Skip to main content
CalcPro

Fluid Catalytic Cracking (FCC) Cat-to-Oil Ratio (CTO) & Heat Balance Calculator

Easily calculate and compute fluid catalytic cracking (fcc) cat-to-oil ratio (cto) & heat balance calculator with accurate equations, live formulas, and expert guidance.

Oil preheat temperature entering riser bottom.

Cracking reaction temperature.

Hot regenerated catalyst temperature.

Calculated Result
5.9 kg/kg

Cat-to-Oil Ratio

Cat-to-Oil Ratio

5.9 kg/kg

Cat To Oil Mass Ratio C T O

5.9

Estimated F C C Conversion Percent

74.8

Catalyst Delta T Kelvin

170

Heat Delivered Per Kg Cat K J

195

5.9 — kg/kg

Calculation Breakdown

  1. Applied FormulaSolves the thermal heat balance between the exothermic catalyst regenerator and endothermic riser reactor to determine the Cat-to-Oil (CTO) circulation ratio in FCC units.\dot{m}_{cat} C_{p,cat} (T_{reg} - T_{rot}) = \dot{m}_{oil} \left[\Delta H_{crack} + \Delta H_{vap} + C_{p,oil}(T_{rot} - T_{feed})\right]

FCC Cat-to-Oil Ratio Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.01.53.04.45.9Cat-to-Oil Ratio

What Is the Fluid Catalytic Cracking (FCC) Cat-to-Oil Ratio (CTO) & Heat Balance Calculator?

This tool computes fluid catalytic cracking (fcc) cat-to-oil ratio (cto) & heat balance calculator with high precision arithmetic.

How Does the Fluid Catalytic Cracking (FCC) Cat-to-Oil Ratio (CTO) & Heat Balance Calculator Work?

Solves the thermal heat balance between the exothermic catalyst regenerator and endothermic riser reactor to determine the Cat-to-Oil (CTO) circulation ratio in FCC units.

Fluid Catalytic Cracking (FCC) Cat-to-Oil Ratio (CTO) & Heat Balance Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

m˙catCp,cat(Treg−Trot)=m˙oil[ΔHcrack+ΔHvap+Cp,oil(Trot−Tfeed)]\dot{m}_{cat} C_{p,cat} (T_{reg} - T_{rot}) = \dot{m}_{oil} \left[\Delta H_{crack} + \Delta H_{vap} + C_{p,oil}(T_{rot} - T_{feed})\right]

Solves the thermal heat balance between the exothermic catalyst regenerator and endothermic riser reactor to determine the Cat-to-Oil (CTO) circulation ratio in FCC units.

How to Use the Fluid Catalytic Cracking (FCC) Cat-to-Oil Ratio (CTO) & Heat Balance Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Fluid Catalytic Cracking (FCC) Cat-to-Oil Ratio (CTO) & Heat Balance Calculator Example

Input Values:

freshFeedPreheatTempC:230.0
riserOutletTemperatureC:535.0
regeneratorDenseBedTempC:705.0
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required kg/kg.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

\n

Related Calculators

Explore more tools and calculators in Chemistry Calculators

Length Converter

Convert length and distance between metric and imperial units including meters, feet, inches, kilometers, miles, and yards with exact SI definitions.

Percentage Calculator

Calculate percentages: what % X is of Y, P% of X, % change, discount price, and percentage points.

Temperature Converter

Convert temperatures between Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R) with step-by-step thermodynamic formulas.

Rachford-Rice Flash Vaporization Calculator

Solves the nonlinear Rachford-Rice flash equation for vapor fraction (V/F) and equilibrium phase split in multicomponent hydrocarbon mixtures.

Hydrogen Electrolyzer Faradaic & Voltage Efficiency Calculator

Calculates water electrolysis Faradaic efficiency, cell voltage efficiency, and specific electrical energy consumption (kWh/Nm³ H2).

Lithium-Ion Battery Capacity Fade & State of Health Calculator

Calculates lithium-ion battery calendar aging, cyclic degradation, remaining capacity, and State of Health (SoH) over operational lifetime.