Analysis of Air Pollution Control Technologies for Shipyard Emitted Volatile Organic Compounds (VOCS).

摘要

Amendments to the Clean Air Act (CAA) have prompted the need to reduce Volatile Organic Compound (VOC) emissions from industrial operations. One approach to VOC reduction is through air pollution control technology to remove the contaminants from the exhaust airstream of VOC generating processes. Although a variety of processes in the Ship Building and Repair Industry generate VOCs, coating operations have the greatest potential for achieving large reductions in emissions. Due to the distinctive nature of the operations, practical installation and use of air pollution control equipment within shipyards is not simple. Shipyard operations are intermittent in time, conducted at a variety of constantly changing locations within the facility, and use a wide array of coatings with many different formulations. Coating operations can be divided into several groups, each of which presents a unique situation. The element common to most of these operations is a low concentration of VOCs in a large volume of air. There are three fundamental categories of VOC control technology. These are: incineration/oxidation; sorption processes; and condensation. In some applications these technologies are combined into hybrid systems.