【正文】 ......................................................................... 29 篩板的流體力學(xué)驗(yàn)算： .................................................................................. 30 塔板壓： .............................................................................................. 30 液面落差 .............................................................................................. 30 液沫夾帶 .............................................................................................. 30 漏液 ...................................................................................................... 31 液泛 ...................................................................................................... 31 塔板負(fù)荷性能圖 .............................................................................................. 31 漏液線 .................................................................................................. 31 液沫夾帶線 .......................................................................................... 32 液相負(fù)荷下限線 .................................................................................. 32 液相負(fù)荷上限線 .................................................................................. 33 液泛線 .................................................................................................. 33 7 設(shè)備穩(wěn)定 性 及機(jī)械強(qiáng)度校核計(jì)算 ............................................................................. 37 塔高估算 .......................................................................................................... 37 筒體強(qiáng)度計(jì)算 .................................................................................................. 37 精餾塔壁厚 .......................................................................................... 37 封頭的選取 .......................................................................................... 38 塔設(shè)備所承受的各種載荷計(jì)算 ...................................................................... 38 質(zhì)量載荷 .............................................................................................. 38 風(fēng)載荷 .................................................................................................. 39 設(shè)計(jì)結(jié)果 ......................................................................................................................... 41 主要參數(shù)一覽表 ..................................................................................................... 41 物料衡算數(shù)據(jù)一覽表 ............................................................................................. 41 塔設(shè)備計(jì)算數(shù)據(jù)一覽表 ......................................................................................... 42 附錄 ................................................................................................................................. 44 主要參考文獻(xiàn) ................................................................................................................. 44 致謝 ................................................................................................................................. 45 河南城建學(xué)院?？飘厴I(yè)設(shè)計(jì) 主要符號(hào)說明 ii 主要符號(hào)說明 項(xiàng)目 符號(hào) 單位 平均壓強(qiáng) Pm mmHg 平均溫度 Tm ℃ 流量 氣相 VS Kmol/s 液相 LS m3/s 實(shí)際塔板數(shù) N 塊 板間距 HT m 塔的有效高度 Z m 塔徑 D m 空塔氣速 u m/s 堰長 lw m 堰高 hw m 溢流堰寬度 wd m 管底與受液盤距離 h0 m 板上清液層高度 hl m 孔徑 d0 mm 孔間距 t mm 孔數(shù) n 個(gè) 開孔面積 Aa m2 篩孔氣速 u0 m/s 塔板壓降 hp KPa 液體在降液管中停留時(shí)間 ? S 降液管內(nèi)清液高度 Hd m 霧沫夾帶 Ve kg 液 /kg 氣 氣相最大負(fù)荷 LS,max m3/s 液相最大負(fù)荷 LS,max m3/s 河南城建學(xué)院專科畢業(yè)設(shè)計(jì) 引言 1 引言 粗苯是煤煉焦過程的副產(chǎn)品，其中含有苯、甲苯、二甲苯等工業(yè)原料和大量雜質(zhì)，粗苯精制就是通過物理或化學(xué)方法去除這些雜質(zhì)，得到高純度的苯類產(chǎn)品的過程。 xylene tower into the feed traffic to . Through the key equipment of size calculated: high winds benzene high tower H = 。 benzene tower blown the feed traffic to 。 Calculated in accordance with a clear division: benzene into the light feed traffic to 。 關(guān)鍵字：粗苯 、 精制 、苯 通過設(shè)計(jì)計(jì)算，得到以下主設(shè)備圖紙 2河南城建學(xué)院?？飘厴I(yè)設(shè)計(jì) 設(shè)計(jì)說明 II Design specification Crude benzol refining process, is the chemical processing of crude benzol is converted into a gas, liquid and solid products, and the gas and liquid product is further processed into a series of chemical products . Crude Benzol currently refining process are: Pickling and refined method of hydrogenation. Pickling refined method of simple, but there are liquid waste. The law in China39。通過對(duì)關(guān)鍵設(shè)備機(jī)械強(qiáng)度校核得到：純苯塔質(zhì)量載荷為 ；風(fēng)載荷： 11截面為 N 通過物料衡算得到苯每小時(shí)產(chǎn)量為 t/h；按清晰分割計(jì)算得：輕苯進(jìn)料量為 t/h；酸洗反應(yīng)器進(jìn)料量為 t/h；吹苯塔進(jìn)料量為 t/h；按非清晰分割計(jì)算得：純苯塔進(jìn)料量為 t/h 甲苯塔進(jìn)料量為 t/h；二甲苯塔進(jìn)料量為 t/h。 本設(shè)計(jì)采用酸洗精制對(duì)粗苯精制工藝進(jìn)行了設(shè)計(jì)計(jì)算，著重設(shè)計(jì)計(jì)算了粗苯精制過程的關(guān)鍵設(shè)備。酸洗精制法工藝簡單，該法在 我國焦化廠得到廣泛應(yīng)用。 畢 業(yè) 設(shè) 計(jì) [論 文 ] 題 目： 3 萬噸每年粗苯精制工藝設(shè)計(jì) 學(xué) 院： 化學(xué)與材料工程學(xué)院 專 業(yè)： 煤炭深加工與利用 完成時(shí)間： 2020 年 5 月 27 日 河南城建學(xué)院專科畢業(yè)設(shè)計(jì) 設(shè)計(jì)說明 I 設(shè)計(jì)說明 粗苯精制工藝，是將粗苯經(jīng)化學(xué)加工轉(zhuǎn)換為氣體，液體和固體產(chǎn)物，并將氣體和液體產(chǎn)物進(jìn)一步加工成一系列化學(xué)產(chǎn)品的過程。 目前粗苯精制工藝過程有：酸洗精制法和加氫精制法。加氫精制法工藝復(fù)雜，對(duì)設(shè)備材質(zhì)和自動(dòng)控制要求高，該法在我國也得到一定的應(yīng)用。主要包括物料衡算，主要塔設(shè)備的工藝尺寸計(jì)算，并對(duì)關(guān)鍵設(shè)備進(jìn)行了機(jī)械強(qiáng)度校核。通過對(duì)關(guān)鍵設(shè)備工藝尺寸計(jì)算得到：吹苯塔塔高H=；純苯塔塔高為 ，塔徑為 。 m。s coke plant is widely used. Hydrogenation process of plex, material and equipment for automatic control requirements. The law in China has been applied. This design uses pickling crude benzol refining process of refining a design, the focus on design and calculation of the process of refining crude benzol key equipment. Including material balance, the main tower of the size of equipment, and key equipment to check the mechanical strength. Get through the material balance for the production of benzene per hour。 pickling reactor feed traffic to 。 On nonclear segmentation in the calculation: Refining benzene tower into