Jet Spouted Bed Type Reactor Device Having A Specific Profile For CVD

The invention relates to a jet spouted bed reactor, comprising a cylindrical area, a gas injection pipe at the base of the cylindrical area, and a transition area, connecting the upper end of the pipe to the base of the cylindrical area, this transition area having a convex profile in a plane extending through the axis (YY′) of flow of a fluid in the pipe. 1. Jet spouted bed reactor , comprising a cylindrical area , a gas injection pipe at the base of the cylindrical area , and a transition area , connecting the upper end of the pipe to the base of the cylindrical area , this transition area having a convex , or predominantly convex , profile in a plane extending through the axis (YY′) of flow of a fluid in the pipe.2. Jet spouted bed reactor according to claim 1 , in which the angle β between the axis of flow of a fluid in the pipe and the tangent to the convex claim 1 , or predominantly convex claim 1 , profile at the point where it joins the pipe is at least equal to 5° claim 1 , and claim 1 , preferably claim 1 , less than 45°.3. Jet spouted bed reactor according to the preceding claim claim 1 , the angle β being at least equal to 10° claim 1 , and claim 1 , preferably claim 1 , less than 35°.4. Jet spouted bed reactor according to claim 1 , the convex or predominantly convex profile having a point of inflexion claim 1 , and the angle θbetween claim 1 , on the one hand claim 1 , an axis perpendicular to the direction of flow of a fluid and extending through the base of the cylindrical part and claim 1 , on the other hand claim 1 , the tangent to the point of inflexion I of the convex profile claim 1 , being greater than 10°.5. Jet spouted bed reactor according to claim 1 , wherein the angle θbetween claim 1 , on the one hand claim 1 , an axis perpendicular to the direction of flow of a fluid and extending through the base of the cylindrical part and claim 1 , on the other hand claim 1 , a straight line extending through the end of the gas injection pipe and ...

Jet spouted bed type reactor device having a specific profile for CVD

The invention relates to a jet spouted bed reactor, comprising a cylindrical area, a gas injection pipe at the base of the cylindrical area, and a transition area, connecting the upper end of the pipe to the base of the cylindrical area, this transition area having a convex profile in a plane extending through the axis (YY′) of flow of a fluid in the pipe.

Composition filled with polyolefin and actinide powder

A composition filled with actinide powder, comprising an organic matrix and an actinide powder or a mixture of actinide powders, comprises at least: a plasticizer comprising an alkane whose longest radical chain comprises at least a few tens of carbon atoms and is in a volume content of between 20% and 70% of the total volume of the organic compounds alone; a binder comprising at least one polyolefinic polymer and which is in a volume content of between 20% and 50% of the total volume of the organic compounds alone; a dispersant comprising a carboxylic acid or salts thereof, the volume content of which is less than 10% of the total volume of the organic compounds alone; said actinide powder or said mixture of actinide powders represent between 40% and 65% of the volume of the filled matrix.

COMPOSITION FILLED WITH ACTINIDE POWDER AND AROMATIC POLYMER AND/OR PMMA

A composition filled with actinide powder, comprising an organic matrix and an actinide powder or a mixture of actinide powders, comprises at least: a plasticizer comprising an alkane whose longest radical chain comprises at least a few tens of carbon atoms and is in a volume content of between 20% and 70% of the total volume of the organic compounds alone; a binder comprising at least one aromatic polymer and/or polymethyl methacrylate and which is in a volume content of between 20% and 50% of the total volume of the organic compounds alone; a dispersant comprising a carboxylic acid or salts thereof, the volume content of which is less than 10% of the total volume of the organic compounds alone; said actinide powder or said mixture of actinide powders represent between 40% and 65% of the volume of the filled matrix. 1. A composition filled with actinide powder comprising an organic matrix and an actinide powder or a mixture of actinide powders , comprising:a plasticizer comprising an alkane whose longest radical chain comprises at least a few tens of carbon atoms and is in a volume content of between 20% and 70% of the total volume of the organic compounds alone;a binder comprising at least one aromatic polymer and/or polymethyl methacrylate capable of limiting the radiolysis effects and which is in a volume content of between 20% and 50% of the total volume of the organic compounds alone; anda dispersant comprising a carboxylic acid or salts thereof, the volume content of which is less than 10% of the total volume of the organic compounds alone;wherein said actinide powder or said mixture of actinide powders represent between 40% and 65% of the volume of the filled matrix.2. The composition filled with actinide powder as claimed in claim 1 , wherein the binder comprises polystyrene.3. The composition filled with actinide powder as claimed in claim 1 , wherein the binder comprises polystyrene and a polyolefin.4. The composition filled with actinide powder as ...

COMPOSITION FILLED WITH POLYOLEFIN AND ACTINIDE POWDER

A composition filled with actinide powder, comprising an organic matrix and an actinide powder or a mixture of actinide powders, comprises at least: a plasticizer comprising an alkane whose longest radical chain comprises at least a few tens of carbon atoms and is in a volume content of between 20% and 70% of the total volume of the organic compounds alone; a binder comprising at least one polyolefinic polymer and which is in a volume content of between 20% and 50% of the total volume of the organic compounds alone; a dispersant comprising a carboxylic acid or salts thereof, the volume content of which is less than 10% of the total volume of the organic compounds alone; said actinide powder or said mixture of actinide powders represent between 40% and 65% of the volume of the filled matrix. 1. A composition filled with actinide powder comprising an organic matrix and an actinide powder or a mixture of actinide powders , comprising:a plasticizer comprising an alkane whose longest radical chain comprises at least a few tens of carbon atoms and is in a volume content of between 20% and 70% of the total volume of the organic compounds alone;a binder comprising at least one polyolefinic polymer and which is in a volume content of between 20% and 50% of the total volume of the organic compounds alone; anda dispersant comprising a carboxylic acid or salts thereof, the volume content of which is less than 10% of the total volume of the organic compounds alone;wherein said actinide powder or said mixture of actinide powders represent between 40% and 65% of the volume of the filled matrix.2. The composition filled with actinide powder as claimed in claim 1 , wherein the polyolefinic polymer has a mean molar mass of at least 10 000 g/mol.3. The composition filled with actinide powder as claimed in claim 1 , wherein the polyolefinic polymer is polyethylene.4. The composition filled with actinide powder as claimed in claim 1 , wherein the polyolefinic polymer is polypropylene.5. ...

Dispositif a profil specifique de reacteur de type lit a jet pour depot par cvd

COMPOSITION CHARGED WITH ACTINIDE POWDER AND POLY-OLEFINIC

COMPOSITION CHARGED WITH ACTINIDE POWDER AND AROMATIC POLYMER AND / OR PMMA

L'invention concerne une composition chargée en poudre d'actinide comprenant une matrice organique et une poudre d'actinide ou un mélange de poudres d'actinides caractérisée en ce qu'elle comprend au moins : - un plastifiant comportant un alcane dont la plus longue chaîne radicalaire comporte au moins quelques dizaines d'atomes de carbone et de teneur volumique comprise entre 20 et 70% du volume total des composés organiques seuls ; - un liant comprenant au moins un polymère aromatique et/ou du polyméthacrylate de méthyle et de teneur volumique comprise entre 20 et 50 % du volume total des composés organiques seuls ; - un dispersant comprenant un acide carboxylique ou ses sels dont la teneur volumique est inférieure à 10% du volume total des composés organiques seuls ; - ladite poudre d'actinide ou ledit mélange de poudre d'actinides représentant entre 40% et 65% du volume de la matrice chargée. The invention relates to a charged actinide powder composition comprising an organic matrix and an actinide powder or a mixture of actinide powders characterized in that it comprises at least: a plasticizer comprising an alkane, the longest of which radical chain comprises at least a few tens of carbon atoms and a volume content of between 20 and 70% of the total volume of the organic compounds alone; a binder comprising at least one aromatic polymer and / or polymethyl methacrylate and with a volume content of between 20 and 50% of the total volume of organic compounds alone; a dispersant comprising a carboxylic acid or its salts whose volume content is less than 10% of the total volume of the organic compounds alone; said actinide powder or said mixture of actinide powder representing between 40% and 65% of the volume of the charged matrix.

COMPOSITION CHARGED WITH ACTINIDE POWDER AND POLY-OLEFINIC

L'invention a pour objet une composition chargée en poudre d'actinide comprenant une matrice organique et une poudre d'actinide ou un mélange de poudres d'actinides caractérisée en ce qu'elle comprend au moins : - un plastifiant comportant un alcane dont la plus longue chaîne radicalaire comporte au moins quelques dizaines d'atomes de carbone et de teneur volumique comprise entre 20 et 70% du volume total des composés organiques seuls ; - un liant comprenant au moins un polymère poly-oléfinique et de teneur volumique comprise entre 20% et 50% du volume total des composés organiques seuls ; - un dispersant comprenant un acide carboxylique ou ses sels dont la teneur volumique est inférieure à 10% du volume total des composés organiques seuls ; - ladite poudre d'actinide ou ledit mélange de poudre d'actinides représentant entre 40% et 65% du volume de la matrice chargée. The subject of the invention is a composition charged with actinide powder comprising an organic matrix and an actinide powder or a mixture of actinide powders, characterized in that it comprises at least: a plasticizer comprising an alkane whose the longest radical chain comprises at least a few tens of carbon atoms and a volume content of between 20 and 70% of the total volume of the organic compounds alone; a binder comprising at least one polyolefinic polymer and having a volume content of between 20% and 50% of the total volume of organic compounds alone; a dispersant comprising a carboxylic acid or its salts whose volume content is less than 10% of the total volume of the organic compounds alone; said actinide powder or said mixture of actinide powder representing between 40% and 65% of the volume of the charged matrix.

SPECIFIC REACTOR TYPE REACTOR DEVICE WITH JET TYPE FOR CVD DEPOSITION

L'invention concerne un réacteur à lit fluidisé, comportant une zone cylindrique (12), un conduit (18) d'injection de gaz à la base de la zone cylindrique, et une zone de transition, reliant l'extrémité supérieure du conduit (18) à la base de la zone cylindrique (12), cette zone de transition ayant un profil convexe dans un plan passant par l'axe (YY') d'écoulement d'un fluide dans le conduit (18).

COMPOSITION CHARGED WITH ACTINIDE POWDER AND AROMATIC POLYMER AND / OR PMMA

Fluidized bed reactor with specific shape

Composition filled with actinide powder and aromatic polymer and/or pmma

The invention relates to a composition filled with actinide powder, comprising an organic matrix and an actinide powder or a mixture of actinide powders. The composition is characterised in that it comprises at least: a plasticiser containing an alkane of which the longest radical chain comprises at least several dozen carbon atoms, representing between 20 and 70% of the total volume of the organic compounds alone; a binder comprising at least one aromatic polymer and/or polymethacrylate, representing between 20 and 50 % of the total volume of the organic compounds alone; and a dispersant comprising a carboxylic acid or the salts thereof and representing less than 10% of the total volume of the organic compounds alone. According to the invention, the actinide powder or mixture of actinide powders represents between 40 and 65% of the volume of the filled matrix.

Composition filled with actinide powder and aromatic polymer and/or pmma

The invention relates to a composition filled with actinide powder, comprising an organic matrix and an actinide powder or a mixture of actinide powders. The composition is characterised in that it comprises at least: a plasticiser containing an alkane of which the longest radical chain comprises at least several dozen carbon atoms, representing between 20 and 70% of the total volume of the organic compounds alone; a binder comprising at least one aromatic polymer and/or polymethacrylate, representing between 20 and 50 % of the total volume of the organic compounds alone; and a dispersant comprising a carboxylic acid or the salts thereof and representing less than 10% of the total volume of the organic compounds alone. According to the invention, the actinide powder or mixture of actinide powders represents between 40 and 65% of the volume of the filled matrix.

Composition filled with polyolefin and actinide powder

The invention relates to a composition filled with actinide powder, comprising an organic matrix and an actinide powder or a mixture of actinide powders. The composition is characterised in that it comprises at least: a plasticiser containing an alkane of which the longest radical chain comprises at least several dozen carbon atoms, representing between 20 and 70% of the total volume of the organic compounds alone; a binder comprising at least one polyolefin polymer, representing between 20 and 50% of the total volume of the organic compounds alone; and a dispersant comprising a carboxylic acid or the salts thereof and representing less than 10% of the total volume of the organic compounds alone. According to the invention, the actinide powder or mixture of actinide powders represents between 40 and 65% of the volume of the filled matrix.

Jet-spouted bed reactor having a specific profile

L' invention concerne un réacteur à lit à jet, comportant une zone cylindrique (12), un conduit (18) d'injection de gaz à la base de la zone cylindrique, et une zone de transition, reliant l'extrémité supérieure du conduit (18) à la base de la zone cylindrique (12), cette zone de transition ayant un profil convexe dans un plan passant par l'axe (YY') d'écoulement d'un fluide dans le conduit (18).