9 results about "Torrefaction" patented technology

A novel biomass baking coupled with denitrification agent pyrolysis reactor and system includes a housing with a heating chamber on its inner wall, the heating chamber being connected to a medium inlet and a medium outlet. A dual-shaft stirring system is installed inside the housing, comprising two hollow stirring drums rotatably connected to the inner wall of the housing. Each hollow stirring drum has spiral blades on its exterior, and a heating device is installed inside both hollow stirring drums. This invention, by combining biomass baking and ammonium carbamate pyrolysis, generates diluted ammonia gas. This diluted ammonia gas diffuses and mixes better in the boiler than pure NH3, reducing the amount of ammonia gas used for denitrification and preventing ammonia escape. Furthermore, the biomass baking process generates gases such as H2O, H2, CO, CO2, and CH4, which are injected into the boiler along with the ammonia gas, lowering the local temperature and creating a fuel-rich, oxygen-depleted environment, thus reducing NOx production.

Embodiments of the present invention provide a device for torrefaction of a raw material, such as a biomass. The device includes a rotating cylinder with a number of baffles and stiffener to rotate and stir the raw material, performing torrefaction in partially oxidative atmosphere. The torrefaction process takes part inside the long multiple reactors of a rotary drum, that the timing of the material to be fed is not particularly dependent on the timing or instances of outputting of torrefied material, because some of the reactors maytorrefy the material (e.g., 6 out of 8), while some of the last reactors may cool down the torrefied material (e.g., 2 out of 8), ensuring continuous process.

Flexible Device and Method for the Valorization of Biomass and Waste by Roasting and Hydrothermal Carbonization. The invention relates to a flexible system and method for the thermoconversion of biomass by roasting or hydrothermal carbonization of all types of biomass, depending on the biomass moisture content. The present invention relates to the technical field of the thermoconversion of biomass and waste to produce energy and / or materials. The invention will find particular application for the valorization of sewage sludge, manure, and driftwood waste, the moisture content of which can vary considerably. Figure for the abstract: Fig. 1

The torrefaction unit 1 comprises at least one multiple hearth furnace 2 which is heated by a heat transfer fluid 16 comprising hot water taken from a water space 21 of a steam drum 11. The heat transfer fluid 16 is guided through a water circuit 20 to a heating system 19 of the at least one multiple hearth furnace 2. This means the multiple hearth furnace 2 is heated to a torrefaction temperature indirectly by the use of hot water as heat transfer fluid 16. This is environmentally advantageous. The torrefaction gas 3 created by the torrefaction of material comprising biomass such as municipal solid waste is preferably partially oxidized in a partial oxidation reactor 23 for creating syngas. Preferably, a part of the thermal energy of the syngas is used in an evaporator 9 and / or a superheater 13 to heat water and / or steam and / or to evaporate water. The evaporated water is preferably guided to a steam space 22 of the steam drum 11 and can, thus, be used to heat the heat transfer fluid 16. The partial oxidation reactor 23 and the temperature of the heat transfer fluid 16 can be controlled independently allowing to one single partial oxidation reactor 23 for at least two multiple hearth furnaces 2.

Device for processing non-torrefied fibrous carbonaceous feedstocks into a burner feed for a zip-flow gasifier, comprising a mechanical grinding and classifying device, wherein the grinding and classifying device is upstream of a pressure inlet and burner feed device of the zip-flow gasifier and is configured to mechanically grind and classify the feedstocks without prior torrefaction, wherein the grinding and classifying device has a classifying or separating device for limiting, separating, removing or recirculating oversized, long-fibered, splinter-shaped, needle-shaped, foil-like or agglomerated components, so that a burner feed with a limited coarse fraction and a limited proportion of elongated or fibrous contaminants can be provided, and wherein the burner feed can be fed to the pressure inlet and burner feed device and is suitable for pressure inlet,Suitable for conveying with high solids loading and burner input into the pressurized entrained flow carburetor.

The present application relates to the field of functional materials, energy conversion and environmental protection technology, and more particularly to a biomass baking-gasification chemical chain water circulation hydrogen production method, which is used for biomass resource cascade utilization and hydrogen-rich syngas production. In the baking stage, the catalyst is mixed with biomass to absorb the moisture therein and release and utilize the moisture in the gasification process. The present application provides a new type of metal-support catalyst, the metal active phase of which mainly includes Ce-Mn, Ce-Zr, Mn-Zr and other bimetallic and multimetallic materials, and the support is CaO. The catalyst includes a CaO support and active metal particles dispersed on the support, the active metal particles are dispersed on the surface of the CaO support by embedding, the doping of the metal is conducive to the formation of oxygen vacancies, increases the electron cloud density, reduces the valence electron energy level, and makes the catalyst have excellent hydrogen production performance and stability in the cyclic adsorption of H2O and CO2. The abundant oxygen vacancies provide active sites for the adsorption and dissociation of H2O in biomass, and promote the hydrogen production from biomass gasification.

The invention relates to the technical field of biomass solid fuel analysis and detection, in particular to a biomass baking material industrial component and slagging risk detection method and device.The method comprises the steps that a detection requirement corresponding to a target biomass baking material sample is determined so as to determine a preset working mode of a sample injection unit, preparing a detection area of the target biomass baking material sample in the working mode; carrying out laser striking operation on the detection area to collect corresponding LIBS spectral data, and carrying out data processing on the LIBS spectral data to obtain corresponding sample index data; and based on the sample index data, generating a detection report corresponding to the target biomass baking material sample, and sending the detection report to the target client. According to the method, tabletting and sample preparation are not needed, off-line rapid sampling inspection and on-line real-time detection can be achieved, the detection result can be directly associated with components and risks concerned industrially, and the method has important industrial application value.

The present invention relates to a method for use in a biogas plant having at least one digester (12) and a thermal treatment unit (50), the method comprising the steps of : a ) anaerobically digesting an organic biomass (18) in at least one digester (12) through microorganisms at a temperature below 50 ° C to produce methane-containing biogas (16) and a digestate (14); b) removing a major fraction (32) of the digestate (14) from the digestion process after a fast retention time t and subjecting at least part of said major digestate fraction (32) to a thermal treatment in a thermal treatment unit (50) at a temperature above 175 ° C for at least one minute, wherein the thermal treatment step involves at least one treatment selected from the group consisting of pyrolysis, torrefaction, gasification, hydrothermal gasification, hydrothermal carbonization and hydrothermal liquefaction; and c ) retrieving a minor fraction (34) of the digestate (14) from the digestion process after an inoculum retention time T that is longer than the fast retention time t, returning said minor digestate fraction (34) into the digestion process and mixing the minor digestate fraction with the organic biomass (18) within the digester (12).

This technology provides a new way to enable continuous operation of the semi-carbonization process. [Solution] The biochar production apparatus 10 comprises a heat transfer medium heater 14 for heating the heat transfer medium Hm, a heat storage unit for keeping the heated heat transfer medium Hm warm and storing it, and a torrefaction unit for semi-carbonizing the biofuel Bf using the heat from the heat transfer medium supplied from the heat storage unit.