Feasibility of a Single Tall Stack in Power Plant Construction.

摘要

The use of a single stack to serve a power plant with multiple boilers is analyzed as a possible alternative to multiple tall stacks for pollution abatement. The technique is of special interest because of its particular applicability to power plants for which intermittent control systems are contemplated. The analysis indicates that a single stack serving multiple boilers is more effective than much taller multiple stacks in reducing ground level SO2concentrations. Furthermore,the single stack is considerably less costly to install and maintain compared with multiple tall stacks,and should be less objectionable to aviation interests and aesthetic sensitivities. Whether considered for new plants or retrofitting existing plants,and whether or not scrubbers are used,the single stack appears to be a practical and economically attractive alternative for pollution abatement.