Page 61 - Steel Tech India eMagazine Volume October 2020

81. Ŗ 01 Ŗ 1EVQDGT

9JGTG ( KP KU VJG GPGTI[ QH KPRWV TGFWEVCPV HWGN 0CVKQPCN 4WRGGU +04 CU WUGF KP VJG RTGUGPV CPCN[UKU
reduct
NKMG EQMG KP $( 0) KP /+&4': GVE ( HWGN ICU KU are given in Table 2. These costs are variable and have
gen
VJG ITQUU HWGN ICU GPGTI[ IGPGTCVGF CV VJG UQWTEG NKMG been used as indicative costs only. The developed
$() GVE CPF ( ICU KP KU VJG HWGN ICU GPGTI[ WUGFHQT ƀQYUJGGV UKOWNCVQT JCU DGGP OQFKſGF HQT KPEQTRQTCVKPI
HWGN
JGCVKPI CU KP $( UVQXGU GVE VJG XCTKCDNG EQUVU +V KU VQ DG PQVGF VJCV VJG EQUV
GUVKOCVKQPU FQ PQV KPENWFG WRUVTGCO GPGTI[ EQUVU HQT
6JG VQVCN URGEKſE GPGTI[ EQPUWORVKQP 5'% QH C
inputs such as oxygen.
RTQEGUU TQWVG KU VJG UWO QH 5('% CPF GNGEVTKECN GPGTI[
TGSWKTGOGPV CU IKXGP D[ 'SWCVKQP Table 2: Unit cost for different energy sources
Energy NG Coking PCI Power Anthracite Grid
source Coal Coal Electricity
9JGTG ( KU VJG GSWKXCNGPV HWGN GPGTI[ QH GNGEVTKECN
electric 7PKV +04 +04 MI +04 +04 MI +04 MI +04 M9J
GPGTI[ TGSWKTGOGPV +H CP KPVGTOGFKCVG RTQFWEV NKMG cost 0O MI
RGNNGV KU KORQTVGF VJGP EQTTGURQPFKPI WRUVTGCO GPGTI[ 30.0 13.0 15.0 10.0 13.0 3.0
needs to be added to SEC to get the total energy 6JG ECNEWNCVKQP OGVJQFQNQIKGU FGUETKDGF CDQXG CTG
EQPUWORVKQP CRRNKGF VQ C OKZGF TQWVG RNCPV EQORTKUKPI QH /+&4':
'#( TQWVG $( $1( TQWVG CNQPI YKVJ OKZKPI QH 0) KP
4.2. Emission calculation
ICU PGVYQTM QT CPF HQT GNGEVTKEKV[ IGPGTCVKQP CPF HQT VJG
6JG VQVCN %1 GOKUUKQP CUETKDCDNG VQ VJG RNCPV KU IKXGP ECUG QH VW[GTG KPLGEVKQP QH 0) KP $( VQ GUVKOCVG GPGTI[
2
D[ 'SWCVKQP EQPUWORVKQP %1 GOKUUKQP CPF HQUUKN HWGN EQUV
2
5. USE OF NATURAL GAS IN MIDREX-EAF
ROUTE IN A MIXED ROUTE INTEGRATED
STEEL PLANT

6JG /+&4': RTQEGUU KU VJG OQUV YKFGN[ WUGF ICU
Where C KP KU VJG GOKUUKQP HTQO KPRWV TGFWEVCPV
reduct based sponge iron production process in which iron
HWGN % KU VJG GOKUUKQP HQT DWTPKPI CFFKVKQPCN HWGN
add QTG KP VJG HQTO QH ECNKDTCVGF NWOR[ QTG CPF RGNNGVU KU
HQT GNGEVTKEKV[ IGPGTCVKQP QT GOKUUKQP CVVTKDWVCDNG VQ TGFWEGF YKVJ VJG JGNR QH TGHQTOGF PCVWTCN ICU +V KU
= ?
GNGEVTKEKV[ FTCYP HTQO ITKF YJKEJGXGT CRRNKGU VQ C VJG NCTIGUV EQPUWOGT QH 0) KP VJG KTQP CPF UVGGN UGEVQT
RCTVKEWNCT RNCPV RTCEVKEG % KU VJG GSWKXCNGPV %1 QH 6JG /+&4': UJCHV TGSWKTGU MOQN ` 0O

cr 2
[5]
ECTDQP ETGFKV HQT RTQFWEV HWGN ICU GZRQTVGF HTQO VJG PGV KPRWV QH 0) VQ RTQFWEG VQP &4+ . The produced
plant; C KU VJG WRUVTGCO GOKUUKQP QH KORQTVGF &4+ ITCFG KU EQPUKFGTGF VQ DG JCXKPI OGVCNNKE
WRUVTGCO
OCVGTKCN CPF % KU VJG %1 RTQFWEGF HTQO DWTPKPI (G CPF ECTDQP $CUGF QP VJG KPRWV QH VJKU &4+
KORQTV 2
KORQTVGF HWGN ICU YKVJKP VJG RNCPV DQWPFCT[ CU HQT VJG VJG VQVCN GNGEVTKECN GPGTI[ TGSWKTGOGPV RGT VQP QH UVGGN
ECUGU QH JGCVKPI D[ WUKPI 0) FKTGEVN[ QT D[ OKZKPI KP YJKEJ KPENWFGU RTGFKEVGF '#( GNGEVTKEKV[ HQT &4+
[11]
charge GNGEVTKEKV[ HQT UGEQPFCT[ UVGGN OCMKPI CPF
C RNCPV ICU PGVYQTM 6JG ITKF %1 GOKUUKQP HCEVQT JCU
2 OKNNU UVCPFCTF KPFWUVT[ TGSWKTGOGPVU KU EQORWVGF
DGGP VCMGP CU MI %1 M9J
2 D[ OQFGN #U VJG GPVKTG QHH ICU HTQO VJG UJCHV HWTPCEG
4.3. Total fossil fuel cost calculation KU WUGF WR HQT JGCVKPI KP VJG TGHQTOGT VJG TGUV DGKPI
TGE[ENGF CPF OKZGF YKVJ HTGUJ 0) KPNGV VQ VJG TGHQTOGT
6JG VQVCN HQUUKN HWGN EQUV KU IKXGP D[ 'SWCVKQP VJGTG KU PQ CXCKNCDNG HWGN ICU HQT FQYPUVTGCO &5
CRRNKECVKQPU +V KU EQPUKFGTGF VJCV JGCVKPI KP OKNNU CTG
ECTTKGF QWV WUKPI CFFKVKQPCN 0) CPF VJG JKIJ GNGEVTKECN

GPGTI[ TGSWKTGOGPV QH /+&4': '#( DCUGF +52 KU
FTCYP HTQO RQYGT ITKF 2GNNGVU CTG CUUWOGF VQ DG
Where C KP KU VJG EQUV QH KPRWV TGFWEVCPV HWGN %
treduct VKORQTV DQWIJV HTQO GZVGTPCN UQWTEG 6JG VQVCN HQUUKN HWGN EQUV
KU VJG EQUV QH KORQTVGF HWGN ICU NKMG 0) CPF %V is the
electric VQVCN GPGTI[ EQPUWORVKQP CPF CUUQEKCVGF %1 GOKUUKQP
2
EQUV QH CFFKVKQPCN HWGN TGSWKTGF HQT GNGEVTKEKV[ IGPGTCVKQP CTG RTGUGPVGF KP 6CDNG 6JG WRUVTGCO GPGTI[ CPF
QT EQUV QH GNGEVTKEKV[ FTCYP HTQO ITKF YJKEJGXGT KU CVVTKDWVCDNG GOKUUKQP QH RGNNGV RTQFWEVKQP HQT /+&4':
CRRNKECDNG VQ C RCTVKEWNCT RNCPV RTCEVKEG '#( TQWVG CTG VCMGP CU ), 6%5 CPF MI
%1 /TCS respectively .
[5]
6JG WPKV EQUV QH FKHHGTGPV GPGTI[ UQWTEGU KP +PFKCP 2
STEEL TECH