Introduction

Cycad Process is a comprehensive tool for drawing Process Flow Diagrams and calculating the mass and energy balance.

Cycad Process can be used to describe mineral processing plants, hydrometallurgical operations, pyrometallurgical operations, and chemical plants. In addition, Cycad Process can be used to describe batch operations.

The drawing of the flowsheet is designed to be both easy to use and to produce engineering quality Process Flow Diagrams (PFDs).

The combination of obtaining the PFD and the mass and energy balances in one step can save the engineering team a great deal of time and effort.

In addition, Cycad Process allows the user to easily compare one revision of output with another. This practical tool is a major time saving device in the development of a process.

There are six topics in this tour of the Cycad Process application:

  1. The Interface Layout.
  2. The Page Viewer.
  3. The Process Library.
  4. Adding Equipment to the Page
  5. The Property Viewer.
  6. The Cycad Process Ribbon.
  7. The Stream Manager.

In the next six topics you will take a tour of these features of Cycad Process...


Interface Layout

The default layout of Cycad Process, which follows standard Windows patterns, is shown in Figure 1.

The user can change the layout of the program by docking the windows in different locations.

Each of the major layout elements will be discussed in the topics that follow on from this Overview.

1

Figure 1. Interface layout of the interface for Cycad Process.

 


Page Viewer

The Page Viewer represents the page for drawing the flow sheet and calculation of the mass and energy balance.

A custom layout is provided in which the mass and energy balance is represented as a table along the bottom of the page.

The equipment list is represented in a table on the upper right-hand side of the page, while tables in the bottom right-hand corner display the following information: the name of the client, the project name, the project number, etc.

The Page Viewer is shown in Figure 2.

2

Figure 2. The Page Viewer.


Process Library

The Process Library is a list of templates (equipment) which can be added to the page to represent the process flowsheet.

The Process Library is located on the left-hand side of the default page in Figure 1, as shown in Figure 3 below.

3

Figure 3. The Process Library.


Adding Equipment to the Page

A unit of equipment is added to the page by clicking the left mouse button on the template in the Library and dragging it over to the page displayed in the Page Viewer with the left mouse button still depressed.

Releasing the mouse button adds the equipment to the page at the point where the left mouse button was released.

An example of adding a template from the Library to the Page is shown in Figure 4.

4

Figure 4. Adding the HeatExchanger element to the process flow diagram.


Property Viewer

The Property Viewer displays all properties of the drawing elements, including each of the pieces of equipment and each process stream.

The Properties Viewer is shown in Figure 5.

If the user selects the equipment by clicking on it with the left mouse button, the properties of that unit are displayed in the Properties Viewer.

Properties that are shown in bold can be changed by the user, while the user cannot change those in a gray color.

5

Figure 5. The Property Viewer.

If the user selects a property in the Property Viewer, a description of that property is displayed in the box at the bottom of the Property Viewer.

Properties that can be expanded are shown with + sign within a square box on the left of the particular property.

Clicking this + sign, the property will expand, and the + sign will change to a - sign to indicate that it can be contracted by clicking again.


The Cycad Process Ribbon

Cycad Process consists of a ribbon containing a number of tabs. Each of these tabs contain tools that allow the user to:

  • connect equipment by process streams,
  • add components (chemicals) to the system and,
  • calculate the mass and energy balance.

Each of the tabs will be briefly presented here.

Home Tab

Figure 6 shows the home tab.

6

Figure 6. Home Tab.

Drawing Tab

Figure 7 shows the drawing tab.

7

Figure 7. Drawing Tab.

Overview → Click on this to show the page overview toolbar (typically used for zooming in/out in the page view).

Properties → Click on this to show the properties toolbar.

Process Library → Click on this to show the process library toolbar.

Setup Balance Tab

Figure 8 shows the Setup Balance tab.

8

Figure 8. Setup Balance Tab.

Stream Manager
  • Click on this to open the stream manager tab.
Add Components Button
  • Clicking on this button launches the Components Selection Form, which allows the user to select the chemical components for the process to be simulated.
Manage Components Button
  • Clicking on this button launches the Manage Project Components Form, which allows the user to edit components already in the project, add user defined components and even include components from the database (see Tutorial 8).
View Distributions
  • Loads the “DistributionSheetAndChart” used for setting, managing and viewing particle size distributions (see Tutorial 8 and 9).
Process Stream Tool
  • Click on this tool to draw Process Streams that connect pieces of equipment, cursor will change to indicate that this tool has been selected.
  • Process Streams represent the flow of material from one piece of equipment to another, and it is the values of these flows that determine the mass and energy balance of the process.
Design Connector Tool
  • This tool is similar in operation to the Process Stream Tool, except that it connects the signals and measurements that are associated with the Designers.
  • There are two designers, a Flowsheet Designer and a Unit Designer, these are used to specify desired values in a particular process stream.
Calculate Tab

Figure 9 shows the Calculate tab.

9

Figure 9. Calculate Tab.

Run Project Button
  • Selecting this button submits the whole flowsheet to the mass and energy balance calculating engine.
Run Page Button
  • Selecting this button submits the current page to the mass and energy balance calculating engine.
Run Selected Pages Button
  • Selecting this button launches the Select Pages Form, where the user can enter a particular set of pages in the flow diagram that are to be calculated by the mass and energy balance calculating engine.
Run Selected Unit Button
  • Selecting this button submits only the selected process unit or piece of process equipment to the mass and energy balance calculating engine.
Run Selected Units Button
  • Selecting this button submits the selected or highlighted units and all associated unit Designers to the mass and energy balance calculating engine.
Calculation Options Button
  • Selecting this button loads a form where calculation parameters can be modified.
View Convergence Button
  • Selecting this button loads a form which shows the previous runs convergence results.
Parameter Estimation Button
  • Selecting this button loads a form where the parameter estimation settings and data are entered. Parameter estimation must be selected in Calculation options form before it can be used.
Toggle Visibility of Design Elements Button
  • Selecting this button determines whether the designers and design connectors are visible or not. They should not be visible if the output is meant as a Process Flow Diagram.
Toggle Visibility of Watch Element Button
  • Selecting this determines whether the Watches are visible or not.
  • Watches are block elements that display selected values in a particular stream, and can be used to quickly and easily display critical values to the user as he or she develops the mass and energy balance.
Reports Tab

Figure 10 shows the Reports tab.

10

Figure 10. Reports Tab.

Mass Balance Button → Selecting this button opens the mass balance report.

Equipment List Button → Selecting this button opens the equipment list report.

Production Button → Selecting this button opens the production and reagents report.

Design Criteria Button → Selecting this button opens the design criteria report.

Component Information Button → Selecting this button opens the component information report.

Water Balance Button → Selecting this button opens the water mass balance report.

Element Balance Button → Selecting this button opens the element-based mass balance report.


Stream Manager

The Stream Manager is a spreadsheet like tool for entering the data for the Process Streams.

The Stream Manager is accessed by selecting the "Stream Manager" button from the “Setup Balance Tab” of the Ribbon. The Stream Manager is shown in Figure 11.

The main features of the Stream Manager are that they allow the user to input data, and they report the results of the mass and energy balance on completion of the calculation.

The use of the Stream Manager is discussed later in these help files.

11

Figure 11. The Stream Manager.