【正文】 遼寧石油化工大學(xué) 畢業(yè)設(shè)計(jì) (論文 )用紙 I FCC汽油在 Na2CO3改性催化劑上加氫脫硫性能的研究 摘 要 我國汽油中絕大部分的硫來自催化裂化汽油 (FCC 汽油 )，成品汽油的調(diào)和組分約80%的汽油來自流化催化裂化。采用傳統(tǒng)的 FCC 汽油加氫精制工藝雖然能夠有效降低汽油中的硫含量，但需要高氫壓，投資和操作費(fèi)用高，而且烯烴因加氫飽和而造成的辛烷值損失較大。因此，開發(fā) FCC 汽油深度選擇性加氫脫硫成為改善汽油品質(zhì)的關(guān)鍵技術(shù)。 本實(shí)驗(yàn)研究了不同濃度 Na2CO3溶液處理對 Si/Al=25 的 ZSM5 分子篩的孔結(jié)構(gòu)及對 CoMo/ZSM5 催 化 劑加 氫 脫硫 性 能的 影響 ， 并考 察 了工 藝條 件 對CoMo/ZSM5(25)加氫脫硫性能的影響。實(shí)驗(yàn)結(jié)果表明，在 CoMo/ZSM5(25)催化劑上，當(dāng)氫油比為 300:1，反應(yīng)溫度為 300 ℃ ，壓力 MPa，空速 h1時(shí)，脫硫率最高，為 %。 關(guān)鍵詞： 脫硫率；加氫脫硫；堿處理； ZSM5 分子篩 遼寧石油化工大學(xué) 畢業(yè)設(shè)計(jì) (論文 )用紙 II Abstract The vast majority of sulfur in gasoline in our country es from FCC gasoline， FCC gasoline)， harmonic ponents of the finished product gasoline about 80% of the gas from fluidized catalytic cracking. Adopting traditional FCC gasoline hydrofining process can effectively reduce the sulfur content in gasoline， but need high hydrogen pressure， investment and operation cost is high,and because of olefin hydrogenation saturation and octane number loss caused. As a result， the depth of the development of FCC gasoline selective hydrogenation desulfurization bee the key technology of improving the quality of motor gasoline. This study examines the alkali treatment temperature time of 4 mol/L Na 2CO3 solution deal with Si/Al=50 ZSM5 Zeolite acidity， pore structure， crystallinity and crystal grain size and the influence of light thiophene in desulfurization reaction conversion rate. Experimental results show that the processing temperature 80 ℃ ， the processing time 2 h， 4 mol/L Na2CO3 solution processing of HZSM5 molecular sieve catalyst， specific surface area， mesoporous number， mesoporous aperture is bigger， hydrogenation desulfurization performance is better. In the best conditions of modified HZSM5 molecular sieve catalyst， the effect of process conditions on thiophene conversion was investigated， when reaction temperature is 300 ℃ ， pressure is MPa， space ， thiophene conversion rate is highest， at %. Key words: thiophene； Hydrogenation desulfurization； Alkali treatment； ZSM 5 zeolite 遼寧石油化工大學(xué) 畢業(yè)設(shè)計(jì) (論文 )用紙 III 目 錄 1 文獻(xiàn)綜述 ............................................................................................................................ 6 FCC 汽油加氫技術(shù)現(xiàn)狀及發(fā)展趨勢 ...................................................................... 6 FCC 汽油加氫脫硫反應(yīng)機(jī)理 ................................................................................. 7 國外汽油選擇性加氫脫硫工藝 ............................................................................. 9 OCTGA IN 工藝 ............................................................................................ 9 PrimeG+工藝 ................................................................................................ 9 SCANfining 工藝 ........................................................................................ 10 國內(nèi)汽油選擇性加氫工藝 ................................................................................... 11 OTA 工藝 ..................................................................................................... 11 DSO 技術(shù) ..................................................................................................... 12 RSDS 技術(shù) ................................................................................................... 13 OCTM 工藝 ................................................................................................ 14 FRS 工藝 ...................................................................................................... 15 FCC 汽油加氫脫硫技術(shù)的發(fā)展趨勢 ................................................................... 15 ZSM5 分子篩簡介 ............................................................................................... 16 ZSM5 分子篩的合成 ........................................................................................... 16 ZSM5 分子篩的改性 ........................................................................................... 17 堿處理對分子篩形貌的影響 ............................................................................... 18 堿改性對分子篩擴(kuò)散性能的影響 .................................................................... 19 其它分子篩改性方法 ........................................................................................ 20 水蒸氣改性 ............................................................................................... 20 離子交換改性 ........................................................................................... 20 遼寧石油化工大學(xué) 畢業(yè)設(shè)計(jì) (論文 )用紙 IV 浸制改性 ................................................................................................... 21 本實(shí)驗(yàn)選題目的及意義 ..................................................................................... 21 2 實(shí)驗(yàn)部分 ..........................................................................................................................22 藥品及儀器 ........................................................................................................... 22 實(shí)驗(yàn)藥品 ..................................................................................................... 22 實(shí)驗(yàn)儀器 ..................................................................................................... 23 催化劑制備與表征 ............................................................................................... 23 堿處理催化劑的制備 ................................................................................. 23 負(fù)載金屬催化劑的制備 ............................................................................. 23 催化劑表征 ................................................................................................. 24 加氫脫硫?qū)嶒?yàn)流程與步驟 ................................................................................... 25 實(shí)驗(yàn)流程 ..................................................................................................... 25 實(shí)驗(yàn)步驟 ..................................................................................