Biofuel based on legumes and wood

Abstract

The present invention consists of using alfalfa stems dried in the sun and in the open air, then crushed in order to be put into contact with shredded wood or sawdust in a preformed manner, with the aim of having a biofuel of purely organic origin.

Description

Title of the invention: Biofuel based on legumes and wood

[0001] It involves manufacturing a fuel from a product whose source is sustainable, and which helps protect fossil fuels.

[0002] The advantage is that this type of fuel is simple to manufacture with very little energy to implement it and vital for the environment.

[0003] The main component is the legume called alfalfa or Afalfa.

[0004] In terms of industrial exploitation, the harvest possibilities can be 3 to 4 cuts per year and on millions of hectares.

[0005] Alfalfa is currently the flagship of farmers wishing to move from traditional production to organic to regenerate soils and reduce inputs.

[0006] Its agronomic properties are unrivaled from an agrological, economic, energetic and societal perspective.

[0007] The second component is wood, already known for its use in the manufacture of fuel pellets, but whose massive exploitation now presents deficiencies in planetary balance.

[0008] After grinding, the two components do not undergo any chemical transformation but only physical. A simple contact of the two components through homogeneous mixing is implemented.

[0009] The ratios of the 2 components are made in such a way that alfalfa is largely dominant to preserve the exploitation of wood.

[0010] This type of biofuel is composed solely of organic matter.

[0011] Overall process:

[0012] Alfalfa is an agricultural product whose green stems and leaves are used for animal feed.

[0013] The maturity of the plant used for our biofuel product must be close to three months of growth for overall profitability.

[0014] The plant does not undergo any chemical transformation.

[0015] The stem reaches no less than 1 meter to 1 meter 50 in height with a diameter of 3 to 5 mm.

[0016] Thus, the component of the stem, all varieties combined, is similar to that of a tree thanks to the strong presence of lignin and cellulose.

[0017] The difference between perennial and annual varieties is essentially the possible quantity of harvest. Some varieties are more productive than others. The one that best corresponds to the region being cultivated, called north or south, and to the type of soil, should be chosen.

[0018] The exploitation is carried out according to agricultural type processes.

[0019] After cutting the alfalfa with a mowing tool, it dries naturally on the ground without any other human intervention thanks to the sun's rays, the air and

[0020] separation of the stems with its leaves at ground level by cutting and therefore separated from its roots.

[0021] From 3 or 4 days depending on the humidity of the air and the influence of the sun the stems and leaves are dry.

[0022] Only the alfalfa stem dried in the sun and the open air is used for the manufacture of fuel.

[0023] To do this, you have to pass a machine which has the purpose of separating the leaves from their

[0024] stems.

[0025] A twirl is a tool of agricultural origin that stirs the plant and makes the leaves fall.

[0026] Then a windrower, an agricultural tool, gathers the stems into a windrow facilitating harvesting.

[0027] The stems, which have become dry and hard like a small piece of wood, are collected using a machine called a "silage harvester" which has the capacity to crush the alfalfa stems into small pieces at harvest.

[0028] The shredded material is stored in bins and then directed onto the air for mixing the shredded alfalfa stems with the shredded wood, to a shredded material size equivalent to that of the alfalfa, with or without sawdust.

[0029] The contact is distributed evenly. It varies from 25% to 70% of crushed alfalfa stems and the remainder is crushed wood of various species or not or in the form of sawdust of all species, diversified or not.

[0030] The two components, brought together and distributed homogeneously and proportionally, can be sprayed onto the conveyor belt attached to the pellet press chute using a complementary product based on grape seed oil mixed with beet alcohol and beeswax under pressure using a jet creating a mist.

[0031] The 2 components are directed towards a pellet press, the matrix of which can be of different sections depending on the size of the boiler, or any other heating point sought by individuals, agriculture, crafts, commerce, industry, collective buildings, the army, communities.

[0032] The pellet obtained can have various shapes and different sizes depending on the press used.

[0033] The pellet is therefore composed of alfalfa stems dried in the sun and in the open air, crushed and placed in homogeneous contact with wood chips or sawdust. of wood which are compressed and formed under force to maintain the homogeneity, shape, density and content of the pellet through a die and sectioned at the die outlet to the desired size.

[0034] The pellet thus retains its optimal calorific value, characterized by incandescence and its extended duration.

[0035] Thus a boiler powered by our fuel generates energy by complete combustion with multiple functions: direct heating, creation of steam to turn a turbine to produce electricity or an axle driving a means of propulsion or transport of fluid.

Claims

Claims

1. Pellets for biofuel characterized in that only the alfalfa stem dried naturally after mowing on the ground by the sun and the open air is used.

2. Pellets according to claim 1 for biofuel characterized in that only the alfalfa stem dried naturally in the sun and air after mowing is crushed and combined with crushed wood or sawdust.

3. Pellets according to claim 2 for biofuel characterized in that only material of organic origin is in the composition of this biofuel.

4. Pellets according to claim 2 for biofuel characterized in that the mixing and bringing together of the alfalfa and wood stems is misted with a base of grape seed oil mixed with beet alcohol and beeswax.

5. Process for manufacturing pellets according to claim 2 for biofuel characterized in that the mixing and bringing together of the alfalfa and wood stems is misted with a base of grape seed oil mixed with beet alcohol and beeswax.

6. Process for manufacturing pellets according to claim 1 for biofuel, characterized in that the alfalfa stems do not undergo any chemical transformation after mowing and remain exploited naturally dried in the sun and dry-ground.

7. Process for manufacturing pellets according to claim 2 for biofuel characterized in that the alfalfa stem dried naturally in the sun and in the open air and placed in contact with wood chips or sawdust are compressed in a matrix by force to maintain homogeneity, shape, density allowing prolonged incandescence.

8. Process for manufacturing pellets according to claim 1 for biofuel characterized in that only the aerial part and more precisely the stem of the plant called alfalfa is used.