| 苯甲酸蒸馏塔内件腐蚀失效分析和防护对策 |
| |
| 引用本文： | 苏同君,苏楷然,王博.苯甲酸蒸馏塔内件腐蚀失效分析和防护对策[J].石油化工设备,2012,41(3):83-86. |
| |
| 作者姓名： | 苏同君 苏楷然 王博 |
| |
| 作者单位： | 1. 中国石油化工股份有限公司石家庄炼化分公司,河北石家庄,050032
2. 中国石油大学(华东),山东青岛,266000 |
| |
| 摘 要： | 用化学方法、金相显微镜和扫描电镜等对失效后的苯甲酸蒸馏塔塔内件(支撑圈和降液板)进行了分析,结果表明,支撑圈的腐蚀失效模式为严重的P、Si偏析所引起的非敏化态晶间腐蚀造成的晶粒脱落直至穿孔,并伴有晶间和穿晶混合型应力腐蚀开裂。折流板的失效模式是晶间型的应力腐蚀开裂,其拉应力是由温差带来的。最后提出了相应的防护措施。
|
| 关 键 词： | 蒸馏塔 苯甲酸 支撑圈 降液板 失效分析 防护措施 |
Failure Analysis and Prevention Measures of the Internals in Benzoic Acid Distillation Column |
| |
| SU Tong-jun
,
SU Kai-ran
,
WANG Bo.Failure Analysis and Prevention Measures of the Internals in Benzoic Acid Distillation Column[J].Petro-Chemical Equipment,2012,41(3):83-86. |
| |
| Authors: | SU Tong-jun SU Kai-ran WANG Bo |
| |
| Affiliation: | 1. SINOPEC Shijiazhuang Refining Branch, Shijiazhuang 050032, China; 2. China University of Petroleum East, Qingdao 266000, China) |
| |
| Abstract: | The chemical, metallurgical microscope and scanning electron microscopy were uti- lized to analyze the failed internals （support ring and the downcomer plate） in benzoic acid distil- lation column. The results showed that, the corrosion failure modes of support ring is that grain loss and perforation, due to the severe P, Si segregation caused non-sensitized state intergranular corrosion. Accompanied by intergranular and transgranular stress corrosion cracking. The failure mode of baffles is intergranular stress corrosion cracking. The tensile stress was caused by tem- perature. |
| |
| Keywords: | distillation column benzoic acid support ring downcomer plate failure analysis prevention measure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
