Method of vaporor gas-fractionation (separation via adsorption-desorption cycles) in a fluidized bed of adsorbent material.


Related Terms

PERMEAMETER

1. A laboratory device for measurement of permeability of materials, for example, soil or rocks; consists of a powder bed of known dimension and degree of packing through which the particles are forced; pressure drop and rate of flow are related to particle size, and pressure drop is related to surface area. 2. A device for measuring the coefficient of permeability by measuring the flow of fluid through a sample across which there is a pressure drop produced by gravity. 3. An instrument for measuring the magnetic flux or flux density produced standard output is being exceeded.

PERCOLATION FILTRATION

[CHEMENG] A continuous petroleum-refinery process in which lubricating oils and waxes are percolated through a clay bed to improve color, odor, and stability.

HYPERSORPTION

Process with recirculating bed of activated-carbon adsorbent for continuous recovery of ethylene from methane and other low-molecular-weight gases.

BUNK

A built-in bed

SLEEPING BERTH

A bed or sleeping accommodation on a boat or ship.

LAVA

Rock in the fluid state, or such material after it has solidified. Lava is formed at very high temperature and issues from the earth through volcanoes. Part of the ocean bed is composed of lava.

BED

The ground upon which a body of water rests. The term is usually used with a modifier to indicate the type of water body, as river bed or sea bed. See also BOTTOM

BATTURE

An elevation of the bed of a river under the surface of the water; sometimes used to signify the same elevation when it has risen above the surface

CHALK

Soft earthy sandstone of marine origin, composed chiefly of minute shells. It is white, gray, or buff in color. Part of the ocean bed and shores and composed of chalk, notably the 'white cliffs of Dover', England

CHANNEL

1. The part of a body of water deep enough for navigation through an area otherwise not suitable. It is usually marked by a single or double line of buoys and sometimes by ranges. 2. The deepest part of a stream, bay, or strait, through which the main current flows. 3. A name given to certain large straits, such as the English Channel. 4. A hollow bed through which water may run. 5. A band of radio frequencies within which a radio station must maintain its modulated carrier frequency to prevent interference with stations on adjacent channels. Also called FREQUENCY CHANNEL.

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