| 中压加氢裂化装置原料油换热器传热系数下降的原因及对策 |
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| 引用本文： | 楼剑常,张映旭. 中压加氢裂化装置原料油换热器传热系数下降的原因及对策[J]. 石油炼制与化工, 2005, 36(12): 21-23 |
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| 作者姓名： | 楼剑常 张映旭 |
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| 作者单位： | 中国石化燕山分公司,北京,102503 |
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| 摘 要： | 介绍了1.30Mt/a中压加氢裂化装置原料油换热器在运行过程中的结垢问题.通过对结垢原因的分析和处理措施的探讨,指出预防加氢裂化装置原料油换热器结垢要采取以下措施：（1）在原料罐顶加氮封;（2）做好原料油过滤;（3）控制原料和新氢中的氯含量.对结垢后的换热器,可以采取如下处理办法：（1）用催化裂化柴油冲洗;（2）向原料油中注入防垢剂.
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| 关 键 词： | 加氢裂化 换热器 传热系数 |
| 收稿时间： | 2005-04-28 |
| 修稿时间： | 2005-07-29 |
TROUBLESHOOTING ON THE DESCENDING OF THE HEAT-TRANSFER COEFFICIENT OF THE FEED HEAT EXCHANGERS IN THE HYDROCRACKING UNIT |
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| Lou Jianchang,Zhang Yingxu. TROUBLESHOOTING ON THE DESCENDING OF THE HEAT-TRANSFER COEFFICIENT OF THE FEED HEAT EXCHANGERS IN THE HYDROCRACKING UNIT[J]. Petroleum Processing and Petrochemicals, 2005, 36(12): 21-23 |
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| Authors: | Lou Jianchang Zhang Yingxu |
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| Affiliation: | Yanshan Petrochemical Company, Beijing 102503 |
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| Abstract: | The problems of fouling in the feed heat exchangers of a 1.3Mt/a medium pressure hydrocracking unit was discussed. By analyzing the formation of fouling deposits some countermeasures were proposed and practiced. The following measures were adopted to prevent the formation of fouling in the feed heat exchangers: (1)adding nitrogen seal in the feed tank; (2)filtering the feed oil; (3)controlling the chlorine content in the feed and the fresh hydrogen. If fouling deposits were formed in the heat exchanger, the following treatments could be applied: (1)flushing with catalytic cracked distillates; (2)injecting fouling inhibitor into the feed oil. |
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| Keywords: | hydrocracking heat exchanger heat transfer coefficient |
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