Pumps acid eggs

Fluid-Displacement Pumps In addition to pumps that depend on the mechanical ac tion of pistons, plungers, or impellers to move the liquid, other devices for this purpose employ displacement by a secondary fluid. This group includes air lifts and acid eggs. 

An acid egg, or blowcase, consists of an egg-shaped container which can be filled with a charge of liquid that is to be pumped. This container is fitted with an inlet pipe for the charge, an outlet pipe for the discharge, and a pipe for the admission of compressed air or gas, as illustrated in Fig. 10-58. Pressure of air or gas on the surface of the liquid forces it out of the discharge pipe. Such pumps can be hand-operated or arranged for semiautomatic or automatic operation. 

Devices which are used for transporting fluids (liquids and gases) may be divided into pumps, ejectors, injectors, elevators, conveyors, air and gas pressure devices (such as acid eggs, air lifts, pulsometers etc). Pumps may be divided into piston (reciprocating), centrifugal, propeller, rotary-displacement, density, impact and momentum and turbine pumps. Pumps which... 

Displacement Pumps operate by forcing the liquid that is to be moved from one point to another by means of pressure exerted by a gas or vapor. The acid egg (Vol 1, p A88-L) is a device of this type frequently encountered in chemical industry Ref Perry (1950), 1439... 

Acide carboMque (Fr). Phenol Acid Egg or Blowcase is a type of "displacement pump"(qv) used for transferring acids and other corrosive liquids from one apparatus to another by means of compressed air. Its description is given in Refs 1 2. 

Air-displacement systems air lifts, acid eggs or blow cases, jet pumps, barometric legs... 

The pumps discussed in the preceding sections depend on the mechanical action of pistons, impellers, plungers, or other devices to move the fluid. Movement of fluids can also be accomplished by the use of air pressure, and many types of air-displacement systems have been developed for this purpose. The most common of these systems are air lifts, acid eggs, and jet pumps. 

Nonmechanical, airlift type used fa- acid eggs and jet pumps... 

Montejus An egg-shaped closed tank used to transport a liquid or slurry by using compressed air. By applying a pressure into the surface of the liquid in the tank, the liquid is forced out by displacement through a dip leg that extends into the liquid. Since the tank does not involve complex and expensive pumps other than a supply of compressed air, it is useful for transporting corrosive liquids such as very concentrated acids. It is also known as an acid egg on account of its shape and application. 

The inhibition of amino-acid transport has been regarded as the main toxic effect of mercury compounds [82], The biochemical mechanism underlying the inhibition is unclear. In unfertilized sea-urchin eggs an interaction with the amino-acid carrier was found, whereas in fertilized eggs inhibition of amino-acid transport was indirect and might result from an elevation of the Na + content of the egg caused by the inhibition of the Na+ pump [83]. The action on the diffusional process could be mediated by an effect on membrane phospholipids or on membrane proteins, or by interaction with Ca2+ which stabilizes membrane structure. Mercuric chloride in skate liver cells inhibited amino acid transport, decreased Na + /K + -ATPase (adenosinetriphosphatase) activity, impaired volume regulatory mechanisms and increased the permeability of the plasma membrane to potassium [84]. It has been suggested that... 

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