摘要
以氧化铝为载体,采用浸渍法制备活性组分负载量不同的再生剂,针对FCC汽油碱精制后碱渣含硫、含碱及具有臭味的特征,对FCC汽油碱渣进行脱硫脱臭处理并使碱渣中的碱得以再生。试验结果表明,该过程中化学反应与物理吸附并存,在活性组分金属氧化物负载量为46.19％,再生剂用量0.48 g／mL,反应时间4.5 h,反应温度40-50℃时,碱液中的无机硫脱除率达到了90％,游离NaOH质量浓度达到70-80 g／L。加入新鲜碱液后,回收碱液可在碱洗装置回用,降低了NaOH的消耗且减少了FCC汽油碱渣的排放。
Regenerants were prepared by active component, metai oxide, with different contents carried on alumina carrier using immersion method, for treating the alkali waste from FCC naphtha caustic wash to remove the sulfur and odorant, and reclaim the alkali. The laboratory results showed that the treating comprised with both chemical reaction and physical adsorption. Using a regenerant loaded 46. 19% metal oxide with a dosage of 0. 48g/mL, under a reaction condition of a metal oxide to sulfur ratio of 2, a reaction time of 4. 5h and a temperature range of 40 - 50℃ , the removal rate of inorganic sulfur was higher than 90%, and the concentration of free sodium hydrate could reach 70 -80g/L. After adding some fresh caustic liquid, the reclaimed caustic liquid could be reused in the caustic wash, which decreased the discharge amount of alkali waste and lowered the consumption of sodium hydrate.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2004年第9期74-78,共5页
Petroleum Processing and Petrochemicals
基金
中国石油化工股份有限公司资助项目(502016)西安市科技局基金项目(GG200278)。
