Process Simulation Using Aspen HYSYS V8.4

Why Aspen HYSYS?

Aspen HYSYS is a market-leading process modeling tool for conceptual design, optimization, business planning, asset management, and performance monitoring for oil & gas production, gas processing, petroleum refining, and air separation industries. Aspen HYSYS is a core element of AspenTech’s aspenONE™ Process Engineering applications.

Getting Started

• Workshop • The Getting Started module introduces you to some of the

basic concepts necessary for creating simulations in HYSYS. Some of the things you will learn from this module are:

• Methods for moving through different environments • Selecting property packages and components • Adding streams • Attaching utilities • You will use HYSYS to define three streams. You will learn

how to determine the properties of these streams by using the Property Table utility.

Getting Started

• Learning Objectives

• Once you have completed this section, you will be able to:

• Define a Fluid Package (Property Package and Components)

• Add Streams

• Understand Flash Calculations

• Attach Stream Utilities

• Customize the Workbook

Getting Started

• Example:

• We have a stream containing (Nitrogen 0.01 %, CO2 3.2%,H2S 1.5% , Methane 69%, Ethan 10.65 % , Propane 8.56 %, I-Butane 3.25 % , N-butane 1.1 %, I-Pentane 0.76 % , n-Pentane 1.09 % , C6+ 0.68 % , Water 0.2 % at 50°F and atmospheric pressure, and a flow rate of 100lbmole/hr. This stream is to be compressed to 50 psia and then cooled to 32°F. The resulting vapor and liquid are to be separated as the two product streams. Neglect the pressure drop inside the condenser.

• C6+ Properties (API = 46 & MW= 236)

• Fluid pakage: Peng Robinson

• What are the flow rates and molar compositions of two product streams?

• Create a case study to see the effect of changing temperature of the cooler out stream on the molar flow of the liquid product stream, and write your comment.

Getting Started

• To start the program, From Start Menu, Select All Programs >>Aspen Tech >> Process Modeling V8.4 >>>> Aspen HYSYS >> Aspen HYSYS

Getting Started

• First, Start a new case

Getting Started

• Add the Components

Getting Started • Choose the system components from the databank:

Getting Started/ Adding Component

Getting Started/ Adding Hypothetical Component

Getting Started/ Adding Hypothetical Component

Getting Started/ Adding Hypothetical Component

Getting Started/ Fluid Package

• Now, select the suitable fluid package

• Note :Click method assistance to recommend you whish fluid package is suitable for your system.

Getting Started

• For Hydrocarbons system select Peng-Robinson property package

Getting Started

• Now you can start drawing the flow sheet for the process by clicking the Simulation button

Getting Started

• Now add a material stream to define the composition and the conditions of the feed stream From the palette:

Getting Started/ Stream Conditions & Properties

Getting Started

You can change the stream name by simply typing in a new name in the Stream Name box.

Getting Started /Selecting a Unit Set

Getting Started /Adding Separator

Getting Started /Adding Compressor

Getting Started /Adding Compressor

Getting Started /Adding Cooler

Getting Started /Adding Cooler

Getting Started / Results

Getting Started / Case Study

• Case Study We need to study the effect of changing the Temperature of the cooler out stream (stream To Two Phase Separator) on the flow rate of the liquid product stream. Use range: from -30 to 30 oC with step size =5 oC To create a case study in HYSYS you can simply click on Case Studies button on the Home menu:

Getting Started / Case Study

• Add the two variables Navigator:

Getting Started / Case Study

• Fill the independent variable data & Press Run

Getting Started / Case Study

Getting Started / Stream Analysis