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公开(公告)号：US20230110976A1
公开(公告)日：2023-04-13
申请号：US17914321
申请日：2021-03-25
申请人： SOLUGEN, INC.
发明人： Jun Su An , Frederyk Ngantung
摘要： A method for precious metal extraction comprises contacting a precious metal-containing ore with an improved cyanide extraction agent under conditions suitable for the formation of a coated precious metal-containing ore where the extraction agent comprises (i) a cement and (ii) a cement retarder; and contacting the coated precious metal-containing ore with a cyanide solution to form soluble precious metal complexes. A composition for gold extraction comprising: (i) a cement (ii) a cement retarder and (iii) an inorganic cyanide salt.
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公开(公告)号：US20230093108A1
公开(公告)日：2023-03-23
申请号：US17904582
申请日：2021-02-19
申请人： STARFIRE ENERGY
摘要： Method and systems for desorbing NH3 from an NH3-adsorbent material by exposing the adsorbent material to microwave radiation are described. Also described are methods for increasing an NH3 cracker's NH3 utilization and reducing the chance of downstream process contamination. Also described are methods of producing high pressure, high purity H2 from NH3.
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公开(公告)号：US20230071223A1
公开(公告)日：2023-03-09
申请号：US17793807
申请日：2021-01-20
发明人： Kazuyuki ISHII , Kyoko ENOMOTO
摘要： The present invention is to provide a novel adsorbent which is low in cost, has versatility and high adsorption ability. Specifically, the present invention is to provide an adsorbent of a specific metal element containing a metal salt of a cyanometallic acid, a method for producing the same, and a method for removing the ion of the element that is the target of adsorption using such an adsorbent.
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公开(公告)号：US20230038918A1
公开(公告)日：2023-02-09
申请号：US17784069
申请日：2019-12-13
申请人： CHEMETICS INC.
发明人： Rene Dijkstra
IPC分类号： C05G1/00 , B01J19/24 , B01J8/06 , C01C1/04 , C01B17/765 , C01B17/54 , C01B21/04 , C05B11/08 , C05C3/00 , F25J3/04 , B01D53/14 , B01D53/18 , C02F1/16
摘要： Integrated plants and associated processes for producing ammonia and sulfuric acid have been developed comprising air separation and water electrolysis subsystems and which make surprisingly efficient use of the products from these subsystems (i.e. oxygen and nitrogen from the former and hydrogen and oxygen from the latter). The invention is particularly suitable for use as part of an integrated fertilizer production plant.
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公开(公告)号：US20230038100A1
公开(公告)日：2023-02-09
申请号：US17791287
申请日：2021-01-11
摘要： The present invention relates to a method for producing a double metal cyanide (DMC) catalyst, comprising the reaction of an aqueous solution of a cyanide-free metal salt, an aqueous solution of a metal cyanide salt, an organic complex ligand, optionally a complex-forming component to form a dispersion, the dispersion being produced using a mixing nozzle and a peroxide. The invention further relates to double metal cyanide (DMC) catalysts obtainable by means of the method according to the invention and to the use of DMC catalysts to produce polyoxyalkylene polyols.
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公开(公告)号：US11572340B2
公开(公告)日：2023-02-07
申请号：US16635099
申请日：2018-08-03
申请人： SAIPEM S.p.A.
IPC分类号： C07C273/04 , C01C1/04 , C07C273/10 , C07C273/16
摘要： A urea production process comprises a step of synthesis of urea by reaction of ammonia and carbon dioxide, where at least part of the carbon dioxide for the urea reaction synthesis is produced in an oxy-combustion process; the oxy-combustion process is specifically a flameless oxy-combustion process.
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公开(公告)号：US20230026882A1
公开(公告)日：2023-01-26
申请号：US17935189
申请日：2022-09-26
申请人： M.A.R.G., LLC
发明人： Scott Severson
摘要： Methods for producing a solid ammonium bicarbonate product that includes preparing an organic feedstock that contains at least one nitrogen compound by causing organic animal manure and/or organic food waste to undergo anaerobic digestion, removing solids from the organic feedstock to produce an organic liquid effluent that contains at least one of ammonium and ammonia, performing a distillation process on the organic liquid effluent to strip and concentrate a vapor mixture therefrom that contains ammonia, carbon dioxide, and water and cool the vapor mixture to produce a condensed solution containing ammonium bicarbonate and/or ammonium carbonate, contacting the condensed solution with carbon dioxide to cause an ammonium bicarbonate precipitate to form from the condensed solution, and performing an evaporation process on the ammonium bicarbonate precipitate to remove water therefrom and produce the dry, solid ammonium bicarbonate product.
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公开(公告)号：US20220388855A1
公开(公告)日：2022-12-08
申请号：US17826641
申请日：2022-05-27
发明人： Ibrahim Dincer , Ghassan Chehade , Osamah Siddiqui , Haris Ishaq
摘要： A containerized system for producing anhydrous ammonia from air, water and a power source, includes a containerized hydrogen production unit that produces hydrogen gas from a water source by low temperature electrolyser, high temperature electrolyser, battolyser or by other methods; a containerized nitrogen production unit comprising an onboard air compression and storage unit that produces and stores pressurized air, a pressure swing adsorption process or other methods that use regenerative molecule that does not need any maintenance, which intakes compressed air and produces nitrogen gas through a series of adsorption and desorption processes, or other such methods of producing nitrogen from air; a containerized ammonia production unit comprising a gas booster that increases the pressure of a mixture of the hydrogen gas and the nitrogen gas using the pressurized air; a multi-reactor assembly joint in series or in parallel; and a recycle loop that separates the ammonia from unreacted gases.
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公开(公告)号：US20220388854A1
公开(公告)日：2022-12-08
申请号：US17770148
申请日：2020-10-12
申请人： CASALE SA
发明人： Maurizio Rizzi
摘要： A process for synthesis of ammonia including generation of makeup gas in a frontend and conversion of said makeup gas in an ammonia synthesis loop including a circulator, a converter, a condensation section and a liquid ammonia separation section, including: when the loop operates at a partial load and a flow rate of makeup gas transferred from the front end to the synthesis loop is reduced, the loop is controlled by separating a gas stream from a converter feed line at a point upstream of the converter thus forming a bypass stream; reintroducing said bypass stream at the suction side of the circulator or at a point of the loop downstream of said separation section.
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公开(公告)号：US20220387964A1
公开(公告)日：2022-12-08
申请号：US17776047
申请日：2020-11-13
申请人： Miao Yu , Surya Padinjarekutt , Huazheng Li
发明人： Miao Yu , Surya Padinjarekutt , Huazheng Li
IPC分类号： B01J20/18 , B01J19/24 , B01J20/28 , B01J20/32 , C01C1/04 , B01D53/22 , B01D71/02 , B01D63/02
摘要： Ammonia is made in a system that includes a conversion reactor for performing a Haber-Bosch process. Effluent streams from the conversion reactor, which include an ammonia component and excess hydrogen and nitrogen reactants, are fed to a membrane separator that includes NaA zeolite membranes disposed on one or more hollow porous supports. The NaA zeolite membranes are highly selective for the ammonia component, allowing the ammonia to be collected from a lumen of the membranes as a product and enriching the excess hydrogen and nitrogen reactants for reuse in the conversion reactor. These systems and the methods of their use are effective to replace and/or modify the energy-intensive condensation/recycling steps in the traditional Haber-Bosch process used to condense NH3 from the exiting stream of the reactor. The selective removal of ammonia by high quality NaA membranes helps to shift the ammonia evolution reaction.
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