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Theoretical/Experimental work

Selective hydrogenation of fatty substances in microcapillary reactor

Course of Study: CIW / BIW

Description

In the course of the shortage of fossil resources as input materials in the chemical industry, fats and oils, among others, are gaining in importance. In order to selectively carry out subsequent chemistry on a double bond in the fat chain, it is essential to hydrogenate naturally occurring mixtures of fats with different compositions with respect to the number of double bonds, whereby only one double bond should remain (Fig. 1). This can be achieved with a novel catalyst present in a second liquid phase. In this work, the reaction will be transferred to a continuous mode and this will be compared with batch experiments. For this purpose, an existing capillary reactor is used to minimize mass and energy transport limitations. The resulting three-phase system (Fig. 2) poses special challenges, so influences of e.g. phase ratios and solvents on the flow pattern will be investigated.
Subsequently, operation over a longer period of time shall be enabled.

Tasks

  • Adaptation of the apparatus setup
  • Investigation of the flow behavior
  • Determination of the optimal reaction system
  • Carrying out reactions in the capillary reactor
  • Long-term behavior and first recycling investigation
  • Comparison with batch experiments
  • Evaluation of reaction performance by means of
  • GC-FID, ICP-OES and TEM

Start

As of now!

Contact

M. Sc. Florian Lehmann
Room G1-512
florian.lehmanntu-dortmundde
+49 231 / 755-2316

M. Sc. Niclas von Vietinghoff-Scheel
Room G1-511
niclas.vonvietinghofftu-dortmundde
+49 231 / 755-3417

You can also find this notice in German at Moodle under https://moodle.tu-dortmund.de/course/view.php?id=10754.

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Fig. 1: Reaction scheme
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Fig. 2: Schematic of the flow in the capillary

Location & approach

The campus of TU Dort­mund University is located close to interstate junction Dort­mund West, where the Sauerlandlinie A 45 (Frankfurt-Dort­mund) crosses the Ruhrschnellweg B 1 / A 40. The best interstate exit to take from A 45 is “Dort­mund-Eichlinghofen” (closer to South Campus), and from B 1 / A 40 “Dort­mund-Dorstfeld” (closer to North Campus). Signs for the uni­ver­si­ty are located at both exits. Also, there is a new exit before you pass over the B 1-bridge leading into Dort­mund.

To get from North Campus to South Campus by car, there is the connection via Vogelpothsweg/Baroper Straße. We recommend you leave your car on one of the parking lots at North Campus and use the H-Bahn (suspended monorail system), which conveniently connects the two campuses.

TU Dort­mund University has its own train station (“Dort­mund Uni­ver­si­tät”). From there, suburban trains (S-Bahn) leave for Dort­mund main station (“Dort­mund Hauptbahnhof”) and Düsseldorf main station via the “Düsseldorf Airport Train Station” (take S-Bahn number 1, which leaves every 20 or 30 minutes). The uni­ver­si­ty is easily reached from Bochum, Essen, Mülheim an der Ruhr and Duisburg.

You can also take the bus or subway train from Dort­mund city to the uni­ver­si­ty: From Dort­mund main station, you can take any train bound for the Station “Stadtgarten”, usually lines U41, U45, U 47 and U49. At “Stadtgarten” you switch trains and get on line U42 towards “Hombruch”. Look out for the Station “An der Palmweide”. From the bus stop just across the road, busses bound for TU Dort­mund University leave every ten minutes (445, 447 and 462). Another option is to take the subway routes U41, U45, U47 and U49 from Dort­mund main station to the stop “Dort­mund Kampstraße”. From there, take U43 or U44 to the stop “Dort­mund Wittener Straße”. Switch to bus line 447 and get off at “Dort­mund Uni­ver­si­tät S”.

The AirportExpress is a fast and convenient means of transport from Dortmund Airport (DTM) to Dortmund Central Station, taking you there in little more than 20 minutes. From Dortmund Central Station, you can continue to the university campus by interurban railway (S-Bahn). A larger range of international flight connections is offered at Düsseldorf Airport (DUS), which is about 60 kilometres away and can be directly reached by S-Bahn from the university station.

The H-Bahn is one of the hallmarks of TU Dort­mund University. There are two stations on North Campus. One (“Dort­mund Uni­ver­si­tät S”) is directly located at the suburban train stop, which connects the uni­ver­si­ty directly with the city of Dort­mund and the rest of the Ruhr Area. Also from this station, there are connections to the “Technologiepark” and (via South Campus) Eichlinghofen. The other station is located at the dining hall at North Campus and offers a direct connection to South Campus every five minutes.

The facilities of TU Dortmund University are spread over two campuses, the larger Campus North and the smaller Campus South. Additionally, some areas of the university are located in the adjacent “Technologiepark”.

Site Map of TU Dortmund University (Second Page in English).