Intelligent analysis system for carbon, sulfur and nitrogen

Abstract

The invention provides an intelligent carbon, sulfur and nitrogen analysis system, and relates to the technical field of carbon, sulfur and nitrogen analysis, the intelligent carbon, sulfur and nitrogen analysis system comprises a scrap sample collection device, a pneumatic sample feeding system, a robot, a milling machine, a crucible treatment furnace, a carbon and sulfur instrument and an oxygen and nitrogen instrument, the scrap sample collection device, the pneumatic sample feeding system, the robot, the milling machine, the crucible treatment furnace, the carbon and sulfur instrument and the oxygen and nitrogen instrument form an automatic gas analysis ring; automatic sample preparation, automatic analysis and automatic result uploading of carbon, sulfur and nitrogen are realized. According to the intelligent carbon, sulfur and nitrogen analysis system, samples are sent to a laboratory from a steelmaking site in a pneumatic mode, after the samples are received by a pneumatic receiving end, a robot moves to clamp the samples to a milling machine for sample preparation, the prepared blocky samples are used for spectral analysis, meanwhile, scrap samples are collected for carbon, sulfur and nitrogen analysis, and the scrap samples are conveyed to a designated mechanism through an air pipe; weighing in a crucible, automatically analyzing by using a gas analyzer, adopting helium as a carrier gas by using an oxygen-nitrogen instrument, and firstly analyzing and then degassing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of carbon, sulfur and nitrogen analysis, in particular to an intelligent carbon, sulfur and nitrogen analysis system. BACKGROUND

[0002] The existing carbon, sulfur and nitrogen analysis process is as follows: a racket sample or a cut bucket sample is milled to remove the surface oxide layer, a drill bit is used to drill a sample on the milled surface, the sample is weighed and then analyzed by a carbon and sulfur analyzer or an oxygen and nitrogen analyzer, the data is manually transmitted to an information system, and the sample is manually labeled and archived; if the sample needs to be analyzed by spectroscopy, the sample is manually drilled after milling after the spectroscopy is completed, and the above process is repeated, or two samples are simultaneously sent to alleviate the timeliness problem, and the spectroscopy and the carbon, sulfur and nitrogen analysis are simultaneously performed.

[0003] In the existing analysis mode, in addition to taking a spectroscopy sample, a racket sample needs to be taken for carbon, sulfur and nitrogen analysis, or a sample is drilled after milling after the spectroscopy is completed, and the racket sample is often hollow after drilling, which affects the carbon, sulfur and nitrogen analysis results. The bucket sample with relatively stable data needs to be analyzed by carbon, sulfur and nitrogen after spectroscopy is completed, and the analysis cycle is 11 minutes, which cannot meet the rapid production requirement. The sample drilling, analysis and other processes need to be manually completed, and the labor intensity is high. In the traditional oxygen and nitrogen analyzer analysis process, the quality is inputted and degassed before analysis, and the single sample analysis time is long. Helium is used as the carrier gas, and the cost is high. SUMMARY

[0004] The present application is made in view of the above problems, and aims to provide an intelligent carbon, sulfur and nitrogen analysis system to solve the problems in the background art. Specifically, the present application provides the following technical solution: an intelligent carbon, sulfur and nitrogen analysis system, comprising: A sample collection device: comprising a milling machine, an air pipe, a fan and a collector, wherein the milling machine is used for processing a steel sample and generating a sample, and the sample is transmitted to the collector through the air pipe and negative pressure; An air-driven sample delivery system: used for transmitting the on-site sample to the laboratory to realize rapid transmission of the sample; A robot: responsible for clamping and delivering the sample in the laboratory, and performing sample preparation, analysis and other tasks; A milling machine: used for sample preparation, removing the surface oxide layer and collecting the sample; A crucible treatment furnace: used for weighing and adding a fluxing agent when processing and analyzing the sample; A carbon and sulfur analyzer: used for analyzing the carbon and sulfur content in the sample; An oxygen and nitrogen analyzer: used for analyzing the oxygen and nitrogen content in the sample, and the carrier gas is changed from helium to argon to reduce the cost; The sample collection device, the air-driven sample delivery system, the robot, the milling machine, the crucible treatment furnace, the carbon and sulfur analyzer and the oxygen and nitrogen analyzer form an automatic gas analysis loop, and realize automatic sample preparation, automatic analysis and automatic result uploading of carbon, sulfur and nitrogen.

[0005] Furthermore, the system also includes: Laboratory System Automation (SPS): Coordinates the actions of all equipment in the system, monitors the system status, and assigns tasks. Laboratory communication management system: responsible for communication with the host computer, automatically matching sample information and uploading analysis data; Instrument communication software: responsible for receiving and displaying sample and variety information sent by SPS to the analytical instrument, collecting and uploading analytical data, and converting it into a unified communication format.

[0006] Furthermore, the system's workflow includes the following steps: S1. Sample delivery and receipt: Thickened racket samples or bucket samples are sent to the laboratory on site via a pneumatic sample delivery system. The laboratory automatically unloads the samples and returns them to empty boxes. S2. Sample preparation: The robotic arm takes a sample and sends it to a fully automatic milling machine. The sample first removes the surface oxide layer, then chamfers and collects the chip sample. S3. Carbon and sulfur analysis: The collected scrap samples are weighed, flux is added, and then placed in a crucible for automatic carbon and sulfur analysis using a carbon and sulfur analyzer. S4. Oxygen and nitrogen analysis: Place the weighed crucible on the lower electrode of the nitrogen analyzer for automatic down-injection nitrogen analysis, or pour the sample into the injection port for up-injection analysis. S5. Result Processing and Uploading: Based on the range of the two analysis results, process and upload the results. At the same time, the system prompts the operator whether to retain the remaining material. After clearing the remaining sample, the process ends.

[0007] Furthermore, in step S2, the chip sample is conveyed to the designated sample receiving mechanism via a conveying device, and the block sample is then finely milled for automatic spectral analysis.

[0008] Furthermore, in step S3, after receiving the information, the robot moves to the designated position and removes the crucible from the sample holder. The crucible is then placed directly on the carbon-sulfur analyzer's analysis tray for automatic carbon-sulfur analysis. After the analysis is completed, the crucible is placed into the waste crucible box.

[0009] Furthermore, in step S4, after the analysis is completed, the standard crucible and the nested crucible are respectively discarded into the waste crucible box or placed on the sample dispensing platform for later use.

[0010] Furthermore, in step S5, if the range of the two analysis results does not exceed the standard repeatability limit r, the average result of the two points is uploaded; if it exceeds the standard repeatability limit r, a third analysis is performed, and if the range of the three analysis results does not exceed 1.2 * the standard repeatability limit r, the average of the three results is uploaded. The standard samples are automatically analyzed and calibrated. The system automatically analyzes the standard sample after manual weighing. If the range between two analyses does not exceed the standard repeatability limit r, and the absolute value of the difference between the analyzed value and the standard value does not exceed the standard cd0.95 critical value, the system will automatically calibrate and generate calibration coefficients.

[0011] Furthermore, the laboratory central control process automation control system is mainly responsible for manually receiving samples and carrying out operations such as transportation, processing, analysis and packaging of the samples. It receives production instructions from the host computer, issues control instructions to the equipment, and counts the running time and failure rate of each process of the sample.

[0012] Furthermore, the laboratory central control process automation control system monitors the status of each part of the entire system and coordinates tasks according to the status of each part, assigning appropriate work tasks to different devices, including but not limited to receiving samples at the sample receiving terminal, confirming sample information, coordinating the actions of each sub-SPS system, distributing samples, monitoring the operation status of the entire system, recording and displaying faults, selecting sample processing programs, processing equipment (stations) and analytical instrument paths according to the variety and sample code, setting instrument on / off status, calculating the running time and failure rate of each process of the sample, transmitting sample information and statistical analysis cycle.

[0013] Furthermore, the laboratory communication management system receives the sample code generated on-site, sends the sample code to the analyzer PC through the laboratory process control system, collects analytical data from different analytical instruments, and uploads the summarized analytical data to the host computer; the host computer displays, saves, and queries the analytical results, and automatically generates quality control charts based on equipment standard samples and quality control samples to reflect the status of the analytical equipment in real time.

[0014] This invention provides an intelligent carbon, sulfur, and nitrogen analysis system. Samples are pneumatically delivered from the steelmaking site to the laboratory. Upon receiving the sample, a robot moves and grips it, placing it on a milling machine for sample preparation. The prepared block-shaped sample is used for spectral analysis. Simultaneously, slag samples are collected for carbon, sulfur, and nitrogen analysis. These slag samples are transported via duct to a designated facility, weighed, and automatically analyzed by a gas analyzer inside a crucible. The oxygen and nitrogen analyzer uses helium as the carrier gas, performing analysis followed by degassing. This system offers the following advantages: 1. In this invention, all analytical instruments and equipment are arranged around the robotic arm. There are multiple workstations for sample reception. Following the instructions of the Laboratory Standard Process Automation (SPS) control system, the robotic arm picks up and transfers samples between these workstations. Each workstation automatically senses the task and executes the program accordingly. This method overcomes key technical challenges such as sample collection, automatic standard analysis of gas analyzers, automatic carbon, sulfur, and nitrogen analysis, and automatic management of elemental tolerances. It automates the sample processing flow, the carbon, sulfur, and nitrogen gas analysis and detection process, and the information flow process, achieving fully automated and rapid analysis of carbon, sulfur, and nitrogen in steel smelting. This fills a domestic gap, and its main technical indicators are at an internationally advanced level.

[0015] 2. The intelligent carbon, sulfur and nitrogen analysis system provided by this invention greatly reduces labor intensity and saves manpower. It automatically receives, processes, analyzes and uploads samples, improving work efficiency by 50%.

[0016] 3. The present invention integrates technologies such as pneumatic sample delivery, milling machine, robot, chip collection device, carbon-sulfur analyzer, oxygen-nitrogen analyzer, and computer, realizing fully automatic and rapid analysis of carbon, sulfur, and nitrogen in steel. It has a full-load working mechanism, fast sample processing speed, high efficiency, fast analysis speed, high accuracy, and high production efficiency.

[0017] 4. This invention uses thickened racket samples or bucket samples. The intelligent carbon, sulfur, and nitrogen analysis system provided by this patent has a spectral analysis time of within 3 minutes and a carbon, sulfur, and nitrogen analysis time of within 5 minutes. Compared to the original 11 minutes analysis time using bucket samples, this invention can shorten the analysis time by 6 minutes. Using this system is of great significance in saving smelting sample waiting time, reducing energy consumption and fixed cost consumption, providing valuable smelting time for production, and providing a strong guarantee for rapid output increase. It can produce more steel and has great economic benefits. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this drawing or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this drawing. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a sample collection device for an intelligent carbon, sulfur, and nitrogen analysis system according to the present invention. Figure 2 This is a process flow diagram of an intelligent carbon, sulfur, and nitrogen analysis system according to the present invention. Figure 3 The figure shows the experimental results of nitrogen element accuracy in the modified analysis process of the intelligent carbon, sulfur and nitrogen analysis system of the present invention. Figure 4 The figure shows the experimental results of nitrogen element precision in the modified analysis process of the intelligent carbon, sulfur and nitrogen analysis system of the present invention. Figure 5 This is an experimental result diagram showing the accuracy of nitrogen element analysis in a carbon, sulfur, and nitrogen intelligent analysis system according to the present invention, by changing the carrier gas. Figure 6 This is a diagram showing the experimental results of changing the carrier gas nitrogen element precision of an intelligent carbon, sulfur and nitrogen analysis system according to the present invention. Figure 7This is a graph showing the comparison results of nitrogen elements in different carrier gases for different analysis processes in the intelligent carbon, sulfur, and nitrogen analysis system of the present invention.

[0020] Explanation of icon numbers: 1. Milling machine; 2. Air duct; 3. Fan; 4. Collector.

[0021] The purpose, features, and advantages of this accompanying drawing will be further explained in conjunction with the embodiments and with reference to the accompanying drawing. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following description and illustration are provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0023] Obviously, the following description is merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios without any inventive effort. Furthermore, it is understood that although the effort involved in such development may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0024] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.

[0025] Unless otherwise specified, the term "or" is inclusive in this application. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, the condition "A or B" is satisfied by any of the following conditions: A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0026] Example 1 like Figures 1-2 As shown, an intelligent carbon, sulfur, and nitrogen analysis system includes: Scraping collection device: includes a milling machine, air duct, fan and collector, wherein the milling machine is used to process steel samples and generate scrap samples, which are conveyed to the collector through air duct and negative pressure.

[0027] Pneumatic sample delivery system: used to transport on-site samples to the laboratory, enabling rapid sample transfer.

[0028] Robots are responsible for picking up and transferring samples in the laboratory, and performing tasks such as sample preparation and analysis.

[0029] Milling machine: Used for sample preparation, removing the surface oxide layer and collecting the chip sample.

[0030] Crucible processing furnace: Used for weighing and adding flux when processing and analyzing samples.

[0031] Carbon and sulfur analyzer: used to analyze the carbon and sulfur content in a sample.

[0032] Oxygen and nitrogen analyzer: used to analyze the oxygen and nitrogen content in samples, and the carrier gas has been changed from helium to argon to reduce costs.

[0033] The Laboratory Standard Process Automation (SPS) system coordinates the actions of all equipment in the system. It is primarily responsible for manually receiving samples and handling their transportation, processing, analysis, and packaging. It also monitors system status and assigns tasks. In this embodiment, the SPS receives production instructions from the host computer, issues control commands to the equipment, and calculates the running time and failure rate of each process. Simultaneously, the SPS monitors the status of each part of the entire system and coordinates tasks based on their status, assigning appropriate tasks to different equipment. These tasks include, but are not limited to, receiving samples at the receiving terminal, confirming sample information, coordinating the actions of each sub-SPS system, allocating samples, monitoring the overall system operation status, recording and displaying faults, selecting sample processing programs based on product type and sample code, configuring processing equipment (stations) and analytical instrument paths, setting instrument on / offline status, calculating the running time and failure rate of each process, transmitting sample information, and calculating the statistical analysis cycle.

[0034] The laboratory communication management system is responsible for communication with the host computer. Information such as furnace number, tapping mark, and time issued by the system is automatically matched with the sample and automatically imported into the analytical equipment. In this embodiment, the laboratory communication management system receives the sample code generated on-site and sends it to the analyzer PC through the laboratory process control system. It collects analytical data from different analytical instruments and uploads the summarized analytical data to the host computer. The host computer displays, saves, and queries the analytical results, and automatically generates quality control charts based on equipment standard samples and quality control samples, reflecting the real-time status of the analytical equipment.

[0035] Instrument communication software: This software is responsible for receiving and displaying sample and type information sent to the analytical instruments by the SPS, collecting and uploading analytical data, and converting data into a unified communication format. In this embodiment, the software receives and displays sample and type information sent to the analytical instruments by the SPS, collects analytical data from the gas analyzer and uploads it to the laboratory communication management system, and collects analytical data from the offline analyzer and uploads it to the laboratory communication management system. Simultaneously, it converts the communication formats of various analytical instruments into a unified communication format, assisting both the analytical instruments and the user in handling complex tasks.

[0036] In this system, the chip collection device, the pneumatic sample delivery system, the robot, the milling machine, the crucible processing furnace, the carbon-sulfur analyzer, and the oxygen-nitrogen analyzer form an automatic gas analysis circle, realizing automatic sample preparation, automatic analysis, and automatic result uploading of carbon, sulfur, and nitrogen.

[0037] The workflow of this intelligent carbon, sulfur, and nitrogen analysis system includes the following steps: S1. Sample delivery and receipt: Thickened racket samples or bucket samples are sent to the laboratory on-site via a pneumatic sample delivery system. The laboratory automatically unloads the samples and returns them to empty containers.

[0038] S2. Sample Preparation: The robotic arm picks up the sample and sends it to a fully automated milling machine. The surface oxide layer of the sample is removed, and after chamfering, the chip sample is collected. The chip sample is then conveyed to a designated sample receiving mechanism via a conveyor. The block sample is then finely milled for automated spectral analysis.

[0039] S3, Carbon and Sulfur Analysis: The collected slag samples were weighed, and after adding flux, they were placed in a crucible. After receiving the information, the robot moves into position and takes the crucible from the sample rack, placing the crucible directly on the carbon and sulfur analyzer's analysis plate for automatic carbon and sulfur analysis. After the analysis is completed, the robot puts the crucible into the waste crucible box.

[0040] S4, Oxygen and Nitrogen Analysis: After receiving the information, the robot moves into position and takes away the weighed crucible. Place the weighed crucible on the lower electrode of the nitrogen analyzer for automatic bottom-injection nitrogen analysis, or pour the sample into the injection port for top-injection analysis. After the analysis is completed, the standard crucible and the nested crucible are respectively discarded into the waste crucible box or placed on the sample dispensing platform for later use.

[0041] S5. Result Processing and Uploading: Based on the range of the two analysis results, the results are processed and uploaded. Simultaneously, the system prompts the operator whether to retain any remaining samples. The process ends after clearing the remaining samples. In this step, if the range of the two analysis results does not exceed the standard repeatability limit r, the average result of the two points is uploaded. If it exceeds the standard repeatability limit r, a third analysis is performed. If the range of the three analysis results does not exceed 1.2 * the standard repeatability limit r, the average of the three results is uploaded.

[0042] In this embodiment, the standard sample is automatically analyzed and calibrated: after the standard sample is manually weighed, the system automatically analyzes it; when the range between the two analyses does not exceed the standard repeatability limit r, and the absolute value of the difference between the analyzed value and the standard value does not exceed the standard cd0.95 critical value, the system automatically calibrates and generates calibration coefficients.

[0043] Experimental Example 1 After modifying the oxygen and nitrogen analyzer's analytical procedure, five certified reference materials were analyzed three times each, and the average value was calculated to assess the accuracy of the nitrogen element reference material analysis. (See attached document.) Figure 3 .

[0044] Experimental Example 2 After changing the oxygen and nitrogen analyzer's analytical procedure, nitrogen element analysis was performed 10 times consecutively using three standard reference materials. The standard deviation was statistically analyzed, and the analytical precision of the nitrogen element standard reference materials was evaluated. (See attached document.) Figure 4 .

[0045] Experiment Example 3 Argon was used as the carrier gas. Five certified reference materials were analyzed three times each, and the average value was calculated to evaluate the accuracy of the nitrogen element reference material analysis. (See below) Figure 5 .

[0046] Experiment Example 4 Argon was used as the carrier gas. Nitrogen elements from three standard reference materials were analyzed 10 times consecutively. The standard deviations were statistically analyzed to assess the precision of the nitrogen elemental reference materials. (See attached document.) Figure 6 .

[0047] Experimental Example 5 Ten flaky samples were analyzed using the original analytical procedure with helium as the carrier gas and the existing analytical procedure with argon as the carrier gas. Each sample was analyzed three times, and the average value was calculated. Nitrogen elemental analysis was compared. (See attached table.) Figure 7 .

[0048] Conclusion: Traditional oxygen and nitrogen analyzers use helium as the carrier gas, requiring degassing before analysis. Helium is expensive, costing approximately 2000 yuan per 40L bottle, and a single sample analysis takes 5 minutes. This case study replaces helium with argon as the carrier gas, costing only about 500 yuan per 40L bottle. The oxygen and nitrogen analyzer analyzes first and then degasses; after sample preparation, the mass is input for direct analysis, and degassing is performed after analysis to prepare for the next sample. When there are no samples queuing, the analysis time is only 3 minutes, saving degassing time. Simultaneously, the analyzer parameters were adjusted, reducing the power from 5500 watts to 5300 watts and extending the nitrogen element integration time from 40s to 45s, thus extending the instrument's lifespan.

[0049] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. An intelligent carbon, sulfur, and nitrogen analysis system, characterized in that, include: Scraping collection device: includes a milling machine, air duct, fan and collector, wherein the milling machine is used to process steel samples and generate scrap samples, which are conveyed to the collector through air duct and negative pressure; Pneumatic sample delivery system: used to transport samples from the field to the laboratory, enabling rapid sample transfer; Robot: Responsible for picking up and transferring samples in the laboratory, and performing sample preparation and analysis tasks; Milling machine: used for sample preparation, removing the surface oxide layer and collecting chip samples; Crucible processing furnace: used for weighing and adding flux when processing and analyzing samples; Carbon-sulfur analyzer: used to analyze the carbon and sulfur content in samples; Oxygen and nitrogen analyzer: used to analyze the oxygen and nitrogen content in samples, with the carrier gas changed from helium to argon; The chip collection device, pneumatic sample delivery system, robot, milling machine, crucible processing furnace, carbon-sulfur analyzer, and oxygen-nitrogen analyzer form an automatic gas analysis system, realizing automatic sample preparation, automatic analysis, and automatic result uploading of carbon, sulfur, and nitrogen.

2. The intelligent carbon, sulfur, and nitrogen analysis system according to claim 1, characterized in that, The system also includes: Laboratory central control process automation control system: coordinates the actions of all equipment in the system, monitors the system status, and assigns work tasks; Laboratory communication management system: responsible for communication with the host computer, automatically matching sample information and uploading analysis data; Instrument communication software: responsible for receiving and displaying sample and variety information sent by SPS to the analytical instrument, collecting and uploading analytical data, and converting it into a unified communication format.

3. The intelligent carbon, sulfur, and nitrogen analysis system according to claim 2, characterized in that, The system's workflow includes the following steps: S1. Sample delivery and receipt: Thickened racket samples or bucket samples are sent to the laboratory on site via a pneumatic sample delivery system. The laboratory automatically unloads the samples and returns them to empty boxes. S2. Sample preparation: The robotic arm takes a sample and sends it to a fully automatic milling machine. The sample first removes the surface oxide layer, then chamfers and collects the chip sample. S3. Carbon and sulfur analysis: The collected scrap samples are weighed, flux is added, and then placed in a crucible for automatic carbon and sulfur analysis using a carbon and sulfur analyzer. S4. Oxygen and nitrogen analysis: Place the weighed crucible on the lower electrode of the nitrogen analyzer for automatic down-injection nitrogen analysis, or pour the sample into the injection port for up-injection analysis. S5. Result Processing and Uploading: Based on the range of the two analysis results, process and upload the results. At the same time, the system prompts the operator whether to retain the remaining material. After clearing the remaining sample, the process ends.

4. The intelligent carbon, sulfur, and nitrogen analysis system according to claim 3, characterized in that, In step S2, the chip sample is conveyed to the designated sample receiving mechanism through a conveying device, and the block sample is then finely milled for automatic spectral analysis.

5. The intelligent carbon, sulfur, and nitrogen analysis system according to claim 3, characterized in that, In step S3, after receiving the information, the robot moves to the position and takes the crucible off the sample rack. It then places the crucible directly on the carbon-sulfur analyzer's analysis plate for automatic carbon-sulfur analysis. After the analysis is completed, the crucible is placed into the waste crucible box.

6. The intelligent carbon, sulfur, and nitrogen analysis system according to claim 3, characterized in that, In step S4, after the analysis is completed, the standard crucible and the nested crucible are respectively discarded into the waste crucible box or placed on the sample dispensing platform for later use.

7. The intelligent carbon, sulfur, and nitrogen analysis system according to claim 3, characterized in that, In step S5, if the range of the two analysis results does not exceed the standard repeatability limit r, the average result of the two points is uploaded; if it exceeds the standard repeatability limit r, the third analysis is performed. If the range of the three analysis results does not exceed 1.2 * the standard repeatability limit r, the average of the three results is uploaded. The standard samples are automatically analyzed and calibrated. The system automatically analyzes the standard sample after manual weighing. If the range between two analyses does not exceed the standard repeatability limit r, and the absolute value of the difference between the analyzed value and the standard value does not exceed the standard cd0.95 critical value, the system will automatically calibrate and generate calibration coefficients.

8. The intelligent carbon, sulfur, and nitrogen analysis system according to claim 2, characterized in that, The laboratory central control process automation system receives production instructions from the host computer, issues control instructions to the equipment, and calculates the running time and failure rate of each process of the sample.

9. The intelligent carbon, sulfur, and nitrogen analysis system according to claim 2, characterized in that, The laboratory central control process automation control system monitors the status of each part of the entire system and coordinates tasks according to the status of each part, assigning appropriate work tasks to different devices, including but not limited to receiving samples at the sample receiving terminal, confirming sample information, coordinating the actions of each sub-SPS system, distributing samples, monitoring the operation status of the entire system, recording and displaying faults, selecting sample processing programs according to variety and sample code, processing equipment and analytical instrument paths, setting instrument on / off status, statistically analyzing the running time and failure rate of each process of the sample, transmitting sample information and statistical analysis cycle.

10. The intelligent carbon, sulfur, and nitrogen analysis system according to claim 2, characterized in that, The laboratory communication management system receives the sample codes generated on-site and sends them to the analyzer PC through the laboratory process control system. It collects analytical data from different analytical instruments and uploads the summarized analytical data to the host computer. The host computer displays, saves, and queries the analytical results and automatically generates quality control charts based on equipment standard samples and quality control samples to reflect the status of the analytical equipment in real time.

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