Introduction to CHEMCAD Process Simulation Software

Agung Ari Wibowo, S.T, M.Sc

Dept. of Chemical Engineering

Politeknik Negeri Malang

What is Process Simulation Software

Process simulation software

describes processes in flow diagrams where unit operations are positioned and connected by product or educt streams. The software has to solve the mass and energy balance to find a stable operating point. The goal of a process simulation is to find optimal conditions for an examined process.

SoftwareAdvantagethe speed and accuracy of process simulation begins to save tremendous time and money. And not only for design changes

“Working smart is harder than

working hard. It’s just less

visible, and we care too much

about what others see.”

CHEMICAL PROCESS

Raw Material Processing

Main Process/ ReactorPurification

Chemical Process Equipments

Fluid Transport

» Pump (liquid)

» Compressor (Gas/Vapor)

» Expander (Gas/Vapor)

Heat Exchanger

» Double Pipe

» Shell and Tube

» Plate and Frame

Reactor

» CSTR

» PFR

Purification

» Distillation Column

» Absorption Column

» Extraction Column

» Decanter

» Flash

1.CHEMCADSupercharges an engineer’s efficiency when facing the toughest chemical process models or addressing day-to-day challenges

Course Material

» Basic Simulation of Chemical Process Support Equipment

» Basic Simulation of Reactor» Basic Simulation of Distillation Column» Sensitivity Analysis» Chemical Plant Simulation

BIG

CONCEPTUsing sensitivity analysis to improve process quality

We work here

List of Equipment

Notification pane

Selecting Component

Getting Started with CHEMCAD

To Change Thermodynamics Model

Getting Started with CHEMCAD

Getting Started with CHEMCAD

Thermodynamics Model Selection Guide

Getting Started with CHEMCAD

Getting Started with CHEMCAD

CHEMCAD dapat melakukan perhitungan flash berikut:

• P-T

•Vf-P

•Vf-T

P : Tekanan

T : Temperatur

Vf : Vapor Fraction

Jika kita memasukkan T, P dan Vf akan terjadi Error (Consistency Error), karena tidak seseai

dengan Degree of Freedom dari Hukum Gibbs

2.FLUID TRANSPORT

EQUIPMENTAlthough liquids particularly can be transported by operators carrying buckets, the usual mode of transport of fluids is through pipelines with pumps, blowers, compressors, or ejectors

Pump for liquid fluid

Compressor

Expander

3.Heat ExchangerAn Equipment being used for heating or cooling the processed material.

Heat Exchanger type 1

Feed, 5 kmol/h water and ethanol, T = 150 C, P= 101.3 kPa

Heat Exchanger type 2

Heating Medium, 500 kg/h water, T = 150 C, P= 101.3 kPa

Heat Exchanger

4.FLASH SEPARATORA vapor–liquid separator may also be referred to as a flash drum, breakpot, knock-out drum or knock-out pot, compressor suction drum or compressor inlet drum

Flash Separator : Vapor - Liquid

Feed, 5 kmol/h water and ethanol, T = 150 C, Vf= 0.5

Flash Separator : VLLE / LLE

Feed, 5 kmol/h water and benzene, T = 150 C, Vf= 0.5

immiscible

Flash Separator : VLLE / LLE

Feed, 5 kmol/h water and benzene, T = 150 C, Vf= 0.5

Flash Separator : VLLE / LLE

Stream No. 1 2 3 4

Flow rates in kg/h

Water 90.075 42.5117 42.7295 4.8337

Benzene 390.57 206.2737 0.682 183.6143

Thank You