[1]蒋国权,肖建韩.连续重整脱戊烷塔顶空冷器铵盐结晶消减措施[J].石油管材与仪器,2020,6(03):87-90.[doi:10.19459/j.cnki.61-1500/te.2020.03.022]
 JIANG Guoquan,XIAO Jianhan.Reduction Measures on Ammonium Salt Crystallization of the Depentanizer Air Cooler in Continuous Reforming Unit[J].Petroleum Tubular Goods & Instruments,2020,6(03):87-90.[doi:10.19459/j.cnki.61-1500/te.2020.03.022]
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连续重整脱戊烷塔顶空冷器铵盐结晶消减措施
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《石油管材与仪器》[ISSN:2096-0077/CN:61-1500/TE]

卷:
6
期数:
2020年03期
页码:
87-90
栏目:
经验交流
出版日期:
2020-06-20

文章信息/Info

Title:
Reduction Measures on Ammonium Salt Crystallization of the Depentanizer Air Cooler in Continuous Reforming Unit
文章编号:
2096-0077(2020)03--0087-04
作者:
蒋国权肖建韩
中石油云南石化有限公司 云南 昆明 650300
Author(s):
JIANG Guoquan XIAO Jianhan
PetroChina Yunnan Petrochemical Co. Ltd., Kunming, Yunnan 650300, China
关键词:
脱戊烷塔铵盐结晶腐蚀消减措施
Keywords:
depentanizer ammonium salt crystallization corrosion reduction measures
分类号:
TE986
DOI:
10.19459/j.cnki.61-1500/te.2020.03.022
文献标志码:
A
摘要:
连续重整脱戊烷塔顶低温部位腐蚀已成为制约装置长周期运行的关键因素之一,尤其是塔顶空冷器铵盐结晶腐蚀,造成空冷器前后压差升高,导致脱戊烷塔操作絮乱,回流量、塔顶压力、冷后温度、回流罐压力等工艺操作参数变化明显。为降低脱戊烷顶空冷器压差,消除铵盐结晶隐患,通过提高脱戊烷塔顶温度分解NH4Cl,采取在线注水冲洗缓解塔顶铵盐结晶腐蚀,并强化重整进料质量管理、生成油脱氯剂使用管理及增加脱戊烷塔顶防护来加强源头控制。通过以上措施能有效消减脱戊烷塔空冷器铵盐结晶,确保装置长周期安全平稳运行。
Abstract:
The low temperature part corrosion of the depentanizer has become one of the pivotal factors restricting longterm operation of the continuous reforming unit. Especially, the ammonium salt crystallization corrosion of air cooler at the top of the depentanizer will lead to an increase in differentialpressure before and after air cooling, resulting in significant variation of the depentanizer process parameters such as return flow, tower top pressure, post cooling temperature, and reflux tank pressure. In order to reduce the differentialpressure and eliminate the hidden hazard of ammonium salt crystallization, NH4Cl was decomposed by increasing the temperature at top of the depentanizer tower, the crystallization corrosion of the tower was alleviated by online water injection flushing, and the quality management of the feedstock, the use of dechlorination agent for catalytic reformate oil and the corrosion protection were optimized to strengthen the source control. The above measures can effectively reduce the ammonium salt crystallization of the air cooler at the top of the depentanizer tower, and ensure safe and stable operation of the unit in a long period.

参考文献/References:

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[4] 王健,曹志涛,王永帮,等.连续重整装置脱戊烷塔顶空冷器的腐蚀原因及对策[J]. 石油化工腐蚀与防护, 2017,34(5):52-55.
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备注/Memo

备注/Memo:
第一作者简介:蒋国权,男,1984年生,2008年毕业于中国石油大学 (华东)化学工程与工艺专业, 主要从事石油炼制技术管理方面的工作。E-mail:jiangguoquan@petrochina.com.cn
更新日期/Last Update: 2020-06-25