A method for on-line analysis of methyl chlorosilane by using an online Raman spectrometer to establish a model

A technology of Raman spectrometer and methyl chlorosilane, which is applied in the direction of analyzing materials, analyzing materials through chemical reactions, and instruments, and can solve the problems of lack of detection means, instrument stability and speed that cannot meet the needs of devices, and device materials. To solve problems such as ambiguous direction, achieve fast analysis speed, high reliability of results, and improve the stability of the device

Active Publication Date: 2017-01-04
JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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Problems solved by technology

At present, the instrument for multi-component online analysis of the device is mainly a gas chromatograph, but the stability and speed of this instrument have not been able to meet the needs of the device, especially for process measurement.
At the same time, due to the lack of detection methods in the past, the orientation of the materials in the device is not clear

Method used

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  • A method for on-line analysis of methyl chlorosilane by using an online Raman spectrometer to establish a model

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Embodiment 1

[0038] A kind of method that adopts online Raman spectrometer to set up a model to analyze methyl chlorosilane online, comprises the following steps:

[0039] 1. Laboratory sample collection:

[0040] The variation range of each composition of the collected samples should be able to cover the actual variation range of the sample to be tested;

[0041] 2. The content of each component in the sample is determined by gas chromatography, and the theoretical value of the model sample is established:

[0042] 2.1 Gas chromatography condition parameters:

[0043] Oven temperature: initial column temperature 50°C, heating rate 5°C / min, final temperature 280°C; vaporization chamber temperature: 250°C; detector temperature: 280°C;

[0044] 2.2 Calculate according to the peak area of ​​the chromatographic peak to obtain the content of each component:

[0045] The calculation formula is: T i =(A i ×100) / ∑A n

[0046] Among them: T i : the percentage content of component i; A i ...

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Abstract

The invention discloses a method for on-line analysis of methyl chlorosilane by using an online Raman spectrometer to establish a model. The Raman spectrogram of the sample is combined with the analysis data obtained by gas chromatography, and statistical methods are used to calculate and obtain each group of The distribution curve of each component was established, and the Raman spectrum model of each component was established. After the online Raman spectrometer scans the sample, the Raman spectroscopic model is used to predict the sample components, and the results and time series curves are output, realizing the real-time monitoring of the changes of various components in methylchlorosilane by the online Raman spectrometer. The method has the advantages of no sampling, no damage to samples, simple operation, rapid analysis, and no environmental pollution.

Description

technical field [0001] The invention relates to an online analysis of methylchlorosilane by using an online Raman spectrometer to establish a model, and belongs to the technical field of petrochemical industry. Background technique [0002] According to different production stages, silicone products can be roughly divided into silicone monomers, intermediate monomers, primary polymers, and silicone products (silicone oil, silicone rubber, silicone resin, etc.). However, methylchlorosilane is the foundation of the organosilicon industry. It is synthesized with methyl chloride and silicon as raw materials and copper as a catalyst. The content of dimethyldichlorosilane in the mixed product of methylchlorosilane not only reflects the The level of synthesis technology also affects the production cost of octamethylcyclotetrasiloxane and methyl mixed cyclosiloxane, the main raw materials of silicone downstream products, and the competitiveness of silicone monomer production plants....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76G01N30/02G01N35/00
Inventor 刘根兰方平程顺弟邓庆贤刘雪梅潘云霞姚石泉
Owner JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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