Publication Details

Title : Updates of Hydrogen Production from SMR Process in GREET® 2019
Publication Date : September 30, 2019
Authors : P. Sun, A. Elgowainy
Abstract : The hydrogen production pathway using steam methane reforming (SMR) of natural gas (NG) is updated in GREET 2019, based on a recent study by Sun et al. (2019). This study investigated U.S. stand-alone SMR facilities and reported criteria air pollutant (CAP) and greenhouse gas (GHG) emissions per unit of hydrogen production, using SMR facility emission data reported in the National Emissions Inventory (NEI) and the Greenhouse Gas Reporting Program (GHGRP) databases, respectively. The study summarized the CO2 emission associated with hydrogen production by accounting for emissions both from combustion and chemical conversion processes. The median CO2 emission normalized for SMR hydrogen production was 9 kg CO2/kg H2 production, or 75 g CO2/MJ H2 (using H2 low heating value [LHV]). The median emission is similar with the value of 9.26 kg CO2/kg H2 in GREET 2018, which was based on the H2A modeling by Rutkowski et al (2012). For other emissions, the combustion and non-combustion CAP emissions, based on NEI data from Sun et al (2019), reported lower values compared to GREET 2018.

332.81 KB