Patents Assigned to Casale SA
  • Publication number: 20190284052
    Abstract: Integrated process for the synthesis of ammonia and nitric acid, comprising a synthesis of nitric acid including the following steps: a) subjecting a stream of ammonia (10) to catalytic oxidation, obtaining a gaseous stream containing nitrogen oxides (13); b) subjecting said gaseous stream to a process of absorption of nitrogen oxides, providing nitric acid (16) and a tail gas (17) containing nitrogen and residual nitrogen oxides; c) subjecting at least a portion of said first tail gas (17) to a process of removal of nitrogen oxides, providing a nitrogen oxides-depleted tail gas (18), and comprising a synthesis of ammonia by catalytic conversion of a make-up gas (126, 226) comprising hydrogen and nitrogen in an ammonia synthesis loop, wherein at least a portion (18b, 18d, 21) of said second tail gas is used as nitrogen source for obtaining said make-up gas (126, 226).
    Type: Application
    Filed: June 27, 2017
    Publication date: September 19, 2019
    Applicant: CASALE SA
    Inventors: Raffaele OSTUNI, Jean François GRANGER, Giada FRANCESCHIN, Pierdomenico BIASI
  • Patent number: 10413878
    Abstract: Vertical reactor (1) for chemical reactions, comprising a tube heat exchanger (6) immersed in a catalytic bed (5), wherein said tube exchanger (6) comprises a plurality of straight tube bundles (6.1, 6.2) with respective tube plates for feeding (9.1, 9.2) and collecting (10.1, 10.2) 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.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: September 17, 2019
    Assignee: Casale SA
    Inventor: Enrico Rizzi
  • Patent number: 10406495
    Abstract: Catalytic chemical reactor comprising a perforated wall (6) 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 (7) and comprises first sectors (9) resting on the supporting wall and second sectors (10) spaced from said supporting wall defining a cavity (11), 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 (13) fixed to the supporting wall (4) and passing through respective openings (15) of the first sectors (9) of the gas-permeable wall and a respective plurality of locking elements (14) 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.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: September 10, 2019
    Assignee: Casale SA
    Inventor: Enrico Rizzi
  • Publication number: 20190262859
    Abstract: A fluid bed granulation process and apparatus, wherein a suitable fluid bed of a particulate material is maintained in a granulator fed by an input flow comprising a growth liquid and by a flow of seeds adapted to promote the granulation, and wherein a part of said input flow is taken upstream the feeding of the fluid bed, and used in a seeds generator, to produce the seeds for the fluid bed.
    Type: Application
    Filed: May 8, 2019
    Publication date: August 29, 2019
    Applicant: Casale SA
    Inventor: Federico Zardi
  • Patent number: 10386120
    Abstract: Shell and tube heat exchanger (1) comprising a first outer shell (2) and a tube bundle (3), 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 (4) which is inside said first shell (2) and surrounds said tube bundle (3); said second shell (4) comprises at least one releasable longitudinal joint (32) and a plurality of longitudinal sections connected by releasable joints; said second shell (4) delimits the shell side of the exchanger (1) around said tube bundle (3), and further defines a flushing interspace (5) 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.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: August 20, 2019
    Assignee: Casale SA
    Inventor: Enrico Rizzi
  • Publication number: 20190209990
    Abstract: Catalytic chemical reactor comprising a perforated wall (6) 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 (7) and comprises first sectors (9) resting on the supporting wall and second sectors (10) spaced from said supporting wall defining a cavity (11), 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 (13) fixed to the supporting wall (4) and passing through respective openings (15) of the first sectors (9) of the gas-permeable wall and a respective plurality of locking elements (14) 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.
    Type: Application
    Filed: April 20, 2017
    Publication date: July 11, 2019
    Applicant: Casale SA
    Inventor: Enrico RIZZI
  • Patent number: 10336623
    Abstract: Method for revamping a multi-bed ammonia converter, wherein said converter comprises a plurality of adiabatic catalytic beds including a first catalytic bed and one or more further catalytic bed(s), said catalytic beds being arranged in series so that the effluent of a bed is further reacted in the subsequent bed; at least a first inter-bed heat exchanger arranged between said first catalytic bed and a second catalytic bed to cool the effluent of said first bed before admission into said second bed, and optionally further inter-bed heat exchanger(s) arranged between consecutive beds; said method involves the conversion of said first catalytic bed into an isothermal catalytic bed.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: July 2, 2019
    Assignee: Casale SA
    Inventor: Davide Carrara
  • Publication number: 20190152901
    Abstract: A process for producing ammonia and a derivative of ammonia from a natural gas feed comprising conversion of natural gas into a make-up synthesis gas; synthesis of ammonia; use of said ammonia to produce said derivative of ammonia, wherein a portion of the natural gas feed is used to fuel a gas turbine; power produced by said gas turbine is transferred to at least one power user of the process, such as a compressor; heat is recovered from exhaust gas of said gas turbine, and at least part of said heat is recovered as low-grade heat available at a temperature not greater than 200° C., to provide process heating to at least one thermal user of the process, such as CO2 removal unit or absorption chiller; a corresponding plant and method of modernization are also disclosed.
    Type: Application
    Filed: January 18, 2019
    Publication date: May 23, 2019
    Applicant: Casale SA
    Inventors: Raffaele Ostuni, Geoffrey Frederick Skinner
  • Publication number: 20190152928
    Abstract: A process for the purification of a melamine melt (5) containing melamine and by-products, comprising the steps of: (a1) quenching of said melamine melt; (a2) decomposition of by-products with alkali, providing an alkaline aqueous solution of melamine (26); (b) stripping of said alkaline aqueous solution of melamine (26); (c) crystallization of melamine with a first alkali-containing solution (6b) and separation of solid melamine (7) from a mother liquor (8); (d) treatment of said mother liquor, providing a waste water stream (11) containing carbonates; (e) decomposition of at least part of the carbonates contained in said waste water stream (11) into carbon dioxide and alkali, providing a second alkali-containing aqueous solution (30); (f) recycle of at least part of said alkali-containing aqueous solution (30) to at least one of said steps (a1), (a2) and (c).
    Type: Application
    Filed: June 21, 2017
    Publication date: May 23, 2019
    Applicant: Casale SA
    Inventors: Andrea Scotto, Simone Gamba
  • Patent number: 10287174
    Abstract: A method for revamping a front-end of an ammonia plant, said front-end comprising a reforming section (1, 2) with air-fired secondary reformer or autothermal reformer (2), a treatment section (3) of the effluent from said reforming section, and an air feed compressor (6), wherein an O2-containing stream (8) is directed to said reforming section (2) for use as oxidant, at least one nitrogen stream (9) is introduced at a suitable location of the front-end, to provide a desired molar ratio between hydrogen and nitrogen in the product gas, and at least part of said nitrogen stream (9) is compressed via said feed compressor (6).
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: May 14, 2019
    Assignee: Casale SA
    Inventors: Ermanno Filippi, Raffaele Ostuni
  • Publication number: 20190133138
    Abstract: In a method for preparing granules containing filamentary fungi, a filamentary fungi culture is mixed with at least one modified starch and a starchy flour, then fillers and possible nutrients are added to the obtained product, obtaining a paste that is subsequently subjected to granulation and drying.
    Type: Application
    Filed: December 27, 2018
    Publication date: May 9, 2019
    Applicant: Casale SA
    Inventor: Elisabeth Panchaud-Mirabel
  • Publication number: 20190137098
    Abstract: A method for the control of nitrogen oxides content in the combustion fumes of a thermal power plant is disclosed; the method comprises the on-site production of ammonia by the steps of: electrolysis of water as a source of hydrogen; separation of air as a source of nitrogen, formation of a make-up gas and synthesis of ammonia in a suitable synthesis loop; said on-site produced ammonia, or a solution thereof, is used for a process of reduction of nitrogen oxides in the combustion fumes.
    Type: Application
    Filed: December 21, 2018
    Publication date: May 9, 2019
    Applicant: Casale SA
    Inventors: Raffaele OSTUNI, Federico ZARDI
  • Patent number: 10273155
    Abstract: A process and a related equipment for making ammonia make-up synthesis gas are disclosed, where: a hydrocarbon feedstock is reformed obtaining a raw ammonia make-up syngas stream; said raw syngas is purified in a cryogenic purification section refrigerated by a nitrogen-rich stream produced in an air separation unit; the nitrogen-rich stream at output of said cryogenic section is further used for adjusting the hydrogen/nitrogen ratio of the purified make-up syngas; an oxygen-rich stream is also produced in said air separation unit and is fed to the reforming section.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: April 30, 2019
    Assignee: Casale SA
    Inventors: Ermanno Filippi, Geoffrey Frederick Skinner
  • Patent number: 10209191
    Abstract: The invention discloses the use of Raman spectroscopy to analyze one or more process streams (5) of a urea synthesis production plant, where urea is synthesised from ammonia and carbon dioxide at high pressure (100-300 bar) and high temperature (50-250° C.). The radiation generated by the Raman scattering is analyzed to determine the concentration of components such as urea, ammonia and carbon dioxide in the process streams (5). A logic system implemented in a plant control unit (1) generates signals to target plant actuators to optimize the operation.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: February 19, 2019
    Assignee: Casale SA
    Inventor: Luca Rugnone
  • Patent number: 10202336
    Abstract: Plant for the synthesis of urea, comprising: a synthesis section comprising at least one reactor, a compressor for supplying CO2 to said synthesis section, a gas turbine for the operation of said CO2 compressor and a heat recovery steam generator; the heat source of said heat recovery steam generator consists of the exhaust gases of said gas turbine, and at least one steam flow produced by said heat recovery steam generator is used as heat source for at least one component of said urea plant.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: February 12, 2019
    Assignee: Casale SA
    Inventor: Andrea Scotto
  • Publication number: 20190039892
    Abstract: A method for the production of nitric acid, comprising a step of oxidation of ammonia in the presence of a catalyst, comprising a step of monitoring the temperature of said catalyst by at least one contactless infrared sensor.
    Type: Application
    Filed: September 7, 2016
    Publication date: February 7, 2019
    Applicant: Casale SA
    Inventor: Jean François GRANGER
  • Publication number: 20190030479
    Abstract: A temperature swing adsorption (TSA) process for removing a target component from a gaseous mixture (111), said process being carried out in a plurality of reactors (101, 102, 103), wherein each reactor (101) performs the following steps: an adsorption step (a) wherein an input stream (111) of said gaseous mixture is contacted with a solid adsorbent selective for said target component, producing a first waste stream (112) depleted of the target component; a heating step (b) for regeneration of the loaded adsorbent providing a first output stream (115) containing the target component; a cooling step (c) of the regenerated adsorbent, said TSA process also comprising: i) a pre-cooling step (b1) before said cooling step (c), wherein the regenerated adsorbent is contacted with a waste stream (137) which is produced by the adsorption step (a) of another reactor (103) and a second output stream (116) of the target component is produced; ii) a pre-heating step (a1) after said adsorption step (a) and before said heati
    Type: Application
    Filed: March 7, 2017
    Publication date: January 31, 2019
    Applicant: Casale SA
    Inventors: Lisa Joss, Matteo Gazzani, Marco Mazzotti
  • Publication number: 20190023565
    Abstract: A process for producing ammonia synthesis gas from a hydrocarbon-containing feedstock, with steps of primary reforming, secondary reforming with an oxidant stream, and further treatment of the synthesis gas including shift, removal of carbon dioxide and methanation, wherein the synthesis gas delivered by secondary reforming is subject to a medium-temperature shift (MTS) at a temperature between 200 and 350.degree. C., and primary reforming is operated with a steam-to-carbon ratio lower than 2. A corresponding method for revamping an ammonia plant is disclosed, where an existing HTS reactor is modified to operate at medium temperature, or replaced with a new MTS reactor, and the steam-to-carbon ratio in the primary reformer is lowered to a value in the range 1-5-2, thus reducing inert steam in the flow rate trough the equipments of the front-end.
    Type: Application
    Filed: September 26, 2018
    Publication date: January 24, 2019
    Applicant: Casale SA
    Inventors: Ermanno Filippi, Francesco Baratto, Sergio Panza, Raffaele Ostuni
  • Patent number: 10183910
    Abstract: A process for producing ammonia and a derivative of ammonia from a natural gas feed comprising conversion of natural gas into a make-up synthesis gas; synthesis of ammonia; use of said ammonia to produce said derivative of ammonia, wherein a portion of the natural gas feed is used to fuel a gas turbine; power produced by said gas turbine is transferred to at least one power user of the process, such as a compressor; heat is recovered from exhaust gas of said gas turbine, and at least part of said heat is recovered as low-grade heat available at a temperature not greater than 200° C., to provide process heating to at least one thermal user of the process, such as CO2 removal unit or absorption chiller; a corresponding plant and method of modernization are also disclosed.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: January 22, 2019
    Assignee: Casale SA
    Inventors: Raffaele Ostuni, Geoffrey Frederick Skinner
  • Publication number: 20190009237
    Abstract: Vertical reactor (1) for chemical reactions, comprising a tube heat exchanger (6) immersed in a catalytic bed (5), wherein said tube exchanger (6) comprises a plurality of straight tube bundles (6.1, 6.2) with respective tube plates for feeding (9.1, 9.2) and collecting (10.1, 10.2) 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.
    Type: Application
    Filed: July 7, 2016
    Publication date: January 10, 2019
    Applicant: Casale SA
    Inventor: Enrico Rizzi