Condenser total

Cohimn pressure at the reflux drum is established so as to condense totally the overhead vapor or some fraction thereof. Flash-zone pressure is approximately 69 kPa (10 psia) higher. Crude-oil feed temper-... [Pg.1330]

Total Condenser Reboiler Partial Condenser Total... [Pg.22]

The ether extracts are combined the ether is removed by distillation (Note 12), and the dark red tarry residue subjected to steam distillation. Some 40-50 ml. of distillate is collected after solid quinone no longer appears in the condenser (total volume about 150 ml.). [Pg.24]

A leak rate of 0.8-0.9 mbar L/s is already larger than could be pumped off by a reasonable pumpset in this size of freezedrying plant. The partial pressure of air, p.m, must be small compared with the water vapor pressure. At 0.28 mbar total pressure pair should be 0.03-0.04 mbar. A vacuum pump which can pump 0.8-0.9 mbar L/s at 0.03-0.04 mbar must have a pumping speed of -100 m3/h, which is unusually large for a 200 L chamber. A vacuum pump with a 40 m3/h pumping speed will theoretically evacuate a chamber and condenser (total 500 L) in -6 min down to 0.1 mbar. Even if it takes 10 min with the loaded chamber, the pumping speed of the pump is sufficient. With this pump, the leak rate of the plant should not exceed 0.4 mbar L/s, which would be pumped at -0.04 mbar. [Pg.114]

No. of Ideal Separation Stages (including a reboiler and a total condenser) Total Fresh Feed, B0, kmol Feed Composition, xB0, mole fraction Column Holdup, kmol ... [Pg.177]

In the condenser the vapour is condensed totally. Thus the mole fractions in the distillate D and in the reflux R are... [Pg.475]

BLOCK RADFRAC RADFRAC PARAM NSTAGE = 28 COL-CONFIG CONDENSER = TOTAL FEEDS FEED 14... [Pg.271]

PARAM NSTAGE=41 HYDRAULIC=YES COL-CONFIG CONDENSER=TOTAL FEEDS FEED 19... [Pg.317]

Column pressure at the reflux drum is established so as to condense totally the overhead vapor or some fraction thereof. Flash-zone pressure is approximately 69 kPa (10 psia) higher. Crude oil feed temperature at flash-zone pressure must be sufficient to vaporize the total distillates plus the overflash, which is necessary to provide reflux between the lowest sidestream-product drawoff tray and the flash zone. Calculations are made by using the crude oil EFV curve corrected for pressure. For the example being considered, percent vaporized at the flash zone must be 53.1 percent of the feed. [Pg.107]

Evaporation-condensation (total sphere surface neck) 2a ( )-[ ][Pg.794]

Intermediate Reboilers and Condensers A distillation column of the type shown in Fig. 13-2a, operating with an interreboiler and an intercondenser in addition to a reboiler and a condenser, is diagramed with the solid lines in Fig. 13-38. The dashed lines correspond to simple distillation with only a bottoms reboiler and an overhead condenser. Total boiling and condensing heat loads are the same for both columns. As shown by K ihan [Am. Inst. Chem. Eng. J. Symp. Ser. 76, 192, 1 (1980)], the adclition of interreboilers and intercondensers increases thermodynamic efficiency but requires additional stages, as is clear from the positions of the operating lines in Fig. 13-38. [Pg.1093]

The next column parameters were imposed as follows feed specification liquid at bubble point feed flow rate 0.0053 kmol s" side stream flow rate 0.001455 kmol s" type of condenser total condenser pressure 760 mm Hg reflux ratio 3 type of reboiler total reboiler heat duty 417 kW bottom liquid volume 0.146 m tray surface (for top and bottom sections) 0.451 m tray surface (for right and left side of the dividing wall) 0.2255 m weir height 0.025 m hole diameter 0.002 m. [Pg.315]

Concerning the first condensations, total yields are in accord with the yield formation of 136 in Scheme 52. Thus enamine is formed to the prejudice of the dimer. [Pg.86]

Simple distillation Total (liquid product) condenser Total (liquid product) reboiler 80 Stages... [Pg.412]

Simple distillation Total condenser Total reboiler 15 Stages... [Pg.423]

Consider the case of an existing column such as the one shown in Fig. 2-3. Suppose that the specifications are taken to be (1) the total number of stages and the location of the feed plate, (2) the complete definition of the feed (the total-flow rate, composition, and thermal condition), (3) the reflux rate, (4) the distillate rate, (5) the column pressure, and (6) the type of condenser (total or partial). On the basis of this set of specifications, it is desired to find the resulting compositions of the distillate and bottom products. [Pg.276]

Btu/hr. Similarly, if heaters for stages 2 and 3 in Fig. 7.10b are removed by converting the two total condensers to partial condensers, total heating duty is 904,000 Btu/hr (20% greater than the no-recycle case), and cooling duty is... [Pg.536]

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