Process Simulation with Aspen HYSYS

Propane Refrigeration is one of the main operation loop that engineers should both practice and understand. Therefore, before building-up propane refrigeration loop, you can take a valuable information about process itself. In this video, you will:

• Understand each step of propane refrigeration;

• Apply your knowledge to the vapor compression-expansion cycle;

• Get an introduction to start your HYSYS process simulation

Now, the technical side of loop should be clarified by adding the needed streams and equipment. Here, you will see how Aspen HYSYS reacts the process which was explained in previous video. In this lecture, you will:

• Apply the knowledge about the described process into Aspen HYSYS;

• Work with various operating conditions and

• Their affect to the propane refrigeration loop

Sometimes you might need to add the specific unit operations for illustrating their connection to the simulation that you are working on. So, this lecture aims to:

• Help how to add a specific unit operation to the workbook and Process Flow Diagram (PFD) and

• Light up the significance of object inspection

Since you have built up the propane refrigeration loop and entered the necessary input, you have probably missed how successfully Aspen HYSYS made back-calculations. To show this amazing feature of HYSYS, you will analyze the results within this lecture and:

• Understand the reason of why the equipment duty and pressure drop are important;

• See the reaction of Aspen HYSYS to the sudden changes within the operation

Two-stage compression as a part of multi-stage compression is commonly used to deliver high pressures. This video, will be helpful for you to:

• Overview the process before building it up and

• Acknowledge the advantages of two-stage (multi-stage) compression usage

Now, the technical side of loop should be clarified by adding the needed streams and equipment. Here, you will see how Aspen HYSYS reacts the process which was explained in previous video. In this lecture, you will:

• Apply the knowledge about the described process into Aspen HYSYS;

• Work with various operating conditions and equipment like valve, compressor, heater, cooler and etc.) and

• See the affect of them to the two-stage compression

Two-stage compression involves the need for recycling, so that, it is better to have a look at recycling operation separately. We give the practical side and robust explanation of recycling operation in this lecture where you can take the benefits of:

• Using the conditions of assumed and calculated streams and

• Analyzing the reaction of Aspen HYSYS to the theoretical recycle block

While you have built the two-stage compression simulation, you have not seen the detailed discussion about the necessary equipment. This lecture aims to:

• Give detailed and useful information about unit operations used in this process;

• Overview of the main parameters of the needed equipment and

• See how Aspen HYSYS and these unit operations work together for process building-up

As a final lecture in this chapter, analyzing the results part generally takes a look at the overall process and some needed parameters that should be pointed out. In this video, you will:

• Notice the requirements for adding inlet fluid and pressure conditions;

• Analyze the second stage of compressor and vapor outlet and

• See the unit operations that had both uplifted and decreased the pressure and temperature

Calculation of Water Content and Gas Hydrate predictions can be regarded as one of the most primary topics in petroleum and related operations. This lecture will direct you over:

• The importance of water content calculations;

• The basic principle behind water content calculations and

• The overall information about gas hydrates and their formation conditions

In this video, you will see:

• The reaction of Aspen HYSYS to water dew point and its calculation and

• Explanation related to the necessity of the topic for industry.

Since the hydrate and its formation conditions were explained during the previous lecture, you can now proceed the hydrate inhibition through Aspen HYSYS by:

• Understanding its meaning and possible problems related to hydrate formation

• Simulating the inhibition technique developed within Aspen HYSYS

A typical glycol dehydration process comprises two parts of dehydration and regeneration that is used to meet a pipeline specification. In this lecture, you will:

• Overview the process and TEG Contactor column and

• Determine the amount of water that can be removed from the wet gas stream in certain conditions

Now, the technical side of loop should be clarified by adding the needed streams and equipment. Here, you will see how Aspen HYSYS reacts the process which was explained in previous video. In this lecture, you will:

• Apply the knowledge about the described process into Aspen HYSYS;

• Work with various operating conditions and equipment like mixer, separator, heat exchanger and

• See how the number of stages in column and operating conditions affect the absorption process

Second part for building up the simulation completes the entire process with the regeneration step. So after watching the video, you will be able to:

• Comprehend the collaborative work done by condenser, reboiler and absorption tower;

• Experience the necessity of Jole-Thomson effect and

• Apply the recycle operation to replace feed with new calculated lean recycle stream

In previous sections, the types of hydrates and their formation conditions have been discussed, but now, it is an exact time to see how Aspen HYSYS deals with this phenomenon. In this lecture, you will learn:

• Three ways to attach a hydrate formation utility

• How to create new utility and

• The relationship between the hydrate formation temperature and flowrate of main fluid

As a final lecture in this chapter, analyzing the results part generally looks at the overall process and some needed parameters that should be pointed out. In this video, you will analyze:

• How to define the dew-point temperature of water dew-point stream;

• Affect of Tri-ethylene glycol on the water dew-point and

• The principle behind the component splitter

More practical module is in the arena! Gas gathering is also essential operation that should be simulated over Aspen HYSYS given with its topographic map. In this video, you will:

• Work on the network of pipelines and apply them on Aspen HYSYS;

• See the relationship between line sizing/pressure drop and pipe design parameters

Now, the technical side of the loop should be clarified by adding the needed streams and equipment. Here, you will see how Aspen HYSYS reacts to the process which was explained in the previous video. In this video, you will learn:

• How to add pipe segments within Aspen HYSYS;

• Analyzing the various parameters of pipe segment, such as rating, heat transfer page and etc. and

• See how HYSYS background calculations lead the system to process

As it was for other sections, analyzing the results part is based on the specific points that have been discussed while building up the simulation. In this analysis, you will:

• Understand how Aspen HYSYS treats both pressure and temperature drop and

• See the implementation of theory about pressure drop and elevation

In order to ensure informative data supply, you are given with this lecture to visualize the pressure drop and pipe sizing relationship. This lecture aims to show:

• The necessity of pressure drop for pipe sizing;

• The possible problems may occur due to the pressure drop and

• How Aspen HYSYS deals with them

This lecture is based on theoretical, but valuable information about pump and compressors and their key differences. Here you will:

• See how the pump and compressors are classified depending on pressure and flow rate specifications and

• Grasp the significance of both equipment that is used to deliver a fluid

People from an engineering discipline understand the importance of curves for modelling the plant equipment accurately. In this workshop, you will learn:

• How to add compressor curves instead of manual handwriting on Excel and plotting the figure for that;

• The effect of adiabatic ratio, efficiency and other factors on compressor curves and

• How the compressor reacts to the sudden fluctuations of inlet stream conditions

This workshop aims to deliver useful information about:

• The selection criteria of the pump and its significance;

• The distinction between pump performance curve and system curve;

• How to use the necessary data from pump curves and

• Apply them in pump sizing

Natural Gas Liquids (NGL) are the components of natural gas which is separated from the gas state in the form of liquids. Recovery or fractionation of NGL is quite common in the industry and aims to deliver:

• The outline of plant construction and

• The necessity of absorption and mass transfer in this section

Now, the technical side of loop should be clarified by adding the needed streams and equipment. Here, you will see how Aspen HYSYS reacts the process which was explained in previous video. In this workshop, you will work on:

• De-methanizer which can be modelled as reboiled absorber operation;

• The column property view and its important pages, such as column specification, monitor and etc.

This lecture illustrates the practical side of simulation that has started with a mixture of two streams and:

• Used reboiled absorber and de-ethanizer  and

• Separated the streams further into heavier and lighter products

As it was for other sections, analyzing the results part is based on the specific points that have been discussed while building up the simulation. In this analysis, you will:

• The purpose of reboiled absorber usage;

• The importance of achieving the required process for distillation column and

• Distinguish why and when the absorber and distillation column is used