Abstract:
A process and a unit for fluidized bed torrefaction and grinding of particles of a biomass with a largest dimension of 2 cm to 5 cm, and which unit contains an envelope having a general shape of a sector having a) two substantially vertical walls delimiting that sector; and b) at least one inclined wall defining three zones, from bottom to top: a lower zone provided with a fluidization means, and provided with a grinder placed at the bottom of that zone; an intermediate zone (2) provided with a fluidization means; and an upper zone (3) provided with a fluidization means; and a pipe (11) for introducing the particles reaching into the unit to the level of the intermediate zone.
Abstract:
This invention relates to a process for heat treatment of a solid, with a coolant solid, in which a stage for mixing the solid with the pre-heated coolant solid is carried out, with the coolant solid being a solid hydrocarbon. The solid hydrocarbon is ground, before the mixing stage with the solid, to obtain a solid hydrocarbon powder with a grain size of between 20 μm and 300 μm. The solid is ground, before the mixing stage with the coolant solid, to obtain solid pellets with a thickness of between 1 mm and 30 mm, a width of between 1 mm and 40 mm, and a length of between 1 mm and 100 mm. The mixing is carried out at a temperature of between 80° C. and 700° C.
Abstract:
The process that is the object of the invention describes a process whose purpose is to produce a purified synthesis gas from lignocellulosic biomass that includes a pyrolysis stage, a purification stage placed upstream from the partial oxidation stage, and a cooling stage.
Abstract:
A process for heat treatment of a solid, with a coolant solid, in which a stage for mixing the solid with the pre-heated coolant solid is carried out, with the coolant solid being a solid hydrocarbon. The solid hydrocarbon is ground, before the mixing stage with the solid, to obtain a solid hydrocarbon powder with a grain size of between 20 μm and 300 μm. The solid is ground, before the mixing stage with the coolant solid, to obtain solid pellets with a thickness of between 1 mm and 30 mm, a width of between 1 mm and 40 mm, and a length of between 1 mm and 100 mm. The mixing is carried out at a temperature of between 80° C. and 700° C.
Abstract:
The invention describes a process for the conversion of aqueous solutions of lignocellulosic solids comprising a solids content of between 1 and 20% of dry material, said process comprising a step a) for compression of said solution so as to separate the liquid phase present in and between the solids from the compressed solid phase and a step b) for extraction of at least the liquid phase, said liquid phase then being homogenised by heat and/or chemical treatments and reinjected on to the compressed solid phase.
Abstract:
A process for preparation of biomass mixed with a heavy hydrocarbon fraction yields a feedstock for the purpose of supplying a gasification unit. The process comprises a first mixing stage followed by a grinding stage and makes it possible to deliver a suspension of biomass particles less than 500 microns in size that are dispersed in the heavy hydrocarbon fraction.
Abstract:
The process that is the object of the invention is a process for preparation of biomass mixed with a heavy hydrocarbon fraction for the purpose of supplying a gasification unit with said feedstock. The process according to the invention comprises a first mixing stage followed by a grinding stage and makes it possible to deliver a suspension of biomass particles that are dispersed in the heavy hydrocarbon fraction that is less than 500 microns in size.
Abstract:
A rotary furnace (1) for the heat treatment of solids includes at least one rotary tube into which the solids are introduced and a first heater outside of the rotary tube that makes it possible to conduct a portion of the heat treatment in the absence of oxygen. A second heater for heating feedstock to improve heat treatment is formed by a second heating element (4, 4′, 4″) positioned above the feedstock when the furnace rotates and at least one deflector panel that surrounds the heating element (4, 4′, 4″) is provided on the side opposite to the feedstock (2) and arranged inside of the rotary tube. The rotary furnace is used to roast solid biomass.
Abstract:
A rotary furnace (1) for the heat treatment of solids includes at least one rotary tube into which the solids are introduced and a first heater outside of the rotary tube that makes it possible to conduct a portion of the heat treatment in the absence of oxygen. A second heater for heating feedstock to improve heat treatment is formed by a second heating element (4, 4′, 4″) positioned above the feedstock when the furnace rotates and at least one deflector panel that surrounds the heating element (4, 4′, 4″) is provided on the side opposite to the feedstock (2) and arranged inside of the rotary tube. The rotary furnace is used to roast solid biomass.
Abstract:
The process that is the object of the invention describes a process whose purpose is to produce a purified synthesis gas from lignocellulosic biomass that includes a pyrolysis stage, a purification stage placed upstream from the partial oxidation stage, and a cooling stage.