TY - BOOK
T1 - New alternatives for electricity production. Part 4. Performance of peat-fuelled air gasification combined-cycle power plants
AU - Solantausta, Yrjö
AU - Mäkinen, Tuula
AU - Kurkela, Esa
AU - Sipilä, Kai
PY - 1993
Y1 - 1993
N2 - The objectives of the study were preparation of the
process design and
flowsheets and mass
and energy balances for two peat-fuelled gasifica?tion
combined cycles: one
using the present
technology and the other the potential technology; and a
continued development
of a
consistent set of techno-economic evaluations of new
biomass fuelled
combined-cycle power
plants under development.
A process analysis computer program, ASPEN PLUSTM, was
used as the basic
framework
for performing the energy and material balances. Although
the programme was not
developed
especially for power plant design, it is quite suitable
for this application
due the features of
inte?grated gasification-combined cycles.
Both cogeneration power plant concepts were designed
around an existing gas
turbine. The
major differences between the two concepts were the gas
turbine combustion
temperature (1
120/1 300 ?C), and the method of gas cleaning (cold/hot).
The power production
efficiency
of the present case was 41 % and that of the potential
case 45 %. The
power-to-heat ratio
increased from 0.91 to 1.03, when potential technology
was applied.
The potential case is quite promising for cogeneration,
since, in addition to
the high
efficiency, its capital costs should be lower than those
of the present case.
Gasification-combined cycles should be of extreme
interest for utilities, since
their high
power-to-heat ratio of about 1.0 is favour?able compared
with 0.5, typical of
conventional
solids-fuelled cogene?ration power plants.
AB - The objectives of the study were preparation of the
process design and
flowsheets and mass
and energy balances for two peat-fuelled gasifica?tion
combined cycles: one
using the present
technology and the other the potential technology; and a
continued development
of a
consistent set of techno-economic evaluations of new
biomass fuelled
combined-cycle power
plants under development.
A process analysis computer program, ASPEN PLUSTM, was
used as the basic
framework
for performing the energy and material balances. Although
the programme was not
developed
especially for power plant design, it is quite suitable
for this application
due the features of
inte?grated gasification-combined cycles.
Both cogeneration power plant concepts were designed
around an existing gas
turbine. The
major differences between the two concepts were the gas
turbine combustion
temperature (1
120/1 300 ?C), and the method of gas cleaning (cold/hot).
The power production
efficiency
of the present case was 41 % and that of the potential
case 45 %. The
power-to-heat ratio
increased from 0.91 to 1.03, when potential technology
was applied.
The potential case is quite promising for cogeneration,
since, in addition to
the high
efficiency, its capital costs should be lower than those
of the present case.
Gasification-combined cycles should be of extreme
interest for utilities, since
their high
power-to-heat ratio of about 1.0 is favour?able compared
with 0.5, typical of
conventional
solids-fuelled cogene?ration power plants.
KW - electricity power
KW - power generation
KW - gasification
KW - combined-cycle power plants
KW - peat
KW - air
M3 - Report
SN - 951-38-4344-0
T3 - VTT Tiedotteita - Meddelanden - Research Notes
BT - New alternatives for electricity production. Part 4. Performance of peat-fuelled air gasification combined-cycle power plants
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -