Reactor Sizing Calculator (CSTR)

Reactor Sizing Calculator

Molar Flow Rate F_A (mol/s):

Initial Concentration C_A0 (mol/m³):

Conversion X (0–1):

Rate Constant k (1/s):

Reactor Volume (m³):

About Reactor Sizing (CSTR)

Reactor sizing is a critical step in chemical process design. For a Continuous Stirred Tank Reactor (CSTR), the volume is determined from the flow rate of reactant, reaction rate constant, concentration, and desired conversion.

The formula for CSTR sizing is:

V = (F_A × X) / (k × C_A0 × (1 – X))

Where:
F_A = Molar flow rate (mol/s)
C_A0 = Initial concentration (mol/m³)
X = Conversion fraction (0–1)
k = Rate constant (1/s)

FAQs

Q: What type of reactor does this calculator apply to?
A: This calculator applies to Continuous Stirred Tank Reactors (CSTR).

Q: What if I need Plug Flow Reactor (PFR) sizing?
A: A different integral formula is required for PFR. This tool currently supports CSTR.

Q: Why is conversion (X) important?
A: Conversion specifies how much reactant is consumed and directly affects reactor size.