Results 211 to 220 of about 7,224 (264)

Testing ceramic filter elements

Chemical and Petroleum Engineering, 2010
It is shown that for cleaning hot (above 350°C) gases from highly disperse dust (carbon black) to low residual concentrations of it (not more than 1 mg/m3), it is advisable to use heat-resistant ceramic filter elements in which aluminosilicate fibers are used as filler and a mixture of organic and inorganic substances as binder.
N. V. Kabanov, V. S. Koryagin
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Microwave ceramics for resonators and filters

Current Opinion in Solid State and Materials Science, 1996
Abstract High-permittivity ceramics make it possible to noticeably miniaturize passive microwave devices. These ceramics must fulfil the requirements of high permittivity, very low dielectric losses and an extremely low temperature dependence of permittivity to yield temperature-stable resonators.
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Ceramic honeycomb filters and catalysts

Current Opinion in Solid State and Materials Science, 1997
Abstract Ceramic honeycombs are widely used as catalyst supports and as particulate filters for vehicular emission control. New geometries and materials have been developed for both mobile and stationary applications. Some recent examples are zeolite and carbon honeycomb adsorbers, low expansion heat exchangers, membrane-coated gas filters and finned
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Regeneration of Rigid Ceramic Filters

1993
The important issues to be addressed in specification and operation of ceramic filters at high temperatures are the long term conditioning behaviour and the filter “cleanability.”. These two aspects of filtration behaviour are inextricably linked and, at the present state of knowledge, very much system-specific, so that experimental work using the dust
D. Koch, K. Schulz, J. P. K. Seville, R. Clift   +3 more
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Ceramic-filter behavior in gasification

Bioresource Technology, 1993
Abstract Enviropower Inc., a joint venture of Tampella Power Inc. and Vattenfall Engineering AB, is developing a new process for power generation based on the integrated gasification combined cycle (IGCC). This IGCC concept incorporates the pressurized fluidized-bed gasification of different solid fuels (the U-Gas process), applying air-blown ...
Arto Lehtovaara, Wahab Mojtahedi
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Rigid ceramic filters

1997
The word ‘filtration’ refers to separation of particles from a fluid by passage through some form of porous medium. A distinction can be drawn between two main types of filtration behaviour: ‘depth’ filtration and ‘surface’ (or ‘barrier’ or ‘cake’) filtration (Figure 6.1).
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Ceramic Diesel Particulate Filters

International Journal of Applied Ceramic Technology, 2005
Twenty‐five years of diesel particulate filter (DPF) developments have shown that ceramic materials are well‐suited candidates to fulfill the harsh requirements of exhaust after treatment. The introduction of DPF in passenger cars in Europe in 2000 was a real breakthrough from both a scientific and a commercial point of view.
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Ceramic Filter

2023
Zhou Xinglong, Liu Dan, Xu Kuangdi
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Piezoelectric ceramic transformers and filters

Journal of the British Institution of Radio Engineers, 1961
The development of improved piezoelectric ceramics has enabled these materials to be used in the design of electronic components. Two new devices are described embodying piezoelectric principles of operation and relying on electromechanical resonance to obtain efficient energy transformation.
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Ceramic filters in mobile communications

IEE Seminar Microwave Filters and Multiplexers, 2000
Dielectric resonators find their use in a wide range of applications for mobile communications. Suspended resonators, notably TE01δ mode resonators, are optimal when very high Qu are needed, typically in very low-loss narrow band filters. When further volume reduction is needed, the degeneracy of multimode resonances is used.
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