Online measurement system and method for concentration of multi-component acid liquor

Abstract

The embodiment of the invention discloses an online measurement system and method for the concentration of a multi-component acid solution. According to the scheme, the online measurement system comprises an anti-corrosion acid solution pipeline and an ultraviolet light source, the anti-corrosion acid liquid pipeline is used for circulating multi-component acid liquid to be detected, and is provided with a first quartz optical window and a second quartz optical window; the ultraviolet spectrograph is used for receiving the wide-spectrum ultraviolet light penetrating out of the second quartz optical window; the controller is respectively connected with the ultraviolet light source, the ultraviolet spectrograph and an upper computer arranged in a monitoring room through cables, the upper computer is used for sending a user control instruction to the controller, and the user control instruction is used for enabling the controller to send a corresponding hardware control instruction to the ultraviolet light source or the ultraviolet spectrograph; the data processing server is in communication connection with the upper computer, and the data processing server is used for analyzing and processing the ultraviolet spectrum data to obtain the concentration information of the acid liquor.

Description

Technical Field

[0001] The present application relates to the technical field of concentration measurement, and in particular to an online measurement system and method for the concentration of a multi-component acid solution. Background Art

[0002] Acids such as hydrochloric acid, nitric acid, and sulfuric acid are important chemical raw materials. In the process of industrial production, there are situations where multiple types of acid are mixed and used. Rapidly and accurately calibrating the content of each component in a multi-component acid solution is essential for efficient and safe production. In the related art, there are methods that use the hydrogen ion concentration in the acid to calibrate the acid concentration, such as the pH meter method and the acid-base titration method, but this method cannot distinguish the concentration of a specific component acid in a multi-component acid. Another method is to calibrate using reaction products, such as indirectly determining the content of various acid components in the acid by measuring the precipitate generated by the chemical reaction with the acid, but this method has complicated steps and requires drying and weighing. In an environment where multi-component acid is used for large-scale industrial production, this type of method cannot quickly and accurately determine the concentration of each component acid, and cannot meet the needs of quickly and accurately determining the concentration of each component acid in a multi-component acid in an industrial production scenario.

[0003] Therefore, it is necessary to provide a method for conveniently, quickly and accurately measuring the concentrations of various acid components in a multi-component acid solution to meet industrial production requirements. Summary of the invention

[0004] The embodiments of the present specification provide an online measurement method and system for the concentration of a multi-component acid solution, so as to quickly and accurately measure the concentration of each component in the multi-component acid solution.

[0005] To solve the above technical problems, the embodiments of this specification are implemented as follows:

[0006] According to a first aspect of an embodiment of the present invention, there is provided an online measurement system for the concentration of a multi-component acid solution, comprising:

[0007] Anti-corrosion acid pipelines, ultraviolet light sources;

[0008] The corrosion-resistant acid liquid pipeline is used for circulating the multi-component acid liquid to be detected, and the corrosion-resistant acid liquid pipeline is arranged in a production environment containing the acid liquid; the corrosion-resistant acid liquid pipeline is provided with a first quartz optical window and a second quartz optical window; the first quartz optical window is arranged on one side of the corrosion-resistant acid liquid pipeline, and the second quartz optical window is arranged on the other side of the corrosion-resistant acid liquid pipeline, and the arrangement positions of the first quartz optical window and the second quartz optical window enable the ultraviolet light emitted by the ultraviolet light source to be injected into the interior of the corrosion-resistant acid liquid pipeline through the first quartz optical window, and pass through the multi-component acid liquid to be detected and then pass out from the second quartz optical window;

[0009] An ultraviolet spectrometer, the ultraviolet spectrometer is arranged at a predetermined distance from the second quartz optical window, the ultraviolet spectrometer is used to receive the wide-spectrum ultraviolet light passing through the second quartz optical window, and a grating is arranged in the ultraviolet spectrometer, the grating is used to extract ultraviolet light of different frequencies from the wide-spectrum ultraviolet light and measure the intensity of ultraviolet light of each frequency in the ultraviolet light of different frequencies, so as to obtain ultraviolet spectrum data;

[0010] A controller, wherein the controller is connected to the ultraviolet light source, the ultraviolet spectrometer and a host computer arranged in a monitoring room through cables, the host computer is used to send a user control instruction to the controller, the user control instruction is used to enable the controller to send a corresponding hardware control instruction to the ultraviolet light source or the ultraviolet spectrometer based on the user control instruction, and the hardware control instruction is used to control the measurement process parameters of the acid concentration; the host computer is also used to obtain the ultraviolet spectrum data measured by the ultraviolet spectrometer via the controller;

[0011] A data processing server, wherein a communication connection is established between the data processing server and the host computer, and the data processing server is used to analyze and process the ultraviolet spectrum data to obtain concentration information of different types of acid solution in the multi-component acid solution to be detected.

[0012] Preferably, a first convex lens is arranged between the ultraviolet light source and the first quartz optical window, and a second convex lens is arranged between the ultraviolet spectrometer and the second quartz optical window; the first convex lens is used to converge the ultraviolet light emitted by the ultraviolet light source toward the first quartz optical window; the second convex lens is used to converge the ultraviolet light emitted from the second quartz optical window and emitted toward the ultraviolet spectrometer.

[0013] Preferably, the ultraviolet light source, the first quartz optical window, the second quartz optical window and the ultraviolet spectrometer are wrapped by an opaque pipe, and the opaque pipe is filled with nitrogen.

[0014] Preferably, the anti-corrosion acid liquid pipeline is provided with an electromagnetic valve, the electromagnetic valve is used to control the acid liquid flow in the anti-corrosion acid liquid pipeline, and the electromagnetic valve is connected to the controller via a cable.

[0015] Preferably, the data processing server includes a data processing unit and a data analysis unit, the data processing unit is used to analyze and process the ultraviolet spectrum data at the current moment to obtain the concentration data of each component of the acid solution in the anti-corrosion acid solution pipeline at the current moment; the data analysis unit is used to draw a curve of the change of the concentration of each component of the acid solution over time based on the concentration data of each component of the acid solution in the anti-corrosion acid solution pipeline at different moments.

[0016] Preferably, a first light path protection pipe is provided between the ultraviolet light source and the first quartz optical window, and the first convex lens is provided in the first light path protection pipe.

[0017] Preferably, a second light path protection pipe is provided between the second quartz optical window and the ultraviolet spectrometer, and the second convex lens is provided in the second light path protection pipe.

[0018] According to a second aspect of an embodiment of the present invention, there is provided an online measurement method for the concentration of a multi-component acid solution, comprising:

[0019] The host computer sends a user control instruction to the controller, and the user control instruction is at least used to set the opening time of the ultraviolet light source when the multi-component acid liquid to be detected in the anti-corrosion acid liquid pipeline is detected; the controller converts the user control instruction into a corresponding hardware control instruction; the controller sends the hardware control instruction to the ultraviolet light source; the ultraviolet spectrometer collects the wide-spectrum ultraviolet light passing through the second quartz optical window of the anti-corrosion acid liquid pipeline during the opening time of the ultraviolet light source; the ultraviolet spectrometer extracts ultraviolet light of different frequencies from the wide-spectrum ultraviolet light and measures the intensity of ultraviolet light of each frequency in the ultraviolet light of different frequencies, thereby obtaining ultraviolet spectrum data; the ultraviolet spectrometer sends the ultraviolet spectrum data to the host computer under the control of the controller, and the host computer forwards the ultraviolet spectrum data to the data processing server, the data processing server analyzes and processes the ultraviolet spectrum data to obtain the concentration information of different types of acid liquid in the multi-component acid liquid to be detected, and the data processing server sends the concentration information of the different types of acid liquid to the host computer.

[0020] One embodiment of the present specification can at least achieve the following beneficial effects: the online measurement system for the concentration of multi-component acid provided by the present invention utilizes the advantages of non-destructive and non-contact ultraviolet spectroscopy to achieve spatial separation of the acid to be measured and the tester, and can achieve the purpose of real-time measurement of the concentration of multi-component acid in the production environment, avoiding the contact between the tester and the acid, and is a highly automated and highly safe test solution. By setting up an optical window in the acid pipeline, the real-time online detection of the acid is completed, so that the sampling time continuity is higher, avoiding the data discreteness caused by the sampling frequency of the tester in other methods, and generating a complete curve of the acid concentration changing over time. The isolation of the acid through the optical window avoids the influence of other substances in the air on the acid spectrum, and enhances the accuracy of the test. Finally, the specific equipment used in this system has a simple structure, is easy to deploy, and is more friendly to complex production environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a schematic diagram of the positional relationship of components near a corrosion-resistant acid liquid pipeline in an online measurement system for the concentration of a multi-component acid liquid provided in an embodiment of this specification;

[0023] Figure 2 The present invention is a schematic diagram of the absorption cross section of sulfate and nitrate when an online measurement system for the concentration of a multi-component acid solution provided by the present invention is used for measurement in an actual scenario.

[0024] Among them, 1 represents the anti-corrosion acid pipeline, 2 represents the ultraviolet light source, 3 represents the optical path protection pipeline, 4 represents the first quartz optical window, 5 represents the first convex lens, 6 represents the second convex lens, and 7 represents the ultraviolet spectrometer. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of one or more embodiments of this specification clearer, the technical solutions of one or more embodiments of this specification will be clearly and completely described below in combination with the specific embodiments of this specification and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of one or more embodiments of this specification.

[0026] It should be understood that although the terms first, second, third, etc. may be used in this application document to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.

[0027] The background technology section above records that acidic liquids such as hydrochloric acid, nitric acid, and sulfuric acid are important chemical raw materials. In the process of industrial production, there are situations where multiple types of acidic liquids are mixed and used. Rapidly and accurately calibrating the content of each component in a multi-component acidic solution is essential for efficient and safe production. In the related art, there are methods that use the hydrogen ion concentration in the acidic liquid to calibrate the acidic liquid concentration, such as the pH meter method and the acid-base titration method, but this method cannot distinguish the concentration of a specific component acidic liquid in a multi-component acidic liquid. Another method is to calibrate using reaction products, such as indirectly determining the content of various acidic liquid components in the acidic liquid by measuring the precipitate generated by the chemical reaction with the acidic liquid, but this method has complicated steps and requires drying and weighing. In an environment where multi-component acidic liquids are used for large-scale industrial production, this type of method cannot quickly and accurately determine the concentration of each component acidic liquid, and cannot meet the need to quickly and accurately determine the concentration of each component acidic liquid in a multi-component acidic liquid in an industrial production scenario.

[0028] In order to solve the defects in the prior art, this solution provides the following embodiments:

[0029] The principle of the technical solution of the present invention is briefly described below in combination with the application scenario. It should be noted that although the abstract principle is familiar to those skilled in the art, in combination with the specific application scenario, the inventor analyzed the defects of the prior art described above, closely combined the abstract technical principle with the specific application scenario, and proposed the technical solution to be described below. The abstract principle is briefly described below. The anions in the acid solution absorb the energy of photons, causing the attenuation of the ultraviolet light intensity, and the absorption peaks of different acid radicals on the spectrum are different. By judging the peak position and intensity, the concentration of components in the acid solution can be inferred. Ultraviolet spectroscopy measurement technology is sensitive to anions in the acid solution, and can accurately capture the concentration of acid radicals, thereby inferring the content of different components in the solution. In addition, ultraviolet spectroscopy has a fast response speed and is a type of non-destructive testing method that can achieve concentration calibration of the working solution without damaging the industrial environment.

[0030] Next, an online measurement system for the concentration of a multi-component acid solution provided in the embodiment of the specification will be specifically described with reference to the accompanying drawings.

[0031] An online measurement system for the concentration of a multi-component acid solution provided by an embodiment of the present invention may include a corrosion-resistant acid solution pipeline for circulating the multi-component acid solution to be tested. The corrosion-resistant acid solution pipeline may be arranged in a production environment where multi-component acid solution is used for industrial production. For example, in some industrial production environments, the acid solution preparation equipment is responsible for the industrial production of various required acid solutions, and then the various acid solutions produced are mixed in the proportioning equipment and transported to the industrial product production equipment via pipelines. In this industrial production environment, the pH meter method, acid-base titration method or calibration method using reaction products introduced above cannot quickly and accurately determine the concentration data of each component acid solution in the multi-component acid solution to meet the real-time demand of the production equipment for the concentration data of each component acid solution. In the present invention, a first quartz optical window and a second quartz optical window can be respectively arranged on the anti-corrosion acid liquid pipeline, wherein the first quartz optical window can be arranged on one side of the anti-corrosion acid liquid pipeline, and the second quartz optical window can be arranged on the other side of the anti-corrosion acid liquid pipeline, so that after an ultraviolet light source is arranged near the anti-corrosion acid liquid pipeline, the ultraviolet light emitted by the ultraviolet light source can be injected into the interior of the anti-corrosion acid liquid pipeline through the first quartz optical window, and after passing through the multi-component acid liquid to be detected circulating in the anti-corrosion acid liquid pipeline, it can be emitted out of the anti-corrosion acid liquid pipeline through the second quartz optical window. In the present invention, an ultraviolet spectrometer can be placed at a predetermined distance from the second quartz optical window, and the ultraviolet spectrometer is used to receive the wide-spectrum ultraviolet light passing through the second quartz optical window. A grating is arranged in the ultraviolet spectrometer, and the grating can be used to extract ultraviolet light of different frequencies from the wide-spectrum ultraviolet light and measure the intensity of ultraviolet light of each frequency in the ultraviolet light of different frequencies, thereby obtaining ultraviolet spectrum data.

[0032] Considering that the industrial production environment in which the ultraviolet light source and the ultraviolet spectrometer are set in the above text may be relatively complex, if the relevant personnel directly control the opening and closing of the ultraviolet light source and the ultraviolet spectrometer and other measuring equipment in the industrial production environment, there may be a risk of damaging physical health, so a controller can also be set in the present invention, and the controller can be connected to the ultraviolet light source and the ultraviolet spectrometer respectively through cables, and the controller can also be connected to the host computer set in the monitoring room, wherein the host computer refers to a computer that can directly issue control commands. In an actual scenario, the host computer can be a monitoring computer set in the monitoring room, and the controller can be set in the production environment or in the monitoring room. The monitoring personnel can send user control instructions to the controller via the host computer in the monitoring room, and the user control instructions can be used to command the controller to send corresponding hardware control instructions to the ultraviolet light source or the ultraviolet spectrometer based on the user control instructions, and the hardware control instructions can be used to control the measurement process parameters of the acid concentration.

[0033] In the online measurement system of the concentration of the multi-component acid solution provided by the present invention, the host computer can also be used to obtain the ultraviolet spectrum data obtained after processing by the ultraviolet spectrometer via the controller. In a possible embodiment, the host computer can send a data acquisition instruction to the controller, and the controller can then send a data sending instruction to the ultraviolet spectrometer, and the ultraviolet spectrometer can then send the ultraviolet spectrum data obtained after processing to the host computer. In the system of the present invention, in order to process the ultraviolet spectrum data, a data processing server can be set up, and the data processing server can establish a communication connection with the host computer. The data processing server can be used to analyze and process the ultraviolet spectrum data to obtain the concentration information of different types of acid solutions in the multi-component acid solution to be detected.

[0034] The online measurement system of the multi-component acid solution concentration provided by the present invention utilizes the advantages of non-destructive and contactless ultraviolet spectrum, realizes the spatial separation of the acid solution to be measured and the tester, can complete the purpose of real-time measurement of the concentration of the multi-component acid solution in the production environment, avoids the contact between the tester and the acid solution, and is a highly automated and highly safe test solution. By setting up an optical window in the acid solution pipeline, the real-time online detection of the acid solution is completed, so that the sampling time continuity is higher, the data discreteness caused by the sampling frequency of the tester in other methods is avoided, and a complete curve of the acid solution concentration changing with time is generated. The isolation of the acid solution by the optical window avoids the influence of other substances in the air on the acid solution spectrum, and enhances the accuracy of the test. Finally, the specific equipment used in this system is simple in structure, easy to deploy, and more friendly to complex production environments.

[0035] Based on the scheme described above, the embodiments of this specification also provide some specific implementation plans of the system, which are described below.

[0036] Considering that the ultraviolet light for detection emitted by the ultraviolet light source may be divergent, in order to improve the convergence of light, in an optional embodiment, a first convex lens may be provided between the ultraviolet light source and the first quartz optical window, and a second convex lens may be provided between the ultraviolet spectrometer and the second quartz optical window. In this solution, the first convex lens is used to converge the ultraviolet light emitted by the ultraviolet light source toward the first quartz optical window, and the second convex lens is used to converge the ultraviolet light emitted from the second quartz optical window and toward the ultraviolet spectrometer.

[0037] In order to further improve the convergence of light, in an optional embodiment, the ultraviolet light source, the first quartz optical window, the second quartz optical window and the ultraviolet spectrometer can be wrapped by an opaque pipe, and the opaque pipe can be filled with nitrogen. Since nitrogen is an inert gas, the interference caused by oxygen in the air when detecting sulfate can be avoided.

[0038] In order to further improve the convergence of light, in an optional embodiment, a first light path protection tube may be provided between the ultraviolet light source and the first quartz optical window, and the first convex lens may be provided in the first light path protection tube. A second light path protection tube may be provided between the second quartz optical window and the ultraviolet spectrometer, and the second convex lens may be provided in the second light path protection tube to isolate the influence of external light on the test results. The present invention does not limit the material of the light path protection tube, and in an optional solution, an opaque plastic may be selected.

[0039] It was mentioned above that the corrosion-resistant acid liquid pipeline can be set in a production environment that utilizes multi-component acid liquid for industrial production. In a possible scenario, the corrosion-resistant acid liquid pipeline may be used as one of multiple pipelines for transporting multi-component acid liquid. In order to control the flow of multi-component acid liquid flowing in the corrosion-resistant acid liquid pipeline, in an optional embodiment, an electromagnetic valve may be provided on the corrosion-resistant acid liquid pipeline. The electromagnetic valve is used to control the acid liquid flow in the corrosion-resistant acid liquid pipeline. The electromagnetic valve is connected to the controller via a cable, so that the tester can send an instruction to control the valve opening percentage to the controller via the host computer.

[0040] In an optional embodiment, the data processing server may include a data processing unit and a data analysis unit, wherein the data processing unit is used to analyze and process the ultraviolet spectrum data at the current moment to obtain the concentration data of each component acid solution in the anti-corrosion acid solution pipeline at the current moment; the data analysis unit is used to draw a curve of the concentration of each component acid solution over time based on the concentration data of each component acid solution in the anti-corrosion acid solution pipeline at different moments. In an optional solution, the data processing server may send the relevant concentration data and the concentration change curve data over time to the host computer, so that the monitoring personnel can view the concentration data of the multi-component acid solution to be detected in the production environment in real time through the host computer.

[0041] Based on the above-mentioned online measurement system for the concentration of a multi-component acid solution, the present invention further provides a corresponding online measurement method for the concentration of a multi-component acid solution, which may specifically include:

[0042] The host computer sends a user control instruction to the controller, and the user control instruction is at least used to set the opening time of the ultraviolet light source when the multi-component acid liquid to be detected in the anti-corrosion acid liquid pipeline is detected; the controller converts the user control instruction into a corresponding hardware control instruction; the controller sends the hardware control instruction to the ultraviolet light source; the ultraviolet spectrometer collects the wide-spectrum ultraviolet light passing through the second quartz optical window of the anti-corrosion acid liquid pipeline during the opening time of the ultraviolet light source; the ultraviolet spectrometer extracts ultraviolet light of different frequencies from the wide-spectrum ultraviolet light and measures the intensity of ultraviolet light of each frequency in the ultraviolet light of different frequencies, thereby obtaining ultraviolet spectrum data; the ultraviolet spectrometer sends the ultraviolet spectrum data to the host computer under the control of the controller, and the host computer forwards the ultraviolet spectrum data to the data processing server, the data processing server analyzes and processes the ultraviolet spectrum data to obtain the concentration information of different types of acid liquid in the multi-component acid liquid to be detected, and the data processing server sends the concentration information of the different types of acid liquid to the host computer. During actual measurement, the sampling interval can be determined by the user, and the minimum level can be within milliseconds, which can achieve very high time accuracy testing. If abnormal acid concentration occurs, the user end can issue an alarm to remind the monitoring personnel to adjust the acid solution.

[0043] When applying this scheme for actual measurement, it is assumed that there are m kinds of acid mixtures, their absorption spectra are R1(λ), ​​R2(λ), …, Rm(λ), and their concentration coefficients are C1, C2, …, C m , and the total absorption spectrum of the solution is P(λ), the wavelength range is discretized into λ1, λ2, …, λ n , we can list the matrix equation:

[0044]

[0045] Among them, the symbol It indicates that the i-th component acid in the mixed solution has a wavelength of λ j The theoretical absorption intensity at i represents the concentration of the acid solution of the i-th component, symbol Indicates that the mixed solution at wavelength λ j The actual absorption wavelength at, where the mixed solution has a total of m components, i represents the number of the solution in the solution, i=1, 2,…, m; j represents the wavelength in the measured spectrum, a total of n wavelengths are measured, j represents the number of the wavelength in the measured spectrum, j=1, 2,…, n.

[0046] For this equation of the form Ax=b, strictly speaking, the equation has no solution. When the matrix A on the left is full rank, since m is much smaller than n, it is impossible to find a solution that completely satisfies all equations. However, it is possible to find its approximate solution through fitting through a variety of algorithms. For example, in the least squares estimation, the solution is:

[0047] x=(A T A) -1 A T b

[0048] When the A matrix is ​​not of full column rank, Tikhonov regularization can also be used to estimate the solution.

[0049] The concentration of the acid components in the present invention can be calculated specifically based on the Beer-Lambert law, that is, as shown in the following formula, when a beam of parallel light is incident on the solution, the exponential decay of the ratio of the incident light intensity to the outgoing light intensity is linear with the concentration.

[0050]

[0051] Where, symbol I0 represents the initial light intensity, represents reflection loss, P represents pressure, S(T) represents line intensity, g(v represents linear broadening, C represents concentration, and L(θ) represents optical path. In a stable environment, concentration is the only variable that causes changes in light intensity. Figure 2 As shown, Figure 2 The diagram is a schematic diagram of the absorption cross section of sulfate and nitrate when the online measurement system for the concentration of a multi-component acid solution provided by the present invention is used for measurement in an actual scenario, Figure 2 It can be seen that for acid solution, the characteristic peak of sulfate is at 190nm, while that of nitrate is at 200nm.

[0052] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0053] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An online measurement system for multi-component acid concentration, comprising: Anti-corrosion acid pipelines, ultraviolet light sources; The corrosion-resistant acid liquid pipeline is used for circulating the multi-component acid liquid to be detected, and the corrosion-resistant acid liquid pipeline is arranged in a production environment containing the acid liquid; the corrosion-resistant acid liquid pipeline is provided with a first quartz optical window and a second quartz optical window; the first quartz optical window is arranged on one side of the corrosion-resistant acid liquid pipeline, and the second quartz optical window is arranged on the other side of the corrosion-resistant acid liquid pipeline, and the arrangement positions of the first quartz optical window and the second quartz optical window enable the ultraviolet light emitted by the ultraviolet light source to be injected into the interior of the corrosion-resistant acid liquid pipeline through the first quartz optical window, and pass through the multi-component acid liquid to be detected and then pass out from the second quartz optical window; An ultraviolet spectrometer, the ultraviolet spectrometer is arranged at a predetermined distance from the second quartz optical window, the ultraviolet spectrometer is used to receive the wide-spectrum ultraviolet light passing through the second quartz optical window, and a grating is arranged in the ultraviolet spectrometer, the grating is used to extract ultraviolet light of different frequencies from the wide-spectrum ultraviolet light and measure the intensity of ultraviolet light of each frequency in the ultraviolet light of different frequencies, so as to obtain ultraviolet spectrum data; A controller, wherein the controller is connected to the ultraviolet light source, the ultraviolet spectrometer and a host computer arranged in a monitoring room through cables, the host computer is used to send a user control instruction to the controller, the user control instruction is used to enable the controller to send a corresponding hardware control instruction to the ultraviolet light source or the ultraviolet spectrometer based on the user control instruction, and the hardware control instruction is used to control the measurement process parameters of the acid concentration; the host computer is also used to obtain the ultraviolet spectrum data measured by the ultraviolet spectrometer via the controller; A data processing server, wherein a communication connection is established between the data processing server and the host computer, and the data processing server is used to analyze and process the ultraviolet spectrum data to obtain concentration information of different types of acid solution in the multi-component acid solution to be detected.

2. The online measurement system for multi-component acid solution concentration according to claim 1, characterized in that: A first convex lens is arranged between the ultraviolet light source and the first quartz optical window, and a second convex lens is arranged between the ultraviolet spectrometer and the second quartz optical window; the first convex lens is used to converge the ultraviolet light emitted by the ultraviolet light source toward the first quartz optical window; the second convex lens is used to converge the ultraviolet light emitted from the second quartz optical window and toward the ultraviolet spectrometer.

3. The online measurement system for the concentration of a multi-component acid solution according to claim 1, characterized in that: The ultraviolet light source, the first quartz optical window, the second quartz optical window and the ultraviolet spectrometer are wrapped by an opaque pipeline, and the opaque pipeline is filled with nitrogen.

4. The online measurement system for the concentration of a multi-component acid solution according to claim 1, characterized in that: The anti-corrosion acid liquid pipeline is provided with an electromagnetic valve, and the electromagnetic valve is used to control the acid liquid flow in the anti-corrosion acid liquid pipeline. The electromagnetic valve is connected to the controller through a cable.

5. The online measurement system for the concentration of a multi-component acid solution according to claim 1, characterized in that: The data processing server includes a data processing unit and a data analysis unit. The data processing unit is used to analyze and process the ultraviolet spectrum data at a current moment to obtain the concentration data of each component of the acid solution in the anti-corrosion acid solution pipeline at the current moment; the data analysis unit is used to draw a curve of the change of the concentration of each component of the acid solution over time based on the concentration data of each component of the acid solution in the anti-corrosion acid solution pipeline at different moments.

6. The online measurement system for multi-component acid solution concentration according to claim 1, characterized in that: A first light path protection pipe is arranged between the ultraviolet light source and the first quartz optical window, and the first convex lens is arranged in the first light path protection pipe.

7. The online measurement system for multi-component acid solution concentration according to claim 1, characterized in that: A second light path protection pipe is arranged between the second quartz optical window and the ultraviolet spectrometer, and the second convex lens is arranged in the second light path protection pipe.

8. An online measurement method for the concentration of a multi-component acid solution, applied to the online measurement system for the concentration of a multi-component acid solution in claim 1, characterized in that: The method comprises: The host computer sends a user control instruction to the controller, and the user control instruction is at least used to set the opening time of the ultraviolet light source when the multi-component acid liquid to be detected in the anti-corrosion acid liquid pipeline is detected; the controller converts the user control instruction into a corresponding hardware control instruction; the controller sends the hardware control instruction to the ultraviolet light source; the ultraviolet spectrometer collects the wide-spectrum ultraviolet light passing through the second quartz optical window of the anti-corrosion acid liquid pipeline during the opening time of the ultraviolet light source; the ultraviolet spectrometer extracts ultraviolet light of different frequencies from the wide-spectrum ultraviolet light and measures the intensity of ultraviolet light of each frequency in the ultraviolet light of different frequencies, thereby obtaining ultraviolet spectrum data; the ultraviolet spectrometer sends the ultraviolet spectrum data to the host computer under the control of the controller, and the host computer forwards the ultraviolet spectrum data to the data processing server, the data processing server analyzes and processes the ultraviolet spectrum data to obtain the concentration information of different types of acid liquid in the multi-component acid liquid to be detected, and the data processing server sends the concentration information of the different types of acid liquid to the host computer.

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