Device for on-line determination of pH value of organic reaction material

Abstract

The utility model relates to a device for measuring the pH value of an organic reaction material on line, which comprises a process pipeline, a branch is arranged on the process pipeline, a first connecting pipe is connected to the branch, a first quantitative pipe is arranged on the first connecting pipe, the outlet end of the first connecting pipe is connected with a mixing piece, and the outlet end of the mixing piece is connected with a second quantitative pipe. A second connecting pipe is connected to the mixing part, a second quantitative pipe is arranged on the second connecting pipe, a sixth valve and a seventh valve are arranged at the inlet end of the second connecting pipe, the second connecting pipe is communicated with an external water pipe and an external air pipe through the sixth valve and the seventh valve, and an eighth valve and a ninth valve are arranged at the outlet end of the second connecting pipe; the outlet end of the eighth valve is connected with a liquid discharging pipe, the outlet end of the ninth valve is connected with a mixing piece, a drainage piece is arranged on the mixing piece, and a detection piece is connected to the drainage piece. Through mutual cooperation of the quantitative tube, the mixing piece, the drainage piece and the detection piece, online detection of the pH value of the organic reaction material is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for on-line determination of organic reaction material pH value. BACKGROUND

[0002] pH testing is applied in many fields, including water treatment, environmental monitoring, food processing, pharmaceuticals, etc. In water treatment, pH can be used to monitor the acidity and redox state of drinking water, swimming pool water, and wastewater, etc. to ensure water quality meets standard requirements. In environmental monitoring, pH can be used to assess the health status and pollution level of natural water bodies. In addition, in the food, chemical and pharmaceutical industries, pH can be used to monitor the acid-base conditions during the process to ensure product quality and safety. The advantages of online testing equipment include real-time monitoring capability, high precision and easy to use, which can provide real-time monitoring of the acidity and alkalinity of the solution in the reaction pipeline, and timely adjustment of the production process; therefore the pH online analyzer is a very important analyzer, which has important significance for guaranteeing production quality and improving work efficiency. When the detected material is an aqueous solution, the pH online analyzer can be used for direct testing, but when the process reaction material is an organic substance, the pH value of the organic reaction material cannot be directly detected, and the water-soluble acid-base ions in the organic substance need to be extracted with water first, and then the pH value is tested. This index can also provide the acid-base conditions of the reaction material for the process, but the general pH online analyzer cannot complete the detection. SUMMARY

[0003] This section is intended to summarize some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the present utility model.

[0004] The technical problem to be solved by the present utility model is how to realize online detection of the pH value of organic reaction material.

[0005] To solve the above technical problems, the utility model provides technical scheme as follows: A device for on-line determination of pH value of organic reaction material, including process pipeline, be provided with branch on process pipeline, be connected with first connecting pipe on branch, be provided with first dosing tube on first connecting pipe, be provided with valve one and valve two on branch, the export end of first connecting pipe is connected with mixing piece, be used to the extraction of water -soluble acid base ion in organic reaction material, the export end of first connecting pipe is provided with valve five, be connected with second connecting pipe on mixing piece, be provided with second dosing tube on second connecting pipe, the import end of second connecting pipe is provided with valve six and valve seven, second connecting pipe is linked with external water pipe and external air pipe respectively through valve six and valve seven, the export end of second connecting pipe is provided with valve eight and valve nine, the export end of valve eight is connected with liquid discharge pipe, the export end of valve nine is connected with mixing piece, mixing piece is connected with liquid discharge pipe, be provided with drainage piece on mixing piece, be used to the drainage of water -soluble organic matter, be connected with detection piece on drainage piece, be used to the pH value detection of organic reaction material, detection piece is connected with liquid discharge pipe.

[0006] As a preferred scheme of the device for on-line determination of pH value of organic reaction material, wherein: the mixing piece includes a mixing tank, a stirrer, a third connecting pipe and a valve eleven, the outlet end of the valve five and the outlet end of the valve nine are communicated with the liquid inlet of the mixing tank, the stirrer is arranged in the mixing tank to fully stir the organic matter and water in the mixing tank, the third connecting pipe is arranged at the liquid outlet at the bottom of the mixing tank, and the third connecting pipe is connected with the liquid discharge pipe through the valve eleven to facilitate discharging the liquid in the mixing tank.

[0007] As a preferred scheme of the device for on-line determination of pH value of organic reaction material, wherein: the drainage piece includes a fourth connecting pipe, a third dosing tube, a valve ten, a fifth connecting pipe and a valve twelve, the fourth connecting pipe is connected with the third connecting pipe, the third dosing tube is arranged on the fourth connecting pipe, the valve ten is arranged at one end of the fourth connecting pipe close to the liquid outlet of the third dosing tube, one end of the fifth connecting pipe is arranged on the mixing tank, the other end of the fifth connecting pipe is connected with the detection piece, and the valve twelve is arranged on the fifth connecting pipe to facilitate draining the water-soluble organic matter in the mixing tank into the measuring pool.

[0008] As a kind of preferred scheme of the device for measuring pH value of organic reaction material online described in the utility model, wherein: the detecting piece includes measuring cell, pH meter, sixth connecting pipe and valve thirteen, the liquid inlet of the measuring cell is connected with the liquid outlet of the fourth connecting pipe and fifth connecting pipe respectively, the pH meter is arranged in the measuring cell, to facilitate the pH value detection of water-soluble organic matter in measuring cell, the sixth connecting pipe is arranged at the liquid outlet at the bottom of the measuring cell, the sixth connecting pipe is connected with the liquid discharge pipe by the valve thirteen, to facilitate the waste liquid in measuring cell to be discharged.

[0009] As a kind of preferred scheme of the device for measuring pH value of organic reaction material online described in the utility model, wherein: the top of the first connecting pipe is provided with valve three and valve four, the valve three and valve four are connected with external atmosphere and external air pipe respectively, if organic reaction material is high-pressure process, then pressure relief can be carried out by opening valve three, to realize atmospheric equilibrium in the first quantitative pipe, then valve four is opened, and air is used as carrier gas to transport organic reaction material in the first quantitative pipe into mixing tank.

[0010] As a kind of preferred scheme of the device for measuring pH value of organic reaction material online described in the utility model, wherein: the volume ratio between the first quantitative pipe and the second quantitative pipe is 1:1, to facilitate water-soluble acid-base ion in organic reaction material to be extracted.

[0011] As a kind of preferred scheme of the device for measuring pH value of organic reaction material online described in the utility model, wherein: the volume of the third quantitative pipe is 50-80% of the volume of the second quantitative pipe, to avoid mixing organic phase in upper layer into water phase in measuring cell, so as to ensure the accuracy of pH value detection of organic reaction material.

[0012] As a kind of preferred scheme of the device for measuring pH value of organic reaction material online described in the utility model, wherein: the outside of the mixing piece, second connecting pipe, second quantitative pipe, liquid discharge pipe, drainage piece and detecting piece is provided with explosion-proof piece, to play the role of explosion prevention, and ensure the safety of detection.

[0013] Beneficial effect: through the mutual cooperation between quantitative pipe, mixing piece, drainage piece and detecting piece, the online detection of pH value of organic reaction material is realized, not only the quality of production is guaranteed, but also the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the premise of not deviating from the concept of the present application.

[0015] Figure 1 It is a whole structure schematic view of the device for on-line measuring pH value of organic reaction material.

[0016] In the figure: 1, process pipeline; 2, branch; 3, first connecting pipe; 4, first quantitative pipe; 5, second connecting pipe; 6, second quantitative pipe; 7, liquid discharge pipe; 8, mixing tank; 9, stirrer; 10, third connecting pipe; 11, fourth connecting pipe; 12, third quantitative pipe; 13, fifth connecting pipe; 14, measuring cell; 15, pH meter; 16, sixth connecting pipe; 17, explosion-proof part; S1, valve one; S2, valve two; S3, valve three; S4, valve four; S5, valve five; S6, valve six; S7, valve seven; S8, valve eight; S9, valve nine; S10, valve ten; S11, valve eleven; S12, valve twelve; S13, valve thirteen. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.

[0018] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without deviating from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0019] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. In this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment.

[0020] Embodiments

[0021] Reference Figure 1The embodiment provides a device for on-line determination of pH value of organic reaction material, which comprises a process pipeline 1, a branch 2 arranged on the process pipeline 1, a first connecting pipe 3 connected to the branch 2, a first metering pipe 4 arranged on the first connecting pipe 3, a valve one S1 and a valve two S2 arranged on the branch 2, a mixing piece connected to an outlet end of the first connecting pipe 3 and used for extraction of water-soluble acid-base ions in the organic reaction material, a valve five S5 arranged on the outlet end of the first connecting pipe 3, a second connecting pipe 5 connected to the mixing piece, a second metering pipe 6 arranged on the second connecting pipe 5, a valve six S6 and a valve seven S7 arranged on an inlet end of the second connecting pipe 5, the second connecting pipe 5 being communicated with an external water pipe and an external air pipe through the valve six S6 and the valve seven S7 respectively, a valve eight S8 and a valve nine S9 arranged on an outlet end of the second connecting pipe 5, a liquid discharge pipe 7 connected to an outlet end of the valve eight S8, the outlet end of the valve nine S9 being connected with the mixing piece, the mixing piece being connected with the liquid discharge pipe 7, a flow guiding piece arranged on the mixing piece and used for flow guiding of water-soluble organic matter, a detection piece connected to the flow guiding piece and used for pH value detection of the organic reaction material, and the detection piece being connected with the liquid discharge pipe 7.

[0022] The device mainly comprises a process pipeline 1, a branch 2, a first connecting pipe 3, a first quantitative pipe 4, a mixing element, a second connecting pipe 5, a second quantitative pipe 6, a liquid discharge pipe 7, a drainage element and a detection element, wherein the process pipeline 1 is the reaction pipeline of the organic reaction material, two branches 2 are connected on the process pipeline 1, the first connecting pipe 3 is connected on the two branches 2, the outlet end of the first connecting pipe 3 is provided with a valve five S5, the first connecting pipe 3 is connected with the liquid inlet of the mixing element through the valve five S5, so that the organic reaction material in the first connecting pipe 3 enters the mixing element, the first quantitative pipe 4 is installed on the first connecting pipe 3, so as to control the amount of the organic reaction material added into the mixing element, and the valve one S1 and the valve two S2 are installed on the two branches 2, respectively, opening the valve one S1 and the valve two S2 can make the organic reaction material in the process pipeline 1 enter the first quantitative pipe 4 through the branch 2, the first connecting pipe 3 and the first quantitative pipe 4, the inlet end of the second connecting pipe 5 is provided with a valve six S6, the second connecting pipe 5 is connected with the external water pipe through the valve six S6, so that the external water can enter the second connecting pipe 5, the outlet end of the second connecting pipe 5 is provided with a valve nine S9, the second connecting pipe 5 is connected with the liquid inlet of the mixing element through the valve nine S9, the inlet end of the second connecting pipe 5 is provided with a valve seven S7, the second connecting pipe 5 is connected with the external air pipe through the valve seven S7, so that the water in the second connecting pipe 5 can enter the mixing element, the water and the organic reaction material are fully mixed, so as to extract the water-soluble acid-base ions in the organic reaction material, the second quantitative pipe 6 is installed on the second connecting pipe 5, so as to control the amount of the water added into the mixing element, the liquid outlet of the mixing element is connected with the liquid discharge pipe 7, so as to discharge the liquid in the mixing element, the outlet end of the second connecting pipe 5 is provided with a valve eight S8, the second connecting pipe 5 is connected with the liquid discharge pipe 7 through the valve eight S8, not only can make the external water fill the second quantitative pipe 6, but also can discharge the excess water in the second connecting pipe 5, the mixing element is connected with the detection element through the drainage element, so as to drain the water-soluble organic matter (water phase) in the mixing element to the detection element, the on-line detection of the pH value of the organic reaction material can be realized through the detection element, not only guarantees the quality of production, but also improves the detection efficiency, and the detection element is connected with the liquid discharge pipe 7, so as to discharge the liquid in the detection element.

[0023] Specifically, the mixing element comprises a mixing tank 8, a stirrer 9, a third connecting pipe 10 and a valve eleven S11, the outlet end of the valve five S5 and the outlet end of the valve nine S9 are connected with the liquid inlet of the mixing tank 8, the stirrer 9 is arranged in the mixing tank 8, the third connecting pipe 10 is arranged at the liquid discharge port of the bottom of the mixing tank 8, and the third connecting pipe 10 is connected with the liquid discharge pipe 7 through the valve eleven S11.

[0024] The mixing member mainly comprises the mixing tank 8, the stirrer 9, the third connecting pipe 10 and the valve eleven S11. The outlet end of the first connecting pipe 3 and the outlet end of the second connecting pipe 5 are connected with the liquid inlet of the mixing tank 8 through the valve five S5 and the valve nine S9 respectively, so that the organic reaction material in the first connecting pipe 3 and the water in the second connecting pipe 5 are both mixed in the mixing tank 8. The stirrer 9 is installed in the mixing tank 8, so as to fully stir the organic reaction material and the water in the mixing tank 8. The third connecting pipe 10 is connected with the liquid outlet at the bottom of the mixing tank 8. The outlet end of the third connecting pipe 10 is connected with the discharge pipe 7 through the valve eleven S11, so as to discharge the liquid in the mixing tank 8 into the discharge pipe 7.

[0025] Specifically, the drainage member comprises the fourth connecting pipe 11, the third metering pipe 12, the valve ten S10, the fifth connecting pipe 13 and the valve twelve S12. The fourth connecting pipe 11 is connected with the third connecting pipe 10. The third metering pipe 12 is arranged on the fourth connecting pipe 11. The valve ten S10 is arranged on the fourth connecting pipe 11 near the liquid outlet of the third metering pipe 12. One end of the fifth connecting pipe 13 is arranged on the mixing tank 8. The other end of the fifth connecting pipe 13 is connected with the detection member. The valve twelve S12 is arranged on the fifth connecting pipe 13.

[0026] The drainage member mainly comprises the fourth connecting pipe 11, the third metering pipe 12, the valve ten S10, the fifth connecting pipe 13 and the valve twelve S12. The inlet end of the fourth connecting pipe 11 is connected with the third connecting pipe 10. The outlet end of the fourth connecting pipe 11 is connected with the detection member. The third metering pipe 12 is installed on the fourth connecting pipe 11, so as to control the amount of the water phase added into the detection member, and ensure the accuracy of the pH value detection of the organic reaction material. The valve ten S10 is installed on the fourth connecting pipe 11 near the liquid outlet of the third metering pipe 12, so as to control the outflow of the water phase in the third metering pipe 12. The fifth connecting pipe 13 is connected with the detection member at the middle upper part of the mixing tank 8. The valve twelve S12 is installed on the fifth connecting pipe 13, so as to control the outflow of the liquid in the fifth connecting pipe 13. Since the positions of the water phase are different after the mixing and standing of different organic reaction materials and water, if the water phase is in the lower layer of the mixing tank 8, the valve ten S10 is opened, so that the water phase flows into the third connecting pipe 10, and then flows into the detection member through the fourth connecting pipe 11 and the third metering pipe 12. If the water phase is in the upper layer of the mixing tank 8, the valve twelve S12 is opened, so that the water phase flows into the detection member through the fifth connecting pipe 13, thereby realizing the conveying of the water phase in the mixing tank 8 into the detection member.

[0027] Specifically, the detection member comprises a measuring tank 14, a pH meter 15, a sixth connecting pipe 16 and a valve thirteen S13, the liquid inlet of the measuring tank 14 is communicated with the liquid outlet of the fourth connecting pipe 11 and the fifth connecting pipe 13 respectively, the pH meter 15 is arranged in the measuring tank 14, the sixth connecting pipe 16 is arranged at the liquid outlet at the bottom of the measuring tank 14, and the sixth connecting pipe 16 is connected with the liquid discharge pipe 7 through the valve thirteen S13.

[0028] The detection member mainly comprises a measuring tank 14, a pH meter 15, a sixth connecting pipe 16 and a valve thirteen S13, the liquid inlet of the measuring tank 14 is communicated with the liquid outlet of the fourth connecting pipe 11 and the fifth connecting pipe 13 respectively, so that the water phase in the third quantitative pipe 12 and the fifth connecting pipe 13 enters the measuring tank 14, the pH meter 15 is arranged in the measuring tank 14, so as to directly detect the pH value of the water-soluble organic matter in the measuring tank 14, the sixth connecting pipe 16 is connected at the liquid outlet at the bottom of the measuring tank 14, and the sixth connecting pipe 16 is connected with the liquid discharge pipe 7 through the valve thirteen S13, so as to discharge the waste liquid in the measuring tank 14, and it needs to be noted that, in order to realize real-time monitoring of the pH value of the organic reaction material, the pH meter 15 can be connected to a data acquisition system, so as to realize real-time monitoring of the change of the pH value, thereby better controlling the production process and ensuring the production quality of the product.

[0029] Further, the top of the first connecting pipe 3 is provided with a valve three S3 and a valve four S4, and the valve three S3 and the valve four S4 are respectively communicated with the external atmosphere and the external air pipe.

[0030] In the embodiment, the valve three S3 and the valve four S4 are arranged at the top of the first connecting pipe 3, the first connecting pipe 3 is communicated with the external atmosphere through the valve three S3, the first connecting pipe 3 is communicated with the external air pipe through the valve four S4, if the organic reaction material is a high-pressure process, the valve three S3 can be opened to release pressure, so that the first quantitative pipe 4 is in a normal pressure state, and then the valve four S4 is opened, and the air is used as a carrier gas to transport the organic reaction material in the first quantitative pipe 4 to the mixing tank 8.

[0031] Further, the volume ratio between the first quantitative pipe 4 and the second quantitative pipe 6 is 1:1.

[0032] In the embodiment, the volume ratio between the first quantitative pipe 4 and the second quantitative pipe 6 is designed as 1:1, so that the organic reaction material and water are fully mixed, and the water-soluble acid-base ions in the organic reaction material are better extracted.

[0033] Further, the volume of the third quantitative pipe 12 is 50-80% of the volume of the second quantitative pipe 6.

[0034] The third dosing tube 12 is designed to have a volume of 50-80% of the volume of the second dosing tube 6, so as to avoid mixing of the upper organic phase into the aqueous phase entering the measuring cell 14, thereby ensuring the accuracy of the pH detection of the organic reaction material. It is to be noted that the fifth connecting tube 13 does not need to be provided with a dosing tube, and the inlet end of the fifth connecting tube 13 is located at the middle upper portion of the mixing tank 8. When the valve twelve S12 is opened, the aqueous phase in the upper layer will directly enter the measuring cell 14 through the fifth connecting tube 13. Since the organic phase is in the lower layer of the mixing tank 8, the aqueous phase entering the measuring cell 14 will not be mixed with the organic phase.

[0035] Further, the mixing member, the second connecting tube 5, the second dosing tube 6, the liquid discharge tube 7, the drainage member and the detection member are externally provided with an explosion-proof member 17.

[0036] In the present embodiment, the mixing member, the second connecting tube 5, the second dosing tube 6, the liquid discharge tube 7, the drainage member and the detection member are externally provided with an explosion-proof member 17, i.e. the mixing member, the second connecting tube 5, the second dosing tube 6, the liquid discharge tube 7, the drainage member and the detection member are subjected to explosion-proof treatment, so as to play a certain explosion-proof role, thereby ensuring the safety of the detection. In the present embodiment, the explosion-proof member 17 is an explosion-proof shell. In other embodiments, the explosion-proof member 17 can also be other explosion-proof members.

[0037] The embodiment takes the high-pressure process of organic reaction material as an example, all the valves are in closed state before use, when in use, first open valve one S1 and valve two S2, so that the organic reaction material in the process pipeline 1 fills the first metering pipe 4, open valve thirteen S13, drain the accumulated water in the measuring pool 14, after the first metering pipe 4 is filled, close valve one S1 and valve two S2, and slowly open valve three S3, carry out pressure relief, so that the first metering pipe 4 is in normal pressure state, then close valve three S3, open valve four S4 and valve five S5, the external air enters into the first connecting pipe 3 as carrier gas, pushes the organic reaction material in the first metering pipe 4 into the mixing tank 8, then open valve six S6 and valve eight S8, after the external water fills the second metering pipe 6, close valve six S6 and valve eight S8, open valve seven S7 and valve nine S9, the external air enters into the second connecting pipe 5 as carrier gas, pushes the water in the second metering pipe 6 into the mixing tank 8, then start the stirrer 9, fully stir the organic reaction material and water, after a certain time of standing, stratify, the standing time can be determined according to the actual stratification time, because the density of water and organic reaction material is different, if the water phase in the mixing tank 8 is below the mixing tank 8, open valve ten S10, so that the water phase entering into the third metering pipe is drained into the measuring pool 14, close valve ten S10, if the water phase is above the mixing tank 8, open valve twelve S12, so that a certain amount of water phase is drained into the measuring pool 14, close valve twelve S12, then measure the pH value of the water phase by using the pH meter, and transmit the value to the data acquisition system, so as to monitor the change of the pH value in real time, after the measurement is completed, open valve eleven S11 and valve thirteen S13, drain the waste liquid in the mixing tank 8 and the measuring pool 14, and open valve seven S7 and valve nine S9, use air to flush and replace the pipeline, after completion, close valve seven S7, open valve six S6, valve nine S9 and valve ten S10, so that a certain amount of liquid is injected into the measuring pool 14, to protect the sensor of the pH meter, and close valve thirteen S13, finally open valve four S4, valve eight S8 and valve eleven S11, air purge is carried out on the pipeline, after the air purge is completed, close all the valves, wait for the next measurement, it should be noted that the opening and closing of all the valves in the embodiment is realized by computer automatic control.

[0038] It should be noted that the above embodiment is only used to illustrate the technical scheme of the present application, not to limit it, although the present application has been described in detail with reference to the preferred embodiment, those skilled in the art should understand that the technical scheme of the present application can be modified or replaced by equivalent, without departing from the spirit and scope of the technical scheme of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A device for online determination of pH value of organic reaction materials, characterized in that: The invention comprises a process pipeline (1), wherein the process pipeline (1) is provided with a branch (2), the branch (2) is connected to a first connecting pipe (3), the first connecting pipe (3) is provided with a first quantitative pipe (4), the branch (2) is provided with a valve 1 (S1) and a valve 2 (S2), the outlet end of the first connecting pipe (3) is connected to a mixing piece for extracting water-soluble acid and base ions in organic reaction materials, the outlet end of the first connecting pipe (3) is provided with a valve 5 (S5), the mixing piece is connected to a second connecting pipe (5), the second connecting pipe (5) is provided with a second quantitative pipe (6), and the inlet end of the second connecting pipe (5) is provided with a Valve six (S6) and valve seven (S7), the second connecting pipe (5) is connected to the external water pipe and the external air pipe respectively through the valve six (S6) and valve seven (S7), the outlet end of the second connecting pipe (5) is provided with a valve eight (S8) and a valve nine (S9), the outlet end of the valve eight (S8) is connected to the drain pipe (7), the outlet end of the valve nine (S9) is connected to the mixing element, the mixing element is connected to the drain pipe (7), the mixing element is provided with a drainage element for draining water-soluble organic matter, the drainage element is connected to a detection element for detecting the pH value of the organic reaction material, and the detection element is connected to the drain pipe (7).

2. The device for online determination of pH value of organic reaction materials according to claim 1, wherein: The mixing element comprises a mixing tank (8), an agitator (9), a third connecting pipe (10) and a valve eleven (S11), the outlet end of the valve five (S5) and the outlet end of the valve nine (S9) are both connected to the liquid inlet of the mixing tank (8), the agitator (9) is arranged in the mixing tank (8), the third connecting pipe (10) is arranged at the discharge port at the bottom of the mixing tank (8), and the third connecting pipe (10) is connected to the discharge pipe (7) through the valve eleven (S11).

3. The device for online determination of pH value of organic reaction materials according to claim 2, characterized in that: The drainage component includes a fourth connecting pipe (11), a third quantitative pipe (12), a valve ten (S10), a fifth connecting pipe (13) and a valve twelve (S12), wherein the fourth connecting pipe (11) is connected to the third connecting pipe (10), the third quantitative pipe (12) is arranged on the fourth connecting pipe (11), the valve ten (S10) is arranged at one end of the fourth connecting pipe (11) close to the liquid outlet of the third quantitative pipe (12), one end of the fifth connecting pipe (13) is arranged on the mixing tank (8), the other end of the fifth connecting pipe (13) is connected to the detection component, and the fifth connecting pipe (13) is provided with a valve twelve (S12).

4. The device for online determination of pH value of organic reaction materials according to claim 3, characterized in that: The detection component includes a measuring pool (14), a pH meter (15), a sixth connecting pipe (16) and a valve thirteen (S13), wherein the liquid inlet of the measuring pool (14) is respectively connected to the liquid outlets of the fourth connecting pipe (11) and the fifth connecting pipe (13), the pH meter (15) is arranged in the measuring pool (14), the sixth connecting pipe (16) is arranged at the liquid outlet at the bottom of the measuring pool (14), and the sixth connecting pipe (16) is connected to the discharge pipe (7) through the valve thirteen (S13).

5. The device for online determination of pH value of organic reaction materials according to claim 1, characterized in that: A valve three (S3) and a valve four (S4) are provided at the top of the first connecting pipe (3), and the valve three (S3) and the valve four (S4) are respectively connected to the external atmosphere and the external air pipe.

6. The device for online determination of pH value of organic reaction materials according to claim 1, wherein: The volume ratio between the first quantitative tube (4) and the second quantitative tube (6) is 1:

1.

7. The device for online determination of pH value of organic reaction materials according to claim 3, characterized in that: The volume of the third quantitative tube (12) is 50-80% of the volume of the second quantitative tube (6).

8. The device for online determination of pH value of organic reaction materials according to claim 1, characterized in that: Explosion-proof components (17) are provided on the exterior of the mixing component, the second connecting pipe (5), the second quantitative pipe (6), the liquid discharge pipe (7), the drainage component, and the detection component.

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