q-line for subcooled liquid

If feed is a subcooled liquid, q>1 (i.e., L' augmented by vapor condensation), "slope" of feed equation is positive; If feed is a superheated vapor, q<0 (i.e., L' decreased evaporation), "slope"

subcooled liquid feed on the distillation column performance. All q-lines are parallel and meet the y = x line at the corresponding value of xF, 

May 22,  · If the temperature of the liquid is lower than the saturation temperature for the existing pressure, it is called either a subcooled liquid or a compressed liquid. The term

Note that qcan be less than zero (superheated vapor) or greater than unity (subcooled liquid). The slope of the q-line is q/(q - 1). The construction of the two operating lines and the q-line is performed in Excel as follows: 1. The rectifying-section operating line is drawn using Eqs. 1 and 2 and the specifi ed values of x D and R.

There is no “ideal feed condition” for distillation tower design. · Let us check out the cases: · Sub Cooled Feed (q>1): · Well, a sub cooled feed at the feed tray 

vapor) or greater than unity (subcooled liquid). The slope of the q-line is q/(q – 1). The construction of the two operating lines and the.

a) Subcooled liquid Vapor to vapor, liquid to liquid. (d) Dew point vapor However, if the feed condition is fixed, q-line is also fixed and then we.

Figure 2: Examples of q-line slopes The q-line (depicted in blue in Figure 1) starts at the x = y line and intersects the starting point of the rectifying section operating line. The parameter q is the mole fraction of liquid in the feed, and the slope of the q-line is q / (q - 1).

6) Subcooled Reflux. 7) Multiple Feeds Rectifying Section: Operating line. Slope=L/V=R/(R+1)<1 q-line reflux and all the exiting liquid as boilup.

Liquid can lose heat and subcool in the receiver, filter drier, and liquid line before it gets to the metering device. However, if there is any refrigerant vapor in the receiver, the subcooled liquid will not subcool further. The vapor will recondense to a liquid in the receiver. Both the liquid and the vapor will reach a new saturation

The y-intercept of the q-line for a subcooled liquid feed is negative O zero positive ; Question: The y-intercept of the q-line for a subcooled liquid feed is negative O zero positive . This problem

Subcooled liquid refers to that phase of a substance where it exists in liquid form at a temperature below its boiling point at the system pressure. The saturated liquid is a liquid that is about to vaporize, which means any decrease in pressure without changing its temperature causes it to boil.

At x=0.5 another small line is drawn that represents the feed or `q' line. subcooled liquid the slope of the feed line is even positive, the same for a 

The y-intercept of the q-line for a subcooled liquid feed is negative O zero positive ; Question: The y-intercept of the q-line for a subcooled liquid feed is negative O zero positive . This problem has been solved! See the answer See the answer See the

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Slope of the q-line is: Answer (a) V/F denotes the vapor fraction, hence the liquid fraction is=(1-0.37)=0.63 Slope of q-line: Feed is 50% ethanol and is a subcooled liquid. One mole of vapor must be condensed to heat 12 moles of feed to their boiling point. f. Feed is 20% ethanol, and 70% is vaporized in a flash distillation system.

Jan 08,  · Y = (q/(q-1))X - (Xf/(q-1)) Pick an arbitary value for X just a little to either side of Xf. You now have two points to draw the q line. You will need to get your hands on a boiling point

FIG. 13-32 All five cases of q lines; (1) superheated-vapor feed, (2) saturated-vapor feed, (3) partially vaporized feed, (4) saturated-liquid 

Step 6: Draw the line with slope 0.5 which is the rectifying section OL. Step 7. Draw the stripping section operating line from the Bottoms composition to the intersection of the rectifying section OL and the q-line. y drawing a x Solution: Step 1: From x D locate x 1 and y 1 horizontal line to the equilibrium condition for stage 1. Step 2

The q-line (depicted in blue in Figure 1) starts at the x = y line and intersects the starting point of the rectifying section operating line. The parameter q is the mole fraction of liquid in the feed,

The y-intercept of the q-line for a subcooled liquid feed is negative O zero positive ; Question: The y-intercept of the q-line for a subcooled liquid feed is negative O zero positive . This problem has been solved! See the answer See the answer See the answer done loading. Show transcribed image text