A kind of conversion process of lower carbon number hydrocarbons

The present invention relates to a kind of conversion process of lower carbon number hydrocarbons, with C4/C5/C6 alkane tops as main component, coking light naphthar, oil field light hydrocarbon, pentane oil etc. and mixture manufacturings butadiene, pentadiene and the method rich in high-octane rating ether compound gasoline component such as the catalytically cracked C four rich in alkene, cracking c_4.Using the logistics rich in four light dydrocarbon carbon of carbon, six alkane and rich in the logistics of alkene, by catalytic dehydrogenation and oxidative dehydrogenation, the hydrocarbon stream after butadiene and pentadiene will be isolated, into methyltertiarvbutyl ether reactor, produce high octane gasoline component, utilization rate and added value rich in four light dydrocarbon carbon of carbon, six alkane stream further are improved, while also providing one rich in olefin feedstock for mixing carbon four, catalytic light gasoline etc. and utilizing method.