Module 1 : Introduction

Lecture 2 : Orientation

 

 

Heat exchange equipment

   a) Shell & Tube heat exchanger
   b) Fired heater
   c) Multiple effect evaporator
   d) Quenching

- Very prominent equipment to heat/cool process fluids

- Include steam/power generation as well!

a) Shell & Tube heat exchanger

- Most common equipment in process industries

- Tube fed with a fluid and shell is fed with another fluid

- Process heat is transferred across the tube

- No mixing of tube fluid and shell fluid allowed

b) Fired heater

- Used to heat streams to extremely high temperatures

- High temperatures generated by burning fuel oil/fuel gas

- Complicated design for maximum heat transfer efficiency

- Shell & tube type/radiation type designs usually adopted

c) Multiple effect evaporator

 

- Common equipment to concentrate a solid-liquid stream from low concentration to high concentrations.

- Steam utility is optimized by adopting process intensification method.

d) Quenching

- Direct heat transfer equipment

- Involves cooling/heating a fluid with direct contact with a stream

- Commonly used for streams emanating with very high temperatures from reactions/furnaces.