畢業(yè)論文-甲醇和水篩板精餾塔分離

1、設(shè)計計算<一>設(shè)計方案的確定本設(shè)計任務(wù)為分離甲醇-水混合物。對于二元混合物的分離，應(yīng)采用連續(xù)精餾流程。設(shè)計中采用泡點進(jìn)料，將原料液通過預(yù)加熱器至泡點后送入精餾塔內(nèi)。塔頂上升蒸汽采用全凝器冷凝，冷凝液在泡點下一部分回流至塔內(nèi)，其余部分經(jīng)產(chǎn)品冷卻器冷卻后送至儲罐。該物系屬易分離系，最小回流比，故操作回流比取最小回流比的2倍。塔釜采用間接蒸汽加熱，塔底產(chǎn)品經(jīng)冷卻后送至儲罐。<二>精餾塔的物料衡算1、原料液及塔頂、塔底產(chǎn)品的摩爾分率甲醇的摩爾質(zhì)量 M甲醇=32.04kg/ kmol 水的摩爾質(zhì)量 M水=18.02kg/kmolXF= XD=XW=2、原料液及塔頂、塔底產(chǎn)品的平均

2、摩爾質(zhì)量MF=0.273×32.04+（10.273）×18.02=21.85kg/kmolMD=0.9947×32.04+(10.9947）×18.02=31.96kg/kmolMW=0.002818×32.04+(10.002818)×18.02=18.06kg/kmol3、物料衡算原料處理量：F=kmol/h總物料衡算：F=D+W 115.57=D+W甲醇物料衡算：FXF=DXD+WXW 115.57×0.273=D×0.9947+W×0.002818聯(lián)立解得 D=31.48kmol/h w=84.

3、09kmol/h<三>塔板數(shù)的確定1、理論板數(shù)的求取由 y=及甲醇水在不同溫度下的汽液平衡組成溫度液相氣相a溫度液相氣相a92.90.05310.28347.0581.60.20830.62736.490.30.07670.40018.0380.20.23190.64856.1188.90.09260.43537.55780.28180.67755.3586.60.12570.48316.577.80.29090.68015.18850.13150.54557.9376.70.33330.69184.4983.20.16740.55866.2976.20.35130.73475.1

4、182.30.18180.57756.1573.80.4620.77564.0272.70.52920.79713.49680.77010.89622.5771.30.59370.81833.0866.90.87410.91941.64700.68490.84922.59am=4.83得到相平衡方程 y=因為泡點進(jìn)料，所以q=1 且Xq=XF=0.273且q點過相平衡線 則yq=0.645Rmin=0.94 取操作回流比 2、 求精餾塔的氣液相負(fù)荷1.88×31.48=59.18kmol/h V=(R+1)D =2.88×31.48=90.66kmol/h =L+F=59.

5、18+115.57=174.75kmol/h =V=90.66kmol/h3、 求操作線方程精餾段操作線方程 =+=0.6528Xn+0.3454提餾段操作線方程 =1.927Xn-2.614×10-35、逐板計算法求理論板數(shù)因為塔頂為全凝器 通過相平衡方程求 X1=再通過精餾段操作線方程 y2=0.6528X1+0.3454=0.9818 ，如此反復(fù)得y1=0.99947x1=0.9749y2=0.9818x2=0.9179y3=0.9446x3=0.7793y4=0.8541x4=0.5482y5=0.7032x5=0.3291y6=0.5603x6=0.2087<0.27

6、3當(dāng)X6<Xq后，改用相平衡方程與提餾段操作方程yn+1=1.927Xn-12.614×10-3計算.如此反復(fù)得y7=0.3995x7=0.1211y8=0.2308x8=0.0585y9=0.1101x9=0.025y10=0.0455x10=0.1474y11=0.02578x11=5.45×10-3y12=7.88×10-3x12=1.64×10-3<0.002818可得到進(jìn)料板位置 NF=6總理論板數(shù) NT=12 <包括再沸器>2、實際板層數(shù)的求取精餾段實際板層數(shù)：N精=8.39提餾段實際板層數(shù)：N提=10（不包括再沸器）

7、<四>精餾塔工藝條件及有關(guān)物性數(shù)據(jù)的計算1、 操作壓力計算塔頂操作壓力 PD=101.3+4=105.3KPa每層塔板壓力降 DP=0.7KPa進(jìn)料板壓力 PF=105.3+0.7×9=111.6KPa塔底壓力 Pw=PF+0.7×10=118.6KPa精餾段平均壓力 Pm=KPa提餾段平均壓力 Pm=KPa2、 操作溫度計算（內(nèi)插法得）根據(jù)甲醇-水的氣-液平衡組成表，再通過內(nèi)插法得：塔頂溫度 tD=64.79進(jìn)料板溫度 tF=78.3塔釜溫度 tw=99.6精餾段平均溫度 tm=提餾段平均溫度 tm=3、 平均摩爾質(zhì)量的計算塔頂平均摩爾質(zhì)量計算由XD=y1=0

8、.9947 通過相平衡方程求得 X1=0.9749MVDM=y1M甲+（1-y1）M水=0.9947×32.04+(1-0.9947) ×18.02=31.97Kg/KmolMLOM=X1M甲+（1-X1）M水=0.9749×32.04+(1-0.9749) ×18.02=31.69 Kg/Kmol進(jìn)料板平均摩爾質(zhì)量計算 通過逐板計算得進(jìn)料板yF=0.5603，再通過相平衡方程得XF=0.2087MVFM= yFM甲+（1-yF）M水=0.5603×32.04+（1-0.5603）×18.02=25.87Kg/KmolMLFM=XFM

9、甲+（1-XF）M水=0.2087×32.04+（1-0.2087×18.02）=20.95Kg/Kmol塔釜平均摩爾質(zhì)量的計算由Xw=0.002818 查平衡曲線得 yw=0.01346MVWM=ywM甲+（1-yw）M水=0.01346×32.04+（1-0.01346）×18.02=18.21Kg/KmolMLWM=XWX甲+（1-XW）M水=0.002818×32.04+（1-0.002818）×18.02=18.06Kg/Kmol精餾段平均摩爾質(zhì)量MVM=MLM=提餾段平均摩爾質(zhì)量MVM=MLM=4、平均密度計算氣相平均密度

10、計算由理想氣體狀態(tài)方程計算 即精餾段 rVM= Kg/m³提餾段 rvm= 液相平均密度計算液相平均密度按下式計算 即塔頂液相平均密度的計算 由tD=64.79 查手冊得 r甲=747.168Kg/m³ r水=980.613Kg/m³rLPM=Kg/m³進(jìn)料板液相平均密度計算 由tF=78.3 查手冊得 r甲=735.53 Kg/m³ r水=972.82 Kg/m³進(jìn)料板液相的質(zhì)量分率 rLFM=Kg/m³提餾段液相平均密度計算 由tw=99.6 查手冊得 r甲=716.36Kg/m³ r水=958.176 Kg/

11、m³rLWM= Kg/m³精餾段液相平均密度為rLM= Kg/m³提餾段液相平均密度rLM=Kg/m³5、液體平均表面張力的計算液相平均表面張力依下式計算 即 dLM=åXidi塔頂液相平均表面張力的計算 由tD=64.79查手冊得d甲=18.31mN/m d水=65.29Mn/mdLOM=XDd甲+（1-XD）d水=0.9947×18.31+0.0053×65.29=18.56mN/m進(jìn)料板液相平均表面張力的計算 由tF=78.3 查手冊得 d甲=17.0647mN/m d水=62.889mN/mdLFM=XFd甲+（1-

12、XF）d水=0.2087×17.0647+0.7913×62.889=53.32mN/m塔釜液相平均表面張力的計算 由tw=99.6 查手冊得 d甲=14.93mN/m d水=58.9mN/mdLWM=Xwd甲+(1-Xw)d水=0.002818×14.93+（1-0.2087）×62.889=53.32mN/m精餾段液相平均表面張力為dLM=mN/m提餾段液相平均表面張力為dLM=mN/m6、液體平均粘度計算液相平均粘度以下式計算，即mLM=åXimi塔頂液相平均粘度計算 由tD=64.79查手冊得m甲=0.3289mpa.s m水=0.44

13、79mpa.smLDM=XDm甲+（1-XD）m水=0.9947g（0.3289）+（1-0.9947）（0.4479）= 0.4825mLDM=0.3292mpa.s進(jìn)料板液相平均粘度計算 由tF=78.3查手冊得m甲=0.28193mpa.s m水=0.37084mpa.smLFM=XFm甲+（1-XF）m水=0.2087(0.28193)+(1-0.2087)(0.37084)=0.4557mLFM=0.35mpa.s由tw=99.6 查手冊得m甲=0.226mpa.s m水=0.289mpa.smLWM=Xwm甲+(1-Xw)m水=0.002818lg(0.226)+(1-0.0028

14、18)(0.289)=-0.5394mLWM=0.2888mpa.s精餾段液相平均黏度為mLM=mpa.s提餾段液相平均黏度為mLM=mpa.s<五>精餾塔的塔體工藝尺寸計算1、 塔徑的計算精餾段的氣液相體積流率為Vs= m³/sLs= m³/s提餾段的氣液相體積流率為Vs=m³/sLs= ×10-3 精餾段 umax= 式中C由C20求取，C20可通過查圖（P129頁）篩板塔的泛點關(guān)聯(lián)圖的橫坐標(biāo)功能參數(shù)取板間距HT=0.35m（通過篩板塔的的泛點關(guān)聯(lián)圖）（書P129 圖10-42）得到C20=0.068C=C20（）0.2=0.068

15、15;() 0.2=0.07646最大空塔氣速umax=取安全系數(shù)為0.8，則空塔氣速u=0.8umax=0.8×2.085=1.668m/sD=按標(biāo)準(zhǔn)塔徑圓整后 D=0.8m（據(jù)書P129 表10-1）塔截面積為AT=m²實際空塔氣速 u=(安全系數(shù)在允許范圍內(nèi)，符合設(shè)計要求)提餾段同理查閱得C20= =0.05161查表得 HT=0.35m C20=0.07C=C20()0.2=0.07()0.2=0.08602Umax=C=0.08602=2.84m/s同上取安全系數(shù)0.8 u=0.8 Umax=0.8×2.84=2.272m/sD=0.6076m 圓整取D

16、=0.8m 同上AT=0.5024實際空塔氣速u=（符合安全系數(shù)范圍，設(shè)計合理）2、精餾塔有效高度的計算精餾段有效高度為Z精=（N精-1）HT=（9-1）×0.35=2.8m提餾段有效高度為Z提=（N提-1）HT=（10-1）×0.35=3.15m在加料板上設(shè)一人孔，其高度為0.7m故精餾塔的有效高度為Z=Z精+Z提+0.7=2.8+3.15+0.7=6.65m<六>塔板主要工藝尺寸的計算1、溢流裝置計算因塔徑D=0.8，可選用單溢流弓形降液管，采用凹形受液盤堰長lw 取lw=0.6D=0.48m溢流堰高度hw 由hw=hLhow選用平直堰，堰上液層高度how=

17、取E=1.03 how=mm how=mm取板上清液高度為hL=60mm hw=60-7,35=0.05265m hw=60-11.31=0.04869m弓形降液管寬度wd和截面積Af由 查圖（P127頁 弓形降液管的寬度與面積圖）得 所以Af=0.052AT=0.052×0.5024=0.02612Wd=0.1D=0.1×0.8=0.08m所以依式計算液體在降液管中的停留時間精餾段：q= > 35s（故設(shè)計合理）提餾段：q= >35s(故設(shè)計合理)降液管低隙高度h。h。.= u。=0.08m/s精餾：h。=提餾：h。=故降液管設(shè)計合理，選用凹形受液盤hw=52

18、.65mm hw=48.69mm2、塔板布置塔板的分塊因D800mm,故塔板采用分塊式，塔板查表可知分為3塊邊緣區(qū)寬度確定取Ws=Ws=0.04m wc=0.03m開孔區(qū)面積計算Aa=2（）x=(wd+ws)=R=wc=故Aa=2（0.28）=0.3703篩孔計算及其排列選用d=3mm碳鋼板，取篩孔直徑d。=4.5mm篩孔按正三角形排列，取孔中心距t為 t=3.1d。=3,1×4.5=13.95mm篩孔數(shù)目n為 n=開孔率f=0.907（）2=0.907×（）2=9.44%氣體通過閥孔的氣速精餾段 u。=提餾段 u。=(七)塔板的流體力學(xué)驗算1、塔板壓降干板阻力hc計算：（

19、由查資料附表圖3-14干篩孔的流量系數(shù)有C。=0.82）hc=液柱hc=液柱氣體通過液層的阻力hl及hlua=F。= ua =1.4619/查資料附表圖3-15充氣系數(shù)關(guān)聯(lián)圖，由F。=1.4619 得b=0.59hc=bhL=b（hw+how）=0.59×（0.05265+0.00735）=0.0354m液柱ua=F。= ua=/查資料附表圖3-15充氣系數(shù)關(guān)聯(lián)圖，由F0=1.258得b=0.62hc=bhL=b（hw+how）=0.62液體表面張力的阻力hs及hs計算hs=hs=氣體通過每層塔板的液柱高度hp及hp計算hp=hp=氣體通過每層塔板的壓降DPp及DPp計算DPp =（

20、設(shè)計允許值）DPp=（設(shè)計允許值）2、 液面落差對于篩板塔，液面落差很小，且本方案的塔徑和液流量均不大，故可忽略頁面落差影響。3、液沫夾帶液沫夾帶量ev及ev計算按經(jīng)驗，一般hf=2.5hc=2.5×0.06=0.15mev=3.2=3.2=0.07986Kg液/Kg氣<0.1 Kg液/Kg氣ev=3.2=3.2=0.0489 Kg液/Kg氣<0.1 Kg液/Kg氣故在本設(shè)計中液沫夾帶量ev及ev在允許范圍內(nèi)4、漏液對篩板塔，漏液氣速（）由下式計算實際孔速u。=19.04m/s>穩(wěn)定系數(shù)K=實際孔速u。=18.73>穩(wěn)定系數(shù)K=5、液泛為防止塔內(nèi)發(fā)生液泛，降液

21、管內(nèi)液層高Hd及Hd應(yīng)服從下式Hdj（HT+hw） j取0.5；Hdj（HT+hw）j（HT+hw）=0.5×（0.35+0.03882）=0.19441m液柱j（HT+hw）=0.5×（0.35+0.04869）=0.199 m液柱而Hd=hp+hL+hd；Hd= hp+hL+hd板上不設(shè)進(jìn)口堰h(yuǎn)d=hd=hd=0.001m液柱Hd=hp+hL+hd=0.07629+0.06+0.001=0.13729m液柱<0.19441m液柱Hd= hp+hL+hd=0.0669+0.06+0.001=0.1279 m液柱<0.199m液柱故在本設(shè)計中不會出現(xiàn)液泛現(xiàn)象（八

22、）塔板負(fù)荷性能圖1.漏液線由得同理可得在操作范圍內(nèi)，任取幾個值，依上式計算出值，計算結(jié)果列于下表：Ls（Ls），0.00050.00100.00150.0020Vs，0.3400.3490.3570.364Vs，0.3340.3360.3380.340由上表數(shù)字即可作出漏液線2、液沫夾帶線以=0.1液/氣為限，求Vs-Ls關(guān)系如下由整理得同理可計算出整理得在操作范圍內(nèi)，任取幾個Ls（Ls）值，依上式計算出Vs值，計算結(jié)果列于下表：Ls（Ls），0.00050.00100.00150.0020Vs，0.8620.8250.7930.766Vs，0.8640.8220.7860.754由上表得出液

23、沫夾帶線3、液相負(fù)荷下限線對于平直堰，取液上液層高度how=0.006m，作為最小液體負(fù)荷標(biāo)準(zhǔn)，由下式得取E=1，則同理，據(jù)此作出氣體流量無關(guān)的垂直液相負(fù)荷下限圖4、液相負(fù)荷上限圖以=4s作為液體在降液管中停留時間的下線，由下式得故據(jù)此可以作出與氣體流量無關(guān)的垂直液相負(fù)荷上限圖5、液泛線令由式中，故在操作范圍內(nèi)，任取幾個值，依上式計算出值，計算結(jié)果列于下表0.00050.00100.00150.00201.2211.1861.1451.0951.3801.3321.2861.240由上表數(shù)據(jù)即可作出液泛線（5）<九>換熱器的設(shè)計1、冷凝器的選擇有機(jī)物蒸氣冷凝器設(shè)計選用的總體傳熱系數(shù)

24、一般范圍為5001500kcal/(.h.)本設(shè)計取k=600w/(.) 出料溫度：64.6（飽和氣）（飽和液）64.6冷卻水溫度：3040逆流操作：Dt1=34.6 Dt2=24.6Dtm=傳熱面積：A=在此溫度下，查化工原理<第三版>附錄得g甲=1200KJ/Kg，g水=2378 KJ/KgQ=wg=1.094×0.6657×0.9947×1220+（1-0.9947）×2378=0.7303×1226=895.35KJ/sA=設(shè)備型號公稱直徑公稱壓力管程數(shù)管子根數(shù)中心排管數(shù)管程流通面積換熱管長度計算換熱面積f25×2

25、.5600mm1.6MPa2232160.03643000mm52.82、再沸器的選擇選用120飽和水蒸氣加熱，傳熱系數(shù)取K=600w/(.)料液溫度：99.6100 熱流體溫度：120120逆流操作：Dt1´=20 Dt2´=20.4 Dtm´=同上w´=rv´Vs´=0.8427×0.6586=0.555Kg/sg´=xwg甲+（1-xw）g水 查表知此溫度下g甲=1100KJ/Kg g水=2400 KJ/Kgg´=0.002818×1100+（1-0.002818）×2400=2

26、396 KJ/Kgq´=w´g´=2396×0.555=1329.8KJ/sA´=設(shè)備型號公稱直徑公稱壓力管程數(shù)管子根數(shù)中心排管數(shù)管程流通面積換熱管長度計算換熱面積f25×2.5700mm4.00MPa4322210.02534500mm111.2（十）餾塔接管尺寸計算1、接管進(jìn)料管的結(jié)構(gòu)類型很多，本設(shè)計采用直管進(jìn)料管，管徑計算如下：D= 取=1.6m/s25進(jìn)料，此溫度下r甲=786.9Kg/m3 r水=996.95 Kg/m3 （查化工原理（上）附錄）rLP=Vs=D=查標(biāo)準(zhǔn)系列 取f32×3回流管 采用直管回流管 取u

27、R=1.6m/sDR=查表取f89×4塔釜出料管 取uw=1.6m/sDw=查表取f38×3塔頂蒸氣出料筒 直管出氣，取出口氣速u=20m/sD=查表取f273×8塔釜進(jìn)氣管 采用直管 取氣速u=23m/sD=查表取f273×8法蘭本設(shè)計常壓操作，采用進(jìn)料管接管法蘭2、筒體與封頭筒體壁厚選6mm，所用材質(zhì)為A3 封頭本設(shè)計采用橢圓形封頭，由公稱直徑DN=800mm,曲面高度200mm，直邊高度25mm，內(nèi)表面積0.757，容積0.08m³，選取風(fēng)同樣DN800×6。（選自常用化工單元設(shè)備設(shè)計附表1（A）橢圓封頭尺寸與質(zhì)量（JB/T47

28、29-94）除沫器當(dāng)空塔氣速較大帶液現(xiàn)象嚴(yán)重，以及工藝過程中不許出塔氣速夾帶霧滴的情況下，設(shè)置除沫器，以減少液體夾帶損失，確保氣體純度，保證后續(xù)設(shè)備的正常操作。常用除沫器有折流板式除沫器，絲網(wǎng)除沫器以及程流除沫器。本設(shè)計采用絲網(wǎng)除沫器，其具有比面積大、質(zhì)量輕、空隙大及使用方便等優(yōu)點。設(shè)計氣速選?。海禂?shù)=0.107，除沫器直徑：吊柱塔徑D=800mm，可選用吊柱250Kg，S=600mm，L=3150mm，H=900mm，材料用A3裙座塔底采用裙座支撐，裙座的結(jié)構(gòu)性能好，連接處產(chǎn)生的局部阻力小，所用它是塔設(shè)備的主要支座形式，為了制作方便，一般采用圓筒形。由于裙座內(nèi)徑>800mm，故裙座壁

29、厚取16mm基礎(chǔ)環(huán)內(nèi)徑：基礎(chǔ)環(huán)外徑：圓整：Dbi=1600mm，Db。=2200mm；基礎(chǔ)環(huán)厚度，考慮到腐蝕余量取18mm；考慮到再沸器，裙座高度取3m（H2=3m），此角螺栓直徑取M30人孔人孔是安裝和檢修人員進(jìn)出塔的惟一通道，人孔的位置應(yīng)便于進(jìn)入任何一層塔板，由于設(shè)置人孔處塔間距離大且人孔設(shè)備過少會使制造時塔體的彎曲度難于達(dá)到要求 塔中共19塊板，設(shè)置2個人孔，第6塊和第7塊板之間設(shè)一塊，第12塊和第13塊板之間設(shè)一塊，每個孔直徑為450mm，人孔處的板間距取700mm，塔頂和塔釜各設(shè)一人孔，裙座上再開2個人孔，直徑為450mm，人孔伸入塔內(nèi)部與塔內(nèi)壁修平，其邊緣倒棱和磨圓，人孔法蘭的密封

30、面及墊片用材與塔的接管法蘭相同。進(jìn)料段進(jìn)料板設(shè)置在第5塊板和第7塊板之間，高度為700mm3、塔總體高度設(shè)計塔的頂部空間高度塔的頂部空間高度是指塔頂?shù)谝粚铀P到塔頂封頭的直線距離，塔頂部空間高度設(shè)1200mm塔的底部空間高度塔的底部空間高度是指塔底最末一層塔盤到塔底下封頭切線的距離，釜液停留時間取5minHb=塔體高度H塔高，m；沒人孔處的板間距，m；n實際塔板數(shù)；板間距，m；裙座高度，m；進(jìn)料板處板間距，m；人孔數(shù)；塔底空間高度，m；塔頂空間高度。ag an employment tribunal clai Emloyment tribunals sort out disagreements

31、 between employers and employees. You may need to make a claim to an employment tribunal if: you don'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

32、 the organisations listed under Further 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

33、about making a claim to an employment tribunal, you should get help straight away from one of the organisations listed under Further help. ation about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven't appealed a

34、gainst the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any compensation 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

35、the date when the event you are complaining 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 a

36、n agreement where you pay their fee out of your compensation if you win the case. This is known as a damages-based agreement. In England and Wales, your solicitor can't charge you more than 35% of your compensation  if you win the case.you're clear about the terms of the agreement.

37、 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 e-mail, click on nearest CAB.For more information about making a claim to an employment tribunal, see Employment tribun

38、als.The (lack of) air up there Watch m Cay man Islands-based Webb, the head of Fifa's anti-racism taskforce, is in London for the Football Association's 150th anniversary celebrations and will attend City's Premier League match at Chelsea on Sunday."I am going to be at the match tom

39、orrow and I have asked to meet Ya ya Toure," he told BBC Sport."For me it's about how he felt and I would like to speak to him first to find out what his experience was."Uefa has opened disciplinary proceedings against CSKA for the "racist behaviour of their fans&qu

40、ot; during City's 2-1 win.Michel Platini, president of European football's governing body, has also ordered an immediate investigation into the referee's actions.CSKA said they were "surprised and disappointed" by Toure's complaint. In a statement the Russian side adde

41、d: "We found no racist insults from fans of CSKA."Age has reached the end of the beginning of a word. May be guilty in his seems to passing a lot of different life became the appearance of the same day; May be back in the past, to oneself the paranoid weird belief disillusionment, these da

42、ys, my mind has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it.一字開頭的年齡已經(jīng)到了尾聲。或許是愧疚于自己似乎把轉(zhuǎn)瞬即逝的很多個不同的日子過成了同一天的樣子；或許是追溯過去，對自己那些近乎偏執(zhí)的怪異信念的醒悟，這些天以來，思緒一直很凌亂，在腦海中不斷糾纏。總

43、覺得自己似乎應(yīng)該去做點什么，或者寫點什么。二十年的人生軌跡深深淺淺，突然就感覺到有些事情，非做不可了。The end of our life, and can meet many things really do?而窮盡我們的一生，又能遇到多少事情是真正地非做不可？During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are opt

44、ional; Junior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn't really grow up, it seems is not so important; Then in high school, think don't want to give vent to out your i

45、nner voice can be in the high school children of the feelings in a period, but was eventually infarction when graduation party in the throat, later again stood on the pitch he has sweat profusely, looked at his thrown a basketball hoops, suddenly found himself has already can't remember his appe

46、arance.童年時，覺得壓歲錢和新衣服是過年必備，但是隨著年齡的推進(jìn)，會越來越發(fā)現(xiàn)，那些東西根本就可有可無；初中時，以為要有一場暗戀才意味著真正的成長，但三年過去后，自己心平氣和的寫同學(xué)錄的時候，突然就發(fā)現(xiàn)是不是真正的成長了，好像并沒有那么重要了；然后到了高中，覺得非要吐露出自己的心聲才能為高中生涯里的懵懂情愫劃上一個句點，但畢業(yè)晚會的時候最終還是被梗塞在了咽喉，后來再次站在他曾經(jīng)揮汗如雨的球場，看著他投過籃球的球框時，突然間發(fā)現(xiàn)自己已經(jīng)想不起他的容顏。Originally, this world, can produce a chemical reaction to an event, i

47、n addition to resolutely, have to do, and time.原來，這個世界上，對某個事件能產(chǎn)生化學(xué)反應(yīng)的，除了非做不可的堅決，還有，時間。A person's time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dis

48、like his cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a self-righteous spiritual.一個人的時候，自己的想法總是特別地清晰。想要的，不想要的，界限明確，好像沒有什么可以撼動自己。也曾經(jīng)好像已經(jīng)下定了決心去做某件事，但更多的時候

49、是最后又打起了退堂鼓。嫌惡過自己的怯懦，最終卻發(fā)現(xiàn)有很多緣分，有很多錯過，好像冥冥之中真的已經(jīng)注定。那些曾經(jīng)所謂的非做不可，只是青蔥年華里自己給自己注射的一支強心劑，或者說，是自以為是的精神寄托罷了。At the moment, the sky is dark, the air is fresh factor after just rained. Suddenly thought of blue plaid shirt; Those were broken into various shapes of stationery; From the corner at the beginning o

50、f deep friendship; Have declared the end of the encounter that haven't start planning. Those years, those days of do, finally, like youth, will end in our life.此刻，天空是陰暗的，空氣里有著剛下過雨之后的清新因子。突然想到那件藍(lán)格子襯衫；那些被折成各種各樣形狀的信紙；那段從街角深巷伊始的友誼；還有那場還沒有開始就宣告了終結(jié)的邂逅計劃那些年那些天的非做不可，終于和青春一樣，都將在我們的人生中謝幕。Baumgartner the d

51、isappointing news: Mission aborted. r plays an important role in this mission. Starting at the ground, conditions have to be very calm - winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmo

52、sphere (the troposphere) where our day-to-day weather lives. It will climb higher than the tip of Mount Everest (5.5 miles/8.85 kilometers), drifting even higher than the cruising altitude of commercial airliners (5.6 miles/9.17 kilometers) and into the stratosphere. As he crosses the boundary layer

53、 (called the tropopause),e can expect a lot of turbulence. We often close ourselves off when traumatic events happen in our lives; instead of letting the world soften us, we let it drive us deeper into ourselves. We try to deflect the hurt and pain by pretending it doesnt exist, but although we can

54、try this all we want, in the end, we cant hide from ourselves. We need to learn to open our hearts to the potentials of life and let the world soften us.生活發(fā)生不幸時，我們常常會關(guān)上心門；世界不僅沒能慰藉我們，反倒使我們更加消沉。我們假裝一切仿佛都不曾發(fā)生，以此試圖忘卻傷痛，可就算隱藏得再好，最終也還是騙不了自己。既然如此，何不嘗試打開心門，擁抱生活中的各種可能，讓世界感化我們呢？Whenever we start to let our fe

55、ars and seriousness get the best of us, we should take a step back and re-evaluate our behavior. The items listed below are six ways you can open your heart more fully and completely.當(dāng)恐懼與焦慮來襲時，我們應(yīng)該退后一步，重新反思自己的言行。下面六個方法有助于你更完滿透徹地敞開心扉。Whenever a painful situation arises in your life, try to embrace it

56、 instead of running away or trying to mask the hurt. When the sadness strikes, take a deep breath and lean into it. When we run away from sadness thats unfolding in our lives, it gets stronger and more real. We take an emotion thats fleeting and make it a solid event, instead of something that passe

57、s through us.當(dāng)生活中出現(xiàn)痛苦的事情時，別再逃跑或隱藏痛苦，試著擁抱它吧；當(dāng)悲傷來襲時，試著深呼吸，然后直面它。如果我們一味逃避生活中的悲傷，悲傷只會變得更強烈更真實悲傷原本只是稍縱即逝的情緒，我們卻固執(zhí)地耿耿于懷By utilizing our breath we soften our experiences. If we dam them up, our lives will stagnate, but when we keep them flowing, we allow more newness and greater experiences to blossom.深呼吸能減緩我們的感受。屏住呼吸，生活停滯；呼出呼吸，更多新奇與經(jīng)歷又將拉開序幕。2. Embrace the uncomfortable We all know what that