Abstract:
The present invention refers to a Low Temperature Conversion apparatus composed of tri-tubes which simultaneously carries out the functions of vessel and heat exchanger. This apparatus is capable of thermally decomposing any kind of organic material to obtain coal, oil, water and non-condensable gases, and also decontaminating soils and residues contaminated with organochlorides and dioxins. The apparatus is used for thermal decomposition of any kind of organic material and comprises: an outer box (2) with a hermetic lid (19); a thermal insulation layer (5) disposed throughout the inner surface of the outer box (2) and lid, said apparatus also comprising at least a structure with three concentric tubes disposed internally, positioned substantially vertically and with a wall width suitable for heating by means of gases from an inner side and outer side of said structure. The invention also refers to a process for thermal decomposition of any kind of organic material using the apparatus of the present invention and comprises the steps of feeding the organic material into the apparatus; heating with gases on the inside and outside of an annular region located in the concentric tubes inside the apparatus; processing with extraction and condensation of oil; cooling with gases; and tilting of the apparatus.
Abstract:
The present invention refers to a Low Temperature Conversion apparatus composed of tri-tubes which simultaneously carries out the functions of vessel and heat exchanger. This apparatus is capable of thermally decomposing any kind of organic material to obtain coal, oil, water and non-condensable gases, and also decontaminating soils and residues contaminated with organochlorides and dioxins. The apparatus is used for thermal decomposition of any kind of organic material and comprises: an outer box (2) with a hermetic lid (19); a thermal insulation layer (5) disposed throughout the inner surface of the outer box (2) and lid, said apparatus also comprising at least a structure with three concentric tubes disposed internally, positioned substantially vertically and with a wall width suitable for heating by means of gases from an inner side and outer side of said structure. The invention also refers to a process for thermal decomposition of any kind of organic material using the apparatus of the present invention and comprises the steps of feeding the organic material into the apparatus; heating with gases on the inside and outside of an annular region located in the concentric tubes inside the apparatus; processing with extraction and condensation of oil; cooling with gases; and tilting of the apparatus.
Abstract:
The present invention relates to the average composition of urban waste, composed of plastics, paper, metal, glass, organic material of Municipal Solid Waste (OMMSW), ashes, batteries and humidity contents. OMMSW has been subjected to acidic prehydrolysis (2.5 % of H2SO4 on the dry matter), a prehydrolysate of 12 % of sugars and cellulignin with 12 % of ashes being obtained. Since the OMMSW contains only 30 % of dry matter, one has concluded that the economicity of the process defined as weight of solid matter by cubic meter of reactor improves with the mixture of 50 % of OMMSW and 50 % of biomass (wood, grass, agricultural residues, etc.). With this technique one has achieved 300kg of dry biomass/m3 (DB) of reactor. This requirement is not limiting, since the biomass may be supplied by planting trees in the urban perimeter or planting 1ha of grass for each 1000 inhabitants in the cities surroundings.
Abstract:
This invention refers to an apparatus for the processing of pre-hydrolysis of biomass, particularly a reactor of the failsafe type, either mobile or not, which may be manufactured of microbonded carbon steel and coated with special materials (refractory metals, superalloys, stainless materials, plastics, etc.). The insertion of vacuum between the shell of the reactor and its coating prevents its implosion and permits the detection of leakage with helium gas. The resistance to corrosion of the refractory metals enables carrying out of pre-hydrolysis and mineral digestion. In the process of this invention, biomass is compacted at 300 kg/m by a helical feeder, degased, flooded, heated, stirred, pre-hydrolyzed, the sugar being recovered at a first washing within the reactor with values higher than 90 %. The low liquid/solid ratio = 2 enables one to achieve sugar content of 10 bricks in the pre-hydrolysate and a consumption of 6 % of the energy contained in the processed biomass. The pre-hydrolysate is constituted by solutions of xylose and others and is intended for the production of furfural, alcohol and xylitol. The control of the process enables one to produce cellulignin with a high specific surface, 2 m /g (measured by BET), compared with the value of 0.4 m /g of non-hydrolyzed biomass, maintain crystallinity of the cellulose fibers, aiming at grinding it into fine particles (f