NOVELTY - Producing petrol from sugarcane involves: (a) submitting plant source to juice extraction, thus extracting sugars from the source into aqueous juice; (b) cloth filtration of the aqueous juice; (c) juice charging to specially designed process equipment containing membrane for concentration and specific gravity adjustment; (d) pH adjustment and fermentation in batch fermenters using yeast; (e) carbon dioxide conversion to carbon monoxide; and (f) separation of intermediate using fractional distillation and conversion using catalytic converter in nitrogen atmosphere to yield petrol.    USE - The process is useful for producing petrol from sugarcane. The process plant design is useful for conversion of sugarcane into petrol (all claimed). The petrol is useful as fuel material for various automobiles.    ADVANTAGE - The process can easily be adapted for production of petrol from any carbohydrate, starch or cellulose containing source where polymer is broken down to glucose or fructose monomer, and where any source which can be converted to carbon monoxide or ethanol is used as raw material for production of petrol using the process (claimed). The petroleum hydrocarbon mixture produced after catalytic conversion can easily be fractionated in fractionation column to produce Petrol. The fuel so produced using the process has good or excellent fuel applications in current automobiles and is equally competitive to present Petrol available in market which is produced from crude oil.    DETAILED DESCRIPTION - Producing petrol from sugarcane involves: (a) submitting plant source to juice extraction, thus extracting sugars from the source into aqueous juice; (b) cloth filtration of the aqueous juice; (c) juice charging to specially designed process equipment containing membrane for concentration and specific gravity adjustment; (d) pH adjustment and fermentation in batch fermenters using yeast to synthesize intermediate and carbon dioxide; (e) carbon dioxide conversion to carbon monoxide by passing through hot carbon bed and synthesis of intermediate using catalytic conversion; (f) separation of intermediate using fractional distillation and conversion using catalytic converter in nitrogen atmosphere to yield petrol; (g) conversion of sugarcane bagasse produced after extraction of sugar into carbon monoxide and then to petroleum hydrocarbon via intermediate route; (h) conversion of methane produced using effluent generated after separation of intermediate into carbon monoxide and then to intermediate product; and (i) separation of petroleum hydrocarbon into petrol and liquefied petroleum gas (LPG) by using fractional distillation. An INDEPENDENT CLAIM is included for is process plant design for conversion of sugarcane into petrol comprising: (a) sugarcane chopping and crushing section; (b) advanced membrane separation unit having novel design; (c) juice fermentation and carbon dioxide separation section; (d) fractional distillation section for separation of intermediate and intermediate superheating arrangement in nitrogen atmosphere; (e) catalytic converter with excellent cooling or heating arrangement; (f) converter for conversion of carbon dioxide to carbon monoxide; (g) catalytic converter for conversion of methane to carbon monoxide and carbon monoxide to ethanol; (h) fractional distillation section for separation of petroleum hydrocarbon fraction into various components; and (i) specially designed pyrolyzer for conversion of sugarcane bagasse into carbon monoxide and carbon monoxide (CO) separator.