Balance Hydrogen consumption

摘要

Many refinery processes compete for hydrogen (H_2) to upgrade low-value residuals to higher-value distillates and transportation fuels. Treating hydrocarbons (HC) and removing nonHC elements (sulfur, nitrogen, etc.) requires H_2.Also, there is a continuous trend to reduce components containing low H_2 in transporation fuels. Hydrogen is rapidly becoming a scarece resource. With the unpopularity of carbon dioxide (CO_2) emissions, it can even be said that HC value is concentrated in H_2 atoms and that carbon (C) atoms are just carriers with zero or even negative value.