炼油厂硫磺回收工艺及催化剂的改进和优化
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摘要
中国石油宁夏石化分公司炼油厂5000 t/a硫磺回收装置改造前采用两级克劳斯+低温加氢还原吸收工艺,加氢后的尾气经过MDEA吸收,其排放烟气中SO_2质量浓度为500～800 mg/m~3。其中,溶剂再生系统采用集中再生。根据中国石油西南油气田公司天然气研究院的设计工艺,工厂进行了全新的工艺改造,即采用天然气研究院生产的钛基催化剂增强水解和双段吸收工艺,成功解决了硫磺回收装置烟气中SO_2质量浓度达标排放的问题,排放烟气中SO_2质量浓度约50 mg/m~3,可为小型硫磺回收装置,尤其是碱液碱渣处理困难的工厂的尾气达标排放提供技术思路及解决方案。
The 5 000 t/a sulfur recovery unit in the refinery of PetroChina Ningxia Petrochemical Company used two-stage Claus and low temperature hydrogenation-reduction absorption process before improvement.The hydrogenated tail gas was absorbed by MDEA.The mass concentration of SO_2 in flue gas was 500-800 mg/m~3.The method of centralized regeneration was adopted in solvent regeneration system.Based on the design process provided by Research Institute of Natural Gas Technology(RINGT),PetroChina Southwest Oil & Gasfield Company,the refinery carried out a new technology improvement.The hydrolysis was enhanced by Ti-based catalyst which was developed by RINGT and two-stage absorption process was applied.The SO_2 mass concentration in flue gas from sulfur recovery unit was about 50 mg/m~3 after improvement,which had met the discharge standard.The technology improvement could provide technical ideas and solutions for the tail gas up-to-standard discharge of the small-scale sulfur recovery units,especially for the factories which are difficult to treat lye and alkali residue.
The 5 000 t/a sulfur recovery unit in the refinery of PetroChina Ningxia Petrochemical Company used two-stage Claus and low temperature hydrogenation-reduction absorption process before improvement.The hydrogenated tail gas was absorbed by MDEA.The mass concentration of SO_2 in flue gas was 500-800 mg/m~3.The method of centralized regeneration was adopted in solvent regeneration system.Based on the design process provided by Research Institute of Natural Gas Technology(RINGT),PetroChina Southwest Oil & Gasfield Company,the refinery carried out a new technology improvement.The hydrolysis was enhanced by Ti-based catalyst which was developed by RINGT and two-stage absorption process was applied.The SO_2 mass concentration in flue gas from sulfur recovery unit was about 50 mg/m~3 after improvement,which had met the discharge standard.The technology improvement could provide technical ideas and solutions for the tail gas up-to-standard discharge of the small-scale sulfur recovery units,especially for the factories which are difficult to treat lye and alkali residue.
引文
[1] 陈赓良. 富氧硫磺回收工艺技术的开发与应用[J]. 石油与天然气化工, 2016, 45(2): 1-6.
[2] 宋彬, 李金金, 龙晓达. 天然气净化厂尾气SO2排放治理工艺探讨[J]. 天然气工业, 2017, 37(1): 137-144.
[3] 刘勇, 张万全, 李峰, 等. 炼油厂硫磺回收联合装置SO2达标排放对策[J]. 石油与天然气化工, 2015, 44(4): 8-13.
[4] 王志刚, 陶兆勇, 段贤勇, 等. 天然气净化厂SO2减排技术的应用及讨论[J]. 天然气与石油, 2017, 35(1): 60-63.
[5] 杨威, 常宏岗, 何金龙, 等. 具有高选择性和可再生性的二氧化硫脱除溶剂研发[J]. 石油与天然气化工, 2016, 45(1): 8-13.
[6] 李鹏, 刘爱华. 影响硫磺回收装置SO2排放浓度的因素分析[J]. 石油炼制与化工, 2013, 44(4): 75-79.
[7] 温崇荣, 段勇, 朱荣海, 等. 我国硫磺回收装置排放烟气中SO2达标方案探讨[J]. 石油与天然气化工, 2017, 46(1): 1-7.
[8] 陈程. 降低硫磺回收装置尾气SO2排放的措施[J]. 石油化工应用, 2017, 36(8): 138-141.
[9] 吴昊. 宁夏石化5 kt/a硫磺回收装置尾气排放超标原因分析及对策[J]. 石油化工应用, 2016, 35(1): 101-103.
[10] 温崇荣. 有机硫对硫磺回收装置转化率的影响[C]//硫磺回收二十年论文集. 2015: 172-175.
[11] 温崇荣, 廖小东, 黄灵, 等. 硫磺回收催化剂CT6-8的研究与应用[J]. 天然气与石油, 2012, 30(1): 26-29.
[12] 常宏岗, 朱荣海, 刘宗社, 等. 克劳斯尾气低温加氢水解催化剂研究与工业应用[J]. 天然气工业, 2015, 35(4): 88-93.
[13] 胡天友, 何金龙, 温崇荣, 等. 硫磺回收加氢尾气深度脱硫技术的工业应用[C]//第十九届全国气体净化及硫磺回收技术年会(2018)论文集. 2018: 139-142.
[14] 叶全旺, 裴古堂, 唐忠怀, 等. 低温加氢催化剂CT6-11在硫磺回收装置RAR尾气处理单元的应用[J]. 石油与天然气化工, 2013, 42(3): 238-241.
[15] 田满宏, 党占元, 唐忠怀, 等. CT6-11低温加氢催化剂在塔河硫磺回收装置的应用[J]. 石油与天然气化工, 2013, 42(2): 123-126.
[2] 宋彬, 李金金, 龙晓达. 天然气净化厂尾气SO2排放治理工艺探讨[J]. 天然气工业, 2017, 37(1): 137-144.
[3] 刘勇, 张万全, 李峰, 等. 炼油厂硫磺回收联合装置SO2达标排放对策[J]. 石油与天然气化工, 2015, 44(4): 8-13.
[4] 王志刚, 陶兆勇, 段贤勇, 等. 天然气净化厂SO2减排技术的应用及讨论[J]. 天然气与石油, 2017, 35(1): 60-63.
[5] 杨威, 常宏岗, 何金龙, 等. 具有高选择性和可再生性的二氧化硫脱除溶剂研发[J]. 石油与天然气化工, 2016, 45(1): 8-13.
[6] 李鹏, 刘爱华. 影响硫磺回收装置SO2排放浓度的因素分析[J]. 石油炼制与化工, 2013, 44(4): 75-79.
[7] 温崇荣, 段勇, 朱荣海, 等. 我国硫磺回收装置排放烟气中SO2达标方案探讨[J]. 石油与天然气化工, 2017, 46(1): 1-7.
[8] 陈程. 降低硫磺回收装置尾气SO2排放的措施[J]. 石油化工应用, 2017, 36(8): 138-141.
[9] 吴昊. 宁夏石化5 kt/a硫磺回收装置尾气排放超标原因分析及对策[J]. 石油化工应用, 2016, 35(1): 101-103.
[10] 温崇荣. 有机硫对硫磺回收装置转化率的影响[C]//硫磺回收二十年论文集. 2015: 172-175.
[11] 温崇荣, 廖小东, 黄灵, 等. 硫磺回收催化剂CT6-8的研究与应用[J]. 天然气与石油, 2012, 30(1): 26-29.
[12] 常宏岗, 朱荣海, 刘宗社, 等. 克劳斯尾气低温加氢水解催化剂研究与工业应用[J]. 天然气工业, 2015, 35(4): 88-93.
[13] 胡天友, 何金龙, 温崇荣, 等. 硫磺回收加氢尾气深度脱硫技术的工业应用[C]//第十九届全国气体净化及硫磺回收技术年会(2018)论文集. 2018: 139-142.
[14] 叶全旺, 裴古堂, 唐忠怀, 等. 低温加氢催化剂CT6-11在硫磺回收装置RAR尾气处理单元的应用[J]. 石油与天然气化工, 2013, 42(3): 238-241.
[15] 田满宏, 党占元, 唐忠怀, 等. CT6-11低温加氢催化剂在塔河硫磺回收装置的应用[J]. 石油与天然气化工, 2013, 42(2): 123-126.