Release of sodium and potassium in the PFB gasification of peat

Wahab Mojtahedi, Esa Kurkela, Matti Nieminen

Research output: Contribution to journalArticleScientificpeer-review

30 Citations (Scopus)

Abstract

The pressurised fluidised-bed gasification (PFBG) of peat to produce a fuel gas has been investigated as the major component of an integrated gasification combined-cycle (IGCC) power-generation system. Peat, the major indigenous solid fuel in Finland, contains alkali metals (Na and K) which are released by gasification and which have deleterious effects on the downstream hardware (eg the blades of gas turbines). Theoretical studies of the distribution and levels of alkali-metal compounds in PFB gasifier product streams are reported, followed by a comparison of the latter with measured data from a pressurised fluidised-bed gasifier of 15 cm diameter. An attempt is made to measure the volatilised alkali metals in the gasifier product gas directly after the freeboard. The measuring technique is described, and the results analysed and discussed. The development and construction of an on-line, real-time continuous alkali monitor are briefly outlined.
Original languageEnglish
Pages (from-to)95 - 100
JournalJournal of the Institute of Energy
Volume63
Issue number456
Publication statusPublished - 1990
MoE publication typeA1 Journal article-refereed

Fingerprint

peat
gasification
Peat
Gasification
Potassium
potassium
Sodium
sodium
Alkali metals
alkali metals
combined cycle power generation
beds
Alkali metal compounds
alkali metal compounds
Finland
Gas fuels
gas turbines
products
blades
gases

Keywords

  • gasification

Cite this

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title = "Release of sodium and potassium in the PFB gasification of peat",
abstract = "The pressurised fluidised-bed gasification (PFBG) of peat to produce a fuel gas has been investigated as the major component of an integrated gasification combined-cycle (IGCC) power-generation system. Peat, the major indigenous solid fuel in Finland, contains alkali metals (Na and K) which are released by gasification and which have deleterious effects on the downstream hardware (eg the blades of gas turbines). Theoretical studies of the distribution and levels of alkali-metal compounds in PFB gasifier product streams are reported, followed by a comparison of the latter with measured data from a pressurised fluidised-bed gasifier of 15 cm diameter. An attempt is made to measure the volatilised alkali metals in the gasifier product gas directly after the freeboard. The measuring technique is described, and the results analysed and discussed. The development and construction of an on-line, real-time continuous alkali monitor are briefly outlined.",
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author = "Wahab Mojtahedi and Esa Kurkela and Matti Nieminen",
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Release of sodium and potassium in the PFB gasification of peat. / Mojtahedi, Wahab; Kurkela, Esa; Nieminen, Matti.

In: Journal of the Institute of Energy, Vol. 63, No. 456, 1990, p. 95 - 100.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Release of sodium and potassium in the PFB gasification of peat

AU - Mojtahedi, Wahab

AU - Kurkela, Esa

AU - Nieminen, Matti

PY - 1990

Y1 - 1990

N2 - The pressurised fluidised-bed gasification (PFBG) of peat to produce a fuel gas has been investigated as the major component of an integrated gasification combined-cycle (IGCC) power-generation system. Peat, the major indigenous solid fuel in Finland, contains alkali metals (Na and K) which are released by gasification and which have deleterious effects on the downstream hardware (eg the blades of gas turbines). Theoretical studies of the distribution and levels of alkali-metal compounds in PFB gasifier product streams are reported, followed by a comparison of the latter with measured data from a pressurised fluidised-bed gasifier of 15 cm diameter. An attempt is made to measure the volatilised alkali metals in the gasifier product gas directly after the freeboard. The measuring technique is described, and the results analysed and discussed. The development and construction of an on-line, real-time continuous alkali monitor are briefly outlined.

AB - The pressurised fluidised-bed gasification (PFBG) of peat to produce a fuel gas has been investigated as the major component of an integrated gasification combined-cycle (IGCC) power-generation system. Peat, the major indigenous solid fuel in Finland, contains alkali metals (Na and K) which are released by gasification and which have deleterious effects on the downstream hardware (eg the blades of gas turbines). Theoretical studies of the distribution and levels of alkali-metal compounds in PFB gasifier product streams are reported, followed by a comparison of the latter with measured data from a pressurised fluidised-bed gasifier of 15 cm diameter. An attempt is made to measure the volatilised alkali metals in the gasifier product gas directly after the freeboard. The measuring technique is described, and the results analysed and discussed. The development and construction of an on-line, real-time continuous alkali monitor are briefly outlined.

KW - gasification

M3 - Article

VL - 63

SP - 95

EP - 100

JO - Journal of the Energy Institute

JF - Journal of the Energy Institute

SN - 1743-9671

IS - 456

ER -