Topic
Vapours
About: Vapours is a research topic. Over the lifetime, 1153 publications have been published within this topic receiving 15022 citations.
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Papers
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TL;DR: In this paper, the parameters influencing the separation of C 8 hydrocarbons by permeation through a liquid membrane were examined, and the methodology of operation was observed to influence the separation results.
27 citations
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TL;DR: In conclusion, dermal uptake of chemical vapours needs more attention, as such exposures are common, data are scarce and few predictive models exist.
27 citations
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24 Dec 1987
TL;DR: In this article, a drier is fed from outside not only the fluidizing medium but also a high-energy heating medium, whereas the vapours discharged remain unutilised.
Abstract: In the case of known processes for drying moist bulk materials in a fluidised bed, the drier is fed from outside not only the fluidising medium but also a high-energy heating medium, whereas the vapours discharged remain unutilised. By the process according to the invention, the feeding of heating medium from outside is to be avoided, the energy balance improved and the emission of vapours reduced. For this purpose, a partial stream (15) of the vapours (10), subjected to dust separation in an electrostatic precipitator (11), is compressed into saturated steam for use as a heating medium (18) in a compressor (14), with the supply of electric energy and the injection (17) of vapour condensate (29). A second partial stream (13) serves as fluidising medium for the preheated bulk material (5) passed through the drier (6). The preheating takes place in a heat exchanger (2), which has a partial stream (3) of the vapour condensate (21) flowing through it. After phase separation in an expansion vessel (4), the vapour phase (23) of the condensate is fed to the partial stream (16). The process is suitable in particular for the drying of pit-moist lignite or of moist sewage sludge.
27 citations
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TL;DR: In this paper, a gas sensor that utilizes chemiluminescence (CL) during the catalytic oxidation of odour vapours on a sintered aluminium oxide (γ-Al 2 O 3 ) layer is proposed.
Abstract: A gas sensor that utilizes chemiluminescence (CL) during the catalytic oxidation of odour vapours on a sintered aluminium oxide (γ-Al 2 O 3 ) layer is proposed. A new technique is applied to determine continuously the concentration of each constituent in a mixed vapour by a single CL-based sensor. The sensor is heated and cooled periodically in a temperature cycle between 200 and 740 °C at constant heating and cooling rates of ±9 °C s −1 . By measuring the total CL intensities in the heating and cooling courses, we can obtain the concentration of each constituent for a mixed vapour of ethanol and acetone in air. The lowest detection limit of the concentration of these vapours is of the order of 1 ppm.
27 citations