hydrogen peroxide manufacturing process
DESCRIPTION
Sachin Hadavale, Shital Jagtap and Mayur ZunjarraoTRANSCRIPT
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SHITAL JAGTAP
SACHIN HADAVALE
MAYUR ZUNJARRAO
GUIDE:- PROF. A K BANDSODE
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INTRODUCTIONHydrogen peroxide (H2O2) is the simplest peroxide
Hydrogen peroxide is a clear liquid, slightly more viscous than water.
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HISTORY Hydrogen peroxide was first manufactured in 1818 by Louis Jacques Thenard
by reacting barium peroxide with nitric acid. An improved version of this process used hydrochloric acid, followed by sulfuric acid to precipitate the barium sulfate byproduct. Thenard's process was used from the end of the 19th century until the middle of the 20th century.
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LITERATURE SURVEYNo Process Date Auther
1 Direct production of hydrogen peroxide from oxygen and
hydrogen applying membrane-permeation mechanism
1 Jan 2010 Tomoya Inoue, Yusuke Tanaka,
Koichi Sato
2 Anthraquinone process for the production of hydrogen
peroxide
May 2008 Qunlai Chen
3 Hydrogen Peroxide production by water electrolysis
13 October 2004
Yuji Ando, Tadayoshi Tanaka
4 Hydrogen Peroxide production by oxidation of cyanide
15 October 2007
Susana Silva Martínez
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5 Hydrogen peroxide formation by direct combination of H2 and O2 in a
micro reactor
16 January 2010
Yury Voloshin, Adeniyi Lawal
6 Hydrogen peroxide synthesis by direct photo reduction of 2-
ethylanthraquinone
1 January 2011 Mao Mao,
Xue-You Duan,
7 Catalytic synthesis of hydrogen peroxide in micro reactors
4 April 2008 K. Kusakabe,
Maehara
8 Photochemical production of hydrogen peroxide in Antarctic
Waters
6 June 2000 David J. Kieber
9 Direct synthesis of hydrogen peroxide from hydrogen and oxygen
over palladium catalyst
25 July 2009 Ji Chul Jung,
Sunyoung Park,
10 Direct synthesis of hydrogen peroxide from H2 and O2 using zeolite supported Au catalysts
30 May 2006 Albert F. Carley,
Jennifer Edwards
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PHYSICAL PROPERTIESMolecular formula H2O2
Molar mass 34.0147 g/mol
Appearance light blue to colourless
Density 1.450 g/cm3 (20 °C)
Melting point -0.43 °C, 273 K, 31 °F
Boiling point 150 °C, 423 K, 302 °F
Solubility Soluble in ether
Refractive index 1.34
Viscosity 1.245 cP (20 °C )
Specific heat capacity 2.619 J/g K (liquid)
pH 6.2
Std enthalpy offormation ΔHf 298 k
-4.007 kJ/g
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USES Pulp and paper Mining Textile bleaching Controlling fungus on fish and eggs Waste water treatment Healing wounds Explosive
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MARKET SURVEY
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0
20000
40000
60000
80000
100000
120000
140000
160000
2005-06 2006-07 2007-08 2008-09 2009-10 2010-11
DEMAND
SUPPLY
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IMPORT AND EXPORTIMPORT EXPORT
COUNTRY QUANTITY (Kg)
COUNTRY QUANTITY (Kg)
China 5155989 Untd. Arab Emts.
1167115
Indonesia 2268897 Bangladesh 1156390
Rep. Of Korea
1121118 Maldives 400000
Turkey 887374 Sri Lanka 259830
Taiwan 600277 Kenya 105000
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MANUFACTURING PROCESSES Wet Chemical Process Electrochemical Process Autoxidation Process
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The Wet Chemical Process Disadvantages
High capital costLow hydrogen peroxide contentUnsatisfactory stability
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Electrochemical processAdvantages
More conc. H2o2
High purity H2o2
DisadvantagesHigh capital investmentHigh electricity consumption
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AUTOXIDATION PROCESS Hydrogen peroxide is manufactured almost
exclusively by the autoxidation (AO) process. The process is based on a reduction of anthraquinone, followed by oxidation resulting in the formation of H2O2.
Hydrogen peroxide is separated from water with extraction and is concentrated to produce grades at standard commercial strengths of 35 - 65%.
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Reactions Of Autoxidation Process
Hydrogenation
Oxidation
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Process Selection
Higher industrial applicabilityGreater purity of H2O2
Ease of operationEasy availability of raw materialLesser cost of raw materialRecycle of raw materialLesser power requirement
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THERMODYNAMIC FEASIBILITY
Components Heat Of Formation(KJ/mol)
Heat Capacity(KJ/ Kmol °C)
2-Ethyl Anthraquinone
C16H12O2
-111.021 453.4
2-Ethyl Hydroquinone
C16H14O2
-132.46 489.4
Hydrogen Peroxide
H2O2
-45.16 70.79
HydrogenH2
0 28.65
OxygenO2
0 26.1
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For Hydrogenation Reaction that is
C16H12O2 + H2 →C16H14O2
Heat of Formation of above reaction at 298 K is
ΔHf 298K = ΣΔHf Products - ΣΔHf Reactant
= - 132.46 - ( - 111.021)
= - 21.439 KJ/molThe specific heat is givaen as follows
ΔCP = ΣΔCP Products - ΣΔCP Reactant
= 489.4 - (453.4 + 28.65)
=7.35 KJ/ Kmol °C
The heat of reaction at working temp.
ΔHR 313 K = ΔHf 298K
= -21439 + (7.35) (40 - 25)
= -21328 KJ/KmolThe entropy of Hydrogenation Reaction
ΔSR 313 K = ΔSR° +
At const temp ΔSR°= 0
ΔSR 313 K = 7.35 ln (40/25)
= 3.454 KJ/Kmol °C
40
25
PdtC
dtT/C40
25
P
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The Gibbs free energy
Δ G 313 k = ΔHR 313 K - T ΔSR 313 K
= -21328.75 - 40 X 3.54
=- 21446.93 KJ/Kmol (Less than zero)
Consider second reaction taking place in oxidizer
C16H14O2 + O2 →C16H12O2 + H2O2
ΔHf 298K = ΣΔHf Products - ΣΔHf Reactant
= ( - 111.021 - 45.16) - ( - 132.46 )
= -23.721 KJ/mol
ΔCP = ΣΔCP Products - ΣΔCP Reactant
= 453.4 + 70.79 - 489.4 - 26.1
= 8.69 KJ/ Kmol °C
ΔHR 323 K = ΔHf 298K
= -23721 + 8.69 ( 50 - 25 )
=-23503.75 KJ/Kmol
ΔSR 323 K = ΔSR° +
= 0 + 8.69 ln ( 50/25 )
= 6.023 KJ/ Kmol °C
50
25
PdtC
dtT/C50
25
P
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The Gibbs free energy
Δ G 323 k = ΔHR 323 K - T ΔSR 323 K
= - 23503.75 - 50 X 6.023
= -23804.922 KJ/Kmol (Less than zero)
From the above values it can be seen that the values of Gibbs Free energy at respective working temp. is less than zero, which is the ideal case scenario. Thus both the reactions are feasible and thereby the selected process is also feasible.
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BibliographyPerry's handbook of chemical engineering 8th
editionUllmans Encyclopedia WikipediaSciencedirect.comwww.cheresources.com
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