Miscellaneous Organic Chemical Manufacturing
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Miscellaneous Operations
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Solvent Reclamation
 Solvent
reclamation refers to the purification of contaminated or spent
solvent through distillation. VOC emissions occur from the solvent
charging and the normal distillation equipment operation.
Cleaning
 Cleaning
is an important ancillary part of the chemical manufacturing
process. Process equipment may be cleaned with solvent as often
as after each batch. VOC emissions will result from any of the
normal process operations such as charging, heating, gas sweep,
and others. Additionally, emissions will result from the wiping
of equipment with solvent wet cloths. In addition to this type
of cleaning, small items used in the chemical manufacturing process
may be cleaned by washing with solvents in a cold cleaner or
open-top vapor degreaser.
Spills
Solvents, resins, or product may be accidentally spilled during
manufacturing or cleaning activities. Materials that are spilled
onto the ground may spread over an area, vaporize, and thus result
in an air emission. Such an emission would be characterized as
fugitive.
 Transfer-Loading
Operations
Chemical products can be transported by barges, tank cars, or tank
trucks. Chemicals are transferred to these vehicles through a loading
rack, which can have multiple loading arms for connection to several
transport vehicles. Emissions can occur during loading operations
when residual vapors in transport vehicles and transfer piping
are displaced or when the chemicals being loaded vaporize and are
displaced.
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