Feedstock and Carbon Emissions

A typical naphtha cracking operation will use approximately 3.3 tonne naphtha per tonne of ethylene. Using this as a basis, the world demand for petrochemical naphtha is almost 200 million tonnes per year or almost 5 million barrels of naphtha per day. The ethane required is typically 1.3 toimes of ethane per tonne of ethylene. This translates into 41 million toimes of ethane per year. Most of this is derived from natural gas which (on a weight basis) contains about 10% ethane, hence some 400 million tonnes of natural gas is required to be processed to provide the world s petrochemical ethane or about 63 bcf/d of raw natural gas. 

Ethylene cracking operations produce carbon dioxide emissions from fuel oil consumed in furnace operations and losses as a consequence of operational issues (flaring). Using the above data, the 

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