Sulfur, nitrogen and chlorine integrated analyzer system

Abstract

The utility model discloses a sulfur, nitrogen and chlorine integrated analyzer system in the technical field of elemental analysis, and aims to solve the problems of high instrument purchase cost, high analysis and detection cost and low personnel utilization rate caused by the fact that two instruments are required to work when the contents of three elements of sulfur, nitrogen and chlorine are analyzed in the prior art. The sulfur-nitrogen-chlorine analyzer comprises a sulfur-nitrogen-chlorine analyzer host electrically connected with a computer workstation, the sulfur-nitrogen-chlorine analyzer host is electrically connected with a sulfur detection module, a nitrogen detection module, a chlorine detection module, a reaction gas control module and a sample cracking module, and the nitrogen detection module is connected with the reaction gas control module; after a sample is subjected to cracking reaction through the sample cracking module, sample cracking gas can be input into the sulfur detection module, the nitrogen detection module or the chlorine detection module through the gas distribution unit, the content of three elements of sulfur, nitrogen and chlorine is analyzed by adopting one instrument, the instrument purchase cost is low, the analysis and detection cost is low, and the personnel utilization rate is high.

Description

Technical Field

[0001] The utility model relates to a sulfur-nitrogen-chlorine integrated analyzer system, belonging to the technical field of elemental analysis. Background Art

[0002] In coal, petroleum, and chemical products, compounds containing sulfur, nitrogen, and chlorine elements will inevitably be produced. The sulfur content directly affects their corrosion resistance, stability, antioxidant property, lubricity, etc. Therefore, determining the sulfur content in petroleum products is of great significance for ensuring product quality. The detection of sulfur content helps to ensure production safety, improve production efficiency, and also meet environmental protection requirements. Nitrides in oil products are one of the main factors leading to the formation of gum and precipitation during the storage process of oil products, thus having a direct impact on the quality and performance of oil products; in the catalytic reforming process, if the nitrogen content in the feedstock oil is too high, it can cause the catalyst to be poisoned and its activity to decline, resulting in a reduction in the yield of light oil products and economic losses; on the other hand, nitrides in oil products will become nitrogen oxides during the use of oil products, causing environmental pollution and endangering human health. The detection of chlorine content is crucial for ensuring product quality, safety, and environmental impact. To sum up, the detection of sulfur, nitrogen, and chlorine contents in chemical products is of great significance for ensuring product quality, improving safety, extending service life, and protecting the environment.

[0003] Currently, the detection of sulfur content mostly uses the ultraviolet fluorescence method, the detection of nitrogen content mostly uses the chemiluminescence method, and the detection of chlorine content mostly uses the microcoulomb coulometry. A sulfur analyzer can be used to detect the sulfur content alone, or a sulfur-nitrogen analyzer can be used to simultaneously detect the contents of sulfur and nitrogen elements by one injection. The detection of chlorine content requires a separate chlorine analyzer, and there is no instrument that can detect the contents of sulfur, nitrogen, and chlorine elements.

[0004] When analyzing the contents of sulfur, nitrogen, and chlorine elements in the prior art, two instruments are required to work, resulting in high instrument procurement costs, high analysis and detection costs, and low personnel utilization rate, which cannot meet the requirements of modern laboratories for analysis and detection. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a sulfur-nitrogen-chlorine integrated analyzer system to solve the problem that when analyzing the contents of sulfur, nitrogen, and chlorine elements in the prior art, two instruments are required to work, resulting in high instrument procurement costs, high analysis and detection costs, and low personnel utilization rate.

[0006] To solve the above technical problems, the utility model is implemented by the following technical solutions:

[0007] The utility model provides a sulfur, nitrogen and chlorine integrated analyzer system, which includes a computer workstation and a sulfur, nitrogen and chlorine analyzer host electrically connected to the computer workstation. The sulfur, nitrogen and chlorine analyzer host is electrically connected to a sulfur detection module, a nitrogen detection module, a chlorine detection module, a reaction gas control module and a sample cracking module. The nitrogen detection module is connected to the reaction gas control module;

[0008] The sample cracking module includes a high-temperature cracking furnace. A cracking quartz tube is arranged inside the high-temperature cracking furnace. The gas inlet of the cracking quartz tube is connected to a liquid sampling module, a gas sampling module and the reaction gas control module. The gas outlet of the cracking quartz tube is connected to a gas distribution unit. The gas distribution unit is connected to the chlorine detection module through a first gas outlet pipe, and the gas distribution unit is connected to the sulfur detection module through a second gas outlet pipe. The sulfur detection module is connected to the nitrogen detection module.

[0009] Further, the gas sampling module includes a pressure reducing valve, an injection pump and a switching valve. The input end of the pressure reducing valve is a sample gas inlet. The output end of the pressure reducing valve is connected to the input end of the injection pump. The output end of the injection pump is connected to the input end of the switching valve. The output end of the switching valve is connected to the gas inlet of the cracking quartz tube.

[0010] Further, the high-temperature cracking furnace is connected to a temperature controller.

[0011] Further, the chlorine detection module includes a dehydration cell. The dehydration cell is connected to the first gas outlet pipe. The dehydration cell is connected to a chlorine detection electrolytic cell through a third gas outlet pipe.

[0012] Further, the sulfur detection module includes a fluorescence chamber. The fluorescence chamber is connected to the second gas outlet pipe. A first photomultiplier tube and an ultraviolet lamp are arranged on the outer wall of the fluorescence chamber. The ultraviolet lamp is connected to a lamp power supply.

[0013] Further, the nitrogen detection module includes a chemiluminescence chamber and an ozone generator. The fluorescence chamber is connected to the chemiluminescence chamber through a fourth gas outlet pipe. The ozone generator is connected to the chemiluminescence chamber through a fifth gas outlet pipe. A second photomultiplier tube is arranged on the outer wall of the chemiluminescence chamber. The ozone generator is connected to the reaction gas control module.

[0014] Further, the chemiluminescence chamber is connected to the second gas outlet pipe through a return gas pipe. An exhaust pipe is arranged on the second gas outlet pipe.

[0015] Further, the computer workstation is electrically connected to a display screen.

[0016] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0017] The sulfur, nitrogen and chlorine integrated analyzer system, through the cooperation of a sample cracking module, a sulfur detection module, a nitrogen detection module and a chlorine detection module, after the sample cracking module performs a cracking reaction on the sample, the sample cracking gas can be input into the sulfur detection module, the nitrogen detection module or the chlorine detection module through a gas distribution unit, so as to analyze the contents of sulfur, nitrogen and chlorine three elements with one instrument, with low instrument procurement cost, low analysis and detection cost and high personnel utilization rate, which can meet the requirements of modern laboratories for analysis and detection. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a sulfur, nitrogen and chlorine integrated analyzer system provided by an embodiment of the present invention.

[0019] In the figure: 1. Computer workstation; 2. Sulfur, nitrogen and chlorine analyzer host; 3. Sulfur detection module; 4. Nitrogen detection module; 5. Chlorine detection module; 6. Reaction gas control module; 7. Sample cracking module; 8. Liquid injection module; 9. Gas injection module; 10. High-temperature cracking furnace; 11. Gas distribution unit; 12. Cracking quartz tube; 13. Second gas outlet pipe; 14. First gas outlet pipe; 15. Dehydration tank; 16. Third gas outlet pipe; 17. Chlorine detection electrolytic cell; 18. Fluorescence chamber; 19. First photomultiplier tube; 20. Ultraviolet lamp; 21. Lamp power supply; 22. Chemiluminescence chamber; 23. Ozone generator; 24. Fourth gas outlet pipe; 25. Fifth gas outlet pipe; 26. Second photomultiplier tube; 27. Display screen; 28. Return gas pipe. Detailed Embodiments

[0020] The present invention will be further described below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] As Figure 1 shown, the present utility model provides a sulfur, nitrogen, and chlorine integrated analyzer system, which includes a computer workstation 1 and a sulfur, nitrogen, and chlorine analyzer main unit 2 electrically connected to the computer workstation 1. The sulfur, nitrogen, and chlorine analyzer main unit 2 is electrically connected to a sulfur detection module 3, a nitrogen detection module 4, a chlorine detection module 5, a reaction gas control module 6, and a sample cracking module 7. The nitrogen detection module 4 is connected to the reaction gas control module 6; the sample cracking module 7 includes a high-temperature cracking furnace 10. Inside the high-temperature cracking furnace 10, there is a cracking quartz tube 12. The inlet of the cracking quartz tube 12 is connected to a liquid sampling module 8, a gas sampling module 9, and the reaction gas control module 6. The outlet of the cracking quartz tube 12 is connected to a gas distribution unit 11. The gas distribution unit 11 is connected to the chlorine detection module 5 through a first outlet pipe 14, and the gas distribution unit 11 is connected to the sulfur detection module 3 through a second outlet pipe 13. The sulfur detection module 3 is connected to the nitrogen detection module 4.

[0024] Specifically, the sulfur, nitrogen, and chlorine analyzer main unit 2 receives the working instructions from the computer workstation 1, and then sends the working instructions to the sample cracking module 7, the reaction gas control module 6, the sulfur detection module 3, the nitrogen detection module 4, and the chlorine detection module 5 respectively. These modules send the signals generated by the working instructions to the sulfur, nitrogen, and chlorine analyzer main unit 2 for processing and then feedback to the computer workstation 1. When the feedback signal received by the computer workstation 1 meets the analysis conditions, the gas sampling module 9 or the liquid sampling module 8 is started according to the state of the analyzed sample, and the sample to be tested is introduced into the sample cracking module 7 for chemical reaction. The sample cracking gas is carried by the carrier gas and enters the sulfur detection module 3, the nitrogen detection module 4, or the chlorine detection module 5 through the gas distribution unit 11 for testing. The computer workstation 1 analyzes and processes the feedback signal, and finally calculates the content of each element; further, when the sample enters the cracking quartz tube 12 inside the high-temperature cracking furnace 10, the sample is subjected to a cracking reaction by the high-temperature cracking furnace 10. The cracked reactants can enter the chlorine detection module 5 through the first outlet pipe 14 for detection work, or can enter the sulfur detection module 3 or the nitrogen detection module 4 through the second outlet pipe 13 for detection work, so as to detect the content of sulfur, nitrogen, and chlorine three elements by one instrument.

[0025] Specifically, the computer workstation 1 controls the reaction gas control module 6 and the sample pyrolysis module 7 to make the carrier gas flow rate, pyrolysis oxygen flow rate, nitrogen ozone flow rate, and the temperature of the high-temperature pyrolysis furnace 10 reach the set values; according to the detection items, start the corresponding sulfur detection module 3, nitrogen detection module 4, or chlorine detection module 5; when the feedback signal received by the computer workstation 1 meets the experimental requirements, start the gas sampling module 9 or the liquid sampling module 8 according to the sample state, send the sample to be measured into the sample pyrolysis module 7 for pyrolysis reaction, and the pyrolyzed reactants are carried by the carrier gas and then sent to the sulfur detection module 3, nitrogen detection module 4, or chlorine detection module 5 for detection; the computer workstation 1 analyzes and calculates the detection signal, saves the peak shape and results, and completes the detection work.

[0026] When the sample is introduced into the high-temperature pyrolysis furnace 10, an oxidation reaction occurs, and its reaction process is shown in the following formula:

[0027] R-N + R-S + ————> + + ·NO + +HCL+MOX;

[0028] At a high temperature exceeding 1000 °C, the sample is completely vaporized and undergoes oxidative pyrolysis, and the reaction products include , , ·NO, , HCL, and other oxidation products are represented by MOX. The nitrides in the sample are quantitatively converted into ·NO, the sulfides are quantitatively converted into , and the chlorides are quantitatively converted into HCL; the reaction gas is carried by the carrier gas, passes through a dryer to remove the moisture therein, and enters the reaction chamber.

[0029] In this application, through the cooperation of the sample pyrolysis module 7, sulfur detection module 3, nitrogen detection module 4, and chlorine detection module 5, after the sample pyrolysis module 7 performs a pyrolysis reaction on the sample, the sample pyrolysis gas can be input into the sulfur detection module 3, nitrogen detection module 4, or chlorine detection module 5 through the gas distribution unit 11, so that the contents of three elements, sulfur, nitrogen, and chlorine, can be analyzed by one instrument. The instrument procurement cost is low, the analysis and detection cost is low, and the personnel utilization rate is high, which can meet the requirements of modern laboratories for analysis and detection.

[0030] In an embodiment, the gas sampling module 9 includes a pressure reducing valve, an injection pump, and a switching valve. The input end of the pressure reducing valve is the sample gas inlet, the output end of the pressure reducing valve is connected to the input end of the injection pump, the output end of the injection pump is connected to the input end of the switching valve, the output end of the switching valve is connected to the gas inlet of the pyrolysis quartz tube 12, and the computer workstation 1 is electrically connected to the display screen 27.

[0031] An embodiment, the pyrolysis furnace 10 is connected to a temperature controller, facilitating stable control of the working temperature of the pyrolysis furnace 10.

[0032] An embodiment, the chlorine detection module 5 includes a dehydration tank 15, the dehydration tank 15 is connected to the first outlet pipe 14, the dehydration tank 15 is connected to a chlorine detection electrolytic cell 17 through a third outlet pipe 16, the sulfur detection module 3 includes a fluorescence chamber 18, the fluorescence chamber 18 is connected to the second outlet pipe 13, a first photomultiplier tube 19 and an ultraviolet lamp 20 are provided on the outer wall of the fluorescence chamber 18, the ultraviolet lamp 20 is connected to a lamp power supply 21, the nitrogen detection module 4 includes a chemiluminescence chamber 22 and an ozone generator 23, the fluorescence chamber 18 is connected to the chemiluminescence chamber 22 through a fourth outlet pipe 24, the ozone generator 23 is connected to the chemiluminescence chamber 22 through a fifth outlet pipe 25, a second photomultiplier tube 26 is provided on the outer wall of the chemiluminescence chamber 22, the ozone generator 23 is connected to the reaction gas control module 6, the chemiluminescence chamber 22 is connected to the second outlet pipe 13 through a return pipe 28, and an exhaust pipe is provided on the second outlet pipe 13.

[0033] In use, the computer workstation 1 includes a computer mainframe, a display screen 27, a keyboard, a mouse, and a sulfur-nitrogen-chlorine integrated analysis control software, and is connected to the sulfur-nitrogen-chlorine analyzer mainframe 2 through a communication interface; the sulfur-nitrogen-chlorine analyzer mainframe 2 consists of a single-chip microcomputer control system and a lower computer control software; the sulfur detection module 3 uses the ultraviolet fluorescence method to detect the sulfur element content; the nitrogen detection module 4 uses the chemiluminescence method to detect the nitrogen element content; the chlorine detection module 5 uses the microcoulometry method to detect the chlorine element content; the reaction gas control module 6 includes a flow controller, a gas pressure stabilizing valve, etc., and is used to control the flow rates of the carrier gas and the reaction gas required during the pyrolysis of the sample; the sample pyrolysis module 7 includes a high-temperature pyrolysis furnace 10, a sample pyrolysis quartz tube 12, a temperature controller, a self-constant temperature gas distribution unit 11, etc., and is used for the high-temperature pyrolysis of the sample to be measured. The high-temperature pyrolysis furnace 10 can be freely switched between horizontal placement and vertical placement. When the high-temperature pyrolysis furnace 10 is horizontally placed, a solid sampler can be configured to analyze viscous samples and solid samples. When the high-temperature pyrolysis furnace 10 is vertically placed, a liquid injection module 8 and a gas injection module 9 can be configured to analyze liquid samples and gas samples; the liquid injection module 8 is a multi-position liquid full-automatic sequential injector, including a microinjector, a sample tray, sample bottles, a rotating arm device, etc., and is used to inject the liquid sample to be measured into the sample pyrolysis module 7; the gas injection module 9 is a multi-position gas full-automatic sequential injector, including a multi-position switching valve, an injection pump, a high-pressure liquid pressure reducing valve, etc., and is used to input the liquid gas sample or gas sample to be measured into the sample pyrolysis module 7; The advantages of the present invention are: one instrument can detect three elements of sulfur, nitrogen, and chlorine, saving the analysis and detection cost; it can perform full-automatic sequential injection detection on liquid samples and gas samples. When the high-temperature pyrolysis furnace 10 is horizontally placed, it can also detect viscous samples and solid samples, realizing unattended analysis, saving labor, and meeting the requirements of modern laboratories for analytical instruments.

[0034] Specifically, the sulfur detection module 3 uses the ultraviolet fluorescence method to detect the sulfur element content, including components such as an ultraviolet lamp 20, a lamp power supply 21, a fluorescence chamber 18, and a first photomultiplier tube 19. The first photomultiplier tube 19 receives the fluorescence signal generated by sulfur and converts it into an electrical signal and transmits it to the sulfur, nitrogen, and chlorine analyzer host 2. The nitrogen detection module 4 uses the chemiluminescence method to detect the nitrogen element content, including components such as a chemiluminescence chamber 22, a second photomultiplier tube 26, and an ozone generator 23. The sample cracking gas enters the inside of the chemiluminescence chamber 22 through the second outlet pipe 13, the fluorescence chamber 18, and the fourth outlet pipe 24. The ozone generator 23 inputs ozone into the inside of the chemiluminescence chamber 22 through the fifth outlet pipe 25. The second photomultiplier tube 26 receives the chemiluminescence signal generated by nitrogen and converts it into an electrical signal and transmits it to the sulfur, nitrogen, and chlorine analyzer host 2. The waste gas inside the chemiluminescence chamber 22 can be discharged through the return pipe 28, the second outlet pipe 13, and the exhaust pipe. The chlorine detection module 5 uses the microcoulometry method to detect the chlorine element content, including components such as a dehydration tank 15, a third outlet pipe 16, and a chlorine detection electrolytic cell 17. The chlorine detection electrolytic cell 17 transmits the electrochemical signal generated by chlorine to the sulfur, nitrogen, and chlorine analyzer host 2. The reaction gas control module 6 includes components such as a flow controller and a gas pressure stabilizing valve, and is used to control the flow rates of the carrier gas and the reaction gas required during the cracking of the sample to ensure complete cracking of the sample.

[0035] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A sulfur, nitrogen and chlorine integrated analyzer system, characterized in that, It includes a computer workstation (1) and a host of a sulfur, nitrogen, and chlorine analyzer (2) electrically connected to the computer workstation (1). The host of the sulfur, nitrogen, and chlorine analyzer (2) is electrically connected to a sulfur detection module (3), a nitrogen detection module (4), a chlorine detection module (5), a reaction gas control module (6), and a sample cracking module (7). The nitrogen detection module (4) is connected to the reaction gas control module (6). The sample cracking module (7) includes a high-temperature cracking furnace (10). Inside the high-temperature cracking furnace (10), there is a cracking quartz tube (12). The inlet of the cracking quartz tube (12) is connected to a liquid injection module (8), a gas injection module (9), and the reaction gas control module (6). The outlet of the cracking quartz tube (12) is connected to a gas distribution unit (11). The gas distribution unit (11) is connected to the chlorine detection module (5) through a first outlet pipe (14), and the gas distribution unit (11) is connected to the sulfur detection module (3) through a second outlet pipe (13). The sulfur detection module (3) is connected to the nitrogen detection module (4).

2. The sulfur, nitrogen, and chlorine integrated analyzer system according to claim 1, wherein The gas injection module (9) includes a pressure reducing valve, an injection pump, and a switching valve. The input end of the pressure reducing valve is the sample gas inlet. The output end of the pressure reducing valve is connected to the input end of the injection pump. The output end of the injection pump is connected to the input end of the switching valve. The output end of the switching valve is connected to the inlet of the cracking quartz tube (12).

3. The sulfur-nitrogen-chlorine integrated analyzer system according to claim 1, wherein The high-temperature cracking furnace (10) is connected to a temperature controller.

4. The sulfur-nitrogen-chlorine integrated analyzer system according to claim 1, wherein The chlorine detection module (5) includes a dehydration cell (15). The dehydration cell (15) is connected to the first outlet pipe (14). The dehydration cell (15) is connected to a chlorine detection electrolytic cell (17) through a third outlet pipe (16).

5. The sulfur-nitrogen-chlorine integrated analyzer system according to claim 1, wherein, The sulfur detection module (3) includes a fluorescence chamber (18). The fluorescence chamber (18) is connected to the second outlet pipe (13). On the outer wall of the fluorescence chamber (18), there are a first photomultiplier tube (19) and an ultraviolet lamp (20). The ultraviolet lamp (20) is connected to a lamp power supply (21).

6. The sulfur, nitrogen and chlorine integrated analyzer system according to claim 5, characterized in that, The nitrogen detection module (4) includes a chemiluminescence chamber (22) and an ozone generator (23). The fluorescence chamber (18) is connected to the chemiluminescence chamber (22) through a fourth outlet pipe (24). The ozone generator (23) is connected to the chemiluminescence chamber (22) through a fifth outlet pipe (25). On the outer wall of the chemiluminescence chamber (22), there is a second photomultiplier tube (26). The ozone generator (23) is connected to the reaction gas control module (6).

7. The sulfur, nitrogen, and chlorine integrated analyzer system according to claim 6, wherein The chemiluminescence chamber (22) is connected to the second outlet pipe (13) through a return pipe (28). There is an exhaust pipe on the second outlet pipe (13).

8. The sulfur-nitrogen-chlorine integrated analyzer system according to claim 1, wherein The computer workstation (1) is electrically connected to a display screen (27).

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