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10(HSC)耐湿硫化氢腐蚀换热管
11-29 | 钢管知识 | 关注:81 次

 10(HSC)耐湿硫化氢腐蚀换热管

10(HSC)Wet Hydrogen Sulfide Corrosion Resistant Heat Exchange Tube

 

  随着国民经济的发展,对石油产品需求量与日俱增,国内加工进口高硫原油的数量也逐年上升,加工高硫原油对设备带来低温、中温和高温腐蚀问题日渐严重,特别是低温硫化氢腐蚀属于材料的局部破坏,更加难以检测和预防。为此,2010年6月在中国石化集团股份公司科技开发部的大力支持下,由中石化洛阳工程有限公司为组长单位,中国钢研科技集团有限公司等成员单位,并联合管材制造厂成立了“耐湿硫化氢腐蚀换热管工程技术开发”课题组。

 

With the development of the national economy, the demand for petroleum products grow with the passage time, the number of domestic processing of imported high sulfur crude oil also increased year by year. Processing high sulfur crude oil brings low temperature, middle temperature and high temperature equipment corrosion problem which is increasingly serious, especially the local damage of low temperature corrosion of materials is more difficult to detect and prevent. Therefore, in June 2010 in the strong support of the Ministry of science and technology development of the Sinopec group company, by Sinopec Luoyang Engineering Co. Ltd. as the head of the unit, Chinese Gangyan Technology Group Co. Ltd. and other members of the unit, and the joint pipe manufacturing factory were set up the research group "wet H2S corrosion heat pipe engineering technology development".

 

优点 Advantage

具有低碳、超低硫磷、微合金化的纯净无缝钢管,通过添加稀土元素以改善材料的耐腐蚀性能;
具有优良的综合力学性能,尤其低温冲击韧性远高于一般碳素钢材料,且硬度值低;
晶粒细小且纯净度高。根据多次实验分析,该材料晶粒度均不粗于8级;非金属夹杂物总和小于4.0;
具有优良的抗硫化物应力开裂(SSCC)能力。根据如合肥通用所、国家石油钻采炼化设备质量监督检验中心等第三方检验报告,该材料开裂门槛应力远高于标准值要求;
具有优良的抗氢致开裂(HIC、SOHIC)能力。根据多次第三方A溶液检验分析,该材料裂纹长度率(CLR)、裂纹厚度率(CTR)和裂纹敏感率(CSR)皆为零;
具有优良的耐均匀腐蚀能力。根据中国钢研在0.5%NaCI+0.5%冰醋酸+饱和硫化氢溶液中的48h全浸腐蚀对比试验分析,10(HSC)的腐蚀速为20号钢的五分之一左右;

 

Pure seamless steel tubes with low carbon, ultralow phosphorus and micro alloying, which can improve the corrosion resistant of the material by adding rare earth elements;
Have good comprehensive mechanical properties, especially the low temperature impact toughness is much higher than that of ordinary carbon materials, and the hardness value is low;
Small size and high purity. According to the several experimental results, the grain size of the material is not more than level 8, and the sum of non-metallic inclusions is less than 4;
Excellent resistance to sulfide stress cracking (SSCC). According to the Hefei general institute, the national quality supervision and inspection center for oil drilling and refinery equipment and other third-party test reports, the crack threshold stress of the material should be much higher than the standard value required; Excellent hydrogen cracking resistance (HIC, SOHIC) ability. According to the several analyses of testing A solution based on the third-party, the crack length ratio (CLR), crack thickness ratio (CTR) and crack sensitivity (CSR) of the material are all zero;
Excellent uniform corrosion resistance ability. According to the contrast experimental analysis of the China Iron & Steel Research Institute Group in 0.5%NaCI+0.5% acetic acid + saturated hydrogen sulfide solution for 48h immersion corrosion the corrosion rate of 10(HSC) is only about one-fifth of 20.

 

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