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公开(公告)号：EP4365333A1
公开(公告)日：2024-05-08
申请号：EP22832482.8
申请日：2022-03-16
摘要： Provided is a method for improving efficiency of heat transmission that enables improving the efficiency of heat transmission by steam in a steam system at a pH of less than 7. A method for improving the efficiency of heat transmission by steam, wherein, in a step of introducing steam into a heat exchanger to heat an object to be heated or a step of contacting the steam with a cooling body to liquefy the steam, a sarcosine compound is allowed to be present in the steam system at a pH of less than 7. As the sarcosine compound, a long-chain sarcosine compound represented by the following formula (I) is preferable. R1C(=O)-N(CH3)-(CH2)n-COOR2 ... (I) In formula (I), R1 is an unsaturated or saturated linear or branched hydrocarbon group having 7 to 24 carbon atoms, n is an integer of 0 to 2, and R2 is a hydrogen atom or a salt-forming group.
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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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