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公开(公告)号：US20220204352A1
公开(公告)日：2022-06-30
申请号：US17602407
申请日：2019-08-12
发明人： Changjun Yu , Qi Wang
IPC分类号： C01B33/193
摘要： Provided is a system and a method for preparing ultrafine silica by leaching silicate ore using hydrogen chloride gas, comprising an ore raw material feeding device, an ejector, a stirring tank and a liquid-solid separation device. A circulated material outlet of a stirred tank is connected with a liquid inlet of an ejector through a circulation pipe; a liquid outlet of the ejector is connected with a circulated material inlet of the stirred tank; a material outlet of a raw ore feeding apparatus is connected with the circulation pipe; and the circulated material outlet of the stirred tank is connected with a solid-liquid separation apparatus. Based on the system and method in the present disclosure, an industrially feasible solution for preparing silica by continuously leaching a silicate ore is provided. The dissolution efficiency of ores and the utilization of hydrochloric acid are greatly increased.
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公开(公告)号：US20170182458A1
公开(公告)日：2017-06-29
申请号：US15276218
申请日：2016-09-26
发明人： Guoqiang Jiang , Jiantao Zhang , Changjun Yu , Haichuan Ding
CPC分类号： B01D53/62 , B01D53/1475 , B01D53/1493 , B01D53/18 , B01D53/80 , B01D2251/402 , B01D2251/404 , B01D2251/604 , B01D2251/608 , B01D2251/80 , B01D2252/20484 , B01D2252/20489 , B01D2257/504 , B01D2258/0283 , Y02C10/04 , Y02C10/06
摘要： The present invention relates to an apparatus for absorbing and mineralizing carbon dioxide comprising a reactor and a three-phase separator, in which said reactor comprises a tower body and a draft tube disposed inside the tower body, a liquid inlet pipe and a gas intake pipe being disposed on the tower body, the outlet ends of the liquid inlet pipe and the gas intake pipe both being located inside the draft tube; and the three-phase separator is disposed at the upper end of the reactor, and a method therefor. The arrangement of draft tube inside the reactor of the present invention, enhances gas-liquid-solid mixing state because of the flow with airlift loop flow inside the reactor, accelerates the dissolution rate of solid alkali solute and thus may increase absorption reaction rate and absorptivity; the integration of three-phase separator in the reaction apparatus may isolate carbonate by settling while reacting, reduce solid content of the solution, while reducing the circulation of water between absorption and separation units, improve process performance, reduce process energy consumption; carbonate particles generated can be controlled better, thus a higher settling efficiency can be obtained.
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3.发明申请公开(公告)号：US20220024762A1
公开(公告)日：2022-01-27
申请号：US17297081
申请日：2019-08-12
发明人： Changjun Yu , Qi Wang
摘要： Disclosed is a system and method for preparing hydrogen chloride and ammonia gas by using ammonium chloride. The system includes a decomposition reactor and at least one regeneration reactor, or includes a reactor that may serve as the decomposition reactor and the regeneration reactor; ammonium chloride in particle form is continuously added to the decomposition reactor via a solid particle feed apparatus, and reacts with molten-state ammonium hydrogen sulfate to generate hydrogen chloride gas and an intermediate material; the intermediate material is discharged to the regeneration reactor, and heated therein to decompose into ammonium hydrogen sulfate and ammonia gas; and the ammonium hydrogen sulfate is returned to the decomposition reactor for recycling. The present disclosure provides an industrial feasible implementation solution for continuous decomposition of ammonium chloride, lowers volatilization of ammonium chloride by continuously and slowly adding ammonium chloride in particle form, and improves utilization rate of the ammonium chloride.
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公开(公告)号：US12011702B2
公开(公告)日：2024-06-18
申请号：US17602407
申请日：2019-08-12
发明人： Changjun Yu , Qi Wang
IPC分类号： B01J19/18 , B01D11/02 , B01D21/26 , B01D36/00 , C01B33/193
CPC分类号： B01J19/1881 , B01D11/028 , B01D21/26 , B01D36/00 , C01B33/193 , B01J2219/00103 , B01J2219/00108 , C01P2004/61 , C01P2006/12
摘要： Provided is a system and a method for preparing ultrafine silica by leaching silicate ore using hydrogen chloride gas, comprising an ore raw material feeding device, an ejector, a stirring tank and a liquid-solid separation device. A circulated material outlet of a stirred tank is connected with a liquid inlet of an ejector through a circulation pipe; a liquid outlet of the ejector is connected with a circulated material inlet of the stirred tank; a material outlet of a raw ore feeding apparatus is connected with the circulation pipe; and the circulated material outlet of the stirred tank is connected with a solid-liquid separation apparatus. Based on the system and method in the present disclosure, an industrially feasible solution for preparing silica by continuously leaching a silicate ore is provided. The dissolution efficiency of ores and the utilization of hydrochloric acid are greatly increased.
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公开(公告)号：US20220098048A1
公开(公告)日：2022-03-31
申请号：US17426744
申请日：2019-08-12
发明人： Qi Wang , Changjun Yu
摘要： Disclosed are a preparation device and a preparation method of ammonia gas. The preparation device, prepares ammonia gas by reacting ammonium chloride with a particulate inorganic salt, includes one fluidized bed reactor with at least two fluidization chambers, in which one is a preheating chamber configured to preheat the particulate inorganic salt, and the other is a reaction chamber inside provided with at least one atomizing nozzle, the particulate inorganic salt forming a fluidized bed layer and reacting with an aqueous solution of ammonium chloride in the reaction chamber to generate the ammonia gas. The particulate inorganic salt can be sequentially flowed through a plurality of preheating chambers and reaction chambers under an impetus of a density difference of the particulate bed layers, finally achieving the required conversion rate.
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公开(公告)号：US10343113B2
公开(公告)日：2019-07-09
申请号：US15276218
申请日：2016-09-26
发明人： Guoqiang Jiang , Jiantao Zhang , Changjun Yu , Haichuan Ding
摘要： The present invention relates to an apparatus for absorbing and mineralizing carbon dioxide comprising a reactor and a three-phase separator, in which said reactor comprises a tower body and a draft tube disposed inside the tower body, a liquid inlet pipe and a gas intake pipe being disposed on the tower body, the outlet ends of the liquid inlet pipe and the gas intake pipe both being located inside the draft tube; and the three-phase separator is disposed at the upper end of the reactor, and a method therefor. The arrangement of draft tube inside the reactor of the present invention, enhances gas-liquid-solid mixing state because of the flow with airlift loop flow inside the reactor, accelerates the dissolution rate of solid alkali solute and thus may increase absorption reaction rate and absorptivity; the integration of three-phase separator in the reaction apparatus may isolate carbonate by settling while reacting, reduce solid content of the solution, while reducing the circulation of water between absorption and separation units, improve process performance, reduce process energy consumption; carbonate particles generated can be controlled better, thus a higher settling efficiency can be obtained.
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