Question

Differences between synthesis and producer gas including chemical equations

Answer 1

Synthesis gas (syngas) A gas mixture that contains varying amounts of carbon monoxide

(CO) and hydrogen (H2) generated by the gasification of a carbon-

containing material to a gaseous product with a heating value (but

less than half the energy density of natural gas). When used as a

fuel, it is produced by gasification of coal or municipal waste by the

following reactions: C + O2 → CO2; CO2 + C → 2CO; C + H2O → CO

+ H2. The name comes from the gas's use as an intermediate in

creating synthetic hetic natural gas (SNG) and in producing ammonia or methanol.

Producer gas A gas mixture containing carbon monoxide (CO), hydrogen (H2),

carbon dioxide (CO2) and nitrogen (N2). In the USA, producer gas

is a generic term referring to wood gas, town gas, synthesis gas,

syngas or raw gas. In the UK, producer gas, also known as suction

gas, means a fuel gas made from coke or other carbonaceous

material. Air is passed over the red-hot fuel and carbon monoxide

is produced in an exothermic reaction which reads 2C + O2 → 2CO.

The nitrogen in the air remains unchanged and dilutes the gas,

so it has a low calorific value. The gas may be used to power gas

turbines which are suited to fuels of low calorific value.

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