Скачать или смотреть Lec 5 | Caustic Embrittlement | Boiler Problem & Softening Methods | Engineering Chemistry | B.Tech

Lec 5 | Caustic Embrittlement | Boiler Problem & Softening Methods | Engineering Chemistry | B.Tech 1st Year

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Welcome to Lecture 5 of Boiler Problems & Softening Methods in Engineering Chemistry (B.Tech 1st Year).

In this lecture, we discuss Caustic Embrittlement, a serious type of boiler problem that weakens boiler metal and leads to dangerous failures if not treated properly.

🔹 What You Will Learn in This Lecture:

Introduction to Caustic Embrittlement

Meaning of caustic embrittlement

How it differs from general corrosion

Causes of Caustic Embrittlement

Use of highly alkaline water in boilers

Presence of sodium carbonate and its hydrolysis

Concentration of NaOH in cracks and stressed parts of boiler

Mechanism of Caustic Embrittlement

How alkali attacks boiler metal (iron/steel)

Electrochemical reaction process

Harmful Effects

Cracking of boiler metal

Weakening of joints and bends

Safety risks in boiler operation

Prevention Methods

Use of phosphate conditioning

Addition of tannin, lignin, or sodium sulphate

Avoiding high alkalinity in feed water

Proper water softening methods

📖 This lecture is part of the Boiler Problems & Softening Methods series of Engineering Chemistry for RGPV and other B.Tech 1st Year syllabi.

✨ After this lecture, you will clearly understand:

What caustic embrittlement is

Causes and mechanism of the problem

Preventive measures used in industries

🔔 Don’t forget to watch the complete series on Boiler Problems (Sludge, Scale, Priming, Foaming, Corrosion & Caustic Embrittlement) and Water Softening Methods.
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