25 results about "Chemical concentration" patented technology

The present disclosure provides a method for simulating the environmental exposure concentration of chemical substances in lakes that meets the scale of a watershed, including: dividing the lake into regions according to a division rule to obtain multiple partitions, and recording the geometric parameters of each partition, the division rule including a first rule that the only water outlet and the water inlet of the lake are divided into different partitions and a second rule that the regional division meets the needs of chemical substance concentration management; calculating the calculated water flow rate between each partition on the same day and the calculated water outflow rate of the water outflow partition based on the daily hydrological data from the watershed hydrological model, the estimated value of the water level of each partition and the geometric parameters; optimizing and adjusting the partition by adjusting the water level or volume of the partition based on an optimization index, the optimization index including a first index related to the calculated water outflow rate of the water outflow partition on the same day and a second index related to the water flow rate between each partition on the same day; calculating the daily chemical concentration of the adjusted partition based on the chemical substance data from the watershed hydrological model.

An apparatus for testing personal protection equipment or devices comprising an enclosure body having an air-inflatable support structure that receives an air-transferable chemical and air to maintain a substantially rigid structural integrity; a nozzle connected to the air-inflatable support structure, wherein the nozzle releases air and the air-transferable chemical from the air-inflatable support structure into the interior of the enclosure body for a selected period of time as a concentration of the air-transferable chemical in the interior of the enclosure body is at a steady state of uniformity; and a panel integrated into the enclosure body that passively releases air from the enclosure body.

Provided in the present invention are a system and method for inhibiting operational corrosion of a condenser. The system comprises a chemical dispensing system. The chemical dispensing system comprises a chemical stock solution tank used for containing a hydrogen peroxide stock solution, a desalted water tank, a chemical dispensing tank in communication with the desalted water tank, and a chemical sample intake system, wherein the upper surface of the chemical dispensing tank is provided with a chemical inlet, and the chemical dispensing tank is provided with a chemical concentration measurement instrument; a chemical pool in communication with the chemical stock solution tank, a cleaning pool in communication with the desalted water tank, and a waste water pool are provided on the upper surface of the chemical dispensing tank; the chemical sample intake system comprises a chemical sample intake device; and the chemical concentration measurement instrument is electrically connected to both the chemical sample intake system and a second control valve for desalted water. In the system for inhibiting operational corrosion of a condenser provided in the present invention, using the chemical sample intake device to achieve micro-dose chemical intake improves the control precision of the amount of a chemical sample and the control precision of chemical concentration; and the chemical sample intake device performs cleaning and chemical rinsing before each instance of chemical acquisition, thereby ensuring the concentration of a chemical conveyed into the chemical dispensing tank, and preventing the introduction of other impurities into the chemical dispensing tank.

The invention provides a method and device for obtaining a general chemical combination for mixture toxicity assessment, and the method comprises the steps: carrying out the statistics of the total number of chemicals in a target environment, and constructing a compound detection matrix of the target environment according to the chemical concentration obtained through the detection of a sampling detection point and the total number of the chemicals; constructing a mapping relation between the chemicals and the analysis detection limits, and converting the compound detection matrix into a compound existence matrix based on the target chemical concentration and the analysis detection limits mapped by the target chemicals; based on the occurrence frequency of the candidate chemicals in the compound existence matrix and a first frequency threshold, constructing a first frequent item set of the chemicals; based on an item set optimization strategy, performing optimization from low-order to high-order chemical combination on the first frequent item set of the chemicals, and sequentially obtaining high-order frequent item sets; and based on the chemical first frequent item set and the sequentially obtained high-order frequent item sets, obtaining a general chemical combination. And the precision of toxicity assessment and risk evaluation of the environmental mixture can be improved.

Sensor and / or sound detection device with: a sensing device (10) with a sensitive surface (12) which is designed such that a change in at least one physical quantity and / or at least one chemical concentration at the sensitive surface (12) causes a change in a sensor signal output by or tapped from the sensing device (10); wherein at least one access channel (18) in the sensor and / or sound detection device is designed such that, at least as long as the at least one access channel (18) is open, air and / or at least one gas can be transferred through the at least one access channel (18) between a spatial environment of the sensor and / or sound detection device and the sensitive surface (12); characterized by at least one at least partially water-impermeable membrane (20) with an inner membrane surface (20a) oriented towards the at least one associated access channel (18), wherein at least one contact surface (22) of the respective membrane (20) located on the respective inner membrane surface (20a) is pressed against at least one associated membrane contact surface (24) on the at least one associated access channel (18) by deformation of the respective membrane (20) when a membrane outer surface (20b) of the respective membrane (20) or a cover layer (40) located on the respective membrane outer surface (20b) is wetted with at least a minimum quantity of liquid, such that the at least one associated access channel (18) is sealed liquid-tight, wherein the at least one membrane (20) is designed such that, if the respective membrane outer surface (20b) or cover layer (40) is not wetted,the respective membrane (20) is in its initial position and the at least one associated access channel (18) is kept open via at least one open intermediate gap between the at least one contact surface (22) of the respective membrane (20) in its initial position and the at least one associated membrane contact surface (24) on the at least one associated access channel (18).

The utility model discloses a chemical substance concentration real-time monitor which comprises a transverse plate, a monitor body is arranged below the transverse plate, a monitoring assembly is installed on the outer wall of the monitor body, an installation cavity is formed in the monitor body, an electromagnet is installed in the installation cavity, and the electromagnet is connected with the transverse plate. A sliding cavity is formed in the monitor body, and a magnetic sliding plate is slidably connected between the left inner wall and the right inner wall of the sliding cavity. According to the utility model, after the electromagnet is electrified, a larger repulsive force is applied to the magnetic sliding plate, and after the repulsive force is applied, the magnetic sliding plate drives the warning lamp and the buzzer to move downwards, so that the warning lamp and the buzzer move downwards and are directly exposed to the outside, and when the magnetic sliding plate moves downwards, the second conducting strip is driven to move downwards; when the second conducting strip moves downwards to be in contact with the first conducting strip, the warning lamp and the buzzer are started, the fault warning effect is achieved, and an alarm can be given out rapidly.

A system for measuring chemical concentrations and other attributes or conditions of the various forms of matter (solid, liquid or gas) in an environment. The system finds particular application for industrial processes and procedures whereby real-time, quasi-real-time or sampling chemicals of matter, or factors or conditions in an environment could help operations become more efficient, effective and sustainable.

The invention belongs to the technical field of data processing, and particularly relates to a peptide milk powder activity quality detection method based on wet process production, which comprises the following steps: S1, acquiring fluid time sequence data of a production node and an original reflection spectrum sequence of a spray drying node, performing smooth filtering operation on the original reflection spectrum sequence to obtain a standardized smooth spectrum; s2, importing the smooth spectrum into a pre-configured partial least square regression algorithm model, and calculating and outputting the apparent chemical concentration of the peptide component in the milk powder of the current batch; and S3, based on background features of the smooth spectrum and fluid mechanics features of the fluid time sequence data, constructing an operation index with causal logic to complete depth correction operation on the apparent chemical concentration, and outputting real activity retention concentration with both concentration attribute and activity attribute. According to the invention, the optical measurement error is effectively eliminated, and the real biological value is accurately evaluated.

A system for suppressing corrosion in the operation of a condenser, characterized in that it comprises a preparation system, the preparation system comprising: a chemical storage container (1) for holding the hydrogen peroxide stock solution; a demineralized water tank (4) for holding demineralized water; a preparation tank (15), wherein the upper surface of the preparation tank has a chemical inlet (13), and wherein the preparation tank (15) is provided with a chemical concentration detector (16); and wherein a chemical basin (10), a cleaning basin (11), and a waste liquid basin (12) are arranged on the upper surface of the preparation tank (15), and wherein the chemical basin (10) is connected to the chemical storage tank (1) via a chemical feed line; and wherein the cleaning basin (11) is connected to the demineralized water tank (4) via a first demineralized water delivery line; and wherein the preparation container (15) is connected to the demineralized water tank (4) via a second demineralized water delivery line, and wherein a second demineralized water control valve (22) is arranged on the second demineralized water delivery line; a chemical sample supply system comprising a chemical sample feeder (8), wherein the chemical sample feeder (8) can be raised and lowered along a first direction and can move between the chemical basin (10), the cleaning basin (11), the waste liquid basin (12) and the chemical inlet (13); and wherein the chemical concentration detector (16) is electrically connected to the chemical sample supply system and the second demineralized water control valve (22), respectively.

A heavy industrial mobile CIP system, which comprises two closed loops and facilitate uniformity in chemical mixing and in heating of cleaning fluid and chemical concentration. The first loop comprises an electric pump for pumping fluid from a mixing tank and through the first loop. The cleaning chemicals are added to the fluid circulating in the first loop prior to the fluid returning to the mixing tank. The cleaning fluid is heated in the mixing tank by at least one heater. The second loop comprises a second pump to pump fluid from the mixing tank through the second loop, which is connected to the equipment to be cleaned. The fluid and debris from cleaning the equipment circulates through the second loop to the mixing tank. In some cases, a weir can be used to facilitate separation of solids in the fluid returning from the equipment into the mixing tank.

This item is a chemical concentration controller used to control the chemical concentration in cooling water. This item is used in environments where it is directly exposed to rainwater, such as on the rooftop of a building. This item is also a component that is attached to a chemical injection machine installed next to a cooling tower. This item is box-shaped overall, and has an outer door and a middle door. The middle door opens and closes vertically, is horizontal when open, and has a rainproof function that protects the precision equipment inside the item from rainwater, etc. This item is equipped with a touch panel display on the front.

The invention discloses reverse concentration equipment for chemical raw materials, relates to the field of chemical concentration instruments, and aims at solving the problems that in the traditional concentration technology, energy consumption is too high, and the quality and performance of products are affected after concentration, the reverse concentration equipment comprises a base, a driving shaft is rotationally connected into the base, and a rotating frame is rotationally connected to the driving shaft; a centrifugal material barrel is rotationally connected into the rotating frame, a material barrel sleeve is slidably connected to the upper portion of the centrifugal material barrel, a water permeable assembly is fixedly connected into the material barrel sleeve and connected to the inner wall of the centrifugal material barrel in a sealed mode, the water permeable assembly is rotationally connected with a water pumping pipe, the water pumping pipe is fixedly connected with a negative pressure water suction cylinder, and the negative pressure water suction cylinder is fixedly connected with an adjusting carrier plate. The device has the advantages that the centrifugal separation and the negative pressure suction act synergistically, so that the concentration efficiency is remarkably improved, and meanwhile, the problems that the energy consumption is increased and the raw materials are decomposed at high temperature due to heating are avoided.

The invention provides a garbage disposal site odor pollution monitoring and hierarchical control device and method, and relates to the technical field of garbage disposal site odor control. The device comprises a multi-stage pretreatment module used for carrying out stage-by-stage dehumidification and dust removal treatment on to-be-monitored gas to obtain pretreated gas, an integrated monitoring module used for obtaining an odor component concentration electric signal of the pretreated gas, a first data processing module used for converting the odor component concentration electric signal to obtain a chemical concentration monitoring value, and a second data processing module used for sending the chemical concentration monitoring value to a server. The second data processing module is used for converting the chemical concentration monitoring value into an odor concentration monitoring value, the grading module is used for grading the odor concentration monitoring value to obtain different grades of odor pollution, and the deodorization module is used for generating different deodorization implementation schemes according to the odor concentration grades. The problems of low odor monitoring precision and high odor treatment cost in the prior art are solved.

A system for measuring chemical concentrations and other attributes or conditions of the various forms of matter (solid, liquid or gas) in an environment. The system finds particular application for industrial processes and procedures whereby real-time, quasi-real-time or sampling chemicals of matter, or factors or conditions in an environment could help operations become more efficient, effective and sustainable.

1. The name of the product of this design: Fiber optic spectrometer (SGM‑1700). 2. Purpose of the product of this design: used to detect near-infrared spectra, widely used in measuring the chemical concentration of liquids, material characterization and other fields. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

To provide a chemical application device capable of imparting an antibacterial or antiviral effect to paper.SOLUTION: This chemical application device for applying a chemical solution exhibiting an antibacterial or antiviral effect to paper applies the chemical solution so as to satisfy C≥104T / MR, in which C% denotes a chemical concentration of the chemical solution, Tg / m2 denotes an effective application amount of the chemical, Mg denotes the basis weight of the paper, and R% denotes a permissible increase in moisture content of the paper.SELECTED DRAWING: Figure 1

The present invention discloses an intelligent chemical dosing system and method based on machine learning, comprising the steps of: S1. Real-time collecting the operation parameters of the fluidized bed and water quality characteristic data, including hydrodynamic parameters, water quality index parameters and particle morphology parameters, and constructing a time-series feature database; S2. Using the data in the time-series feature database to construct a dynamic chemical dosing model based on the fluidized bed to jointly predict the chemical type, dosing amount and operation parameters; S3. According to the prediction results output by the model, controlling the chemical dosing amount, chemical concentration, water flow rate and aeration intensity; S4. Real-time monitoring the fluidized bed and chemical dosing control parameters, and dynamically correcting the fluidized bed parameters in combination with the turbidity of the fluidized bed effluent and the particle sedimentation efficiency, aiming to solve the problems of poor sewage treatment effect in the prior art, which may lead to waste of chemicals, unqualified treatment and secondary environmental pollution.

The present invention discloses a method for optimizing the single-shot recovery rate of a combined flooding process using carbon dioxide and chemicals, belonging to the technical field of enhancing oil and gas recovery. The method comprises the following steps: S1: crude oil sampling, mixing the crude oil sample with a variety of chemicals of varying concentrations, and determining the appropriate chemical concentration based on the oil washing rate; S2: determining the injection sequence and injection ratio of the chemicals and carbon dioxide through long core flooding experiments, using the single-shot recovery rate as the optimization metric; S3: establishing a radial three-dimensional model of a single-well flooding process based on the injection sequence and injection ratio of the chemicals and carbon dioxide determined in step S2, and optimizing process parameters through numerical simulation. This method optimizes the injection sequence and injection ratio of carbon dioxide and chemicals for conventional multi-segment composite flooding technology, maximizing the recovery rate of a single-shot carbon dioxide plus composite flooding process. While achieving the same total recovery rate, it reduces the number of repeated operations and saves costs.

The present invention discloses a method for analyzing the concentration of chemical substances in liquids based on surface-enhanced Raman scattering, comprising the following steps: step 1, preparing a series of standard solutions of the analyte with different concentrations to obtain a standard curve of the analyte; and step 2, using the standard curve to calculate the concentration of the analyte in the solution to be tested. Before performing Raman spectroscopy analysis in the two steps, the standard solution and the solution to be tested are subjected to the same pretreatment, wherein the pretreatment method is to add an adjuvant to each standard solution or the solution to be tested, mix them evenly, let them stand, and then filter to obtain a mixture; add an internal standard to the mixture, mix them evenly, and let them stand; then add nanoparticles, mix them evenly, let them stand, and finally perform Raman spectroscopy analysis. The method of the present invention uses adjuvants to promote the stable adsorption of the analyte on the surface of the nanoparticles, thereby enhancing the repeatability of the analysis. The adjuvants can also purify the sample and enhance the accuracy of the analysis, and has good application prospects in the field of analytical chemistry.

The utility model relates to the technical field of accessory devices of chemical concentration balancing devices, in particular to intelligent tank liquid balancing equipment, which integrates an automatic chemical feeding system and an intelligent water replenishing system. The chemical concentration balancing device is used for automatically and quantitatively supplementing water and automatically adding chemicals according to the concentration of the chemicals in the chemical mixing tank, so that the chemicals can reach the optimal proportion at the moment, manual water adding and concentration adjustment after water adding are omitted, the stability and the cleaning effect of the chemicals in the chemical mixing tank are improved, and the practicability is enhanced. Comprising a balancing device shell and a control mainboard, two sets of partition plates are arranged in the balancing device shell, a first cavity, a second cavity and a third cavity are formed in the balancing device through the two sets of partition plates, and four sets of supporting legs are arranged at the bottom end of the balancing device shell.

The utility model relates to the field of chemical dosing, and discloses an industrial circulating cooling water chemical concentration control dosing device which comprises a hoop fixed to a circulating cooling water pipe, a detachable mixing chamber is arranged on the hoop, and a stirring assembly used for uniformizing the concentration of a cooling water chemical is arranged in the mixing chamber. The mixing chamber is provided with a water outlet pipe for adding a cooling water agent into the circulating cooling water pipe, and the water outlet pipe is provided with an electromagnetic valve II; the cooling water agent in the mixing chamber is stirred and mixed evenly through the stirring assembly, the second electromagnetic valve is powered on and opened, the evenly-mixed cooling water agent is added into the circulating cooling water pipe, corrosion and scaling can be effectively reduced through the even agent concentration, the service life of the circulating cooling water pipe is prolonged, and the maintenance and replacement cost is reduced; and meanwhile, the detachable mixing chamber can be easily detached for thorough cleaning when medicament residues, sediments or equipment aging need to be cleaned, so that the medicament mixing effect is ensured not to be influenced by pollutants, and the treatment efficiency is maintained.

The utility model relates to chemical liquid medicine concentration automatic measuring equipment which comprises a mounting plate, a pipe body is fixed in the mounting plate, a triangular prism is fixed on the inner top wall of the pipe body, a cover plate is fixed on the right side of the pipe body, and a driving assembly is arranged on the left side of the mounting plate. And a pushing assembly fixed to the driving assembly is rotationally connected into the mounting plate, a cleaning assembly is fixed to the right side of the pushing assembly, the pushing assembly is used for pushing the cleaning assembly to move, and a detection device is fixed into the pipe body. According to the automatic measuring equipment for the concentration of the chemical liquid medicine, under pushing of a driving motor, a pushing assembly can rotate, so that a cleaning assembly is pushed to move, the surface of a prism is effectively cleaned, after cleaning is completed, the pushing assembly can further drive the cleaning assembly to reset, and therefore the subsequent measuring result cannot be affected, and the measuring efficiency is improved. The whole structure is simple, and the influence of the sediment on the measurement result is effectively reduced.

The utility model discloses a two-effect falling-film evaporator, and relates to the technical field of chemical concentration, and the two-effect falling-film evaporator comprises a film distribution cylinder, a falling-film concentration cylinder, a liquid discharge cylinder and a liquid separation cylinder; a half-wave expansion joint and a double-wave expansion joint are further arranged on the falling film concentration cylinder, the double-wave expansion joint is arranged between the half-wave expansion joint and the condensate output pipe, and the steam inlet pipe is connected to the half-wave expansion joint; two wire mesh demisters are arranged in the liquid separation barrel, the two ends of each wire mesh demister are connected with the inner side wall of the liquid separation barrel and the outer side wall of the liquid drainage barrel respectively, the wire mesh demisters are obliquely arranged, the two wire mesh demisters are obliquely arranged relative to the liquid drainage barrel, and the outer side wall of the liquid separation barrel is connected with a secondary steam output pipe; the secondary steam output pipe is arranged above the wire mesh demister, and the bottom of the liquid separation cylinder is connected with a concentrated liquid output pipe. The concentration efficiency of the liquid caustic soda can be effectively improved, and the size change of the barrel body caused by thermal expansion and cold contraction and the like is absorbed, so that the stress is reduced, and the possibility of breakage or leakage of the barrel body is reduced.

The invention discloses an automatic dosing system, and relates to the technical field of automatic control, and the disclosed automatic dosing system comprises a tank body which is arranged on a production line body and is used for containing chemical liquid; the automatic sampling module is used for sampling the chemical liquid to obtain a chemical liquid sample; the liquid medicine analysis module is used for detecting the current chemical concentration value of the chemical liquid sample and generating a dosing signal; the medicament adding module comprises a sample box, a medicament barrel and a metering pump; the medicament output module comprises a first manipulator, an air conveying pipeline, an air tank and an air pump; the control module is used for controlling the metering pump to pump the chemical agent from the agent barrel to the sample box according to the agent adding signal, controlling the air pump to pump air from the air tank to control the air pressure so as to pump the sample box to the material adding station through the air conveying pipeline, and then controlling the first manipulator to grab the sample box from the target material adding station to pour the chemical agent into the groove body; therefore, the dosing efficiency and the reliability of the system are remarkably improved, and the automatic dosing system which is relatively high in efficiency and relatively safe is realized.