Total organic carbon detection structure integrating high-temperature combustion and ultraviolet persulfate method

Abstract

The utility model discloses a high-temperature combustion and ultraviolet persulfate method integrated total organic carbon detection structure, relates to the field of total organic carbon determination, and aims to solve the problem that equipment needs to be replaced when a total organic carbon detection method is replaced. The high-temperature combustion and ultraviolet persulfate method integrated total organic carbon detection structure comprises an electromagnetic valve, a high-temperature combustion assembly, an ultraviolet persulfate assembly and a condensation pipe, the electromagnetic valve is provided with a sample inlet, a first sample outlet and a second sample outlet; the high-temperature combustion assembly comprises a first inlet and a first outlet, and the first inlet is communicated with the first sample inlet; the ultraviolet persulfate assembly comprises a second inlet and a second outlet, and the second inlet is communicated with the second sample inlet; the condensation pipe is provided with two openings, and the first outlet and the second outlet are respectively communicated with the two openings of the condensation pipe in a sealing manner; any one of the first sample outlet and the second sample outlet is communicated with the sample inlet. According to the scheme, through switching of the first sample inlet and the second sample inlet, switching of the high-temperature combustion assembly and the ultraviolet persulfate assembly is achieved.

Description

Technical Field

[0001] The present application relates to the field of total organic carbon determination, and in particular to a total organic carbon detection structure integrating high-temperature combustion and ultraviolet persulfate method. Background Art

[0002] Total organic carbon (TOC) in a sample is an important indicator of the degree of organic contamination in the sample. High-temperature catalytic oxidation and wet chemical oxidation methods are currently commonly used for TOC determination, depending on their working principles. The high-temperature combustion oxidation method has the advantage of high oxidation efficiency and is suitable for heavily polluted water bodies such as rivers, seawater, and industrial wastewater. However, the measurement results are inaccurate for samples with low total organic carbon content. The UV persulfate method, which combines UV and wet chemical oxidation methods, achieves excellent oxidative degradation effects, making it highly applicable and capable of measuring a wide range of substances.

[0003] However, existing instruments all use a single high-temperature combustion method or wet oxidation method as their working principle. If you need to test samples using different methods, you need to purchase two different devices and switch back and forth, which is inconvenient to use. Utility Model Content

[0004] The present application provides a total organic carbon detection structure integrating high-temperature combustion and ultraviolet persulfate method, which is used to solve the problem of needing to replace equipment when changing the total organic carbon detection method.

[0005] The present application provides a total organic carbon detection structure integrating high-temperature combustion and ultraviolet persulfate method, comprising a solenoid valve, a high-temperature combustion component, a ultraviolet persulfate component and a condenser; the solenoid valve has an inlet and a first and a second sample outlet; the high-temperature combustion component includes a first inlet and a first outlet, the first inlet being connected to the first inlet; the ultraviolet persulfate component includes a second inlet and a second outlet, the second inlet being connected to the second inlet; the condenser has two openings, the first outlet and the second outlet being sealed and connected to the two openings of the condenser respectively; wherein any one of the first sample outlet and the second sample outlet is connected to the inlet.

[0006] The solenoid valve in the present application has a sample inlet and two sample outlets, a first sample outlet and a second sample outlet. The sample inlet can be connected to any one of the first sample outlet and the second sample outlet, so that the sample entering the sample inlet is transported to the high-temperature combustion component or the ultraviolet persulfate component, thereby directly changing the total carbon content detection method of the high-temperature combustion method or the wet oxidation method by switching between the first sample outlet and the second sample outlet, thereby realizing free switching between the two methods through one device, making the detection of the total carbon content more convenient.

[0007] In some embodiments of the present application, a high-temperature combustion assembly includes a combustion furnace and a combustion tube. The combustion tube is partially disposed within the combustion furnace, and a first inlet and a first outlet are openings at both ends of the combustion tube, both of which are located outside the combustion furnace. The combustion furnace and the combustion tube allow a sample to be heated within the combustion tube, thereby enabling the high-temperature combustion method to be used to determine the total carbon content of the sample.

[0008] In some embodiments of the present application, the combustion tube is a straight tube and is arranged vertically. The vertical arrangement of the combustion tube is conducive to the transportation of samples.

[0009] In some embodiments of the present application, a UV persulfate assembly includes a housing, a UV lamp, and an IC reactor. The housing is spaced apart from the solenoid valve. The UV lamp is sealed and mounted on the housing and positioned at the second inlet. The IC reactor is disposed within the housing, with the second inlet and second outlet formed on the IC reactor. The UV lamp and IC reactor enable the total carbon content of a sample to be determined within the reactor by a wet oxidation method.

[0010] In some embodiments of the present application, the UV persulfate assembly further includes a carrier gas outlet disposed on the housing, the carrier gas outlet being connected to the combustion tube via a condenser tube, and the carrier gas outlet can be used to assist in determining the carbon dioxide content of the sample after combustion.

[0011] In some embodiments of the present application, the first bracket further includes a liquid drain port and an acid addition port, both of which are connected to the IC reactor and extend outside the housing. The liquid drain port and the acid addition port can serve the reactor, facilitating the determination of the total carbon content in the sample by wet oxidation.

[0012] In some embodiments of the present application, the integrated high-temperature combustion and UV persulfate method for total organic carbon detection further includes an injection needle disposed between the solenoid valve and the combustion tube, the injection needle communicating with the first sample outlet and the combustion tube. The injection needle can transport the sample between the solenoid valve and the combustion tube to prevent sample leakage.

[0013] In some embodiments of the present application, the first sample outlet and the combustion tube are vertically arranged vertically, and the injection needle is arranged vertically. The vertical arrangement of the injection needle can facilitate sample transport by gravity and can be a straight tube for easy cleaning of the injection needle.

[0014] In some embodiments of the present application, the integrated high-temperature combustion and UV persulfate method for total organic carbon detection further includes a multi-section connecting pipe, each of which connects the second sample outlet to the second inlet, and the second outlet to the condenser. The connecting pipe can connect the second sample outlet to the second inlet, and the second outlet to the condenser, facilitating sample transport and total carbon content detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0016] Figure 1 This is a schematic diagram of a total organic carbon detection structure integrating high-temperature combustion and ultraviolet persulfate method provided in an embodiment of the present application.

[0017] Figure markings: 1-solenoid valve; 11-inlet; 12-first outlet; 13-second outlet; 2-high-temperature combustion assembly; 21-first inlet; 22-first outlet; 23-combustion furnace; 24-combustion tube; 3-UV persulfate assembly; 31-second inlet; 32-second outlet; 33-housing; 34-UV lamp; 35-IC reactor; 36-carrier gas outlet; 37-drain port; 38-acid addition port; 4-condenser; 41-opening; 5-injection needle; 6-connecting tube. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connect" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "connected" used in this application have the meaning of conducting electricity. The specific meanings need to be understood in the context.

[0022] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0023] Total organic carbon (TOC) in a sample is an important indicator of the degree of organic contamination in the sample. High-temperature catalytic oxidation and wet chemical oxidation methods are currently commonly used for TOC determination, depending on their working principles. The high-temperature combustion oxidation method has the advantage of high oxidation efficiency and is suitable for heavily polluted water bodies such as rivers, seawater, and industrial wastewater. However, the measurement results are inaccurate for samples with low total organic carbon content. The UV persulfate method, which combines UV and wet chemical oxidation methods, achieves excellent oxidative degradation effects, making it highly applicable and capable of measuring a wide range of substances.

[0024] However, existing instruments all use a single high-temperature combustion method or wet oxidation method as their working principle. If you need to test samples using different methods, you need to purchase two different devices and switch back and forth, which is inconvenient to use.

[0025] To do this, please refer to Figure 1 The present application provides a total organic carbon detection structure integrating high-temperature combustion and ultraviolet persulfate method, comprising a solenoid valve 1, a high-temperature combustion component 2, an ultraviolet persulfate component 3 and a condenser 4.

[0026] Please refer to Figure 1 The solenoid valve 1 has an inlet 11, a first outlet 12, and a second outlet 13. The solenoid valve 1 is a basic automation component used to control fluids and is an actuator. It can include an electromagnetic part and a valve body. The inlet 11, the first outlet 12, and the second outlet 13 can be two openings 41 of the solenoid valve 1, and the inlet 11 and the first outlet 12, the inlet 11 and the second outlet 13 can be connected within the solenoid valve 1.

[0027] Please refer to Figure 1The high-temperature combustion assembly 2 includes a first inlet 21 and a first outlet 22. The first inlet 21 is connected to the first sample inlet 11. The high-temperature combustion assembly 2 can have a structure for storing samples and for heating. The high-temperature combustion assembly 2 can be adjacent to the first sample outlet 12, and the first inlet 21 can be located below the first sample outlet 12. The high-temperature combustion assembly 2 and the solenoid valve 1 can be fixedly connected by a support frame.

[0028] Please refer to Figure 1 The UV persulfate assembly 3 includes a second inlet 31 and a second outlet 32, wherein the second inlet 31 is connected to the second sample inlet 11. The UV persulfate assembly 3 is a structure for detecting the total carbon content by the UV persulfate wet oxidation method, and can accommodate samples and perform total carbon content determination.

[0029] Please refer to Figure 1 The condenser tube 4 has two openings 41, and the first outlet 22 and the second outlet 32 ​​are respectively in sealed communication with the two openings 41 of the condenser tube 4. The condenser tube 4 can dehydrate and dry the reacted product in the ultraviolet persulfate assembly 3, thereby facilitating the detection of the amount of carbon dioxide in the product of the method. At the same time, the condenser tube 4 can also condense and dehydrate the carbon dioxide in the high-temperature combustion assembly 2, thereby detecting the amount of carbon dioxide in the product of the method.

[0030] Please refer to Figure 1 , wherein any one of the first sample outlet 12 and the second sample outlet 13 is connected to the sample inlet 11. The sample inlet 11 can only be connected to one of the first sample outlet 12 and the second sample outlet 13 at the same time. The first sample outlet 12 and the second sample outlet 13 can be controlled to open and close by the solenoid valve 1, thereby realizing the switching between the high-temperature combustion method and the ultraviolet persulfate method.

[0031] Please refer to Figure 1 The solenoid valve 1 in the present application has a sample inlet 11 and two sample outlets, a first sample outlet 12 and a second sample outlet 13. The sample inlet 11 can be connected to any one of the first sample outlet 12 and the second sample outlet 13, so that the sample entering the sample inlet 11 is transported to the high-temperature combustion component 2 or the ultraviolet persulfate component 3, thereby directly changing the total carbon content detection method of the high-temperature combustion method or the wet oxidation method by switching between the first sample outlet 12 and the second sample outlet 13, thereby realizing free switching between the two methods through one device, making the detection of the total carbon content more convenient.

[0032] Please refer to Figure 1 In some examples, the condenser 4 is a laboratory device used to promote condensation. The condenser 4 is a hard glass product consisting of an inner tube and an outer sleeve. It has three shapes: straight, spherical and serpentine. In this solution, a serpentine condenser 4 can be used, which has a smaller space and better condensation effect.

[0033] Please refer to Figure 1 In some examples, the high-temperature combustion assembly 2 includes a combustion furnace 23 and a combustion tube 24. The combustion tube 24 is partially disposed within the combustion furnace 23, and the first inlet 21 and the first outlet 22 are openings 41 at both ends of the combustion tube 24. The first inlet 21 and the first outlet 22 are both located outside the combustion furnace 23. The combustion furnace 23 and the combustion tube 24 allow the sample to be heated within the combustion tube 24, thereby achieving the high-temperature combustion method for determining the total carbon content in the sample.

[0034] In some examples, the combustion furnace 23 and the combustion tube 24 can be fixedly connected, and a gap can be set between the inner cavity of the combustion furnace 23 and the combustion tube 24 to avoid direct contact between the two. The combustion tube 24 can use a glass tank body or a metal tube body. The combustion furnace 23 can be an electric combustion furnace 23 or other types of combustion furnace 23.

[0035] Please refer to Figure 1 In some examples, the combustion tube 24 is a straight tube and is vertically arranged. The vertical arrangement of the combustion tube 24 is beneficial for transporting the sample.

[0036] In some examples, the combustion tube 24 may be a straight tube, such as a cylindrical tube, a prism, a truncated cone, or a truncated cone. The combustion tube 24 may be vertically arranged so that its axis completely coincides with the direction of gravity, or may be arranged at a certain angle, such as a deviation of no more than 5° between the axis of the combustion tube 24 and the direction of gravity.

[0037] Please refer to Figure 1 In some examples, the UV persulfate assembly 3 includes a housing 33, a UV lamp 34, and an IC reactor 35. The housing 33 is spaced apart from the solenoid valve 1. The UV lamp 34 is sealed and disposed on the housing 33 and is disposed at the second inlet 31. The IC reactor 35 is disposed within the housing 33, and the second inlet 31 and the second outlet 32 ​​are formed on the IC reactor 35. The UV lamp 34 and the IC reactor 35 enable the total carbon content of the sample to be determined within the reactor by a wet oxidation method.

[0038] Illustratively, the housing 33, the UV lamp 34 and the IC reactor 35 are all commonly used structures for detecting the total carbon content by the UV persulfate method, wherein the UV lamp 34 can be used or not depending on the different samples and the different detection base solutions.

[0039] Please refer to Figure 1 In some examples, the UV persulfate assembly 3 further includes a carrier gas outlet 36 disposed on the housing 33. The carrier gas outlet 36 is connected to the combustion tube 24 via the condenser 4, and the carrier gas outlet 36 can assist in determining the carbon dioxide content of the sample after combustion.

[0040] In some examples, the carrier gas outlet 36 can be used to install a detection element to directly detect the amount of product carbon dioxide during ultraviolet persulfate method detection, and can also serve as an oxygen supplement channel when measuring total carbon content during high-temperature combustion method.

[0041] Please refer to Figure 1 In some examples, the first bracket further includes a liquid drain port 37 and an acid addition port 38, both of which are connected to the IC reactor 35 and extend outside the housing 33. The liquid drain port 37 and the acid addition port 38 can serve the reactor to facilitate the determination of the total carbon content in the sample by the wet oxidation method.

[0042] In some examples, the liquid discharge port 37 and the acid addition port 38 are both common structures of the IC reactor 35 , which can be used to inject the reaction liquid, thereby facilitating the detection of the total carbon content in the sample.

[0043] Please refer to Figure 1 In some examples, the total organic carbon detection structure integrating high-temperature combustion and ultraviolet persulfate method further includes an injection needle 5, which is disposed between the solenoid valve 1 and the combustion tube 24. The injection needle 5 connects the first sample outlet 12 and the combustion tube 24. The injection needle 5 can transport the sample between the solenoid valve 1 and the combustion tube 24 to prevent sample leakage.

[0044] In some examples, the injection needle 5 is a structure for transporting sample liquid between the solenoid valve 1 and the combustion tube 24 when detecting the total carbon content by the high-temperature combustion method. This structure can prevent the sample from spilling.

[0045] Please refer to Figure 1 In some examples, the first sample outlet 12 and the combustion tube 24 are vertically arranged vertically, and the injection needle 5 is arranged vertically. The vertical arrangement of the injection needle 5 can facilitate sample delivery by gravity, and the injection needle 5 can be a straight tube, which is convenient for cleaning.

[0046] In some examples, the first sample outlet 12 and the combustion tube 24 are distributed vertically up and down, so that the center of the first sample outlet 12 and the center of the combustion tube 24 are located on the same vertical line, or the first sample outlet 12 can be projected vertically into the combustion tube 24.

[0047] Please refer to Figure 1 In some examples, the total organic carbon detection structure integrating high-temperature combustion and ultraviolet persulfate method further includes a multi-section connecting pipe 6, which respectively connects the second sample outlet 13 with the second inlet 31, and the second outlet 32 ​​with the condenser 4. The connecting pipe 6 can connect the second sample outlet 13 with the second inlet 31, and the second outlet 32 ​​with the condenser 4, facilitating sample transportation and detection of the total carbon content of the sample.

[0048] In some examples, the number of connecting tubes 6 can be set as needed, and the section between the second sample outlet 13 and the second inlet 31 or the second outlet 32 ​​and the condenser 4 can be set as one section, or can be set as multiple sections; the connecting tube 6 can be a glass tube, a metal tube or other tube body.

[0049] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0050] The above is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A total organic carbon detection structure integrating high temperature combustion and ultraviolet persulfate method, characterized in that: include: The solenoid valve has a sample inlet, a first sample outlet, and a second sample outlet; A high-temperature combustion assembly comprises a first inlet and a first outlet, wherein the first inlet is connected to the first injection port; a UV persulfate assembly comprising a second inlet and a second outlet, wherein the second inlet is connected to the second injection port; The condenser has two openings, and the first outlet and the second outlet are respectively in sealed communication with the two openings of the condenser; Wherein, any one of the first sample outlet and the second sample outlet is communicated with the sample inlet.

2. The total organic carbon detection structure integrating high temperature combustion and ultraviolet persulfate method according to claim 1 is characterized in that: The high-temperature combustion assembly includes a combustion furnace and a combustion tube. The combustion tube is partially disposed in the combustion furnace, and the first inlet and the first outlet are openings at both ends of the combustion tube. The first inlet and the first outlet are both located outside the combustion furnace.

3. The total organic carbon detection structure integrating high temperature combustion and ultraviolet persulfate method according to claim 2 is characterized in that: The combustion tube is a straight tube and is arranged vertically.

4. The total organic carbon detection structure integrating high temperature combustion and ultraviolet persulfate method according to claim 2 is characterized in that: The ultraviolet persulfate assembly includes a shell, an ultraviolet lamp and an IC reactor. The shell and the solenoid valve are spaced apart. The ultraviolet lamp is sealed on the shell and is arranged at the second inlet. The IC reactor is arranged in the shell, and the second inlet and the second outlet are formed on the IC reactor.

5. The total organic carbon detection structure integrating high temperature combustion and ultraviolet persulfate method according to claim 4 is characterized in that: The ultraviolet persulfate assembly further includes a carrier gas outlet, which is arranged on the shell.

6. The total organic carbon detection structure integrating high temperature combustion and ultraviolet persulfate method according to claim 5 is characterized in that: The first bracket further includes a liquid discharge port and an acid addition port, both of which are communicated with the IC reactor and extend outside the shell.

7. The total organic carbon detection structure integrating high temperature combustion and ultraviolet persulfate method according to any one of claims 2 to 6, characterized in that: The total organic carbon detection structure integrating high-temperature combustion and ultraviolet persulfate method further includes an injection needle tube, which is arranged between the solenoid valve and the combustion tube, and the injection needle tube is connected to the first sample outlet and the combustion tube.

8. The total organic carbon detection structure integrating high temperature combustion and ultraviolet persulfate method according to claim 7 is characterized in that: The first sample outlet and the combustion tube are vertically distributed up and down, and the injection needle tube is vertically arranged.

9. The total organic carbon detection structure integrating high temperature combustion and ultraviolet persulfate method according to any one of claims 1 to 6, characterized in that: The total organic carbon detection structure integrating high-temperature combustion and ultraviolet persulfate method further includes a plurality of connecting pipes, which respectively connect the second sample outlet with the second inlet, and the second outlet with the condenser.

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