simulation unisim

EP313
Chemical Process Simulation and Design

L1 - Introduction

10/1/2014

Process modeling: Concept 1
Identification: our objective is to find structure, R of the process.
We must know the input, I and output, O parameters. I

R?

O

10/1/2014

Process modeling: Concept 2
Simulation: our objective is to get the value of O.
We know the structure of the model, R and we can simulate what the output, O for the given input, I.

I

R

O?

10/1/2014

Process modeling : Concept 3
Optimization: our objective is to minimize the usage of raw material subject to output, O and model, R constraints. We know the desired output, O and the structure, R of the model.

I?

R

O

Note: Optimization is not limited to this concept. It can be applied depending on the usage and objective of the problem.

10/1/2014

Introduction
1.
2.
3.
4.

The design project scenario
Process design steps
Computer aided process simulation
Basic concepts of process simulation

10/1/2014

Process design
The design involved with the identification and creation of potential opportunities to satisfy societal needs and to generate profit.
They can be roughly classified as:
1. Basic chemical products.
2. Industrial products.
3. Consumer products.

10/1/2014

Process design
Natural Resources

Basic Chemical Product
Upstream Production Plant

Basic Chemical Product

Industrial Products
Intermediate Production Plant

Industrial Products

Consumer Products

Downstream Production Plant

10/1/2014

Motivation for Process Design
1. Desires of customers for chemicals with improved properties for many applications.

2. Discovery of a new inexpensive source of raw material with comparable physical and chemical properties to the old source.
3. New markets are discovered.

10/1/2014

Region of all designs
Resources

Plausible designs Government Controls

Methods

Possible designs External