An update on operation experience and scale-up with CYMIC{reg_sign}
- Kvaerner Pulping Oy, Tampere (Finland)
- Kvaerner Pulping Inc., Charlotte, NC (United States)
This paper describes the operational experiences with the first full-scale CYMIC{reg_sign} demonstration plant, the scale-up principles of CYMIC{reg_sign}, and finally a large-scale CYMIC{reg_sign} case. Kvaerner Pulping`s new-generation circulating fluidized bed (CFB) boiler, CYMIC{reg_sign} offers a multi-fuel combustion solution with low emissions, high efficiency and high availability. With the cyclone built inside the boiler furnace, its space requirements are extremely small. Due to the watercooled construction, the refractories are thin, minimizing the need for maintenance. The pilot testing with CYMIC{reg_sign} was successfully completed and with positive results in 1992. The next step was a CYMIC{reg_sign} scale-up and a full-scale demonstration project. The 32 MW{sub th} demonstration plant owned by VAPO Oy in the town of Lieksa, eastern Finland, is now in continuous operation. The CYMIC{reg_sign} has been further scaled by developing six standard cyclone sizes. The CYMIC{reg_sign}`s square furnace size can be varied and can be multiplied, offering a stepless capacity range from small Lieksa size units to utility boilers. The design of the CYMIC{reg_sign} process, including operation of the cyclone and the gas lock, has been verified. In addition, tests have been run measuring flue gas emissions and combustion efficiency. The most interesting results from these tests are discussed. A 185 MW{sub th} CYMIC{reg_sign} unit is now operating at the Rauma paper mill of Unite Paper Mills, Finland. The project began in November 1994 and the boiler started up in the summer of 1996. The design and the performance of this CYMIC{reg_sign} unit are presented.
- OSTI ID:
- 459091
- Report Number(s):
- CONF-961197-; TRN: 97:001267-0011
- Resource Relation:
- Conference: 12. fluidized bed conference, Pittsburgh, PA (United States), 11-13 Nov 1996; Other Information: PBD: 1996; Related Information: Is Part Of Twelfth annual fluidized bed conference; PB: 344 p.
- Country of Publication:
- United States
- Language:
- English
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