presentatoin on mild combustion

8/18/2019 presentatoin on MILD combustion

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MILD

COMBUSTION


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1. Introduction

2. Why Diferent?

3. Ho to !chie"e #$%&e$e'' Co&(u'tion?

). Hi'tory

*. +e"ie o, $ iter%ture'1. +e'e%rche' out'ide Indi%

2. +e'e%rche' In'ide Indi%

3. Li-uid #ue$'

). %'eou' #ue$'

*. #urn%ce !// $ic%tion'

0. %' Tur(ine ! //$ic%tion'

0. Nu&eric%$ %n%$y'i'1. +e"er'e #$o

2. #or%rd #$o

. Conc$u'ion

. ro4ect O(4ecti"e'

5. +e,erence'

)6610 De/%rt&ent o, Mech%nic%$ 7n8ineerin89 o"tCo$$e8e9 Thri''ur

2

CONT7NTS


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Ne &ethod co&(ined ith $o e&i''ion9 hi8hco&(u'tion inten'ity9 %nd 8ood 't%(i$ity o, : %&e.

B%'ed on conce/t o, recircu$%tion o, (urnt 8%' %nddi$ution %nd /rehe%tin8 o, ,re'h 8%'e';2


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#$%&e$e'' U= or =i'u%$ :%&e

&onitorin8 not /o''i($e

Con"ention%$ : %&e

Stee/ te&/er%ture 8r%dient %nd

che&ic%$ co&/o'ition' hich i'

,%"oured ,or :%&e 't%(i$ity Loc%$ 8%' te&/er%ture in :%&e &%y

re%ch u/to !#T

#$%&e ,ront concentr%ted in % thin

"o$u&e ith hi8h$y 'tretched %nd

con"o$uted %re%

#$%&e$e'' co&(u'tion

+e%ct%nt te&/er%ture E *F C

+e%ction' t%Ge /$%ce %t te&/er%ture'

%(o"e Se$, I8nition te&/er%ture ;3<

T%Ge /$%ce di'tri(uted in $%r8er "o$u&e

S&oother te&/er%ture /ro$e


)

WH DI##7+7NT???


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*

Image courtesy IFR


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In Con"ention%$ Co&(u'tion9 the ,ue$ %nd %ir 4et' %re/$%ced in'ide % /ri&%ry ch%&(er to %chie"e e%r$y &i>in8(e,ore rin8

In #$%&e$e'' co&(u'tion9 insertisation occur'9 i.e9 %ir

&i>e' ith :ue 8%' (e,ore it &i>e' ith ,ue$!ir i' /rehe%ted to the &i>ture 'e$, i8nition te&/er%ture9

o, the r%n8e 1123 J

!ir i' in4ected %t "ery hi8h "e$ocity %nd hence the (urner

%' i' 'u//$ied concentric to the %ir duct 'o th%t it

'urround' the in'erti'%tion &i>tureSir$ or (%K e' %re u'ed ,or &i>in8

#$ue 8%' i' recircu$%ted into the re%ction one9 %nd 'e$,i8nition te&/er%ture i' &%int%ined.


0

HOW TO !CHI7=7 #L!M7L7SSCOMBUSTION;3


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Image courtesy IFRF

MILD Combustion ina furnace


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#%ctor' th%t $ed to +D inc$ude roin8 'tre'' o, reducin8 NO> /o$$ution

7ner8y cri'i' o, F' %nd F'

o"ern&ent nor&' %nd re8u$%tion'

1559 %t 123 J ,urn%ce te&/er%ture %nd 523 J %ir/rehe%t te&/er%ture9 :%&e %' not e"ident9 no U='i8n%$9 (ut co&/$ete co&(u'tion %nd CO %nd NOe&i''ion ere c$o'e to ero c%$$ed it #LO@

7>/$oited u'in8 C#D code9 'tee$ indu'try9 Cer%&ic

indu'try9 $%'' indu'try9 Che&ic%$ Indu'try9 /oer8ener%tion indu'try


HISTO+


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Incre%'e o, ,ue$ o>idier inter,%ce te&/er%ture $e%d'to reduced 'ur,%ce ten'ion oin8 to (etter &i>in8%nd %to&i%tion Sur,%ce ,ree ener8y i' &ini&iedA

!''i't' dro/$et e"%/or%tion in $i-uid ,ue$ in4ection

Hi8h re'idence ti&e9 $e%din8 to (etter che&ic%$Ginetic' %nd re%ction ti&e

!('ence o, 'he%r $%yer :%&e$etA here re%ctionoccur'9 nonuni,or& &i>ture concentr%tion doe' not%fect co&(u'tion

Hi8h r%di%ti"e he%t tr%n',er9 i&/ro"e' dro/$et"%/ori%tion (y he%tin8


5

HSIC!L !S7CTS


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1. Hi8h $e"e$ o, dry %$$ conne&ent

2. No need o, (%cG &i>in8

3. Di'/ro/ortioni%tion o, ,ue$ %nd o>idier


1F

#LUID DN!MICS !S7CTS


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)6610 11De/%rt&ent o, Mech%nic%$ 7n8ineerin89 o"tCo$$e8e9 Thri''ur

+7=I7W O#LIT7+!TU+7S


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In 2FF29 M M%ncini et. %$. tr ied to

/redict NO e&i''ion o, % (urner

o/er%ted in :%&e$e'' o>id%tion

&ode;1)<

N%tur%$ 8%' (urned ith %ir

/rehe%ted to 13FF de8ree centi8r%de

Ste%dy 't%te nu&eric%$ %n%$y'i' %'

conducted %nd co&/%red ith

e>/eri&ent%$ (urner

Ther&%$ NO %' ,ound to (e &ore %'

co&/%red to /ro&/t NO

Mo't o, the NO %' o('er"ed to (e

,ound in thin re8ion o, 'tr%in

,or&%tion9 or :%&e$et

rediction in'ide :%&e$et re8ion i'

h%"in8 hi8h de8ree o, error


12

+7=I7W


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In 2FF9 Nu&eric%$ %nd

7>/eri&ent%$ In"e'ti8%tion o, %

MILD co&(u'tion (urner %'

conducted (y Chi%r% %$$etti et.

%$. ;13<

7>/eri&ent%$ in"e'ti8%tion o, %(urner %' conducted %nd co&/%red

ith C#D 3D %nd %>i'y&&etric &ode$.

NO e&i''ion %' ,ound to (e reduced

,ro& 1FFF //& to 3F //& %'

co&/%red in MILD co&(u'tion

%8%in't con"ention%$ co&(u'tion.

!>y 'y&&etric &ode$ o"er e'ti&%te'the recircu$%tion de8ree.

D%&Goh$er nu&(er %t hi8h

te&/er%ture re8ion %' ,ound $oer

th%n th%t in $o te&/er%ture re8ion.


13

+7=I7W


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1)

+7=I7W


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In 2F119 =$%di&ir i&ont et. %$. de"e$o/ed % 4oint+!NS6L7S &ode$$in8 ,or :%&e$e'' co&(u'tion ;12< +!NS &ode$ 'i&u$%te %ccur%te$y co&/%ct :%&e %nd

di'tri(uted :%&e$e'' co&(u'tion

L7S &ode$ ith 'u( 8ird "i'co'ity 'c%$e re/roducein't%nt%neou' 'tructure' $iGe "orte>

Point &ode$ %' o('er"ed to h%"e $oer co&/ut%tion%$ ti&e


1*

+7=I7W


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In 2F129 %>in Su et.%$. tried to 'i&u$%te HIT!C ith&odied 7ddy Bre%G U/ &ode$ 7DUA ;11/eri&ent conducted (y M%ncini et. %$. ;1)< ! ,urn%ce &ode$ ith three 'te/ re%ction &ech%ni'& %'

&ode$$ed ! /%r%&eter &odied 7DU ith +SM %' u'ed to /redict

:%&e %nd it %' o('er"ed th%t the :%&e %nd e&i''ionch%r%cteri'tic' c%n (e correct$y /redicted9 (ut /reci'ion %'not '%ti',%ctory.


10

+7=I7W


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In 2F1*. S Gru'e et. !$.conducted %n e>/eri&ent%$%nd nu&eric%$ 'tudy o,MILD co&(u'tion ,or 8%'tur(ine %//$ic%tion' ;2< re''ure in:uence i'

&onitored %nd e&i''ion' i'e>%&ined.

! re"er'e :o ty/eco&(u'tion ch%&(er %'u'ed to enh%nce the &i>in8

o, :ue 8%'. Si8nic%ntdecre%'e in NO> %'detected ith decre%'in8/re''ure %nd e-ui"%$encer%tio


1

+7=I7W


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In 2F1*9 Pin84in8 e et. !$ conducted

%n e>/eri&ent%$ 'tudy on MILD

co&(u'tion o, /re"%/ori'ed $i-uid

,ue$' ;1*<

+e"er'e #$o under e$e"%ted /re''ure. Co&(u'tion 't%(i$ity de/end on the ,ue$

ty/e9 ith nhe/t%ne (ein8 &o't un't%($e

due to ,%'t i8nition.

NO> e&i''ion incre%'e' under e$e"%ted

/re''ure S$o &i>in89 e$e"%ted /re''ure9 re'idence

ti&e %nd incre%'ed te&/er%ture $e%d' to

incre%'ed NO> e&i''ion


1

+7=I7W


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ro, Sud%r'h%n Ju&%r %nd = M%hendr% +eddy o, IITBo&(%y ;0


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In"e'ti8%tion o, ,or%rd%nd re"er'e: o con,8

)6610 22De/%rt&ent o, Mech%nic%$ 7n8ineerin89 o"tCo$$e8e9 Thri''ur

NUM7+IC!LSIMUL!TION +7SULTS


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)6610 De/%rt&ent o, Mech%nic%$ 7n8ineerin89 o"tCo$$e8e9 Thri''ur 23

+7=7+S7 #LOW CON#IU+!TION


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)6610 De/%rt&ent o, Mech%nic%$ 7n8ineerin89 o"tCo$$e8e9 Thri''ur 2)

+7=7+S7 #LOW CON#IU+!TION


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)6610 De/%rt&ent o, Mech%nic%$ 7n8ineerin89 o"tCo$$e8e9 Thri''ur 2*

#O+W!+D #LOW CON#IU+!TION


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F

*FF

1FFF

1*FF

2FFF

2*FF

&%> te&/o$yno&i%$ &%>

te&/A

te&/ out$et

o$yno&i%$ te&/

out$etA

I n l e t T e m p e r a t u r e ( K )

T e m p e r a t u r e ( K )

F

*FF

1FFF

F.FF7RFF

*.FF7F0

1.FF7F*

1.*F7F*

2.FF7F*

2.*F7F*

NO e&i''ion

o$yno&i%$ NO

e&i''ionA


M o l e F r a c t i o n o f N O


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)6610 De/%rt&ent o, Mech%nic%$ 7n8ineerin89 o"tCo$$e8e9 Thri''ur 3F


2FF 3FF )FF *FF 0FF FF FF

F.FF7RFF

*.FF7F0

1.FF7F*

1.*F7F*

2.FF7F*

2.*F7F*

NO emission

NO e&i''ion

o$yno&i%$ NO e&i''ionA


M o l e F r a c t i o n o f N O


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No1

te&/er%ture in$et JA

2 te&/er%ture

out$et JA

12 &%>i&u&te

&/er%tureJA

3 "e$ocityout$et & '1A

) no&o$e,r%c

tinoout$et

* r%teo,ther&%

$noout$et&o$ &3

'1A

0 r%teo,/ro&/t

noout$et&o$ &3

'1A

&o$e,r%ction coout$et

1 31.* 1))5.*010 1020.51)3 *.1F35 *.117F0 1.F711 ).0573) *.)F7F

2 3*2.* 1)1.252 1*3.22 0.113)3 1.1*7F0 1.*37F5 1.0)732 2.507F0

3 3.* 1**1.35*3 11.5** 0.3)5*2 3.7F 2.3711 ).173) 1.17F0

) )22.* 1002.5 1*.))0) 0.153**) ).327F 2.52711 F 1.2*7F0

* )*.* 1255.050 2231.)015 0.50335 *.27F 2.)7F F 1.*F7F*

0 )52.* 1)F*.*)1 15FF.)103 0.3301 1.537F* 1.1F7F F 5.F37F0

*2.* 1*2.F2** 153.5*3 0.*112 ).07F0 3.227F5 F 0.0)7F0

*02.* 1255.050 2231.)015 0.50335 *.27F 2.)7F F 1.*F7F*

5 *5.* 10*.FF2 153.)05 0.3535F5 2.7F0 .711 F 1.2*7F0

1F 032.* 1*1.F)1 155*.*110 .F11*)F5 ).207F0 2.F07F F ).F57F*


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No1

te&/er%ture in$et JA

2 te&/er%ture

out$et JA

12 &%>i&u&te

&/er%tureJA

3 "e$ocityout$et & '1A

) no&o$e,r%c

tinoout$et

* r%teo,ther&%

$noout$et&o$ &3

'1A

0 r%teo,/ro&/t

noout$et&o$ &3

'1A

&o$e,r%ction coout$et

11 00.* 1)*.*02 2F0.FFF2 .*31005 .07F0 .F17F F 0.37F*

12 F2.* 1023.**)2 2F*F.131 .1030503 1.327F* 3.37F F *.17F*

1) 2.* 151).)*5 15)2.2012 0.222)32 F.FFF1301 1.3)711 F 2.*27F

1* F.* 1005.**1) 215F.21 .251 F.FFF12F20 1.F07F* F F.FFF25F)

10 )2.* 1*0.015 222.05*0 .*22)3* F.FFF1)031 1.17F* F F.FFF30232

1 .* 211.)1)0 2155.52 .)55*32 F.FFF22F23 1.F17F F 0.37F0

1 512.* 221F.2F 21.5* .21F51 F.FFF*0*0 0.57F F ).)7F*

15 5).* 1)5.2F0 221.350 .*)2521 F.FF1F*)2 .37F* F F.FFF05)

2F 52.* 1)).)* 22.*) .0*532 F.FF11*0 F.FFF221*2 F F.FF1)2*5


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1. #LO@ c%n (e %ccur%te$y &ode$$ed u'in8 C#D

2. #LO@ reduce' e&i''ion' %nd incre%'e' te&/er%tureho&o8eneity9 %' co&/%red to con"ention%$co&(u'tion

3. NO> e&i''ion c%n (e reduced %' &uch %' 50 %nd&ore9 %' o('er"ed in e>/eri&ent%$ %nd nu&eric%$in"e'ti8%tion'

). Not &%ny orG' h%"e (een conducted in the %re%

*. Co&&erci%$ %//$ic%tion' h%' (een c%rried out on$y

in the %re% o, ,urn%ce0. O/ti&i%tion 'tudy conducted 'ho' th%t there %re

% $ot o, %'/ect' to (e con'idered ,or %n%$y'in8co&(u'tion

. #$o %nd ther&%$ %'/ect' ch%n8ed ,ro&

con"ention%$ to : %&e$e'' co&(u'tion)6610 De/%rt&ent o, Mech%nic%$ 7n8ineerin89 o"tCo$$e8e9 Thri''ur 33

CONCLUSIONS


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1. Nu&eric%$$y in"e'ti8%te 8%'eou' ,ue$ co&(u'tion %thi8h /re''ure ,or 8%' tur(ine %//$ic%tion'

2. Try to De'i8n % no"e$ $%(or%tory 'c%$e ,or%rd :oco&(u'tion ch%&(er ,or MILD6#LO@ co&(u'tion9 ,or

8%' tur(ine %//$ic%tion3. 7>/eri&ent%$$y in"e'ti8%te the nu&eric%$ re'u$t'

o(t%ined ,or '/ecic nu&(er o, c%'e' $i&ited toone 'in8$e e>/eri&ent%$ &ode$9 %nd con'tr%ined 'eto, /%r%&eter'A

). Nu&eric%$$y %n%$y'e the :uid dyn%&ic' %nd ther&%$%'/ect' o, &i>in89 recircu$%tion %nd re'idence ti&ein #or%rd :o ty/e MILD co&(u'tion ch%&(er

)6610 De/%rt&ent o, Mech%nic%$ 7n8ineerin89 o"tCo$$e8e9 Thri''ur 3)

+OP7CT OBP7CTI=7S


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1. Pin84in8 e9 + Mede$$9 7 =%re%9 S Jru'e9 B B D%$$y9H it'ch9 An experimental study on MILDcombustion of prevaporised liquid fuels , Pounr%$o, !//$ied 7ner8y9 1*1 2F1*A 531F1

2. S Jru'e9 B Jer'ch8en'9 L Ber8er9 7 =%re%9 H it'ch9Experimental and numerical study of MILDcombustion for gas turbine applications 9 Pourn%$o, !//$ied 7ner8y9 1) 2F1*A )*0)0*

3. Intern%tion%$ #$%&e +e'e%rch #ound%tion

htt/'V66.i,r,.net6 htt/V66.h%nd(ooG.i,r,.net6h%nd(ooG6c,.ht&$?id11

)6610 De/%rt&ent o, Mech%nic%$ 7n8ineerin89 o"tCo$$e8e9 Thri''ur 3*

+7#7+7NC7

https://www.ifrf.net/http://www.handbook.ifrf.net/handbook/cf.html?id=171http://www.handbook.ifrf.net/handbook/cf.html?id=171https://www.ifrf.net/


36/40

). Po%chi& Wunnin89 Flameless combustion andits applications9 W S Inc9 US!9

*. Bo Liu9 u%nHu% Wn%89 Hon8 @u9 Numerical Studyof eects of re!ector on performance of MILD

furnace "it# for"ard !o" con$guration0. .iit(.%c.in6re'e%rch

. .iitG.%c.in6

. = M%hendr% +eddy9 Sud%r'h%n Ju&%r9Development of #ig# intensity lo" emission

combustor for ac#ieving !ameless combustionof liquid fuels9 ro/u$'ion %nd oer +e'e%rch9 IITBo&(%y9 2F13

5. IS77S Con,erence9 +DSO9 LucGno


+7#7+7NC7

http://www.iitb.ac.in/researchhttp://www.iitk.ac.in/http://www.iitk.ac.in/http://www.iitb.ac.in/research


37/40

1F. i%nc%r$o Sorrentino9 ino S%(i% et.%$. Developmentof a novel cyclonic !o" combustion c#amber forac#ieving MILD%Flameless combustion 9 12 th Intern%tion%$ con,erence on Co&(u'tion 7ner8yUti$i'%tion9 7ner8y roceedi% 00 2F1*A 1)1 1))

11. %>in Su9 Cuiu Chen9 !$on8 SU9 Simulation of &ig#'emperature Air (ombustion "it# modi$ed Eddy)*rea+ ,p combustion model 9 12 th Intern%tion%$Con,erence on !d"%nce' in 7ner8y 7n8ineerin897ner8y roceedi% 1) 2F12A 12 132

12. =$%di&ir L i&ont9 =%$erio B%tt%8i$%9 -oint .ANS%LESmodelling of !ameless combustion 9 C+S)9 Science%nd techno$o8y /%rG9 o$%ri'9 u$%9 It%$y9 Pourn%$ o,7ner8y %nd oer 7n8ineerin89 2F119 39 010 02)


+7#7+7NC7


38/40

13. Chi%r% %$$etti9 !$e''%ndro %rente9 Leon%rdo To8notti9Numerical and Experimental Investigation of aMILD combustion burner 9 De/%rt&ent o, Ch&ic%$7n8ineerin89 Uni"er'ity o, i'%9 It%$y9 Pourn%$ o,Co&(u'tion %nd #$%&e 1*1 2FFA 0)5 00)

1). M%rco M%ncici9 +o&%n We(er9 U8o Bo$$ettini9/redicting N0x emissions of a burner operated inFlameless 0xidation Mode 9 Intern%tion%$ #$%&e+e'e%rch #ound%tion I#+#A9 roceedin8' o, theCo&(u'tion In'titute9 =o$ 259 2FF2 // 11** 1103

1*. Pin84in8 e et.%$. An experimental study on MILDcombustion of prevaporised liquid fuels 9Uni"er'ity o, !de$%ide9 Pourn%$ o, !//$ied 7ner8y9 1*12F1*A 53 1F1


+7#7+7NC7


39/40


. . .Th%nG ou #or our %tience . . .

Xue'tion' ?


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)6610De/%rt&ent o, Mech%nic%$ 7n8ineerin89 o"t

)F

presentatoin on mild combustion

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