Lec 23: Chlor-Alkali Industry – Soda Ash

Introduction to the Chlor-Alkali Industry, including the production of major chemicals and the significance of studying this industry as a chemical engineer.

Discussion on the production of soda ash or sodium carbonate, the dominating product of the chlor-alkali industry, and its essential role in chemical production.

The widespread distribution of major products from the chlor-alkali industry in the chemical industry, emphasizing the importance of studying this industry for chemical engineers.

Exploration of the reasons for studying the chlor-alkali industry, such as the commonality of sources for chemical production and the necessity of chlorine and sodium hydroxide in various industries.

Explanation of the production achievements and processes involved in soda ash production, highlighting the role of limestone and the exceptional purity of chemicals produced in the industry.

Detailed overview of the diverse applications of soda ash in industries such as glass, soaps, detergents, and chemical manufacturing, showcasing its versatility and demand in the market.

In-depth discussion on the ammonia soda process for producing soda ash, covering chemical reactions, purification of brine, and the role of ammonia and carbon dioxide in the process.

Explanation of the recovery and reuse of ammonia in the soda ash production process, along with insights on modernizing plant operations for efficiency and cost-effectiveness.

Insight into the kinetics of the precipitation reaction in soda ash production, detailing rate-controlling steps and the necessity of maintaining the reaction sequence for optimal results.

Overview of the recovery and reuse of ammonium chloride, including modifications to the soda ash production process for enhanced efficiency and reduced costs.