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Steam Failure Analysis of Superheater


Cracking can be seen, the general environment of austenitic stainless steel in NaOH with stress corrosion sensitivity, and at high temperatures even more serious. (3) on-site observation and EDS analysis results show that the cooking stove in the process, the lye from the drum into the steam superheater, and there is considerable concentration. Site operation records, the process of cooking stoves, superheated steam temperature is 200. C or more up to 78h, of which more than 300. C, time of 60h. The conversion of high temperature furnace, cooking stove a small amount of process steam into the steam superheater of lye will be further concentrated, so as to constitute a serious stress corrosion of austenitic stainless steel, the specific environment. (4) steam superheater tube weld cracks are mainly located in or near the bend, these sites have a residual stress, such as additional stress. Another king of Indian culture such as: steam Superheater Failure analysis, because a steam pipe in the bottom of the fixed, in the heating process, a steam pipe up the expansion, but also makes the connected straight tube have a greater additional stress, the stress is to facilitate corrosion cracking of steam superheater tubes of mechanical factors. The foregoing analysis, the process of alkali in the cooking stove into the steam superheater, while the steam superheater steam during the cooking oven temperatures in excess of 300. C, time of 60h, in this condition, residual stress in the steam superheater and a large part of additional stress, stress corrosion cracking is inevitable,[link widoczny dla zalogowanych], until the broken pipe lO conclusions reformer hydrogen plant steam superheater tube cracking,[link widoczny dla zalogowanych], is Since cook stove in the process of drum pressure lye into the steam superheater caused by stress corrosion cracking Reference 1GB13296-1991 \Yan Jian Application Notes corrosion casting and forging materials, Beijing: Mechanical Industry Press. 1991391 Casting Technology Overview express Foreign Information Received Date :2000 -03-29 \Casting a wide range of related fields, and \\source journals, databases and other sources of Chinese Science Citation journals, the United States EI, CA, CSA and other well-known database and retrieval systems include the source magazine, periodicals Casting Address: Shenyang City, West District, 17 South Street Tel Yunfeng; 024-25847830 Fax: 024-85610054 Postal Code t110021E-mai1: foundry @ pub, in. cninfonet Subscribe \theory, applied technology, information, patents, and other columns. Is engaged in adhesive research, production, application staff mentor. Domestic and international public offering, Youfadaihao :38 - 40, bimonthly, big 16 format, 64 pages, price 60 per year. Can subscribe to the post office across the country. Editorial Address: Spring Garden Road, Xiangfan City, Hubei Province, 8, Postal Code 441003 Tel :0710 --3,341,118 ext 8003 Fax :0710 --3,340,918 Subscribe \Columns: policy guidance, monographs and review, security, monitoring and quality management, special equipment. Safety,[link widoczny dla zalogowanych], accident analysis, the standard review, import and export inspection, water treatment, non-destructive testing. Operation and management, plumbing, information and dynamic, the problem of so. Therefore, \,[link widoczny dla zalogowanych], researchers, operators and professional institutions such as teachers and students read publications. The journal is bi-monthly,[link widoczny dla zalogowanych], large 16 mo, Issue CNI1-3865/TKISSN1002-7734, 2001 year per book price 800 yuan, 48.00 yuan year, Youfadaihao :82-41】 Bank; peace in the Beijing Industry and Commerce Branch Account :042891400-92 Editorial Address: Heping Street, Chaoyang District, Beijing Xiyuan 2, PC; 100013 + Telephone E-mail: zzhsh @ cbpvi. com. cn

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