Phosphorous acid total organic carbon detection device

Abstract

The utility model provides a phosphorous acid total organic carbon detection device, which relates to the technical field of total organic carbon detection devices, and comprises a pretreatment component, an acidification bin and a dilution bin communicated with the lower part of the acidification bin, a first one-way valve and a second one-way valve are fixedly arranged at the bottoms of the acidification bin and the dilution bin respectively, and an acid storage tank and a pure water tank which can be controlled to be opened and closed are communicated with one sides of the acidification bin and the dilution bin respectively; a combustion pipe communicated with the bottom of the dilution bin is contained in the high-temperature oxidation assembly, a cracking furnace is fixedly arranged outside the combustion pipe in a surrounding mode, and an oxygen inlet pipe is arranged on the side wall of the cracking furnace in a communicated mode; the condenser and the dryer are communicated with the outlet end of the combustion pipe; the detection assembly comprises a detection bin communicated with the outlet end of the dryer, a high-sensitivity sensor for detecting the CO2 content and converting the CO2 content into an electric signal is arranged in the detection bin, and one side of the high-sensitivity sensor is electrically connected with a processor for processing the electric signal and outputting a detection result.

Description

TECHNICAL FIELD

[0001] The utility model relates to total organic carbon detection device technical field especially relates to a phosphorous acid total organic carbon detection device. BACKGROUND

[0002] The chemical enterprise detects total organic carbon (TOC) in phosphorous acid mainly by high-temperature combustion oxidation method or wet chemical oxidation method, needs to remove inorganic carbon interference in phosphorous acid after acidification pretreatment, carries out quantitative analysis to residual organic carbon, and its core function lies in ensuring the purity of phosphorous acid raw materials and products, especially in high-precision fields such as electronic chemicals, flame retardants, trace organic impurities can cause catalyst poisoning, material performance degradation or process flow out of control, at the same time, TOC detection can trace production pollution source, optimize synthesis process, reduce byproduct generation, and meet the control requirements of environmental protection regulations on harmful organic emission.

[0003] However, the detection of TOC in phosphorous acid in the chemical enterprise at present usually relies on artificial testing of the laboratory technician, needs to go through sampling, sample sending, pretreatment, instrument calibration, data calculation and other links, and the operation is tedious and time-consuming, the detection result often has hysteresis, it is difficult to meet the timely detection demand, and the detection precision is easily influenced by the experience of the laboratory technician, inorganic carbon residues or organic carbon loss are easily caused by insufficient acidification or oxidation efficiency fluctuation in the treatment process of phosphorous acid sample, result deviation is caused, when facing high-concentration or multiple batches of samples, artificial error is easily introduced, high-throughput detection is difficult to realize, and the detection efficiency is low, these problems restrict the detection timeliness and reliability, and it is urgent to develop automatic and strong anti-interference online detection technology to adapt to the production demand of phosphorous acid UTILITY MODEL CONTENTS

[0004] In view of the defects in the prior art, the utility model provides a total organic carbon detection device for phosphorous acid, which solves the problems of tedious and time-consuming manual detection operation, hysteresis, detection precision easily affected and low detection efficiency in the prior art.

[0005] According to the embodiment of the utility model, a total organic carbon detection device for phosphorous acid comprises:

[0006] A pretreatment assembly comprises an acidification bin and a dilution bin, the dilution bin is communicatively arranged below the acidification bin, the top of the acidification bin is communicatively provided with a sample inlet, the bottoms of the acidification bin and the dilution bin are fixedly provided with a first one-way valve and a second one-way valve respectively, and the side of the acidification bin and the side of the dilution bin are communicatively provided with controllably openable and closable acid storage tanks and pure water tanks respectively;

[0007] A high-temperature oxidation assembly comprises a combustion pipe, the inlet end of the combustion pipe is detachably and communicatively connected with the bottom of the dilution bin, a cracking furnace is fixedly arranged around the combustion pipe, and an oxygen inlet pipe is communicatively arranged on the side wall of the cracking furnace.

[0008] A purification assembly includes a condenser detachably connected to the outlet end of the combustion tube, and a dryer is connected to the outlet end of the condenser.

[0009] The detection component includes a detection chamber connected to the outlet of the dryer. A high-sensitivity sensor is fixedly installed inside the detection chamber to detect the CO2 content and convert it into an electrical signal. A processor is electrically connected to one side of the high-sensitivity sensor to process the electrical signal and output the detection result.

[0010] The technical principle of this invention is as follows: During detection, phosphorous acid sample is poured into the inlet and enters the acidification chamber. The acid storage tank is opened to allow the acid solution inside to enter the acidification chamber for mixing and acidification. The first one-way valve is opened, and the acidified sample enters the dilution chamber. Then, the pure water tank is opened to allow the pure water inside to enter the dilution chamber for mixing and dilution of the acidified sample. The pyrolysis furnace is started to heat the combustion tube. The second one-way valve is opened, and the diluted sample enters the combustion tube. The liquid sample turns into a gaseous state at high temperature, and carbon elements are oxidized to CO2. The high-temperature gas enters the condenser, where some water vapor is cooled into condensate, and the remaining water vapor is absorbed by the dryer. Finally, the cooled and dried gas enters the detection chamber, where CO2 is captured by a high-sensitivity sensor. The high-sensitivity sensor converts the accurate CO2 content into an electrical signal and transmits it to the processor. After processing, the processor outputs the detection result of the total organic carbon content.

[0011] Furthermore, a first gas valve with metering function is fixedly installed on the pipeline between the acid storage tank and the acidification chamber, and a second gas valve with metering function is fixedly installed on the pipeline between the pure water tank and the dilution chamber.

[0012] Furthermore, the combustion tube is fixedly installed on the pipeline between the dilution chamber and the condenser via a quick-connect flange, and the quick-connect flange is inserted and fixed at both ends of the combustion tube.

[0013] Furthermore, sealing rings are fixedly arranged around the inner walls of both ends of the combustion tube. The sealing rings are made of high-temperature resistant material and abut against the outer wall of the quick-connect flange during insertion.

[0014] Furthermore, a microporous filter is also fixedly installed on the pipeline at the sample inlet end of the combustion tube.

[0015] Furthermore, a sample delivery pump is connected between the microporous filter and the combustion tube, and an atomizing nozzle is fixedly installed at the inlet of the combustion tube.

[0016] Furthermore, a halogen collecting tube is fixedly installed on the pipeline at the sample outlet end of the combustion tube.

[0017] Furthermore, a halogen removal tube is connected in parallel on the pipeline between the dryer and the detection chamber, and a solenoid valve is fixedly installed at the parallel branch of the halogen removal tube at the sample inlet end.

[0018] Furthermore, a spiral guide plate is fixedly installed around the pipeline between the acidification chamber and the dilution chamber.

[0019] Furthermore, a cooling water tank is fixedly installed on one side of the condenser, and the cooling water tank is connected to the condenser through an inlet pipe and an outlet pipe.

[0020] Compared with existing technologies, this invention has the following advantages: By employing pretreatment components, high-temperature oxidation components, purification components, and detection components working in tandem, the phosphorous acid sample is processed sequentially in a linear series process and modular partitioning. This ensures seamless integration of sample processing, oxidation, detection, and control, allowing liquid samples to be rapidly acidified and diluted upon entering the device, thus removing the influence of inorganic carbon. The remaining organic carbon is then oxidized at high temperature and converted into a gaseous state. After being cooled and dried, the gaseous sample enters the detection chamber for detection. Throughout the detection process, the organic carbon in the initial phosphorous acid sample is converted into CO2 and captured and detected by a highly sensitive sensor, thereby quickly and accurately obtaining the precise carbon content of the sample. The above detection process can achieve automated detection, is simple and convenient to operate, does not rely on manual operating experience, is fully enclosed, requires no human intervention, is less affected by external interference factors, and has high detection accuracy and efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0022] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model.

[0023] Figure 3 This is an assembly diagram of the pretreatment component and the high-temperature oxidation component according to an embodiment of the present invention.

[0024] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle

[0025] In the above attached diagrams: 1. Chamber; 11. Sample inlet; 12. Control panel; 13. Chamber door; 2. Acid storage tank; 21. First gas valve; 22. Acidification chamber; 23. First check valve; 24. Spiral guide plate; 3. Pure water tank; 31. Second gas valve; 32. Dilution chamber; 33. Second check valve; 34. Microporous filter; 341. Micropores; 342. Connecting flange; 4. Pyrolysis furnace; 41. Sample pump; 42. 43. Oxygen inlet pipe; 44. Halogen collection pipe; 45. Miniature diaphragm pump; 46. Combustion pipe; 47. Quick-connect flange; 48. Sealing ring; 59. Condenser; 50. Condenser inlet pipe; 51. Drain pipe; 52. Cool water tank; 53. Water inlet pipe; 53. Water outlet pipe; 54. Condenser outlet pipe; 60. Dryer; 61. Solenoid valve; 62. Ordinary air inlet pipe; 63. Halogen removal pipe; 70. Detection chamber; 71. Pressure relief pipe. Detailed Implementation

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0027] like Figure 1 As shown in the figure, this utility model embodiment proposes a total organic carbon detection device for phosphorous acid. The detection device includes a box 1, which is horizontally arranged. The top of the box 1 is provided with a sample inlet 11 that connects the inside and outside. The sample inlet 11 is preferably configured as a funnel-shaped structure that is wider at the top and narrower at the bottom to facilitate the pouring of phosphorous acid sample. The sample inlet 11 can also be connected to a high-precision injection pump through a rubber hose. The injection pump is preferably a corrosion-resistant ceramic plunger pump, so that the sample is directly delivered to the sample inlet 11 through the pump body. A box door 13 is hinged to one side of the box 1. An operation screen 12 is provided on the box door 13. The operation screen 12 is electrically connected to the internal components of the device and is used to control the start and stop of the internal components and display the monitoring parameters of the sample.

[0028] like Figures 1-3As shown, in this embodiment, the device further includes a pretreatment component located at the front end, comprising an acidification chamber 22 and a dilution chamber 32. The dilution chamber 32 is connected below the acidification chamber 22, and a first one-way valve 23 for controlling the opening and closing of the pipeline connecting the two is provided. The top of the acidification chamber 22 is connected to the sample inlet 11, and an acid storage tank 2 is connected to one side of the acidification chamber 22. The acid storage tank 2 is provided with an acid inlet for replenishing acid. A first gas valve 21 with metering function is fixedly installed on the pipeline between the acid storage tank 2 and the acidification chamber 22. The acid storage tank 2 is preferably fixedly installed at a position higher than the acidification chamber 22, so that the acid in the acid storage tank 2 can enter the acidification chamber 22 by gravity. Alternatively, a quantitative acid injection pump can be equipped on the pipeline between the acid storage tank 2 and the acidification chamber 22 to make the acid ratio and dosage of the acid more accurate. The solution can acidify the phosphorous acid sample to remove the influence of inorganic carbon on the results and release bound organic carbon for subsequent processing. A pure water tank 3 is connected to one side of the dilution chamber 32. The pure water tank 3 is equipped with an inlet for replenishing pure water. A second gas valve 31 with metering function is fixedly installed on the pipeline between the pure water tank 3 and the dilution chamber 32. The pure water tank 3 is preferably fixedly installed at a position higher than the dilution chamber 32, so that the pure water in the pure water tank 3 can enter the dilution chamber 32 by gravity. Alternatively, a quantitative pure water injection pump can be equipped on the pipeline between the pure water tank 3 and the dilution chamber 32 to make the dilution ratio and dosage of pure water to the sample more accurate. The valves and pumps used are electrically connected to the operation panel 12 to realize automated detection. It should be noted that the containers, pipelines and valves that come into contact with the acid solution must be made of acid-resistant materials.

[0029] like Figures 1-3As shown, in this embodiment, to further enhance the sample acidification effect, a pH meter can be installed in the acidification chamber 22 to monitor the pH of the acidified sample. The pH meter is electrically connected to the control panel. Furthermore, the pH meter can be linked with the acid injection pump to set a pH value to reverse-drive the acid injection pump to replenish acid, making the acidification more thorough. A spiral guide plate 24 is fixedly installed around the pipeline between the acidification chamber 22 and the dilution chamber 32. The spiral guide plate 24 is located below the first one-way valve 23. The spiral guide plate 24 and... All external pipelines are made of acid-resistant materials. The spiral guide plate 24 can enhance turbulence, increase the contact area and contact time between the acid and the sample, and make the two mix more evenly. To further increase the dilution effect of the sample, a stirring mechanism can be set in the dilution chamber 32. The stirring blade driven by the motor can stir the diluted sample to ensure thorough mixing. It should be noted that when diluting, pure water should be injected into the dilution chamber 32 first according to the dilution ratio, and then the acidified sample should be controlled to enter the dilution chamber 32 to avoid violent reaction between the acid and pure water, which could damage the dilution chamber 32.

[0030] like Figures 1-3 As shown, in this embodiment, the device further includes a high-temperature oxidation component located after the pretreatment component. The high-temperature oxidation component includes a combustion tube 45. The inner wall of the combustion tube 45 can be coated with a platinum-rhodium bimetallic catalyst to increase the oxidation effect on carbon in the sample. The inlet end of the combustion tube 45 is detachably connected to the bottom of the dilution chamber 32. A second one-way valve 33 is fixedly installed on the connecting pipe between the two to control the opening and closing of the pipe. A pyrolysis furnace 4 is fixedly installed around the combustion tube 45. One or more burners are fixedly installed outside the pyrolysis furnace 4. An oxygen inlet pipe 42 is connected to the side wall of the pyrolysis furnace 4 for supplying oxygen. The burners can heat the combustion tube 45. The pyrolysis furnace 4 can use gradient temperature control technology to make the temperature distribution more uniform. A temperature sensor can also be embedded and fixedly installed in the pyrolysis furnace 4 and electrically connected to the control panel for real-time detection of the furnace temperature. The liquid sample is oxidized into a gaseous state in the combustion tube 45 and enters the subsequent processing component.

[0031] like Figures 1-3As shown, in this embodiment, the device further includes a purification component located behind the high-temperature oxidation component, which includes a condenser 5. The lower and upper parts of the side wall of the condenser 5 are respectively provided with a condensation inlet pipe 51 and a condensation outlet pipe 54 communicating with the inside and outside. The condensation inlet pipe 51 is detachably connected to the outlet end of the combustion pipe 45. A dryer 6 is connected to the condensation outlet pipe 54 of the condenser 5. A cool water tank 53 is fixedly installed on one side of the condenser 5 inside the housing 1. The cool water tank 53 is connected to the combustion pipe 45 via an inlet pipe 531 and an outlet pipe 532. The condenser 5 is connected, and the inlet pipe 531 is located below the outlet pipe 532. The cooling water tank 53 is equipped with a circulation pump for cooling water circulation. The gaseous sample moves from bottom to top in the condenser 5, opposite to the direction of movement of the cooling water, thereby achieving a better condensation effect. After the water vapor in the gaseous sample is cooled into condensate, it is discharged from the drain pipe 52 at the bottom of the condenser 5. The remaining gaseous sample enters the dryer 6, which absorbs the water vapor that has not turned into condensate, eliminating the influence of water vapor on the final test results.

[0032] like Figures 1-3 As shown, in this embodiment, the combustion tube 45 is further fixedly installed on the pipeline between the dilution chamber 32 and the condenser 5 via a quick-connect flange 451. The quick-connect flange 451 is inserted and fixed at both ends of the combustion tube 45, and a sealing ring 452 is fixedly installed around the inner wall of both ends of the combustion tube 45. The sealing ring 452 is made of high-temperature resistant material. When inserted, the sealing ring 452 abuts against the outer wall of the quick-connect flange 451. In addition, the outer wall of the quick-connect flange 451 and the inner wall of the combustion tube 45 can also be provided with mutually engaging external threads and internal threads for screwing, so as to achieve the purpose of quick disassembly. Based on the above configuration, at least one end of the pyrolysis furnace 4 is provided with a detachable inspection port for removing the combustion tube 45.

[0033] like Figures 1-3 As shown, in this embodiment, the device further includes a detection component located behind the purification component, which includes a detection chamber 7. A pressure relief pipe 71 is provided on the top of the detection chamber 7. The detection chamber 7 is connected to the outlet end of the dryer 6. A high-sensitivity sensor is fixedly installed inside the detection chamber 7. A processor is electrically connected to one side of the high-sensitivity sensor. The high-sensitivity sensor can use a narrow-band filter and be equipped with an indium gallium arsenide detector to accurately detect the CO2 content and convert the CO2 concentration into an electrical signal. The processor calculates and processes the electrical signal and outputs it.

[0034] like Figures 1-4As shown, in this embodiment, to further improve the detection accuracy of the device, a microporous filter 34 is also fixedly installed on the pipeline at the sample inlet of the combustion tube 45. The microporous filter 34 is fixed by a connecting flange 342. The micropores 341 in the microporous filter 34 can filter suspended particles and some interfering substances in the sample, protecting the subsequent pipeline. The microporous filter 34 can also use a multi-layer composite filter membrane to further increase the filtration effect and improve the detection accuracy. Pressure gauges can be installed on the pipelines before and after the microporous filter 34 for monitoring. When the microporous filter 34 is detected to be blocked, it can be quickly replaced or cleared. Furthermore, a sample delivery pump 41 is also connected between the microporous filter 34 and the combustion tube 45, and an atomizing nozzle is fixedly installed at the inlet of the combustion tube 45. The sample delivery pump 41 and the atomizing nozzle can make the sample enter the combustion tube 45 in an atomized state, thereby obtaining a better oxidation effect and improving the detection accuracy.

[0035] like Figures 1-4 As shown, in this embodiment, to further enhance the applicability and detection accuracy of the device, a halogen collecting tube 43 is fixedly connected to the sample outlet end of the combustion tube 45. The halogen collecting tube 43 has a built-in silver fiber layer and a porous structure, which can adsorb halogen oxides that may be released from the sample, preventing interference with subsequent detection. A miniature diaphragm pump 44 can be installed on the outlet end of the halogen collecting tube 43 for transporting gaseous samples. A halogen removal device is also connected in parallel on the pipeline between the dryer 6 and the detection chamber 7. The halogen removal tube 63 is designed to handle high-halogen samples. It integrates a potassium iodide coating to further remove halogen oxidation byproducts, preventing interference with subsequent detection and improving detection accuracy. A solenoid valve 61 is fixedly installed at the parallel branch of the halogen removal tube 63's inlet end. The solenoid valve 61 can switch between any parallel branch. When the sample being tested does not contain halogen elements, it can be directly switched to the ordinary inlet tube 62; if the sample contains halogen elements, it can be switched to the halogen removal tube 63, greatly increasing the applicability of the device.

[0036] The technical principle of this utility model is as follows: During testing, the phosphorous acid sample is poured into the inlet 11 and enters the acidification chamber 22. The first gas valve 21 is opened to control the acid in the acid storage tank 2 to enter the acidification chamber 22 for mixing and acidification of the sample. The first one-way valve 23 is opened, and the acidified sample enters the dilution chamber 32 after being mixed by the spiral guide plate 24. Then, the second gas valve 31 is opened according to the dilution ratio, and the pure water in the pure water tank 3 enters the dilution chamber 32 for mixing and dilution of the acidified sample. The pyrolysis furnace 4 is started to heat the combustion tube 45. After reaching the predetermined temperature, the second gas valve 4 is opened. Two one-way valves 33 are used. After the diluted sample is filtered through the microporous filter 34, it is atomized by the atomizing nozzle under the action of the injection pump and enters the combustion tube 45. The liquid sample becomes gaseous at high temperature, and carbon is oxidized to CO2. The halogens present in the gaseous sample are captured and adsorbed by the halogen trapping tube 43 and the halogen removal tube 63. The water vapor is cooled and absorbed by the condenser 5 and the dryer 6. The remaining gas finally enters the detection chamber 7, where the CO2 is captured by the high-sensitivity sensor and its accurate content is converted into an electrical signal and transmitted to the processor. After processing, the processor outputs the total organic carbon content.

[0037] This invention employs a pretreatment component, a high-temperature oxidation component, a purification component, and a detection component working in tandem. The sample is processed sequentially using a linear series flow and modular partitioning, ensuring seamless integration of sample processing, oxidation, detection, and control. This allows liquid samples to be rapidly diluted by acidification upon entering the device, removing inorganic carbon. The remaining organic carbon is oxidized at high temperature and converted into a gaseous state. After cooling and drying, the gaseous sample enters the detection chamber 7 for detection. Throughout the detection process, the organic carbon in the initial sample is converted into CO2 and captured by a highly sensitive sensor, thus rapidly and accurately determining the sample's carbon content. Furthermore, the spiral guide plate 24, microporous filter 34, atomizing nozzle, halogen collecting tube 43, and halogen removal tube 63 are used to improve the sample processing effect of each component, eliminate or reduce various interference factors that may affect the detection results, and are electrically connected to each internal component through the control panel. This allows for easy control of the start and stop of each component or internal component and display of sample monitoring parameters, achieving automation and easy control of the detection process. The operation is simple and convenient, does not rely on human operating experience, is fully enclosed, has no human intervention, is less affected by external interference factors, and has high detection accuracy and efficiency.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A total phosphorus TOC detection device, characterized by, The application relates to a high-temperature oxidation and purification device for detecting CO2 content. The device comprises a pretreatment assembly, a high-temperature oxidation assembly, a purification assembly and a detection assembly. The pretreatment assembly comprises an acidification bin (22) and a dilution bin (32) which are arranged in communication below the acidification bin (22), the top of the acidification bin (22) is arranged in communication with a sample inlet (11), the bottom of the acidification bin (22) and the dilution bin (32) is respectively fixedly arranged with a first one-way valve (23) and a second one-way valve (33), and the side of the acidification bin (22) and the dilution bin (32) is respectively arranged in communication with an acid storage tank (2) and a pure water tank (3) which can be controlled to open and close. The high-temperature oxidation assembly comprises a combustion pipe (45), the inlet end of the combustion pipe (45) is detachably arranged in communication with the bottom of the dilution bin (32), the combustion pipe (45) is fixedly arranged in a ring around the combustion pipe (45), and a cracking furnace (4) is arranged in communication on the side wall of the cracking furnace (4). The purification assembly comprises a condenser (5), the condenser (5) is detachably arranged in communication with the outlet end of the combustion pipe (45), and the outlet end of the condenser (5) is arranged in communication with a drier (6).

2. A total phosphorus TOC detection device according to claim 1, characterized in that: The detection assembly comprises a detection bin (7), the detection bin (7) is arranged in communication with the outlet end of the drier (6), a high-sensitivity sensor is fixedly arranged in the detection bin (7) and used for detecting CO2 content and converting the CO2 content into an electric signal, and the side of the high-sensitivity sensor is electrically connected with a processor which is used for processing the electric signal and outputting a detection result.

3. A total phosphorus TOC detection device as claimed in claim 1, characterized in that: A first gas valve (21) with metering function is fixedly arranged on the pipeline between the acid storage tank (2) and the acidification bin (22), and a second gas valve (31) with metering function is fixedly arranged on the pipeline between the pure water tank (3) and the dilution bin (32).

4. A total phosphorus TOC detection device according to claim 3, characterized in that: The combustion pipe (45) is fixedly arranged on the pipeline between the dilution bin (32) and the condenser (5) through quick-insert flanges (451), and the quick-insert flanges (451) are inserted and fixed on the two ends of the combustion pipe (45).

5. A total phosphorus TOC detection device as claimed in claim 4, characterized in that: Sealing rings (452) are fixedly arranged on the inner walls of the two ends of the combustion pipe (45) in a ring, the sealing rings (452) are made of high-temperature-resistant materials, and the sealing rings (452) abut against the outer walls of the quick-insert flanges (451) during insertion.

6. A total phosphorus TOC detection device according to claim 5, characterized by: A microporous filter (34) is further fixedly arranged on the pipeline of the sample inlet end of the combustion pipe (45).

7. A total phosphorus TOC detection device as claimed in claim 1, characterized in that: A sample feeding pump (41) is further arranged in communication between the microporous filter (34) and the combustion pipe (45), and an atomizing nozzle is fixedly arranged at the inlet of the combustion pipe (45).

8. A total phosphorus TOC detection device as claimed in claim 7, characterized in that: A halogen trapping pipe (43) is fixedly arranged in communication on the pipeline of the sample outlet end of the combustion pipe (45).

9. A total phosphorus TOC detection device as claimed in claim 1, characterized in that: A halogen removing pipe (63) is further arranged in parallel communication on the pipeline between the drier (6) and the detection bin (7), and an electromagnetic valve (61) is fixedly arranged on the parallel branch at the sample inlet end of the halogen removing pipe (63).

10. A total phosphorus TOC detection device as claimed in claim 1, characterized in that: Spiral guide plates (24) are fixedly arranged in a ring on the pipeline between the acidification bin (22) and the dilution bin (32). A cooling water tank (53) is fixedly arranged on one side of the condenser (5), and the cooling water tank (53) is in communication with the condenser (5) through a water inlet pipe (531) and a water outlet pipe (532).

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