Damjan Hann, Jože Žarn, Miloš Markič
Properties of CO2 adsorption for petrographically diverse ortho-lignites and some higher rank coals
Číslo: 3/2020
Periodikum: Acta Montanistica Slovaca
DOI: 10.46544/AMS.v25i3.6
Klíčová slova: carbon dioxide, lignite lithotype, Velenje lignite, Slovenia
Pro získání musíte mít účet v Citace PRO.
Anotace:
A great deal of research has been done worldwide on the assessment
of realistic CO2 adsorption capacities of different coals, which is
important for the understanding and predicting of processes associated
with the geological storage of carbon dioxide (CO2). The focus of this
article is on measuring the CO2 amounts adsorbed by coals regarding
their petrographic type and coalification rank. Most of the samples
were taken from the Velenje lignite seam (ortho-lignite, Slovenia).
Samples of meta-lignites and bituminous coals from Hrastnik (metalignite, Slovenia), Raša (bituminous coal, Croatia) and the Sokolov
Basin (meta-lignite, Czech Republic) have been analysed as
comparing coals. Adsorption measurements were undertaken using the
gravimetric method at the temperature of 21 °C and the CO2 pressure
of 3 MPa. The measurements show that different ortho-lignite
lithotypes (dried, ground, and under 200 µm sieved material,
compressed under uniaxial compression of 9 MPa and filled with
CO2) adsorbed on average 29 m3
of CO2 per tonne of lignite, varying
from 22 to 39 m3
of CO2 per tonne of lignite. However, higher rank
coals adsorbed slightly more CO2, that is, between 31 and 42 m3
of CO2 per tonne of coal.
Zobrazit více »
of realistic CO2 adsorption capacities of different coals, which is
important for the understanding and predicting of processes associated
with the geological storage of carbon dioxide (CO2). The focus of this
article is on measuring the CO2 amounts adsorbed by coals regarding
their petrographic type and coalification rank. Most of the samples
were taken from the Velenje lignite seam (ortho-lignite, Slovenia).
Samples of meta-lignites and bituminous coals from Hrastnik (metalignite, Slovenia), Raša (bituminous coal, Croatia) and the Sokolov
Basin (meta-lignite, Czech Republic) have been analysed as
comparing coals. Adsorption measurements were undertaken using the
gravimetric method at the temperature of 21 °C and the CO2 pressure
of 3 MPa. The measurements show that different ortho-lignite
lithotypes (dried, ground, and under 200 µm sieved material,
compressed under uniaxial compression of 9 MPa and filled with
CO2) adsorbed on average 29 m3
of CO2 per tonne of lignite, varying
from 22 to 39 m3
of CO2 per tonne of lignite. However, higher rank
coals adsorbed slightly more CO2, that is, between 31 and 42 m3
of CO2 per tonne of coal.