Dischare of Ammonia Vapor into the Atmosphere
Dischare of Ammonia Vapor into the Atmosphere (1988)-"Occasions arise when ammonia is released from a refrigeration plant. Some of these occasions are planned, and others are unintentional. An example of a planned release of ammonia is when maintenance and repairs are being performed on a system, and a section of the plant is isolated and to the extent possible the ammonia is pumped to another part of the active system. The ammonia that remains, however, is discharged. An example of an unintentional release of ammonia occurs following a spill resulting from an accidental rupture of a pipe, fitting, or vessel. A situation that is a combination of the intentional/unintentional categories mentioned above is the release of ammonia from a pressure-relief valve. This release is unintentional in that it occurs only because an undesirable pressure has developed, but is intentional in that the pipes and vessels subjected to this undesirably high pressure are protected. The most widely-used methods of disposing of ammonia are: Dispersion directly to atmosphere, Discharge into a vessel of water or into a water spray, Dilution with water and subsequent discharge to a storm sewer, Combustion, usually in a methane flame, and discharge of the products of combustion (primarily water and nitrogen) to atmosphere, and Transportation in liquid form elsewhere for another use, such as for agricultural purposes. Probably all of these methods have their place, and because the safe disposal of ammonia is crucial, research and development should proceed on all these methods as well as on other methods yet to be conceived. This paper concentrates on only the first method of disposal, dispersion directly to atmosphere."
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