assignment cre(chemyvengers)

7/25/2019 Assignment CRE(Chemyvengers)

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1 Without pressure drop


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Graph 1: X vs W (without pressure drop)

Graph 2: Ca vs X (without pressure drop)


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2 With Pressure Drop

2.1 Varying the alpha value

2.1.1 Alpha = 0.003


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Graph 3.1: X vs y (given alpha value)

2.1.2 Alpha = 0.006

Table 3: When !".""# g$1

Graph 3.2: X vs y (alpha value is double)


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2.2 Varying the weight value

2.2.1 Weight = 1000g

Graph %.1: X vs W (assu&ed value o' W)


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2.2.2 Weight = 500g

Graph %.2: X vs W (value o' W is double)

2.3 a vs !

Graph : Ca vs X


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2." # vs W

" 1"" 2"" 3"" %"" "" #"""

1"

1

2"

2

# vs W

w

#

Graph : vs W


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3 Dis$ussion

Conversion (X) *ea+tor ength (,")-lpha

alue

dy

dW=

2y(1+X)

T

T0

-++ording to e/uation above0 alpha

value ae+t the +onversion value.

When the value o' alpha in+rease0

the +onversion will de+rease. This is

appli+able when there is pressure

drop.

-lpha value does not

ae+t rea+tor length as

alpha value does not

involve in e/uation to

nd rea+tor length.

*ea+toria&eter

When the dia&eter in+reases0 thegas +ould +hannel and bypass &ost

o' the +atalyst resulting in little

+onversion.

*atio o' heat trans'er sur'a+e area to

rea+tor volu&e (+atalyst weight) will

be de+rease0 thereby &a4ing heat

trans'er &ore di5+ult 'or highly

e6other&i+ and endother&i+

rea+tion.

W!(1$ ) A c Z c

W!(1$ ) D

2

4Z c

*ea+tor dia&eter ae+ts

rea+tor length be+ause

when there is in+rease in

rea+tor inner dia&eter0

rea+tor length will

de+rease.Catalyst

Consu&pti

on

FA0dx

dW=k[ CA0(1X)(1+X) ]

1

2 [CA0(4.762X)(1+X) ]3

2

7ased on the e/uation above0

+atalyst +onsu&ption ae+t the

+onversion.

8!4W

D2 (1 ) c

Catalyst +onsu&ption

ae+ts the rea+tor

length. The rea+tor

length should be in+rease

in order to in+rease the

weight o' +atalyst


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+onsu&ption.

assignment cre(chemyvengers)

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