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Crailsheim, Germany

Heidenreich S.,Pall Filtersystems GmbH
Filtration and Separation | Year: 2011

New tubular ceramic membranes have been developed that provide a high packing density of the filtration area. These new ceramic membrane filter elements have been proven in case studies in oily wastewater treatment applications. Steffen Heidenreich and Winfried Michell of Pall Filtersystems GmbH describe the findings. © 2011 Elsevier Ltd. Source


Heidenreich S.,Pall Filtersystems GmbH
Chemie-Ingenieur-Technik | Year: 2012

Even if already numerous hot gas filter systems are installed, hot gas filtration with all its aspects is still not known enough. Hot gas filtration offers significant advantages in many cases. Processes can be simplified or intensified, process efficiency can be increased, contamination of products or blocking by condensation or desublimation can be prevented, and downstream equipment can be protected. The paper describes the fundamental particularities of filtration at higher temperatures and provides an overview of filter media and filter systems for hot gas filtration. Moreover, applications of hot gas filtration are presented. © 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Heidenreich S.,Pall Filtersystems GmbH
Fuel | Year: 2013

This paper provides a detailed survey on hot gas filtration. Fundamental aspects of filtration at higher temperatures are described first, including the influence of the temperature on dust properties and filtration behaviour. The main focus is on the review of hot gas filter media as well as hot gas filter systems. Moreover, applications of hot gas filtration are presented and discussed in detail, for example advanced coal gasification as well as biomass gasification and pyrolysis, incineration of low-level contaminated radioactive waste from nuclear power generation, waste incineration, fluid catalytic cracking in oil refineries and other processes. By using hot gas filters, downstream equipment, such as heat exchangers, catalyst units, turbines and scrubbers, are protected from erosion and fouling, processes can be intensified or simplified as well as blocking by condensation or desublimation can be prevented. Energy efficiency, process intensification, PM 10 and PM 2.5 emission values, water shortage and water quality as well as overall process costs are topics which raise an increasing interest in hot gas filtration. © 2010 Elsevier Ltd. All rights reserved. Source


Heidenreich S.,Pall Filtersystems GmbH | Foscolo P.U.,University of LAquila
Progress in Energy and Combustion Science | Year: 2015

Gasification is considered as a key technology for the use of biomass. In order to promote this technology in the future, advanced, cost-effective, and highly efficient gasification processes and systems are required. This paper provides a detailed review on new concepts in biomass gasification. Concepts for process integration and combination aim to enable higher process efficiencies, better gas quality and purity, and lower investment costs. The recently developed UNIQUE gasifier which integrates gasification, gas cleaning and conditioning in one reactor unit is an example for a promising process integration. Other interesting concepts combine pyrolysis and gasification or gasification and combustion in single controlled stages. An approach to improve the economic viability and sustainability of the utilization of biomass via gasification is the combined production of more than one product. Polygeneration strategies for the production of multiple energy products from biomass gasification syngas offer high efficiency and flexibility. © 2014 Elsevier Ltd. All rights reserved. Source


Rapagna S.,University of Teramo | D'orazio A.,Interuniversity Research Center for Sustainable Development | Gallucci K.,University of LAquila | Foscolo P.U.,Interuniversity Research Center for Sustainable Development | And 2 more authors.
Chemical Engineering Transactions | Year: 2014

Biomass gasification trials have been performed by using a fluidized bed made of used and fresh olivine particles, and Catalytic and Non-Catalytic filters of new type, placed in the freeboard of the gasifier. All tests were performed continuously at temperature of 800 °C in presence of steam. The optimum result has been obtained with the simultaneous presence into the gasifier of the used olivine particles and the Catalytic filter. When the Non-Catalytic filter is placed into the gasifier, in presence of used olivine as a bed inventory, the H2 yield increases steadily during the four hours of gasification time, whereas in presence of Catalytic filter the yield of H2 reaches the steady state value after only one hour of gasification time. The presence of a layer of char particles on the candle surface has a positive effect on tar, methane and ammonia conversion. The use of Filters inside the gasifier permits to improve the contact between the char particles and the mixture of gas and vapours produced during the biomass devolatilization process, as a result a cleaner gas is obtained, making this technological solution particularly attractive. Copyright © 2014,AIDIC Servizi S.r.l. Source

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