Skip to main content

Advertisement

Table 2 Key process assumptions regarding the RJF conversion technologies [8, 29, 30, 55, 56]

From: Life-cycle analysis of greenhouse gas emissions from renewable jet fuel production

Process Unit HEFA [29] FT [55] Pyrolysis [56] HTL [56] ATJ [30] DSHC [8]
Sub-process Ex situ In situ Ex situ In situ Increased blend level 10% blend level
Inputs
 Feed MJ feed/MJ RJF 1.17 12.93 26.39 26.39 16.89 16.89 1.49a 6.28 3.25
 Natural gas consumptionb MJ/MJ RJF 0.18         
 Electricity consumption MJ/MJ RJF 0.005    1.53 0.21 0.86 0.03   
 Hydrogen consumption MJ/MJ RJF 0.15   5.44   1.31   0.08 0.52 0.12
 Hydrogen feedstock   Natural gas   Natural gas Process off-gases Natural gas Process off-gases and waste water Natural gas Natural gas Natural gas
Outputs
 Co-product allocation ratio
  RJF Normalized 1 1 1 1 1 1 1 1 1
  Diesel MJ/MJ RJF   3.00 2.95 2.95 2.95 2.95 0.12 0.15  
  Gasoline MJ/MJ RJF   1.69 7.88 7.88 4.57 4.57    
  Heavy fuel oil MJ/MJ RJF    2.17 2.17 1.65 1.65    
  Naphtha MJ/MJ RJF 0.14       0.21 0.54  
  Propane MJ/MJ RJF 0.10 0.49        
  Methane MJ/MJ RJF   0.24        
  Electricity MJ/MJ RJF   0.45 0.51      0.13 0.07
  1. aFeedstock is ethanol
  2. bExcluding natural gas used for hydrogen generation