Abstract: Passing an alcoholic beverage through a solid substance that has pores whose diameter allows only ethyl alcohol to pass through and fixes said alcohol by adsorption, said solid substance being either a Y-type zeolite or a monolithic-type microporous substance. In the beverage from which alcohol is partially or totally removed, the process makes it possible to retain in their entirety the molecules that are responsible in particular for the color, the aroma, and the taste of wine, and in particular cliousclatine and/or trypotophan.

Abstract: A process is provided for starting a catalytic hydrocarbon conversion reaction or using a hydrocarbon conversion catalyst into which a sulfur agent has been incorporated. In an inert atmosphere, the sulfur-impregnated catalyst is treated with dilute hydrogen to prevent excessive temperatures during the exothermic transformation of oxides into sulfides of the active metals of the catalyst.

Abstract: The invention relates to a process and apparatus for transport, storage, loading and unloading of catalyst or adsorbent particles utilizing a special container equipped with a fluid-tight valve and which can rock progressively by means of a reverse-lock, escapement-type ratchet.

Abstract: An ampoule is filled completely. The ampoule, formed from a casing which may be made of plastic, for example, or made of transparent, opaque or coloured glass, is closed after is has been filled by a frustoconical transverse closure device. The casing of the closure device has a wall provided with an expansion compensator, if the elastic properties of the material used to make this latter are inadequate for complete filling. Filling orifices are provided with a conical raised portion on the outside. Disposed inside the container are hollow spheres which permit the effects of liquid expansion to be compensated for, if necessary, and which are used to make the liquid homogeneous. Caps protect the filling orifices.

Abstract: For the impregnation into the pores of a hydrocarbon treatment catalyst of a sulfurizing agent chosen from element sulfur and organic polysulfides with the aid of a solvent, the impregnation process totally or partially comprises a constituent of the olefin or olefin fraction type, e.g., of the vegetable oil type, or a similar constituent. The use of such a constituent makes it possible to significantly reduce the exothermal effect which occurs during presulfurization, compared with the exothermal effects obtained without using such a constituent.

Abstract: A solid mass for the recovery of mercury, comprising a solid mineral support or dispersant, essentially copper and sulphur at least partly in the form of copper sulfide is produced by the following stages:a) at least one copper compound other than a sulphide is incorporated into a solid mineral dispersant or carrier,b) the product obtained in stage (a) is calcined in order at least partly to convert the copper compound or compounds which it contains into copper oxide (CuO and/or Cu.sub.2 O),c) the product obtained in stage (b) or in stage (a) if there has not been a stage (b) is brought into contact with elementary sulphur,d) the product resulting from stage (c) referred to as the precursor, is subjected to a thermal treatment in a non-oxidizing atmosphere and accompanied by gas scavenging, to a temperature and for a sufficient time to allow the formation of sulphide of the metal(s) present.

Abstract: For the sulfuration a new or regenerated catalyst, containing a support with a base of at least one metal oxide or a metalloid, and at least one active metal, the catalyst is impregnated in the absence of hydrogen with an aqueous ammonium sulfide solution at a temperature between 0.degree. and 50.degree., in the presence of at least one sulfur additive selected in the group consisting of thiodazoles, thio acids, thio amides, thiocyanates, thio esters, thiophenols, thiosemicarbazides, thioureas, mercapto alcohols of formula ##STR1## where n and m are whole numbers, R.sub.1, R.sub.2, R.sub.3, R.sub.4, identical or different, are atoms of hydrogen or alkyl, aryl, aralkyl, alkylaryl organic radicals, thiols of formula R.sub.1 --SH where R is an organic radical, thio ethers of formula R.sub.1 --S--R.sub.2 where R.sub.1 and R.sub.2 are defined as above and the organic disulfides of formula R.sub.1 --S--S--R.sub.2 where R.sub.1 and R.sub.2 are defined as above.

Abstract: The invention relates to a process making it possible when a refining catalyst is subject preferably in situ to the conventional activation reaction in the presence of hydrogen (generally at above 100.degree. C.) to carry out, as a result of the in situ presence of hydrogen, the sulphurization at the required stoichiometric or non-stoichiometric level of the active metal or metals in the composition of the catalyst. In the absence of hydrogen, the process consists of incorporating into the porosity of the new or regenerated catalyst at least one sulphurizing agent of general formula:R--S(n)--R'in which n is an integer from 3 to 20 and R represents an organic radical.The invention is characterized in that a critical elementary sulphur quantity is added to the sulphurizing agent.

Abstract: This invention concerns a process for reducing a refining catalyst before it is put into use, the catalyst containing a support and an active phase based on at least one noble or non-noble metal of group VIII or of group Ib of the periodic classification of elements, consisting of:(a) impregnating the catalyst with an aqueous or organic solution of a reducing agent,(b) decomposing the reducing agent by heating with a catalyst, and(c) drying the catalyst thus obtained.The catalyst is used in selective hydrogention of a feed such as olefin, acetylenes, diolefins etc.

Abstract: The invention relates to a process of reduction of a refining catalyst before its use, the catalyst containing a support and an active phase with a base of at least one noble or nonnoble metal of Group VIII or Group Ib of the periodic table, the process consisting in:a) impregnating the catalyst with an aqueous or organic solution of a reducing agent compound,b) breaking down the reducing agent compound by heating the catalyst;c) drying the catalyst thus obtained.The invention is characterized in that a halogen additive is added with the reducing agent.The catalyst thus treated is particularly suitable, for example, for selective hydrogenation of unsaturated hydrocarbons.

Abstract: This invention concerns a process for reducing a refining catalyst before it is put into use, the catalyst containing a support and an active phase based on at least one noble or non-noble metal of group VIII or of group Ib of the periodic classification of elements, consisting of:(a) impregnating the catalyst with an aqueous or organic solution of a reducing agent,(b) decomposing the reducing agent by heating with a catalyst, and(c) drying the catalyst thus obtained.

Abstract: The invention concerns a process and an apparatus for separating powdery materials shaped as balls or pellets. It is characterized by the use of a vibrating screw elevator (4) subjected to vibrations of an amplitude so selected as to produce on the screw turns (5), an upward flow of the particles to be removed, while maintaining a downward flow of the particles to be recovered. The invention provides in particular for the separation of round balls from broken balls.

Abstract: Presulfurization of a catalyst used, e.g., for hydrocarbon conversion, wherein a polysulfide is employed as the sulfurization agent. In the first stage of the presulfurization, phosphorous, a halogen, or compounds thereof are introduced.

Abstract: The invention involves a process comprising regenerating a catalyst comprising (a) a support containing at least one oxide of a metal or metalloid and (b) at least one active metal, said process comprising in a first stage treating said catalyst in the absence of hydrogen with at least one sulfurizing agent comprising a polysulfide of the formulaR--S.sub.(n) --R'wherein n is 2 to 20, R is an organic radical of 1-150 carbon atoms per molecule and R' is independently a radical as defined for R or a hydrogen atom, whereby said agent is incorporated at least in part in said catalyst, in a first portion of a second stage, treating the catalyst in the absence of hydrogen and in the presence of steam, moist air or moist inert gas, at a temperature up to 275.degree. C., and, in a second portion of the second stage, treating the catalyst in the presence of hydrogen at a temperature of at least 275.degree. C., wherein in the first stage a nitrogen compound is added.

Abstract: The invention relates to a process for the separation of granulate materials, in extruded form of different lengths and of the same or different diameter. It is characterized by the use of a helicoidal vibrating elevator subjected to vibrations whose amplitude is chosen so as to cause on the threads of the spiral on the one hand the ascending flow of all the particles and on the other hand the recovery of the finest particles on the outer edge of the upper thread of the spiral and the largest particles on the inner edge of the upper thread of this spiral.

Abstract: The invention concerns a process for sulfurizing a catalyst, particularly a refining catalyst comprising a carrier and active metal oxides.In a first step, a sulfur compound mainly consisting of organic polysulfide is introduced into the catalyst mass. A second step consists of first sulfurizing, in the absence of hydrogen, the active metal oxides at a temperature lower than 275.degree. C. and then activating the catalyst at a temperature higher than 275.degree. C.The present invention concerns a process for presulfurizing a hydrocarbon treatment catalyst and/or preconditioning a catalyst in view of subsequent presulfurization.

Abstract: A process and apparatus for the transportation and heating of granulated materials, particularly of solid particles of catalyst used for hydrocarbon conversion which must be activated or regenerated. The process comprises moving a bed of catalyst particles on travelling bands or floor plates passing through an elongate chamber and eventually inclined to the axis thereof. The bands are subjected to vibrations imparting to said bed a unidirectional motion and, said bed on said bands being exposed to heating by means of electromagnetic radiations of a wave length range from 0.38 .mu.m to 50 mm.

Abstract: A process and apparatus for the transportation and heating of granulated materials, particularly of solid particles of catalyst used for hydrocarbon conversion which must be activated or regenerated. The process comprises moving a bed of catalyst particles on travelling bands or floor plates passing through an elongate chamber and eventually inclined to the axis. The bands are subjected to vibrations imparting to said bed an unidirectional motion, and said bed on said bands being exposed to heating by means of electromagnetic radiations of a wave length range from 0.38 .mu.m to 50 mm.

Abstract: Catalysts for the treatment of hydrocarbons are presulfurized or presulfided ex-situ, in the absence of hydrogen, by means of a polysulfide of the general formula R--S.sub.(n) --R' wherein n is an interger from 3 to 20 and R and R' are each an organic radical having from 1 to 150 carbon atoms, R' being optionally a hydrogen atom, the so-presulfurized or presulfided catalysts being subsequently activated with hydrogen during their use in the hydrotreatment process of a hydrocarbon charge, i.e. in-situ. An aldehyde or an alcohol or a ketone, an ether or an organic acid, may be added, as promoter, to the polysulfide.

Abstract: Catalyst for the decomposition of nitrogen oxides, particularly for use in catalytic exhaust boxes in view of decomposing the nitrogen oxides contained in the exhaust gases from internal combustion engines, comprising, deposited on a carrier, from 3 to 20% of an active phase of the formula Ni.sub.x (Fe.sub.y Cr.sub.z)O.sub.t, in which x has a value from 0.5 to 1.5, y + z a value from 1.5 to 3, the ratio ##EQU1## A VALUE FROM 0.01 TO 0.9 AND T A VALUE LOWER THAN 10.