Prof. Dr. Dr. h. c. Joachim Ulrich :
Martin-Luther-Universitaet

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day1_1.pdf

Hiroshi TAKIYAMA :
Department of Chemical Engineering, Tokyo University of Agriculture and Technology (TUAT), Tokyo, Japan

Some polymorphs of good bioavailability may have morphology with poor handling characteristics. In such cases, crystalline particles cannot be produced with desired polymorphism and morphology simultaneously. In anti-solvent crystallization, the consideration of the solution addition methods to control polymorph and morphology is important engineering challenge. In this present study, the operation design and operating strategies to obtain crystalline particles with suitable handling characteristics of desired polymorph were investigated. By using proposed operation design based on the phase diagram, the required polymorph with certain crystal quality was successfully obtained. The proposed method by using solution composition trajectory is effective for controlling crystal quality.

day1_2.pdf

Heiko BRIESEN :
Process Systems Engineering, Technische Universitat Munchen, Freising, Germany

The size (or size distribution) of crystals is a pivotal quality criterion of a crystalline product. Not only the use of the crystal product is affected by size but also the size distribution is the central element of the modeling of crystallization processes. Consequently, size characterization (e.g. laser diffraction) and modeling approaches (e.g. population balance modeling) are well-established in academia and industry. The lack of characterization and modeling techniques to address crystal shape in a detailed manner has hindered the wide-spread consideration of this equally important crystal property. Only recently crystal shape engineering has come into focus. The presentation will provide an overview on recent experimental characterization method (e.g. computer tomography measurements) to represent shape and to model shape relevant behavior (e.g. molecular dynamics simulations).

day1_3.pdf

Toshimichi KAMEI :
Fermentation & Biotechnology Laboratories, Isolation & Purification Technology Laboratory, Ajinomoto Co. Inc.,

We explored the mutual incorporation tendency of branched chain amino acids (L-leucine, L-isoleucine, L-valine ) and isomorphic amino acids in cooling crystallization conducted in water. In most cases, a guest amino acid (an impurity amino acid) whose side chain is longer than that of a host amino acid (a purified amino acid) was incorporated easily in a host amino acid. In this case, a solid solution was formed, and the c-axis of a host crystal structure was extended. Also, the crystal growth was inhibited. From these results, a mutual incorporation model was proposed.

day1_4.pdf

Yoshiyuki Shirakawa :
Doshishya Univ.

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day1_5.pdf

Jun OSHITANI :
Division of Chemistry and Biotechnology, Graduate School of Natural Science and Technology, Okayama University, Japan

We designed and developed dry continuous separators using a gas-solid fluidized bed. It is well known that a gas-solid fluidized bed has liquid-like properties such as density and viscosity. When an object is placed onto the top of the fluidized bed, the object floats or sinks in the fluidized bed. The float-sink was applied to the dry separation. Continuous separators have been put to practical use for separation of waste plastics and waste nonferrous metals in Japan. Also, mineral processing for iron ore and coal was demonstrated to be feasible using the dry separator, and separation efficiency corresponding to that by the conventional wet separation was obtained by the dry separator.

day1_6.pdf

Peuker, U.A :
TU Bergakademie Freiberg, Freiberg, Germany

The presentation gives an overview on the possibilities to apply the different measuring modes of atomic force microscopy in particle technology. The characterization possibilities range from the evaluation of structural information e.g. in nano-composites to direct measurements of force distance curves in dry and wet media. An additional focus is on the detection of nano-bubles on smooth and as well rough surfaces and their effect on the interaction and processing properties. Since particle interactions also are a function of the chemical composition of the surfaces, AFM-measurement are applied to characterize the chemical surface properties, e.g. the adsorption of surfactants.

day1_7.pdf

Takuya Tsuji, Jumpei Fujimoto and Toshitsugu Tanaka :
Department of Mechanical Engineering, Osaka University, Suita, Japan

A DEM - CFD coupling model is proposed for particle-drying process in fluidized bed and validation study is performed. The model includes heat transfers through inter-particle, gas-particle, particle-wall and gas-wall. The drying of moist particle is modeled by assuming a double-layer structure inside of the particle. A number of bench-scale experiments using Silica-gel particle are performed and its drying behavior is observed. In addition to the moisture content change of particles, its temperature is also measured by using an infrared thermography camera and results are compared. Current status and future perspective of the model development are discussed in the presentation.

day1_8.pdf

Stefan Heinrich :
Hamburg University of Technology

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day1_9.pdf

(Japanese Exhibitor only) 

Japanese exhibitors are welcome to join the Japanese Reception at ACHEMA. Join the reception and enjoy intercommunication with other Japanese Exhibitors and ACHEMA organizer DECHEMA.

Date: June 16, 2015
Place: Hall 4.C Room Concorde
Fee: Free of charge