CN116202815A - On-line detecting device for chloride ion concentration of absorption tower - Google Patents
On-line detecting device for chloride ion concentration of absorption tower Download PDFInfo
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Abstract
The invention discloses an online detection device for chloride ion concentration of an absorption tower, which comprises a tower body; the sampling device is connected with the tower body and is used for sampling the slurry sample in the tower body; the detection device is connected with the sampling device; the analysis processing module is in signal connection with the sampling device and the detection device; the sample recovery device is connected with the analysis processing module and used for recovering the sample and cleaning the detection device; the invention discloses a device for detecting the concentration of chloride ions in an absorption tower on line, which detects slurry samples in the absorption tower through a PH value detection device and a chloride ion concentration detection device, and sends instructions to hardware equipment of the device according to detection results to drive each link to work; the method has the advantages that the detection period is short in the implementation process, the detection can be timely carried out when the concentration of the chloride ions is excessive, and a specific coping method can be implemented according to the change condition when the change of the PH value and the concentration of the chloride ions is detected, so that the damage of the chloride ions to the inside of the absorption tower is avoided.
Description
Technical Field
The invention relates to the technical field of online detection, in particular to an online side detection device for chlorine ion concentration of an absorption tower.
Background
In the limestone-gypsum wet flue gas desulfurization process of a thermal power plant, 0.01% -0.2% of chlorine element contained in fire coal enters a desulfurization device along with flue gas after combustion, and due to the cyclic use of water in the desulfurization device, chlorine ions are gradually enriched in absorption slurry, so that the concentration of chlorine ions in the absorption tower slurry is seriously out of standard, and the concentration of chlorine ions in the absorption tower is out of standard, so that corrosion prevention damage and corrosion of system equipment are caused, the desulfurization efficiency is reduced, the gypsum scaling tendency is increased, and meanwhile, the quality of gypsum is influenced and the plant power consumption is increased. The safe, stable and economic operation of the desulfurization device is seriously affected.
Aiming at the problem that the concentration of chloride ions in an absorption tower exceeds the standard, the conventional measures and methods mainly adopt an assay class for sampling, and judge the concentration in a sample by a chemical method of silver nitrate precipitation aiming at the sample; the cycle is long in the implementation process, the labor capacity is large, and the chloride ions cannot be found in time when the concentration of the chloride ions is excessive, so that the damage of the chloride ions to the inside of the absorption tower is easy to cause; therefore, an online detecting device for chlorine ion concentration of an absorption tower is urgently needed.
Disclosure of Invention
In view of the above, the invention provides an online detecting device for chloride ion concentration of an absorption tower;
in order to achieve the above purpose, the present invention provides the following technical solutions:
an on-line detecting device for chloride ion concentration of an absorption tower is characterized by comprising a tower body;
the sampling device is connected to the bottom end of the tower body and used for obtaining a slurry sample in the tower body;
the detection device is connected with the sampling device and is used for detecting the PH value and the chloride ion concentration of the sample;
the analysis processing module is in signal connection with the sampling device and the detection device and is used for controlling the work of the sampling device and analyzing and processing the detection result;
and the sample recovery device is connected with the analysis processing module and is used for recovering the sample.
Preferably, in the above-mentioned online detection device for chloride ion concentration in an absorption tower, a slurry pool and an air inlet channel are provided inside the tower body;
and two detection holes are formed and are respectively formed on two side walls below the tower body.
Preferably, in the above-mentioned online detecting device for chloride ion concentration in an absorption tower, the sampling device comprises:
the liquid suction section of the sampling pipeline is fixedly connected in the detection holes at two sides of the tower body, and the liquid suction end of the sampling pipeline penetrates through the detection holes and extends to the bottom of the slurry;
the top end of the sampling tube is fixedly connected with the liquid discharge end of one of the sampling pipelines, the bottom end of the sampling tube is provided with a recovery valve, and the recovery valve is connected with the sample recovery device; the inner wall of the first sampling tube is provided with a first liquid level sensor;
and the electromagnetic valve is arranged between the sampling pipeline and the first sampling tube.
Preferably, in the above-mentioned online detecting device for chloride ion concentration in an absorption tower, the detecting device includes:
the top end of the PH value sensor is fixedly connected to the top end of the sampling tube, and the bottom end of the PH value sensor contacts with the slurry sample;
the chloride ion concentration detection unit, set up in inside the sampling tube, it includes: the probe is arranged at the bottom of the sampling tube and is used for contacting a slurry sample; and the chloride ion concentration sensor is connected with the probe and obtains the chloride ion concentration value of the slurry sample according to the data acquired by the probe.
Preferably, in the above-mentioned online detecting device for chloride ion concentration in an absorption tower, the analysis processing module includes:
the database is connected with the PH value sensor, the chloride ion concentration sensor and the liquid level sensor I, and receives and stores PH value data, chloride ion concentration data and liquid level data; the database contains a preset PH value data range, a chloride ion concentration data range and a liquid level data range;
the analysis unit is used for comparing detection results of different parameters in the database with preset parameter ranges respectively and generating an alarm instruction according to the analysis results; the analysis unit acquires liquid level data of the first liquid level sensor in real time and generates an infusion instruction according to the liquid level data;
the processor is in signal connection with the analysis unit and is used for receiving an alarm instruction and a liquid level instruction; the processor is connected with the electromagnetic valve;
the PH value alarm is in signal connection with the processor and is provided with a correct alarm lamp, a high-acid alarm lamp and a high-alkali alarm lamp;
the chloride ion concentration alarm is in signal connection with the processor and is provided with a correct alarm lamp and a wrong alarm lamp;
the alert instruction includes:
setting the detected PH value data as A, and setting the preset PH value data range between A and A;
setting the detected chloride ion concentration data as B, and setting the preset chloride ion concentration data range between B and B;
when A < A < A is judged, the analysis unit sends a primary instruction to the processor; when A < A is judged, the analysis unit sends a secondary instruction to the processor; when A > A is judged, the analysis unit sends a three-level instruction to the processor;
when B < B < B or B < B is judged, the analysis unit sends a four-stage instruction to the processor; when B > B is judged, the analysis unit sends a five-stage instruction to the processor;
the infusion instructions include:
setting the detected liquid level data as C, and setting the preset liquid level data as C-C;
when C < C is judged, the analysis unit sends a six-level instruction to the processor; when C < C < C or C > C is determined, then the analysis unit sends a seven-level instruction to the processor.
Preferably, in the above-mentioned online detecting device for chloride ion concentration in an absorption tower, when receiving the first-level instruction, the processor drives a correct alarm lamp of the PH alarm to be turned on, and drives the recovery valve to be turned on;
when the processor receives the secondary instruction, the processor drives a high-acid alarm lamp of the PH value alarm to be turned on, and drives the recovery valve to be opened;
when the processor receives the three-level instruction, the processor drives a high-alkali alarm lamp of the PH value alarm to be turned on, and drives the recovery valve to be opened;
when the processor receives the four-level instruction, driving a correct alarm lamp of the chloride ion concentration alarm to be turned on, and driving the recovery valve to be opened;
when the processor receives the five-level instruction, driving an error alarm lamp of the chloride ion concentration alarm to light up and driving the recovery valve to open;
when the processor receives the six-level instruction, the electromagnetic valve is driven to be opened, and the recovery valve is driven to be closed;
and when the processor receives the seven-stage instruction, the electromagnetic valve is driven to be closed, and the recovery valve is driven to be closed.
Preferably, in the above-mentioned online detection device for chloride ion concentration in an absorption tower, the sample recovery device comprises:
the absorption tower drainage pit is arranged below the detection device and used for receiving the detected slurry sample, and a recovery pipeline II is arranged between the absorption tower drainage pit and the tower body;
a liquid inlet end of the recovery pipeline I is connected with the recovery valve at the corresponding side, and a liquid outlet end of the recovery pipeline I is arranged in the drainage pit of the absorption tower;
the filtering component is arranged in the first recovery pipeline and is used for filtering the slurry sample through a filter screen;
the recovery pump is arranged in the second recovery pipeline and is controlled to act through the liquid level interlocking component; the liquid level interlocking assembly comprises a liquid level sensor II, a liquid level detector and an alarm display, wherein the liquid level sensor II and the liquid level detector are respectively arranged in the drainage pit of the absorption tower and the tower body and are connected with an alarm display circuit so as to realize advanced alarm on the high and low liquid levels of the drainage pit of the absorption tower and the tower body; the recovery pump is connected with the alarm display. When the slurry in the drainage pit of the absorption tower reaches a specified value, driving a recovery pump to work;
the flushing assembly is arranged above the sampling tube and comprises a water tank, a high-pressure pump and a nozzle; a flushing pipeline is arranged between the water tank and the nozzle, and the nozzle penetrates through the top plate of the sampling tube; the flushing assembly is electrically connected with the recovery valve and synchronously works with the recovery valve.
Preferably, in the above-mentioned online detecting device for chloride ion concentration in an absorption tower, the tower body further includes:
a concentration reducing device in signal connection with the processor; the concentration reducing device comprises a dosing box and a second electromagnetic valve, and silver nitrate crystals are arranged in the dosing box; when the processor receives a four-level instruction, the second electromagnetic valve is driven to be closed; when the processor receives a five-level instruction, the second electromagnetic valve is driven to open, and silver nitrate crystals are put into the slurry pool to react with hydrogen chloride in the slurry to generate silver chloride sediment and nitric acid;
the PH value adjusting device is in signal connection with the processor; the PH value reducing device is arranged at the bottom of the slurry and comprises a first dosing tank, a second dosing tank, a first valve and a second valve; when the processor receives a first-level instruction, the valve is kept closed; when the processor receives the second-level instruction, the valve I is driven to be opened, alkaline solution in the dosing tank I is released, and when the processor receives the first-level instruction, the valve I is recovered to be closed; when the processor receives the third-level instruction, the valve II is driven to open, the acid solution in the dosing tank II is released, and when the processor receives the first-level instruction, the valve I is recovered to be closed.
Preferably, in the above-mentioned online detecting device for chloride ion concentration in an absorption tower, the database draws a function graph of the detection result of the same parameter; displaying the function curve graph through a display screen; and predicting the increasing and decreasing trend of the concentration of chloride ions and the PH value in the absorption tower by calculating the slope of the curve.
The flow of the invention is as follows: firstly, opening an electromagnetic valve, conveying a slurry sample in a slurry pool to a sampling tube along a sampling pipeline, and closing the electromagnetic valve when the liquid level in the sampling tube reaches a standard; the PH value sensor detects a sample in the sampling tube to obtain PH value data; the chloride ion concentration detection unit detects the chloride ion concentration of a sample through the probe and the chloride ion concentration sensor, so that chloride ion concentration data are obtained; the database receives the PH value data, the chloride ion concentration data and the liquid level data in the sampling tube; the analysis unit is used for respectively comparing the PH value data, the chloride ion concentration data and the liquid level data in the sampling tube through a preset data range in the database, and sending an alarm instruction and a liquid level instruction to the processor according to a comparison result; the processor controls the working states of the PH alarm, the chloride ion concentration alarm, the extraction pump, the recovery valve and the recovery pump according to the instruction, so that the on-line detection of the chloride ion concentration is realized; after the detection process is finished, the recovery valve is opened, a sample in the sampling tube flows into the absorption tower drainage pit, and the recovery pump is driven by the liquid level interlocking to convey the slurry sample in the absorption tower drainage pit back to the slurry pool; the processor controls the concentration reducing device and the PH adjusting device according to the alarm instruction, so that the chloride ion concentration in the slurry pond is reduced and the PH value is adjusted.
Compared with the prior art, the invention discloses a device for detecting the chloride ion concentration of the absorption tower on line, which detects the slurry sample in the absorption tower through the PH value detection device and the chloride ion concentration detection device, and sends an instruction to hardware equipment of the device according to the detection result to drive each link to work, thereby achieving the effect of on-line detection; the method has the advantages that the detection period is short in the implementation process, no labor force is needed, the method can be found out in time when the concentration of the chloride ions is excessive, and a specific coping method can be implemented according to the change condition when the change of the PH value and the concentration of the chloride ions is detected, so that the damage of the chloride ions to the inside of the absorption tower is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic flow chart of the invention;
FIG. 3 is a flow chart of the sample recovery apparatus of the present invention;
FIG. 4 is a flow chart of the apparatus for reducing concentration and adjusting pH according to the present invention.
In the figure: 1. a tower body; 2. a sampling pipeline; 3. an electromagnetic valve; 4. a sampling tube; 5. a recovery valve; 6. a first recovery pipeline; 7. a filter assembly; 9. a recovery pump; 10. drainage pit of absorption tower; 11. a second recovery pipeline; 20. a water tank; 21. a high pressure pump; 22. and (3) a nozzle.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the present invention, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Example 1:
the embodiment provides an online detection device for chloride ion concentration of an absorption tower, which is shown in figure 1 and comprises a tower body 1;
the device is connected to the bottom end of the tower body 1 and is used for obtaining a slurry sample in the tower body 1;
the detection device is connected with the sampling device and is used for detecting the PH value and chloride ion concentration of the sample;
the analysis processing module is in signal connection with the sampling device and the detection device and is used for controlling the work of the sampling device and analyzing and processing the detection result;
and the sample recovery device is connected with the analysis processing module and is used for recovering the sample.
The principle of the technical scheme is as follows: based on the absorption tower structure, the dispersed subsystems are organically interconnected by combining a PH detection device, a chloride ion concentration detection device, a database, an analysis unit, a processing unit and a recovery device, and an operation, detection, analysis, operation and feedback integrated system is established.
The beneficial effects of this technical scheme are: the method has the advantages that the detection period is short in the implementation process, no labor force is needed, the method can be found out in time when the concentration of the chloride ions is excessive, and a specific coping method can be implemented according to the change condition when the change of the PH value and the concentration of the chloride ions is detected, so that the damage of the chloride ions to the inside of the absorption tower is avoided.
Example 2:
the embodiment provides an online detection device for chloride ion concentration of an absorption tower, as shown in fig. 1, a slurry pool and an air inlet channel are arranged in a tower body 1;
the detection holes are arranged in two, and are respectively arranged on the two side walls below the tower body 1.
The principle of the technical scheme is as follows: and (3) classifying the slurry water entering the recovery water tank through a wastewater cyclone, and discharging the diluted liquid through dosing treatment. The slurry entering the recovery water tank is respectively gypsum cyclone top flow, filtrate of the belt dehydrator steam-water separator is drained, and cofferdam of the belt dehydrator is drained; the structure of the existing absorption tower is improved.
The beneficial effects of this technical scheme are: the technology of the invention is more fit for widely used absorption towers.
Example 3:
the embodiment provides an online detecting device for chlorine ion concentration of an absorption tower, as shown in fig. 1, a sampling device comprises:
the liquid suction section of the sampling pipeline 2 is fixedly connected in the detection holes at the two sides of the tower body 1, and the liquid suction end of the sampling pipeline 2 penetrates through the detection holes and extends to the bottom of the slurry;
the top end of the sampling tube 4 is fixedly connected with the liquid discharge end of one of the sampling pipelines 2, and the bottom end of the sampling tube is provided with a recovery valve 5 which is connected with a sample recovery device; the inner wall of the sampling tube I4 is provided with a liquid level sensor I;
and the electromagnetic valve 3 is arranged between the sampling pipeline 2 and the sampling tube one 4.
The principle of the technical scheme is as follows: by extracting the sample in the slurry pond into the sampling tube, an environment is provided for the detection process of the two parameters.
The beneficial effects of this technical scheme are: reducing errors that can easily occur when one sample detects two parameters.
Example 4:
the embodiment provides an online detecting device for chlorine ion concentration of an absorption tower, as shown in fig. 1, the detecting device comprises:
the top end of the PH value sensor is fixedly connected with the top end of the sampling tube 4, and the bottom end of the PH value sensor contacts with the slurry sample;
the chloride ion concentration detection unit sets up inside the sampling tube 4, and it includes: the probe is arranged at the bottom of the sampling tube 4 and is used for contacting the slurry sample; and the chloride ion concentration sensor is connected with the probe and obtains the chloride ion concentration value of the slurry sample according to the data acquired by the probe.
The principle of the technical scheme is as follows: the chloride ion sensor is a prior art, which is an instrument for dry analysis of chloride ion content. It is mainly characterized by convenient use and automatic operation. High sensitivity and selectivity. The chloride ion detector adopts an ion selective electrode method, and the water-soluble chloride ion content of inorganic materials such as concrete, gravel, cement, mixing water and the like is rapidly determined at room temperature through the prepared professional software and chemical anti-interference reagent, so that the aim of preventing and controlling the early corrosion of concrete reinforcing steel bars is fulfilled. The chloride ion content tester has light weight, small machine body, convenient carrying for users and suitability for on-site detection.
The method adopts the electrode method principle, the value of chloride ions is digitally displayed, no reagent is needed, the reading value is automatically converted into a unit of milligrams per liter, the full-automatic three-point calibration is realized, the current value is automatically latched after the reading is stable, and the minimum reading of the instrument is 0.1 milligrams per liter. The chloride ion selective electrode is first opened with the discharge valve and the cleaning valve simultaneously, and the chloride ion detector allows the cleaning liquid to clean the reaction tank in a set time. After the purge valve is closed, the sample valve is opened and the drain valve is opened for a further second to flush the sample water off the remaining purge droplets. The discharge valve is then closed and the siphon tube automatically adjusts the sample volume. At this time, the stirring pump is activated and operated for a programmed time. Finally, the values of the ion selection potential and the ion concentration are displayed.
The PH value sensor is the prior art, and comprises a reference electrode and a glass electrode, wherein the potential of the glass electrode depends on the pH value of surrounding solution; and a current meter capable of measuring a minute potential difference in a circuit having a very large resistance. The BPHSCAN series waterproof pen-type pH meter comprises three models of 10/20/30, the instrument is suitable for measuring the pH value of non-high temperature and non-corrosive liquid, and the pH value of the best pH meter can be distinguished into 0.005pH unit by adopting the latest electrode design and solid circuit technology. The basic function of the reference electrode is to maintain a constant potential as a control for measuring various offset potentials. Silver-silver oxide electrodes are the most commonly used reference electrodes in PH meters. The function of the glass electrode is to establish a potential difference that reacts to changes in the hydrogen ion activity of the measured solution. The pH sensitive electrode and the reference electrode are placed in the same solution to form a galvanic cell whose potential is the algebraic sum of the potentials of the glass electrode and the reference electrode. E cell = E reference + E glass, if the temperature is constant, the potential of this cell changes with the pH change of the solution to be measured, but it is difficult to measure the potential generated by the cell in the pH meter acidometer, because its electromotive force is very small, and the impedance of the circuit is very large, 1-100mΩ; thus, the signal must be amplified enough to drive a standard millivoltmeter or millivoltmeter. The function of the ammeter is to amplify the potential of the primary battery by a plurality of times, the amplified signal is displayed by the ammeter, the deflection degree of the ammeter pointer represents the strength of the signal pushed by the ammeter pointer, and in order to meet the use requirement, the dial of the ammeter of the PH meter is carved with a corresponding pH value; the digital PH meter acidometer directly displays the pH value in digital.
The beneficial effects of this technical scheme are: the detection is carried out through the existing mature chloride ion concentration sensor and PH value sensor, so that the detection result is more accurate, and the detection speed is faster.
Example 5:
the embodiment provides an online detecting device for chlorine ion concentration of an absorption tower, as shown in fig. 1, an analysis processing module includes:
the database is connected with the PH value sensor, the chloride ion concentration sensor and the liquid level sensor I, and receives and stores PH value data, chloride ion concentration data and liquid level data; the database contains a preset PH value data range, a chloride ion concentration data range and a liquid level data range;
the analysis unit is used for comparing detection results of different parameters in the database with preset parameter ranges respectively and generating an alarm instruction according to the analysis results; the analysis unit acquires liquid level data of the first liquid level sensor in real time and generates an infusion instruction according to the liquid level data;
the processor is in signal connection with the analysis unit and is used for receiving an alarm instruction and a liquid level instruction; the processor is connected with the electromagnetic valve 3;
the PH value alarm is in signal connection with the processor and is provided with a correct alarm lamp, a high-acid alarm lamp and a high-alkali alarm lamp;
the chloride ion concentration alarm is in signal connection with the processor and is provided with a correct alarm lamp and an error alarm lamp;
the alarm instruction includes:
setting the detected PH value data as A, and setting the preset PH value data range between A0 and A1;
setting the detected chloride ion concentration data as B, and setting the preset chloride ion concentration data range between B0 and B1;
when A0< A < A1 is judged, the analysis unit sends a primary instruction to the processor; when A < A0 is judged, the analysis unit sends a secondary instruction to the processor; when A > A1 is judged, the analysis unit sends a three-level instruction to the processor;
when B0< B < B1 or B < B0 is judged, the analysis unit sends a four-stage instruction to the processor; when B > B1 is judged, the analysis unit sends a five-stage instruction to the processor;
the infusion instructions include:
setting the detected liquid level data as C, and setting the preset liquid level data as between C0 and C1;
when judging that C is less than C0, the analysis unit sends a six-level instruction to the processor; when C0< C < C1 or C > C1 is determined, then the analysis unit sends a seven-level instruction to the processor.
The principle of the technical scheme is as follows: receiving detection data through a database, and judging according to preset data in the database; the operating states of the hardware devices are driven by different stages of instructions.
The beneficial effects of this technical scheme are: the real-time on-line detection is realized, the problems of long period, slow time and large labor capacity caused by personnel sampling detection are avoided, and the reaction speed of each hardware when receiving the instruction is ensured.
Example 6:
the embodiment provides an online detecting device for chloride ion concentration of an absorption tower, as shown in fig. 1, when a processor receives a first-level instruction, the processor drives a correct alarm lamp of a PH value alarm to be turned on, and drives a recovery valve 5 to be opened;
when the processor receives the second-level instruction, the high-acid alarm lamp of the PH value alarm is driven to be turned on, and the recovery valve 5 is driven to be opened;
when the processor receives the three-level instruction, the high-alkali alarm lamp of the PH value alarm is driven to be turned on, and the recovery valve 5 is driven to be opened;
when the processor receives the fourth-level instruction, the processor drives a correct alarm lamp of the chloride ion concentration alarm to be turned on, and drives the recovery valve 5 to be opened;
when the processor receives the five-level instruction, driving an error alarm lamp of the chloride ion concentration alarm to light up and driving the recovery valve 5 to open;
when the processor receives a six-level instruction, the electromagnetic valve 3 is driven to be opened, and the recovery valve 5 is driven to be closed;
the processor, upon receiving the seven-stage instruction, drives the solenoid valve 3 to close and drives the recovery valve 5 to close.
The beneficial effects of this technical scheme are: the working states of the recovery valve, the alarm and the extraction pump are controlled through the first-level, second-level, third-level, fourth-level, fifth-level, sixth-level and seventh-level instructions, so that the reliability and the transparency of the system are improved.
Example 7:
the embodiment provides an online detecting device for chlorine ion concentration of an absorption tower, as shown in fig. 1, the sample recovering device comprises:
an absorption tower drainage pit 10, which is arranged below the detection device and is used for receiving the detected slurry sample, and a recovery pipeline II 11 is arranged between the absorption tower drainage pit 10 and the tower body;
a recovery pipeline I6, the liquid inlet end of which is connected with a recovery valve 5 at the corresponding side, and the liquid outlet end of which is arranged in a drainage pit 10 of the absorption tower;
a filter assembly 7 disposed in the first recovery line 6 for filtering the slurry sample through a filter screen;
the recovery pump 9 is arranged in the second recovery pipeline 11 and is controlled to act through the liquid level interlocking component; the liquid level interlocking assembly comprises a liquid level sensor II, a liquid level detector and an alarm display, wherein the liquid level sensor II and the liquid level detector are respectively arranged in the absorption tower drainage pit 10 and the tower body 1 and are connected with an alarm display line so as to realize advanced alarm on the high and low liquid levels of the absorption tower drainage pit 10 and the tower body 1; the recovery pump 9 is connected with an alarm display. Driving the recovery pump to work when the slurry in the drainage pit 10 of the absorption tower reaches a specified value;
a flushing assembly, which is disposed above the sampling tube 4, and includes a water tank 20, a high-pressure pump 21, and a nozzle 22; a flushing pipeline 23 is arranged between the water tank and the nozzle, and the nozzle penetrates through the top plate of the sampling tube 4; the flushing assembly is electrically connected to the recovery valve 5, which works in synchronization with the recovery valve 5.
The beneficial effects of this technical scheme are: the recycling pump is added on the recycling pipeline, and the recycling pump is driven to work through instructions received by the processor, so that the purpose that the slurry sample returns to the slurry pool is achieved.
Example 8:
the embodiment provides an online detecting device for chlorine ion concentration of an absorption tower, as shown in fig. 1, the inside of a tower body 1 further comprises:
the concentration reducing device is in signal connection with the processor; the concentration reducing device comprises a dosing box and a second electromagnetic valve, and silver nitrate crystals are arranged in the dosing box; when the processor receives the fourth-level instruction, the second electromagnetic valve is driven to be closed; when the processor receives a five-level instruction, the electromagnetic valve II is driven to open, silver nitrate crystals are put into the slurry pool, and react with hydrogen chloride in the slurry to generate silver chloride sediment and nitric acid;
the PH value adjusting device is in signal connection with the processor; the PH value reducing device is arranged at the bottom of the slurry and comprises a first dosing tank, a second dosing tank, a first valve and a second valve; when the processor receives a first-level instruction, the valve is kept closed; when the processor receives the second-level instruction, the valve I is driven to be opened, alkaline solution in the first dosing tank is released, and when the processor receives the first-level instruction, the valve I is recovered to be closed; when the processor receives the third-level instruction, the valve II is driven to open, the acid solution in the dosing tank II is released, and when the processor receives the first-level instruction, the valve I is recovered to be closed.
The principle of the technical scheme is as follows: silver nitrate crystal is easy to dissolve in water, and has chemical reaction with chloride ions in the slurry pool, and the reaction formula is:
Ag++Cl-＝＝AgCl↓；
taking hydrogen chloride as an example, the slurry contains the following reaction formula:
agno3+hcl= hno3+agcl ∈; further forming a precipitate, and cleaning the precipitate at regular time by a worker after the precipitation is finished;
the reaction of the alkaline solution and the acidic solution is the chemical reaction of hydrogen ions in the prior art, and the components of the two solutions are not fixed, so long as the alkaline and the acidic conditions are met.
The beneficial effects of this technical scheme are: by adding silver nitrate crystals, alkaline solution and acidic solution into the slurry tank, chloride ions can be effectively precipitated, and the pH value in the precipitation process can be neutralized.
Example 9:
the embodiment provides an online detection device for chloride ion concentration of an absorption tower, as shown in fig. 1, a database draws a function graph of detection results of the same parameter; displaying the function curve graph through a display screen; and predicting the increasing and decreasing trend of the concentration of chloride ions and the PH value in the absorption tower by calculating the slope of the curve.
The beneficial effects of this technical scheme are: and predicting the chloride ion concentration and PH value trend in the absorption tower by calculating the slope and the steepness of the function curve image, and predicting the exceeding time.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An on-line detecting device for chlorine ion concentration of an absorption tower is characterized by comprising a tower body (1);
the sampling device is connected to the bottom end of the tower body (1) and is used for obtaining a slurry sample in the tower body (1);
the detection device is connected with the sampling device and is used for detecting the PH value and the chloride ion concentration of the sample;
the analysis processing module is in signal connection with the sampling device and the detection device and is used for controlling the work of the sampling device and analyzing and processing the detection result;
and the sample recovery device is connected with the analysis processing module and is used for recovering the sample.
2. The online detection device for chloride ion concentration of an absorption tower according to claim 1, wherein a slurry pool and an air inlet channel are arranged in the tower body (1);
and the detection holes are arranged on two side walls below the tower body (1).
3. An on-line detection apparatus for chloride ion concentration in an absorption tower according to claim 2, wherein said sampling means comprises:
the liquid suction section of the sampling pipeline (2) is fixedly connected in the detection holes at two sides of the tower body (1), and the liquid suction end of the sampling pipeline (2) penetrates through the detection holes and extends to the bottom of the slurry;
the top end of the sampling tube (4) is fixedly connected with the liquid discharge end of one of the sampling pipelines (2), the bottom end of the sampling tube is provided with a recovery valve (5), and the recovery valve is connected with the sample recovery device; the inner wall of the first sampling tube (4) is provided with a first liquid level sensor;
and the electromagnetic valve (3) is arranged between the sampling pipeline (2) and the first sampling tube (4).
4. An on-line detection apparatus for chloride ion concentration in an absorption column according to claim 3, wherein said detection apparatus comprises:
the top end of the PH value sensor is fixedly connected with the top end of the sampling tube (4), and the bottom end of the PH value sensor contacts with the slurry sample;
the chloride ion concentration detection unit is arranged inside the sampling tube (4), and comprises: the probe is arranged at the bottom of the sampling tube (4) and is used for contacting a slurry sample; and the chloride ion concentration sensor is connected with the probe and obtains the chloride ion concentration value of the slurry sample according to the data acquired by the probe.
5. The online detection device for chloride ion concentration in an absorption tower according to claim 4, wherein the analysis processing module comprises:
the database is connected with the PH value sensor, the chloride ion concentration sensor and the liquid level sensor I, and receives and stores PH value data, chloride ion concentration data and liquid level data; the database contains a preset PH value data range, a chloride ion concentration data range and a liquid level data range;
the analysis unit is used for comparing detection results of different parameters in the database with preset parameter ranges respectively and generating an alarm instruction according to the analysis results; the analysis unit acquires liquid level data of the first liquid level sensor in real time and generates an infusion instruction according to the liquid level data;
the processor is in signal connection with the analysis unit and is used for receiving an alarm instruction and a liquid level instruction; the processor is connected with the electromagnetic valve (3);
the PH value alarm is in signal connection with the processor and is provided with a correct alarm lamp, a high-acid alarm lamp and a high-alkali alarm lamp;
the chloride ion concentration alarm is in signal connection with the processor and is provided with a correct alarm lamp and a wrong alarm lamp;
the alert instruction includes:
setting the detected PH value data as A, and setting the preset PH value data range between A0 and A1;
setting the detected chloride ion concentration data as B, and setting the preset chloride ion concentration data range between B0 and B1;
when A0< A < A1 is judged, the analysis unit sends a primary instruction to the processor; when A < A0 is judged, the analysis unit sends a secondary instruction to the processor; when A > A1 is judged, the analysis unit sends a three-level instruction to the processor;
when B0< B < B1 or B < B0 is judged, the analysis unit sends a four-stage instruction to the processor; when B > B1 is judged, the analysis unit sends a five-stage instruction to the processor;
the infusion instructions include:
setting the detected liquid level data as C, and setting the preset liquid level data as between C0 and C1;
when judging that C is less than C0, the analysis unit sends a six-level instruction to the processor; when C0< C < C1 or C > C1 is determined, then the analysis unit sends a seven-level instruction to the processor.
6. The online detection device for chloride ion concentration of an absorption tower according to claim 5, wherein the processor drives a correct alarm lamp of the PH value alarm to be turned on and drives the recovery valve (5) to be opened when receiving the first-level instruction;
when the processor receives the secondary instruction, the processor drives a high-acid alarm lamp of the PH value alarm to be turned on, and drives the recovery valve (5) to be opened;
when the processor receives the three-level instruction, the processor drives a high-alkali alarm lamp of the PH value alarm to be turned on, and drives the recovery valve (5) to be opened;
when the processor receives the four-level instruction, the processor drives a correct alarm lamp of the chloride ion concentration alarm to be turned on, and drives the recovery valve (5) to be opened;
when the processor receives the five-level instruction, driving an error alarm lamp of the chloride ion concentration alarm to light up and driving the recovery valve (5) to open;
when the processor receives the six-level instruction, the electromagnetic valve (3) is driven to be opened, and the recovery valve (5) is driven to be closed;
and when the processor receives the seven-stage instruction, the electromagnetic valve (3) is driven to be closed, and the recovery valve (5) is driven to be closed.
7. The apparatus for on-line detection of chloride ion concentration in an absorption column according to claim 6, wherein said sample recovery means comprises:
the absorption tower drainage pit (10) is arranged below the detection device and is used for receiving the detected slurry sample, and a recovery pipeline II (11) is arranged between the absorption tower drainage pit (10) and the tower body;
a first recovery pipeline (6) with a liquid inlet end connected with the recovery valve (5) at the corresponding side and a liquid outlet end arranged in the drainage pit (10) of the absorption tower;
a filter assembly (7) which is arranged in the first recovery pipeline (6) and filters the slurry sample through a filter screen;
a recovery pump (9) which is arranged in the second recovery pipeline (11) and is controlled to act through a liquid level interlocking component; the liquid level interlocking assembly comprises a liquid level sensor II, a liquid level detector and an alarm display, wherein the liquid level sensor II and the liquid level detector are respectively arranged in the absorption tower drainage pit (10) and the tower body (1) and are connected with the alarm display through a circuit so as to realize advanced alarm on the high liquid level and the low liquid level of the absorption tower drainage pit (10) and the tower body (1); the recovery pump (9) is connected with the alarm display. When the slurry in the drainage pit (10) of the absorption tower reaches a specified value, driving a recovery pump to work;
the flushing assembly is arranged above the sampling tube (4) and comprises a water tank (20), a high-pressure pump (21) and a nozzle (22); a flushing pipeline (23) is arranged between the water tank and the nozzle, and the nozzle penetrates through the top plate of the sampling tube (4); the flushing assembly is electrically connected with the recovery valve (5), and synchronously works with the recovery valve (5).
8. The online detection device for chloride ion concentration of an absorption tower according to claim 6, wherein the tower body (1) further comprises:
a concentration reducing device in signal connection with the processor; the concentration reducing device comprises a dosing box and a second electromagnetic valve, and silver nitrate crystals are arranged in the dosing box; when the processor receives a four-level instruction, the second electromagnetic valve is driven to be closed; when the processor receives a five-level instruction, the second electromagnetic valve is driven to open, and silver nitrate crystals are put into the slurry pool to react with hydrogen chloride in the slurry to generate silver chloride sediment and nitric acid;
the PH value adjusting device is in signal connection with the processor; the PH value reducing device is arranged at the bottom of the slurry and comprises a first dosing tank, a second dosing tank, a first valve and a second valve; when the processor receives a first-level instruction, the valve is kept closed; when the processor receives the second-level instruction, the valve I is driven to be opened, alkaline solution in the dosing tank I is released, and when the processor receives the first-level instruction, the valve I is recovered to be closed; when the processor receives the third-level instruction, the valve II is driven to open, the acid solution in the dosing tank II is released, and when the processor receives the first-level instruction, the valve I is recovered to be closed.
9. The online detection device for chloride ion concentration of an absorption tower according to claim 5, wherein the database draws a function graph of the detection result of the same parameter; displaying the function curve graph through a display screen; and predicting the increasing and decreasing trend of the concentration of chloride ions and the PH value in the absorption tower by calculating the slope of the curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310029584.4A CN116202815A (en) | 2023-01-09 | 2023-01-09 | On-line detecting device for chloride ion concentration of absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310029584.4A CN116202815A (en) | 2023-01-09 | 2023-01-09 | On-line detecting device for chloride ion concentration of absorption tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116202815A true CN116202815A (en) | 2023-06-02 |
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ID=86516572
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310029584.4A Pending CN116202815A (en) | 2023-01-09 | 2023-01-09 | On-line detecting device for chloride ion concentration of absorption tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116202815A (en) |
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2023
- 2023-01-09 CN CN202310029584.4A patent/CN116202815A/en active Pending
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