Patents Assigned to Casale SA
  • Patent number: 11027972
    Abstract: A synthesis process comprising steam reforming a gaseous hydrocarbon feedstock; exothermically reacting the resulting synthesis gas; removing heat from said exothermal reaction by producing steam; using said steam as heat input to the steam reforming, wherein the steam reforming comprises: a) forming a mixture containing steam and hydrocarbons by at least the step of adding a first stream of water to the hydrocarbon feedstock; b) heating said mixture by indirect heat exchange with synthesis gas; c) reforming said mixture after said heating step b).
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: June 8, 2021
    Assignee: CASALE SA
    Inventors: Pietro Moreo, Fabio Sassi
  • Patent number: 11020703
    Abstract: A temperature swing adsorption process for removing a target component from a gaseous mixture containing at least one side component besides the target component, said process being carried out in at least one reactor performing the following steps: an adsorption step (a), wherein an input stream of said gaseous mixture is contacted with a solid adsorbent selective for said target component, producing a first waste stream depleted of the target component; a heating step (b) for regeneration of the loaded adsorbent providing a first output stream containing the target component; a cooling step (c) of the regenerated adsorbent, said process also comprising: i) a preliminary heating step (a2) before said heating step (b), wherein a gaseous product containing said at least one side component is released from the adsorbent; ii) recycle of said gaseous product to a further adsorption step (a).
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: June 1, 2021
    Assignee: CASALE SA
    Inventors: Matteo Gazzani, Lisa Joss, Stefano Zanco, Marco Mazzotti
  • Publication number: 20210156560
    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: February 4, 2021
    Publication date: May 27, 2021
    Applicant: Casale SA
    Inventors: Raffaele OSTUNI, Federico ZARDI
  • Patent number: 10960374
    Abstract: 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.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: March 30, 2021
    Assignee: CASALE SA
    Inventor: Enrico Rizzi
  • Patent number: 10954187
    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 engine; power produced by said gas engine; is transferred to at least one power user of the process, such as a compressor; heat is re-covered from exhaust gas of said gas engine; and at least part of said heat may be 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: August 5, 2015
    Date of Patent: March 23, 2021
    Assignee: Casale SA
    Inventors: Geoffrey Frederick Skinner, Raffaele Ostuni
  • Patent number: 10954124
    Abstract: A process for producing ammonia make-up synthesis gas and a procedure for revamping a front-end of an ammonia plant for producing ammonia make-up synthesis gas are disclosed, wherein the make-up synthesis gas is produced by means of steam reforming of a hydrocarbon gaseous feedstock; said front-end includes a primary reformer, a secondary reformer, a shift conversion section, a CO2 removal section and optionally a methanation section; a shell-and-tube gas-heated reformer is installed after said secondary reformer, and a portion of the available feedstock is reformed in the tubes of said gas-heated reformer, and heat is provided to the shell side of said gas-heated reformer by at least a portion of product gas leaving the secondary reformer, possibly mixed with product gas leaving the tubes of said gas-heated reformer.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: March 23, 2021
    Assignee: Casale SA
    Inventors: Ermanno Filippi, Raffaele Ostuni
  • Publication number: 20210080186
    Abstract: Shell and tube apparatus (1) comprising: an outer shell (2); a first tube bundle (3) and a second tube bundle (4) coaxial with each other; a first inner shell (5) and a second inner shell (6); the first inner shell surrounds the first tube bundle and is arranged between said two tube bundles; the second inner shell surrounds the second tube bundle and is arranged in the space between said second tube bundle and the outer shell (2); the first tube bundle (3) operates as a preheater; the second tube bundle (4) operates as a boiler; the coaxial inner shells (5, 6) define a counterflow path for a hot fluid which passes through the shell side.
    Type: Application
    Filed: March 7, 2019
    Publication date: March 18, 2021
    Applicant: Casale SA
    Inventors: Cristiano Caselli, Luca Redaelli
  • Publication number: 20210060519
    Abstract: Plant for the synthesis of melamine starting from urea, wherein the stream of offgas containing NH3 and CO2 produced by the synthesis of melamine is converted into urea in a dedicated urea plant.
    Type: Application
    Filed: January 14, 2019
    Publication date: March 4, 2021
    Applicant: Casale SA
    Inventors: Andrea Scotto, Matteo Fumagalli
  • Patent number: 10927012
    Abstract: A process and system for removing ammonia from ammonia-containing purge gas of a urea plant, the process comprising: contacting said ammonia-containing purge gas with carbon dioxide at a low temperature, reaction of ammonia to form crystals of ammonium salts in a multiphase stream, and removal of the solid ammonium salts from the multiphase stream.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: February 23, 2021
    Assignee: Casale SA
    Inventor: Luca Rugnone
  • Patent number: 10874974
    Abstract: A temperature swing adsorption (TSA) process for removing a target component from a gaseous mixture, where the process is carried out in a plurality of reactors. Each reactor performs the following steps: an adsorption step wherein an input stream of said gaseous mixture is contacted with a solid adsorbent selective for said target component, producing a first waste stream depleted of the target component; a heating step for regeneration of the loaded adsorbent providing a first output stream containing the target component; and a cooling step of the regenerated adsorbent.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: December 29, 2020
    Assignee: Casale SA
    Inventors: Lisa Joss, Matteo Gazzani, Marco Mazzotti
  • Patent number: 10858313
    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: January 18, 2019
    Date of Patent: December 8, 2020
    Assignee: Casale SA
    Inventors: Raffaele Ostuni, Geoffrey Frederick Skinner
  • Patent number: 10816264
    Abstract: A process for purification of a current of hydrogen synthesis gas (100), particularly in the front-end of an ammonia plant, wherein said gas contains hydrogen and minor amounts of carbon monoxide, carbon dioxide, water and impurities, said process including steps of methanation (13) of said current (100), converting residual amounts of carbon monoxide and carbon dioxide to methane and water, dehydration (14) of the gas to remove water, and then a cryogenic purification (15) such as liquid nitrogen wash, to remove methane and Argon; a corresponding plant and method for revamping an ammonia plant are also disclosed.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: October 27, 2020
    Assignee: Casale SA
    Inventors: Ermanno Filippi, Raffaele Ostuni, Damiano Marzari Chiesa
  • Patent number: 10788273
    Abstract: 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.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: September 29, 2020
    Assignee: Casale SA
    Inventor: Enrico Rizzi
  • Patent number: 10781167
    Abstract: A shell-and-tube stripper for carbamate decomposition and ammonia recovery from a urea solution comprising a bundle of heated tubes, said tubes being fed with said urea solution and carbon dioxide as stripping medium, the urea solutions forming a liquid falling film on the internal surface of the tubes and the carbon dioxide forming a counter-current gaseous flow; said tubes comprise an external layer made of super austenitic or super duplex stainless steel and an internal layer made of zirconium, said internal layer reaching temperatures higher than 220° C.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: September 22, 2020
    Assignee: Casale SA
    Inventor: Luca Rugnone
  • Publication number: 20200290870
    Abstract: Process for manufacturing a hydrogen-containing synthesis gas from a natural gas feedstock, comprising the conversion of said natural gas into a raw product gas and purification of said product gas, the process having a heat input provided by combustion of a fuel; said process comprises a step of conversion of a carbonaceous feedstock, and at least a portion of said fuel is a gaseous fuel obtained by said step of conversion of said carbonaceous feedstock.
    Type: Application
    Filed: June 1, 2020
    Publication date: September 17, 2020
    Applicant: Casale SA
    Inventors: Raffaele OSTUNI, Geoffrey Frederick SKINNER, Ermanno FILIPPI
  • Publication number: 20200289982
    Abstract: A nitric acid production process, comprising tertiary abatement of N2O and NOx on a tail gas withdrawn from an absorption stage, said abatement including passing the tail gas over a sequence of a deN2O stage comprising a Fe-z catalyst and a deNOx stage comprising a V2O5-TiO2 catalyst in the presence of gaseous ammonia, wherein the tail gas at the inlet of deN2O stage and the tail gas at the inlet of deNOx stage have a temperature greater than 400° C.
    Type: Application
    Filed: October 3, 2018
    Publication date: September 17, 2020
    Applicant: Casale SA
    Inventors: Iacopo Cerea, Giada Franceschin, Raffaele Ostuni
  • Publication number: 20200290885
    Abstract: Process for the synthesis of ammonia comprising the steps of reforming of a hydrocarbon feedstock into a raw product gas, purification of said raw product gas obtaining a make-up synthesis gas, conversion of said synthesis gas into ammonia; said purification includes shift conversion of carbon monoxide into carbon dioxide and the reforming process requires a heat input which is at least partially recovered from at least one of said step of shift conversion, which is carried out with a peak temperature of at least 450° C., and said step of conversion into ammonia.
    Type: Application
    Filed: June 4, 2020
    Publication date: September 17, 2020
    Applicant: Casale SA
    Inventors: Raffaele Ostuni, Ermanno Filippi, Umberto Rossi
  • Publication number: 20200290869
    Abstract: Process for manufacturing a hydrogen-containing synthesis gas from a natural gas feedstock, comprising the conversion of said natural gas into a raw product gas and purification of said product gas, the process having a heat input provided by combustion of a fuel; said process comprises a step of conversion of a carbonaceous feedstock, and at least a portion of said fuel is a gaseous fuel obtained by said step of conversion of said carbonaceous feedstock.
    Type: Application
    Filed: May 29, 2020
    Publication date: September 17, 2020
    Applicant: Casale SA
    Inventors: Raffaele OSTUNI, Geoffrey Frederick SKINNER, Ermanno FILIPPI
  • Publication number: 20200223776
    Abstract: A process for the synthesis of methanol from an input stream of synthesis gas, comprising the following steps: subjecting a portion of said input stream as feed stream to an adiabatic reactive step, providing an effluent containing methanol and unreacted synthesis gas; quenching of said effluent with a further portion of said input stream, providing a quenched stream; subjecting said quenched stream to an isothermal reactive step, providing a methanol-containing product stream.
    Type: Application
    Filed: June 30, 2017
    Publication date: July 16, 2020
    Applicant: Casale SA
    Inventors: Pietro Moreo, Maddalena Lepri
  • Patent number: 10710893
    Abstract: Process for the synthesis of ammonia comprising the steps of reforming of a hydrocarbon feedstock into a raw product gas, purification of said raw product gas obtaining a make-up synthesis gas, conversion of said synthesis gas into ammonia; said purification includes shift conversion of carbon monoxide into carbon dioxide and the reforming process requires a heat input which is at least partially recovered from at least one of said step of shift conversion, which is carried out with a peak temperature of at least 450° C., and said step of conversion into ammonia.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: July 14, 2020
    Assignee: Casale SA
    Inventors: Raffaele Ostuni, Ermanno Filippi, Umberto Rossi