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For a binary set of components you calculate the feed tray using the McCabe Thiele method. For more complex systems you would need to use a process simulator and perform a sensitivity analysis to determine the optimum feed tray.
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What is a rectifying tray in a distillation column?
a section above the feed tray called rectifying section and a trays which are above the feed tray called rectifying trays.
What should you do if your kerosene flash is increasing in the column?
By flash, it is assumed you mean the amount flashed in the flash zone after entering a column. If the amount flashed is more than you desire, lower the feed temperature. If the feed is some amount of saturated liquid and vapor, you will want to increase the percentage of liquid fed to the column. This applies to a general distillation column with more flash than desired.If this is a crude oil atmospheric distillation column, and you are getting too much kerosene in a side draw, your cut point probably does not meet the required specification. In this case you will need to adjust your pumparound rates and/or increase the amount of reflux.
How do you locate feed tray in distillation?
In order to locate the feed tray in distillation, you need to calculate the field tray by using MCcabe Thiele field method. For more complex systems you need to use process simulators and perform a sensitivity analysis to determine the optimum feed tray.
Why Cassegrain feed is used with parabolic reflector?
To allow the feed to be placed at a convenient point
What is a feed through capacitor?
A feed through capacitor is a type of capacitor (if you don't know how a capacitor works, look this up before going on) for bypassing RF voltage frequencies to ground of a transmitters chassis. It is built by putting a dielectric around a conductor and encasing it in a metallic tube.. so that the conductor is one plate and the outer tube is the second plate. They are shown in a schematic diagram by a straight line and a half moon to the side much like standard capacitor with the exceptions there are three connections. Two for the conductor plate and usually one for the outer shield. The higher frequencies that travel down the conductor plate 'pass through' (no current flows through the dielectric of a capacitor, unless it is leakage current or breakdown current) the dielectric to the outer case (typically grounded), while the lower frequencies (and DC) continue on through the conductor. So, in effect, what a bypass capacitor does is pass the DC current through it while bypassing the AC to ground of the chassis. The value of the capacitor will determine the capacitive reactance and what frequencies will pass more freely to ground.
What is a batch distilation column?
This is a distillation column that doesn't have a continuous feed. The material that is to be distilled will typically be in a round bottom still at the end of the column.
What is a rectifying tray in a distillation column?
a section above the feed tray called rectifying section and a trays which are above the feed tray called rectifying trays.
Why you people introduce feed in distillation column from bottom?
It depends on what you are trying to distill. If your heavy constituents don't require as many steps to separate (sometimes a simple reboiler will do it) as your lighter constituents, you will feed closer to the bottom of the column.
Why is the feed in a distillation column introduced from the bottom?
This is not a rule. it is depend upon the feed conditions. eg. feed at 1. saturated liquid (cold) 2. partial vapors 3. Vapours 4. saturated vapors 5 at boiling point
What should you do if your kerosene flash is increasing in the column?
By flash, it is assumed you mean the amount flashed in the flash zone after entering a column. If the amount flashed is more than you desire, lower the feed temperature. If the feed is some amount of saturated liquid and vapor, you will want to increase the percentage of liquid fed to the column. This applies to a general distillation column with more flash than desired.If this is a crude oil atmospheric distillation column, and you are getting too much kerosene in a side draw, your cut point probably does not meet the required specification. In this case you will need to adjust your pumparound rates and/or increase the amount of reflux.
Why does the diameter of distillation column vary at different location?
A distillation column has flows of materials going up and down the plates or packing. The flow across each plate or section of packing is an essential factor in the optimization calculations and design. Diameter is one of these considerations. Since columns have "heavies" traveling down and "lights" moving up and the division between these components may not be even, the top and bottom flows may be quite different, and the optimal column diameter must be adjusted at different locations along the length. Add to this the introduction of a feed stream at some point in the mid-column and the flows are altered again. But why be concerned about this? Columns are often constructed of expensive alloys, glass lined, or heat treated to avoid erosion, corrosion or stress problems. Minimizing the column size minimizes the cost. Along with quality of product, cost is an optimization factor.
How do you locate feed tray in distillation?
In order to locate the feed tray in distillation, you need to calculate the field tray by using MCcabe Thiele field method. For more complex systems you need to use process simulators and perform a sensitivity analysis to determine the optimum feed tray.
What is the use of the Feed Cover Plate for machine embroidery and darning?
The feed cover plate covers the feed dogs. The feed dogs advance the fabric when sewing. This is undesirable when embroidering or darning as you need to move the fabric only when necessary.
How do you add Farmville icon to news feed under left column on Facebook home page?
you dont add it to news feed, you drag it above news feed then refresh the page
What does a feed pump do in pasteurization of milk?
The feed pump promote the flow of raw milk from balance tank to plate heat exchanger.
What is the function of the feed dog?
the feed dog on a sewing machine, feeds the fabric onto the base plate of the machine, so it can be sewn
What is a distillery on a sugar plantations?
Distillation Process: The distillation process begins with raw materials like Grains/ Molasses, which are grinded in order to make it a mash. During this process, the starch is converted into sugar. The fermentation of this mash is carried out in fermentation tanks. The fermented mash is then fed to distillation columns, depending on the type of grains used in order to get different grades of alcohol. The fermentation process is suitably designed to handle different feed stocks such as molasses, cane/sorghum juice, beet, banana and all starchy feed stock.
