High Temperature Combustion Ion Chromatography System

Abstract

A high-temperature combustion ion chromatography system includes a mainframe and a circulating cooling device, wherein the mainframe includes a sampling device, a combustion and hydrolysis device, a collecting and transferring device, and an ion chromatography device connected in sequence, wherein the sampling device is used to automatically send the sample into the combustion and hydrolysis device; the combustion and hydrolysis device is used to burn the sample and heat water, so that the water vapor and the gas generated after the sample is burned undergo a hydrolysis reaction; the collecting and transferring device is used to condense the gas generated after the sample is burned, collect the condensed solution, set the volume, and discharge the waste liquid; the circulating cooling device is connected to the combustion and hydrolysis device and the collecting and transferring device. The present invention has the advantages of compact structure, high degree of automation, high measurement accuracy, and wider test range.

Description

Technical Field

[0001] The invention mainly relates to the field of measuring equipment for the content of halogens, sulfur and other elements in solid wastes and combustible materials, and particularly refers to a high-temperature combustion ion chromatography system. Background Art

[0002] Solid waste refers to solid and semi-solid waste materials generated by human production, consumption, life or other activities. In layman's terms, it is "garbage". It mainly includes solid particles, garbage, slag, sludge, waste products, spoiled food, etc. In the solid waste industry, fluorine, chlorine and sulfur are currently mandatory indicators. Although existing standards point out that the elemental analysis of solid waste can borrow relevant standards for coal quality analysis, such as fluorine element analysis using ion selective electrode method (GB / T 4633-2014 Determination of fluorine in coal), low chlorine element analysis using titration method (GB / T 3558-2014 Determination of chlorine in coal) and high chlorine element analysis using ion selective electrode method (DL / T 1857-2018 Determination of chlorine content in coal oxygen bomb combustion ion selective electrode method), in fact, the use of titration method for samples with high chlorine content has the problem of difficult automatic cleaning of precipitation, and the use of chloride ion selective electrode method is limited by the technical limitations of the electrode, and low chlorine content (<1000ppm) analysis cannot be achieved. Solid waste itself is complex in type, and the content of each element ranges widely (tens of ppm to tens of percent). In the prior art, some practitioners have designed fluorine and chlorine analysis equipment to measure fluorine and chlorine, but sample placement and pre-treatment still require manual participation, and can only measure the content of fluorine and chlorine elements, but cannot simultaneously measure the content of sulfur elements. The types of elements that can be tested at one time are limited, and the degree of automation is not high. Summary of the invention

[0003] In view of the technical problems existing in the prior art, the present invention provides a high-temperature combustion ion chromatography system with compact structure, high degree of automation, high measurement accuracy and wider test range.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A high-temperature combustion ion chromatography system comprises a mainframe and a circulating cooling device, wherein the mainframe comprises a sampling device, a combustion and hydrolysis device, a collecting and transferring device, and an ion chromatography device which are connected in sequence, wherein the sampling device is used to automatically send a sample into the combustion and hydrolysis device; the combustion and hydrolysis device is used to burn the sample and heat water so that water vapor and the gas generated after the sample is burned undergo a hydrolysis reaction; the collecting and transferring device is used to condense the gas generated after the sample is burned, collect the condensed solution, set the volume, and discharge the waste liquid; and the circulating cooling device is connected to the combustion and hydrolysis device and the collecting and transferring device.

[0006] As a further improvement of the above technical solution: the sample feeding device includes a sample placement mechanism and a magnetic sample feeding mechanism, the sample placement mechanism includes a sample placement box and a sealing cover, the magnetic sample feeding mechanism includes a sample feeding rod and a driving mechanism, the sample feeding rod is located in the sealing cover, a magnetic block is provided at the end of the sample feeding rod, and a magnetic guide block is provided on the driving mechanism. The magnetic guide block reciprocates along the outer wall of the sealing cover driven by the driving mechanism to drive the sample feeding rod with the magnetic block to move synchronously.

[0007] As a further improvement of the above technical solution: the driving mechanism includes a driving motor and a synchronous belt, and the magnetic guide block is arranged on the synchronous belt.

[0008] As a further improvement of the above technical solution: the combustion hydrolysis device includes a combustion tube, and the combustion tube includes an outer tube body and an inner tube body; the outer tube body includes a first outer tube and a second outer tube; one end of the first outer tube is sealed and connected to the second outer tube; one end of the second outer tube is a closed structure, and the sealed end of the second outer tube is nested in the first outer tube to form a gap fit; the inner tube body is provided with an injection port; the inner tube body is nested in the second outer tube to form a gap fit; at least one vent is provided on the tube wall of the second outer tube near the open end, and a water vapor inlet is provided on the tube wall of the outer tube body near the injection end.

[0009] As a further improvement of the above technical solution: the water vapor inlet is located on the second outer tube, and the connection between the first outer tube and the second outer tube is located between the water vapor inlet and the vent.

[0010] As a further improvement of the above technical solution: the injection port of the inner tube body is connected to the injection device, a limiter is provided near the injection port of the inner tube body, and a filter is provided at the other end of the inner tube body.

[0011] As a further improvement of the above technical solution: the collecting and transferring device includes a condensing mechanism and a collecting constant volume bottle, one end of the condensing mechanism is connected to the collecting constant volume bottle, and the other end of the condensing mechanism is connected to the gas outlet of the combustion tube.

[0012] As a further improvement of the above technical solution: the collecting constant volume bottle includes a first collecting constant volume bottle and a second collecting constant volume bottle, the first collecting constant volume bottle is connected to the condensation mechanism, and the first collecting constant volume bottle and the second collecting constant volume bottle are connected through a power component and a filtering component.

[0013] As a further improvement of the above technical solution: the collecting and constant volume bottle includes a first cavity, a second cavity, a third cavity and a fourth cavity which are connected in sequence from top to bottom.

[0014] As a further improvement of the above technical solution: the diameter of the first cavity is equal to the diameter of the third cavity; the diameter of the second cavity is smaller than the diameter of the fourth cavity; the diameter of the third cavity is larger than the diameter of the fourth cavity.

[0015] As a further improvement of the above technical solution: three interfaces are opened on the collection and constant volume bottle, including a first interface, a second interface and a third interface, the first interface is used to receive the condensation solution, the second interface is used to output the sample solution, and the third interface is used to input the diluent, the cleaning solution and discharge the waste liquid, the first interface and the third interface are respectively arranged on the side walls of the fourth cavity, and the second interface is arranged on the side wall of the third cavity.

[0016] As a further improvement of the above technical solution: the circulating cooling device includes a cold water mechanism, a first container for storing condensed water, a second container for storing solvent and a third container for collecting waste liquid, the first container is connected to the cold water mechanism and the condensation mechanism, the second container is connected to the third interface, and the third container is connected to the third interface.

[0017] As a further improvement of the above technical solution: the ion chromatography device includes a quantitative mechanism and a multi-way valve, the quantitative mechanism is connected to the multi-way valve, and the second collection constant volume bottle is connected to the multi-way valve.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] 1. The high-temperature combustion ion chromatography system of the present invention automatically delivers samples to the combustion hydrolysis device in time and step by step through the sampling device. The gas after the sample is burned is fully hydrolyzed with water vapor. The circulating cooling device provides condensed water. The collecting and transferring device condenses the gas generated after the sample is burned, collects the condensed solution and transfers it to the ion chromatography device. The collecting and transferring device realizes the docking of the combustion hydrolysis device and the ion chromatography device. The ion chromatography device can automatically analyze the content of halogens such as fluorine, chlorine, and bromine and elements such as sulfur and nitrogen in the sample. The high-temperature combustion ion chromatography system in this embodiment has a high degree of automation and can complete the measurement of multiple elements at one time. It has a wider test range and high measurement accuracy.

[0020] 2. The high-temperature combustion ion chromatography system of the present invention adopts automatic sample feeding. The sample feeding device includes a sample placing mechanism and a magnetic sample feeding mechanism. The magnetic sample feeding mechanism includes a sample feeding rod and a driving mechanism. A magnetic block is provided at the end of the sample feeding rod. A magnetic guide block is provided on the driving mechanism. The magnetic guide block moves horizontally under the drive mechanism to drive the sample feeding rod with the magnetic block to move synchronously. The magnetic sample feeding mechanism is adopted, and the sample feeding process is smoother and more reliable. The magnetic sample feeding mechanism can be used to feed the sample into the combustion hydrolysis device in a sealed environment to ensure that the high-temperature hydrolysis environment is not affected.

[0021] 3. The combustion tube for high-temperature combustion ion chromatograph analyzer of the present invention is a three-layer combustion tube formed by combining an inner tube body and a double-layer outer tube body. During the high-temperature combustion hydrolysis process, the gas generated by the combustion of the sample first passes through the inner tube body to the second outer tube, and then passes through the second outer tube to the first outer tube. The circuitous three-layer tube body structure effectively increases the passage path of the gas in the combustion tube; especially for highly volatile samples, the three-layer tube body structure prolongs the time for the sample gas to undergo high-temperature hydrolysis in the combustion tube, which is beneficial to improving the degree of hydrolysis of the sample and the accuracy of the detection results; in addition, by arranging a water vapor inlet on the outer tube body, it can avoid water accumulation and condensation at the tube mouth of the combustion tube, and avoid direct contact of the sample with water vapor, effectively alleviating the corrosion problem of the combustion tube and extending the service life of the combustion tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the host in a specific embodiment of the present invention.

[0023] Figure 2 It is a schematic structural diagram of the circulating cooling device of the present invention in a specific embodiment.

[0024] Figure 3 It is a schematic structural diagram of the sample injection device of the present invention in a specific embodiment.

[0025] Figure 4 It is a schematic structural diagram of the combustion tube of the present invention in a specific embodiment.

[0026] Figure 5 It is a schematic structural diagram of a collecting and constant volume bottle in a specific embodiment of the present invention.

[0027] Legend:

[0028] 11. Sample placing mechanism; 12. Magnetic sample feeding mechanism; 121. Sample feeding rod; 122. Driving mechanism; 1221. Magnetic guide block; 2. Combustion and hydrolysis device; 21. Combustion tube; 211. Outer tube body; 2111. First outer tube; 2112. Second outer tube; 212. Inner tube body; 3. Collection and transfer device; 31. Condensation mechanism; 32. Collection and constant volume flask; 321. First interface; 322. Second interface; 323. Third interface; 4. Ion chromatography device; 5. Circulating cooling device; 51. Cold water mechanism; 52. First container; 53. Second container; 54. Third container; 6. Water vapor inlet; 7. Limiting member; 8. Filter element; 9. Vent. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1 to 5 As shown, the present invention discloses a high-temperature combustion ion chromatography system, including a mainframe and a circulating cooling device 5, the mainframe includes a sampling device, a combustion and hydrolysis device 2, a collecting and transferring device 3, and an ion chromatography device 4 which are connected in sequence, the sampling device is used to automatically send the sample into the combustion and hydrolysis device 2; the combustion and hydrolysis device 2 is used to burn the sample and heat water, so that the water vapor and the gas generated after the sample is burned undergo a hydrolysis reaction; the collecting and transferring device 3 is used to condense the gas generated after the sample is burned, collect the condensed solution, fix the volume, and discharge the waste liquid; the circulating cooling device 5 is connected to the combustion and hydrolysis device 2 and the collecting and transferring device 3.

[0031] The high-temperature combustion ion chromatography system of the present invention automatically delivers the sample into the combustion hydrolysis device 2 in time and step by step through the sampling device. The gas after the sample is burned is fully hydrolyzed with water vapor to form a solution. The circulating cooling device 5 provides condensed water. The collecting and transferring device 3 condenses the gas generated after the sample is burned, collects the condensed solution and transfers it to the ion chromatography device 4. The collecting and transferring device 3 realizes the docking of the combustion hydrolysis device 2 and the ion chromatography device 4. The ion chromatography device 4 can automatically analyze the content of halogens such as fluorine, chlorine, bromine, sulfur, nitrogen and other elements in the sample. The high-temperature combustion ion chromatography system in this embodiment has a high degree of automation and can complete the measurement of multiple elements at one time. It has a wider test range and high measurement accuracy.

[0032] In this embodiment, the ion chromatography device 4 adopts a drawer-type design on the host, which is convenient for debugging and cleaning components in the ion chromatography device 4.

[0033] In this embodiment, the sample feeding device includes a sample placing mechanism 11 and a magnetic sample feeding mechanism 12. The sample placing mechanism 11 includes a sample placing box and a sealing cover. The magnetic sample feeding mechanism 12 includes a sample feeding rod 121 and a driving mechanism 122. The sample feeding rod 121 is located in the sealing cover. A magnetic block is provided at the end of the sample feeding rod 121. A magnetic guide block 1221 is provided on the driving mechanism 122. The magnetic guide block 1221 reciprocates along the outer wall of the sealing cover under the drive of the driving mechanism 122 to drive the sample feeding rod 121 with the magnetic block to move synchronously. The system realizes automatic sample feeding. With the magnetic sample feeding mechanism 12, the sample feeding process is more stable and reliable. The process of the sample feeding rod 121 feeding the sample into the combustion hydrolysis device 2 is completely carried out in a sealed environment, thereby avoiding affecting the combustion environment of the sample.

[0034] Furthermore, in a preferred embodiment, the driving mechanism 122 includes a driving motor and a synchronous belt, and the magnetic guide block 1221 is disposed on the synchronous belt. The driving motor drives the synchronous belt to move, thereby driving the magnetic guide block 1221. The use of the synchronous belt can ensure that the magnetic guide block 1221 reciprocates more smoothly. In other embodiments, the driving mechanism 122 can use other driving methods such as a slide rail and a slider.

[0035] In this embodiment, the combustion hydrolysis device 2 includes a combustion tube 21, and the combustion tube 21 includes an outer tube body 211 and an inner tube body 212; the outer tube body 211 includes a first outer tube 2111 and a second outer tube 2112; one end of the first outer tube 2111 is sealed and connected to the second outer tube 2112; one end of the second outer tube 2112 is a closed structure, and the sealed end of the second outer tube 2112 is nested in the first outer tube 2111 to form a gap fit; an injection port is provided on the inner tube body 212; the inner tube body 212 is nested in the second outer tube 2112 to form a gap fit; at least one vent 9 is provided on the tube wall of the second outer tube 2112 near the open end, and a water vapor inlet 6 is provided on the tube wall of the outer tube body 211 near the injection end.

[0036] By combining the inner tube body 212 with the double-layer outer tube body 211 to form a three-layer combustion tube 21, during the high-temperature combustion and hydrolysis process, the gas generated by the combustion of the sample first passes through the inner tube body 212 to the second outer tube 2112, and then passes through the second outer tube 2112 to the first outer tube 2111. The circuitous three-layer tube body structure effectively increases the passage path of the gas in the combustion tube 21; especially for highly volatile samples, the three-layer tube body structure prolongs the time for the sample gas to undergo high-temperature hydrolysis in the combustion tube 21, which is beneficial to improving the degree of hydrolysis of the sample and the accuracy of the detection results; in addition, by arranging a water vapor inlet 6 on the outer tube body 211, it is possible to avoid water accumulation and condensation at the tube mouth of the combustion tube 21, and to avoid direct contact of the sample with water vapor, thereby effectively alleviating the corrosion problem of the combustion tube 21 and extending the service life of the combustion tube 21.

[0037] Further, in a preferred embodiment, the water vapor inlet 6 is located on the second outer tube 2112, and the connection between the first outer tube 2111 and the second outer tube 2112 is located between the water vapor inlet 6 and the vent 9. The distance between the water vapor inlet 6 and the injection end is smaller than the distance between the vent 9 and the injection end.

[0038] In this embodiment, the injection port of the inner tube body 212 is connected to the injection device, a stopper 7 is provided near the injection port of the inner tube body 212, and a filter 8 is provided at the other end of the inner tube body 212. The smoke and dust entrained in the gas generated by the combustion of the sample is filtered out by the filter 8, thereby improving the purity of the combustion gas and preventing the smoke and dust therein from clogging the vent hole 9 on the second outer tube 2112.

[0039] By providing the stopper 7 near the injection port of the inner tube 212 , the inner tube 212 is effectively prevented from colliding with the outer tube 211 after the filter 8 (such as a sand core filter) is blocked, thereby improving the safety of the combustion tube 21 .

[0040] In this embodiment, the first outer tube 2111 and the second outer tube 2112 are integrally formed. The integral forming method simplifies the connection relationship between the first outer tube 2111 and the second outer tube 2112, and effectively ensures the sealing performance between the first outer tube 2111 and the second outer tube 2112. In this embodiment, the sealing end of the second outer tube 2112 adopts a U-shaped structure; in other embodiments, the sealing end of the second outer tube 2112 can be a right-angle structure. It should be noted that the second outer tube 2112 only needs to be sealed at one end and open at the other end, and can realize the inner tube body 212 nested in the second outer tube 2112 to form a tube body structure with a clearance fit.

[0041] Furthermore, in this embodiment, the other end of the first outer tube 2111 is a conical interface, and a limiting structure is provided on the conical interface. In a preferred embodiment, the conical interface is a frosted interface. The conical interface of the first outer tube 2111 is set as a frosted structure with a limit, which ensures the sealed docking of the outer tube body 211 and the condensation mechanism 31. The limiting structure can also prevent the combustion tube 21 from colliding with other components of the high-temperature combustion chromatographic analysis system, thereby improving the safety of the combustion tube 21.

[0042] In this embodiment, a plurality of vent holes 9 are evenly arranged around the tube wall of the second outer tube 2112. The gas after the sample in the second outer tube 2112 is burned enters the first outer tube 2111 through the vent holes 9. Since the vent holes 9 are arranged on the tube wall away from the sealed end of the second outer tube 2112, and the vent holes 9 are close to the connection between the first outer tube 2111 and the second outer tube 2112, the passage path of the gas generated by the combustion of the sample in the second outer tube 2112 is extended, and the passage path of the gas in the first outer tube 2111 is extended, which greatly increases the high-temperature hydrolysis time of the sample in the combustion tube 21 and improves the hydrolysis degree of the sample.

[0043] In this embodiment, the collecting and transferring device 3 includes a condensing mechanism 31 and a collecting constant volume bottle 32. One end of the condensing mechanism 31 is connected to the collecting constant volume bottle 32, and the other end of the condensing mechanism 31 is connected to the gas outlet of the combustion tube 21. The collecting constant volume bottle 32 includes a first collecting constant volume bottle and a second collecting constant volume bottle. The first collecting constant volume bottle is connected to the condensing mechanism 31, and the first collecting constant volume bottle and the second collecting constant volume bottle are connected through a power component (such as a pump body) and a filter component. Three interfaces are provided on the collecting constant volume bottle 32, including a first interface 321, a second interface 322 and a third interface 323. The first interface 321 is used to receive the condensed solution, the second interface 322 is used to output the sample solution, and the third interface 323 is used to input the diluent and discharge the waste liquid.

[0044] In this embodiment, the circulating cooling device 5 includes a cold water mechanism 51, a first container 52 for storing condensed water, a second container 53 for storing a solvent (such as pure water or distilled water), and a third container 54 for collecting waste liquid. The first container 52 is connected to the water inlet of the condensation mechanism 31 through the cold water mechanism 51, the second container 53 is connected to the third interface 323, and the third container 54 is connected to the third interface 323.

[0045] In this embodiment, the ion chromatography device 4 includes a quantitative mechanism (not shown in the figure) and a multi-way valve (not shown in the figure), the quantitative mechanism is connected to the multi-way valve, and the second collection constant volume bottle is connected to the multi-way valve. Further, in a preferred embodiment, the multi-way valve is a six-way valve, the second interface of the collection constant volume bottle is connected to the six-way valve, the condensed solution enters the quantitative mechanism through the six-way valve, and after being quantified by the quantitative mechanism, the condensed solution flows into the six-way valve again, and enters the chromatographic column for testing and analysis under the control of the six-way valve.

[0046] The collecting and transferring device 3 realizes the collection, volume determination, and drainage of the gas condensate solution generated after the sample is burned, as well as the automatic cleaning of the collecting and volume determination bottle 32 .

[0047] The specific working principle is as follows: the sample injection device automatically sends the sample into the combustion hydrolysis device 2, the sample is burned in the inner tube body 212 of the combustion tube 21, and the gas generated after combustion passes through the filter 8 into the outer tube body 211. The outer tube body 211 is a double-layer quartz tube. A water vapor inlet 6 is provided on the tube wall of the outer tube body 211 near the injection end. The combustion tube 21 heats the distilled water or pure water provided by the circulating cooling device 5 to form water vapor. The water vapor enters the outer tube body 211 of the combustion tube 21 through the water vapor inlet 6. The water vapor and the gas generated after the sample is burned The sample is fully hydrolyzed in the outer tube 211, one end of the condensation mechanism 31 is connected to the combustion tube 21, and the gas after the reaction enters the condensation mechanism 31. The condensation mechanism 31 is connected to the circulating cooling device 5, and the condensed water is circulated into the condensation mechanism 31 through the cold water mechanism 51 and the pump body, so that the gas generated after the sample is burned is condensed into a solution through the condensation mechanism 31. The other end of the condensation mechanism 31 is connected to the collecting constant volume bottle 32, and the condensed solution enters the first collecting constant volume bottle through the first interface 321 of the first collecting constant volume bottle. The circulating cooling device 5 The solvent in the second container 53 enters the first collecting constant volume bottle through the third interface 323, and the condensed solution is diluted. The solution is constant volume by using a floating ball photoelectric positioning method. When the solution is diluted to a preset amount (for example, 100 ml), the solvent is stopped from being introduced (the solvent can be pure water, distilled water or other liquids), and a certain amount of solution is taken out from the second interface 322 through the pump body. The taken out solution enters the second collecting constant volume bottle through the first interface 321 of the second collecting constant volume bottle after being filtered. After the condensed solution is diluted and constant volume for the second time, a certain amount of solution is taken out and filtered again, and then sent to the six-way valve of the ion chromatography device 5, quantified by a quantitative mechanism (such as a quantitative ring), and controlled by the six-way valve to enter the chromatographic column for testing the content of halogens such as fluorine, chlorine, and bromine, and elements such as sulfur and nitrogen.

[0048] The water and gas circuits in the collection and transfer device 3 are reasonably designed, and the first collection and constant volume bottle and the second collection and constant volume bottle are used to perform two constant volume and two filtrations on the condensed solution, which greatly improves the accuracy of the test. For the generated waste liquid, since the third interface 323 of the first collection and constant volume bottle and the second collection and constant volume bottle of the collection and transfer device 3 are connected with the second container 53 for storing the solvent and the third container 54 for collecting the waste liquid of the circulating cooling device 5, the automatic cleaning of the collection and constant volume bottle 32 and the automatic discharge of the waste liquid are realized.

[0049] In this embodiment, the collecting constant volume bottle 32 includes a first cavity, a second cavity, a third cavity and a fourth cavity which are sequentially connected from top to bottom, the first cavity is an open cavity or a cavity with a cover, the first interface 321 and the third interface 323 are respectively arranged on the side wall of the fourth cavity, and the second interface 322 is arranged on the side wall of the third cavity. Further, in a preferred embodiment, the diameter of the first cavity is equal to the diameter of the third cavity; the diameter of the second cavity is smaller than the diameter of the fourth cavity; the diameter of the third cavity is larger than the diameter of the fourth cavity.

[0050] The collection and volume setting bottle 32 integrates multiple functions such as the collection and dilution and volume setting of the condensed solution, sampling, discharge of waste liquid, and automatic cleaning. By setting the diameter of the second cavity of the bottle body to the smallest diameter among the four cavities, it is convenient to judge the end point of sample dilution and volume setting, and improve the accuracy and stability of volume setting; in addition, the diameter of the fourth cavity at the bottom of the collection and volume setting bottle 32 is smaller than the diameter of the third cavity in the middle of the bottle body, so that the sample dilution liquid has a higher liquid level in the bottle body, reducing the probability of extracting sediment at the bottom of the bottle, and the third cavity has a larger diameter, which improves the convenience of sampling.

[0051] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A high temperature combustion ion chromatography system, characterized in that: The invention comprises a main machine and a circulating cooling device (5), wherein the main machine comprises a sampling device, a combustion and hydrolysis device (2), a collecting and transferring device (3), and an ion chromatography device (4) which are connected in sequence, wherein the sampling device is used to automatically send a sample into the combustion and hydrolysis device (2); the combustion and hydrolysis device (2) is used to burn the sample and heat water so that water vapor and gas generated after the sample is burned undergo a hydrolysis reaction; the collecting and transferring device (3) is used to condense the gas generated after the sample is burned, collect the condensed solution, set the volume, and discharge the waste liquid; the circulating cooling device (5) is connected to the combustion and hydrolysis device (2) and the collecting and transferring device (3); the collecting and transferring device (4) is used to automatically send a sample into the combustion and hydrolysis device (2); the collecting and transferring device (2) is used to automatically send a sample into the combustion and hydrolysis device (2); the collecting and transferring device (3 ... The device (3) comprises a condensing mechanism (31) and a collecting constant volume bottle (32), wherein one end of the condensing mechanism (31) is connected to the collecting constant volume bottle (32), and the other end (31) of the condensing mechanism is connected to the gas outlet of the combustion tube (21), and the collecting constant volume bottle (32) comprises a first collecting constant volume bottle and a second collecting constant volume bottle which are connected to each other, and the first collecting constant volume bottle and the second collecting constant volume bottle comprise a first cavity, a second cavity, a third cavity and a fourth cavity which are connected in sequence from top to bottom, and the diameter of the first cavity is equal to the diameter of the third cavity; the diameter of the second cavity is smaller than the diameter of the fourth cavity; and the diameter of the third cavity is larger than the diameter of the fourth cavity.

2. The high temperature combustion ion chromatography system according to claim 1, characterized in that: The sample feeding device comprises a sample placing mechanism (11) and a magnetic sample feeding mechanism (12); the sample placing mechanism (11) comprises a sample placing box and a sealing cover; the magnetic sample feeding mechanism (12) comprises a sample feeding rod (121) and a driving mechanism (122); the sample feeding rod (121) is located in the sealing cover; a magnetic block is provided at the end of the sample feeding rod (121); a magnetic guide block (1221) is provided on the driving mechanism (122); the magnetic guide block (1221) reciprocates along the outer wall of the sealing cover under the drive of the driving mechanism (122) to drive the sample feeding rod (121) with the magnetic block to perform synchronous movement.

3. The high temperature combustion ion chromatography system according to claim 2, characterized in that: The driving mechanism (122) comprises a driving motor and a synchronous belt, and the magnetic guide block (1221) is arranged on the synchronous belt.

4. The high temperature combustion ion chromatography system according to claim 1, characterized in that: The combustion hydrolysis device (2) comprises a combustion tube (21), wherein the combustion tube (21) comprises an outer tube body (211) and an inner tube body (212); the outer tube body (211) comprises a first outer tube (2111) and a second outer tube (2112); one end of the first outer tube (2111) is sealed and connected to the second outer tube (2112); one end of the second outer tube (2112) is a closed structure, and the sealed end of the second outer tube (2112) is nested in the first outer tube (2111) to form a clearance fit; an injection port is provided on the inner tube body (212); the inner tube body (212) is nested in the second outer tube (2112) to form a clearance fit; at least one vent hole (9) is provided on the tube wall of the second outer tube (2112) near the open end, and a water vapor inlet port (6) is provided on the tube wall of the outer tube body (211) near the injection end.

5. The high temperature combustion ion chromatography system according to claim 4, characterized in that: The water vapor inlet (6) is located on the second outer tube (2112), and the connection between the first outer tube (2111) and the second outer tube (2112) is located between the water vapor inlet (6) and the vent hole (9).

6. The high temperature combustion ion chromatography system according to claim 4, characterized in that: The injection port of the inner tube body (212) is connected to the injection device, a stopper (7) is provided near the injection port of the inner tube body (212), and a filter (8) is provided at the other end of the inner tube body (212).

7. The high temperature combustion ion chromatography system according to claim 1, characterized in that: The first collecting constant volume bottle is in communication with the condensing mechanism (31), and the first collecting constant volume bottle and the second collecting constant volume bottle are connected via a power component and a filtering component.

8. The high temperature combustion ion chromatography system according to claim 1, characterized in that: The collecting and constant volume bottle (32) is provided with three interfaces, including a first interface (321), a second interface (322) and a third interface (323); the first interface (321) is used to receive a condensation solution, the second interface (322) is used to output a sample solution, and the third interface (323) is used to input a diluent, a cleaning solution and discharge waste liquid; the first interface (321) and the third interface (323) are respectively arranged on the side walls of the fourth cavity, and the second interface (322) is arranged on the side wall of the third cavity.

9. The high temperature combustion ion chromatography system according to claim 8, characterized in that: The circulating cooling device (5) comprises a cold water mechanism (51), a first container (52) for storing condensed water, a second container (53) for storing a solvent, and a third container (54) for collecting waste liquid, wherein the first container (52) is connected to the condensation mechanism (31) via the cold water mechanism (51), the second container (53) is connected to the third interface (323), and the third container (54) is connected to the third interface (323).

10. The high temperature combustion ion chromatography system according to any one of claims 1 to 9, characterized in that: The ion chromatography device (4) comprises a quantitative mechanism and a multi-way valve, wherein the quantitative mechanism is connected to the multi-way valve, and the second collecting constant volume bottle is connected to the multi-way valve.

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