DMF法萃取精餾分離C5餾分中異戊烷的模擬
[摘要] 介紹碳五主要餾分的綜合利用。設(shè)計(jì)過(guò)程中學(xué)習(xí)了PROII軟件相關(guān)模塊的應(yīng)用方法；采用PROII軟件對(duì)DMF法萃取精餾分離C5餾分中異戊烷的萃取精餾塔進(jìn)行模擬?？疾炝嘶亓鞅?、溶劑比(溶劑DMF與進(jìn)料C5的質(zhì)量比) 、理論板數(shù)等因素對(duì)分離異戊烷的影響。模擬結(jié)果表明,萃取精餾塔的最佳工藝條件為:理論板數(shù)為50塊，原料進(jìn)料位置為第30塊理論板,溶劑比0.6,回流比3,溶劑進(jìn)料溫度50 ℃,溶劑進(jìn)料位置在20塊左右。塔頂采出量1236.06kg / h。理論板數(shù)的選擇由實(shí)際工程放大或投資資金綜合分析。并對(duì)優(yōu)化后的工藝進(jìn)行了物料守恒和能量守恒的校核。就此對(duì)主物料物性進(jìn)行了簡(jiǎn)要闡述。確定了流程圖并結(jié)合有關(guān)的數(shù)據(jù)對(duì)工程中節(jié)能措施進(jìn)行了簡(jiǎn)要分析。
關(guān)鍵詞 碳五餾分；PROII軟件；異戊烷；萃取蒸餾；模擬
Abstract Introduced the comprehensive utilization of the main fraction from C5. In the design process I have studied PROII software correlation module application method; The extractive distillation with MEK and NMF as extractant for separating i-pentane from C5 fraction were set up , process of separation of C5 fraction with DMFwas optimized by PROII process simulating software. The model is considered to be re liable.Effects of column trays, refluxratio, extractant ratio (mass ratio of DMF to feed C5) on separation were under observation. The optimized process parameters are as follows: the theoretical tray number is 50,feed tray 30th tray, extractant ratio 0.6, ref luxratio3.0, feed input temperature 50 ℃. feed input tray about 20th tray. and top product out put1236.06 kg / h. The choice of theoretical plate number of the actual works by the amplification or a comprehensive analysis of investment funds. And optimized the process of conservation and energy conservation materials in check. In this connection the main physical properties of materials are briefly described. Had determined the flow chart and the union related data conserved energy the measure to the project in to carryon the brief analysis.

Key Words C5 fraction; PROII software; isopentane; extractive distillation;
目錄
1 前言 1
2 文獻(xiàn)綜述 2
2.1裂解碳五餾分的性質(zhì)和用途 2
2.2 異戊烷簡(jiǎn)介 3
2.3國(guó)內(nèi)外C5資源的這利用現(xiàn)狀及發(fā)展趨勢(shì) 4
2.3.1碳五餾分的組成 4
2.3.2 全球C5資源量 4
2.3.3 國(guó)內(nèi)外C5資源利用現(xiàn)狀 5
2.4裂解碳五分離的工藝簡(jiǎn)介 5
2.5實(shí)現(xiàn)工業(yè)化的一些碳五分離技術(shù) 6
2.5.1 上海石化2.5萬(wàn)噸工業(yè)簡(jiǎn)介 6
2.5.2玉皇聚合級(jí)異戊二烯生產(chǎn)方法 7
3 化工工藝模擬計(jì)算軟件PRO/II簡(jiǎn)介 8
3.1 用戶界面 8
3.2組分及其物性 9
3.3熱力學(xué)模型 9
3.4單元操作 10
3.5流程控制與優(yōu)化 10
4 工藝說(shuō)明 12
4.1 原料組成以及工藝指標(biāo) 12
5 操作條件的確定 13
5.1初始操作條件的確定 13
5.2操作條件的改變對(duì)分離效果的影響 13
5.2.1 溶劑比對(duì)工藝指標(biāo)的影響 13
5.2.2回流比對(duì)工藝指標(biāo)的影響 17
5.2.3溶劑進(jìn)料位置對(duì)工藝指標(biāo)的影響 19
5.2.4回流比和溶劑比的選擇 20
6 優(yōu)化后工藝條件以及指標(biāo) 21
6.1萃取精餾塔主要工藝設(shè)計(jì)參數(shù) 21
6.2 物料流程圖 21
6.3 物料衡算和能量衡算 21
6.3.1物料衡算 21
6.3.2 能量衡算 24
6.4 物料物性匯總 25
7 工藝的優(yōu)化節(jié)能 29
7.1 工藝過(guò)程中熱能的充分利用 29
7.1.1 高溫物料顯熱和潛熱的利用 29
7.1.2 改進(jìn)熱的利用 29
7.1.3 加強(qiáng)保溫保冷 29
7.2 減少精餾過(guò)程本身對(duì)能量的需要 29
7.3 加強(qiáng)管理 31
8 結(jié)語(yǔ) 32
9 致謝 33
參考文獻(xiàn) 34
附圖： 35