Device for digesting organic matters through double-path purging of ultraviolet persulfate

Abstract

The utility model discloses a device for digesting organic matters by double-path purging ultraviolet persulfate, which relates to the technical field of total organic carbon measurement and comprises an outer reaction chamber and a first carrier gas inlet, one side of the outer reaction chamber is connected with the first carrier gas inlet, one end of the side edge of the first carrier gas inlet close to the outer reaction chamber is connected with a pure water port, and the other end of the first carrier gas inlet close to the outer reaction chamber is connected with a second carrier gas inlet. One end, far away from the outer reaction chamber, of the first carrier gas inlet is connected with an acid adding port. According to the device for digesting the organic matters by double-path purging ultraviolet persulfate, the outer reaction chamber and the inner reaction chamber are arranged into an integrated structure, are made of a high-transmittance quartz material, and are matched with a plurality of inlet and outlet structures and ultraviolet lamps, so that the cooperative operation of ultraviolet oxidation and wet oxidation can be realized, and mutual complementation and mutual promotion are realized; meanwhile, through double-path carrier gas purging, a sample and persulfate fully react in a dynamic environment, and in addition, ultraviolet light generated by an ultraviolet lamp can also participate in decomposition, so that the oxidative degradation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of total organic carbon measurement, in particular to a device for double-path purging and ultraviolet persulfate digestion of organic matters. Background Technique

[0002] Total organic carbon in a sample is an important indicator reflecting the degree of organic matter pollution of the sample. There are various measurement methods for total organic carbon, which have the advantages of sensitivity, rapidity, low cost, etc. TOC detection is widely used in industries such as environmental detection, water treatment, petrochemical, pharmaceutical, microelectronics and semiconductor, and power plants worldwide. For the determination of total organic carbon in a sample, according to different working principles, high-temperature catalytic oxidation method and wet chemical oxidation method are generally adopted at present. The ultraviolet persulfate method is the synergistic effect of ultraviolet oxidation method and wet oxidation method, and has good oxidation and degradation effect, so it has strong applicability and a wide measurable range.

[0003] At present, the instruments sold on the market for measuring TOC in samples by the ultraviolet persulfate method have disadvantages such as complex device, insufficient reaction, poor repeatability, etc., which make the cost of detecting samples relatively high and the accuracy of detection results relatively limited.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a device for double-path purging and ultraviolet persulfate digestion of organic matters is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a device for double-path purging and ultraviolet persulfate digestion of organic matters to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: A device for double-path purging and ultraviolet persulfate digestion of organic matters, including an outer reaction chamber and a first carrier gas inlet. One side of the outer reaction chamber is connected with the first carrier gas inlet, and a pure water inlet is connected to the side of the first carrier gas inlet near one end of the outer reaction chamber. Moreover, an acid adding port is connected to the end of the first carrier gas inlet far from the outer reaction chamber. And a second carrier gas inlet is connected to the side of the outer reaction chamber far from the first carrier gas inlet. At the same time, a sample adding port is connected to the surface of one end of the second carrier gas inlet. A liquid discharge port is connected to the surface of one end of the outer reaction chamber, and a carrier gas outlet is connected to the surface of the end of the outer reaction chamber far from the liquid discharge port. And an inner reaction chamber is arranged inside the outer reaction chamber, and an ultraviolet lamp is arranged inside the inner reaction chamber.

[0007] Further, the first carrier gas inlet is internally communicated with the inside of the outer reaction chamber, and both the pure water inlet and the acid adding port are internally communicated with the inside of the first carrier gas inlet.

[0008] Further, the second carrier gas inlet is internally communicated with the inside of the outer reaction chamber, and the sample adding port is internally communicated with the inside of the second carrier gas inlet.

[0009] Further, the liquid discharge port and the carrier gas outlet are respectively connected to two ends of the outer reaction chamber, and both the liquid discharge port and the carrier gas outlet are in communication with the interior of the outer reaction chamber.

[0010] Further, the outer reaction chamber and the inner reaction chamber are not connected to each other, and the ultraviolet lamp is movably inserted into the interior of the inner reaction chamber.

[0011] Further, the outer reaction chamber and the inner reaction chamber are integrally structured, and one end of the inner reaction chamber is provided with an open structure.

[0012] Further, the outer reaction chamber, the first carrier gas inlet, the pure water inlet, the acid addition port, the second carrier gas inlet, the sample addition port, the liquid discharge port, the carrier gas outlet, and the inner reaction chamber are all integrally structured and made of high-transparency quartz material.

[0013] Further, fixing frames are installed at both outer ends of the outer reaction chamber, and the fixing frames are structured with upper and lower splicing and are connected and fixed using bolts.

[0014] The utility model provides a device for dual-channel purging ultraviolet persulfate to decompose organic matters, having the following beneficial effects:

[0015] 1. In the utility model, the outer reaction chamber and the inner reaction chamber are designed with an integrated structure using high-transparency quartz material, and the internal structures between them do not interfere with each other. When utilizing the internal space of the outer reaction chamber and injecting persulfate into it to react with the sample, at the same time, the ultraviolet lamp is placed inside the inner reaction chamber, and the 185-nm ultraviolet light generated by the ultraviolet lamp passes through the inner reaction chamber made of high-purity quartz glass into the interior of the outer reaction chamber, enabling the sample to be simultaneously exposed within the irradiation range of the ultraviolet light. This allows the sample to fully react with persulfate in a dynamic environment while also making full contact with the ultraviolet light, enabling the ultraviolet light to participate in the decomposition synchronously, thereby improving the oxidation and degradation effect. By using the above structure, on the one hand, the manufacturing cost of the entire device can be reduced, thereby reducing the operation cost of detection. On the other hand, the convenient operation of the ultraviolet persulfate method can be fully realized, ensuring sufficient reaction and accurate experimental results. The high-purity quartz material can ensure that more than 80% of the 185-nm ultraviolet light has a light transmittance, guaranteeing the effectiveness of the ultraviolet light. In addition, the ultraviolet lamp uses a tubular UV ultraviolet lamp to ensure full irradiation of the sealed cavity without dead angles, and a cold-start UV ultraviolet lamp is selected, thus ensuring that repeated starts have less impact on its lifespan.

[0016] 2. In this utility model, by adopting an open structure design at one end of the inner reaction chamber, the ultraviolet lamp can be flexibly and quickly inserted into or removed from the inside of the inner reaction chamber, so as to facilitate the observation and replacement of the ultraviolet lamp and ensure the smoothness of the detection operation process. In addition, by arranging the inner reaction chamber in a sunken structure inside the outer reaction chamber, the outer reaction chamber is horizontally penetrated by the inner reaction chamber, and the two present a two-stage structure. In this way, when the ultraviolet lamp is placed inside the inner reaction chamber and operates, the inside of the outer reaction chamber can be completely exposed within the irradiation range of the ultraviolet lamp, eliminating the dead angle of ultraviolet irradiation, so as to ensure that the sample can fully contact with ultraviolet light and react maliciously. The first carrier gas inlet and the second carrier gas inlet connected to both sides of the outer reaction chamber. This dual-channel gas inlet structure design accelerates the stirring of the liquid in the tube, achieving the effect of no dead angle and more sufficient reaction. On the other hand, by controlling the switch of the ultraviolet lamp and replacing the type of acid in the outer reaction chamber, different detection functions of the device can be realized, thus further ensuring the flexibility and practicality of the device. Brief Description of the Drawings

[0017] Figure 1 is the axonometric view structural schematic diagram of the body of a device for dual-channel purging ultraviolet persulfate digestion of organic matter of this utility model;

[0018] Figure 2 is the exploded view structural schematic diagram of the body of a device for dual-channel purging ultraviolet persulfate digestion of organic matter of this utility model;

[0019] Figure 3 is the internal structure schematic diagram of the body of a device for dual-channel purging ultraviolet persulfate digestion of organic matter of this utility model;

[0020] Figure 4 is the partial sectional view structural schematic diagram of the body of a device for dual-channel purging ultraviolet persulfate digestion of organic matter of this utility model.

[0021] In the figure: 1. Outer reaction chamber; 2. First carrier gas inlet; 3. Pure water port; 4. Acid addition port; 5. Second carrier gas inlet; 6. Sampling port; 7. Drain port; 8. Carrier gas outlet; 9. Inner reaction chamber; 10. Ultraviolet lamp; 11. Fixed rack. Detailed Description of the Preferred Embodiments

[0022] The following further describes in detail the embodiments of this utility model in conjunction with the drawings and examples. The following examples are used to illustrate this utility model, but cannot be used to limit the scope of this utility model.

[0023] As Figures 1 to 4As shown in the figure, a device for double-path purging and ultraviolet persulfate digestion of organic matter includes an outer reaction chamber 1 and a first carrier gas inlet 2. One side of the outer reaction chamber 1 is connected to the first carrier gas inlet 2. Near one end of the outer reaction chamber 1 on the side of the first carrier gas inlet 2, a pure water inlet 3 is connected. And at the end of the first carrier gas inlet 2 far from the outer reaction chamber 1, an acid addition port 4 is connected. Moreover, on the side of the outer reaction chamber 1 far from the first carrier gas inlet 2, a second carrier gas inlet 5 is connected. At the same time, on the surface of one end of the second carrier gas inlet 5, a sample addition port 6 is connected. On the surface of one end of the outer reaction chamber 1, a liquid discharge port 7 is connected. And on the surface of the end of the outer reaction chamber 1 far from the liquid discharge port 7, a carrier gas outlet 8 is connected. Inside the outer reaction chamber 1, an inner reaction chamber 9 is provided. And inside the inner reaction chamber 9, an ultraviolet lamp 10 is provided. The outer reaction chamber 1 and the inner reaction chamber 9 are not connected to each other. And the ultraviolet lamp 10 is movably inserted into the inner reaction chamber 9. The outer reaction chamber 1 and the inner reaction chamber 9 are integrally structured. And one end of the inner reaction chamber 9 is of an open structure. The outer reaction chamber 1, the first carrier gas inlet 2, the pure water inlet 3, the acid addition port 4, the second carrier gas inlet 5, the sample addition port 6, the liquid discharge port 7, the carrier gas outlet 8, and the inner reaction chamber 9 are all integrally structured and made of high-transparency quartz material. When using the internal space of the outer reaction chamber 1 and injecting persulfate into it to react with the sample, at the same time, the ultraviolet lamp 10 is placed inside the inner reaction chamber 9. The 185-nm ultraviolet light generated by the ultraviolet lamp 10 passes through the inner reaction chamber 9 made of high-purity quartz glass and enters the inside of the outer reaction chamber 1, so that the sample can be simultaneously exposed to the ultraviolet irradiation range. While the sample fully reacts with persulfate in a dynamic environment, it can also make full contact with ultraviolet light, enabling the ultraviolet light to participate in the decomposition synchronously, thereby improving the oxidation and degradation effect.

[0024] As Figures 1 to 4 shown, the first carrier gas inlet 2 is internally connected to the outer reaction chamber 1. And the pure water inlet 3 and the acid addition port 4 are both internally connected to the first carrier gas inlet 2. The second carrier gas inlet 5 is internally connected to the outer reaction chamber 1. And the sample addition port 6 is internally connected to the second carrier gas inlet 5. The liquid discharge port 7 and the carrier gas outlet 8 are respectively connected to both ends of the outer reaction chamber 1. And the liquid discharge port 7 and the carrier gas outlet 8 are both internally connected to the outer reaction chamber 1. Fixed brackets 11 are installed at both outer ends of the outer reaction chamber 1. And the fixed brackets 11 are of an up-and-down splicing structure and are connected and fixed with bolts. By designing one end of the inner reaction chamber 9 to be of an open structure, the ultraviolet lamp 10 can be flexibly and quickly placed into or taken out of the inner reaction chamber 9, so as to facilitate observing and replacing the ultraviolet lamp 10. And the first carrier gas inlet 2 and the second carrier gas inlet 5 connected to both sides of the outer reaction chamber 1. This double-path gas inlet structure design speeds up the stirring of the liquid in the tube, achieving the effect of no dead angle and more sufficient reaction.

[0025] In summary, as Figures 1 to 4As shown, when using the device for dual-channel purging ultraviolet persulfate digestion of organic matter, first connect the ultraviolet lamp 10 to an external power supply, then insert the ultraviolet lamp 10 into the inner reaction chamber 9. Then, use the structure of the fixing frame 11 that is spliced up and down to install it at both ends of the outer reaction chamber 1 respectively. Subsequently, use bolts to penetrate the fixing frame 11 and fix the entire device on the operating table to ensure the stability of the entire device during the subsequent operation process;

[0026] Then, connect the first carrier gas inlet 2, pure water inlet 3, acid addition port 4, second carrier gas inlet 5, sample addition port 6, liquid discharge port 7, and carrier gas outlet 8 to external equipment in sequence to ensure the feeding and discharging of various materials and reagents, etc.;

[0027] After the above preparatory operations are completed, at this time, inject persulfate into the interior of the outer reaction chamber 1 through the acid addition port 4. Subsequently, inject an appropriate volume of the pre-prepared sample into the interior of the outer reaction chamber 1 through the sample addition port 6. At this time, after the sample contacts the persulfate, a reaction will occur. Since persulfide is a strong oxidant, the ultraviolet lamp 10 will be started synchronously at this time and generate ultraviolet light of 185 nm. Under the irradiation of the ultraviolet lamp 10, strongly oxidizing OH- will be generated. OH- will undergo an oxidation reaction with the organic carbon in the sample, and then CO2 will be generated;

[0028] Moreover, the high-energy ultraviolet light of 185 nm emitted by the ultraviolet lamp 10 can also promote the photolysis of water to form OH- radicals. At this time, the OH- radicals react with the organic matter in water, that is, TOC, and are oxidized into CO2 and H2O. Then, the generated CO2 is transported to the interior of the NDIR through the carrier gas outlet 8 for measurement, so as to obtain the concentration of total organic carbon;

[0029] During the entire operation process, in order to ensure that the ultraviolet light emitted by the ultraviolet lamp 10 can be effectively used, a layer of tin foil can be wrapped on the outer surface of the outer reaction chamber 1 in advance. Utilize the reflectivity of the tin foil to increase the utilization rate of ultraviolet light. During the progress of the oxidation reaction, the first carrier gas inlet 2 and the second carrier gas inlet 5 can be used to enable external gas to quickly enter the interior of the outer reaction chamber 1, so as to make the acid solution and the sample in the interior of the outer reaction chamber 1 mix more quickly and fully by using the injected gas, thereby achieving the effect of no dead angle and full reaction.

[0030] The embodiments of the present utility model are given for the purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A dual-path purging UV persulfate digestion device for organic matter, comprising an outer reaction chamber (1) and a first carrier gas inlet (2), characterized in that: One side of the outer reaction chamber (1) is connected to a first carrier gas inlet (2), and an end of the side of the first carrier gas inlet (2) close to the outer reaction chamber (1) is connected to a pure water inlet (3), and an end of the first carrier gas inlet (2) away from the outer reaction chamber (1) is connected to an acid addition port (4), and a side of the outer reaction chamber (1) away from the first carrier gas inlet (2) is connected to a second carrier gas inlet (5), and one end surface of the second carrier gas inlet (5) is connected to a sample addition port (6), one end surface of the outer reaction chamber (1) is connected to a liquid discharge port (7), and an end surface of the outer reaction chamber (1) away from the liquid discharge port (7) is connected to a carrier gas outlet (8), and an inner reaction chamber (9) is arranged inside the outer reaction chamber (1), and an ultraviolet lamp (10) is arranged inside the inner reaction chamber (9).

2. A dual-path purge UV persulfate digestion device for organic matter according to claim 1, characterized in that: The first carrier gas inlet (2) is interconnected with the interior of the outer reaction chamber (1), and the pure water inlet (3) and the acid addition inlet (4) are both interconnected with the interior of the first carrier gas inlet (2).

3. A dual-path purge UV persulfate digestion device for organic matter according to claim 1, characterized in that: The second carrier gas inlet (5) is in communication with the interior of the outer reaction chamber (1), and the sample addition port (6) is in communication with the interior of the second carrier gas inlet (5).

4. The dual-path purge UV persulfate digestion device for organic matter according to claim 1, characterized in that: The liquid discharge port (7) and the carrier gas outlet (8) are respectively connected to two ends of the outer reaction chamber (1), and the liquid discharge port (7) and the carrier gas outlet (8) are both interconnected with the interior of the outer reaction chamber (1).

5. The dual-path purge UV persulfate digestion device for organic matter according to claim 1, characterized in that: The outer reaction chamber (1) and the inner reaction chamber (9) are not connected to each other, and the ultraviolet lamp (10) is movably inserted inside the inner reaction chamber (9).

6. A dual-path purge UV persulfate digestion device for organic matter according to claim 1, characterized in that: The outer reaction chamber (1) and the inner reaction chamber (9) are arranged as an integral structure, and one end of the inner reaction chamber (9) is arranged in an open structure.

7. The dual-path purge UV persulfate digestion device for organic matter according to claim 1, characterized in that: The outer reaction chamber (1), the first carrier gas inlet (2), the pure water inlet (3), the acid addition port (4), the second carrier gas inlet (5), the sample addition port (6), the liquid discharge port (7), the carrier gas outlet (8), and the inner reaction chamber (9) are all arranged in an integrated structure and are made of a highly transparent quartz material.

8. The dual-path purge UV persulfate digestion device for organic matter according to claim 1, characterized in that: Fixing frames (11) are installed at both ends of the outer side of the outer reaction chamber (1), and the fixing frames (11) are arranged in an upper and lower splicing structure and are connected and fixed using bolts.

Images