Pik Industri Soda
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Transcript of Pik Industri Soda
7/23/2019 Pik Industri Soda
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INDUSTRI SODA
Soda Ash dan Caustic
Soda
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SODA ASH (Na2CO3)
• Bentuk hidrat : Sodium carbonatmohonidrat, sodium carbonat heptahidrat,sodium carbonat decahidrat
Monohidrat : Na2O!"#2O $%"&$ ' Na2O! ()&,%2 ' air
#eptahidrat : Na2O!"*#2O &%"* Na2O! ( &%"!' air
Decahidrat : Na2O!")+#2O-sa. soda/ atau -0ashin1 soda/ !*,+3 Na2O! ( 32,4& ' air
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PROSES PEMBUATAN SODA ASH
• 5e B.anc 6rocess
• Trona 6uri7cation 6rocess
• Dua. 6rocess
• SO58A9 6rocess atau AmmoniaSoda6rocess
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Soda Ash : 5e B.anc 6rocess
• Le Blanc roasting salt cake + carbon + limestone
dalam rotary furnace, leaching the product with water
SODA AS !"a#$O%&
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5e B.anc 6rocess
Reaksi 6embentukan Soda Ash pd 5e B.anc 6rocess :
2Na.(#2SO& Na2SO&(2#5
&(Na2SO& Na2S(&O
Na2S(aO!
Na2O!(aS Treatment o; aS :
aS ( #2S aS#2
aS#2 ( O2 ( #2O aO! ( 2 #2S
#2S ( < O2 #2O ( S
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SODA AS# : Trona 6uri7cation6rocess
TRONA : Minera. karbonat den1an rumus kimia Na!O!
#O!=2#2O
Ada 2 >enis proses :
)" ?a.sinasi trona
impure soda ash
puri7cation
pure soda ash MONO#IDRAT@ 6RO@SS
2" ?a.sinasi puri7ed sesuisodiumcarbonat dari trona
SODIUM S@SUIARBONAT@ 6RO@SS
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Trona 6uri7cation 6rocess :Monohidrate 6rocess
?a.sinasi trona pada rotarC ki.n )%+!++ de1 dekomposisi sodium sesuicarbonatNa2O!"Na#O!"2#2O Na2O!, #2O, O2
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Trona 6uri7cation 6rocess : SodiumSesuicarbonate process
rushed trona disso.e saturated mother.iuor"
Ssaturated mother .iour eaporated inaccum crCstra..iEers, coo.ed to &+ de1 krista. sodium sesuicarbonate centri;u1e krista. sesuicarbonate
?rista. sesuicarbonate ka.siner 2++ de1
soda ash
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SO58A9 6rocess
Bahan Baku :
Brine Na., komposisi 2$' 0F0
Batu kapur aO!
Ammonia
Reaksi oera.. :
?onsep proses : ?arbon dioksida dia.irkan ke da.am .arutan 1aram >enuh
den1an ammonia akan men1hasi.kan natrium hidro1en
karbonat"N#! ( #2O ( O2 H N#&#O!
NaI ( N#&#O! H Na#O! ( N#&I
?onersi natrium hidro1en karbonat Natrium ?arbonat
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B5O? DIARAM So.aC 6rocess
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TAHAP PROSES (1)
• (i) Aonia a!so"!#"
2NH3 $ H2O $ CO2 % (NH&)2 CO3
AdanCa kandun1an a dan M1 pada .arutan
brine : aI2 ( N#&2 O! H aO! J ( 2N#&I
M1I2 ( N#&2 O! H M1O! J ( 2N#&I
• (ii) Ca"!onation To'#" (SOA* TO+ER)
N#! ( #2O ( O2 H N#&#O!
NaI ( N#&#O! H Na#O! J ( N#&I
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TAHAP PROSES (2)
• (iii) ,i-t"ation
The so.ution containin1 crCsta.s o; Na#O! is
dra0n oK ;rom the base o; the carbonation to0erand 7.tered to 1et Na#O
!"
• (i.) The Na#O! obtained ;rom the aboe step
is heated stron1.C in ki.n to coert it into sodium
carbonate Na2O!2Na#O! H Na2O! ( O2 ( #2O
The carbon dioLide produced here is sent tocarbonation to0er"
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TAHAP PROSES (&)
• (.) Aonia "#co.#"/ to'#"
N#&#O! H N#! ( #2O ( O2
2N#&I ( a O#2 H 2N#! ( 2#2O ( aI2
(.i) i# 0i-n
T )!++ ?
aO! H aO ( O2
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Caustic Soda (NaOH)
• Dipero.eh dari dekomposisi brineNa. secara e.ektro.itik"
• 6roses pembuatan : ' ?imia : 5imeSoda 6rocess
' @.ektrokimia : h.oro A.ka.i 6rocess
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h.oroA.ka.i 6rocess
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austic Soda den1an @.ektro.itik6rocess
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