Methanol Casale Sa

Casale Sa

Ammonia Casale Sa

Urea Casale Sa

Tuttle Prilling Systems

Methonal Casale S.a.

Amonia Casale S.a.

Ermanno Filippi

Enrico Rizzi

Mirco Tarozzo

Giorgio Pagani

Umberto Zardi

Federico Zardi

Andrea Scotto

Luca Zanichelli

Marco Badano

Simone Gamba

Luca Redaelli

Fabiano Montini

Luca Bianchi

Gabriele Di Carlo

Keith A Clayton

Gabriele Germani

Micro Tarozzo

Donald Malcolm Snyder

Matteo Masanti

Gianfranco Bedetti

Emmanno Filippi

A catalytic bed for a chemical reactor, said catalytic bed having an annular-cylindrical geometry and comprising at least one collector made with a gas-permeable cylindrical wall, containing at least a first catalyst and a second catalyst, wherein the second catalyst has a finer particle size than the first catalyst, and wherein the first catalyst forms a layer of catalyst adjacent to and in contact with said collector.

Reactor with a catalytic bed

Radial or axial-radial flow catalytic chemical reactor comprising a cylindrical shell and at least one catalytic bed and comprising a plurality of perforated tubes, said tubes having an open end communicating with an inlet of a gaseous flow of reagents in the reactor, said tubes being provided with a plurality of holes on their side surface, said tubes being arranged around the catalytic bed so as to form an outer wall which bounds the catalytic bed and which distributes the reagents inside said bed; each of said tubes being formed by means of longitudinal or helical butt welding of a perforated strip.

Walls for catalytic beds of radial- or axial-flow reactors

Combined apparatus () for the synthesis of urea from ammonia and carbon dioxide, comprising an internal wall () which delimits two coaxial zones () inside the apparatus, operating respectively as reaction () and condensation () zones, and optionally also comprising a stripping zone and/or a scrubber integrated in the same apparatus.

Combined apparatus for the synthesis of urea

Axial reactor for exothermic or endothermic chemical reactions, comprising at least a first catalytic bed and a second catalytic bed operating in series and at least one heat exchanger between the two catalytic beds, wherein the first catalytic bed has a collector bottom having a box-like structure with flat and parallel walls, which are gas-permeable, and a plurality of parallel channels defined between the walls, wherein a first series of said channels collects the gaseous flow exiting the catalytic bed and passing through the first wall, said gaseous flow is directed towards the heat exchanger, and the flow exiting the exchanger is directed towards the second catalytic bed via a second series of said channels of the collector bottom.

Chemical reactor with adiabatic catalytic beds and axial flow

Shell-and-tube equipment includes baffles supporting the tubes, each baffle having seats for receiving the tubes shaped so as to receive one or more tubes in at least one free play condition and in a locking condition; each baffle is displaceable with respect to the tube bundle between an assembly position and a working position; in the assembly position the tubes can be received by the baffles in the free play condition while in the working position the tubes are locked.

Shell-and-tube equipment with antivibration baffles and related assembling method

Tube-bundle heat exchange unit () for internals of heat exchangers or reactors, comprising: at least one tube bundle (); a plurality of baffles () associated with said tube bundle and defining through-openings according to a predefined arrangement, each opening being passed through by one of more tubes of the tube bundle, and a shell () which surrounds said tube bundle and said baffles, wherein the assembly of the tube bundle and the shell can be disassembled and the shell is structurally collaborating with the tube bundle through said baffles.

Tube heat exchange unit for internals of heat exchangers reactors

Axial-radial flow reactor comprising a catalytic bed () of a hollow cylindrical shape, having a vertical axis (), a base (), a radial gas inlet section (), an axial gas inlet section () and a radial gas outlet section (), wherein the catalytic bed () comprises: a first cylindrical annular region () containing a layer of a first catalyst (A) and a layer of a second catalyst (B), the layer of the first catalyst being above the layer of the second catalyst; a second cylindrical annular region () coaxial to the first annular region and containing only the first catalyst (A).

Axial-radial flow catalytic chemical reactor with two layers of catalyst

Process and respective reactor for urea or melamine synthesis, comprising sonication treatment of at least part of a reaction liquid mass or two-phase mixture contained inside said reactor.

Sonication in a urea or melamine synthesis process

Vertical reactor () for chemical reactions, comprising a tube heat exchanger () immersed in a catalytic bed (), wherein said tube exchanger () comprises a plurality of straight tube bundles () with respective tube plates for feeding () and collecting () the heat exchange fluid, and wherein the tube bundles and the respective tube plates are vertically staggered so as to allow access to the shell side.

Tube isothermal catalytic reactor

Catalytic chemical reactor comprising a perforated wall () adjacent to a supporting wall of the reactor or of a catalytic cartridge contained in the reactor, wherein said perforated wall comprises a plurality of panels () and comprises first sectors () resting on the supporting wall and second sectors () spaced from said supporting wall defining a cavity (), and wherein means are provided for local securing said gas-permeable wall to said supporting wall, said securing means comprising: a plurality of support elements () fixed to the supporting wall () and passing through respective openings () of the first sectors () of the gas-permeable wall and a respective plurality of locking elements () which can be associated with the said support elements, the panels of the gas-permeable wall being gripped between said supporting wall and said locking elements.

Wall for catalytic beds of reactors and method for realizing the same

Shell and tube heat exchanger () comprising a first outer shell () and a tube bundle (), inlet and outlet interfaces communicating with the shell side and with the tube side for a first fluid and for a second fluid respectively, wherein the exchanger comprises a second shell () which is inside said first shell () and surrounds said tube bundle (); said second shell () comprises at least one releasable longitudinal joint () and a plurality of longitudinal sections connected by releasable joints; said second shell () delimits the shell side of the exchanger () around said tube bundle (), and further defines a flushing interspace () communicating with said shell side, said first fluid flows through said shell side along one or more longitudinal passages, and said first fluid and said second fluid are counter-current along said one or more longitudinal passages.

Shell and tube heat exchanger

Reactor for the synthesis of melamine from urea, in accordance with the high-pressure non-catalytic process, comprising: a vertical reactor body (), at least one inlet () for the urea melt, a set of heating elements (), and a central duct (), said set of heating elements () being arranged inside said central duct.

High-pressure reactor for the synthesis of melamine

Reactor () for catalytic chemical reactions, comprising: a partially open outer vessel () comprising a manhole () for accessing to the interior, and at least one internal wall () comprising a plurality of panels () assembled inside the vessel () so as to form said wall (); the panels are flexible and deformable so that they may be inserted through said manhole (), and the resulting wall () is not self-supporting and rests against a load-bearing wall () of the reactor.

Method for realizing internal walls of catalytic reactors

Horizontal reactor () for catalytic reactions, comprising an outer cylindrical shell (), a catalytic bed () and heat exchange plates () immersed in said catalytic bed, parallel to each other and supplied with a heat exchange fluid; said reactor comprises a container () for said catalytic bed () and said plates (), said container is extractable slidably from said shell, by means of at least one linear guide () extended longitudinally with respect to said shell ().

Horizontal catalytic reactor

A reactor and associated process for the high-pressure synthesis of melamine from urea, comprising a primary step of conversion of the urea into crude melamine inside a first chamber delimited by a shell inside a reactor body and a secondary step of stripping said crude melamine melt inside a second reaction chamber, which is coaxial with and situated outside said first chamber, inside the same reactor body.

Growing community of inventors

Casnate con Bernate, Italy

Enrico Rizzi