| 摘要 |
Method for obtaining biofuels using ethanol or other alcohols through the conversion of ethanol alone or in a mixture to hydrocarbons, in a catalytic process on a bed of zeolite-type aluminosilicate, most preferably in the presence of a hydrogen form of the zeolite catalyst, is characterized in that ethanol, especially from alcoholic fermentation, at a concentration of at least 10% w/w, or a mixture of ethanol and other alcohols with molecules containing preferably not more than 5 carbon atoms, prior to the catalytic conversion process is mixed with a diluting gas containing hydrocarbons or non-oxidating substances, and the conversion process is carried out in the gas phase at a temperature of 250-450°C, preferably at a temperature of 270-350°C and at a pressure up to 50 bar using at least two, preferably four, flow reactors connected in series, each reactor provided with a heat exchanger, and then at a temperature of up to 100°C, preferably 30-80°C, and at a pressure up to 20 bar, the "hearts" fraction is recovered from reaction product and the remainder, in whole or in part, is preferably recycled back to dilute the alcohol-containing raw material. The subject of the invention is also a biofuel being a gasoline fraction of synthetic hydrocarbons of boiling temperatures up to 210°C and aromatic compounds content up to 35% v/v, recovered from a product of conversion of ethanol, especially ethanol from alcoholic fermentation or a mixture of ethanol with other alcohols, carried out in presence of hydrocarbons or other non-oxidating substances, whereas the content of sulfur and metals including lead is at 0 level, and benzene occurs at an amount lower than 0.2% v/v and oxygen at an amount of less than 0.17% v/v. |
