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公开(公告)号：EP3686532A1
公开(公告)日：2020-07-29
申请号：EP18858092.2
申请日：2018-07-30
发明人： MORI, Shintaro , UJIIE, Shogo , LIN, Qian
摘要： A method for improving the heating efficiency of steam wherein a polyamine represented by the following general formula (1) is caused to be present in a steam system to be used for heating. R 1 -[NH-(CH 2 ) m ] n -NH 2 ··· (1) wherein R 1 represents a saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms; m is an integer of 1 to 8, and n is an integer of 1 to 7; and when n is 2 or more, a plurality of NH-(CH 2 ) m may be identical or different.
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公开(公告)号：EP3489387A1
公开(公告)日：2019-05-29
申请号：EP17824083.4
申请日：2017-06-27
发明人： LIN, Qian , SHIMURA, Yukimasa
摘要： The present invention provides a deoxidizing agent for boilers excellent in an oxygen removal effect under wide temperature conditions. The deoxidizing agent for boilers comprises (A) a hydroxylamine compound represented by the following general formula (I), (B) a heterocyclic compound having an N-substituted amino group, and (C) an aminophenol derivative represented by the following general formula (II),
wherein R 1 and R 2 each independently represent an alkyl group having 1 to 5 carbon atoms;
wherein R 3 to R 6 each independently represent any one of (a) the following general formula (III), (b) -OR 10 and (c) -R 11 , at least one of R 3 to R 6 representing (a), and R 10 and R 11 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;
wherein R 7 represents a single bond or an alkylene group having 1 to 4 carbon atoms, and R 8 and R 9 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
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