IECM 12.0 beta User Manual > Modules Included with the IECM > Pulverized Coal (PC) Plant > SET PARAMETERS > Fuel > 2. Fuel >

Fuel Properties

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The Fuel Properties parameter screen allows you to select a coal, biomass or waste coal and modify its properties. (Integrated Gasification Combined Cycle (IGCC) plants only support coal and do not support blends.) It is a standard parameter screen with a database button at the top to allow you to select the fuel from a database.

The version of this screen found in the 2d. Fuel Blend process type does not have the database button, and the name and higher heating value (HHV) are the only editable parameters.

The following parameters are shown:

•Percentage of this fuel in the blend: (only shown for individual fuels) This shows the percentage of this fuel in the blend. If you are using a single fuel, this will be 100%. This value is shown here for reference; if you need to change it, you would do that on the Config screen.

•Fuel Type: the type of this fuel, one of the following:

•Coal

•Biomass

•Waste Coal

•Blend: only shown on the blend screen, this indicates that the individual fuels are not all the same type.

•A fuel-type-specific category. On the blend screen, this will only be shown if all of the fuels in the blend have the same type. One of the following will be shown:

•Coal Rank: (coal) The rank of a coal refers to the degree of coalification endured by the organic matter. It is estimated by measuring the moisture content, specific energy, reflectance of vitrinite or volatile matter (these are known as rank parameters). On the blend screen, this is a composite coal rank of the blend.

•Category: (biomass) The following categories are available:

•Energy Crop: This is a crop grown solely for the purpose of energy production.

•Agricultural Residue: This is the portion of a crop grown for other purposes that remains after processing.

•Forestry Residue: This is the residue remaining after a logging operation, e.g. small trees, branches, bark, sawdust, etc.

•Other: This will be shown on the blend screen if all of the components are biomass, but they are not all in the same category. This option is not available for individual fuels.

•Mining Approach: (waste coal) The following options are available:

•Underground: This refers to coal mined from a deeper deposit.

•Surface: This refers to coal mined from a relatively shallow deposit.

•Other: This will be shown on the blend screen if all the components are waste coal, but they do not all have the same mining approach. This option is not available for individual fuels.

•Name: This is the name of the fuel. It may be the trade name or an identifier supplied by the user. We recommend that you use a unique identifier to avoid confusion, but this is not required.

Next, a list of editable fuel properties is displayed (only the HHV is editable on blend screens), followed by the Total percentage of all the components for reference. It should always be 100%. The Total is highlighted in yellow.

Note:

For biomass with a moisture content > 20%, we recommend drying prior to use.

Warning:

Uncertainty on this screen should only be used for Batch Processing. Varying the components independently does not make sense - if one percentage is higher, another percentage will need to be lower to keep the total at 100%.