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Infrared-spectroscopy online sampling detection system and infrared-spectroscopy online sampling detection method suitable for raw materials of high-purity optical fibers

A detection system and infrared spectroscopy technology, applied in the field of spectral detection and analysis, can solve the problems of cumbersome sample processing, poor sampling process safety, and complicated sampling process, and achieve the effects of protecting safety, shortening sample preparation time, and avoiding manual operations.

Pending Publication Date: 2017-06-27
GRINM GUOJINGHUI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sampling process is very complicated, and the sample processing process is extremely cumbersome.
At the same time, the glass processing bottle used in it has the risk of breaking during the nitrogen purging process, and the safety of the sampling process is poor

Method used

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  • Infrared-spectroscopy online sampling detection system and infrared-spectroscopy online sampling detection method suitable for raw materials of high-purity optical fibers
  • Infrared-spectroscopy online sampling detection system and infrared-spectroscopy online sampling detection method suitable for raw materials of high-purity optical fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] On-line sampling and detection of germanium tetrachloride intermediate products, the operation method is as follows:

[0048] First, the liquid sample pipeline 5 is connected with the sampling port of the germanium tetrachloride purification equipment, and the vacuum pipeline control valve 28 is opened, and the flow rate of the supply gas in the vacuum pipeline 3 is regulated by the vacuum pipeline pressure regulating valve 25, so that the Venturi tube The maximum vacuum produced by the vacuum generator 29 is 720 Torr. Then open the tail gas pipeline control valve 22 and the purge pipeline control valve 11 in sequence, and adjust the pressure of the purge gas in the gas purge pipeline 4 to 0.05Mpa through the purge pipeline pressure regulating valve 7 . The control valve 11 of the purge pipeline and the control valve 22 of the exhaust pipeline are controlled to open and close alternately through the DCS system 2, and the on-off time of the control valve is set to 2s eac...

Embodiment 2

[0057] Sampling and testing of silicon tetrachloride off-line products, the operation method is as follows:

[0058] First, the liquid sample pipeline 5 is connected with the outlet of the silicon tetrachloride off-line product container, and the vacuum pipeline control valve 28 is opened, and the flow of the supply gas in the vacuum pipeline 3 is regulated by the vacuum pipeline pressure regulating valve 25, so that The maximum vacuum produced by the Venturi vacuum generator 29 is 725 Torr. Then open the tail gas pipeline control valve 22 and the purge pipeline control valve 11 in sequence, and adjust the pressure of the purge gas in the gas purge pipeline 4 to 0.08Mpa through the purge pipeline pressure regulating valve 7 . The control valve 11 of the purge pipeline and the control valve 22 of the exhaust pipeline are controlled to open and close alternately through the DCS system 2, and the on-off time of the control valve is set to 1.5s each. The two valves are opened and ...

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Abstract

The invention discloses an infrared-spectroscopy online sampling detection system and an infrared-spectroscopy online sampling detection method suitable for raw materials of high-purity optical fibers. The online sampling detection system comprises an infrared spectrograph, a control system, a sampling system, a gas purging system, a vacuum system, a tail gas system, a pressure detection system and a discharging system. The online sampling detection system has the beneficial effects that the direct butting of infrared detection equipment and production equipment is realized, and a detection result can timely and accurately present the quality level of products in a production process; the control level of the product quality in the production process is increased; the operation in a sampling process is accurately controlled by virtue of a DCS control system, so that the integration of sample preparation works and an infrared detection flow is realized, and the promptness and timeliness of the detection result are improved. Meanwhile, the online sampling detection system has the advantages of safety, reliability, flexibility in operation and wide application range, can be applied to infrared online detection of the raw materials of the high-purity optical fibers and also can be applied to final product detection of offline products.

Description

technical field [0001] The invention relates to an infrared spectrum online sampling detection system and detection method suitable for high-purity optical fiber raw materials, belonging to the technical field of spectrum detection and analysis. Background technique [0002] During the manufacturing process of the optical fiber, the absorption vibration of hydroxide ions caused by the hydrogen-containing impurities in the raw material causes the optical fiber to absorb energy at a specific 1383nm resonance frequency and cause attenuation, which becomes the main source of transmission consumption in the finished quartz-based optical fiber. source. Therefore fiber optic materials (including GeCl 4 、SiCl 4 , POCl 3 etc.) have extremely high requirements on the content of hydrogen-containing impurity compounds (OH, CH, HCl). [0003] Infrared spectroscopy is one of the effective methods for qualitative or quantitative analysis of compounds. In the infrared spectrum, the tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3577
CPCG01N21/3577
Inventor 莫杰武鑫萍袁琴王铁艳毛威刘顺凯纪淼赵强
Owner GRINM GUOJINGHUI NEW MATERIALS CO LTD
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