Page 65 - Steel Tech India eMagazine Volume October 2020
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81. Ŗ 01 Ŗ 1EVQDGT
DWV KU CXCKNCDNG KP $() HQT FQYPUVTGCO WVKNK\CVKQP CU
UJQYP KP (KI
Fig. 1: Variation of total injectant cost and productivity on
substitution of PCI by NG at constant coke rate Fig. 2: Utilization of total input fuel energy at
different co-injections
+V KU UGGP HQTO (KI VJCV DQVJ VQVCN KPLGEVCPV EQUV CPF
RTQFWEVKXKV[ KPETGCUGU HTQO DCUG ECUG YKVJ KPETGCUKPI (TQO (KI KV KU ENGCT VJCV 0O 0) KPLGEVKQP TGUWNVU KP
KPLGEVKQP QH 0) CPF OCZKOWO KPETGCUG QH VQVCN ), 6*/ JKIJGT CXCKNCDKNKV[ QH $() GPGTI[ VJCP DCUG
KPLGEVCPV EQUV CPF RTQFWEVKXKV[ KU D[ +04 CPF ECUG 6JG EQMG TCVG TGOCKPKPI EQPUVCPV HQT CNN ECUGU
TGURGEVKXGN[ CV 0O 6*/ 0) KPLGEVKQP 6JG VJG WRUVTGCO GPGTI[ TGSWKTGOGPV QH EQMG QXGP CPF
KPETGCUG QH VQVCN KPLGEVCPV EQUV CPF CFFKVKQPCN QZ[IGP CXCKNCDNG %1) GPGTI[ TGOCKPU WPCNVGTGF 6JGTGHQTG
EQUV OC[ DG DCNCPEGF D[ TGFWEVKQP QH FKTGEV QRGTCVKPI VJGTG KU CP KPETGCUG KP VQVCN CXCKNCDNG HWGN ICU GPGTI[
EQUV HTQO KORTQXGF RTQFWEVKXKV[ 6JG TGSWKTGOGPV QH FQYPUVTGCO JGCVKPI CPF $( $1(
7.2. Effect of co-injection on BF fuel energy and TQWVG GNGEVTKECN GPGTI[ EQPUWORVKQP TGOCKPKPI CNOQUV
CO emission: implications on overall BF-BOF UCOG CFFKVKQPCN RQYGT ECP DG IGPGTCVGF HTQO HWGN ICU
2
route VJGTGD[ TGFWEKPI RQYGT EQCN TGSWKTGOGPV HTQO DCUG
Table 9: Input fuel based energy and CO emission ECUG YJKEJ HWTVJGT JGNRU KP TGFWEKPI %1 GOKUUKQP %QUV
2
2
at different co-injections UCXKPI HTQO NQYGT RQYGT EQCN TGSWKTGOGPV CNUQ JGNRU
VQ EQORGPUCVG HQT VJG JKIJGT KPLGEVCPV EQUV VQ UQOG
PCI NG Coke Input fuel Input GZVGPV 6JG RQYGT EQCN UCXKPI HTQO DCUG ECUG 0)
Rate energy fuelbased
CO 2%+ CPF EQTTGURQPFKPI %1 GOKUUKQP TGFWEVKQP QH
2
2
emission $( $1( TQWVG KU UJQYP KP 6CDNG
3
kg/THM Nm / kg/THM GJ/THM kg/THM
THM Table 10: Reduction of CO emission of BF-BOF
2
route from base case (0 NG, 200 PCI)
PCI NG CO Steam CO 2 BF-BOF
2
125 1542.8 emission coal equivalent route
reduction saving of steam total CO 2
w.r.t BF coal emission
6JG GHHGEV QH KPETGCUKPI 0) KPLGEVKQP CPF FGETGCUKPI input fuel reduction
2%+ CV EQPUVCPV EQMG TCVG QP $( KPRWV HWGN GPGTI[ CPF kg/THM Nm / kg/TCS kg/ kg/TCS kg/TCS
3
KPRWV HWGN DCUGF %1 GOKUUKQP KU UJQYP KP 6CDNG +V KU THM TCS
2
UGGP VJCV FGETGCUG QH %1 GOKUUKQP KU FKTGEVN[ TGNCVGF
2
VQ JKIJGT 0) WUG CPF C OCZKOWO FGETGCUG QH CDQWV
VQP %1 6*/ KU CEJKGXCDNG D[ KPLGEVKPI 0O 125
2
QH 0) 6JG KPRWV HWGN DCUGF %1 GOKUUKQP KPENWFGU VJG 155.2
2
%1 KP VQR ICU %1 IGPGTCVGF KP $( UVQXGU %1 HTQO
2
2
2
DWTPKPI QH $() FQYPUVTGCO CPF CNUQ %1 HQTOGF D[ #P GOKUUKQP TGFWEVKQP QH VQP %1 6%5 HTQO DCUG
2
2
QZKFCVKQP QH ECTDQP KP $1( 6JG VQVCN KPRWV HWGN GPGTI[ ECUG OQFG QH QRGTCVKQP KU CEJKGXCDNG HQT $( $1( TQWVG
KU HQWPF VQ KPETGCUG YKVJ KPETGCUKPI 0) *QYGXGT KV DCUGF UVGGN RTQFWEVKQP D[ EQ KPLGEVKPI 0O 0) CPF
JCU DGGP HQWPF VJCV VJKU KPETGCUG KP KPRWV HWGN GPGTI[
FQGU PQV CHHGEV VJG $( URGEKſE HWGN GPGTI[ EQPUWORVKQP MI 2%+ RGT WPKV JQV OGVCN RTQFWEVKQP KP $(
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