5 Block Flow Diagrams
Learning Objectives
By the end of this section, you should be able to:
Construct block flow diagrams (BFDs) for chemical processes
Block Flow Diagrams
We typically break down chemical and biological processes (or any other process) into units representing equipment. These are called unit operations and are drawn as circles or squares:
Lines with arrows represent the flow of materials in streams to and from units. These lines have only 1 arrowhead:
Materials in each stream are labeled above or beside the stream:
Exercise: BFD Components
What are some errors in the following flowsheet? How would you change the flowsheet to address these errors?
Solution
We can correct the BFD to following:
Feedback/Errata