Concentration reaction kettle capable of measuring multiple parameters and multi-parameter measuring method thereof

Abstract

The invention relates to the technical field of radioactive waste liquid concentration reaction kettles, in particular to a concentration reaction kettle capable of measuring multiple parameters and a multi-parameter measuring method thereof.The reaction kettle comprises a reaction kettle body, multiple circles of heating coils are arranged at the bottom of an inner cavity of the reaction kettle body, the multiple circles of heating coils are sequentially arranged at intervals in a sleeved mode, and the multiple circles of heating coils are concentrically arranged; a stirring part of the stirring mechanism is arranged in a cavity defined by the inner ring heating coil; the bypass measuring pipe is vertically arranged, the lower end of the bypass measuring pipe is communicated with the lower section of the inner cavity of the reaction kettle body, and the middle part or the upper part of the bypass measuring pipe is communicated with the corresponding section of the inner cavity of the reaction kettle body; the radar liquid level meter is mounted at the upper end of the bypass measuring pipe, and the radar liquid level meter can seal the bypass measuring pipe, so that the liquid level of the concentration reaction kettle can be stably and accurately measured, and the arrangement of measuring equipment is facilitated. The measuring method is based on the reaction kettle.

Description

Technical Field

[0001] The invention relates to the technical field of radioactive waste liquid concentration reactors, and in particular to a concentration reactor capable of measuring multiple parameters and a multi-parameter measuring method thereof. Background Art

[0002] During the operation of nuclear power plants, radioactive boron-containing waste liquid will be generated. Radioactive boron-containing waste liquid is mainly treated by cement solidification after ordinary evaporation. It can only treat boron-containing waste liquid with low boron concentration and cannot significantly reduce the final amount of waste. In order to implement the principle of waste minimization, it is urgent to study the efficient solidification technology of boron-containing waste liquid, that is, to further concentrate the boron-containing waste liquid with low boron concentration into high-concentration boron-containing waste liquid, and then use a small amount of cement and other curing agents for solidification treatment, so as to greatly increase the boron inclusion rate in the solidified body, reduce the final amount of waste, and the performance of the solidified body is better than that of conventional cement solidified body.

[0003] In the high-efficiency solidification technology of boron-containing waste liquid, the core equipment is the concentration reactor. Specifically, the concentration reactor is mainly responsible for the concentration operation of boron-containing waste liquid. The whole process is automated, and the measurement accuracy and reliability requirements of process parameters are particularly high.

[0004] Among them, in the process of concentrating boron-containing waste liquid, the process parameters that need to be monitored mainly include liquid level, density, viscosity and temperature, so as to comprehensively control the boron concentration of the boron-containing waste liquid. However, the internal space of the concentration reactor is limited, and the stirring device adapted to the concentration reactor occupies the middle area of ​​the internal space of the concentration reactor. The rest of the internal space of the reactor is equipped with heat coils, which makes it difficult to install and arrange measurement equipment and ensure the stability and accuracy of process parameter measurement. Summary of the invention

[0005] In view of the technical problems that it is difficult to install and arrange measuring equipment in a concentration reactor and it is difficult to ensure the stability and accuracy of process parameter measurement, the present invention provides a concentration reactor capable of measuring multiple parameters and a multi-parameter measurement method thereof. A bypass measuring tube is installed on the concentration reactor, and the liquid level of the bypass measuring tube is measured by a radar level gauge, so that the liquid level of the concentration reactor can be measured stably and accurately. The radar level gauge does not occupy the internal cavity of the concentration reactor, which is convenient for setting up the measuring equipment.

[0006] The present invention is achieved through the following technical solutions:

[0007] In the first aspect, the present invention provides a concentration reactor capable of measuring multiple parameters, comprising: a reactor body, wherein a plurality of circles of heating coils are arranged at the bottom of the inner cavity of the reactor body, the plurality of circles of heating coils are arranged in sequence at intervals, and the plurality of circles of heating coils are arranged concentrically; a stirring mechanism, wherein a stirring component of the stirring mechanism is arranged in a cavity surrounded by the inner circle of the heating coils; a bypass measuring tube, wherein the bypass measuring tube is arranged vertically, the lower end of the bypass measuring tube is connected to the lower section of the inner cavity of the reactor body, and the middle or upper part of the bypass measuring tube is connected to the corresponding section of the inner cavity of the reactor body; a radar level gauge, wherein the radar level gauge is installed at the upper end of the bypass measuring tube, and the radar level gauge can seal the bypass measuring tube.

[0008] It should be noted that the existing concentration reactor adopts multi-coil steam heating, and the heating coil is concentrically arranged from the inside to the outside (usually three layers are concentrically arranged with the reactor body). Since the boron-containing waste liquid is easy to crystallize during the concentration process and difficult to handle after crystallization, the concentration reactor is also equipped with a stirring device. In order to ensure the uniformity of stirring, the stirring motor is arranged in the middle of the equipment, which occupies a large space, making it difficult to install the measuring equipment on the reactor body. At the same time, during the operation of the concentration reactor, the stirring mechanism is always in operation, and during the concentration process, there is a situation of repeated feeding, and the liquid level of the concentrated liquid will produce a large range of fluctuations, making it difficult to accurately measure the liquid level in the reactor body, and it is impossible to accurately control the material.

[0009] In view of this, the present invention provides a concentration reactor capable of measuring multiple parameters, comprising a reactor body, a stirring mechanism, a bypass measuring tube and a radar level gauge. A plurality of circles of heating coils are arranged at the bottom of the inner cavity of the reactor body. The plurality of circles of heating coils are arranged in sequence and at intervals, and the plurality of circles of heating coils are arranged concentrically, so that the concentrated liquid in the reactor body is fully heated by the plurality of circles of heating coils. The stirring component of the stirring mechanism is arranged in the cavity surrounded by the inner circle of the heating coils, so that the concentrated liquid in the reactor body is uniformly stirred by the stirring mechanism to avoid the concentrated liquid Crystallization, the bypass measuring tube is arranged vertically, and at the same time, the lower end of the bypass measuring tube is connected with the lower section of the inner cavity of the reactor body, and the middle or upper part is connected with the section corresponding to the inner cavity of the reactor body, that is, the bypass measuring tube is connected with the inner cavity of the reactor body, so that the liquid level in the bypass measuring tube can reflect the liquid level in the reactor body, and the radar level gauge is installed at the upper end of the bypass measuring tube, and the radar level gauge can seal the bypass measuring tube, so as to accurately measure the liquid level in the reactor body through the radar level gauge, and at the same time prevent water vapor from overflowing from the bypass measuring tube.

[0010] Among them, the radar level meter measures the liquid level in the bypass measuring tube to reflect the liquid level in the reactor body, which is not affected by the liquid fluid in the reactor body and can measure the liquid level in a timely and accurate manner. At the same time, the radar level meter is installed on the side of the reactor body through the bypass measuring tube, which does not occupy the space of the reactor body, is convenient for the installation of other measuring equipment, and is easy to realize multi-parameter measurement of the liquid in the reactor body.

[0011] In summary, the concentration reactor method provided by the present invention can measure multiple parameters. A bypass measuring tube is installed on the concentration reactor, and the liquid level of the bypass measuring tube is measured by a radar level gauge, so as to stably and accurately measure the liquid level of the concentration reactor. The radar level gauge does not occupy the internal cavity of the concentration reactor, which is convenient for setting up the measuring equipment.

[0012] In an optional embodiment of the present application, the bypass measuring tube is equipped with a heater and an insulation layer to ensure that the temperature in the bypass measuring tube is adapted to the temperature in the reactor body. While avoiding the influence of steam condensation on the liquid level measurement, it can also avoid the crystallization of the concentrated liquid causing the concentrated liquid to be retained, thereby ensuring the accuracy of the liquid level measurement in the reactor body.

[0013] In an optional embodiment of the present application, it also includes: a viscosity measuring part, which is vertically installed in the gap between two adjacent heating coils, and the viscosity measuring part and the heating coil are spaced apart; a cable protection tube, which is vertically arranged, the lower end of the cable protection tube is connected to the viscosity measuring part, and the upper end of the cable protection tube is penetrated and arranged at the upper end of the reactor body; a viscosity display, which is arranged at the upper end of the cable protection tube, the viscosity display is electrically connected to the viscosity measuring part, and the connecting cable between the viscosity display and the viscosity measuring part is passed through the cable protection tube.

[0014] The viscosity measuring device and the viscosity display can be used to detect the concentration of the concentrate in the reactor body online, so as to judge the concentration and quality of the concentrate. The viscosity measuring device is installed vertically in the gap between two adjacent heating coils, which can prevent the concentrate from sticking to the viscosity measuring device, reduce the interference of the viscosity measuring device on the flow of the concentrate, and ensure that the concentrate is heated evenly.

[0015] Among them, the length of the existing viscosity measuring instrument cannot be extended, and cannot extend from the bottom of the reactor body to the top of the reactor body. Therefore, in this application, the viscosity measuring part and the viscosity display instrument are separately set, which not only enables the viscosity measuring part to measure normally, but also facilitates the maintenance of the viscosity measuring instrument. The connecting cable between the viscosity measuring part and the viscosity display instrument is transmitted in the cable protection tube, which can avoid the high temperature in the reactor body from damaging the connecting cable, and can also shield the connecting cable from radiation and signal interference, ensuring the stable and reliable transmission of the measurement signal of the viscosity measuring part, thereby ensuring the accuracy of the concentrated liquid viscosity measurement.

[0016] In an optional embodiment of the present application, a density meter is further included, which is installed on the top of the reactor body; the sensing section of the density meter vertically extends between two adjacent heating coils, and the sensing section of the density meter is spaced apart from the heating coils.

[0017] The density of the concentrated liquid in the reactor body can be detected online by the density measuring device, so as to judge the concentration and quality of the concentrated liquid. The sensing section of the density measuring device is installed vertically in the gap between two adjacent heating coils, which can prevent the concentrated liquid from sticking to the sensing section of the density measuring device, reduce the interference of the sensing section of the density measuring device on the flow of the concentrated liquid, and ensure that the concentrated liquid is heated evenly.

[0018] In an optional embodiment of the present application, it also includes a temperature measuring device, which is installed on the top of the reactor body; the sensing section of the temperature measuring device vertically extends between two adjacent heating coils, and the sensing section of the temperature measuring device is spaced apart from the heating coils.

[0019] The temperature of the concentrated liquid in the reactor body can be detected online by the temperature measuring device, so as to judge the concentration, quality and final concentration time of the concentrated liquid by the viscosity, density and temperature of the concentrated liquid. The sensing section of the temperature measuring device is installed vertically in the gap between two adjacent heating coils, which can prevent the concentrated liquid from sticking to the sensing section of the temperature measuring device, reduce the interference of the sensing section of the temperature measuring device on the flow of the concentrated liquid, and ensure that the concentrated liquid is heated evenly.

[0020] In an optional embodiment of the present application, the viscosity measuring device, the sensing section of the density measuring device and the sensing section of the temperature measuring device are all installed between the two circles of the heating coils adjacent to the stirring mechanism to reduce the space occupied by installing the viscosity measuring device, the density measuring device and the temperature measuring device, ensuring that the viscosity measuring device, the density measuring device and the temperature measuring device can be normally installed.

[0021] In an optional embodiment of the present application, the spacing between the two circles of heating coils adjacent to the stirring mechanism is 60 mm to 70 mm to ensure that the viscosity measuring device, the sensing section of the density measuring device and the sensing section of the temperature measuring device do not interfere with the flow and heating uniformity of the concentrated liquid.

[0022] In an optional embodiment of the present application, along the circumferential direction of the reactor body, the central angle between the viscosity display and the density measuring device, and the central angle between the density measuring device and the temperature measuring device are both 90°, so as to facilitate the installation of the viscosity measuring device, the density measuring device and the temperature measuring device on the reactor body.

[0023] In an optional embodiment of the present application, the connection portion between the cable protection tube and the viscosity measuring member is located above the heating coil to prevent the cable protection tube from interfering with the flow and heating uniformity of the concentrated liquid.

[0024] In a second aspect, the present invention provides a multi-parameter measurement method for a concentration reactor, comprising the following steps: respectively installing a bypass measuring tube, a viscosity display, a density measuring device and a temperature measuring device on the reactor body, so that the lower end of the bypass measuring tube is connected to the lower section of the inner cavity of the reactor body, and the middle or upper part of the bypass measuring tube is connected to the corresponding section of the inner cavity of the reactor body, and a radar level meter is installed at the upper end of the bypass measuring tube and the viscosity measuring piece connected to the viscosity display, the sensing section of the density measuring device and the sensing section of the temperature measuring device are extended to between two adjacent circles of the heating coils in the lower end of the reactor body; adding the liquid to be concentrated into the reactor body, and respectively measuring the liquid level parameter, viscosity parameter, density parameter and temperature parameter corresponding to the liquid to be concentrated by the radar level meter, the viscosity measuring piece, the density measuring device and the temperature measuring device.

[0025] The multi-parameter measurement method of a concentration reactor provided by the present invention comprises the following steps: a bypass measuring tube, a viscosity display, a density measuring device and a temperature measuring device are installed on the reactor body respectively, so that the lower end of the bypass measuring tube is connected to the lower section of the inner cavity of the reactor body, the middle or upper part of the bypass measuring tube is connected to the section corresponding to the inner cavity of the reactor body, a radar level meter is installed at the upper end of the bypass measuring tube, and the viscosity measuring member connected to the viscosity display, the sensing section of the density measuring device and the sensing section of the temperature measuring device are extended to between two adjacent circles of the heating coils in the lower end of the reactor body. Based on the aforementioned multi-parameter measurable concentration reactor, the liquid level parameter, viscosity parameter, density parameter and temperature parameter corresponding to the liquid to be concentrated can be measured respectively, so as to facilitate comprehensive evaluation of the quality of the concentrated liquid and the final time of the concentration process.

[0026] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0027] 1. The present invention provides a concentration reactor capable of measuring multiple parameters, comprising a reactor body, a stirring mechanism, a bypass measuring tube and a radar level gauge. The bottom of the inner cavity of the reactor body is provided with multiple circles of heating coils, which are sequentially spaced and arranged concentrically, so that the concentrated liquid in the reactor body is fully heated by the multiple circles of heating coils. The stirring member of the stirring mechanism is arranged in the cavity surrounded by the inner circle of the heating coils, so that the concentrated liquid in the reactor body is uniformly stirred by the stirring mechanism to avoid crystallization of the concentrated liquid. The bypass measuring tube is arranged vertically, and the lower end of the bypass measuring tube is connected to the lower section of the inner cavity of the reactor body, and the middle or upper part is connected to the section corresponding to the inner cavity of the reactor body, that is, the bypass measuring tube is connected to the inner cavity of the reactor body, so that the liquid level in the bypass measuring tube can reflect the liquid level in the reactor body. The radar level gauge is installed at the upper end of the bypass measuring tube, and the radar level gauge can seal the bypass measuring tube, so that the liquid level in the reactor body is accurately measured by the radar level gauge, and water vapor is prevented from overflowing from the bypass measuring tube.

[0028] 2. The present invention provides a concentration reactor capable of measuring multiple parameters. The radar level meter is installed on the side of the reactor body through a bypass measuring tube, which does not occupy the space of the reactor body, is convenient for setting up other measuring equipment, and is easy to realize multi-parameter measurement of the liquid in the reactor body.

[0029] 3. The multi-parameter measurement method of the concentration reactor provided by the present invention is based on the aforementioned multi-parameter measurable concentration reactor, which can respectively measure the liquid level parameters, viscosity parameters, density parameters and temperature parameters corresponding to the liquid to be concentrated, so as to facilitate the comprehensive evaluation of the quality of the concentrated liquid and the final time of the concentration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can also be obtained based on these drawings without creative work.

[0031] In the attached picture:

[0032] Figure 1 This is a schematic diagram of the structure of a concentration reactor capable of measuring multiple parameters according to an embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the top view of the concentration reactor capable of measuring multiple parameters according to an embodiment of the present invention;

[0034] Figure 3Schematic diagram of the structure of a split viscosity measuring device according to an embodiment of the present invention.

[0035] Reference numerals:

[0036] 1- Reactor body, 2- Heating coil, 3- Radar level gauge, 4- Viscosity display, 5- Cable protection tube, 6- Viscosity measuring device, 7- Density measuring device, 8- Temperature measuring device, 9- Stirring mechanism, 10- Bypass measuring tube, 11- Non-standard flange, 12- Equipment fixing tube. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0039] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0040] In the description of the embodiments of the present application, the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is conventionally placed when in use, or is the orientation or position relationship conventionally understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] It should be noted that nuclear power plants will produce radioactive boron-containing waste liquid during operation. In order to implement the principle of waste minimization, low-concentration radioactive boron-containing waste liquid needs to be concentrated and then solidified to reduce the final amount of waste. For example, the initial boron-containing waste liquid with a boron concentration of 40,000 ppm is transported to a concentrated liquid reactor for heating and evaporation to concentrate it into a concentrated liquid with a boron concentration of 120,000 ppm and then solidified.

[0043] However, the existing concentration reactor adopts multi-coil steam heating, and the heating coil is concentrically arranged from the inside to the outside (usually three layers are concentrically arranged with the reactor body). Since the boron-containing waste liquid is easy to crystallize during the concentration process and difficult to handle after crystallization, the concentration reactor is also equipped with a stirring device. In order to ensure the uniformity of stirring, the stirring motor is arranged in the middle of the equipment, which occupies a large space, making it difficult to install the measuring equipment on the reactor body. At the same time, during the operation of the concentration reactor, the stirring mechanism is always in operation, and during the concentration process, there is a situation of repeated feeding, and the liquid level of the concentrated liquid will produce a large range of fluctuations, making it difficult to accurately measure the liquid level in the reactor body, and it is impossible to accurately control the material.

[0044] In order to solve the above-mentioned problems, the inventor innovatively designed the following technical solution, and the specific implementation solution of this application will be described in detail with reference to the accompanying drawings.

[0045] Example 1

[0046] Combination Figure 1 The present embodiment provides a concentration reactor capable of measuring multiple parameters, comprising: a reactor body 1, wherein a plurality of circles of heating coils 2 are arranged at the bottom of the inner cavity of the reactor body 1, wherein the plurality of circles of heating coils 2 are sequentially spaced and arranged concentrically; a stirring mechanism 9, wherein a stirring component of the stirring mechanism 9 is arranged in a cavity surrounded by the inner circle of the heating coils 2; a bypass measuring tube 10, wherein the bypass measuring tube 10 is arranged vertically, wherein the lower end of the bypass measuring tube 10 is communicated with the lower section of the inner cavity of the reactor body 1, and the middle or upper part of the bypass measuring tube 10 is communicated with the corresponding section of the inner cavity of the reactor body 1; and a radar level gauge 3, wherein the radar level gauge 3 is installed at the upper end of the bypass measuring tube 10, and the radar level gauge 3 can seal the bypass measuring tube 10.

[0047] It can be understood that the number of heating coils 2 is determined according to their size and the size of the inner cavity of the reactor body 1, and three layers are usually arranged concentrically with the reactor body 1 to ensure that after the heating steam is input into the heating coil, the concentrated liquid or concentrated liquid can be fully, evenly and quickly heated. Specifically, the diameters of the multiple coils are 774mm, 638mm and 440mm respectively. At the same time, since the boron-containing waste liquid is easy to crystallize during the concentration process and is difficult to handle after crystallization, the stirring mechanism 9 provided in this embodiment is a double-helix stirring device. And to ensure the uniformity of stirring, the stirring motor of the stirring mechanism 9 is arranged in the middle of the upper end of the reactor body 1, and the stirring member is located in the cavity surrounded by the innermost layer of the heating coil 2, that is, the stirring member is located in the cavity surrounded by the inner ring heating coil 2 with a coil diameter of 440mm.

[0048] In this embodiment, the bypass measuring tube 10 is equipped with a heater and an insulation layer to ensure that the temperature in the bypass measuring tube 10 is adapted to the temperature in the reactor body 1. While preventing steam condensation from affecting the liquid level measurement, it can also prevent the concentrated liquid from being retained due to crystallization, thereby ensuring the accuracy of the liquid level measurement in the reactor body 1. Specifically, the connection position between the lower end of the bypass measuring tube 10 and the inner cavity of the reactor body 1 is at the lower 1 / 3 height position of the heating coil 2, and the middle part of the bypass measuring tube 10 is connected to the maximum liquid level height corresponding to the inner cavity of the reactor body 1, and the upper part is connected to the air section corresponding to the inner cavity of the reactor body 1. The specifications of the bypass measuring tube 10 are

[0049] The bypass measuring tube 10 is usually made of metal, such as stainless steel, and can also be made of other corrosion-resistant and radiation-resistant materials. The size of the bypass measuring tube 10 is determined according to the specific size of the reactor body 1. The heater only needs to be able to heat the side measuring tube, which can be an electric heating wire or an induction heating coil. The insulation layer can be a thermal insulation coating sprayed on the surface of the bypass measuring tube 10, or a thermal insulation material wrapped around the bypass measuring tube 10.

[0050] It is known that the boron-containing waste liquid has a repeated loading process during the concentration process. For accurate material control, accurate measurement of the concentrated liquid level is very important. Considering that the stirring mechanism 9 is always in a stirring state, the fluctuation of the concentrated liquid level will affect the accuracy of the liquid level measurement. If a contact liquid level meter is used, it is difficult to accurately measure the liquid level in the bypass measuring tube 10. In this embodiment, a radar liquid level meter 3 is used to detect the liquid level in real time and accurately. In order to reduce echo interference, a radar wave with a small beam angle is used for measurement, such as a radar wave with a beam angle of 3°.

[0051] It should be understood that the viscosity of the boron-containing concentrated liquid is an important parameter that intuitively reflects the boron concentration. In this regard, the present embodiment also includes: a viscosity measuring part 6, which is vertically installed in the gap between two adjacent heating coils 2, and the viscosity measuring part 6 is spaced apart from the heating coils 2; a cable protection tube 5, which is vertically arranged, the lower end of the cable protection tube 5 is connected to the viscosity measuring part 6, and the upper end of the cable protection tube 5 is penetrated and arranged at the upper end of the reactor body 1; a viscosity display 4, which is arranged at the upper end of the cable protection tube 5, the viscosity display 4 is electrically connected to the viscosity measuring part 6, and the connecting cable between the viscosity display 4 and the viscosity measuring part 6 is passed through the cable protection tube 5.

[0052] Thus, through the cooperation of the viscosity measuring member 6 and the viscosity display 4, the concentration of the concentrated liquid in the reactor body 1 can be detected online, so as to judge the concentration and quality of the concentrated liquid. The viscosity measuring member 6 is vertically installed in the gap between two adjacent heating coils 2, which can prevent the concentrated liquid from sticking to the viscosity measuring member 6, reduce the interference of the viscosity measuring member 6 on the flow of the concentrated liquid, and ensure that the concentrated liquid is heated evenly.

[0053] Among them, the length of the existing viscosity measuring instrument cannot be extended, and cannot extend from the bottom of the reactor body 1 to the top of the reactor body 1. Therefore, in this application, the viscosity measuring part 6 and the viscosity display 4 are separately set, which not only enables the viscosity measuring part 6 to measure normally, but also facilitates the maintenance of the viscosity measuring instrument. The connecting cable between the viscosity measuring part 6 and the viscosity display 4 is transmitted in the cable protection tube 5, which can avoid the high temperature in the reactor body 1 from damaging the connecting cable, and can also shield the connecting cable from radiation and signal interference, ensuring the stable and reliable transmission of the measurement signal of the viscosity measuring part 6, thereby ensuring the accuracy of the concentrated liquid viscosity measurement.

[0054] It can be understood that the connection portion between the cable protection tube 5 and the viscosity measuring element 6 is located above the heating coil 2 to prevent the cable protection tube 5 from interfering with the flow and heating uniformity of the concentrated liquid.

[0055] Combination Figure 3In this embodiment, the viscosity measuring part 6 is welded to the cable protection tube 5 through the upper flange to form an integrated device. The cable protection tube 5 is a Φ133×4 stainless steel tube, and the flange size of the viscosity measuring part 6 is Φ125mm. The cable protection tube 5 is bolted to the upper flange of the non-standard flange 11, which is convenient for the overall installation and disassembly of the viscosity display 4 and the cable protection tube 5. The lower end of the equipment fixing tube 12 is welded to the reactor body 1, and the upper end is welded to the lower flange of the non-standard flange 11. The equipment fixing tube 12 is a Φ159×5 stainless steel tube, and the size of the non-standard flange 11 is Φ250mm.

[0056] In the process of heating, evaporating and cooling the boron-containing waste liquid, in order to better control the boron concentration and avoid damage to the equipment caused by crystallization of the concentrated liquid, relying only on the measured value of the viscometer cannot fully determine the boron concentration of the concentrated liquid. Figure 2 This embodiment also includes a density meter 7, which is installed on the top of the reactor body 1; the sensing section of the density meter 7 vertically extends between two adjacent heating coils 2, and the sensing section of the density meter 7 is spaced apart from the heating coils 2.

[0057] The density of the concentrated liquid in the reactor body 1 can be detected online by the density measuring device 7, so as to judge the concentration and quality of the concentrated liquid. The sensing section of the density measuring device 7 is vertically installed in the gap between two adjacent heating coils 2, which can prevent the concentrated liquid from sticking to the sensing section of the density measuring device 7, reduce the interference of the sensing section of the density measuring device 7 on the flow of the concentrated liquid, and ensure that the concentrated liquid is heated evenly.

[0058] At the same time, this embodiment also includes a temperature measuring device 8, which is installed on the top of the reactor body 1; the sensing section of the temperature measuring device 8 extends vertically between two adjacent heating coils 2, and the sensing section of the temperature measuring device 8 is spaced apart from the heating coils 2.

[0059] Then, the temperature of the concentrated liquid in the reactor body 1 can be detected online by the temperature measuring device 8, so as to judge the concentration, quality and final time of the concentrated liquid by the viscosity, density and temperature of the concentrated liquid. The sensing section of the temperature measuring device 8 is vertically installed in the gap between two adjacent heating coils 2, which can prevent the concentrated liquid from sticking to the sensing section of the temperature measuring device 8, reduce the interference of the sensing section of the temperature measuring device 8 on the flow of the concentrated liquid, and ensure that the concentrated liquid is heated evenly.

[0060] The viscosity measuring member 6, the sensing section of the density measuring device 7 and the sensing section of the temperature measuring device 8 are all installed between the two circles of the heating coils 2 adjacent to the stirring mechanism 9, so as to reduce the space occupied by the viscosity measuring member 6, the density measuring device 7 and the temperature measuring device 8, and ensure that the viscosity measuring member 6, the density measuring device 7 and the temperature measuring device 8 can be installed normally. In other words, the viscosity measuring member 6, the sensing section of the density measuring device 7 and the sensing section of the temperature measuring device 8 are all installed between the first circle of the heating coils 2 and the second circle of the heating coils 2. That is, the sensing sections of the viscosity measuring member 6, the density measuring device 7 and the temperature measuring device 8 are inserted in the interval between the heating coils 2 with a winding diameter of 638 mm and the heating coils 2 with a winding diameter of 440 mm.

[0061] In this embodiment, the spacing between the two circles of the heating coils 2 adjacent to the stirring mechanism 9 is 60 mm to 70 mm to ensure that the viscosity measuring device 6, the sensing section of the density measuring device 7 and the sensing section of the temperature measuring device 8 will not interfere with the flow and heating uniformity of the concentrated liquid.

[0062] Recombination Figure 2 Along the circumferential direction of the reactor body 1, the central angle between the viscosity display 4 and the density measuring device 7, and the central angle between the density measuring device 7 and the temperature measuring device 8 are all 90°, so that the viscosity measuring device 6, the density measuring device 7 and the temperature measuring device 8 can be easily installed on the reactor body 1.

[0063] In summary, the concentration reactor capable of measuring multiple parameters provided by the present invention comprises a reactor body 1, a stirring mechanism 9, a bypass measuring tube 10, a radar level gauge 3, a viscometer, a density meter 7 and a temperature meter 8. Among them, the radar level gauge 3 measures the liquid level in the bypass measuring tube 10 to reflect the liquid level in the reactor body 1, which is not affected by the liquid fluid in the reactor body 1, and can measure the liquid level in a timely and accurate manner, fully ensuring the process safety of the equipment and the total amount of concentrated liquid. At the same time, the radar level gauge 3 is installed on the side of the reactor body 1 through the bypass measuring tube 10, does not occupy the space of the reactor body 1, is convenient for the setting of other measuring equipment, and can realize the multi-parameter measurement of the liquid in the reactor body 1.

[0064] In summary, the concentrating reactor provided in this embodiment that can measure multiple parameters is equipped with a bypass measuring tube 10, and the liquid level of the bypass measuring tube 10 is measured by a radar level meter 3, so as to stably and accurately measure the liquid level of the concentrating reactor, and the radar level meter 3 does not occupy the internal cavity of the concentrating reactor, which is convenient for setting up the measuring equipment.

[0065] In addition, the present embodiment provides a concentration reactor capable of measuring multiple parameters, and there is no interference between the level meter, viscometer, density meter 7 and temperature meter 8, which solves the difficulties in comprehensive measurement of multiple parameters of the concentrated liquid reactor and the difficulty in installing multiple measuring devices, and provides effective technical support for the instrument pipe layout design and heating coil design of the equipment body.

[0066] Example 2

[0067] The present embodiment provides a multi-parameter measurement method for a concentration reactor, comprising the following steps: installing a bypass measuring tube 10, a viscosity display 4, a density measuring device 7 and a temperature measuring device 8 on a reactor body 1, respectively, so that the lower end of the bypass measuring tube 10 is connected to the lower section of the inner cavity of the reactor body 1, and the middle or upper part of the bypass measuring tube 10 is connected to the corresponding section of the inner cavity of the reactor body 1, and installing a radar level meter 3 on the upper end of the bypass measuring tube 10 and extending the viscosity measuring member 6 connected to the viscosity display 4, the sensing section of the density measuring device 7 and the sensing section of the temperature measuring device 8 to between two adjacent circles of the heating coil 2 in the lower end of the reactor body 1; adding the liquid to be concentrated into the reactor body 1, and measuring the liquid level parameter, viscosity parameter, density parameter and temperature parameter corresponding to the liquid to be concentrated by the radar level meter 3, the viscosity measuring member 6, the density measuring device 7 and the temperature measuring device 8, respectively.

[0068] That is to say, the multi-parameter measurement method for the concentration reactor provided in this embodiment is based on the multi-parameter measuring concentration reactor recorded in Example 1, and can respectively measure the liquid level parameters, viscosity parameters, density parameters and temperature parameters corresponding to the liquid to be concentrated, so as to facilitate the comprehensive evaluation of the quality of the concentrated liquid and the final time of the concentration process.

[0069] Specifically, the radar level gauge 3, the measuring tube 10, the viscosity display 4, the cable protection tube 5, the viscosity measuring device 6, the density measuring device 7, and the temperature measuring device 8 constitute a multi-parameter online measuring device for level, viscosity, density, and temperature, which comprehensively controls the boron concentration of the boron-containing waste liquid in the reactor body 1 to be no more than 120,000 ppm. When the boron concentration is ≤120,000 ppm, the liquid level is controlled in the range of 200-700 mm, and the density is ≤1450 kg / m 3 , viscosity ≤250Pa·s, temperature controlled in the range of 50~120℃.

[0070] In a specific operation, when the boron concentration is the critical value of 120000ppm, the liquid level is controlled at 700mm and the density does not exceed 1450kg / m 3 , the viscosity does not exceed 250Pa·s, the temperature is first controlled in the range of 100-120℃, and then cooled to about 50℃.

[0071] Therefore, the multi-parameter measurement method for the concentration reactor provided in this embodiment can control the liquid level of the boron-containing waste liquid repeatedly loaded in the reactor, and according to the viscosity, density and temperature parameters of the boron-containing waste liquid, the four parameters are combined to control the boron concentration not to exceed 120,000 ppm, and comprehensively judge the boron concentration and boron quality of the concentrated liquid. The problem of difficult instrument layout and measurement of the concentrated liquid reactor is solved, and a new measurement idea is provided for similar concentration tank equipment.

[0072] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A concentration reactor capable of measuring multiple parameters, characterized in that: include: A reactor body (1), wherein a plurality of coils of heating tubes (2) are arranged at the bottom of the inner cavity of the reactor body (1), the plurality of coils of heating tubes (2) are sequentially spaced and arranged concentrically; A stirring mechanism (9), wherein a stirring component of the stirring mechanism (9) is arranged in a cavity surrounded by the inner circle of the heating coil (2); A bypass measuring tube (10), the bypass measuring tube (10) being arranged vertically, the lower end of the bypass measuring tube (10) being connected to the lower section of the inner cavity of the reactor body (1), and the middle or upper part of the bypass measuring tube (10) being connected to the corresponding section of the inner cavity of the reactor body (1); A radar level meter (3) is installed at the upper end of the bypass measuring tube (10), and the radar level meter (3) is capable of sealing the bypass measuring tube (10).

2. The multi-parameter measurable concentration reactor according to claim 1, characterized in that: The bypass measuring tube (10) is adapted to be equipped with a heater and a thermal insulation layer.

3. The multi-parameter measurable concentration reactor according to claim 1, characterized in that: Also includes: A viscosity measuring member (6), wherein the viscosity measuring member (6) is vertically mounted in a gap between two adjacent heating coils (2), and the viscosity measuring member (6) is spaced apart from the heating coils (2); A cable protection tube (5), wherein the cable protection tube (5) is arranged vertically, the lower end of the cable protection tube (5) is connected to the viscosity measuring element (6), and the upper end of the cable protection tube (5) is arranged through the upper end of the reactor body (1); A viscosity display (4), wherein the viscosity display (4) is arranged at the upper end of the cable protection tube (5), the viscosity display (4) is electrically connected to the viscosity measuring device (6), and a connecting cable between the viscosity display (4) and the viscosity measuring device (6) is passed through the cable protection tube (5).

4. The concentration reactor capable of measuring multiple parameters according to claim 3, characterized in that: It also includes a density measuring device (7), wherein the density measuring device (7) is installed on the top of the reactor body (1); The sensing section of the density measuring device (7) extends vertically between two adjacent heating coils (2), and the sensing section of the density measuring device (7) is spaced apart from the heating coils (2).

5. The concentration reactor capable of measuring multiple parameters according to claim 4, characterized in that: It also includes a temperature measuring device (8), wherein the temperature measuring device (8) is installed on the top of the reactor body (1); The sensing section of the temperature measuring device (8) extends vertically between two adjacent heating coils (2), and the sensing section of the temperature measuring device (8) is spaced apart from the heating coils (2).

6. The concentration reactor capable of measuring multiple parameters according to claim 5, characterized in that: The viscosity measuring device (6), the sensing section of the density measuring device (7) and the sensing section of the temperature measuring device (8) are all installed between two circles of the heating coil (2) adjacent to the stirring mechanism (9).

7. The concentration reactor capable of measuring multiple parameters according to claim 6, characterized in that: The distance between two circles of the heating coils (2) adjacent to the stirring mechanism (9) is 60 mm to 70 mm.

8. The concentration reactor capable of measuring multiple parameters according to claim 5, characterized in that: Along the circumferential direction of the reactor body (1), the central angle between the viscosity display (4) and the density measuring device (7), and the central angle between the density measuring device (7) and the temperature measuring device (8) are both 90°.

9. The concentration reactor capable of measuring multiple parameters according to claim 3, characterized in that: The connection portion between the cable protection tube (5) and the viscosity measuring element (6) is located above the heating coil (2).

10. A multi-parameter measurement method for a concentration reactor, characterized in that: The following steps are involved: A bypass measuring tube (10), a viscosity display (4), a density measuring device (7) and a temperature measuring device (8) are respectively mounted on the reactor body (1), so that the lower end of the bypass measuring tube (10) is connected to the lower section of the inner cavity of the reactor body (1), and the middle or upper part of the bypass measuring tube (10) is connected to the corresponding section of the inner cavity of the reactor body (1), and a radar level meter (3) is mounted on the upper end of the bypass measuring tube (10), and the viscosity measuring device (6) connected to the viscosity display (4), the sensing section of the density measuring device (7) and the sensing section of the temperature measuring device (8) are extended to between two adjacent circles of the heating coils (2) in the lower end of the reactor body (1); The liquid to be concentrated is added into the reactor body (1), and the liquid level parameter, viscosity parameter, density parameter and temperature parameter corresponding to the liquid to be concentrated are respectively measured by the radar level meter (3), the viscosity measuring element (6), the density measuring device (7) and the temperature measuring device (8).

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