几种催化裂化装置湿法烟气脱硫技术浅析

简要介绍催化裂化装置烟气脱硫技术。抛弃法重点介绍了杜邦-贝尔格(DuPont-Belco)公司的EDV技术、埃克森美孚(Exxon Mobil)的WGS技术和氨法烟气脱硫技术;可再生循环吸收法简要介绍中国石化集团洛阳石油化工工程公司自行开发的RASOC可再生湿法烟气脱硫工艺及其具有自主知识产权的LAS吸收剂。对主要湿法烟气脱硫工艺进行了分析,对湿法烟气脱硫工艺中的碱洗法和氨法以及RASOC进行了技术和经济对比。还将RASOC工艺与国内催化裂化烟气脱硫领域仅有的已应用技术(EDV)进行了对比分析,表明RASOC技术和EDV技术烟气中SO2质量浓度临界点均为6.278 g/m3,当烟气中SO2浓度低于临界点时,采用EDV技术经济上更合理;当烟气中SO2浓度高于临界点时,采用RASOC技术经济上更合理。

Analysis of FCCU wet flue gas scrubbing technologies

The FCCU flue gas scrubbing technologies are briefed. The abandoning technologies are described in detail, such as DuPont-Belco＇ s EDV process, Exxon Mobil＇ s WGS process and ammonia scrubbing process. In addition, the regenerable recycle absorption process-RASOC and proprietary LAS absorbent de- veloped by Sinopec Luoyang Petrochemical Engineering Corporation are introduced. The main wet flue gas scrubbing processes are analyzed, and technology and economics are compared for alkaline scrubbing process, ammonia process and RASOC process. The comparison analysis of RASOC process and EDV process applied in the flue gas scrubbing of FCC units in China shows that the critical concentration of SOz in flue gas is 6. 278 g/m^3 for RASOC and EDV processes. When the SO2 in flue gas is lower than the critical value, the applica- tion of EDV process is more economic ; When the SO2 in flue gas is higher than the critical value, the selection of RASOC process is more economically feasible.