System for monitoring electronic-grade ultra-pure ammonia raw material in pipeline conveying mode

Abstract

The utility model discloses a system for monitoring an electronic-grade ultra-pure ammonia raw material in a pipeline conveying mode, which comprises a sampler provided with a liquid inlet pipe, an ammonia discharge pipe, a blow-down pipe, an analysis pipe and a vacuumizing pipe, the sampler is respectively connected with a liquid ammonia unloading crane pipe, a liquid ammonia raw material tank, an emptying header pipe, an analyzer and a first vacuum pump through a liquid inlet pipe, an ammonia unloading pipe, an emptying pipe, an analysis pipe and a vacuumizing pipe, and the liquid inlet pipe, the ammonia unloading pipe, the emptying pipe, the sampling analysis pipe and the vacuumizing pipe are respectively provided with a first valve, a second valve, a third valve, a fourth valve and a fifth valve; and a first electric tracing band is also arranged on the sampler. The system is used for detecting components of raw material liquid ammonia when the raw material liquid ammonia enters a factory, the raw material can be detected before being unloaded and entering a liquid ammonia raw material tank, the trouble that the raw material is reloaded and returned due to the fact that the raw material is unqualified is avoided, and beforehand control of the raw material entering the factory is effectively achieved; the operation safety and the detection quality of test personnel are improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic-grade ultrapure ammonia quality monitoring technology, specifically a system for monitoring electronic-grade ultrapure ammonia raw materials using pipeline transportation. Background Technology

[0002] Currently, to ensure the production quality of electronic-grade ultrapure ammonia, the laboratory needs to test the composition of each batch of raw liquid ammonia upon arrival at the plant. Laboratory personnel typically use a portable sampler for sampling and testing, according to… Figure 1 The procedure shown involves connecting the portable sampler's interface, draining the waste ammonia from the sampler, and then starting the sampling process. After sampling, the valve is closed, and the personnel take the portable sampler to the analysis laboratory for testing. This traditional sampling method requires personnel to connect the portable sampler via a threaded connection for each sampling, resulting in numerous operational steps, a high risk of liquid ammonia leakage, and the inability to control quality before the sample enters the tank. Incomplete replacement of the portable sampler can also lead to significant deviations in the test results. Utility Model Content

[0003] This invention addresses the problems mentioned in the background section by providing a system for monitoring electronic-grade ultrapure ammonia raw materials via pipeline transportation. This system is used to detect the components of liquid ammonia raw materials upon their arrival at the plant, improving the operational safety and testing quality for laboratory personnel and preventing safety accidents caused by errors in connecting mobile samplers.

[0004] This utility model provides a system for monitoring electronic-grade ultrapure ammonia raw materials using pipeline transportation, including a sampler. The sampler is equipped with an inlet pipe, an ammonia unloading pipe, a vent pipe, an analysis pipe, and a vacuum pipe. The sampler is connected to the liquid ammonia unloading arm, the liquid ammonia raw material tank, the vent main pipe, the analyzer, and the first vacuum pump through the inlet pipe, the ammonia unloading pipe, the vent pipe, the analysis pipe, and the vacuum pipe, respectively. The inlet pipe, the ammonia unloading pipe, the vent pipe, the sampling and analysis pipe, and the vacuum pipe are respectively equipped with a first valve, a second valve, a third valve, a fourth valve, and a fifth valve. The sampler is also equipped with a first electric heating tape.

[0005] Furthermore, the outlet end of the sampling analysis tube is connected to two branch pipes, which are respectively connected to the second vacuum pump and the analyzer. A sixth valve is installed on the branch pipe between the sampling analysis tube and the second vacuum pump, and a seventh valve is installed on the branch pipe between the sampling analysis tube and the analyzer.

[0006] Furthermore, the sampling analysis tube is equipped with at least one second electric heating cable.

[0007] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0008] 1. The present invention relates to a system for monitoring electronic-grade ultrapure ammonia raw materials using pipeline transportation. This system is used to detect the composition of raw liquid ammonia when it enters the plant. The detection can be performed before the raw materials are unloaded and enter the liquid ammonia raw material tank, avoiding the trouble of reloading and returning the raw materials due to their unqualified nature, and effectively achieving pre-control of raw materials entering the plant.

[0009] 2. This utility model provides a system for monitoring electronic-grade ultrapure ammonia raw materials using pipeline transportation. This reduces the frequency of on-site sampling by personnel, eliminates the need for frequent installation and disassembly of samplers by laboratory personnel, increases efficiency, improves operational safety for laboratory personnel, and avoids safety accidents caused by errors in connecting mobile samplers, thus ensuring safety. It also avoids the problem of data deviation caused by contamination from transferring mobile samplers during sampling, thereby improving the quality of testing. Attached Figure Description

[0010] Figure 1 This is a schematic diagram illustrating the sampling and testing of incoming liquid ammonia using an existing portable sampler.

[0011] Figure 2 This is a schematic diagram of a system for monitoring electronic-grade ultrapure ammonia feedstock using a pipeline transportation method according to this utility model;

[0012] In the diagram: 1-sampler, 2-inlet pipe, 3-first valve, 4-liquid ammonia unloading arm, 5-ammonia unloading pipe, 6-second valve, 7-liquid ammonia raw material tank, 8-vent pipe, 9-third valve, 10-first electric heating tape, 11-sampling and analysis tube, 12-analyzer, 13-fourth valve, 14-second electric heating tape, 15-vacuum tube, 16-first vacuum pump, 17-fifth valve, 18-second vacuum pump, 19-sixth valve, 20-seventh valve. Detailed Implementation

[0013] To more clearly illustrate the technical solution and effects of this utility model, the present utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely some embodiments of this utility model, not all embodiments, and the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0014] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature marked "first" or "second" may explicitly or implicitly include one or more of that feature. Unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they may refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting; they may refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components.

[0015] Please see Figure 2 This embodiment provides a system for monitoring electronic-grade ultrapure ammonia feedstock using pipeline transportation, including a sampler 1. The sampler 1 is equipped with an inlet pipe 2, an ammonia unloading pipe 5, a vent pipe 8, an analysis pipe, and a vacuum pipe 15. The sampler 1 is connected to the liquid ammonia unloading arm 4, the liquid ammonia feedstock tank 7, the vent main pipe, the analyzer 12, and the first vacuum pump 16 through the inlet pipe 2, the ammonia unloading pipe 5, the vent pipe 8, the analysis pipe, and the vacuum pipe 15, respectively. The inlet pipe 2, the ammonia unloading pipe 5, the vent pipe 8, the sampling and analysis pipe 11, and the vacuum pipe 15 are respectively equipped with a first valve 3, a second valve 6, a third valve 9, a fourth valve 13, and a fifth valve 17. The sampler 1 is also equipped with a first electric heating tape 10.

[0016] In this embodiment, the sampler 1 is installed on the pipeline between the liquid ammonia unloading arm 4 and the liquid ammonia raw material tank 7 to form an online monitoring system. This system is used to detect the composition of each batch of raw liquid ammonia when it enters the plant. After passing the test, the raw liquid ammonia is unloaded into the liquid ammonia raw material tank 7.

[0017] Specifically, to empty the previous batch of liquid ammonia remaining in the sampling and analysis tube 11 and avoid large deviations in test results due to incomplete replacement of the sampling and analysis tube 11, two branch pipes are connected to the outlet end of the sampling and analysis tube 11, which are respectively connected to the second vacuum pump 18 and the analyzer 12. A sixth valve 19 is installed on the branch pipe between the sampling and analysis tube 11 and the second vacuum pump 18, and a seventh valve 20 is installed on the branch pipe between the sampling and analysis tube 11 and the analyzer 12. The second vacuum pump 18 and the analyzer 12 are both located in the analytical laboratory.

[0018] Specifically, to avoid the problem of liquid ammonia appearing at the analyzer 12 due to poor insulation effect of the first electric heating tape 10 caused by the long distance of the sampling pipeline and the long replacement time, at least one second electric heating tape 14 is provided on the sampling analysis tube 11.

[0019] The working principle of this utility model is as follows: After the raw material liquid ammonia arrives, open valves 1 (valve 3) and 3 (valve 9) to vent the sampler 1 and the remaining raw material liquid ammonia in the pipeline to the venting main pipe. This process takes about 1-2 minutes. After the venting is completed, close valves 1 (valve 3) and 3 (valve 9), and open valve 5 (valve 17). Use vacuum pump 16 to evacuate sampler 1. This process is expected to be completed in 3-4 minutes. After the vacuuming is completed, close valve 17, and open valves 1 (valve 3), 4 (valve 13), and 6 (valve 19). At the same time, open the first electric heating tape 10, the second electric heating tape 14, and the second vacuum pump 16. The empty pump 18, the first electric heating cable 10, and the second electric heating cable 14 heat the material remaining in the sampler 1 and the sampling analysis tube 11, and then the material is evacuated by the second vacuum pump 18. Then, the sixth valve 19 and the second vacuum pump 18 are closed, the seventh valve 20 is opened, and the liquid ammonia unloading arm 4 is controlled to send the liquid ammonia to be tested into the sampler 1. The first electric heating cable 10 heats and vaporizes the liquid ammonia in the sampler 1 and then it enters the analyzer 12. After the analyzer 12 tests the results and finds them to be qualified, the fourth valve 13, the seventh valve 20, the first electric heating cable 10, and the second electric heating cable 14 are closed, and the second valve 6 is opened to start unloading. The liquid ammonia is unloaded and stored in the liquid ammonia raw material tank 7.

[0020] The above description is a preferred embodiment of the present utility model, used to explain the technical solution of the present utility model, and is not intended to limit the present utility model. Those skilled in the art can make conventional modifications, equivalent substitutions and improvements within the spirit and principles of the present utility model, all of which are still included within the protection scope of the present utility model.

Claims

1. A system for monitoring electronic-grade ultrapure ammonia feedstock via pipeline transportation, comprising a sampler, characterized in that: The sampler is equipped with an inlet pipe, an ammonia unloading pipe, a vent pipe, an analysis pipe, and a vacuum pipe. The sampler is connected to the liquid ammonia unloading arm, the liquid ammonia raw material tank, the vent main pipe, the analyzer, and the first vacuum pump through the inlet pipe, the ammonia unloading pipe, the vent pipe, the analysis pipe, and the vacuum pipe, respectively. The inlet pipe, the ammonia unloading pipe, the vent pipe, the sampling and analysis pipe, and the vacuum pipe are respectively equipped with a first valve, a second valve, a third valve, a fourth valve, and a fifth valve. The sampler is also equipped with a first electric heating tape.

2. The system for monitoring electronic-grade ultrapure ammonia feedstock using pipeline transportation as described in claim 1, characterized in that: The sampling analysis tube outlet is connected to two branch pipes, which are respectively connected to the second vacuum pump and the analyzer. A sixth valve is installed on the branch pipe between the sampling analysis tube and the second vacuum pump, and a seventh valve is installed on the branch pipe between the sampling analysis tube and the analyzer.

3. The system for monitoring electronic-grade ultrapure ammonia feedstock using pipeline transportation as described in claim 1, characterized in that: The sampling and analysis tube is equipped with at least one second electric heating cable.

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