Fly Ash and Carbon Beneficiation

7/25/2019 Fly Ash and Carbon Beneficiation

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UnburntCoal romFly Ash

By

R B Sai Yashvanth2012A1PS390G

Mohit Sainani2012A1PS417G


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About Century Rayon

Estabishe! in 19"2 an! the #ro!u$tion starte! in 19"%&

'n $ourse o( ti)e the #ro!u$tion in$rease! (ro) 2000 *PA to 2"000 *PA&

+ther #ro!u$tions a#art (ro) rayon ,a)ent are Anhy!rous So!iu) Su#hate

-.a2S+4/ So!iu) y!roi!e -.a+/ y!roen -2/ Chorine -C2/&

Aroun! 2" o( the #o5er re6uire)ents are )et by its o5n #o5er #ant #ro!u$in

%M o( the tota 22 M re6uire!&


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8arious e#art)ents

*here are % )a:or !e#art)ents o( the 5hoe #anare;

Rayon #ant

*yre Cor! an! CSY #ant

Auiiary -CS2

A$i! #ant an! ater treat)ent/

'nstru)entation

Boier an! Po5er house

Che)i$a #ant -#ro!u$in Causti$ Chorine y!


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Boiers

A Boier or stea) enerator is a !evi$e use! to $stea) by a##yin heat enery to 5ater&

+!er ones 5hi$h use! to 5or< at o5 #ressures $o))ony ter)e! as boiers an! the one 5or


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Boier ouse at Century Rayon

')#ortant #arts o( boier house at $entury rayon A=BC boier

S#rea!er Sto % M

*ota #o5er re6uire! > 22 M

Baan$e borro5e! (ro) MECB


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=y Ash

=y ash is one o( the resi!ues enerate! in the$o)bustion o( $oa&

*he $o)#onents an! the #ro#erties o( ?y ash va$onsi!eraby !e#en!in on the variety o( $oa e5hi$h it is bein burnt !esin o( the boier unit

o( #uveri@ation storae )etho!s Et$& Aroun! 70 tonnes o( ?y ash is bein #ro!u$e! at

Century Rayon&

+vera in 'n!ia annuay )ore than 170 )iion o( ?y ash is enerate! an! aroun! %"000 a$res o

is o$$u#ie! by ash #on!s&


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Environ)enta Probe)s

*he ?y ash bein !is#ose! $auses a seriousenviron)enta ha@ar!s in )any 5ays

Groun! 5ater $onta)ination

S#is o( bu< storae

Conta)inants

E#osure $on$erns


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ses o( =y Ash

*he re$y$e! ?y ash $an be use! in )any #ro!u$tenineerin #ra$ti$es

Portan! $e)ent

E)ban


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ses o( ?y ash


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=y Ash Bri$< *e$hnooy

Bri$


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.ee! o( bene,$iation o( unburn$arbon

an!, !is#osa $osts are risin ra#i!y E$essive $arbon re!u$es the )ar


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*y#es o( =y Ash; Co)#arison

Class F

-#o@oani$/

Pro!u$e! (ro) burnin o( har!ero!er bitu)inous anthra$ite $oas

Po@oani$ in nature H10 i)e -Ca+/ More ass au)inosii$ate ass

an! 6uart@

Class C

-$e)entious hy!raui$/

Pro!u$e! (ro) burnin youneinite or subbitu)inous $oas

Po@oani$ an! se($e)entin#ro#erties

I20 i)e More $a$iu) su(ate (ree i)e

M+

Cass = ?y ash is the #ri)e variety o( ?y ash enerate!'n!ia

'n )ost $ases both have si)iar #er(or)an$e (or

$e)entious #ur#ose


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*y#es o( =y Ash; Co)#osition


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=roth ?oatation o( $oa (ro) ?y *he $on!itionin aent

#re(eraby $o)#rises abio!era!abe oi 5hi$h isa!!e! to a surry $ontaininra5 ?y ash an! 5ater

*he $on!itionin aentren!ers the $arbon in the ?y

ash hy!ro#hobi$ #on aeration o( the surry air

bubbes atta$h to the $arbon#arti$es an! $arry the) to thesur(a$e o( the surry in the(or) o( a (roth

ab e#eri


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=roth ?oatation o( $oa (ro) ?y

Re#resentation o( e#eri)enta resuts

C in #ro!u$t o( net C re$over!


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Chara$teristi$s o( nburne! Carbon Parti$es Re$o(ro) =y Ash by =oatation

Sho5 sins o( sini,$ant oi!ation that has e! t#orous (ra)ente! #arti$e stru$ture

Generay 6uite )a$ro #orous #rovi!in oo! a$air to #enetrate to the insi!e

Most o( the $arbon is #resent in !istin$t $arbonr

#arti$es*he inorani$ ash #arti$es are usuay $a#ture!

arer $arbon #arti$es

A$tive sur(a$e area is ess than that o( $o))er$avaiabe a!sorbent ra!e $arbon


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ses (or the retrieve! $arbon

Can be sent ba$< to the boier (or $o)bustion Can be use! as a an a!sorbent u#strea) o( the

$ontro the )er$ury e)issions (ro) $oa,re! bu


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=y Ash; An 'n!ustria Che)i$aResour$e


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+ther *e$hnooies; Carbon Bur+ut CB+ $o)busts resi!ua

$arbon in ?y ash#ro!u$in a very$onsistent o5 $arbonhih6uaity #o@@oan

*he #ro$ess is $ontinuousan! is (uee! soey by

the resi!ua $arbon*he ?ui!i@e! be! is

heate! 5ith a startu#burner unti the be! te)#rea$hes auto inition


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Carbon Burn+ut

eat is re$overe! an! sentba$< to the #o5er #ant thatoriinay #ro!u$e! the hih$arbon ?y ash

A##i$ation o( o5.+burners in re$ent years as a

resut o( Cean Air A$tre6uire)ents have !rivenresi!ua $arbon eves in ?yash hiher

Can brin +' (ro) 20 to 2

CB+ te$h as #atente! te$hnoo ies


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=uture o( =y Ash

Sour$e; S Enery 'n(or)A!)inistration

o)esti$(resh ?y ashsu##ies 5ibe !e$reasinover the net

20 years an!beyon!


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=uture o( =y Ash

Sour$e; A)er


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E.

Fly Ash and Carbon Beneficiation

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