Abstract: The invention concerns an inner tray, arranged inside a chamber, comprising a plurality of parallel beams (1), located in a common horizontal plane and fixed through their ends to the wall of the chamber, and, between said beams and supported thereby, rows of adjacent rectangular plates (2), completely covering the space between the beams. The invention is characterized in that the supporting edges (3) of the plates (2) through which the latter are supported on the beams (1), are folded downwards by two substantially right-angled folds, and in that each of the edges (4) of the plates (2), perpendicular to the beams (1) is folded so as to form a female part (4a) or a male part (4b) capable of being respectively nested in a male (4b) or female (4a) part formed by the folded edge of the adjacent plate. The invention also concerns a chamber containing such a tray.

Abstract: The invention concerns an inner tray, arranged inside a chamber, comprising a plurality of parallel beams (1), located in a common horizontal plane and fixed through their ends to the wall of the chamber, and, between said beams and supported thereby, rows of adjacent rectangular plates (2), completely covering the space between the beams. The invention is characterized in that the supporting edges (3) of the plates (2) through which the latter are supported on the beams (1), are folded downwards by two substantially right-angled folds, and in that each of the edges (4) of the plates (2), perpendicular to the beams (1) is folded so as to form a female part (4a) or a male part (4b) capable of being respectively nested in a male (4b) or female (4a) part formed by the folded edge of the adjacent plate. The invention also concerns a chamber containing such a tray.

Abstract: The invention relates to a selective desulphurisation method for thiophene derivatives contained in the hydrocarbons emitted from the distillation of crude oil, refined or not, consisting in oxidising the atoms of thiophene sulphur in sulphone in the presence of an oxidising agent and separating the sulphonated compounds from said hydrocarbons. This inventive method comprises at least one first stage involving the oxidation/absorption by heterogeneous catalysis of the sulphurous compounds in an organic environment, at a temperature of at least 40?C, at atmospheric pressure in the presence of an organic oxidiser from the family of peroxides and peracids, in the presence of a catalyst having a specific surface area greater than 100 m2/g and a porosity varying from 0.2 to 4 ml/g, and a second stage wherein the used catalyst is regenerated.

Abstract: A catalytic support includes a substantial quantity of at least one SVI group Periodic Table metal oxide in which is incorporated silica. The mass ratio between the quantity of SVI group metal oxide and the quantity of silica it contains ranges between 5 and 70, the SVI group metal oxide is in crystalline form, and the specific surface of the support is greater than or equal to 160 m2/g.

Abstract: A method for obtaining oil products such as diesel fuel with improved quality, from a gas oil fraction containing organosulphur compounds such as dibenzenethiophenes and/or their derivatives, with initial and final boiling points generally ranging between about 170 and 480° C. The method includes at least two steps which consist in: (a) liquid-liquid extraction wherein the diesel fuel fraction is contacted with a solvent so as to obtain a gas oil-type raffinate with low content of sulphur and aromatic compounds and an extract rich in solvent and with high content of sulphur and aromatic compounds; (b) oxidation of the extract sulphur compounds so as to obtain, after separation, a heavy gas oil-type hydrocarbon effluent with low sulphur content, and a residue comprising oxidased organosulphur compounds. The invention also concerns oil products obtained by said method which can be used either for the formation of fuel for internal combustion engine with compression ignition (of the diesel type) or as fuel.

Abstract: Disclosed is a ventilation arrangement for buildings with heat removal from an exhaust-air flow (LAb) discharged from the building and/or from a fresh-air flow (Lzu) supplied to the building, the arrangement having a heat pump which has a coolant/water heat exchanger (WW) with a mass flow controlled by the water system and having a coolant/air heat exchanger (LWzu, LWAb) serving the fresh-air flow (Lzu) and the exhaust-air flow (LAb), the coolant/air heat exchanger (LWzu, LWAb) being connectable in series to the coolant/water heat exchanger (WW).

Abstract: The invention concerns a catalyst containing at least one amorphous oxide matrix, at least one carbide and phosphorous deposited on said catalyst or contained in the matrix, in which the carbide contain at least one group VIB element and, optionally, at least one element from group VIII of the periodic table. The invention also concerns the use of the catalyst for hydrodesulphurisation and hydrogenation of aromatic compounds in gas oils with a low sulphur content.