Chemistry

control room

A control room or operations room is a central space where a large physical facility or physically dispersed service can be ...

compound

1) In chemistry, a compound is a substance that results from a combination of two or more different chemical element s, in ...

UNIFAC

Definition. UNIFAC. Universal quasichemical Functional group Activity Coefficients.

desulphurization

Desulfurization refers to the industrial process of removing sulfur from a mineral resource mixture such as crude oil. It ...

fuel rod

The FuelRod is the first reusable, patented, portable charging system that allows you to fuel (charge) your mobile device on ...

unscheduled maintenance

Unscheduled maintenance is maintenance that is planned, but is not scheduled for specific time and has not been assigned to a ...

maintenance

The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, ...

shape factor

The shape factor is the perimeter of the contour around the area of interest divided by the square root of the area. It is a ...

process variable

A physical or chemical quantity that is usually measured and controlled in the operation of a water, wastewater, or industrial ...

calculus

calculus, branch of mathematics concerned with the calculation of instantaneous rates of change (differential calculus) and ...

adiabatic saturation temperature

Adiabatic saturation temperature is defined as that temperature at which water, by evaporating into air, can bring the air to ...

lab-scale

An analytical balance (or lab balance) is a class of balance designed to measure small mass in the sub-milligram range.

converter

A unit conversion expresses the same property as a different unit of measurement. For instance, time can be expressed in ...

Huntsman process

Huntsman’s process was the first to produce a fully homogeneous steel. Unlike previous methods of steel production, the ...

number of transfer units

The number of transfer units (NTU = UA/(mcp)) itself is a combination of overall heat transfer coefficients, transfer area, ...

purex process

The Purex Process is another continuous solvent extraction process which has been developed and demonstrated through ...

Windscale nuclear accident

Material housed here will remain radioactive for 100,000 years. This is Sellafield’s great quandary. In some cases, the ...

wavelength

Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated ...

knockout drum

A Knock-out (KO) drum consists of a vertical vessel specially designed to separate vapor and liquid from a two-phase process ...

contact angle

Contact angle, ? (theta), is a quantitative measure of wetting of a solid by a liquid. The contact angle is geometrically ...

condensation

Condensation is the process of water vapor turning back into liquid water, with the best example being those big, fluffy ...

isomerism

Isomerism is the phenomenon in which more than one compounds have the same chemical formula but different chemical structures. ...

Mohs scale of hardness

The Mohs Hardness Scale is used as a convenient way to help identify minerals. A mineral’s hardness is a measure of its ...

acid number

The acid number is defined as the amount of potassium hydroxide in milligrams required to neutralize 1 g of resin under fixed ...

two-property rule

The two property rule holds that the state of a pure substance of a given mass can be fixed by specifying. any two properties. ...

Bond number

In fluid dynamics the Etvs number (Eo), also called the Bond number (Bo), is a dimensionless number measuring the importance ...

IBC

The formation of an IBC is a simple process that involves the following steps: Select the right jurisdiction according to ...

gas oil

Definition of gas oil : a hydrocarbon oil used as a fuel oil especially : a petroleum distillate intermediate in ...

dilution

Dilution is the process of decreasing the concentration of a solute in a solution, usually simply by mixing with more solvent ...

quench column

A Quench Tower or Condenser is often the first step in conditioning a high temperature, polluted air stream so that ...