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催化裂化再生器NO原位富集的工艺方法
Process method for insitu enrichment of NO in catalytic cracking regenerator
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- DOI:
- 作者:
- 张 亢
Zhang Kang
- 作者单位:
- 中国石油大庆炼化公司炼油生产二部，黑龙江 大庆 163411
Refinery 2rd Operation Department，Daqing Refining & Chemical Company，Daqing 163411，China
- 关键词:
- 催化裂化；再生器；NO；原位富集
catalytic cracking；regenerator；NO；in situ enrichment
- 摘要:
- 摘要：催化裂化装置的碳排放量约为 30%~50%，而再生烟气是 NO 的重要源头，其烟气流量大，NO浓度低，使得常规的再生后脱硫技术运行费用较高。为实现NO的高效率、低耗捕获，根据再生烟气净化过程的特征，此项目对再生池NO原位浓缩技术进行了研究。通过数值仿真和流程仿真，对新技术应用进行探讨，并对现有装置可能产生的冲击进行了分析。项目前期研究发现，采用现场浓缩NO技术，不仅能确保反应器内部气固两相的流动，而且能使再生烟气中NO的体积含量大于85%，且NO的质量含量大于93%，为再生烟气中NO的高效回收与捕获开辟了新途径。Abstract：The carbon emission of catalytic cracking unit was about 30%~50%. The regeneration flue gas was an important sourceof NO, with large gas flow rate and low NO concentration, which made the high operating cost for conventional regenerateddesulfurization technology. In order to achieve NO high efficiency and low consumption capture, the project studied the insituenrichment technology of NO in the regeneration pool according to the characteristics of the purification process of regeneration fluegas. Through numerical simulation and flow simulation, it discussedthe application of the new technology, analyzedthe possibleimpact of the existing unit. The preliminary study of the project found that insitu enrichment of NO technology can not only ensurethe gas phase and solid phase flow inside the reactor, but also made the volume content of NO in the regeneration flue gas greaterthan 85% and the mass content of NO greater than 93%, which opened up a new way for the efficient recovery and capture of NO inthe regeneration flue gas.