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.

Description

TECHNICAL FIELD[0001]The present invention relates to a mixture of liquid fuels for boiler or diesel engine, comprising specific compounds which reduce particle and nitrogen oxide emissions from boilers and diesel engines during their operation.BACKGROUND SECTION[0002]From the perspective of fighting greenhouse gases, diesel engines are effective engines because, at equivalent power, they emit about 20% less greenhouse gases than gasoline engines. Just the same they are increasingly criticized because of certain emissions harmful to people, in particular particle and nitrogen oxide emissions. In some major urban centers, even some entire regions, air pollution from these emissions constitutes a major problem.[0003]In many countries, particle and nitrogen oxide emissions from diesel engines are regulated. This is notably the case in Europe where the limits set by regulations are increasingly strict (Euro6 standards currently). This is also the case in other major countries, in partic...

AI Technical Summary

Benefits of technology

[0012]The goal of the present invention is to address these problems and in particular to provide a simple, effective and economical solution for reduction of emissions from diesel engines and liquid fuel boilers.

[0030]While the esters are going to lower the particle emissions, it is important according to the invention to add alkanes with chain lengths included between 8 and 14 carbon atoms in addition to those which could already be present in the fuel, because an increase of the nitrogen oxide emission can be avoided that way.

[0032]The esters and / or alkanes used can in particular be biosourced, meaning be biofuels coming from agricultural or forest biomass or form organic waste, which also has an advantage for combatting the greenhouse gas effect.

Problems solved by technology

Just the same they are increasingly criticized because of certain emissions harmful to people, in particular particle and nitrogen oxide emissions.

In some major urban centers, even some entire regions, air pollution from these emissions constitutes a major problem.

The smallest are considered the most dangerous for humans.

Despite a reduction of particle emissions from new engines of order 98% over some 30 years, the problem of particles is seen as sufficiently serious that some urban centers have reached the point that they want to ban diesel vehicles in the city.

The same problems with particle and nitrogen oxide emission are encountered with liquid fuels for boilers, in particular with old boilers for which the contribution to particle and nitrogen oxides pollution is also very significant.

But the improvements that can be achieved in the area of particle reduction with such mixtures are limited (reduction of the order of half the rate of incorporation of esters).

Further, these esters tend to increase the nitrogen oxides.

However the effect on particles remains limited.

Nonetheless, none of these solutions led to a satisfactory solution with which to reduce particle emissions and nitrogen oxide emissions during operation of boilers and diesel engines.