Chemistry Coal & Petroleum Part 7 (Destructive distillation of Coal) Class 8 VIII

TL;DR

Destructive distillation of coal involves heating coal to high temperatures in the absence of air, resulting in the formation of coal tar, coal gas, liquid ammonia, and coke.

Transcript

hello friends this video on coal and petroleum part 7 is brought to you by example calm no more fear from exam so now the question is how do we get these useful products out of coal how do we obtain them from coal so for that purpose we have this process called destructive distillation of coal now this is a type of distillation where the coal is co... Read More

Key Insights

• ✋ Destructive distillation of coal involves heating coal to high temperatures in the absence of air, resulting in the formation of useful products.
• ✴️ Coal tar is a black viscous liquid used in various industries such as perfumes, plastics, paints, medicines, and roofing materials.
• 🧑‍🏭 Liquid ammonia, obtained from coal, acts as an excellent fertilizer for plant growth.
• 🫢 Coal gas, a mixture of gases, is primarily used as a source of heat.
• 🖤 Coke, a porous black residue, is a cleaner fuel alternative to coal and is used in the manufacturing of steel.
• 🫢 Coke can also be used to produce gases like water gas, which further contribute to the production of coal gas.
• ⛽ Destructive distillation of coal removes the smoke-producing constituents, making coke a cleaner fuel option.

Questions & Answers

Q: What is destructive distillation of coal?

Destructive distillation of coal is a process where coal is heated to high temperatures in the absence of air, resulting in the formation of useful products such as coal tar, coal gas, liquid ammonia, and coke.

Q: What are the uses of coal tar?

Coal tar is a black viscous liquid that is useful in the manufacturing of products like perfumes, plastics, paints, medicines, and roofing materials.

Q: How is liquid ammonia obtained from coal?

Liquid ammonia is obtained as a colorless layer above coal tar during the destructive distillation of coal. It contains a lot of dissolved ammonia and acts as an excellent fertilizer for better plant growth.

Q: What is coke and how is it used?

Coke is a porous black substance that is left over after the destructive distillation of coal. It is a pure form of carbon and is used as a reducing agent in the manufacturing of steel. It is also used as a cleaner and more efficient fuel in stoves and furnaces.

Summary & Key Takeaways

• Destructive distillation of coal is a process that involves heating coal to over 1,000 degrees Celsius in the absence of air.

• The process yields four useful products: coal tar, coal gas, liquid ammonia, and coke.

• Coal tar is a black viscous liquid used in the manufacturing of products such as perfumes, plastics, paints, medicines, and roofing materials.

• Liquid ammonia acts as an excellent fertilizer for plant growth.

• Coal gas is a flammable fuel primarily used for heating purposes.

• Coke, a porous black residue, is a clean fuel alternative to coal and is used in the manufacturing of steel.