Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1987-01-07
1988-02-23
Prunner, Kathleen J.
Gas separation
Means within gas stream for conducting concentrate to collector
55296, 55390, 55474, 55479, B01D 3320, B01D 2324
Patent
active
047268212
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an apparatus for the treatment of substances in a gas stream in accordance with the preamble of patent claim 1.
An apparatus of this type is known per se (German Pat. No. 30 02 773).
As this known apparatus is used as a filtering plant, it is frequently also referred to as a counter-flow packed-bed filter. A filter of this type is used for example to remove the dust from the gas during the production of lime or cement. In the case of the known apparatus a suitable treatment or filtering medium can be ordinary filtering gravel or even fractions of this material, which forms the bulk material present in the operating process and to which for example the particles (dust particles), which are present in the gas or the air to be cleaned and which are to be filtered out, are to return.
In the case of the known filter the annular treatment spaces, arranged in a fixed manner one above the other in the interior of a casing and concentric to a vertical axis or axis of symmetry, are formed in such a way that--with the exception of the lowest treatment space--each treatment space extends with its lower part bounded by its walls into the upper part of the underlying treatment space and is connected at that point to the underlying treatment space by a passage opening. The fresh treatment or filtering medium, i.e. the treatment or filtering medium which has not yet undergone the operating process in the apparatus, is conveyed to the upper inlet opening of each treatment space by way of a plurality of fixed ducts which comprise corresponding openings and which extend in the vertical direction in each case and are arranged distributed at uniform intervals about the treatment spaces. In order to remove the treatment medium from the treatment spaces in the region of the lower outlet openings of these spaces, evacuation apparatus are provided in the case of the known apparatus, at least one evacuation apparatus being provided for each treatment space. All the evacuation apparatus, which are formed by wipers for example and pass through the charging cones of the treatment medium occurring at the lower outlet openings are secured to a shaft which is situated coaxially with the axis of symmetry of the treatment spaces and is driven in a rotating manner about the said axis.
The known apparatus is not only suitable as a filter but can also be used generally for the treatment of substances in a gas stream, and also for example for absorption and/or adsorption, in order to remove or filter out gas constituents for example, such as fluorine etc. from a gas stream, and can also be used as a reactor, in order to produce a chemical reaction between the treatment medium and the gas stream or substances present in the gas stream, or even to dry the treatment medium by the gas stream. On account of the nested arrangement of the individual treatment spaces and on account of the passage openings provided in the lower part of the said treatment spaces (with the exception of the lowest treatment space) this known apparatus has considerable advantages. In the first place for example this design prevents the treatment medium from being deposited, forming lumps or forming a coating which would obstruct the evacuation apparatus or their operation in corners or blind spaces in the lower region of the treatment spaces, i.e. in the active region of the evacuation apparatus. A further major advantage of the known apparatus is that, on account of the nested arrangement of the treatment spaces and on account of the fact that with the exception of the lower treatment space each treatment space is connected by its lower part to the underlying treatment space by the passage opening, a particularly advantageous "sluicing effect" which substantially improves the treatment result is achieved, namely in the form that the gas entering a treatment space at the lower outlet opening for the treatment medium does not leave the treatment medium at the upper region of the said treatment space but rather (on account of the shorter flow path) a
REFERENCES:
patent: 2493356 (1950-01-01), Mercier et al.
patent: 4214878 (1980-07-01), Weiss
patent: 4225327 (1980-09-01), Sgaslik et al.
patent: 4351650 (1982-09-01), Shinoda et al.
patent: 4354862 (1982-10-01), Sgaslik
Andre Buechl Kalk- und Portlandzementwerk
Prunner Kathleen J.
LandOfFree
Apparatus for the treatment of substrates in a gas stream does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for the treatment of substrates in a gas stream, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for the treatment of substrates in a gas stream will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-601376