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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TL;DR: In this paper, an apparatus for the measurement of preferential sorption from liquid carriers by means of a continuous-flow system has been described and modified to investigate the adsorption of organic vapours on to surfaces of high specific area.
Abstract: AN apparatus for the measurement of heats of preferential sorption from liquid carriers by means of a continuous-flow system has already been described1. It was felt that this technique mightalso be applied to adsorption processes taking place from the vapour phase. A later model of the apparatus originally described was therefore modified to investigate the adsorption of organic vapours on to surfaces of high specific area.
6 citations
Patent•
16 Nov 1999
TL;DR: In this paper, the use of natural silicates such as sepiolite, palygorskite or bentonite for the removal of mercury from gas streams resulting from industrial processes is described.
Abstract: Procedure for sulphuration of natural silicates in order to retain vapours of metals Procedure for preparation of sulphurated materials from natural silicates and the use thereof for retaining vapours of metals such as mercury The adsorbent products prepared by the procedure of the invention can be used in the elimination of mercury from gas streams resulting from industrial processes: exhaust gases from thermal power stations, mining, the chloro-alkali industry, urban waste incineration, processing and combustion of fossil fuels, coal, natural gas or petroleum, gasification of coal, and recycling of products (batteries) The present invention relates to the use of natural silicates such as sepiolite, palygorskite or bentonite to the preparation thereof (mechanical, thermal or chemical treatment) to the various procedures for deposition of sulphur in such a way that they can be applied for the retention of vapours of mercury or other heavy metals and to the strategy for the use of solids with reference to sizes, composition, area/volume ratio, depending on the process for purification
6 citations
Patent•
27 Dec 1960
TL;DR: In this paper, cyclohexanone is obtained from crude cyclomethane by evaporating the bulk of the latter in a first vaporization zone at 140-180 DEG C, supplying the liquid residue to a second vaporisation zone wherein it is vaporized as far as possible by a suitably correlated adjustment of temperature and pressure.
Abstract: Cyclohexanone is obtained from crude cyclohexanol by evaporating the bulk of the latter in a first vaporization zone at 140-180 DEG C., supplying the liquid residue to a second vaporization zone wherein it is vaporized as far as possible by a suitably correlated adjustment of temperature and pressure, returning the vapours from the second to the first zone (alternatively having condensed the vapours to liquid and returning this to the first zone), the vapours preheated to 250-400 DEG C. being then passed over a dehydrogenation catalyst at a velocity of 50-100 cm./sec., the residence period at the catalyst being 4-12 seconds. The catalyst is a heavy metal of Group Ib, IIb, VIa or VIII or an oxide or carbonate or mixtures thereof; copper supported on pumice or ferric oxide is specified.
6 citations
Patent•
10 Feb 1982TL;DR: In this paper, the authors proposed to separate extraneous materials contained in the vapours by precipitation, filtration or scrubbing, before the compression of the liquid vapours to provide the most economical procedure possible.
Abstract: In a method and apparatus for using the heat in the vapours emanating from liquids in thickening processes, the vapours are compressed for the purpose of heating or evaporating liquid and cooled, and condensed, in heat exchange with the liquid. To provide the most economical procedure possible, it is proposed to separate off extraneous materials contained in the vapours by precipitation, filtration or scrubbing, before the compression of the vapours.
6 citations
TL;DR: In this article, the energy required to produce one ion pair, W -value, for electron in vapours of several dielectric liquids has been determined by Bragg-Gray principle.
Abstract: The energy required to produce one ion pair, W -value, for electron in vapours of several dielectric liquids has been determined by Bragg-Gray principle. The cylindrical ionization chamber used for measurements was made of stainless steel. Its wall thickness and effective volume were 1 mm and 10 cm 3 , respectively. The vapours were obtained from the liquid samples for spectroscopy. The experiments were carried out up to saturated vapour pressure of these liquids at room temperature. 60 Co was used for gamma-radiation source in every case. To determine the W -value for several kinds of vapours, argon, nitrogen and air were used as standards. The W -value obtained for vapours of n -hexane, cyclohexane, benzene, carbon disulphide, dichloromethane, and carbon tetrachloride were 27.9, 25.3, 29.0, 24.7, 26.1, and 26.0 eV, respectively.
6 citations