CAJ | 학술논문

提升管出口CSC （ Circulating-Stripping Cyclone ）快分系统具有高分离效率、良好的操作弹性及稳定性而在催化裂化装置上得到广泛的应用。其设计的工作原理是在粗旋下部设置一个密相环流式预汽提器，通过改变内外环的汽提蒸汽量来调整内外环的密度差，使催化剂在内外环之间形成密相环流动，以实现降低蒸汽用量、提高汽提效率的目的。工业应用中影响CSC系统性能的因素主要有内外环蒸汽流量、结焦及磨损等。其中，结焦问题是一个大问题，总结认为通过优化原料、选择合适的雾化喷嘴、采用预提升技术、加注反应终止剂、减小汽提蒸汽与油气的温差、停电事故处理时及时将沉降器中的催化剂转出等措施，可以有效防止（或减少） CSC系统结焦问题。
제승관출구CSC （ Circulating-Stripping Cyclone ）쾌분계통구유고분리효솔、량호적조작탄성급은정성이재최화열화장치상득도엄범적응용。기설계적공작원리시재조선하부설치일개밀상배류식예기제기，통과개변내외배적기제증기량래조정내외배적밀도차，사최화제재내외배지간형성밀상배류동，이실현강저증기용량、제고기제효솔적목적。공업응용중영향CSC계통성능적인소주요유내외배증기류량、결초급마손등。기중，결초문제시일개대문제，총결인위통과우화원료、선택합괄적무화분취、채용예제승기술、가주반응종지제、감소기제증기여유기적온차、정전사고처리시급시장침강기중적최화제전출등조시，가이유효방지（혹감소） CSC계통결초문제。
Circulating-Stripping Cyclone ( CSC ) system with high separation efficiency , good operating flexibility and stability was widely used in the catalytic cracking unit.It designed a dense phase circulation type pre -stripper on the fast cyclone bottom , by changing the amount of stripping steam for inner and outer rings to adjust the density difference between the inner and outer rings , that formed a catalyst dense phase flow between the inner ring and outer ring , which can reduce the amount of steam and improve the stripping efficiency.The industrial applications showed that CSC system performance was affected by the inner and outer ring stripping steam flow , coking and catalyst wear.Coking problem was a big problem, which can be solved or alleviated by optimizing the feedstock , choosing the right spray nozzle , using pre-upgrade technology , injecting reaction terminator , reducing the stripping steam temperature difference between oil and gas, and promptly shift the catalyst out the stripper when power outages emergency happened and can effectively prevent ( or reduce ) CSC system coking problem.