New micro-channel chemical reactor controlled by computer

the author
Schaefer Mechtilde shttped.co.
ukenGermany
University of Applied SciencesWildau Department for Engineering and Industrial
Engineering Bahnhofstrase 15D-15745 Wildau GermanyTranslation: OnkelThis article focuses on a new type of microreactor, Continuous monitoring of chemical reactions through the Raman spectrumThis monitoringprovides accurate feedback to the computer-controlled micro-gear pump steering parameters to obtain the ideal dischargeflow of both liquids, resulting in the optimal composition ratio at the best total flowmicroreactors are a core part of the designDue to its easy-to-remove advantage, the component can bereplaced at any time to accommodate different chemical reaction requirementsa microreactor type substrate made of stainless steel, which contains grinding microchannels and is covered with Pyrex heat-resistant glassa noade Another microreactor type substrate is made of etching silicon with anisotropy, covered pyrex heat-resistant glass with anode bonding through a miniature glass channel, we use an optical microscope to visually observe the initial phase interface of the two exsomotos in the reaction channel In contrast to infrared spectroscopy, this approach does not affect the detection of reaction dynamics signals by the Raman spectrum on the basis of the test reaction, we propose the insititable analysis of non-
intrusive and spatial high-resolution reactions measured along the reaction channel at different locations using the Raman spectroscopy method 1 Introduction
This paper produces a micro-chemical reaction device with glass channel, using optical technology (e.g Raman spectroscopy) continuously the internal reaction of the monitoring system The information collected can be fed back in real time to optimize various chemical reactions microreactors will be a major new contribution in the field of research 2 Results and discussion
the overall presentation of the microreactor shows in Figure 1, the core of the microreactor that occurs a chemical reaction is composed of finely ground Invar without rusted steel or wet etched silicon Because the core components are easy to replace, they can perform a variety of chemical reactions All core components are covered with anode-bonded heat-resistant glass for optical observation and spectral examination of the occurrence of chemical reactions The total size of the core components of the reactor is 20x20mm
2 , and the fluid channel sizes are as follows: stainless steel core: 200-400
m width ; Silicon core: width of 50-100 m ; The total length of the fluid pipe is determined by the substrate type, the above size, and other integrated components, the length range is between 5cm and 50cm: the entire microreactor system requires two external computers to control the micro-gear pump (micro-gear pump brand:
nikrosysteme Gmb day), ensuring that the mixing ratio of the two expetors and the average stay time of the chemical components in the reactor core are optimal on the Pyrex glass cover of Perjex, a spectral study can be carried out along the core length of the reactor, such as the width of the entire fluid channel, or even chemical imaging of the entire reactor core, resulting in a chemical reaction At a constant flow rate, each data point along the length of the fluid channel represents the specific reaction time of the chemical reaction By examining each data point at any time, the order and timing of chemical reactions can be tracked with a high time resolution and a minimum signal-to-noise ratio the current ideal spectral analysis method is the Raman spectroscopy, because the Raman signal is not absorbed or affected by the glass lid
the select Sal-Knorr synthesis as a test chemical reaction, using acetone and ethanolamine exols, using acetone and ethanolamine exols, which are produced as substitutes for abiphoto The Raman spectrum of the mixture of the exsotograph and the product is shown in Figure 3 3 Conclusion
This paper introduces a microchannel chemical reactioner with glass channel, which covers the whole fluid channel system This design allows continuous monitoring of chemical reactions through optical spectroscopy techniques such as Raman spectroscopy In addition, the order of tracking chemical reactions can be obtained by obtaining data points along the microflow control tube The spectral information is used for the computer-controlled counter
feed of the steering parameters of the microgear pump references