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Lecture 18: Isopropanol and Acetone From Propylene: Module 3: Petrochemicals

This document discusses the production of isopropanol and acetone from propylene. Isopropanol is produced via the hydration of propylene using sulfuric acid in a gas-liquid reaction under high pressure. Acetone is then generated from isopropanol through dehydrogenation. The primary reactions for isopropanol production involve sulfation of propylene to form isopropyl acid sulfate, which then undergoes hydrolysis to form isopropanol and regenerate sulfuric acid.

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174 views1 page

Lecture 18: Isopropanol and Acetone From Propylene: Module 3: Petrochemicals

This document discusses the production of isopropanol and acetone from propylene. Isopropanol is produced via the hydration of propylene using sulfuric acid in a gas-liquid reaction under high pressure. Acetone is then generated from isopropanol through dehydrogenation. The primary reactions for isopropanol production involve sulfation of propylene to form isopropyl acid sulfate, which then undergoes hydrolysis to form isopropanol and regenerate sulfuric acid.

Uploaded by

shamsullah hamdard
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Module 3 : Petrochemicals

Lecture 18 : Isopropanol and Acetone from Propylene

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18.1 Introduction

• In this lecture we study the process technology associated to the manufacture of


isopropanol and acetone.

• Isopropanol is manufactured from hydration of propylene.

• Acetone is produced using the dehydrogenation route of isopropanol.

• We first present the isopropanol process technology.

18.2 Isopropanol manufacture

18.2.1 Reaction

Sulfation: CH3CHCH2+ H2SO4→(CH3 )2 CH(OSO3H) (Isopropyl acid sulphate).

Hydrolysis: Isopropyl sulphate +H2O→ Isopropanol + Sulfuric acid.

Thus sulphuric acid is regenerated in the process.

Side reaction: Disiopropyl sulphate + H2O→ Diisopropyl ether + Sulfuric acid.

Therefore, the primary reaction is a gas liquid reaction in which propylene is absorbed into a
tray tower fed with sulphuric acid.

Operating conditions: Room temperature but 20 – 25 atms pressure.

Reaction is highly exothermic.

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