Chemical Engineering

If you use saturated steam, the main source of the heat is provided by the condensation of the steam at a constant temperature. The energy provided by the condensing steam is significantly more than what you can get from just changing the temperature of superheated steam. When the temperature remains constant, design calculations are also a lot easier; the temperatures stay the same (or almost the same) for the steam along the entire run and the pressure stays the same (or almost the same).

heart beating?

dimensional consistency says that in any equation the dimensions of the quantities in the rhs and lhs are same.

for example

force =mass*acceleration

force dimensions are MLT-2 : mass dimension M ;acceleration dimension LT-2 togehter the right hand side is also having MLT-2 dimension same as that of force.

expension belows are used for heat exchanger to avoid thermal stress

PA66-GF33 actually is a description of a thermoplastic and not an actual part in the car.

In the field of oil/gas drilling, it refers to hydraulic horsepower per square inch.

The viscosity of a substance will change with both temperature and pressure. For liquids the changes induced by a change in temperature are usually more readily observed than the changes from pressure because liquids are only slightly compressible with pressure. In gasses, the changes in viscosity with pressure are much more easily demonstrated because gases are, almost by definition, quite compressible so that the density can be easily changed by either changes in pressure or changes in temperature.

The rectifying section in a distillation column is where the lighter distillate is being enriched and the heavier components removed. This is in contrast to the stripping section where the lighter components are being "stripped" out of the bottom product and the heavier components consequently concentrated.

It is pretty low, close to zero.

The Specific heat of Naphtha is 0.526 BTU/Lb F

The point in which the droplets of liquid (solvent) are carried up with the gas in packed column. This hapens if the solvent flow is fixed & the gas flow is icreased.

As per my knowledge Boric acid dissociates into Boron oxide by escape of water molecules from boric acid near to 300 deg centrigrade; hence bonding may be weakened. But in case of Boron oxide use, there is no dissociation of Boron oxide.

p&ids r docs used to desribe symbols,abbreivations prefixes and specialised equipments while pfds r sketches that use symbols to represent instruments/vessels used in process engrn and also shows the direction of flow.

Advantages:

Simplicity of design;

Easy to clean and maintain;

ideal for fluids that cause fouling.

Disadvantages:

Length cannot be extended beyond a limit

Rate of heat transfer is low + high cost when considering amt of heat transfer.

Heat looses occur from the outer shell.

Channeling occurs when a fluid flowing through a bed is not evenly dispersed throughout the bed. For instance large diameter reactors have more frequent channeling problems where liquid is prone to channel along the reactor walls. Channeling should be avoided and reduces efficiency and conversion since reactants do not have proper contact with catalysts or separation media.

Azota Gas Ltd. is the name of a company.

Limiting the hole area to 13-14% prevents weeping in distillation columns. This may be limited by the allowable pressure drop specified for the column (too little leads vendors to specify a higher % hole area, thus causing weeping).

Chemical engineering entails the construction, design and the operation of plants and machines that perform the chemical reactions to make useful products.

Major types of Absorption columns are

liquid-liquid absorption columns,

Gas-liquid absorption columns.

You are essentially answering your own answer within your own question. Vegetable oils and other food oils are edible oils. The other oils that cannot be eaten can be grouped into this other major category called non edible oils such as engine oils, etc.

Glass is very resistant to chemical attack making it one of the most suitable materials for use in acidic conditions.

No, for gases if the difference in pressure results in a density change of less than approximately thirty percent (30%), the fluid may be treated as incompressible by assuming the density to be the average density which remains constant.

Source: Chemical Engineering Fluid Mechanics, Ron Darby, 2nd edition, page 115.

Diethyl malonate, a colourless, fragrant liquid boiling at 199 C, is prepared by the reaction of monochloroacetatic acid with methanol, carbon monoxide or by the reaction cyanoacetic acid (the half nitriled-malonic acid) with ethyl alcohol. Diethyl malonate is an important intermediate in syntheses of vitamins B1 and B6, barbiturates, non-steroidal anti-inflammatory agents, other numerous pharmaceuticals, agrochemicals and flavors & fragrances compounds.