广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2015年
12期
147-148,184
,共3页
催化裂化%分馏塔%器壁%冲蚀%泄露%修复
催化裂化%分餾塔%器壁%遲蝕%洩露%脩複
최화열화%분류탑%기벽%충식%설로%수복
catalytic cracking%fractionation%wall%erosion%leakage%repair
催化裂化装置的分馏塔器壁在运行期间出现泄漏，停工抢修发现泄漏处的器壁穿孔，塔壁内部经过除锈后发现腐蚀产生在局部，经过原因分析发现，穿孔的主要原因是进行CTST塔盘技术改造后，穿过罩帽产生的气流冲蚀造成的，同时也有塔器制造、油品性质以及设备管理的原因，为了尽快恢复生产，现场采取了局部挖补的维修方案，并采取了延缓冲蚀的措施。最后分析了泄漏事故的经验教训，避免类似的事故再次发生。
催化裂化裝置的分餾塔器壁在運行期間齣現洩漏，停工搶脩髮現洩漏處的器壁穿孔，塔壁內部經過除鏽後髮現腐蝕產生在跼部，經過原因分析髮現，穿孔的主要原因是進行CTST塔盤技術改造後，穿過罩帽產生的氣流遲蝕造成的，同時也有塔器製造、油品性質以及設備管理的原因，為瞭儘快恢複生產，現場採取瞭跼部挖補的維脩方案，併採取瞭延緩遲蝕的措施。最後分析瞭洩漏事故的經驗教訓，避免類似的事故再次髮生。
최화열화장치적분류탑기벽재운행기간출현설루，정공창수발현설루처적기벽천공，탑벽내부경과제수후발현부식산생재국부，경과원인분석발현，천공적주요원인시진행CTST탑반기술개조후，천과조모산생적기류충식조성적，동시야유탑기제조、유품성질이급설비관리적원인，위료진쾌회복생산，현장채취료국부알보적유수방안，병채취료연완충식적조시。최후분석료설루사고적경험교훈，피면유사적사고재차발생。
Leakage was found in fractionating tower wall of catalytic cracking unit in operation , a punch hole was found during the shutdown repair , corrosion was found locally after the tower wall internal rust removal.Through the cause analysis , it was found that the main reason of perforation was caused by air erosion through the cover cap after carrying out technical transformation of CTST tray , at the same time it may also be caused by some other reasons , such as tower manufacturing , oil property and equipment management.In order to resume production as soon as possible , the scene took a maintenance scheme for local patching , and took measures to slow the erosion.The experiences and lessons from the accident were analyzed to prevent similar incidents from happening again.
