The high performance of diethylhydroxylamine in comparison with hydrazine for the removal of dissolved oxygen from boilers of power plant

IF 1 4区工程技术 Q4 CHEMISTRY, MULTIDISCIPLINARY

Iranian Journal of Chemistry & Chemical Engineering-international English Edition Pub Date : 2021-11-09 DOI:10.30492/IJCCE.2021.531402.4771

M. Sarmadi, Amirhossien Hasan Ahi, N. Esmaile, Mohammad Reza Gohari Darabkhani

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Abstract

In boilers and hot water heating systems, hydrazine is used as one of the powerful reducing agents for eliminating oxygen. Due to the toxicity and carcinogenicity of this material, a suitable replacement named diethylhydroxylamine (DEHA) can be used. DEHA has low acute toxicity and animal tests do not show mutagenic activity. In this study, hydrazine and DEHA as deoxygenation materials were used in boilers of Tarasht power plant in Iran (Tehran). In different months (May to November), deoxygenation was examined by these two substances. The oxygen removal value of DEHA was equal to hydrazine and sometimes far better than it. The rate of deoxygenation reaction of DEHA was 40 ppb in most months of the year, but the number of peaks in hydrazine was greater (2 peaks with 50 ppb and 1 peak with 60 ppb). Hydrazine analysis is time-consuming, as well as pollutes the environment. On the other hand, DEHA of tests were completed sooner. Also, DEHA as an economical material with low toxicity can be a good alternative to hydrazine in boilers. This material can prevent boiler corrosion by oxygen removal.

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比较了二乙基羟胺与肼对电厂锅炉中溶解氧的去除效果

在锅炉和热水供暖系统中，肼是一种强效的除氧还原剂。由于这种材料的毒性和致癌性，可以使用一种合适的替代品，称为二乙基羟胺(DEHA)。DEHA具有较低的急性毒性，动物试验未显示出致突变活性。本研究将肼和DEHA作为除氧材料应用于伊朗(德黑兰)Tarasht电厂锅炉。在不同的月份(5 - 11月)，用这两种物质检测脱氧情况。DEHA的除氧值与肼相当，有时甚至远优于肼。DEHA在大部分月份的脱氧反应速率为40 ppb，但联氨的脱氧反应峰数较多(50 ppb时有2个峰，60 ppb时有1个峰)。联氨分析耗时长，且污染环境。另一方面，DEHA的测试完成得更快。DEHA作为一种经济、低毒的材料，可以很好地替代肼在锅炉中的应用。这种材料可以防止锅炉因除氧而腐蚀。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Iranian Journal of Chemistry & Chemical Engineering-international English Edition CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL

CiteScore

2.80

自引率

22.20%

发文量

审稿时长

6-12 weeks

期刊介绍： The aim of the Iranian Journal of Chemistry and Chemical Engineering is to foster the growth of educational, scientific and Industrial Research activities among chemists and chemical engineers and to provide a medium for mutual communication and relations between Iranian academia and the industry on the one hand, and the world the scientific community on the other.