Oxidation Of Acetaldehyde To Form Acetic Acid.pptx

Sherald Agustin Caryll Joy Franco Justin Guillano

Oxidation of Acetaldehyde to form Acetic Acid

Evita Jill Lusanta Zarah Parsaso

Acetaldehyde Sometimes known as ethanol, is an organic chemical compound. It occurs naturally in ripe fruits, coffee, and fresh bread and is produced by plants as part of their metabolism. In chemical industry, acetaldehyde is used as an intermediate in the production of acetic acid and a number of other chemicals.

Acetic acid Also known as ethanoic acid, is an organic chemical compound best recognized for giving vinegar its sour taste and pungent smell.

Year

Project Demand (million tons)

2014

12.124

2015

12.71808

2016

13.34126

2017

13.99498

2018

14.68074

2019

15.40009

DEMAND

Methods of Preparation 1. Methanol Carbonylation

2.Acetaldehyde Oxidation 3. Oxidative Fermentation 4. Anaerobic Fermentation

PHYSICAL PROPERTIES Acetaldehyde (C2H4O)

Oxygen (O2)

Acetic Acid (CH3COOH)

Peracetic Acid (C2H4O3)

44.054

31.999

60.052

76.05

-123

-218.8

16.6

0

20.4

-183

117.9

76.04

Critical Temperature (°C)

187.8

-118.6

321.2

278.85

Critical Pressure (bar)

55.7

50.5

57.9

60.82

Critical Volume (m3/mol)

0.154

0.073

0.171

0.000198

Liquid Density (kg/m3)

778

1149

1049

348.1

Heat of Vaporization (J/mol)

25749

6824

23697

Standard Enthalpy of Formation at 298K (kJ/mol)

-166.47

0

-435.13

Standard Gibbs Energy of Formation at 298K (kJ/mol)

-133.39

0

-376.94

Physical Hazards

mildly irritating to the eyes , the skin and the respiratory tract, may cause dermatitis

can react violently with common materials

corrosive and can damage the eyes and skin, can also damage the internal organs

Property Molecular Weight (kg/kmol) Freezing Point (°C) Boiling Point (°C)

can cause irritation to the skin, eyes and respiratory system, can cause permanent lung damage

PROCESS FLOW DIAGRAM

FEED

Acetaldehyde, also called Ethanal (CH3CHO), is an aldehyde used as a starting material in the synthesis of acetic acid, n-butyl alcohol, ethyl acetate, and other chemical compounds. It is manufactured by the oxidation of ethyl alcohol and by the catalytic hydration of acetylene (in Germany). Pure acetaldehyde is a colorless, miscible with water, flammable liquid with pungent, fruity odor; it boils at 20.8oC.

Component

Number of kmoles entering in reactor/hr

Mass of component kg entering in reactor/hr

Number of kmoles leaving from reactor/hr

Mass of component kg leaving from reactor/hr

Acetaldehyde

100

4400

19.7260

867.9449

Oxygen

50

2000

50

2000

Nitrogen

7.9365

222.2222

7.9365

222.2222

Water

0.7347

13.2397

0.7347

13.2397

Acetic Acid

-

-

50.0974

3005.8429

INPUT = OUTPUT

Components In

Number of kmoles entering in reactor/hr

Standard heat of formation 𝐇𝐟𝐨 KJ/gmol

Heat of phase change ∆𝐇𝐩.𝐜 KJ/gmol

Sensible heats ∆𝐇𝐬 KJ/gmol

= 𝐧𝐢 ൫𝐇𝐟𝐨 + ∆𝐇𝐩.𝐜 +

Acetaldehyde

100

-166.4

23.2004

42.1921

-10100.75

Water

0.7355

-241.814

42. 5372

11.7817

-137.9026

Oxygen

50

0

5.5898

10.3039

794.6850

Nitrogen

7.9365

0

6.8157

10.1980

135.0292

∆𝐇𝐢

Components Entering the Reactor

Components Out

Moles Out nout Kgmol

Standard heat of formation

Sensible heats ∆𝑯𝒔

𝑯𝒐𝒇 KJ/gmol

Heat of phase change ∆𝑯𝒑.𝒄

∆𝑯𝒊 = 𝒏𝒊 ൫𝑯𝒐𝒇 + ∆𝑯𝒑.𝒄

Acetic Acid

50.0974

-461.1

0

23.2910

-21933.0926

Acetaldehyd

19.7260

-166.4

23.2004

42.1921

-1992.4739

Water

0.7347

-241.814

0

11.7817

-169.0047

Oxygen

50

0

0

10.3039

515.1950

Nitrogen

7.9365

0

0

10.1980

80.9364

e

Components Leaving the Reactor

𝑿𝑨

−𝒓𝑨 (mol/m3.s)

𝑭𝑨𝒐ൗ −𝒓𝑨 (m3)

0

25

1.3889

0.1

22.5

1.5432

0.2

20

1.7361

.3

17.5

1.9841

0.4

15

2.3148

0.5

12.5

2.7778

0.6

10

3.4722

0.7

7.5

4.6296

0.8

5

6.9445

0.9211

1.578

17.6032

Space 𝜏 = 2918.5678 𝑠

Time

𝐷 = 2.14314 𝑚 𝐿 = 6.42942 𝑚

HEIGHT AND DIAMETER OF THE REACTOR

SPECIFICATION SHEET Equipment

Reactor

Type of reactor

Continuous Stirred Tank Reactor

Operating temperature

60 °C

Operating pressure

1 atm

Volume of reactor

23.1633 m3

Reactor Height

6.5 m

Diameter of Reactor

2.14 m

Thickness of shell

9 mm

Material of Construction

Stainless Steel

Support type

Leg support