CRE Lecture 13: Zero-Order Kinetics | Industrial Reactor Design of CSTR, PFR, Batch & PBR Explained

Описание: 🚀 "CRE Lecture 13 – Zero-Order Kinetics | Industrial Reactor Design of CSTR, PFR, Batch & PBR Explained | Industrial Numerical Example's | Now Live!"

🔍✨ "What This Lecture Covers in Detail"

🔹 "1. Industrial Numerical Problem – Problem Statement (Clearly Explained)"
In this lecture, we start with a standard industrial reactor design problem:

• Reaction: "A → B"
• Operation: "Isothermal, continuous-flow reactor and Batch reactor"
• Volumetric flow rate: "ν₀ = 15 dm³/h"
• Entering molar flow rate: "Fₐ₀ = 6 mol/h"
• Feed concentration: "Cₐ₀ = Fₐ₀ / ν₀ = 0.4 mol/dm³"
• Desired conversion: "90% conversion of A"
• Exit concentration: "Cₐ = 0.1 Cₐ₀"

👉 "This same industrial data set will be used across multiple lectures."

🔹 "2. Core Teaching Philosophy of This Lecture"
In this lecture, we systematically follow a true engineering approach:

✔ Keep all operating parameters constant
✔ Change only the reaction order
✔ Apply design equations for:
  – CSTR
  – PFR
  – Batch Reactor
  – Packed Bed Reactor (PBR)
✔ Compare reactor performance based on:
  – Reactor volume
  – Time / Space Time
  – Catalyst requirement
✔ Draw clear engineering conclusions

This approach helps develop deep conceptual clarity, not just numerical skills.

🔹 "3. Focus of CRE Lecture 13: Zero-Order Reaction (Only)"
👉 In this lecture, the complete solution is presented ONLY for zero-order reaction kinetics.

• Rate law: "−rₐ = k"
• Rate constant: "k = 0.04 mol/(dm³·h)"

Using zero-order kinetics, we solve step-by-step for:

✔ CSTR volume and space time
✔ PFR volume and space time
✔ Batch reactor volume and time or space time requirement
✔ Packed Bed Reactor (PBR): catalyst weight required, volume and space time

• Clear explanation of why all reactors give identical volume and space time for zero-order reactions
• Strong physical interpretation of zero-order behavior in industrial systems

🔹 "4. Packed Bed Reactor (PBR) – Zero-Order Kinetics"
• Mole balance written on a catalyst-weight basis
• Calculation of required catalyst weight for 90% conversion
• Relation between reaction rate, conversion, catalyst weight, and reactor performance
• Practical insight into fixed-bed reactor design

🔹 "5. Graphical & Conceptual Understanding"
• Reaction rate vs concentration
• Reaction rate vs volume
• Reaction rate vs space time
• Concentration vs reactor volume
• Conversion vs reactor volume
• Conversion vs space time

🔔 "What’s Coming in the Upcoming CRE Lectures"

📌 "First-Order Reaction Kinetics"
• Same industrial problem
• New rate law
• Complete reactor design solutions
• Performance comparison {CSTR, PFR, BATCH & PBR}

📌 "Second-Order Reaction Kinetics"
• Same operating conditions
• Strong contrast with zero- and first-order reactions
• Deeper industrial interpretation
• Performance comparison {CSTR, PFR, BATCH & PBR}

👉 "Same reaction system. Same operating parameter data. We will change reaction kinetics and Model of the Reactors. Draw Clear engineering learning and conclusions."

🎯 "Who This Lecture Is Perfect For"

👨‍🎓 UG & PG Chemical Engineering students, educators, researchers, and industrial professionals — this session will strengthen your fundamental understanding of reactors and their volume design.
📚 GATE, university, and other competitive exam aspirants
⚙️ Process and design engineers looking to refresh core fundamentals
📘 Anyone beginning or revising Chemical Reaction Engineering 🧑‍🏫

⏳ "What You Will Clearly Understand After Watching"
• How to design chemical reactors for industrial reaction kinetics, starting from real operating data
• How to solve industrial reactor design problems using zero-order kinetics
• Why reactor type does not change volume and space time for zero-order reactions
• How reaction order governs reactor sizing, time, and catalyst requirement
• How to apply design or performance equations of CSTR, PFR, Batch, and PBR for industrial systems
• How to confidently extend this industry-oriented design methodology to first- and second-order reactions in upcoming lectures

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🙏🏻🪷Jay Ambe🪷🙏🏻