The report covers Phase I of a potential three-phase program to evaluate the Stone and Webster/Ionics flue gas scrubbing process at 1 MW pilot plant scale with the option to scale up and demonstrate process viability at the 75 MW prototype level. The report cites the objectives, approach, results, and conclusions, and discusses a program that included: the design, construction, and operation of, and completion of a test program for, the pilot plant; the design, construction, and testing of prototype-size electrolytic regeneration cells; the design, engineering, and estimation of construction and operating costs of the 75 MW prototype; and preparation of a test program and operating schedule for the prototype. An executive summary includes the background and objectives of the overall program and pilot-scale effort, and highlights significant results and conclusions. Although technical feasibility was demonstrated at the pilot scale, the economics of a 75 MW prototype plant at the site of the pilot plant do not appear favorable.

"EPA-650/2-75-045." "May 1975." "Contract No. 68-02-0297, ROAP No. 21ACX-082, Program element No. 1AB013." "Control Systems Laboratory, National Environmental Research Center." "EPA Project Officer: Michael A. Maxwell."