Corrosion Characteristic and Anticorrosion Measures for Heat Supply System in a Thermal Power Plant at Baotou

Q4 Chemical Engineering

腐蚀科学与防护技术 Pub Date : 2014-01-23 DOI:10.11903/1002.6495.2013.013

Lirong Chen, Jingjing Zhang

引用次数: 0

Abstract

The corrosion of the hot water supply system in a thermal power plant in Baotou was analyzed.Results showed that corrosion of the inner surface of pipe was oxygen corrosion,the main influencing factor were DO(dissolved oxygen) and pH value.In order to solve the corrosion problem, a new compound corrosion inhibitor with Sodium erythorbate as the main component was proposed. Due to synergistic effect exists amongthe components of the compound ihibitor,therefore, the inhibitor can effectively enhance the resistance of the steel pipesto the corrosive softened waterin the system. The corrosion rate of carbon steel may be lowered to only 0.0303 mm/a with a dose of 150 mg/L inhibitor for the soften water with pH 10.

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包头某火电厂供热系统腐蚀特点及防腐措施

对包头某火电厂热水供应系统的腐蚀进行了分析。结果表明:管道内表面腐蚀主要为氧腐蚀，影响腐蚀的主要因素是溶解氧(DO)和pH值;为了解决腐蚀问题，提出了一种以赤藓酸钠为主要成分的新型复合缓蚀剂。由于复合缓蚀剂各组分之间存在协同作用，因此，该缓蚀剂可有效增强系统中钢管对腐蚀性软化水的耐腐蚀性。在pH值为10的软化水中，当缓蚀剂用量为150 mg/L时，碳钢的腐蚀速率仅为0.0303 mm/a。

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

腐蚀科学与防护技术 Chemical Engineering-Chemical Engineering (all)

CiteScore

0.60

自引率

0.00%

发文量

2399

期刊介绍： Corrosion Science and Protection Technology is approved by the General Administration of Press and Publication of the State Council, the Chinese Academy of Sciences, the Chinese Academy of Sciences Institute of Metals organized by the domestic and international public circulation of national periodicals metal surface treatment academic journals. The journal is a professional and technical publication. It reports the scientific and technological achievements in the field of metal corrosion and protection, and publishes research reports, reviews, technical reports, research briefs, failure analysis, experience exchange, etc. The readers are engaged in the field of metal corrosion and protection. The target readers are scientific and technological personnel engaged in metal corrosion and protection and teachers and students of related professional colleges and universities. Corrosion Science and Protection Technology is indexed in CSCD, CSTPCD, CA,MA,SA and other authoritative databases.