Liquid near-infrared transmitted spectrum component online detection apparatus
A technology of transmission spectroscopy and detection devices, applied in the field of online analysis of near-infrared spectroscopy, can solve the problems of difficult control of gasification sample sampling component uniformity, cumbersome operation, inaccurate analysis results, etc., and achieve the effect of universal and convenient use
Inactive Publication Date: 2015-11-18
BEIJING UNIV OF CHEM TECH
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Problems solved by technology
[0003] At present, there are gas chromatography, Fourier infrared spectroscopy, etc. for the detection of liquid material components in petrochemical products. Gas chromatography is difficult to control the uniformity of gasification sample sampling components. Fourier infrared spectroscopy can achieve rapid analysis, but the operation is cumbersome and only It is limited to laboratory use; the existing near-infrared online detection device needs to set up an independent detection pipeline system when analyzing the components of the liquid to be tested with high pressure, the operating system is complicated, and for the liquid to be tested with a low boiling point, its density is affected by temperature and pressure , making the analysis results inaccurate
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[0020] Now according to the attached Figures 1 to 4 The present invention is described in detail, such as figure 1 As shown, the on-line detection device for liquid near-infrared transmission spectrum components provided by the present invention includes a light source module (1), a pressure-bearing flow cell module (2) and a detector module (3).
[0021] Specifically, a near-infrared light source (4) is provided in the light source module (1), one end of the pressure-bearing flow cell module (2) is connected to the light source module (1), and one end of the pressure-bearing flow cell module (2) is provided with a second A light concentrating part (11), the other end of the pressurized flow cell module (2) is provided with a second light concentrating part (12), and the first light concentrating part (11) and the second light concentrating part (12) are arranged There are a first window (21) and a second window (22), and between the first window (21) and the second window (...
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Abstract
The invention relates to a liquid near-infrared transmitted spectrum component online detection apparatus. According to the apparatus, near-infrared light emitted by a near-infrared light source can sequentially penetrates through a first condensation member, a first window sheet, a liquid to be detected, a second window sheet and a second condensation member, the transmitted light penetrating through the second condensation member is conveyed into a detector module, and the detector module analyzes to generate the component information so as to ensure the achievement of the product detection function; and on the basis, a pressure-bearing circulating pool module is set based on the pressure container standard so as to provide the pressure bearing capacity. According to the present invention, the limitations that the detection process of the existing detection apparatus can be only performed in the laboratory and the separate detection pipeline system is required to be arranged when the components of the high pressure liquid to be detected is analyzed are overcome, such that the product use is universal and convenient.
Description
technical field [0001] The invention relates to the technical field of on-line analysis of near-infrared spectroscopy, in particular to an on-line detection device for liquid near-infrared transmission spectrum components. Background technique [0002] The liquid near-infrared transmission spectrum composition on-line detection device is a device that transmits liquid materials to perform on-line composition analysis. [0003] At present, there are gas chromatography, Fourier infrared spectroscopy, etc. for the detection of liquid material components in petrochemical products. Gas chromatography is difficult to control the uniformity of gasification sample sampling components. Fourier infrared spectroscopy can achieve rapid analysis, but the operation is cumbersome and only It is limited to laboratory use; the existing near-infrared online detection device needs to set up an independent detection pipeline system when analyzing the components of the liquid to be tested with h...
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IPC IPC(8): G01N21/359
Inventor 李双喜薛才红张秋翔蔡纪宁翟斌
Owner BEIJING UNIV OF CHEM TECH
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