inlet tube (9), flow-through cell (5) set up in sampling vessel (1), the bottom of flow-through cell (5) is provided with door opening (6), sampling tube (3) set up the top at sampling vessel (1), the one end of electrode (7) is inserted to flow-through cell (5) in, the one end at electrode (7) is installed to pH probe (8), sparge water solenoid valve (10) is installed on sparge water inlet tube (9), and sparge water inlet tube (9), fixed bolster pipe (2) and sparge water connecting pipe (4) communicate in proper order, connecting pipe (4) communicate to flow-through cell (5), and the outlet of the washing water connection pipe (4) is arranged toward the pH probe (8).
2. The desulfurization slurry on-line pH meter measuring device as claimed in claim 1, wherein the desulfurization slurry on-line pH meter measuring device is fixed at the outlet of a desulfurization slurry pipeline, and the electrode (7) is used for measuring in a non-pressure-bearing state.
3. The online desulfurization slurry pH meter measuring device according to claim 1, wherein the flushing water solenoid valve (10) is connected to a meter control system and is automatically opened once every 20 minutes and automatically closed after 2 minutes of each opening and flushing.
4. A method for using the desulfurization slurry on-line pH meter measuring device according to any one of claims 1 to 3, characterized in that, during measurement, the slurry in the sampling pipe (3) enters the sampling container (1), and then the slurry flows into the flow cell (5) from the door opening (6), and further contacts the pH probe (8) to measure the pH value; when in washing, the washing water is aligned to a pH probe (8) in the flow cell (5) through a washing water electromagnetic valve (10), a fixed bracket pipe (2) and a washing water connecting pipe (4) for washing.
5. The use method of the online pH meter measuring device for the desulfurization slurry as claimed in claim 4, wherein when the flushing water solenoid valve (10) is in an open state, the flushing water inlet pipe (9) is fed with water, and the water passes through the fixed bracket pipe (2) and the flushing water connecting pipe (4) in sequence, and then is directly and forwardly aligned with the pH probe (8) for flushing; the washing water washes the pH probe (8) and then reaches the flow cell (5), and then enters the sampling container (1) through the door opening (6), the bottom height of the sampling container (1) is lower than the bottom height of the flow cell (5), and residues washed by the pH probe (8) flow out of the door opening (6) of the flow cell (5), so that the purpose of fully washing the electrode (7) is achieved.
6. The use method of the online pH meter measuring device for the desulfurized slurry according to claim 4, characterized in that when the electromagnetic valve (10) for washing water is in a closed state, the slurry in the sampling pipe (3) enters the sampling container (1), the slurry flows into the flow cell (5) from the door opening (6), the slurry entering the flow cell (5) contacts the pH probe (8), the pH value of the slurry is measured by the online pH meter, and simultaneously the slurry from the sampling pipe (3) continuously contacts the pH probe (8) and then automatically overflows out of the sampling container (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210207521.9A CN114791450A (en) | 2022-03-04 | 2022-03-04 | Desulfurization slurry on-line pH meter measuring device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210207521.9A CN114791450A (en) | 2022-03-04 | 2022-03-04 | Desulfurization slurry on-line pH meter measuring device and method |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4415858A (en) * | 1981-06-12 | 1983-11-15 | The United States Of America As Represented By The United States Department Of Energy | pH Meter probe assembly |
| CN102706943A (en) * | 2012-06-01 | 2012-10-03 | 轻工业环境保护研究所 | Cleaning device for pH meter and cleaning method thereof |
| CN103630578A (en) * | 2013-12-13 | 2014-03-12 | 贵州电力试验研究院 | pH on-line measurement method and device of desulfurizing absorption tower |
| DE202014007415U1 (en) * | 2014-09-17 | 2015-01-08 | Stefan Hinck | Device for mobile in situ pH-value measurement in soils |
| CN205581040U (en) * | 2016-05-10 | 2016-09-14 | 福建大唐国际宁德发电有限责任公司 | Desulfurization absorption tower thick liquid PH measuring device |
| CN206930617U (en) * | 2017-07-28 | 2018-01-26 | 衢州市鼎盛化工科技有限公司 | The online PH detectors and its detecting system of automatic cleaning electrode |
| CN208206856U (en) * | 2018-05-23 | 2018-12-07 | 云南龙镁环境科技有限公司 | A kind of slurries pH measuring device of desulfuration absorbing tower |
| CN110806428A (en) * | 2019-10-21 | 2020-02-18 | 华电电力科学研究院有限公司 | Special pH measuring device for generator inner cooling water system and working method thereof |
| CN211825816U (en) * | 2020-09-24 | 2020-10-30 | 山东畜牧兽医职业学院 | Portable pH meter |
| US20210208031A1 (en) * | 2020-01-07 | 2021-07-08 | Chinese Research Academy Of Environmental Sciences | Diffusive gradients in thin films (dgt) probe test device for sediment core in lake and test method using the same |
| CN218098980U (en) * | 2021-08-27 | 2022-12-20 | 华电国际电力股份有限公司十里泉发电厂 | Desulfurization absorption tower pH meter measuring sampling device |
| CN218180743U (en) * | 2022-08-19 | 2022-12-30 | 华电国际电力股份有限公司十里泉发电厂 | Desulfurization absorption tower pH meter measuring sampling device |
-
2022
- 2022-03-04 CN CN202210207521.9A patent/CN114791450A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4415858A (en) * | 1981-06-12 | 1983-11-15 | The United States Of America As Represented By The United States Department Of Energy | pH Meter probe assembly |
| CN102706943A (en) * | 2012-06-01 | 2012-10-03 | 轻工业环境保护研究所 | Cleaning device for pH meter and cleaning method thereof |
| CN103630578A (en) * | 2013-12-13 | 2014-03-12 | 贵州电力试验研究院 | pH on-line measurement method and device of desulfurizing absorption tower |
| DE202014007415U1 (en) * | 2014-09-17 | 2015-01-08 | Stefan Hinck | Device for mobile in situ pH-value measurement in soils |
| CN205581040U (en) * | 2016-05-10 | 2016-09-14 | 福建大唐国际宁德发电有限责任公司 | Desulfurization absorption tower thick liquid PH measuring device |
| CN206930617U (en) * | 2017-07-28 | 2018-01-26 | 衢州市鼎盛化工科技有限公司 | The online PH detectors and its detecting system of automatic cleaning electrode |
| CN208206856U (en) * | 2018-05-23 | 2018-12-07 | 云南龙镁环境科技有限公司 | A kind of slurries pH measuring device of desulfuration absorbing tower |
| CN110806428A (en) * | 2019-10-21 | 2020-02-18 | 华电电力科学研究院有限公司 | Special pH measuring device for generator inner cooling water system and working method thereof |
| US20210208031A1 (en) * | 2020-01-07 | 2021-07-08 | Chinese Research Academy Of Environmental Sciences | Diffusive gradients in thin films (dgt) probe test device for sediment core in lake and test method using the same |
| CN211825816U (en) * | 2020-09-24 | 2020-10-30 | 山东畜牧兽医职业学院 | Portable pH meter |
| CN218098980U (en) * | 2021-08-27 | 2022-12-20 | 华电国际电力股份有限公司十里泉发电厂 | Desulfurization absorption tower pH meter measuring sampling device |
| CN218180743U (en) * | 2022-08-19 | 2022-12-30 | 华电国际电力股份有限公司十里泉发电厂 | Desulfurization absorption tower pH meter measuring sampling device |
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