Download - Coal Boiler Exhaust Emissions
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Coal boiler exhaust gas flows 7/10/98
Watson coal Normal O2
Feedrate 4.87525 K/sec 17.55 tonnes/!r
"eat val#e 20.04 $%/K 28.& $W O'* +
"eat low 97.7 $w
$ost#re 2&.9 1.114 K/sec O2 ,s! 4.1 0.1999 3 -toc! ar 0.48 /sec "2O
49.0 2.889 3 *cess 2.00 N2
" .7 0.1804 3 ,ct#al ar 7.49 /sec O2
N 0.8 0.090 3 0.99 m/sec -O2
- 0.2 0.009 3 otal as! 0.200 /sec 42.15
O 15.4 0.7508 3 6ottom as! 0.1799 tonnes/!r
l 0.0 0.0001 3 Fl as! 0.1499 /sec
0.0 0.0001 3
1.00094 'rea n%ecton at mole rato 0.7
and steam n%ecton rate o 0.5
CO2 emmission rate 89.84773 Kg/Gj 'rea #sae 0.028 /sec
,dded "2O 0.277 /sec
0.7587&44& steam on
u!erheate"
#nthal!$ of team #nthal!$ %ee"water &atent hea
'(4 C )ater 4(2 C* 42.+ bar ,ate '+.+C -a!o
j/g0 j/g0 t/hr0 1)0
&99 54.& 108.85 7.90
eat n!ut Combust. ir Comb. eat n!ut %ee" 2O 5oiler %lue
from Coal ir C! ir 6em! %rom ir eat in!ut team Gas1)0 Kg/se0 j/g K0 C0 1)0 1)0 Out 1)0 g/se0
97.7 7.491 1.005 20 0.1&9 21.14 101.4 42.4589
erent ollutant
ower n 119.00 $W Control
ower Out 119.01 $W 50 :Ox
O2
5oiler #ff. 82.19 99 1
Notes
1. :n;#t val#es are s!aded n ellow. "eat val#e (""ass? !eat low can >e ad%#sted #ntll t!e correct mass low s o>taned.
-tac as tem;erat#re s set >#t onl wt!n a narrow rane o nown ;erormance. !e eedwater low ra
2. 6ottom as! s ass#med to >e 25 o total as!. :ncomn coal s ass#med to !ave 0 ent!al;. ,s! s re
. ,ct#al NO emssons are calc#lated rom so#rce test data.
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4. -tac s ass#med to >e 1.9 m dameter.
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level (wet) .2@5 -tac
oncentraton
,- m/m
mass low $w moles vol ; (A/B5O2 tonnes/da
8.7781 44 0.1995 1.7 0.9075.2105 18 0.1784 12.2 1.908
28.87 28 1.0298 70.& 1.012
1.&2&5 2 0.0508 .5 0.91
0.0100508 &4 0.0002 0.0 0.&4& 14.7& 0.87
42.4589 /sec 1.458& 1.054 5.75
or stac tem; 14 o
s;ecc vol 1.175 m/K Note @ -O2 corrected or as! retenton o -
denst 0.851 K/m
-tacFlowrate 49.884 m/sec 1.45 m/sec at 5 O2 Oc
C 5 nleaae 52.7818
-tac veloct 18.47 m/sec
es/!r
ensible heat
r Coal 5ottom ash %l$ ash
1)0 1)0 1)0
0 0.09 0.0149
%lue Gas %lue Gas %lue Gas ,a"iation ,a"iation
C! 6em! eat Out!ut &oss &ossj/g K0 C0 1)0 %rat. 1)0
1.0542 14 1.&08 0.0 .927
tual llowe" llowe"
#missions #missions #missions
g/s g/s mg/m3 ; +
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1) exhaust gas flows
'-, averae
+ross eedrate .82 K/sec Factor
1.7& tonnes/!r 0.0511&89
+ross !eat val#e 9.9 ""<
n as! 5.0Net "eat val#e 9.422 $%/
Net "eat low & $w
$ost#re 27.4 1.04&9 1.04&9 /sec
Noncom> 2.2 0.88&4 0.9781 3 -toc! ar 12.57 K/sec
2&. 1.0049 0.95&0 3 *cess 55.00
" .5 0.17 0.1272 3 ,ct#al ar 19.48 K/sec
N 0.7 0.02&7 0.0254 3 1&.24 m/sec
- 0.2 0.007& 0.007 3 otal as! 0.978 /sec
O 18.1 0.&91& 0.&579 3 6ottom as! .80 tonnes/!r
l 0.5 0.0191 0.0182 3 Fl as! 0.09 /sec
(n;#t) (>#rned) 3 otal as! 2& o $-W
'rea n%ecton at mole rato 0.5
and steam n%ecton rate o 0.5
CO2 emission rate 92.4'749 Kg/Gj 'rea #sae 0.002 /sec
,dded "2O 0.11& /sec
0.40 steam onne
u!erheate"
#nthal!$ of team #nthal!$ %ee"water
'72 C )ater 4(2 C* 42.+ bar ,ate
j/g0 j/g0 t/hr0
728 54.& 0.08
eat n!ut Combust. ir Comb. eat n!ut %ee" 2O 5oiler %urnae
from 1) ir C! ir 6em! %rom ir nt. energ$ team #xit 6em!
1)0 Kg/se0 j/g K0 C0 1)0 1)0 Out 1)0 C0
& 19.484& 1.005 0 0.284 &.08 28.0 1054.54
erent
ower n 42.7 $W Control
ower Out 42.7 $W 40
89
5oiler #ff. &0.9& 91
95
Notes
1. :n;#t val#es are s!aded n ellow. +ross !eat val#e (""ass? t!s n#m>er can >e ad%#sted #ntll t!e correct mass low s o>tane
-tac as tem;erat#re and >oler et tem;erat#re are set >#t onl wt!n a narrow rane o nown ;eror
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tem;erat#re s t!e ;rmar taret or t!e eed water rate ad%#stment. !e #rnace et tem;erat#re s t!e ;
>ottom as! can >e set and t!s wll calc#late a ross eed rate o $-W s#c! t!at t!e taret !eat low s o>
o t!e #n>#rned #el to t!e >#rned #el. !en 1C t!e actor tmes t!e >#rned #el s t!e total #el. !e net !
to eva;orate t!e water n t!e #n>#rned #el and to !eat t!e #n>#rned #el to as! tem;erat#res. !e rato
tem;erat#re can >e set wt!n reason. -tac as s rased to 1& most#re > n%ecton o water nto com>
2. 6ottom as! s ass#med to >e 9& o total as!? .e. noncom>#st>les ;l#s #n>#rned $-W. :ncomn $. ,ct#al NO emssons are calc#lated rom t!e ,@42 actor or mass >#rn reractor wall ncnerators
4. -tac s ass#med to >e 1. m dameter.
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Normal O2 level (wet) 4@10O'* +,- ; (A/)
mass low $w moles vol at &00 at 100
O2 .50&5 44 0.0797 10.0 1.155 0.947
"2O 2.007 18 0.1278 1&.1 1.70 1.88
N2 14.989& 28 0.55 &7.4 1.094 1.027
O2 1.&040 2 0.0501 &. 1.109 1.094
-O2 0.0145 &4 0.0002 0.0 0.747 0.&25
"l 0.0187 &.5 0.0005 0.1 0.852 0.804
22.2 22.415 0.7971 0.797 1.1&7&07 1.10724
or stac tem; 170 o or >oler et tem; 190 o
s;ecc vol 1.290 m/K !#mdcaton red to 1&
denst 0.775 K/m !#m water re#red 0 /sec
-tacFlowrate 28.90& m/sec 1.&8991 Ndm/sec
C nleaae 29.774& 0.005 /sec or " control
-tac veloct 22.4 m/sec
s/!r
&atent heat ensible eat 5oiler 5oiler
=C >a!or 5ottom s %l$ sh ,a"iation ,a"iation
1)0 1)0 1)0 &oss &oss
5.&&2 0.522797 0.004715 2.00 0.4&&%urnae %urnae
%lue %lue Gas %lue Gas %lue Gas &atent ,a"iation ,a"iation
Gas C! 6em! Out!ut eat &oss &oss
g/se0 j/g K0 C0 1)0 1)0 %rat. 1)0
22.415 1.1072 192.5251 10.440 5.&&2 8.00 2.90
ollutant tual llowe" llowe"
#missions #missions #missions
g/s g/s mg/m3 ; +oler n ener terms.
. !e ;rmar ad%#stments are t!e steam low rate and t!e ecess ar.
ance s;eccaton or t!e dr sor>ent n%ecton. !e l#e as
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rmar taret o t!e ecess ar ad%#stment. !e e;ected car>on n t!e
taned rom t!s $-W. , actor s calc#lated (*4) w!c! s t!e rato
eatn val#e can >e calc#lated > s#>tractn t!e ener re#red
actor can >e #sed to mae t!s calc#laton. !e com>#ston ar
#ston c!am>er.
W s ass#med to !ave 0 ent!al;. ,s! s reerenced to 0 .