Chemical Processes

Info Lkc

Wed, 21 Sep 2011 19:43:23 | Chemical Processes

H 3.5 atm 13800 at mole fraction 2.536 x 10-4 mol C0jmol H 3.5 atm 13800 at mole fraction 2.536 x 10-4 mol C0jmol

H Seb

Mon, 19 Sep 2011 19:41:43 | Chemical Processes

O2 g,450 C H2 HOi 450 C 13.36 kJ mol N2 g,450 C H3 HNi 450 C 12.69 kJ mol Out SO2 g,550 C Ha j Cp dT 24.79 kJ mol O2 g,550 C H5 HO 550 C 16.71 kJ mol N2 g,550 C H6 HfN 550 C 15.81 kJ mol 1249 -98.28 673 24.796 179.8 16.711 7227 15.808 1249 35.336 - 19 Assume system is adiabatic, so that lost from reactor Qgained by cooling water 8.111 x 104 - mw 167.5 -104.8 mw 1290 kg min cooling water If elemental species were taken as references, the heats of formation of each molecular species would have to...

Info Jpx

Fri, 15 Jul 2011 15:10:50 | Chemical Processes

c. In a real reactor, the final solution temperature will be less than the value calculated in part b, due to heat loss to the surroundings. The final temperature will therefore be less than 47.1oC. 9.45 a. H2SO4 aq 2NaOH aq Na2SO4 aq 2H2O aq Basis 1 mol H2SO4 fed Reference states Na s ,H2 g ,S s ,O2 g at 25 C H2SO4 aq,r 49,25 c nH b1 mol H2 SO4 Atffo r 49 kJmol l -811.3 - 73.3 -884.6 kJ 49 AHf o NaOH aq,r 19,25 c 2 -426.6 - 42.8 -938.8 kJ 38 AHf Na2SO4 aq, r 89,400 Cj

Info Ybc

Thu, 14 Jul 2011 11:30:03 | Chemical Processes

0.37 4.286 x 106 1.586 x 106 g HCHO h 5.281 x 104 mol HCHO h 0.01 4.286 x 106 4.286 x 106 g CH3OH h 1338 mol CH3OH h 0.62 4.286 x 106 2.657 x 106 g H2O h 1.475 x 105 mol H2O h Scale factor 2 016 10 m h 2657 h -75.9 mol 8.69 a For 24 C and 50 relative humidity, from Figure 8.4-1, Absolute humidity 0.0093 kg water kg DA, Humid volume 0.856 m3 kg DA Specific enthalpy 48-0.2 kJ kg DA 47.8 kJ kg DA, Dew point 13 C,T b 17oC d Water evaporates, causing your skin temperature to drop. Tskin 13oC Twb ....

contd Xfk

Mon, 04 Apr 2011 20:23:14 | Chemical Processes

Info Fvz

Mon, 04 Apr 2011 19:32:51 | Chemical Processes

2.3 Assume that a golf ball occupies the space equivalent to a 2 in x 2 in x 2 in cube. For a classroom with dimensions 40 ft x 40 ft x 15ft

Info Bzv

Sun, 03 Apr 2011 20:36:52 | Chemical Processes

The reactor pressure is low enough to have a negligible effect on enthalpy. The reactor pressure is low enough to have a negligible effect on enthalpy. Yes. Pure water can only exist as vapor at 1 atm above 100 C, but in a mixture of gases, it can exist as vapor at lower temperatures. C9H2o l 14O2 g 9CO2 g 10H2O l AHr -6124 kJ mol When 1 g-mole of C9H20 l and 14 g-moles of O2 g at 25 C and 1 atm react to form 9 g-moles of CO2 g and 10 g-moles of water vapor at 25 C and 1 atm, the change in...

C Pub

Sun, 03 Apr 2011 20:06:54 | Chemical Processes

SUBROUTINE FLASN2 SF, SL, SV, T, P, Q REAL NF, NL, NV DIMESION SF 3 , SL 3 , SV 3 COMMON A1, B1, C1, C2, CP1, CP2, NV1, NV2 C Vapor Pressure PV1 10. A1 - B1 T - 273.15 C1 PV2 10. A2 - B2 T - 273.15 C2 C Product fractions XL1 P - PV2 PV1 - PVS XV1 XL1 PM P C Feed Variables NF SF 1 SF 2 XF1 SF 1 NF C Product flows NL NF XF1 - XV1 XL1 - XV1 NV NF - NL SL 1 XL1 NL SL 2 NL - SL 1 SY 1 XY1 NY SY 2 NV - SY 1 SL 3 T SV 3 T C Energy Balance Q Q T - SF 3 NV1 XV1 HV2 1 - XV1 NV

Info Jwb

Sun, 03 Apr 2011 00:43:49 | Chemical Processes

AH 2n1HH1 -2n1HH1 0 -8504 3246m 0 m 2.62 kg h b. When cold water contacts hot gas, heat is transferred from the hot gas to the cold water lowering the temperature of the gas the object of the process and raising the temperature of the water. 8.28 2 C, 15 rel. humidity pHO 0.15 5.294 mm Hg 0.7941 mm Hg y H2o . 0.7941 760 1.045 x 10-3 mol H2O mol inhaled air 8.28 2 C, 15 rel. humidity pHO 0.15 5.294 mm Hg 0.7941 mm Hg y H2o . 0.7941 760 1.045 x 10-3 mol H2O mol inhaled air

Info Jmz

Fri, 01 Apr 2011 12:10:31 | Chemical Processes

-31 J 23 J transferred from the air -31 J 23 J transferred from the air b h 10 kg H20 min 0 Q25 kg H20 kg dry air, 5QO c 400 kg dry air min gt H 116- 1.1 115 kJ kg dry air, Twb 33 C, hr 32 , Tdew point 28.5 C c Tdb 10 C , saturated ha 0.0077 kg H2O kg dry air, H 29.5 kJ kg dry air 400 kg dry air 0.0250- 0.0077 kg H2O k H n d d - -- - 6.92 kg H2O min condense References Dry air at 0 C, H2O at 0 C References Dry air at 0 C, H2O at 0 C

Info Jfd

Thu, 31 Mar 2011 18:10:15 | Chemical Processes

dA dy J dx 2 1 - y2 dy A m2 2 J -y l - y2 dy Table of integrals or trigonometric substitution -ih-1

Info Lbu

Thu, 31 Mar 2011 00:27:43 | Chemical Processes

b 0.011 - 2.11 x 10-3 5 4.50 x 10- b R 43 y 2.11 x 10-3 43 4.50 x 10-4 0.092 kg H2O kg 1200 kg h 0.092 kg H2O kg 110 kg H2O h 2.33 a lnT lna bln lt T a lt b ln T2 - ln Tj ln lt lt 2 - ln lt ln120 - ln210 ln40 - ln25 -1.19 ln a ln T - b ln lt ln210 - -1.19 ln 25 a 9677.6 T 9677.6 lt lt 9 b T 9677.6 lt U9 lt 9677.6 T 0 8403 T 85o C lt 9677.6 85 08403 53.5 L s T 175o C lt 9677.6 175 08403 29.1 L s T 290o C lt 9677.6 290 08403 19.0 L s c The estimate for T 175 C is probably closest to the real...

Info Uhd

Wed, 30 Mar 2011 03:40:59 | Chemical Processes

10.0 lb-moles C9H12 h 2.50 lb-moles C3H h 4.17 lb-moles C4H10 h 30.0 lb-moles QHg h 46.7 lb-moles h 21.4 C9H12 5.4 C3H6 8.9 C4H10 64.3 C6H6 2.50 lb-moles C3H6 h U Overhead from T1 3 , V 37.5 C3H6 - 4.17 lb-moles C4H10 h 3 6 2.50 lb-moles C3H6 h U Overhead from T1 3 , V 37.5 C3H6 - 4.17 lb-moles C4H10 h 3 6 46.7 lb-moles h 21.4 C9H12 5.4 C3H6 8.9 C4H10 64.3 C6H6

Info Qup

Tue, 29 Mar 2011 13:02:31 | Chemical Processes

CO2 y3 0.531 4.052 0.131 mol CO2 mol, Tc 304.2 K Pc 72.9 atm H2G y4 0.531 4.052 0.131 mol H2G mol, Tc 647.4 K Pc 218.3 atm N2 y5 2.99 4.052 0.738 mol N2 mol, Tc 126.2 K Pc 33.5 atm Tc' 0.131 304.2 K 0.131 647.4 K 0.738 126.2 K 217.8 K Pc' 0.131 72.9 atm 0.131 218.3 atm 0.738 33.5 atm 62.9 atm Pr' 1.21

Info Blh

Fri, 25 Mar 2011 11:33:26 | Chemical Processes

If C, is independent of T C, - Rg T - 25o C b Reference states CH4 g , N2 g , O2 g , H2O l , CO2 g at 25oC We will use the values of AH0 given in Table B.1, which are based on H2O l as a combustion product, and so must choose the liquid as a reference state for water.

Info Rsx

Fri, 25 Mar 2011 00:55:56 | Chemical Processes

0.720 mol CO, mol 0.0257 mol CO mol 0.000592 mol Sq mol 0.254 mol O, mol O balance 2 n4 100 2 0.720 0.0257 2 0.000592 2 0.254 n5 20 excess O2 1.20 74.57 0.0592 0.25 n2 n4 gt 183.6 mol H, 4 144.6 mol O2, 5 91.8 mol H2O Total moles in feed 258.4 mol C H S gt 28.9 C. 71.1 H. 0.023 S

Info Btu

Thu, 24 Mar 2011 02:40:06 | Chemical Processes

b. n - C5H12 g O2 g 5CO g 6H2O l 5 -110.52 6 -285.84 - -146.4 kJ mol -2121.2 kJ mol 19 C6H14 l yO2 g 6CO2 g 7H2O g AH 6 AH 7 AH - AH f r v f CO2 v f H2O g v f c6h,4 l 6 -393.5 7 -241.83 - -198.8 kJ mol -3855 kJ mol Na2SO4 l 4CO g Na2S l 4CO2 g AH AH 4 aHo - H

Info Erh

Tue, 22 Mar 2011 01:22:51 | Chemical Processes

Hp n2 AHv H2O 25oC n stack gas Cp stack gas Tstack gas 25 C Hp n2 AHv H2O 25oC n stack gas Cp stack gas Tstack gas 25 C

Info Pce

Tue, 22 Mar 2011 01:22:31 | Chemical Processes

C balance n2 82.00 1 18.00 2 n2 118.00 mol CO2 C balance n2 82.00 1 18.00 2 n2 118.00 mol CO2 H balance 2n3 82.00 4 18.00 6 n3 218.00 mol H2O 20 excess air, complete combustion n4 0.2 227 mol O2 45.40 mol O2 N2 balance n5 0.79 1297.14 1024.63 mol N2 Extents of reaction nCH_ 82 mol, nC H 18 mol Reference states CH4 g , C2H6 g , N2 g , O2 g , H2O l at 298 K We will use the values of AHf given in Table B.1, which are based on H2O l as a combustion product, and so must choose the liquid as a...

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