Abstract: A rotating connection device forming a seal between an inner element (1) and an outer element (14) of larger diameter than the inner element, these two elements being co-axial, cylindrically symmetric and rotating in relation to one another. It comprises a shell (16) placed in the annular space between the two elements, at least a first ring-type seal (19) secured to the shell, placed between the latter and inner element (1), at least a second ring-type seal (23) placed between two opposite walls (22, 18) of shell (16) and of outer element (14), both perpendicular to the axis of rotation, and means (24-26) for pressing the two walls against one another by means of the ring-type seal with an adjustable application force. This connection device allows substantial motions between the two elements, radial as well as longitudinal. The device can be used: for example for connecting a pipe linking an outer device and the central part of the rotating ring gear of a heat exchange and/or incineration system.

Abstract: The invention concerns a process for deodorizing malodorous gaseous effluents from cooking equipment, particularly in restaurants and in the food industry, by washing with an aqueous solution comprising an alkaline or alkaline-earth salt of a dicarboxylic acid or a polycarboxylic acid, optionally associated with a surfactant and a diholoside.

Abstract: The invention relates to a cleaning device wherein polluted effluents are passed into a cage (2) where a partitioned ring (1) of vertical axis, containing a charge (M) of a solid material exhibiting a large heat exchange surface and, against the inner wall thereof, a catalyst bed (9), rotates. An autothermal working point is reached by including in the catalyst bed heating means (resistors for example) that are temporarily connected to the power supply system, after which the cleaning operations with rotation of the ring and effluent circulation are launched. Heat control is thereafter provided by controlled injection into the effluents of either a fuel or sprayed water for example by means of injectors (15, 16). The device can be applied in the field of incineration of VOC for example in industrial effluents.

Abstract: A process and device for scrubbing flows of gaseous effluents loaded with polluting substances, wherein the effluents are caused to circulate through a device including an array of scrubber units (4a to 4n) juxtaposed in an enclosure (3), each containing materials adsorbing the substances. When the adsorbing load thereof is saturated and for the scrubber units (4) to regain the scrubbing capacity thereof, they are selectively and successively isolated by a mobile collector (8) during the time required for their desorption by heating and for the substances to be transferred by an auxiliary fluid (a fraction of the circulating effluents for example or a gas delivered selectively to the inlet of the scrubber unit to be desorbed by an auxiliary circuit), and the substances mixed with the auxiliary fluid are possibly transferred towards a reactor (10) suited for removing them. The process can be applied for concentrating and scrubbing of polluting substances such as VOCs or gas dehumidification.

Abstract: The invention relates to a method of manufacture of carbon black by pyrolysis of rubber waste previously ground and from which the scrap has been removed. With this method, pyrolysis is carried out in the presence of at least one gas selected from water vapour, carbon dioxide, a combustion gas or a mixture of water vapour and at least one inert gas.

Abstract: A process of cleaning a gas and a rotating catalytic gas cleaning device including a crown of vertical axis driven into rotation in a cage. The crown has an annular catalyst bed covering its inner wall and an annular thermal load, outside the catalytic bed, made of a material exhibiting a large heat exchange surface. A polluted gas is radially passed from a peripheral inlet to a central zone of the crown with crossing of an annular thermal load and a catalytic layer. The gas is radially passed gas from the central zone to a peripheral outlet, while again crossing the catalytic bed and thermal load with thermal exchange.

Abstract: The invention relates to a packing block made by alternately stacking thin corrugated plates (P1, P3) with a first elongation direction (X1), thin corrugated plates with a second elongation direction (X2) different from the first, and sheets (2) made of a material adsorbing the contaminants, interposed between the various thin plates in this stack. Such a block is used to pack the units of a purification device and is disposed in a stream of effluents containing contaminants such that the effluents pass through the channels delimited by the corrugations of the corrugated plates and the interposed sheets.

Abstract: A heat transfer device includes a ring having a vertical axis that can rotate inside a cage. The ring is inwardly provided with partitions. A permanent circulation of gaseous effluents is established on one hand between an effluent delivery pipe and a central zone via a first limited angular sector of the ring and on the other hand between the central zone and an effluent discharge pipe 6 via a second limited angular sector of the ring. The ring is charged with a mass of large heat exchange surface material and the device can be used for recovering positive or negative thermal energy. A thermal reactor of the catalytic bed type, for example, can be placed in the central zone for removing volatile organic compounds (VOC). The device may be used for catalytic or thermal oxidation of the organic compounds in gaseous effluents, for example.

Abstract: A process for the catalytic deodorization of and reduction of the nitrogen content in liquid manure tank effluents comprises:(a) in a basic medium catalytically oxidizing mercaptans into disulphides while simultaneously forming salts of hydrogen sulphide,(b) catalytically post combusting ammonia and amines to form nitrogen oxide,(c) catalytically reducing nitrogen oxides in the presence of a gaseous stream containing ammonia and amines.

Abstract: The invention concerns a process for the treatment of ventilation air containing malodorous gases, e.g., styrene, involving:1. An adsorption step onto a hydrophobic zeolite containing, for example, platinum and/or palladium,2. A combustion-desorption step wherein hot gases pass over the impregnated zeolite in order to desorb the gas, e.g., styrene and burn it on the zeolite,in which the zeolite is encased in small tetrahedral-shaped containers.