Neustadt an der Weinstraße, Germany
Neustadt an der Weinstraße, Germany

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Mocker M.,ATZ Entwicklungszentrum | Loh I.,ATZ Entwicklungszentrum | Stenzel F.,ATZ Entwicklungszentrum
Chemie-Ingenieur-Technik | Year: 2010

Recovery of raw materials is essential in our society because of the limited inventories of natural goods. Residues of firing systems also contain valuable raw materials. 32Mio.t of these residues were accrued per year in Germany up to now, which were mostly reused in construction industry. But the residues are not specific reused at this kind of recycling and the valuable contents are accepted at best. Special applications are phosphorus recycling, fertilizer production and metal recycling. Therefore special processes are necessary, like the ATZ process, which is generally suitable for recovery of phosphorus and metals. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.


Koglmeier M.,TU Munich | Faulstich M.,ATZ Entwicklungszentrum | Mocker M.,ATZ Entwicklungszentrum | Leipprand A.,Sachverstandigenrat fur Umweltfragen
Chemie-Ingenieur-Technik | Year: 2010

Besides the widely discussed limited fossil energy resources some metal and mineral resources are quite finite as well. Basically the resource and material efficiency can be increased at all steps of the supply chain. A systematic analysis identifies possibilities at the raw material exploitation, the base material production, the goods production, the products usage and the waste management. The last three mentioned levels of the supply chain offer the best potentials. Concrete measures to reduce the resource demand like optimized production processes, leasing models or urban mining require a harmonized, integrated policy as well as a changed consumer behaviour. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.


Pfeifer S.,ATZ Entwicklungszentrum | Franke M.,ATZ Entwicklungszentrum | Mocker M.,ATZ Entwicklungszentrum | Faulstich M.,ATZ Entwicklungszentrum
Wasser und Abfall | Year: 2012

With its high share of high-tech companies and high dependence on imports regarding many raw materials relevant to high-tech products, the business location in Germany is in a special way affected by the globally increasing shortage and price increase of raw materials. In view of this fact, the Hessian Ministry of Environment, Energy, Agriculture and Consumer Protection had commissioned a study for the development of initial approaches for a resource strategy tailored for the state of Hesse.


Meiller M.,ATZ Entwicklungszentrum | Binder S.,ATZ Entwicklungszentrum | Faulstich M.,TU Munich
Wasser und Abfall | Year: 2011

The consequences of climate change as well as the scarcity of primary fossil energy carriers compel a basic reorientation of the energy supply. In doing so, one of the biggest technical challenges is to reconcile the availability of energy from volatile sources with the need for energy of the consumers and thereby securing an economical and consumption-oriented allocation of power and heat. For this, energy storages technically enable the necessary time to decouple from generation and consumption. Hence, they are in the position to considerably improve the usability and system tolerance of renewable energies and to guarantee a complete changeover to 100% renewable energies in the long-run.


Neddemeyer T.,BAM Federal Institute of Materials Research and Testing | Mocker M.,ATZ Entwicklungszentrum | Faulstich M.,TU Munich
Materials and Corrosion | Year: 2011

In order to increase reliability and lifetime of heat exchangers in waste-to-energy plants corrosion resistant thermally sprayed coatings are applied in a higher extent. From the selection of a plant specific spray material and process via laboratory and field experiments up to a successful coating a high amount of time and money is necessary. In particular, experiments in corrosive surroundings at high temperature which are needed to optimize the coating quality are time-consuming. In order to decrease development times and to reduce costs, corrosion resistance of a thermally sprayed coating under high temperature conditions is compared with its behavior in an aqueous solution. If the high temperature corrosion resistance can be forecast by electrochemical tests, a fast, efficient and cheap possibility to improve the coating quality would be available and the efforts for tests in high temperature environments could be decreased. To accomplish this objective, Diamalloy 1005 was sprayed with the APS-process on a ferritic steel. Since the performance of thermally sprayed coatings is not only influenced by the coating material but also by the spraying parameters, three different spray parameter sets were used. After analyzing the results of the corrosion tests under high temperature conditions and in aqueous solution an identical assessment of the spray parameter-specific corrosion protection could be obtained. Ongoing field tests in a waste-to-energy plant are expected to prove the laboratory results. So, a first step in the development of a fast, efficient and cheap method to predict the high temperature corrosion resistance of a thermally sprayed coating might have been done. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Berghof-Hasselbacher E.,Dechema Institute | Masset P.J.,ATZ Entwicklungszentrum | Zhang L.,TU Bergakademie Freiberg | Liu L.,Central South University | And 4 more authors.
Praktische Metallographie/Practical Metallography | Year: 2012

Alloying with rare earth metals improves to the mechanical properties and corrosion resistance of aluminium base alloys at high temperatures. The rare earth metal erbium may be used for grain refinement Within a project of computer-aided alloy development based on the CALPHAD (CALculation of PHAse Diagrams) method various alloys were melted on the Al-rich side of the ternary system Al-Cu-Er under argon atmosphere and their microstructures were characterized in the as-cast state or after long-term isothermal annealing (400°C/960h) by means of different investigation techniques As a result, the phases fee (Al), τ 1-Al 8Cu 4Er, θ-CuAl 2, ηCuAl, and AI 3Er were identified, their compositions and fractions were quantified, and their hardnesses were determined. The experimental obtained microstructures agree very well with the calculated solidification behaviors of the cast alloys. The knowledge gained from this work about the phase compositions and micro- structures can also be utilized for the fine optimization of the phase diagram. © Carl Hanser Verlag München.

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