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公开(公告)号：EP3406762A1
公开(公告)日：2018-11-28
申请号：EP16895498.0
申请日：2016-10-31
发明人： KARAKI, Keisuke , KOIZUMI, Masakazu
CPC分类号： C10G75/02 , C10G21/16 , C10G21/20 , C10G2300/205 , C10G2300/4075 , C10G2400/30 , C23F11/14
摘要： In order to suppress corrosion of an extractor caused by corrosive ions contained in an aromatic compound extraction solvent of a circulation system, a method for reducing corrosive ions in an aromatic compound extraction solvent is provided, by which the corrosive ions in the aromatic compound extraction solvent are conveniently and efficiently reduced. A method for reducing corrosive ions in an aromatic compound extraction solvent in a circulation system where the aromatic compound extraction solvent circulates, the corrosive ions being at least one kind selected from the group consisting of chloride ions, sulfate ions, and sulfite ions, the method comprising: a step of forming a non-volatile salt by adding a corrosive ion scavenger to react the corrosive ions with the corrosive ion scavenger, and a step of removing the salt resulting from concentrating the solvent comprising the salt.
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公开(公告)号：EP3904489A1
公开(公告)日：2021-11-03
申请号：EP19904976.8
申请日：2019-12-17
发明人： KARAKI, Keisuke , MINAMI, Hiroaki , EMORI, Kenta
摘要： A method for eliminating pressure loss (pressure difference) caused by salt derived from impurities in raw materials in a distillation facility during operation without negative effect on the quality of products and production efficiency is provided. The method for eliminating occurrence of pressure difference caused by precipitation of salt in a distillation facility includes using a quaternary ammonium compound represented by the following formula [1] as a salt remover:
wherein R 1 , R 2 and R 3 each independently represent a hydrocarbon group having 1 to 4 carbon atoms, and n represents an integer of 1 to 10.-
3.发明公开
公开(公告)号：EP4074393A1
公开(公告)日：2022-10-19
申请号：EP20898041.7
申请日：2020-09-11
发明人： KARAKI, Keisuke , EMORI, Kenta , MINAMI, Hiroaki
摘要： Provide is a distillation tower management system, a distillation tower state analysis method, and a distillation tower management method that are capable of predicting abnormality in distillation towers before the abnormality becomes apparent and capable of taking preventive actions. The distillation tower management system includes a measurement unit 10 that is at least one selected from the group consisting of a pressure measurement unit 11, a temperature measurement unit 12 and a chlorine measurement unit 13, an operation data unit 20 for producing operation data containing measurement data measured with the measurement unit 10, an analysis unit 30 for analyzing the state of a distillation tower 103 from the operation data and producing analysis data regarding the state of the distillation tower 103, and a control unit 40 for producing, based on the analysis data, control data regarding a differential pressure-eliminating agent that is added to the distillation tower 103.
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