sulphuric acid kel

8/17/2019 Sulphuric Acid Kel

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H2SO4

Sulphuric

Acid


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How is Sulphuric Acid

made? The Contact Process

What is needed?Sulphur DioxideAirWaterCatalyst – Vanadium (V !xide


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" Production o# Sulphur

Dioxide1) S(s) + O2(g) SO2(g)

2)4FeS2(s) + 11O2(g) 2Fe2o3(s) + 8SO2(g)

3) 2CaSO4(s)+C(s) 2CaO(s)+CO2(g)+2SO2(g)


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ion o# Sulphur Dioxide to Sulphur Tr

2SO2(g) + O2(g) 2SO3(g)

H = -196 kJmol -1

Temperatre ! 4"##C


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in$ the Sulphur Trioxide to Sulphuri

H2S#

4(l) +SO

3(g) H

2S

2#

$(l)

H2S2#$(l) + H2O (l) H2S#4(l)


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Sitin$ o# A

Sulphuric Acid

Production Plant


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Considerations to %e made include&'Sources o# aw )aterials – sulphur

ores* access to Vanadium !xide

+Sources o# Power – hi$htemperatures needed to oxidise

Sulphur Dioxide

,Transport #acilities – limitedinteraction with metal as this

li%erates Hydro$en $as

-Water esources – water isneeded #or the process


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The uses o# compounds o#

Sulphur

" Sulphur1sed to 0ulcani2e natural

ru%%er3 impro0in$elasticity and tensile

stren$th4umi$ants and #un$icides)ost sulphur is used to

produce Sulphur Dioxide5


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" SulphurDioxideeducin$ a$ent

used to %leach wool3straw and paper5

Preser0ation o# #ood3

alcoholic drin/s and


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" Sulphuricacid4ertili2ers

Deter$entsCar %atteriesHi$h Stren$th 4i%res

Paints 6 Pi$ments


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The impact o#the Sulphuric

Acid industry onthe en0ironment


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Sulphuric acid production is a 0eryclean process3 pro0idin$ minimalris/s o# en0ironmentalcontamination5

Almost all the processes used in

the production o# sulphuric acidactually result in the reduction o#addition o# sulphur dioxide to the

atmosphere Then3 sulphur dioxide that remainsunused durin$ the Contactprocess is recycled and scru%%ed

with %asic solutions – some non"


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sulphuric acid kel

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