58 results about "Alkalinity" patented technology

The invention discloses a control method for stabilizing the alkalinity of blast furnace slag. The method comprises the following steps: collecting blast furnace production data; calculating a blast furnace theoretical alkalinity lag period; establishing a dual-control model of a control model based on the theoretical slag alkalinity under the blast furnace tank and a control model based on the actual slag alkalinity of the blast furnace, and monitoring and analyzing the abnormal fluctuation reason of the actual slag alkalinity; and then targeted alkalinity control is carried out according to the reasons of abnormal fluctuation of alkalinity. According to the method, closed-loop control is achieved from the slag alkalinity fluctuation source and the slag fluctuation reason through the theoretical slag alkalinity and actual slag alkalinity dual-control model, the slag alkalinity fluctuation reason can be judged rapidly and comprehensively, targeted measures are taken for different reasons, the slag alkalinity is stabilized more accurately and rapidly, the blast furnace is kept stable, and the method is suitable for large-scale popularization and application. The steel production quality is improved.

The invention provides a circulating water low-turbidity water quality online control process based on alkalinity control. On-line monitoring equipment including an alkalinity analyzer, a turbidity meter and the like is arranged at key positions such as a water inlet of a circulating water system. The alkalinity analyzer adopts an acid-base titration and potential detection technology, the measurement precision reaches + / -0.01 mmol / L, and data is transmitted at least once per minute. By simulating a multi-working-condition experiment and by means of multiple linear regression and a neural network, an alkalinity and turbidity correlation model is constructed, and the prediction accuracy of the model exceeds 95%. And the central control system performs fusion analysis on water quality parameters by applying algorithms such as fuzzy logic and the like and sends an instruction to the intelligent dosing system. The system is internally provided with an advanced algorithm and can adaptively adjust the dosing of the medicament. Practice shows that the process can stably control turbidity and reduce equipment scaling and medicament consumption cost, and has outstanding advantages in the aspect of circulating water quality control.

The invention provides a method for measuring the total alkalinity of pore water in salt lake water or marine sediments, aiming at the characteristics of huge alkalinity variation range of a salt lake sample and small sample amount of the pore water in the sediments, the traditional step-by-step dilution alkalinity measuring method is complicated to operate, and simple dilution of the sample can change the balance of a water body carbonate system. The accuracy of total alkalinity determination is influenced, and the uncertainty is large. The method for measuring the total alkalinity of the salt lake water with the high total alkalinity range and the marine sediment pore water with the low sample amount can be used for batch measurement of the total alkalinity of the samples, repeated dilution is not needed, one-time rapid measurement is achieved, the sample measurement accuracy is improved, and manpower and material resources are saved. In the method, the alkalinity of the prepared NaOH standard solution is calibrated more accurately based on the standard curve adding method, the effective measurement range can be expanded by adjusting the concentration of the prepared NaOH standard solution, and the method is wide in applicability.

An acid substance (e.g., HCl) generated as the byproduct of an ocean alkalinity enhancement (OAE) process is neutralized using an in-situ acid neutralization subsystem by forcing the acid byproduct through an alkaline formation such that the acid substance is neutralized through interaction with alkaline rocks as the acid byproduct flows from an injection well to a recovery well. A flow rate of acid substance through the rock formation is optimized to (a) maximize the amount of neutralized acid substance, and (b) minimize the amount of residual acid substance at the recovery well. The acid flow rate is adjusted by mixing the acid byproduct with a buffer and / or by a flow control device. Acid neutralization and CO2 capture are combined by forcing CO2 through the alkaline formation to react with divalent ions generated by the acid neutralization process, thereby mineralizing the CO2 in the form of carbonate rocks (e.g., limestone or dolostone).

The invention discloses an acid-base permeation capacity detection device of an acid-base resistant membrane, and relates to the technical field of membrane detection, the acid-base permeation capacity detection device of the acid-base resistant membrane comprises a support, a first detection bottle and a second detection bottle are fixedly installed on the support, and membrane discs are inserted into the first detection bottle and the second detection bottle. An operation table is arranged on one side of the support, a mechanical arm is fixedly installed at one end of the operation table, a clamp is movably connected to the tail end of the mechanical arm, a detection table is installed at the other end of the operation table, and film discs are inserted into notches in a first detection bottle and a second detection bottle to divide the space in the bottles into two parts. Acidic and alkaline solutions are respectively input into the upper half part, penetration detection is carried out under the pressure of the water pump, the acid-base property of the liquid at each position is detected in real time through the detectors at the upper and lower ends of the detection bottle, a real use environment can be simulated by adjusting the output pressure of the water pump and the temperature control part, and the accuracy of a detection result is ensured.

1. Name of the product in this design: Soil Tester. 2. Purpose of this design: For testing soil moisture, acidity, alkalinity, etc. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

1. Name of the Design Product: PH Electrode (Large Bubbles for Fermentation). 2. Use of the Design Product: For testing acidity and alkalinity. 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 present invention relates to a method for determining the partition of naphthenic acids in a system that mimics production water, comprising: (a) mixing, in a mimicking system, an aqueous phase and an oily phase comprising acidic species, varying parameters of pH, salinity, alkalinity as a function of carbonated species, concentration of divalent ions, temperature and / or pressure, under mechanical agitation; (b) collecting samples of the aqueous fraction; and (c) performing titration of the collected aqueous phase samples. The present invention further relates to a production water mimicking system comprising: a mechanical agitation system; a resistant material reactor, comprising a single inlet for aqueous phase, organic phase and sample; a gas inlet controller; a heating and temperature control system; and a pressure relief valve sample collection system.

The invention discloses an on-line automatic monitoring method and system for total alkalinity in water, and relates to the technical field of water quality on-line monitoring. When the current measuring state of the system is a starting state, a sampling unit is controlled to convey a target water sample to a mixed reaction unit based on a preset water sample flow; the reagent unit is controlled to convey a target reagent to the mixed reaction unit; dynamically adjusting the flow rate of the target reagent based on a proportional integral differential control strategy, so that the pH value of a mixed solution formed by mixing the target water sample and the target reagent in the mixed reaction unit fed back by the detection unit in real time is stabilized at a preset endpoint pH threshold value; and determining the total alkalinity of the target water sample based on the flow velocity of the target reagent when the pH value is stable, the concentration of the target reagent and the preset water sample flow. The pH value is stabilized at the titration end point by dynamically adjusting the reagent flow rate, the total alkalinity is calculated according to the reagent flow rate, the water sample flow rate and the reagent concentration during balance, continuous and rapid measurement can be realized, and the reagent consumption is low.

The utility model relates to the technical field of acidity and alkalinity detection, and provides foaming agent acidity and alkalinity detection experimental equipment which comprises an equipment body, sliding plates are connected to the two sides of the equipment body in a sliding mode, protection plates are fixedly connected to the tops of the sliding plates, and by arranging the protection plates, the top of the equipment body can be shielded by the protection plates; under the action of the vertical plate, the two sides of the equipment body can be shielded, so that the equipment body is protected, dust is prevented from falling on the equipment body, when the protection plate needs to be disassembled, the baffle is pulled upwards, the baffle is separated from the sliding plate, the sliding plate can be pulled out, the protection plate can be disassembled, and when the height of the test pen needs to be adjusted, the protection plate can be disassembled. When the control ring is rotated, the connecting plate and the mounting plate can be driven to descend along the vertical rod, and the top of the limiting rod also descends along the top of the vertical rod, so that the height of the test pen is adjusted, and the test pen is controlled to enter the container to detect the foaming agent.

The utility model relates to a monitoring and adjusting device, in particular to a monitoring and adjusting device for a sulfanilic acid buffer solution in total alkali determination. The monitoring and adjusting device for the sulfanilic acid buffer solution in the total alkali determination comprises a sulfanilic acid buffer solution kit, a moving mechanism, a PH induction electrode and the like, the moving mechanism is arranged on one side of the sulfanilic acid buffer solution kit, the PH induction electrode is fixedly connected to the moving mechanism, and the PH induction electrode is fixedly connected to the other side of the sulfanilic acid buffer solution kit. The PH sensing electrode is positioned above the inner bottom of the aminobenzene sulfonic acid buffer solution kit by three to eight centimeters. According to the utility model, a signal is sent to the control panel through the PH sensing electrode, and then an acidic or alkaline solution is conveyed into the aminobenzene sulfonic acid buffer solution kit according to the PH value, so that the PH value of the aminobenzene sulfonic acid buffer solution is adjusted, and the influence of the abnormal PH value of the aminobenzene sulfonic acid buffer solution on a detection result is reduced.

The utility model relates to the technical field of soil acidity and alkalinity determination, in particular to a rapid acidity and alkalinity determination device for soil detection, which comprises a shell and a stirring unit arranged in the shell, a rotating shaft is arranged in the shell in the vertical direction, the axis of the rotating shaft and the axis of the shell are collinear, when the stirring unit operates, the rotating shaft rotates around the axis of the rotating shaft, a plurality of stirring assemblies are arranged on the rotating shaft in the vertical direction, each stirring assembly comprises a plurality of stirring rods, and the stirring rods are evenly distributed around the axis of the rotating shaft. The stirring rod is hinged to the rotating shaft, a control groove is formed in the rotating shaft in the vertical direction, a plurality of lifting discs are movably arranged in the control groove in the vertical direction, and connecting rods hinged to the lifting discs and the hinge rod are arranged between the lifting discs and the hinge rod. According to the utility model, the cleaning efficiency of the measuring device is improved, the measuring speed of the measuring device is further improved, and the accuracy of a measuring result is ensured.

Release apparatus 200 for receiving an ocean alkalinity product 113-OUT from an Ocean Alkalinity Enhancement (OAE) system 100 (or other onshore or floating alkalinity source), and for releasing the alkalinity (base product, e.g., NaOH), e.g., contained in the ocean alkalinity product 113-OUT into an ocean 50 at a maximum safe delivery rate to facilitate atmospheric CO2 reduction and mitigate ocean acidification. Release apparatus 200 includes a diffuser 210 having plenum chamber 212 defining one or more exit ports 214, flow control mechanism 220 that controls a delivery (volumetric flow) rate of the ocean alkalinity product 113-OUT through the exit port(s) 214 into an outfall region 51-1R (i.e., an ocean region (volume of seawater) surrounding the diffuser 210), sensors 230 for measuring seawater parameters (e.g., one or more of ionic composition [hardness], turbidity, pH, alkalinity, DIC, temperature, salinity, current speed and / or direction) in the outfall region 51-1R, and a controller 180 configured to control an operating (actuation) state of the flow control device 220 (e.g., by way of generating and transmitting a flow control signal 183) in accordance with the measured seawater parameters (i.e., provided by way of sensor signals 182). Plenum chamber 212 is anchored or otherwise maintained at an outfall location 51-1 by securing structures 217 and is maintained at a constant depth D (e.g., a meter or two) below the ocean surface 50S by floating structures 215 with the exit ports 215 aimed toward the ocean surface.

The invention discloses a dosage calculation method for reducing sewage hardness through a dual-alkali method. The method comprises the specific calculation steps that 1, the total hardness and calcium hardness of sewage are measured; 2, calculating the magnesium hardness; step 3, determining phenolphthalein alkalinity and methyl orange alkalinity of the sewage; 4, calculating the concentrations of hydroxide, carbonate and bicarbonate; step 5, setting a double-alkali excess amount; step 6, calculating the dosage of NaOH; and step 7, calculating the dosage of Na2CO3. Compared with the prior art, the method has the advantages that the calculation precision is high: based on the actual ion concentration (calcium and magnesium hardness and alkalinity) of the sewage and a clear chemical reaction metering relationship, the blindness of a trial and error method is avoided, the dosage can be accurately controlled, and the risk of agent waste (cost reduction) or substandard hardness reduction (membrane scaling prevention) is reduced; the response speed is high; the operation is simple; the economical efficiency is good; the applicability is wide.

A multifunctional detection test kit includes a water test paper including a base and a plurality of test modules provided on different test zones of the base. Each of the test modules is configured to detect one of pH value, total alkalinity, cyanuric acid, total chlorine, bromine, free chlorine water hardness, lead, iron, copper, nitrite, nitrate, MPS, nickel, and phosphate.

The present invention discloses a method for predicting the acidity and alkalinity in the water quality for the growth of sea cucumbers, including: cleaning and repairing a variety of collected water quality data; screening out water quality factors and meteorological factors related to the acidity and alkalinity PH; performing multi-modal decomposition on the repaired water quality factor data to obtain each modal component IMF; performing difference verification on the each modal component IMF and the original data to obtain residual verification data R; fusing the each modal component IMF with water quality factors, meteorological factors and residual verification data to form extended modal component data new-IMFs; performing normalization processing on the extended modal component data new-IMFs; dividing the normalized extended modal component data to obtain a training set, a test set and a validation set; the present invention explores the characteristics of the target factor PH through high-level decomposition, fuses the relationship between multiple associated influencing factors and water quality prediction factors, and forms a "decomposition-fusion-prediction-reconstruction" model to improve the accuracy of water quality prediction.

The present invention relates to a device (1) for measuring the alkalinity of a liquid (41) present in an external reservoir (40). More particularly, the proposed device (1) is used in the aquarium sector for monitoring water quality (41) in marine aquariums (40), performing the mensuration and automatic correction of the alkalinity of this water (41), especially in aquariums (40) that have coral reefs and other sensitive organisms present in saltwater aquariums. In addition, the present invention also proposes a process for measuring the alkalinity of a liquid (41) in an external reservoir (40). In particular, the proposed device (1) and process are characterized in that they comprise a control unit (70) capable of determining the alkalinity of an external liquid (41) present in an external reservoir (40) to the mensuration device (1) by using a CO2SYS method in conjunction with information previously stored in said control unit (70).

1. Name of the design product: Acid-proof sensor. 2. Use of the design product: for detecting and measuring the acidity and alkalinity of a solution. 3. Design features of the design product: in the perspective view. 4. Picture or photograph best indicating the design features: perspective view.

A multifunctional detection test paper includes a base and a plurality of test modules attached to the base. The base includes a base layer and a hydrophobic layer coated thereon, wherein the hydrophobic layer has a plurality of test zones spaced apart from each other. The test modules are provided on the test zones of the hydrophobic layer respectively to separate the test modules from the base layer, wherein each of the test modules includes a detection substance being configured to detect one of pH value, total alkalinity, cyanuric acid, total chlorine, bromine, free chlorine and water hardness when the test modules are immersed into water.

The application discloses a hazardous waste acid-base determination method, which utilizes the principle of acid-base neutralization reaction heat release, determines three heat flow data of the self heat release of the measured hazardous waste sample, the reaction heat release after the measured hazardous waste sample is mixed with acid and the reaction heat release after the measured hazardous waste sample is mixed with alkali under constant external conditions, compares the sizes of the three heat flow data to determine the acid-base property of the substance, solves the difficult problem of hazardous waste acid-base determination, is suitable for the acid-base determination test involved in the storage and disposal of hazardous waste in the chemical industry, has the characteristics of simplicity, directness, high efficiency and strong applicability, and is suitable for the acid-base determination of all kinds of hazardous waste.

A device and method for a differential analysis of ocean's CO2 are described. In particular, the device and method allow quantification of CO2 removal and storage in seawater (or freshwater), wherein the device and method measure the difference in the three parameters of the aqueous inorganic carbon system—pH, Dissolved Inorganic Carbon (DIC), and Total Alkalinity (TA)—for a pair of samples comprising an untreated sample of ambient seawater (or another water source) and a treated sample comprising an effluent leaving a CO2 removal apparatus, to determine a bicarbonate concentration difference between the treated and untreated samples and, as such, the amount of CO2 absorbed via the CO2 removal apparatus.

A pH adjuster for circulating water that contains an alkali metal compound exhibiting alkalinity and / or an alkaline earth metal compound exhibiting alkalinity, wherein the number of particles having a particle size of 0.5 μm or more included in the pH adjuster is 150,000 particles / mL or less based on an aqueous solution in which the concentration of the alkali metal and / or the alkaline earth metal is 1 mol / L.

The invention discloses a dosage calculation method for regulating and controlling the acidity of required soil by using an alkaline material, which comprises the following steps: step 1, measuring the initial pH value of the soil to be regulated and controlled, and generating a pH-lime water addition amount curve by using a calcium hydroxide titration method; 2, according to the pH-lime water addition amount curve, obtaining the lime demand amount for adjusting the soil; 3, according to the lime demand quantity for adjusting the soil, obtaining the lime equivalent value of an alkaline material and the alkaline material demand quantity for adjusting the soil through an acid extraction-alkali back titration method; and 4, according to the demand quantity of the lime for adjusting the soil and the demand quantity of the alkaline material for adjusting the soil, obtaining the combined dosage of the lime with the target pH value and the alkaline material. The method provided by the invention has the characteristics of reducing soil acidity, realizing dynamic adaptation of total alkalinity and reducing the risk of excessive application of a single material.

The present disclosure relates to devices, systems, uses and methods for determining the amount of carbon dioxide absorbed by a soil permeate (1). The method comprises positioning the device (3) at a measurement location (7) in the soil (2). A basicity storage layer (6) of the device (3) is arranged below the upstream wall (5), wherein the basicity storage layer (6) is formed from a material bearing a plurality of acidic groups on its surface. The method further comprises allowing the mineral (4) to react with water and carbon dioxide during the measurement time period to form a soil permeate (1) that permeates through the soil (2) and through the alkalinity storage layer (6), thereby deprotonating at least a portion of the acidic groups of the material forming the alkalinity storage layer (6). The method further comprises determining the total alkalinity absorbed by the alkalinity storage layer (6) and determining the total amount of carbon dioxide absorbed by the soil permeate (1) based on the determined total alkalinity absorbed by the alkalinity storage layer (6).

The present invention discloses a detection method and detection system, electronic device and storage medium for the precipitation speed of inorganic salts in water, wherein the detection method comprises the following steps: S1: obtaining the type of inorganic salts precipitated in the water to be tested, one of the inorganic carbon methyl orange alkalinity (Cmalk), pH value and total dissolved inorganic carbon (DIC) in the water to be tested, and the element and initial content of the target inorganic salt contributing to the alkalinity of non-inorganic carbon methyl orange; S2: continuously detecting the change value of the carbon dioxide concentration (CO2w) or the gas phase carbon dioxide concentration (PCO2) balanced with it in the water to be tested over time under a closed constant temperature and constant pressure environment; S3: obtaining the precipitation amount of the target inorganic salt according to the data obtained in step S1 and step S2; S4: obtaining the precipitation speed of the target inorganic salt according to the precipitation amount obtained in step S3. A detection method for the precipitation speed of inorganic salts in water with less manual intervention, low detection limit and high precision is provided.

The present application relates to a method for improving the content of calcium carbonate in electrolytic water precipitate, taking calcium hardness, magnesium hardness and alkalinity as independent variables, obtaining the regression model of calcium hardness, magnesium hardness and alkalinity and the regression model of gas-water ratio under the condition of non-aeration improvement, calculating the gas-water ratio, realizing the application of electrolytic water precipitate in limestone wet flue gas desulfurization, improving the reaction rate of electrolytic water precipitation process and the content of calcium carbonate in electrolytic water precipitate to more than 95%, realizing the application of electrolytic water precipitate in limestone wet flue gas desulfurization, directly calculating the working condition of aeration improvement according to the quality of cooling water, avoiding blind test and saving labor cost; the water quality index of enterprise cooling water can be directly applied in this range, and the regression equation can be determined again according to the test method if it is not in this range, which has strong applicability.

The invention discloses a method for determining alkalinity and sodium aluminate concentration in a secondary aluminum ash hydrolysis solution and its application, and relates to the technical field of chemical analysis. The determination method comprises: (1) taking a secondary aluminum ash hydrolysis solution, adding a first complexing agent, and obtaining a first test solution; (2) adjusting the pH value of the first test solution to 8-8.5 by using an acid solution, and obtaining a first solution; (3) adjusting the pH value of the first solution to below 4.8 by using an acid solution, and heating it at 50-90°C for 5-10 minutes, and obtaining a second test solution; (4) adjusting the pH value of the second test solution to 8-8.5 by using an alkali solution, and obtaining a third solution; (5) adding a second complexing agent to the third solution, and obtaining a third test solution; (6) adjusting the pH value of the third test solution to 8-8.5 by using an acid solution; (7) calculating the concentrations of caustic soda, carbonate and sodium aluminate: based on the above determination method, one-time sampling and continuous measurement can be achieved.

A multifunctional detection test paper includes a base and a plurality of test modules attached to the base. The base includes a base layer and a hydrophobic layer coated thereon, wherein the hydrophobic layer has a plurality of test zones spaced apart from each other. The test modules are provided on the test zones of the hydrophobic layer respectively to separate the test modules from the base layer, wherein each of the test modules includes a detection substance being configured to detect one of pH value, total alkalinity, cyanuric acid, total chlorine, bromine, free chlorine and water hardness when the test modules are immersed into water.

The invention discloses a method for determining the total alkalinity, carbonate and bicarbonate content of geothermal water, electronic equipment and a medium. The method comprises the following steps: step 1, taking two terrestrial heat horizontal samples and two blank samples; 2, recording V1 for the first geothermal level row sample; 3, repeating the operation in the step 2 for the first blank sample, and recording V01; 4, recording V2 and V3 for a second geothermal level row sample; 5, repeating the operation in the step 4 for the second blank sample, and recording V02; and 6, calculating the total alkalinity, the carbonate content and the bicarbonate content according to V1, V01, V2, V3 and V02. According to the method, result deviation caused by improper titration modes is avoided by selecting the titration modes, the practical operability is high, and compared with a manual titration mode, the method has better precision and standard addition recovery rate.

According to the technology for separating stibnite and arsenopyrite through low-alkalinity flotation, in the antimony roughing flotation and fine selection process, modified polyacrylamide is added to replace part of lime, Pb (NO3) 2 serves as an activating agent, the modified polyacrylamide and the lime serve as an inhibitor together, so that the adding amount of the lime is reduced, upward floating of arsenic in ore is inhibited, and the arsenic content in the ore is reduced; and the flotation alkalinity is reduced, so that the floating of arsenic in the antimony-arsenic minerals is inhibited under the low-alkalinity condition. Test results show that in the antimony roughing flotation and concentration process, compared with only using lime as an inhibitor, under the combined action of modified polyacrylamide, lime and Pb (NO3) 2, the lime dosage and alkalinity in the antimony roughing flotation and concentration process are effectively reduced, the recovery rate of antimony is not affected, and the phenomenon that ore froth is sticky is improved. In addition, the modified polyacrylamide has little pollution to the environment and is more environment-friendly.