10.12.2008

PROCESS CHEMISTRY GTL

As You know GTL is Gas To Liquids a refinery process to convert natural gas or other gaseous hydrocarbons into longer-chain hydrocarbons. How abouth the process..? Let we know...


The First step in natural gas processing :

STEAM REFORMING
CH4 + H2O ---> CO + 3 H2
Produces a mixture of carbon monoxide ( CO ) and hydrogen ( H2 )

The Second step :

FISCHER-TROPSCH PROCESS
(2n+1)H2 + nCO ---> H-(CH2)n-H + nH2O
Produces n-paraffin hydrocarbons and water.Using a catalyst like ENERGY INTERNATIONAL'S cobalt on alumina catalyst gives a very high proportion of straiht chain saturated hydrocarbons which contain no sulfur,nitrogen,or metals.

@ The catalyst and the reaction conditions determine the upper limit for n, the number of carbon atoms in the hydrocarbon molecules produced.

@ The"carbon number" of hydrocarbons produced by the Fischer-Tropsch reaction always has a wide range."n"ranges from 1 to an upper limit of 50,70,or even 100.

@ Thus,the following products are produced :
LPG, NAPTHA, DIESEL AND HEAVY GAS OIL/WAX

SOURCE :www.osti.gov



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