Ifu Hamburg GmbH

Hamburg, Germany

Ifu Hamburg GmbH

Hamburg, Germany

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Eissen M.,Emden Leer University of Applied Sciences | Brinkmann T.,Ifu Hamburg GmbH | Klein M.,Ifu Hamburg GmbH | Schwartze B.,Schwartze Id.vt | Weiss M.,Friedrich - Alexander - University, Erlangen - Nuremberg
Chemie-Ingenieur-Technik | Year: 2011

It is reasonable to use methods from the environment, health and safety management as well as from life cycle assessment already in early stages of process development. Against the background of poor data availability and data quality applications of metrics in early stages of process development are presented for two case studies. A comparative assessment of two alternative synthesis routes to the production of an enantiomerically pure β-amino acid has been realized. In addition to the analysis of the mass flows, material costs and different health assessment methods were explored. Using the example of the glutaraldehyde production it is demonstrated how the cumulated energy demand can be calculated with software tools in early stages of process development. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Joschko P.,University of Hamburg | Schmitz C.,University of Hamburg | Page B.,University of Hamburg | Denz N.,Ifu Hamburg GmbH
Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010 | Year: 2010

The European Emission Trading System (ETS) has been elaborated as a market-based instrument for controlling greenhouse gas emissions. Selected sectors have to bring in Emission Allowances (EUA) for every emitted ton of CO2. A large part of EUAs is freely allocated to plant operators, but high emitters have to settle their lack of EUAs by buying EUAs from those with a surplus of allowances. Operators have to fulfil several tasks in time: Creating monitoring concepts, collecting initial data, participating in the allocation process, emission reporting, trading of EUAs, and refunding of used EUAs to national authorities. In this paper, we present the increments of our project "Emission Trade Assistant", which is funded by the German Federal Ministry of Education and Research. We present our draft of an assistant software built from distinct software components and sum up our experiences in modelling workflows of plant operators based on Windows Workflow Foundation and .NET 4.0. Our approach is promising to ease the duties of the facility operators, but it also raises high demands on an easy-to-use and highly dynamic workflow modelling framework. We summarize our discussions with operators, national authorities and accredited experts, before we provide requirements for this modelling framework. We will demonstrate that workflow-based assistants are highly suitable to support operators with certain tasks, to mediate between operators and various obligatory IT systems, and to take operators by the hand and guide them step-by-step through the ETS.


Grundemann L.,TU Braunschweig | Kuschnerow J.C.,TU Braunschweig | Brinkmann T.,Ifu Hamburg GmbH | Scholl S.,TU Braunschweig
Glocalized Solutions for Sustainability in Manufacturing - Proceedings of the 18th CIRP International Conference on Life Cycle Engineering | Year: 2011

During the conceptual design phase the performance of a chemical process is fixed by defining the sequence of unit operations and choosing suitable equipment. A tool box supports a consistent data management and a quantitative assessment of process alternatives. From the viewpoint of sustainable development, the integration of ecological and social assessment methods remains fragmental whereas economic methods are fully developed. In this case study, three ecological assessment methods have been applied in order to explore their applicability within the conceptual design phase. Conclusions are drawn concerning the methods' usability, transferability and integration into the early process development stages.


Viere T.,Lüneburg University | Brunner H.,Wacker Chemie AG | Hedemann J.,Ifu Hamburg GmbH
Chemical Engineering and Technology | Year: 2010

Strategic analysis and optimization of highly integrated production networks is an essential requirement for cost-effective and resource-efficient production. This paper presents a comprehensive software-based concept for modeling, simulation, optimization, and visualization of an integrated silicone production network of Wacker Chemie AG. A Verbund-Model was implemented in a step-by-step approach, starting with primary material streams in one business unit up to the modeling of all energy, waste, and cost streams in several business units. The system's flexibility enables different levels of detail for modeling processes and parts of the network: from simple input-output relations to complex, nonlinear equations and specifications. The proactive implementation of technical measures and projects based on the assessment of future scenarios is an important outcome of the Verbund-simulation. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Viere T.,Ifu Hamburg GmbH | Viere T.,Lüneburg University | Brunner H.,Wacker Chemie AG | Hedemann J.,Ifu Hamburg GmbH
Chemie-Ingenieur-Technik | Year: 2011

Strategic analysis and optimization of highly integrated production networks is an essential requirement for cost-effective and resource-efficient production. A comprehensive software-based concept for modelling, simulation, optimization, and visualization of an integrated silicone production network is presented. A Verbund model was implemented starting with primary material streams in one business unit up to the modelling of all energy, waste, and cost streams in several business units. The system's flexibility enables different levels of detail for modelling processes and parts of the network. The proactive implementation of technical measures and projects based on the assessment of future scenarios is an important outcome of the Verbund simulation. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Eissen M.,Secondary School Ganderkesee | Eissen M.,Emden Leer University of Applied Sciences | Weiss M.,Friedrich - Alexander - University, Erlangen - Nuremberg | Brinkmann T.,ifu Hamburg GmbH | Steinigeweg S.,Emden Leer University of Applied Sciences
Chemical Engineering and Technology | Year: 2010

Enantiomerically pure β-amino acids are key building blocks for the synthesis of pharmaceuticals. Special consideration will be given to the production of (S)-3- aminobutanoic acid. Mass balancing is encouraged and highlighted to support the decision-making process in early stages of synthesis design when alternative routes are available. Though the overall yield of a chemical approach is twice as good as a chemoenzymatic route, the latter is more convincing regarding raw material consumption and costs as well as health issues. The energy flow analysis in early process development could not yet be carried out but principles concerning the modeling of energy demand were briefly exemplified by a comparative study of two processes with respect to decanoic acid methyl ester. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Brinkmann T.,ifu Hamburg GmbH | Rubbeling H.,ifu Hamburg GmbH | Frohlich P.,TU Bergakademie Freiberg | Katzberg M.,TU Bergakademie Freiberg | Bertau M.,TU Bergakademie Freiberg
Chemical Engineering and Technology | Year: 2010

Biotechnical technologies are often viewed as generally green processes, since they operate at low temperatures and pressures. However, as shown by various comparative studies of chemical and biotechnical engineering processes, this view cannot be generalized. It is clear that sustainable assessment should be carried out in the early stages of process development, since these stages have a major influence on the economic and ecological performance of processes later at the industrial scale. One option to use as a basis for evaluating the potential advantages to developing a biotechnical process can be a material and energy flow analysis (MEFA) at an early stage. This article provides an understanding of MEFA in general and illustrates its successful application by means of two case studies. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Weiss M.,Friedrich - Alexander - University, Erlangen - Nuremberg | Brinkmann T.,Ifu GmbH Hamburg | Groger H.,Friedrich - Alexander - University, Erlangen - Nuremberg
Green Chemistry | Year: 2010

An improved, greener process for the enantioselective chemoenzymatic synthesis of (S)-3-aminobutanoic acid has been developed. Reaction steps comprise an initial aza-Michael addition starting from cheap prochiral compounds, subsequent enzymatic resolution via aminolysis using commercially available Candida antarctica lipase B in a solvent-free one-pot process, hydrolysis of the resulting ester and removal of the N-benzyl moiety via hydrogenation. After isolation, the desired (S)-3-aminobutanoic acid was obtained in an overall yield of 28% and with an excellent enantiomeric excess of 99% ee. Notably, this reaction sequence does not require column chromatography with organic solvents and only one purification step of an intermediate is needed. The environmental impact of this optimized process has been evaluated and an E-factor of 41 has been calculated for the overall process. A comparative assessment with the previous process was done via mass balancing using the E-factor, the selectivity index S-1 as well as an SHE assessment. © 2010 The Royal Society of Chemistry.


Zschieschang E.,Pforzheim University | Denz N.,Ifu Hamburg GmbH | Lambrecht H.,Pforzheim University | Viere T.,Pforzheim University
Procedia CIRP | Year: 2014

Material flow networks of chemical processes and production systems provide valuable information on energy and material consumption, related costs and environmental impacts including life cycle aspects. Such holistic information facilitates changes towards more sustainable and resource-efficient process design and production system planning. These changes require detailed information on cause-effect relationships between process design parameters, economic performance, and environmental impacts. This paper presents how chemical process design models can be integrated in material flow networks to obtain information on crucial design parameters from a resource efficiency perspective. Furthermore, the use of optimization methods in this complex decision setting is demonstrated based on newly developed software prototypes and plug-ins. © 2014 Published by Elsevier B.V.


Friedrich S.,Lausitz University of Applied science | Grobe G.,Lausitz University of Applied science | Kluge M.,TU Dresden | Brinkmann T.,Ifu Hamburg GmbH | And 2 more authors.
Journal of Molecular Catalysis B: Enzymatic | Year: 2014

Ecological assessment using the software tool Sabento was conducted to compare different processes to gain the fine chemical (R)-1-phenylethanol from ethylbenzene. The software was applied during the biocatalytic process development using the unspecific peroxygenase (EC 1.11.2.1) of the fungus Agrocybe aegerita. The process could be systematically improved with respect to the ecological performance during process development. Compared to a modern chemical process and a further biotechnological process, it now reaches the best environmental key indicator. The software tool Sabento proved to be well suited to work out the most important factors determining the ecological burdens in the early stages of process development. © 2013 Elsevier B.V.

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