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Device for testing residence time distribution (RTD) of material

A residence time and distribution testing technology, applied in measuring devices, material excitation analysis, material analysis through optical means, etc., can solve problems such as melting of adhesives, inconvenient use, fiber detachment, etc., to reduce coupling loss and cost, Compact optical path layout, convenient isolation effect

Inactive Publication Date: 2012-02-22
HANGZHOU EVERFINE PHOTO E INFO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The excitation light beam described in this patent is coupled into the optical fiber through a coupler, the coupling efficiency is low, and the energy consumption is large. In addition, since the optical fiber probe is bonded together by a certain substance and the optical fiber, when the barrel temperature When it is high, it is easy to cause the adhesive to melt and make the probe and optical fiber detach
Moreover, the optical fiber is a fragile device, which is very inconvenient to use

Method used

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  • Device for testing residence time distribution (RTD) of material
  • Device for testing residence time distribution (RTD) of material
  • Device for testing residence time distribution (RTD) of material

Examples

Experimental program
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Effect test

Embodiment 1

[0022] like figure 1 As shown, the material residence time distribution test device includes an excitation light source 1, a light tube 2, a half mirror 3, a heat insulation layer 4, an optical window 5, a fluorescence detector 6, a signal processing unit 7, a power supply unit 8, Excitation light source filter 9 , light source lens 11 , fluorescence filter 12 and fluorescence lens 13 . The excitation light source 1 described in this embodiment is a light-emitting diode, and the light-transmitting cylinder 2 is a stainless steel cylinder that is opaque and resistant to high temperature. The power supply unit 8 is a constant current power supply, which provides driving for the light-emitting diodes, so that the light-emitting diodes emit stable excitation light beams. A light source detector 10 is provided at the excitation light source 1 to monitor the stability of the excitation light source 1 and compensate the measurement results according to the fluctuation of the excitat...

Embodiment 2

[0025] like figure 2 As shown, the material residence time distribution test device includes an excitation light source 1, a light tube 2, a half mirror 3, a heat insulation layer 4, an optical window 5, a fluorescence detector 6, a signal processing unit 7, a power supply unit 8, Light source lens 11 and fluorescent lens 13. The excitation light source 1 described in this embodiment is a light-emitting diode, and the light-transmitting cylinder 2 is a stainless steel cylinder that is opaque and resistant to high temperature. The power supply unit 8 is a constant current power supply, which provides driving for the light-emitting diodes, so that the light-emitting diodes emit stable excitation light beams. The excitation light beam passes through the light tube 2, passes through the light source lens 11, the half-mirror 3 and the optical window 5 in sequence to reach the material to be measured. The tracer in the material to be tested emits fluorescence of a certain band af...

Embodiment 3

[0028] like image 3As shown, the material residence time distribution test device includes an excitation light source 1, a light tube 2, a half mirror 3, a heat insulation layer 4, an optical window 5, a fluorescence detector 6, a signal processing unit 7, a power supply unit 8, Excitation light source filter 9 , light source lens 11 , fluorescence filter 12 and fluorescence lens 13 . The excitation light source 1 described in this embodiment is a light-emitting diode, and the light-transmitting cylinder 2 is a stainless steel cylinder that is opaque and resistant to high temperature. The power supply unit 8 is a constant current power supply, which provides driving for the light-emitting diodes, so that the light-emitting diodes emit stable excitation light beams. A light source detector 10 is provided at the excitation light source 1 to monitor the stability of the excitation light source 1 and compensate the measurement results according to the fluctuation of the excitati...

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Abstract

The invention discloses a device for testing residence time distribution (RTD) of a material. The device comprises a lighting tube, an optical window, a fluorescence detector, a signal processing unit, an excitation light source, a transflective mirror, a light source power supply unit and the like, wherein the beam emitted from the excitation light source strikes a detected material after passing through the transflective mirror; a tracer in the detected material is excited to emit fluorescence which is transmitted to the fluorescence detector after passing through the transflective mirror; and through the analysis of the signal processing unit, the RTD of the material is calculated. The device for testing the RTD of the material has the advantages of capability of greatly reducing coupling loss and cost because the excitation beam and the fluorescence do not need coupling to an optical fiber in the emitting process, compact light path arrangement, small volume, very convenient use by only being electrically connected with the signal processing unit and the light source power supply unit and capability of conveniently isolating the detected material from the high-temperature and high-pressure environment.

Description

【Technical field】 [0001] The invention relates to a test device, in particular to a material residence time distribution test device. 【Background technique】 [0002] Residence time distribution (RTD) is an important parameter to characterize materials during reaction, mixing or extrusion. The residence time refers to the time that the material stays in the equipment due to uneven flow rate distribution or back-mixing or non-flowing "dead zone" in the equipment through a continuously operating separation equipment or reaction equipment. The material with different residence time is expressed as the share of the total material quantity, which is the residence time distribution of the material. It is an important indicator to measure the performance of the equipment. [0003] The currently widely used method for measuring the residence time distribution is the stimulus response technique. Stimulus-response technology injects a tracer into the system and then measures the tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64G01N21/01
Inventor 潘建根
Owner HANGZHOU EVERFINE PHOTO E INFO
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