449 results about "PH meter" patented technology

The invention relates to the technical field of water treatment equipment, and provides a water quality PH monitoring method and device, water treatment equipment and a storage medium, a direct basis is provided for subsequent PH value calculation by directly obtaining a first soluble substance content value at the upstream of an alkaline filter material in the water treatment equipment and a second soluble substance content value at the downstream of the alkaline filter material. A target soluble substance content difference value is calculated on the basis of the second soluble substance content value and the first soluble substance content value, the target soluble substance content difference value represents the variable quantity of the soluble substance content in the water quality treatment process, and the target soluble substance content difference value can be used for monitoring the change of the water quality. And finally, performing calculation based on the target soluble substance content difference value to obtain the water quality PH value, thereby greatly improving the accuracy of water quality monitoring. In addition, the use of an expensive PH meter is avoided, and the water quality monitoring cost is reduced.

The invention provides a control system for preparing manganous-manganic oxide from impurity-containing manganese liquid. Comprising a synthesis kettle; the feeding metering pump set comprises a liquid caustic soda metering pump and a pre-synthesis liquid metering pump; the valve group comprises a discharge valve, a steam valve and a pure water valve; the pH meter is arranged on the synthesis kettle; a first flow meter; a second flow meter; the M01 stirring motor is arranged on the synthesis kettle and is used for mixing solutions in the kettle; the M02 stirring motor is arranged on the overflow liquid receiving tank; the air blower is arranged on a pipeline connected with the synthesis kettle; the first liquid level meter is arranged on the synthesis kettle; the second liquid level meter is arranged on the overflow liquid receiving tank; and the thermometer is arranged on the synthesis kettle and is used for monitoring the temperature of the solution in the synthesis kettle. The system further comprises a central controller. By means of the system, the feeding state of the synthesis kettle can be automatically regulated and controlled, monitoring, debugging and alarming of the preparation process are facilitated, meanwhile, feeding of feeding liquid is stable, the temperature of the synthesis kettle is accurately controlled, and the fluctuation range of the pH value is small.

The invention discloses a regulation and control system and method of a pH meter in a waste lithium battery recovery process, and relates to the technical field of waste battery recovery treatment. The system comprises a central control module, a liquid caustic soda adjusting device and a liquid acid adjusting device, wherein a pH meter measures the pH value of a leaching solution of a leaching-stage reaction kettle in a waste lithium battery recycling process in real time; the central control module compares the pH value, measured in real time, of the leaching liquid in the leaching-stage reaction kettle with the pH value preset range of the leaching stage, acid liquid or alkali liquid is added into the leaching-stage reaction kettle according to the comparison result, and the pH value of the leaching liquid is adjusted to be within the pH value preset range of the leaching stage; the central control module can also identify interference factors measured by the pH meter and compensate the slope according to the current temperature so as to compensate the pH value, measured by the pH meter, of the leachate. According to the method, accurate control over the pH value in the leaching process can be effectively achieved, the recovery efficiency and quality of the waste lithium batteries are improved, and the production cost is reduced.

The invention provides a method for accurately regulating and controlling the water quality of cold water in a rotor of a phase modifier, which comprises the following steps: accurately regulating and controlling the water quality of the cold water in the rotor through a bipolar membrane reactor, a rectifier and a control system; the anion receiving liquid circularly circulates between the anion receiving chamber and the anion receiving box, the rotor internal cooling water circularly circulates between the rotor internal cooling water chamber and the raw water tank, and the phase modifier rotor internal cooling water can be introduced into the raw water tank through a bypass and returns to the rotor internal cooling water system from the raw water tank; the water quality of rotor internal cooling water introduced into the raw water tank is monitored in real time through an online pH meter and an online conductivity meter of an internal cooling water circulation pipeline, and parameters of applying direct current to an operation membrane stack are regulated and controlled through a rectifier. According to the invention, the controllability is stronger, the stability is better, the water quality of the cold water in the rotor can be accurately regulated and controlled and recycled, an ion exchanger is not required to be arranged for ion exchange desalination, the energy consumption is low, and the pollution is avoided.

The invention belongs to the technical field of carbon capture, and particularly relates to a method and a device for measuring the concentration of amine in a carbon capture absorbent. The determination method comprises the following steps: (1) calibrating the consistency of a reference amine solution and a pH meter; (2) judging a potentiometric titration end point; and (3) determining the amine concentration of the carbon capture absorbent. The detection method is simple and feasible, the determination device is simple in structure and convenient to operate, and the concentration of the amine in the online running carbon capture absorbent can be monitored, so that the effective running of the carbon capture device is ensured, and the problem that determination cannot be performed due to the fact that a sample is dark in color and cannot be distinguished at a titration end point in a color indicator method is solved.

The invention discloses integrated equipment for preparing sodium fluosilicate through photovoltaic wastewater resource utilization, and particularly relates to the field of photovoltaic wastewater, the integrated equipment comprises a filtering unit, a chemical adding unit, a reaction unit, a centrifugal unit and an online detection system, the filtering unit comprises a raw water tank and a precision filter, the raw water tank is connected with the precision filter through a pipeline, and the chemical adding unit is connected with the reaction unit through a pipeline; an online hydrofluoric acid concentration detector is arranged at the water outlet end of the precision filter; the online detection system comprises a fluorine ion detector, a pH meter module and a PLC (Programmable Logic Controller) control unit, and the PLC control unit is used for quantitatively conveying filtered wastewater to a reaction tank in the reaction unit through a water pump according to the detected hydrofluoric acid concentration. According to the equipment, efficient resource utilization of photovoltaic wastewater is realized through precise filtration, dosing and reaction control, and a sodium fluosilicate product is generated.

The invention discloses a detector for garden soil quality detection, and belongs to the technical field of garden soil detection.The detector comprises a detection bottle, the surface of the detection bottle is movably connected with a bottle cap, a PH meter is arranged in the bottle cap, the surface of the bottle cap is fixedly connected with a liquid adding pipe, and the surface of the liquid adding pipe is movably provided with a pipe cap; a working rod is connected to the interior of the bottle cap through a reciprocating assembly, mixing blades are fixedly connected to the surface of the working rod, and a lower connecting rod is fixedly connected to the inner wall of the bottle cap. When the detector for garden soil quality detection works, a soil sample and a reagent are poured into a detection bottle, then a bottle cap is screwed, a pressing plate on the surface of the bottle cap is pressed, then a pressing rod pushes a stress plate, and at the moment, the stress plate, a working rod and a mixing blade rotate in the detection bottle in a reciprocating manner under the action of the pressing rod and a torsion spring; compared with one-way rotation of the mixing blades, the reciprocating rotation mixing blades can better mix the materials, so that the detection result of the PH meter is more accurate.

The utility model provides a rapid correction pH meter which comprises a machine body, a display control screen is fixedly installed on the upper surface of the machine body, a liquid storage unit is arranged on one side of the display control screen, an electrode is connected to the surface of one side of the machine body, a lifting mechanism is arranged between the electrode and the machine body, and a correction groove is formed in the lower side of the electrode. Through the use of the liquid storage unit and the arrangement of a plurality of liquid storage beakers on the upper surface of the machine body, correction standard solutions with different pH values, distilled water for cleaning, electrode protection liquid and the like can be respectively placed, the use is convenient, through the use of the liquid extraction mechanism, liquid extraction pipes are placed in different liquid storage beakers, the operation can be performed through a peristaltic pump, and the operation is convenient. The pH standard correction liquid, distilled water, electrode protection liquid and the like in the liquid storage unit are discharged into the correction tank through the guide pipe, the correction tank and the electrodes in the correction tank can be blow-dried through the use of the blow-drying mechanism and the work of the air heater, and the correction time is shortened.

The invention belongs to the technical field of liquid-phase mineralization carbon sequestration, and particularly relates to a bubbling bed device and method for liquid-phase mineralization carbon sequestration of alkaline solid waste, and the device comprises a gas-liquid-solid bubbling bed reactor body and a measuring device; wherein the bubbling bed reactor body comprises a reaction material inlet / outlet, a flow observation window and the like; the measuring device comprises a CO2 sensor, a pressure sensor, a pH meter, a conductivity probe, a flow image acquisition device, a data acquisition card and the like; important parameters of flow, mass transfer and reaction in a liquid-phase mineralization carbon sequestration reaction flow are obtained by monitoring data such as a reaction flow image, pressure pulsation data, pH, conductivity and CO2 concentration in exhaust gas after reaction in real time; the operation performance of the bubbling bed reactor is regulated and controlled by obtaining important parameters of the reaction flow, and the efficient liquid-phase mineralization carbon sequestration process is achieved.

The invention relates to the technical field of mine acid wastewater treatment, in particular to a method for treating acid wastewater through a high-density slurry method and a control system. The method specifically comprises the following steps: executing the following operations through a control device: receiving a real-time pH value fed back by a pH meter in a reaction device and liquid level data of a liquid level meter; the real-time pH value and the liquid level data are input into a preset reflux ratio calculation model, and the reflux ratio calculation model calculates the lime adding amount, the flocculating agent adding amount and the sludge reflux flow through a simulated annealing algorithm; and controlling the operation parameters of the delivery pump, the reflux pump and the stirring device according to the calculation result, and maintaining the pH value in the reaction device within a set interval. The pH value and liquid level data are monitored in real time, the lime adding amount, the flocculating agent adding amount and the sludge backflow flow are dynamically optimized in combination with the simulated annealing algorithm, and the pH value in the reaction device is maintained; the heavy metal concentration reaches the standard; the effluent quality is ensured to meet the standard; and normal operation of treatment facilities is ensured.

The invention discloses a material mixer for building construction engineering, which relates to the technical field of building construction equipment. The mixer comprises a mounting base, a mixer body connected to the mounting base and a feed frame connected to the mixer body. The feed frame is provided with a water quality regulating component, and the water quality regulating component comprises a water storage tank connected to the feed frame, and the water storage tank is connected to a plurality of acid and alkali solution storage tanks. In the invention, a pH meter arranged in the water storage tank can be used to measure the pH value of water in the water storage tank, and the pH meter can convert the potential difference measured by the water storage tank into a current difference. When the current reaches a set value, the corresponding electromagnet can be energized to generate magnetism and start working, and pour out acid and alkali solutions of different concentrations to neutralize the pH value in the water, thereby ensuring that the water mixed with cement and the like will not show strong acidity or alkalinity. The arrangement is convenient for automatically adjusting the pH value in the water with high precision.

The invention relates to the technical field of water treatment equipment, provides a water quality PH monitoring method and device, water treatment equipment and a storage medium, and provides a direct basis for subsequent PH value calculation by directly obtaining the content values of soluble substances on the upstream and downstream of an alkaline filter material in the water treatment equipment. A soluble substance content difference value is calculated on the basis of the upstream and downstream soluble substance content values, and the soluble substance content difference value represents the variable quantity of the soluble substance content in the water quality treatment process and can be used for monitoring the change of the water quality. As the temperature of water can influence the ionization degree and the activity of dissolved substances, and thus the PH value is influenced, the change condition of water quality can be reflected more accurately by comprehensively considering the two key factors of the water flow temperature and the difference value of the content of the dissolved substances, and the accuracy and reliability of PH value calculation are improved. In addition, the use of an expensive PH meter is avoided, and the water quality monitoring cost is reduced.

The utility model belongs to the technical field of heat exchanger cleaning, and discloses a heat exchanger cleaning device which comprises a box body, a circulating system and an acidity meter, acid liquid is contained in the box body, the circulating system is connected with the box body and a heat exchanger and can enable the acid liquid in the box body to enter the heat exchanger in a circulating mode, and the acidity meter comprises a probe and a display screen. The probe is arranged in the box body and used for detecting the concentration of the acid liquid in the box body, and the display screen is used for displaying the real-time acid concentration of the acid liquid. According to the heat exchanger cleaning device provided by the utility model, the acid liquid is used for circularly cleaning the heat exchanger, so that the heat exchanger is prevented from being disassembled and assembled, and the working difficulty of workers is reduced; it is ensured that the acid liquid can chemically react with scale every time the acid liquid enters and exits the heat exchanger, effective cleaning is achieved every time the acid liquid enters and exits the heat exchanger, and the cleaning efficiency of the heat exchanger is effectively improved.

The invention provides an analysis method for measuring the pH value of an aqueous solution by using methyl red, and belongs to the technical field of pH value measurement. The analysis method comprises the following steps: mixing a standard solution and a methyl red solution with different pH values to obtain a color developing solution, then detecting an absorbance curve of the color developing solution by utilizing a detection device, reading absorbance, and drawing a working curve by taking the pH value of the color developing solution as a horizontal coordinate x and the absorbance as a vertical coordinate y; mixing a to-be-detected water sample and the methyl red solution, detecting to obtain an absorbance value, substituting the absorbance value into the working curve, calculating the pH value of the to-be-detected water sample, and displaying the pH value of the to-be-detected water sample. According to the analysis method, the acid-base indicator is used as an accurate pH meter, and the pH value of the solution can be measured on line, so that the application range of the acid-base indicator is widened.

The invention discloses a hot dry rock heat removal open hole well wall physical and chemical reaction simulation device which comprises a constant-temperature heating water tank, the constant-temperature heating water tank is communicated with an acid-base water storage tank through a first pipeline, a corrosion-resistant pump and a stop valve are installed on the first pipeline, and a detection head of an industrial PH meter is connected with the constant-temperature heating water tank. The constant-temperature heating water tank is communicated with an inlet of the flushing device through a second pipeline, an adjustable booster pump and a radar flow meter are mounted on the second pipeline, an outlet of the flushing device is communicated with the constant-temperature cooling water tank through a third pipeline, and the constant-temperature heating water tank is communicated with the constant-temperature cooling water tank through a fourth pipeline; four rock sample cavities are circumferentially distributed in the washing device, the four rock sample cavities are distributed in a cross structure and used for containing rock samples, a water flow channel is defined by the four rock samples, water in the second pipeline is discharged from the third pipeline through the water flow channel, and a heating resistor is wound around the periphery of the washing device. And the heating resistor is used for supplementing heat to the rock sample.

AI-Powered PH Meter with Smart Alerts

The invention discloses an automatic Fenton dosing system, relates to the technical field of wastewater treatment, and aims at solving the problem that an existing Fenton system needs to easily cause waste of chemicals and human resources. The technical scheme is characterized in that the system comprises a bottom plate, an automatic dosing control cabinet, a wastewater treatment device, a chemical dosing device, an aeration device, a stirring device, a first pH meter and a second pH meter; by arranging the automatic dosing control cabinet, the first pH meter and the second pH meter, the pH change of water quality can be detected in real time, and information is transmitted to the automatic dosing control cabinet, so that the automatic dosing control cabinet controls the dosing device to add chemicals into the wastewater treatment device according to the information feedback condition; and the dosing amount of the medicament is regulated in a targeted manner, so that the conventional manual dosing control manner is replaced, the dosage of the medicament can be accurately controlled, the medicament loss is reduced, the manpower resource is saved, and the operation cost of a sewage plant is reduced.

The utility model discloses an efficient energy-saving acid supplementing device for laboratory acid gas-liquid mixing reaction, which comprises a reaction tank, the top of the reaction tank is connected with a gas delivery pipe and an acid burette, the lower end of the gas delivery pipe extends into the reaction tank, and a stirring mechanism is arranged at the lower end of the gas delivery pipe. A knob of the acid burette is in transmission connection with the rotary steering engine, a pH meter is arranged in the reaction tank and is electrically connected with the display screen, and the rotary steering engine and the display screen are both electrically connected with the controller; according to the scheme, reaction liquid is uniformly stirred while reaction gas is introduced; reaction gas is uniformly distributed in reaction liquid, so that the mass transfer efficiency and the reaction efficiency are improved; meanwhile, an automatic pH regulation and control system is formed by the acid burette, the rotary steering engine, the pH meter and the controller, so that the pH can be automatically and continuously monitored and controlled; in addition, according to the scheme, gas kinetic energy can be recycled, and therefore the energy utilization efficiency is improved.

The application discloses an intelligent pH adjusting device for inner cooling water and an application method thereof. The intelligent adjusting device comprises a pH meter before dosing, a conductivity meter before dosing, a control assembly, a metering pump, a lye tank, a conductivity meter after dosing and a pH meter after dosing. The output ends of the pH meter before dosing, the conductivity meter before dosing, the conductivity meter after dosing and the pH meter after dosing are connected with the control assembly. The output end of the lye tank is communicated with a circulating loop of the inner cooling water. The metering pump is installed on the output pipeline of the lye tank and the control end thereof is connected with the control assembly. The application can realize closed-loop control of adding lye in the circulating loop of the inner cooling water based on the pH values before and after dosing and the conductivities before and after dosing, can ensure the accurate amount of lye added when the water quality fluctuates, avoids the problems that the actual controlled pH value does not participate in control, the lye is not accurately added when the water quality fluctuates and the operation and maintenance rely on the experience of workers, and thus realizes precise intelligent automatic control of the pH of the inner cooling water.

The utility model relates to a jacket type reaction kettle. Comprising a kettle body and a jacket sleeved on the peripheral side of the kettle body, the kettle body is vertically arranged, a liquid outlet is formed in the bottom of the kettle body, and a cleaning opening, a feeding opening, a thermometer opening, a standby opening, a chlorine opening, a nitrogen opening, a DI inlet, a pH meter opening, a liquid level meter opening and an exhaust opening are further formed in the kettle body; a jacket inlet is formed in the upper part of the jacket; one part of DI water in the DI water tank enters the kettle body, the other part of DI water is connected with the cleaning port, the rest part of DI water enters the jacket, and the jacket outlet is connected with the DI water tank; the chlorine water tank is connected with the chlorine opening; the nitrogen tank is connected with the nitrogen port; a spin dryer is connected with the liquid outlet; and an exhaust pipeline is mounted on the exhaust port. The reaction kettle is suitable for various chemical reaction processes, and can meet the complex process requirements of heating, heat preservation, cooling and the like in the reaction process.

The utility model relates to a PH meter protection device which comprises a protection shell with two open ends, the protection shell comprises a first protection sleeve and a second protection sleeve which are coaxially arranged and communicated, and a fixing device used for fixing a PH meter on the protection shell is installed at the end, away from the second protection sleeve, of the first protection sleeve. A plurality of groups of liquid flowing ports are formed in the first protective sleeve in the length direction of the first protective sleeve, each group of liquid flowing ports comprises a plurality of through holes distributed in the circumferential direction of the first protective sleeve, and when the PH meter protective sleeve is used, the PH meter protective sleeve can play a role in protecting a PH meter, so that the service life of the PH meter can be prolonged; and secondly, the measurement accuracy of the PH meter in the use process can be ensured.

The utility model discloses an automatic backwashing PH detector, and relates to the technical field of PH instrument maintenance devices. Comprising a PH meter sensor base, the PH meter sensor base is provided with a threaded hole for mounting a PH sensor, and the thread is sealed; a drain pipe, a clear water pipe and a sewage pipe are mounted on the PH sensor base in a chuck joint manner, and the mounting positions are sealed; one end of the sewage pipe is connected with the PH sensor base, and the other end of the sewage pipe is arranged in a sewage pipeline with a filter screen; and a drain outlet is formed in the bottom of the PH sensor base. According to the utility model, the filter screen prevents sundries from damaging the probe part of the PH sensor and affecting the measurement result; when the water drainage switch valve is closed, the clear water switch valve I and the clear water switch valve II are opened, clear water enters the PH sensor base through the clear water pipeline and flows into the sewage pipeline, the PH sensor probe and the filter screen are backwashed, and the service life of the PH sensor is prolonged.

1. Name of the Design Product: pH Detector. 2. Use of the Design Product: For detecting pH value. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective view.

The utility model provides a PH meter measurement buffer system capable of being applied to slurry fluid. The PH meter measurement buffer system comprises a buffer tank body and a PH meter arranged at the top of the buffer tank body. A liquid inlet pipeline, a liquid outlet pipeline and a flushing pipeline are arranged on the side wall of the buffer tank body. And the height of the liquid inlet pipeline is lower than that of the liquid outlet pipeline. And the height of the lowest point of the PH meter is lower than that of the highest point of the liquid outlet pipeline. And a blow-off pipeline is arranged at the bottom of the buffer tank body. The caliber of the buffer tank body is DN350 to DN450, and the height of the buffer tank body is 500mm. The PH meter is cleaned by arranging the flushing pipeline and does not need to be detached from the buffer tank body, so that the PH meter is convenient to maintain. Meanwhile, the caliber of the buffer tank body is DN350 to DN450, the flow speed is reduced, a good buffer effect is achieved, and the PH meter is prevented from being impacted and damaged due to the fact that the pressure of slurry in the buffer tank body is too large in cooperation with the liquid outlet pipeline and the blow-off pipeline.

The invention provides a method and a system for accurately controlling the pH value of single-tank outlet light salt brine in multiple groups of electrolytic tanks, comprising multiple groups of electrolytic tanks, a tank inlet brine branch pipe is connected with a diluted hydrochloric acid branch pipe, the diluted hydrochloric acid branch pipe is provided with a diluted hydrochloric acid flowmeter and a diluted hydrochloric acid regulating valve, and the tank outlet light salt brine branch pipe is connected with a light salt brine sampling branch pipe. Each light salt brine sampling branch pipe is provided with a light salt brine sampling program control valve and a simulation assignment module, the light salt brine sampling branch pipes are connected with a light salt brine sampling header pipe, and the light salt brine sampling header pipe is provided with a sampling adjusting valve, a sampling flow meter and a pH meter; the diluted hydrochloric acid flow meter, the diluted hydrochloric acid adjusting valve, the light salt brine sampling program control valve, the sampling adjusting valve, the sampling flow meter and the pH meter are all connected into a DCS system, and the diluted hydrochloric acid adjusting valve adjusts the opening degree according to the detection value of the pH meter. Precise adjustment and control of pH of light salt brine discharged from each single cell in multiple groups of electrolytic cells are realized through a pH meter and a control loop thereof, the anode efficiency and the quality of a liquid caustic soda product are improved, and the production stability is improved.

The utility model discloses a device for automatically lifting and cleaning a pH meter at intervals. The device comprises a detection tank, a lifting rod, a flushing fluid pipeline and a crank-link mechanism, detection liquid is contained in the detection tank, and the pH meter is arranged in the detection tank; the top of the pH meter is connected with the lifting rod; a flushing fluid valve is arranged on the flushing fluid pipeline; one end of the crank-link mechanism is hinged to the end, connected with the pH meter, of the lifting rod, the other end of the crank-link mechanism is fixedly connected with a switch wrench of the flushing fluid valve, and the crank-link mechanism swings to open or close the flushing fluid valve. The device disclosed by the utility model can be used for cleaning the pH meter at regular time, so that the accuracy of a detection result is ensured, and meanwhile, the pH meter can be protected.

To provide a hypochlorous acid water generator capable of stabilizing the pH value of generated hypochlorous acid water.SOLUTION: The control unit 81 calculates a deviation between the pH value of the aqueous solution in the water storage tank 6 detected by the pH meter 7 and the target pH value, determines the amounts of the sodium hypochlorite aqueous solution to be supplied to the raw water flowing through the first conduit 12 and chlorine to be supplied to the raw water flowing through the second conduit 13 so as to bring the calculated deviation close to 0, and supplies the sodium hypochlorite aqueous solution and chlorine.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of PH meter probes, and particularly relates to a PH meter probe, which comprises a main body mechanism including a handle, a connecting line and an electrode bulb. The protection mechanism is arranged on the main body mechanism, the protection mechanism comprises a locking assembly and a protection assembly, the locking assembly is used for controlling the locking state of the protection assembly, an electrode bulb is protected by arranging a protection shell, meanwhile, a hemispherical shell is arranged in the protection shell, and the surface of the electrode bulb is cleaned through the hemispherical shell; wherein the base not only can be used for accommodating the PH meter probe, but also can be matched with the hemispherical shell to clean the PH meter probe, so that the PH meter probe can be automatically cleaned after being inserted into the base every time after being used, and the workload of workers for cleaning the PH meter probe is reduced; and the problem that the measurement accuracy is influenced by different cleaning effects caused by manual difference is solved.

The utility model designs a measuring cell of an industrial pH meter, which comprises a measuring cup and a top cover, and is characterized in that the measuring cup is made of porous alumina ceramics, holes of the porous alumina ceramics are of through hole structures, the hole diameter is 70 microns, the top cover is made of rubber, and a round hole is formed in the center of the top cover. The porous alumina ceramic measuring cup has the advantages that during measurement, hydrogen ions and other soluble ions in measured liquid can penetrate through the through holes, with the diameter of 70 microns, of the porous alumina ceramic measuring cup to enter the cavity of the measuring cup, and most solid particles cannot penetrate through the porous alumina ceramic to enter the cavity of the measuring cup. Due to the fact that direct contact between insoluble substances and the glass electrode is avoided, the purpose of protecting the electrode is achieved on the premise that pH value measurement is not affected. The porous aluminum oxide ceramic has the characteristics of high temperature resistance, corrosion resistance and stable chemical property, can be repeatedly used after being cleaned, and is relatively low in use cost.

The invention discloses a wet desulphurization slurry pH value online data filtering method. According to the method, output values of the two pH meters and increments of the two pH meters in two continuous adjacent time intervals are compared with a fixed state value, and the states of the pH meters are judged. When the pH value is smaller than a verification process state constant value, the verification process is judged; the pH value increments in two continuous adjacent time intervals are both higher than the constant value of the flushing starting state, and it is judged that flushing starting is conducted; when the pH value is higher than a flushing process state constant value, judging as a flushing process; and judging that the flushing is finished when the increments in two continuous adjacent time intervals are both smaller than the constant value of the flushing finishing state. When any one pH meter judges the four states, directly replacing the value of the pH meter with the result output by the other pH meter; otherwise, the pH value is not treated. The finally output pH value is a mean value of the two pH meters after data filtering. The output result of the pH meter is filtered on line by judging the running state of the pH meter in real time, and the automatic control level of wet desulphurization is effectively improved.