Bayonets

Bayonet Heaters A bayonet-tube element consists of an outer and an inner tube. These elements are inserted into tanks and process vessels for heating and cooling purposes. Often the outer tube is of expensive alloy or nonmetalhc (e.g., glass, impeivdous graphite), while the inner tube is of carbon steel. In glass construction, elements with 50.8- or 76.2-mm (2- or 3-in) glass pipe [with lengths to 2.7 m (9 ft)] are in contact with the external fluid, with an inner tube of metal. 

Indirect-Heat Rotary Steam-Tube Dryers Probably the most common type of indirec t-heat rotaiy diyer is the steam-tube diyer (Fig. 12-69). Steam-heated tubes running the full length of the cylinder are fastened symmetrically in one, two, or three concentric rows inside the cylinder and rotate with it. Tubes may be simple pipe with condensate draining by gravity into the discharge manifold or bayonet-type. Bayonet-type tubes are also employed when units are used... 

Other shapes such as horizontal bayonets have been used. In any such installations adequate provision must be made for abrasion of the exchanger surface by the bed. 

Bajonett, n. bayonet, -rohr, n., -rShre, /. bayonet tube (a combustion tube with bay- onet-like end), -verschluss, m. bayonet seal , bayonet catch. 

Bayonet heat exchangers are modified shell and tube types. The tubes are concentric with the outer tube, being sealed closed at one end, although the shell in its entirety is not always used or needed, see Figure 10-165. A helpful article describing this type of unit is by Corsi. ... 

A useful application is for tank and vessel heating, with the heater protruding into the vessel. Bayonet heat exchangers are used in place of reactor jackets when the vessel is large and the heat transfer of a large mass of fluid through the wall would be difficult or slow, because the bayonet can have considerably more surface area than the vessel wall for transfer. Table 10-43 compares bayonet, U-tube, and fixed-tubesheet exchangers. ... 

Figure 10-165. Typical bayonet type heat exchanger, showing the key sparger arrangement internally as a part of each tube. (Used by permission Corsi, R. Chemical Engineering Progress, V. 88, No. 7, 1992. American Institute of Chemical Engineers. All rights reserved.)...

Comparison of Bayonet, U-Tube, and Fixed Tubesheet Heat Exchangers... 

About one half of the tantalum used in the chemical industry is employed on sulphuric acid duties, mainly in the form of multiple-tube bayonet heaters. 

Halogens (except Chlorine, bromine. Bayonet Heaters, coils, condensers. 

Hydrobromic acid Generation Bayonet heaters, coils, condensers, synthetic HBr plants... 

Hydrochloric acid Production, purification, recovery, processing Bayonet heaters, heat exchangers, coils, condensers, HCl absorbers, synthetic HCl plants, acid coolers, gas coolers, chlorine burners, strippers, thermometer wells... 

Model S Connector Model F 4-pin Connector (Sensor cable as an option) options radial or axial output 5-pin Bayonet-connector with mating plug ... 

There may be those who can contemplate the addition to our population of vast numbers of persons having no inherited instincts of self-government and respect for law knowing no restraint upon their own passions but the club of the policeman or the bayonet of the soldier forming communities, by the tens of thousands, in which only foreign tongues are spoken, and into which can steal no influence from our free institutions and from popular discussion. But I confess to being far less optimistic. 

In addition, the law banned all semiautomatic weapons that are equipped with a detachable magazine and two or more of the following bayonet lug, flash suppressor, protruding pistol grip, folding stock, or threaded muzzle. Magazines that hold more than 10 rounds are also prohibited. Weapons and magazines manufactured before September 13, 1994, however, are exempt. 

Weapon. An instrument of combat, either offensive or defensive, used to destroy, injure, defeat or threaten an enemy, e.g. a gun, a bayonet, a bomb, or missile [Glossary of Ordn(1959), 317]... 

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