Abstract:
Method and system for the production of solids from raw materials. These materials are subjected to a continuous torrefaction treatment at a temperature of between 200 and 320°C. Heating takes place by means of circulating gases that entor into direct heat exchange with the raw materials fed to the torrefaction chamber. The ga.es liberated during torrefaction are combusted while feeding in oxygen and discharged after the beat has been extracted from the flue gas thus produced. The heat from the flue gas is used to heat the gaseous medium that is fed to the torrefaction chamber. The production of effluent is prevented in that the condensate formed in the process is combusteal, optionally after specific purification steps.
Abstract:
New product consisting of wood which is torrefied between 250 and 280 C in a non oxidizing atmosphere, in the form of sticks of uniform length: 15mm for example and having a diameter comprised between 5 and 20mm, which are not disbarked. The preparation of the method comprised the obtention by culture of rectilinear ligneous rejections, the cutting, drying and torrefaction thereof preferably in a vertical reactor (101) where the material to be torrefied (115) is traversed by a gas stream circulating at high speed.
Abstract:
The present invention concerns an improved process for the wet torrefaction (Torwash) of biomass, wherein the liquid phase comprises palm oil mill effluent (POME) which is typically considered a waste stream. The process according the invention comprises: (a) heating a mixture of the biomass and palm oil mill effluent (POME) at a temperature in the range of 100 - 400 °C, to obtain torrefied biomass and a liquor; and (b) washing the torrefied biomass with water, to obtain a washed material and an effluent. The inventors found that by applying a washing step after the wet torrefaction, the results are equally good as when fresh water would be used in combination with a conventional pre-washing step.
Abstract:
A conventional agricultural "cuber" machine was modified to transform fibrous, low density cellulosic biomass into a mechanically stable form suitable for use as a feed stock to a bulk flow torrefier process without requiring the addition of a "binder" or other such adjuvant. Certain disclosed embodiments of the product concern a compact "cube" or "thin puck" of raw cellulosic biomass having a density of from 4 to 15 times the bulk density of the shredded raw biomass or from 20 to 32 Ib/cu ft. The moisture content is below 10%, typically 3-8%. The strength of the product as measured by dropping the product onto a hard surface from a height of 3 ft. will not produce more than 10% breakage. The products of the present invention can be produced having any desirable dimensions, such as substantially square-, rectangular- or parallelogram-shaped product.
Abstract:
The present invention relates to an apparatus for charring of organic material. The apparatus comprises reactors that are connected in series by using conveyors, in such a way that feeding of the material to be processed into each reactor and transportation of it from each reactor to the subsequent reactor is arranged in a gas-tight manner. Sequential condensing units are connected to each reactor in order to process the gases which are generated in the reactor.
Abstract:
There is described a method of producing (-)-levoglucosenone, said method comprising, heating lignin to a temperature in excess of 150°C for a time sufficient to convert a proportion of the lignin to (-)-evoglucosenone.
Abstract:
A liquid fuel derived from processed biomass having extremely low water content and suitable for use in diesel engines or as an additive to petroleum based fuels, or which can be used as a petroleum or coal slurry substitute in those uses where a lower cost fuel have reduced emission is desired, is described.
Abstract:
The present invention refers to a method for thermal treatment of moist organic material, especially organic material containing biomass, wherein the moist organic material is introduced into a drying chamber in which a drying gas is circulated between the organic material and a heat exchanger to transfer heat to the organic material, and wherein vapor formed during drying of the organic material is brought into contact with an absorbent to recover heat to maintain the drying process by reheating the circulating gas, wherein after drying in the drying chamber the organic material is brought into a roasting chamber in which gas (steam) originally from the drying chamber is heated and forced through the material so that the temperature of the organic material is increased to about 250 °C, whereby the organic material emits gases comprising essentially water, carbon monoxide, organic acids, methanol and ammonia.
Abstract:
The present invention concerns a suspension comprising carbonaceous material particles, an alkoxylated phenol surfactant, and an aqueous liquid phase providing a high stability to the suspensions over time. The invention also concerns a process for the production of said suspensions and methods for generating power comprising combustion of said suspensions, notably with appropriate devices.
Abstract:
A compact, transportable batch-process supertorrefaction system includes at least one supertorrefying unit, a liquid tank containing molten salt, and a wash tank including a plurality of basins containing water having different temperatures and different salinity. The liquid tank and the wash tank sequentially supply the molten salt and the water to a receiving space of the at least one supertorrefying unit to supertorrefy the biomass into charcoal and to rinse and cool the charcoal, respectively. The plurality of basins of the wash unit sequentially supply water having different temperatures and salinity to the same receiving space to gradually rinse and cool the charcoal. The biomass is not moved in the at least one supertorrfeying unit during biomass supertorrefaction. The charcoal is not moved during charcoal cooling.