乙醇-水溶液連續(xù)精餾塔課計(jì)-化學(xué)畢業(yè)論文(編輯修改稿)
2025-02-12 10:14 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 塔附件設(shè)計(jì)接管（1）進(jìn)料管 (VS)F=== dF=== mm經(jīng)圓整選取熱軋無(wú)縫鋼管（GB816387）：【4】（2）塔頂蒸汽出口管dv qv==取uv=18m/s 則dv===經(jīng)圓整選取熱軋無(wú)縫鋼管（GB816387）：【4】（3）回流液管dRqR=取uR=2m/s 則 dR==經(jīng)圓整選取焊接鋼管（GB309193）:【4】（4）釜液排出管徑dwqw==取uw=經(jīng)圓整選取熱軋無(wú)縫鋼管（GB816387）:【4】（5）、飽和蒸汽管徑ds0 =【4】Vs0==Us0=25m/s ds0==經(jīng)圓整選取熱軋無(wú)縫鋼管（GB816387）:小結(jié)兩個(gè)星期的時(shí)間，我們完成了甲醇水精餾塔的設(shè)計(jì)，一份設(shè)計(jì)書和一張流程圖、一張裝配圖。過(guò)程很復(fù)雜且長(zhǎng)，在設(shè)計(jì)精餾塔的過(guò)程中，我們以從未有過(guò)的熱情投入到化工原理的復(fù)習(xí)中。剛開(kāi)始時(shí)，很迷茫，覺(jué)得自己根本沒(méi)有能力去完成這么復(fù)雜的東西。我想這就是老師想我們做初次鍛煉，我們通過(guò)對(duì)蒸餾知識(shí)的復(fù)習(xí)與鞏固，加上查閱資料、網(wǎng)上搜集材料，最終完成了精餾塔的工藝設(shè)計(jì)書。并且完成了流程圖預(yù)裝配圖。我們所設(shè)計(jì)的精餾塔是用于甲醇水的分離。在課程設(shè)計(jì)期間，我們小組進(jìn)行了合理分工，有問(wèn)題時(shí)大家就一起討論，經(jīng)過(guò)課程設(shè)計(jì)我們學(xué)會(huì)了也學(xué)會(huì)了團(tuán)隊(duì)合作能力。同時(shí)讓我們認(rèn)識(shí)到了自己很多地方不足，還需要很大的努力。本設(shè)計(jì)是一次常規(guī)的練習(xí)設(shè)計(jì)，目的在于掌握設(shè)計(jì)的過(guò)程和分析問(wèn)題的能力，我想再今后的設(shè)計(jì)中會(huì)有一定的進(jìn)步。全章主要主要符號(hào)說(shuō)明符號(hào)意義計(jì)量單位M摩爾質(zhì)量kg/kmolF進(jìn)料率kmol/hD塔頂采出率kmol/hW塔底采出率kmol/hq進(jìn)料熱狀況x液相摩爾分率y氣相摩爾分率R回流比L液相負(fù)荷kmol/hV氣相負(fù)荷kmol/hN塔板數(shù)P操作壓力Pat溫度℃密度kg/m3表面張力mN/m粘度mPasVS氣相體積流率m3/sLS液相體積流率m3/sumax最大空塔氣速m/sHT板間距mhL板上清液高度mC20負(fù)荷系數(shù)C負(fù)荷因子m/su空塔氣速m/sD塔徑mAT塔截面積m2Z有效高度mlW堰長(zhǎng)mhW溢流堰高度mhOW堰上液層高度mWd降液管寬度mAf截面積m2降液管中停留時(shí)間sh0降液管底隙高度mWS邊緣區(qū)寬度mAa開(kāi)孔區(qū)面積m2t孔中心距mmn篩孔數(shù)目個(gè)開(kāi)孔率h阻力PaeV液沫夾帶量kg液/kg氣K穩(wěn)定系數(shù)Hd降液管內(nèi)液層高mCP比熱容kJ/(kmol℃)Q熱量kJ/hr潛化熱kJ/kgG流量kg/h導(dǎo)熱系數(shù)W/(m℃)修正系數(shù)K傳熱系數(shù)W/(m2℃)NP管程數(shù)Re雷諾數(shù)nS單程傳管數(shù)de當(dāng)量直徑mPr普蘭特?cái)?shù)對(duì)流傳熱系數(shù)W/(m2℃)下標(biāo)A輕組分B重組分D餾出液e平衡F加料m平均值W釜液L液相V氣相參考文獻(xiàn)[1].王國(guó)勝 《化工原理課程設(shè)計(jì)》 大連理工大學(xué)出版社[2].馬江權(quán) 冷一欣主編《化工原理課程設(shè)計(jì)》 中國(guó)石化出版社[3].申迎華 主編《化工原理課程設(shè)計(jì)》 化學(xué)工業(yè)出版社[4].王志魁 《化工原理》第三版 化學(xué)工業(yè)出版社ag an employment tribunal clai Emloyment tribunals sort out disagreements between employers and employees. You may need to make a claim to an employment tribunal if: you don39。t agree with the disciplinary action your employer has taken against you your employer dismisses you and you think that you have been dismissed unfairly. For more informu, take advice from one of the organisations listed underFurther help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the organisations listed underFurther help. ation about dismissal and unfair dismissal, seeDismissal. You can make a claim to an employment tribunal, even if you haven39。tappealedagainst the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept i. If you are worried about how the time limits apply to you If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as adamagesbased agreement. In England and Wales, your solicitor can39。t charge you more than 35% of your pensation if you win the case.you39。re clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. To find your nearest CAB, including those that give advice by , click onnearest CAB.For more information about making a claim to an employment tribunal, seeEmployment tribunals.The (lack of) air up there Watch m Cay man Islandsbased Webb, the head of Fifa39。s antiracism taskforce, is in London for the Football Association39。s 150th anniversary celebrations and will attend City39。s Premier League match at Chelsea on Sunday.I
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