Subpart Y Catalytic Cracking, Fluid Coking, and Catalytic Reforming Unit Information

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To delete an existing Catalytic Cracking, Fluid Coking, or Catalytic Reforming Unit, click on the delete icon, which is the last column in the CATALYTIC CRACKING UNITS, TRADITIONAL FLUID COKING UNITS, FLUID COKING UNITS WITH FLEXICOKING DESIGN, AND CATALYTIC REFORMING UNITS EMISSIONS SUMMARY table.

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Subpart Y collects the following data about your Catalytic Cracking, Fluid Coking, or Catalytic Reforming unit:

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When you are finished entering the required information, click NEXT.NEXT.

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For Catalytic Cracking or Coking units that are NOT monitored by CEMS, Subpart Y also collects the following data:

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When you are finished entering the required information, click SAVE.

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For Catalytic Cracking or Coking units that are monitored by CEMS, Subpart Y also collects the following data:

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Note

Note that Fluid Coking Units with Flexicoking Design for which the GHG emissions from the low heat value gas are accounted for in Subpart C require no emissions or additional data under Subpart Y thus the OPEN button is black and has no function.

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Note

Depending on the methods selected to calculate CO2, CH4 and N2O emissions (see previous section titled "Adding “Adding or Updating Catalytic Cracking, Fluid Coking, or Catalytic Reforming Unit Information"Information”), you will be presented with screens to collect the respective CO2, CH4 and N2O emission results and additional data. Each specific screen is discussed below.

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The annual CO2 emission rate from the unit operations is required. To calculate this value download the spreadsheet by clicking the link titled "Use “Use Y-6 spreadsheet to calculate." ” Fill in the spreadsheet using the instructions in the spreadsheet. After completing the spreadsheet, copy the value of CO2 calculated by the spreadsheet to this page in the box next to "Annual “Annual CO2 emission from this unit type unit (metric tons)."”

Subpart Y also collects the following CO2 emission data:

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The Equation Y-6 Summary and monitored flow requirements are presented in the screenshot below. You can hover over an element in the equation to reveal a definition of that element..

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CO2 Emissions Calculation: 98.253(c)(2) – Equation Y-6 and Y-7a
The annual CO2 emissions from the unit operations is required. To calculate this value download the spreadsheet by clicking the link titled "Use “Use Y-6 and Y-7a spreadsheet to calculate." ” Fill in the spreadsheet using the instructions in the spreadsheet. After completing the spreadsheet, copy the value of CO2 calculated by the spreadsheet to this page in the box next to "Annual “Annual CO2 emission from this unit type unit (metric tons)."”
The Equation Y-6 and Y-7a Summaries are presented on the page. You can hover over an element in the equation to reveal a definition of that element.
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The Equation Y-6 and Y-7a Summaries are presented in the screenshot below. You can hover over an element in the equation to reveal a definition of that element.
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CO2 Emissions Calculation: 98.253(c)(2) – Equation Y-6 and Y-7b
The annual CO2 emissions from the unit operations is required. To calculate this value download the spreadsheet by clicking the link titled "Use “Use Y-6 and Y-7b spreadsheet to calculate." ” Fill in the spreadsheet using the instructions in the spreadsheet. After completing the spreadsheet, copy the value of CO2 calculated by the spreadsheet to this page in the box next to "Annual “Annual CO2 emission from this unit type unit (metric tons)."”
Subpart Y also collects the following CO2 emission data:
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The Equation Y-6 and Y-7b Summaries are presented in the screenshot below. You can hover over an element in the equation to reveal a definition of that element.
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CO2 Emissions Calculation: 98.253(c)(3) – Equation Y-8
The annual CO2 emissions from the unit operations is required. To calculate this value download the spreadsheet by clicking the link titled "Use “Use Y-8 spreadsheet to calculate." ” Fill in the spreadsheet using the instructions in the spreadsheet. After completing the spreadsheet, copy the value of CO2 calculated by the spreadsheet to this page in the box next to "Annual “Annual CO2 emission from this unit type unit (metric tons)."”
For this method, Subpart Y also collects the basis for the carbon content value:
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The Equation Y-8 Summary is presented in the screenshot below. You can hover over an element in the equation to reveal a definition of that element
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CO2 Emissions Calculation: 98.253(c)(3) - Equation Y-11
The annual CO2 emissions from the unit operations is required. To calculate this value download the spreadsheet by clicking the link titled "Use “Use Y-11 spreadsheet to calculate." ” Fill in the spreadsheet using the instructions in the spreadsheet. After completing the spreadsheet, copy the value of CO2 calculated by the spreadsheet to this page in the box next to "Annual “Annual CO2 emission from this catalytic reforming unit (metric tons)."”
For this method, Subpart Y also collects the total number of regeneration cycles or measurement periods, as well as the average coke burn-off quantity per cycle or measurement period.
The Equation Y-11 Summary is presented in the screenshot below. You can hover over an element in the equation to reveal a definition of that element.that element.
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CH4 Emissions Calculation: Equation Y-9
The annual CH4 emissions from the unit operations is required. To calculate this value download the spreadsheet by clicking the link titled "Use “Use Y-9 spreadsheet to calculate." ” Fill in the spreadsheet using the instructions in the spreadsheet. After completing the spreadsheet, copy the value of CH4 calculated by the spreadsheet to this page in the box next to "Annual “Annual CH4 emission from this unit type unit (metric tons)."”
The Equation Y-9 Summary is presented in the screenshot below. You can hover over an element in the equation to reveal a definition of that element.
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CH4 Emissions Calculation: Unit-Specific Measurement Data
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The CH4 Summary (Measurement Data) is presented in the screenshot below.
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CH4 Emissions Calculation: A Unit-Specific Emission Factor Based on a Source Test of the Unit
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The CH4 Summary (Emission Factor Based on a Source Test) is presented in the screenshot below.
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N2O Emissions Calculation: Equation Y-10
The annual N2O emissions from the unit operations is required. To calculate this value download the spreadsheet by clicking the link titled "Use “Use Y-10 spreadsheet to calculate." ” Fill in the spreadsheet using the instructions in the spreadsheet. After completing the spreadsheet, copy the value of N2O calculated by the spreadsheet to this page in the box next to "Annual “Annual N2O emission from this unit type unit (metric tons)."”
The Equation Y-10 Summary is presented in the screenshot below. You can hover over an element in the equation to reveal a definition of that element.
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N2O Emissions Calculation: Unit-Specific Measurement Data
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The N2O Summary (Measurement Data) is presented in the screenshot below.
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N2O Emissions Calculation: A Unit-Specific Emission Factor Based on a Source Test of the Unit
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The N2O Summary (Emission Factor Based on a Source Test) is presented in the screenshot below..
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#Back to Top
See Also
Screen Errors
 Using e-GGRT to Prepare Your Subpart Y Report
 Subpart Y Summary Information for this Facility
 Subpart Y Delayed Coking Unit Information
 Subpart Y Asphalt Blowing Unit Information
 Subpart Y Coke Calcining Unit Information
 Subpart Y Catalytic Cracking, Fluid Coking, and Catalytic Reforming Unit Information
 Subpart Y Flares Unit Information
 Subpart Y Process Vents Unit Information
 Subpart Y Sulfur Recovery Plant Information
 Subpart Y Emissions Information for Process Units Monitored by CEMS
 Subpart Validation Report



    
    

            
    

    




    
    

    
    
    


    

        

 
   

  

  

    
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