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

This document discusses the process of manufacturing 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 through the dehydrogenation of isopropanol. The primary reaction to make isopropanol involves absorbing propylene into a tray tower with sulfuric acid at room temperature and 20-25 atmospheres of pressure, producing isopropyl acid sulfate as an intermediate that is then hydrolyzed to isopropanol and regenerating the sulfuric acid.

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48 views1 page

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

This document discusses the process of manufacturing 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 through the dehydrogenation of isopropanol. The primary reaction to make isopropanol involves absorbing propylene into a tray tower with sulfuric acid at room temperature and 20-25 atmospheres of pressure, producing isopropyl acid sulfate as an intermediate that is then hydrolyzed to isopropanol and regenerating the sulfuric acid.

Uploaded by

shamsullah hamdard
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© © 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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