부산대학교 도서관

In 1976 to 1977 TVA and the Electric Power Research Institute (EPRI) jointly funded a 1 MW pilot test (Colbert pilot plant) of the cocurrent scrubber concept. Based upon promising results from the pilot test, EPRI funded TVA to design and operate a 10 MW prototype cocurrent scrubber at the Shawnee Test Facility to further evaluate and demonstrate the cocurrent scrubber concept. The primary advantages of this scrubber concept, which were identified in the pilot tests, were smaller physical size of the scrubber and the general arrangement of the scrubber equipment which have a major impact upon capital investment and operating cost. The major objectives of this test program at Shawnee were to identify operating conditions for satisfactory removal of SO/sub 2/ and particulates from the flue gas using lime and limestone slurries, to demonstrate the reliability of scale unit. During the EPRI test program, while operating at a scrubber superficial gas velocity of 27 ft/sec, an SO/sub 2/ removal efficiency of greater than 90% was obtained with lime or limestone as an absorbent. However, total system reliability was not demonstrated at this scrubber gas velocity because of solids deposition in the mist eliminator and reheater. The highlights of this prototype cocurrent scrubber test program are presented in this report.