I 1: flame area ofthe flame fiont propagating within the turbulent flow field
viic tinhtoin N2Ocfiagkhdng rh6b6qua LugrgN1Osinhra c6 m6i qran hg nhusau ,-
N
* =l.l802.I0-67:6'r'.*J- te'ZlI
Nr,lo, 'L xr J
T6c rt$ hlnh thnnh NO duqc rfnh ro{n rhes c6ng rhfc rau:
d[Nol=yr-o,[ s,, . n. I p
d! - ft+a/(, t+K,)RT
b) lllnh thAnh C0
. " - c9.14 sin phim chdy rhi6u o2, chn y6u sinh ra ru quii trinh chiy cac hydrocacbon kh6ng hoin loin. Vi rhe dd tinh ro6n CO c6 thri dpa u€n hai phan $ng sau [13]l
-
CO + OH.+ CCt, +H
(i)
(8)
I r Chu6i phin tng hlnh finnh NOx. H* s6 t6c d* k*Af aw\Ell Phin ung
Pheh fxs thoan Phin *nc nshich A
fcm'/nrol s)
B
(-) Gcal/mol E K) (cmlmot A s) (-)B ftcal/mol E K)N: * O.{ NO +N 4.$ il3 4.04't? . ?5.59 r.6 Et3 0 0 N: * O.{ NO +N 4.$ il3 4.04't? . ?5.59 r.6 Et3 0 0
Or*NFTNO+O t,48 E8 1.5 - 5.68 1.25 E7 - 37-69 OH+N.+NO+ll 4_22 C.t3 s 0 6.76E14 - 0.2,2 - '19.34 N?O+Clr+NO+NO 4.58 gl3 0 -24.1 7.39 E8 0.89 .58^93 O + N,.+ NrCl * C| 2.25 Et 0.E2' - t0?.5 3.82 El3 0 -24.1 OH+N,*N,O+H 9.t481 .148 - 7t.' 2.95 Er3 0 - t0.8
CO2+6-CO+Or
Tiic d$ phf,n frng t6o tlrinh CO (tugc tinh rheo c$ng thfc: dlcol
=(R.* n.(, - E4-)
dt '\ lcol ) (e)
trong dd ICOI" le hinr luqng c6n bing cria CO, c6c giA ri fi1 vA i?3 h cdc h* s6 ituqc tlnh theo hai phusng trlnh I0 vi I I :
Rt * k;Y'allOHI - 6,76.10"'exp(r/ I t 02)
t\ = k;[coLtor| = 2,5,10t! exp(-24055/?')
c) Hinh thinh HC
. . Pher thai Hc la nhilng hydrocacbon chua.chdy h6r. co rhii hinh rhinh rir nhidu nguycn nh6n vi cd thri xdc dinh rh6ng qua nhfrng y6u rii sau Iia]:
- Ti H klri nap lqt qua khe hd vi kh6ng ch6y duoc vi ming lrria bi dfp tir. - Higu rlng chiy sit vdch.
- Hoi nhi€n ligu cirng mnng dAu b6i trcm bim lefl mlt g*ong xylanh trong k! n6p vi
k! ndn.
HiQn tuqng ch6y kil6og hoir toin hogc bd lira khi chit kqng ch6y kdm"