Abstract: The invention provides a method of continuously preparing caseinate from milk proteins in non-soluble powder form in an extruder machine having two co-rotating and interpenetrating screws into which water and an alkaline reagent are introduced, and the mixture formed by the milk proteins, the water, and the alkaline reagent is subjected to a plurality of steps of kneading under pressure and of shearing with the temperature rising to obtain at the outlet from the extruder machine a caseinate paste, the caseinate paste is cooled to bring its temperature to below 20° C., a continuous thin sheet of caseinate paste is formed, and the sheet is cut up into a plurality of parallel strips, and these strips are cut up into small-sized pieces of caseinate. The invention also provides an installation for continuously preparing caseinate.

Abstract: A method and system is intended for fine proportioning of fluids injected into a pumping installation, e.g., a liquid chromatography installation, allowing to compensate for non-return valve errors. The system includes a fluid delivery system including vessels for constituents (A, B, X) that communicate with a pumping unit (1–11) by means of a one-way valve (8) that opens upon suction, and a control unit (PC) that adjusts the respective proportions of the various fluids sucked by acting on the opening time of solenoid valves (EV1 to Even) associated with the various vessels. As the opening and closing times of the one-way valve are most often unequal in practice, control unit (PC) is suited to cyclically change the order of the control signals applied to the various solenoid valves during the various successive suction stages of each pumping unit so as to compensate on average for the proportioning inequalities due to each one-way valve.

Abstract: The invention relates to a method for the continuous preparation of pellets intended for the production of crusty and honeycombed snack-type food products from a natural starchy raw material having a starch content that is equal to or greater than 60% and a protein content below 13%. According to the invention, the raw material is preconditioned; said raw material is fed continuously into an extrusion machine with two co-rotary and co-penetrating screws; a supply and transport step, a cooking step, a degassing step and a cooling step are performed in the extrusion machine; a continuous bead of cooked dough having a moisture content of between 20 and 30% is formed; the dough is oriented in a vertical direction and pushed through a multiple-outlet mould to form several continuous beads; the beads are cut transversely to form pellets. The pellets are subsequently dried to produce pellets having a moisture content of between 10 and 12%.

Abstract: The present invention relates to a catalyst support comprising a monolithic body (1) with a first network of channels (2). According to the invention, the support comprises at least an additional network of channels (3) in an arrangement whereby channels (2, 3) of the networks intersect one another.

Abstract: Method and system intended for fine proportioning of fluids injected into a pumping installation, allowing to compensate for non-return valve errors.

Abstract: The invention provides a method of continuously preparing caseinate from milk proteins in non-soluble powder form in an extruder machine having two co-rotating and interpenetrating screws into which water and an alkaline reagent are introduced, and the mixture formed by the milk proteins, the water, and the alkaline reagent is subjected to a plurality of steps of kneading under pressure and of shearing with the temperature rising to obtain at the outlet from the extruder machine a caseinate paste, the caseinate paste is cooled to bring its temperature to below 20° C., a continuous thin sheet of caseinate paste is formed, and the sheet is cut up into a plurality of parallel strips, and these strips are cut up into small-sized pieces of caseinate. The invention also provides an installation for continuously preparing caseinate.

Abstract: The present invention relates to a process for continuous gas phase polymerization of olefin(s) in a reactor containing a fluidized bed, consisting of a cylinder with a vertical side wall and of a desurging or disengagement chamber (3) mounted above the said cylinder, characterized in that the fluidized bed occupies at least all of the cylinder with a vertical side wall of the reactor.

Abstract: The present invention relates to a process for continuous gas phase polymerization of olefin(s) in a reactor containing a fluidized bed, consisting of a cylinder with a vertical side wall and of a desurging or disengagement chamber (3) mounted above the said cylinder, characterized in that the fluidized bed occupies at least all of the cylinder with a vertical side wall of the reactor.

Abstract: The present invention relates to a process for continuous gas phase polymerization of olefin(s) in a reactor containing a fluidized bed, consisting of a cylinder with a vertical side wall and of a desurging or disengagement chamber mounted above the said cylinder, characterized in that the fluidized bed occupies at least all of the cylinder with a vertical side wall of the reactor.

Abstract: The invention involves the production of a catalyst that contains (1) at least one refractory inorganic oxide support, (2) at least one iron oxide, and (3) at least one cerium oxide, (4) at least one metal A, for example, from Groups VIB, VIIB, VIII, and IB of the Periodic System and, optionally (5) at least one compound of metal B, for example, from Groups IA, IIA, the rare-earths group, and Group IVB of the Periodic System, deposited in the form of a porous layer ("washcoat") on a ceramic or metal substrate:(a) atomizing an aqueous suspension of at least one powder of the refractory inorganic oxide, cerium salt, iron salt, and optionally salt of the metal B; and/or A(b) resuspending the resultant powder and adding any remainder or all of the compound of metal B, as well as, optionally at least one bonding agent and, optionally at least one mineral acid or organic acid;(c) coating a ceramic or metal substrate is coated with the suspension obtained in step (b);(d) calcining the resultant coated substrate;(e)

Abstract: A catalyst which is active and selective for the reduction of nitrogen oxides to molecular nitrogen by reducing agents in a medium which is superstoichiometric in oxidizing agents such as carbon monoxide, hydrogen, hydrocarbons, alcohols and other oxygen-containing organic compounds. The active phase of this catalyst is as follows:at least one inorganic refractory oxide;at least one rare earth element (A);at least one alkaline-earth element (B);at least one platinum group metal (C); andat least one silver or gold metal (D).Impregnation of (C) is advantageously followed by heat treatment in a reducing atmosphere.

Abstract: Described is catalyst that is active and selective for reducing to molecular nitrous oxides contained in a superstoichiometric medium of oxidizing agents, said reduction being conducted with agents such as carbon monoxide, hydrogen, hydrocarbons, alcohols, ethers, and other oxidized organic compounds and also with ordinary fuels such as gasolines, gas oils, liquefied gases, and compressed natural gases, whereby said catalyst comprises:at least one refractory inorganic oxide, including alumina;at least one element (A) that belongs to the group of rare earths;at least one element (B) that belongs to groups VIB, VIIB, VIII and IB of transition metals;at least one metal (C) that belongs to the group of precious metals of the platinum family, and optionallyat least one element (D) that belongs to group IIA of alkaline-earths;at least a portion of elements (A) is combined with alumina to form at the surface of the latter a microlayer of rare-earth aluminate.

Abstract: A production process for supported catalysts is described comprising:(a) preparing a coating suspension containing at least one refractory inorganic oxide and at least some of the elements intended to constitute catalytically active phase (A);(b) filling at least part of the open porosity of a support with this suspension;(c) drying the filled support by centrifuging;(d) a thermal treatment of the support to obtain a support coated by a wash coat;(e) optionally impregnating the coated support with a solution containing the rest of, or elements of, catalytically active phase (A); and(f) thermally activating the catalyst.This preparation process is of particular interest in the production of catalysts for treating exhaust gases of internal combustion engines, where the wash coat deposited on a support comprises in particular a refractory inorganic oxide, iron oxide and cerium oxide and, by way of a catalytically active element, at least one noble metal such as platinum, rhodium or palladium.

Abstract: The method of preparation comprises:a step (a) of placing in solution at least one compound of at least one metal A in at least one organic solvent S, and of at least one reducing compound R of at least one metal B in at least one organic solvent S',a step (b) of placing the reducing compound R in contact with the metal A compound,a step (d) of neutralisation of the residual reducing functions of the reducing compound R with at least one oxidizing agent O,and where applicable the addition of a selectivity agent P either during step (a) or during step (c) placed between steps (b) and (d),The catalyst obtained can be used in selective or total hydrogenation.

Abstract: A catalyst for the treatment of exhaust gases from an internal combustion engine comprises a support including a porous layer which latter includes at least one inorganic refractory oxide and an active phase containing at least cerium, iron and platinum, characterized in that said porous layer comprises at least the following percentages by weight0.3% to 4.4% of cerium;0.1% to 3.5% of iron; and0.0003% to 0.04% of platinum; andthe complement to 100% being constituted by at least one inorganic refractory oxide.The catalyst can be used in the treatment of exhaust gases from compression ignition engines, in particular from commercial vehicles with an unladen weight of 3.5 metric tons or more.

Abstract: A method for preparing multi-metal catalysts including an active phase consisting of at least two metals, A and B, which are selected from groups VIII and IB of the periodic table, and a porous support. According to the method: firstly, at least a part of the porous support is impregnated with at least one precursor of metal A; secondly, activation is performed in a neutral or oxidizing atmosphere at a temperature of 120.degree.-800.degree. C. whereafter a treatment is carried out in a reduction medium at a temperature of 0.degree.-800.degree. C.; thirdly, at least a part of the support which was previously impregnated with the precursor of metal A is impregnated with at least one precursor of metal B; and fourthly, activation is performed in a neutral or oxidizing atmosphere at a temperature of 120.degree.-800.degree. C.

Abstract: Exhaust manifold for catalytic treatment of the exhaust gases of an internal-combustion engine comprising a metallic outer tube (1) including a catalyst layer (4) in direct contact with the exhaust gases. According to the invention, the manifold also comprises at least one inner tubular element (2), substantially coaxial to said outer tube (1) and providing with the latter at least one space (3), the inner surface of said inner tube (2) being coated by said catalyst layer (4).

Abstract: A test mold assembly for evaluating the surface deformation tendency of a coverstock bonded to a reactive plastic formulation to voids in the formulation including a base adapted to support a coverstock and spaced side walls extending upwardly from the base to define a mold cavity for receiving foam precursors. The assembly further includes a lid adapted to form the top of the mold cavity and having a cover portion disposed spaced from the base. The lid includes a plurality of integral projections extending downwardly from the cover portion into the mold cavity a predetermined distance to create voids in the foam. A method of making a foam void model for evaluating the surface deformation tendency of a coverstock bonded to a reactive plastic formulation to voids in the formulation is also disclosed.

Abstract: The invention concerns a multifunctional catalyst containing cerium, uranium and at least one metal, for converting pollutants emitted by internal combustion engines, and their preparation.A catalyst comprises a porous layer containingfrom about 20% to about 99% of at least one refractory oxidefrom about 0.8% to about 70% of at least one cerium oxidefrom about 0.1% to about 50% of at least one uranium oxidefrom about 0.1% to about 20% of a metal selected from the group made up of Pt, Rh, Pd, Ru, Ir and Au, and mixtures thereof.Applications are in the catalytic converter industry.

Abstract: The invention relates to a process for the production of hydrogen by steam reforming of methanol, in which water and methanol are reacted (4), under relatively high pressure, over a suitable catalyst. The gases emitted from the reaction are contacted (10), after condensation (7) under relatively high pressure, with an adsorption agent, such that the byproducts of the reaction are adsorbed and a hydrogen-rich gas is liberated (11). Also, byproducts which are recycled to the steam reforming reactor (4), are periodically desorbed under relatively low pressure at along with a fraction of the hydrogen present in the adsorption zone (10), after being submitted to recompression (13) and removal (14), under relatively high pressure, of at least a portion of carbon the dioxide, the desorbed gas fraction is recycled to the steam reforming reactor.