重油催化氨精制塔塔底封头失效分析  

FAILURE ANALYSIS OF THE SEALING HEAD AT THE BOTTOM OF AMMONIA REFINING TOWER IN A HEAVY OIL CATALYSIS UNIT

作　　者：杨力 王延明 韩伟 王汉军 曹敏 曾宏 陈华 刘素娥[2] 朱自勇[2] 

机构地区：[1]锦西炼油化工总厂研究院,葫芦岛125001 [2]中国科学院金属腐蚀与防护研究所,沈阳110015

出　　处：《腐蚀科学与防护技术》2000年第3期179-181,共3页Corrosion Science and Protection Technology

摘　　要：分析了重油催化装置的氨精制塔塔底封头开裂原因 ,发现母材 30 4不锈钢由于冷加工 (旋压 )发生马氏体相变 .在湿硫化氢的环境下 ,含形变马氏体的 30 4不锈钢发生了湿硫化氢应力腐蚀开裂 (SSCC) .A failure analysis of the sealing head at the bottom of the ammonia refining tower in a heavy oil catalysis unit has been made. It was found that martensite phase transformation occurred in the matrix of 304 stainless steel due to cold working (spinning). The 304 stainless steel containing deformation martensite was subjected to hydrogen sulphide stress corrosion cracking in the environment of wet hydrogen sulphide. Some protective measurements are proposed.

关 键 词：重油催化 王锈钢 硫化氢 应力腐蚀开裂 氨精制塔 

分 类 号：TE985.9[石油与天然气工程—石油机械设备] TG172.9[金属学及工艺—金属表面处理]