Showing papers on "Vapours published in 1991"
TL;DR: Sorption and permeation of several organic vapours in poly (dimethylsiloxane) were investigated in this article, where the solubility and permeability coefficients measured show a strong dependence of the applied vapour activity typical for these systems, contrary to the behaviour of permanent gases.
120 citations
Patent•
28 Feb 1991
TL;DR: In this paper, the authors describe a pyrolysis cell with a hollow metallic conductor connected to a microwave emitter, and through which vapour passage passes an insulating pipe for disposal of organic vapours.
Abstract: Disposal of organic vapours, esp. solvent vapours, is effected by ionisation and/or dissociation obtd. from vapour passage through an electromagnetic alternating field, pref. of a standing electromagnetic wave which is pref. transverse or inclined to the propagation direction in the region of an amplitude max. of the electric field vector. Appts. for disposal of organic vapours esp. solvent vapour mixed with a carrier gas (e.g. air), has electromagnetic pyrolysis cell(24) comprising hollow metallic conductor(32) which is connected to a microwave emitter(34) and through which passes an insulating pipe(22) for vapour passage. ADVANTAGE - Organic vapours are decomposed and made innocous by a relatively simple physical process.
5 citations
4 citations
TL;DR: In this article, gases or vapours of different molecular size have been used to evaluate the adsorption and separation ability of the carbon products, and the results showed that carbon products are adsorbed and separated with high efficiency.
3 citations
TL;DR: In this article, the equilibria between (Cs 1−x ) 3 Sb and alkali vapours have been studied experimentally at 200 °C and the phases synthesized by gas-solid reaction have been compared to those obtained by solid state reaction.
2 citations
Patent•
23 Sep 1991
TL;DR: In this article, a method of removing organic and inorganic pollutants in the form of gases, vapours or aerosols from a gaseous effluent (F) passes through a series of heat exchangers (4a, 5a, 4b, 5b) in which it is cooled so that the pollutants are separated by solidification.
Abstract: In a method of removing organic and inorganic pollutants in the form of gases, vapours or aerosols from a gaseous effluent (F), the effluent (F) passes through a series of heat exchangers (4a, 5a, 4b, 5b) in which it is cooled so that the pollutants are separated by solidification.
2 citations
Patent•
21 Aug 1991
TL;DR: In this paper, a device for capturing and collecting fuel vapours in an internal-combustion engine via a gas draw-off line was proposed to avoid the use of an activated-charcoal filter in the gas drawoff line.
Abstract: In a device for capturing and collecting fuel vapours in an internal-combustion engine via a gas draw-off line 6, 7 from which the fuel is fed to the fuel circuit, a condensation system reconverts the vapour to the liquid phase Preferably the condensation system comprises a compressor 5 and a pressure chamber 9 in which the compressed vapours condense As a result of the fuel-vapour condensation, the use of an activated-charcoal filter in the gas draw-off line is avoided
1 citations
1 citations
Patent•
24 Jan 1991
TL;DR: The use of a body made of porous sintered metal, at least some of which may be contained in the catalytically active constituents, results not only in greater strength, which is structurally advantageous, but also in improved operation as mentioned in this paper.
Abstract: Permeable porous body for treating gases and/or vapours and/or liquids and process for manufacturing it. To date, porous ceramic bodies have been used in catalysts and filters for treating gases, vapours or liquids, for example exhaust gases from internal combustion engines. These ceramic bodies are sensitive to shocks and, because of the poor thermal conductivity of the ceramic material, are prone to thermal decomposition due to overheating during combustion of the soot deposits. The use of a body made of porous sintered metal, at least some of which may be contained in the catalytically active constituents, results not only in greater strength, which is structurally advantageous, but also in improved operation. The body has a higher thermal conductivity than ceramic material, for example when used as a soot filter, which promotes earlier ignition and hence more uniform combustion of the soot deposits.
1 citations
Patent•
18 Nov 1991
TL;DR: In this article, the authors describe a refrigerating plant consisting of a boiler, a condenser for the ammonia vapours, a capillary tube to convey the liquid ammonia, by heat exchange, to a vaporiser, an absorber with an expansion coil, a supply pipe for poor solution and another one for rich solution, a heat exchanger and a pipe for equalising the pressures between the absorber and the condenser.
Abstract: The refrigerating plant is used for milk transport between different collecting units. It comprises a boiler, with the role to release the ammonia vapours from a solution and to circulate it, a rectifier intended to retain the water vapours mixed with ammonia ones and to return them, by condensation, to the boiler, a condenser for the ammonia vapours, a capillary tube to convey the liquid ammonia, by heat exchange, to a vaporiser, an absorber with an expansion coil, a supply pipe for poor solution and another one for rich solution, a heat exchanger and a pipe for equalising the pressures between the absorber and the condenser.
TL;DR: In this paper, the diffusion of gases through polymers has been investigated systematically and diffusivity, solubility, and permeability parameters of the same gas through different polymers have been used to describe the permeability of other gases and vapours in the polymer materials in question.