Patents by Inventor Fesia Lestari LAKSMANA
Fesia Lestari LAKSMANA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230202856Abstract: A process for converting magnesium chloride into magnesium oxide having the steps of: subjecting a magnesium chloride solution to a spray drying step in a spray-drying apparatus at a temperature of 300-475° C., resulting in the formation of a spray-dried product having 10-80 wt. % magnesium oxide and 20-90 wt. % of the total of magnesium hydroxychloride and magnesium chloride, subjecting the product of the spray drying step to a roasting step in a roaster at a temperature of 600-900° C. in the presence of water, resulting in the formation of a product having at least 98 wt. % of MgO, and less than 2 wt. % of the total of magnesium hydroxychloride and magnesium chloride, wherein the percentages of MgO, magnesium hydroxychloride and magnesium chloride, are calculated on the total of MgO, magnesium hydroxychloride and magnesium chloride.Type: ApplicationFiled: April 20, 2021Publication date: June 29, 2023Applicant: PURAC BIOCHEM B.V.Inventors: Fesia Lestari LAKSMANA, Raymon FREDIANSYAH
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Publication number: 20230059919Abstract: A process for removing lactic acid from an aqueous lactic acid-containing magnesium chloride solution, the weight ratio of magnesium chloride to lactic acid in the aqueous lactic acid-containing magnesium chloride solution being at least 1:1, the process including the steps of subjecting the aqueous lactic acid-containing magnesium chloride solution to an evaporation step, resulting in the formation of a slurry of MgC12.MgL2.4H2O in an aqueous magnesium chloride solution, then subjecting the slurry to a solid-liquid separation step, to separate the solid MgC12.MgL2.4H2O from the aqueous magnesium chloride solution, resulting in the removal of lactic acid from the aqueous lactic acid-containing magnesium chloride solution in the form of MgC12.MgL2.4H2O. The process makes it possible to efficiently remove lactic acid from aqueous lactic acid-containing magnesium chloride solutions, resulting in magnesium chloride solutions with a low lactic acid content which can be further processed as desired.Type: ApplicationFiled: January 15, 2021Publication date: February 23, 2023Applicant: PURAC BIOCHEM B.V.Inventors: Jan VAN KRIEKEN, Fesia Lestari LAKSMANA
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Publication number: 20220235383Abstract: A method for conversion of magnesium chloride into magnesium oxide and HCl includes the steps of providing a magnesium chloride compound to a thermohydrolysis reactor, the reactor being at a temperature of at least 300° C., withdrawing MgO from the thermohydrolysis reactor in solid form, and withdrawing an HCl containing gas stream from the thermohydrolysis reactor. The magnesium chloride compound provided to the thermohydrolysis reactor may be a solid magnesium chloride compound which comprises at least 60 wt. % of MgCl2.4H2O.Type: ApplicationFiled: April 11, 2022Publication date: July 28, 2022Applicant: PURAC BIOCHEM BVInventors: André Banier De Haan, Jeroen Bokhove, Fesia Lestari Laksmana
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Patent number: 11326189Abstract: A method for conversion of magnesium chloride into magnesium oxide and HCl includes the steps of providing a magnesium chloride compound to a thermohydrolysis reactor, the reactor being at a temperature of at least 300° C., withdrawing MgO from the thermohydrolysis reactor in solid form, and withdrawing an HCl containing gas stream from the thermohydrolysis reactor. The magnesium chloride compound provided to the thermohydrolysis reactor may be a solid magnesium chloride compound which comprises at least 60 wt. % of MgCl2.4H2O.Type: GrantFiled: August 13, 2020Date of Patent: May 10, 2022Assignee: PURAC BIOCHEM BVInventors: André Banier De Haan, Jeroen Bokhove, Fesia Lestari Laksmana
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Patent number: 11326188Abstract: A method for conversion of magnesium chloride into magnesium oxide and HCl includes the steps of providing a magnesium chloride compound to a thermohydrolysis reactor, the reactor being at a temperature of at least 300° C., withdrawing MgO from the thermohydrolysis reactor in solid form, and withdrawing an HCl containing gas stream from the thermohydrolysis reactor. The magnesium chloride compound provided to the thermohydrolysis reactor may be a solid magnesium chloride compound which comprises at least 60 wt. % of MgCl2.4H2O.Type: GrantFiled: October 2, 2019Date of Patent: May 10, 2022Assignee: PURAC BIOCHEM BVInventors: André Banier De Haan, Jeroen Bokhove, Fesia Lestari Laksmana
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Patent number: 11261467Abstract: A method for conversion of magnesium chloride into magnesium oxide and HCl, comprising the steps of providing a magnesium chloride compound to a thermohydrolysis reactor, the reactor being at a temperature of at least 300° C., withdrawing MgO from the thermohydrolysis reactor in solid form, and withdrawing a HCl containing gas stream from the thermohydrolysis reactor, wherein the magnesium chloride compound provided to the thermohydrolysis reactor is a solid magnesium chloride compound which comprises at least 50 wt. % of MgCl2.4H2O. The process accordingly is fast and can be operated in a manner which is efficient both as regards apparatus and energy. It can also be integrated in a process for converting a magnesium chloride solution.Type: GrantFiled: March 30, 2015Date of Patent: March 1, 2022Assignee: PURAC BIOCHEM B.V.Inventors: André Banier De Haan, Jeroen Bokhove, Fesia Lestari Laksmana
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Publication number: 20200370074Abstract: A method for conversion of magnesium chloride into magnesium oxide and HCl includes the steps of providing a magnesium chloride compound to a thermohydrolysis reactor, the reactor being at a temperature of at least 300° C., withdrawing MgO from the thermohydrolysis reactor in solid form, and withdrawing an HCl containing gas stream from the thermohydrolysis reactor. The magnesium chloride compound provided to the thermohydrolysis reactor may be a solid magnesium chloride compound which comprises at least 60 wt. % of MgCl2.4H2O.Type: ApplicationFiled: August 13, 2020Publication date: November 26, 2020Applicant: PURAC BIOCHEM BVInventors: André Banier DE HAAN, Jeroen BOKHOVE, Fesia Lestari LAKSMANA
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Publication number: 20200032300Abstract: A method for conversion of magnesium chloride into magnesium oxide and HCl includes the steps of providing a magnesium chloride compound to a thermohydrolysis reactor, the reactor being at a temperature of at least 300° C., withdrawing MgO from the thermohydrolysis reactor in solid form, and withdrawing an HCl containing gas stream from the thermohydrolysis reactor. The magnesium chloride compound provided to the thermohydrolysis reactor may be a solid magnesium chloride compound which comprises at least 60 wt. % of MgCl2.4H2O.Type: ApplicationFiled: October 2, 2019Publication date: January 30, 2020Applicant: PURAC BIOCHEM BVInventors: André Banier DE HAAN, Jeroen BOKHOVE, Fesia Lestari LAKSMANA
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Publication number: 20170121739Abstract: A method for conversion of magnesium chloride into magnesium oxide and HCl, comprising the steps of providing a magnesium chloride compound to a thermohydrolysis reactor, the reactor being at a temperature of at least 300° C., withdrawing MgO from the thermohydrolysis reactor in solid form, and withdrawing a HCl containing gas stream from the thermohydrolysis reactor, wherein the magnesium chloride compound provided to the thermohydrolysis reactor is a solid magnesium chloride compound which comprises at least 50 wt. % of MgCl2.4H2O. The process accordingly is fast and can be operated in a manner which is efficient both as regards apparatus and energy. It can also be integrated in a process for converting a magnesium chloride solution.Type: ApplicationFiled: March 30, 2015Publication date: May 4, 2017Applicant: PURAC BIOCHEM BVInventors: André Banier DE HAAN, Jeroen BOKHOVE, Fesia Lestari LAKSMANA