Experience with different cyclones in CFBs
Kvaerner Pulping has been designing, manufacturing and delivering different kinds of CFB boilers since the beginning of the 1980s. This paper gives a historical overview of these first generation CFBs and especially operational experience with them. Due to some specific problems in these first generation CFBs, described in this paper, Kvaerner Pulping was among the pioneers in CFB construction development and was probably the first company to deliver a totally water-cooled CFB construction that also included the cyclone. The goal in construction development has been to improve the reliability of the CFB boiler and at the same time minimizing the required service time. Kvaerner's continuous CFB development has created several constructions with different appearances for different applications. The basic development work has been done on the conventional cyclone type and this it is still the most common cyclone type used in all sizes of applications. CYMIC boiler, and especially its cyclone, is one of the new designs. It is also a totally water-cooled construction and it has some additional benefits which are mainly correlated with the space requirements of boiler placement and simple cyclone construction. CYMIC is very suitable for industrial applications and for cases where utilizes existing boiler houses or parts of them are being utilized. For the increased CFB boiler sizes Kvaerner has developed the ICCL (Integral Cylindrical Cyclone and Loop-seal). Again the installation is totally water-cooled and additional benefits are related to the straight cyclone construction, water-cooled vortex finder the ability to locate a significant proportion of heat surfaces in the loopseal. All the constructional features mentioned above are described in detail in this paper. This present paper gives some idea of how these installations have coped in practice and what aspects need to be developed further.
- Research Organization:
- Kvaerner Pulping Inc. (US)
- OSTI ID:
- 20018822
- Report Number(s):
- CONF-9806214-; TRN: IM200018%%56
- Resource Relation:
- Conference: Power-Gen Europe'98, Milan (IT), 06/09/1998--06/11/1998; Other Information: 1 CD-ROM. Operating Systems: Windows 3.1, '95, '98 and NT; Macintosh; and UNIX; PBD: [1998]; Related Information: In: Power-gen Europe'98, [2400] pages.
- Country of Publication:
- United States
- Language:
- English
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