Abstract:
The invention relates to a method and apparatus for producing a pyrolysis product, in which raw material are fed to the pyrolysis reactor and gaseous pyrolysis product fractions and by-product fractions are formed from raw material by pyrolysis in a pyrolysis reactor. According to the invention the method comprising steps: combusting at least one by-product fraction from the pyrolysis reactor in at least two combustors, and recovering energy formed in the combustor.
Abstract:
A method and system for cost effectively converting a feedstock using thermal plasma, or other styles of gassifiers, into a feedwater energy transfer system. The feedstock can be any organic material, or fossil fuel. The energy transferred in the feedwater is converted into steam which is then injected into the low turbine of a combined cycle power plant. Heat is extracted from gas product issued by a gassifier and delivered to a power plant via its feedwater system. The gassifier is a plasma gassifier and the gas product is syngas. In a further embodiment, prior to performing the step of extracting heat energy, there is is provided the further step of combusting the syngas in an afterburner. An air flow, and/or EGR flow is provided to the afterburner at a rate that is varied in response to an operating characteristic of the afterburner. The air flow to the afterburner is heated.
Abstract:
An wood-gas power supply system include: a rectifier filter electrically coupled to a output power terminal of the wood-gas stove; a maximum power tracking circuit electrically coupled to the rectifier filter, providing a larger power; a feedback controller electrically coupled to the rectifier filter and the maximum power tracking circuit, allowing the power reach a request power value; and a DC/DC charging device receiving a current flowing the maximum power tracking circuit and converting the current to a direct current. The wood-gas power supply system applies energy storage elements and peripheral circuits to perform the closed loop control so as to adjust the output power for transmitting the steady output voltage, and to achieve the purpose of providing the steady power.
Abstract:
A process and system for the treatment of solid waste based on gradient composed of two distinct thermal sources, notably of a sequenced technological assembly, is able to process solid waste of any class, which operates through a reactor (1) having two chambers (2 and 3), each having a thermal source (4 and 5), where a thermal gradient is generated, followed by a heat exchanger (6) where gases are abruptly cooled and taken to a neutralizing tank (7), for then being directed to an activated charcoal filter (8), due to the action of a blower (9), before finally entering a burner (10) that works under electrical discharges, passing through a catalytic converter (11) and chimney (12) where it is extravasated into the completely inert atmosphere.
Abstract:
The invention is a bioenergy and/or waste-to-energy process. The invention is a process using controlled pyrolysis reactions to convert biomass and carbon based waste material into carbon byproducts, biofuels and useable energy in the form of heat and/or electricity. The process includes one or more pyrolysis reaction chambers and a thermal oxidizer. Hot, oxygen-free exhaust gases from the thermal oxidizer are modulated through the pyrolysis reaction chambers to sustain the pyrolysis reaction. The exhaust gases along with the pyrolysis gases are drawn from the pyrolysis reaction chambers and routed to the thermal oxidizer. Combustion air is modulated into the thermal oxidizer through one or more ports to control combustion of the pyrolysis gases. After combustion, exhaust gases are recirculated to the pyrolysis reaction chambers to sustain the cycle.The invention proposes a process which is unique in four ways. Firstly, the process may convert any carboneous material, such as biocrops, animal waste, used tires, into bioproducts and biofuels.Secondly, the carbonization process is accomplished with no oxygen or combustion in the carbonization chambers.Thirdly, the modular arrangement of the process components allows easy adaptability to diverse process requirements.Fourthly, the mobility of the process material containers allows easy loading, transport, and unloading of the process material; and greatly reduces material handling requirements.
Abstract:
Systems and methods of integrating plasma waste processing are described. An integreted energy generation system provided with a fossil fuel power plant system having a combustion chamber and a plasma waste processing system having an output. The integrated energy generation system also including an integrator for combining the output of thermal energy from the plasma waste processing system with the combustion chamber of the fossil fuel power plant.
Abstract:
A process is described for obtaining energy from waste, comprising the following phases: a) bio-drying of municipal solid waste (MSW) to transform it into refuse-derived fuel (RDF), a dry, homogeneous material with piece size of around 20-30 cm, known by the name of RDF; h) compacting of the material obtained from phase a) into bales or BIOCUBr and storage of the BIOCUBI® in bioreactors; c) activation by wetting with water of the bioreactors to produce biogas by anaerobic digestion; d) combustion at the start of the material obtained from phase a) (RDF) and subsequently of the residue already digested in the bioreactors, and therefore not biodegradable, in a waste combustor provided with a system of purification of combustion gasses and production of superheated steam at approximately 400° C. and pressure of around 70 bar; e) combustion of the purified biogas in a conventional boiler provided with re-superheaters for raising the temperature of the steam produced by the waste combustor by approximately 100° C.; f) use of the steam produced in this way in a turbine coupled with an alternator for the production of electrical energy. The invention also relates to a system for the implementation of this method.
Abstract:
A method controls mass and heat loading of sludge feed into a fluidized bed combustor (FBC) controlled via regulation of a polymer dosage or a sludge feed rate including: continuously monitoring at least one performance characteristic of the FBC; producing an input signal characteristic; analyzing the input signal and determining a first rate of change of the characteristic; generating an output signal based on the first rate of change to control addition of polymer to the FBC; generating a second output signal to control addition of sludge feed to the FBC; and determining a transition point between the addition of polymer and addition of sludge, which transition point is an upper limit of a first rate change to maintain flow so that the value of the characteristic is maintained proximate at the upper limit.
Abstract:
Plasma-Based Waste-to-Energy (PBWTE) facility/systems, including plasma-assisted gasification systems, are described that can be integrated into a single system which when fed a steam of municipal solid waste, discarded tires, or electronic wastes, organic or inorganic, which have been shredded to a uniform size produces a synthesis gas (syngas) and a molten slag, and/or electricity.
Abstract:
A method of incinerating sludge in a combustor is disclosed including establishing at least one target performance characteristic of the combustor; introducing the sludge into the combustor as primary fuel; monitoring at least one performance parameter of the combustor; calculating an actual performance characteristic based on the performance parameter; and adjusting the quantity and/or quality of fuel introduced into the combustor in response to a monitored performance characteristic to substantially maintain the target performance characteristic. The apparatus for incinerating sludge includes a combustor adapted to receive sludge as fuel and incinerate the sludge; a sensor that monitors at least one performance parameter of the combustor; and a controller connected to the combustor and the sensor that 1) establishes at least one target performance characteristic of the combustor, 2) calculates an actual performance characteristic based on the performance parameter and 3) adjusts quantity and/or quality of fuel introduced into the combustor in response to a monitored performance characteristic to substantially maintain the target performance characteristic.