A Brief Note On The Gas Mixture Of Hydrogen And Carbon Monoxide

1323 Words Jun 8th, 2015 6 Pages
1.2.3 Gasification and Syngas
Syngas is a gas mixture of hydrogen and carbon monoxide, which are products from gasfireing any hydrocarbon material such as coal at a high pressure and temperature, 30 bar and 1500 °K. The present of the oxygen is the primary difference between gasification and combustion. When a feed gasfire, the oxygen or air is injected in small amount allowing part of the feed to burn completely which supply the required heat and pressure, then, the heat will break down the feed into synthesis gas (Higman & Burgt, 2003). This process consists of six main reactions:
Table 1: Gasification main reactions
Reaction Process Chemical Formula Change in Enthalpy
Gasification with Oxygen C + ½ O2 → CO –3,922 Btu/lb C
Combustion with Oxygen C + O2 → CO2 –14,111 Btu/lb C
Gasification with Carbon Dioxide C + CO2 → 2 CO 6,267 Btu/lb C
Gasification with Steam C + H2O → CO + H2 4,750 Btu/lb C
Gasification with Hydrogen C + 2 H2 → CH4 –2,672 Btu/lb C
Water Gas Shift CO + H2O → CO2 + H2 –650 Btu/lb CO

There are four basic configurations for the gasification. These configurations describe the way oxygen introduced to hydrocarbon feed since it will produce different characteristics for each one of them (Breault, 2015). The following is an explanation for each configuration:
Table 2: The four basics configurations for the gasification
Bed Type Hydro Dynamically
Moving Bed Gas flow through a porous medium where the solids move down while gas moves up - a counter current…

More about A Brief Note On The Gas Mixture Of Hydrogen And Carbon Monoxide

Open Document