Mixture for supplying a boiler or a diesel engine, comprising diesel fuel or heating oil and esters and alkanes from the transformation of biomass

Abstract

The goal of the invention is a mixture of liquid fuels for boilers or diesel engines with particular chain length esters and alkanes, and use thereof for reducing particle and nitrogen oxide emissions during operation of the boilers or diesel engines.

1 . A mixture intended to supply a boiler or diesel engine comprising:
 at least one liquid fuel for boiler or a diesel engine fuel chosen among diesel fuel or domestic fuel oil; and   at least one biosourced ester where the chain length is included between 8 and 14 carbon atoms incorporated in the fuel; and   at least one biosourced alkane where the chain length is included between 8 and 14 carbon atoms, incorporated in the fuel; and   wherein the incorporated ester(s) with a chain length included between 8 and 14 carbon atoms represent between 1% and 80% by volume of said mixture and where the incorporated alkane(s) with a chain length included between 8 and 14 carbon atoms represent between 1% and 80% by volume of said mixture.   
     
     
         2 . The mixture according to  claim 1  characterized in that the ester(s) with chain length included between 8 and 14 carbon atoms represent between 5% and 50% of the volume of said mixture. 
     
     
         3 . The mixture according to  claim 1 , characterized in that the incorporated alkane(s) with a chain length included between 8 and 14 carbon atoms represent between 5 and 50% by volume of said mixture. 
     
     
         4 . The mixture according to  claim 1 , characterized in that the incorporated alkane(s) with chain length included between 8 and 14 carbon atoms in the mixture are alkanes obtained by Kolbe electrolysis of volatile fatty acids coming from anaerobic fermentation of biomass or alkanes coming from the biomass by gasification and Fischer-Tropsch synthesis. 
     
     
         5 . The mixture according to  claim 1 , characterized in that ester(s) with chain length included between 8 and 14 carbon atoms in the mixture are esters in which the acid part is obtained from volatile fatty acids coming from anaerobic biomass fermentation and esterification by an alcohol. 
     
     
         6 . The mixture according to  claim 1 , characterized in that it comprises at least one additional additive that can improve the cetane number and/or reduce of particle emissions and/or reduce nitrogen oxide emissions by the boiler or diesel engine during operation. 
     
     
         7 . The mixture according to  claim 1 , characterized in that it comprises at least one additive capable of improving the cold resistance and/or viscosity. 
     
     
         8 . A process for production of a mixture according to  claim 1 , characterized in that it consists of incorporating in at least one liquid boiler fuel or diesel engine fuel chosen among diesel fuel or domestic fuel oil:
 at least one biosourced ester where the chain length is included between 8 and 14 carbon atoms; and   at least one biosourced alkane where the chain length is included between 8 and 14 carbon atoms; and   wherein in a way that the incorporated ester(s) with a chain length included between 8 and 14 carbon atoms represent between 1% and 80% by volume of said mixture and where the incorporated alkane(s) with a chain length included between 8 and 14 carbon atoms represent between 1% and 80% by volume of said mixture.   
     
     
         9 . A use of a mixture according to  claim 1  to supply a boiler or a diesel engine. 
     
     
         10 . The use according to  claim 9  in a boiler or diesel engine for reducing the particle emissions during operation of the boiler or engine. 
     
     
         11 . The use according to  claim 9  in a boiler or diesel engine for reducing the nitrogen oxide emissions during operation of the boiler or engine. 
     
     
         12 . The use according to  claim 9  in a diesel engine for improving the cetane index of the fuel. 
     
     
         13 . The use according to  claim 9  in a boiler or diesel engine for wherein other additives are added for improving the cetane number or enhancing the reduction of particle or nitrogen oxide emissions. 
     
     
         14 . The use according to  claim 9  in a diesel engine wherein other additives are added for improving the cold resistance and/or viscosity. 
     
     
         15 . The use according to  claim 9  in a fixed diesel engine or diesel engine installed in transportation vehicles or boats or worksite heavy equipment or agricultural equipment or small domestic equipment.