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8091491 |
Integrated system for the extraction of heavy ash, conversion thereof into light ash and reduction of unburnt matter
The present invention is about a process for treating all the ashes produced by a coal dust boiler (1), able to reduce the total unburnt matter content, to increase the combustion efficiency of the...
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7976593 |
Gasifier and gasifier system for pyrolizing organic materials
A gasifier and gasifier system based on the gasifier, which contains as a major component, a novel feed system for feeding organic materials into the burn pile of the gasifier. The gasifier feed...
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7128006 |
Process for rendering an ash inert, artificial pozzolana obtained by means of the said process
Process for rendering inert an ash originating from the incineration of municipal waste, according to which the ash is subjected successively to treatment (19) with a water-soluble phosphate (20)...
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7047894 |
Method and apparatus for combustion of residual carbon in fly ash
A system for combustion and removal of residual carbon within fly ash particles in which the fly ash particles are fed into an array of process units for combustion. The fly ash particles are...
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6994036 |
Coal-fired power station
A coal-fired power station is provided and has a boiler that is heatable by dry firing, a catalytic converter for reducing an NOx level, a flue gas channel that adjoins the boiler and leads to the...
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6945179 |
Ammonia removal from fly ash
An apparatus for the application of heat to remove ammonia compounds from fly ash is disclosed. The apparatus includes a source of fly ash comprising particulates having ammonia compounds affixed...
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6745705 |
Furnace
The invention relates to a furnace with a body (1) of a furnace, at the lower end of which a discharge device (2) for the ashes produced in the combustion chamber is provided. A continuous conveyor...
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6481360 |
Ultra fine fly ash and a system for collecting the same
A system for collecting ultra fine fly ash from a dry fly ash removal system includes providing a bagfilter transport conduit for each bagfilter of the system. A vacuum shutoff valve is positioned...
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6338306 |
Ash handling system
An apparatus and method is provided for discharging ash from a plurality of fossil-fuel boiler hoppers through actuator opened gate valves by opening only selected gate valves during a given...
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6311630 |
Method and device for removal of soda melt from a soda recovery unit
Method and device for removal of soda melt from a soda recovery boiler in conjunction with shutdown of the soda recovery boiler, in which method the supply of lye into the boiler is interrupted...
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6202573 |
Apparatus and process for carbon removal from fly ash
A new apparatus and process for the removal of carbon fly ash, whereby carbon removal occurs through oxidation. The ignition of the carbon is accomplished by bulk heating and impingement of a...
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6105517 |
Fly ash treatment
A process for treating toxic fly ash from an incinerator which comprises heating the fly ash held in suspension in a combustible or combusted gas at least to a temperature at which sintering of the...
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6067914 |
Method of operating a combustion unit of a coal-fired power plant with a slag tap furnace and combustion plant operating according to the method
A method of operating a combustion unit of a coal-fired power plant operating according to a slag tap furnace firing method, which includes supplying a titanium-containing material in addition to...
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6065409 |
Method of hot scrubbing flue gases, in particular for an incineration plant for household refuse
The method consists in causing the flue gases to pass through a filter placed inside the recovery boiler so that the fly ash contained in said flue gases can be hot filtered out. An additional flow...
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6058855 |
Low emission U-fired boiler combustion system
At least one main combustion chamber contains at least one pulverized coal burner. Each pulverized coal burner is operatively arranged for minimizing NOX production and for maintaining a...
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6038987 |
Method and apparatus for reducing the carbon content of combustion ash and related products
A method for reducing the carbon content of a combustion ash containing siliceous ash particles and carbon particles includes subjecting the combustion ash to comminution to reduce the particle...
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5992336 |
Reburning of coal ash
Bottom ash and flyash having high LOI is reburned in a pulverized coal furnace. The bottom ash is added to the coal supply before the coal is pulverized. Flyash is added to the pulverized coal...
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5976224 |
Separating carbon from ash
A method of separating unburned Carbon, as particulate matter, from the flyash produced as a result of the combustion process occurring in a pulverized-coal fired steam generating power plant is...
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5954000 |
Fluid bed ash cooler
Apparatus for cooling ash exiting from circulating fluidized bed equipment includes an enclosure having a floor, a plurality of walls disposed around the floor and a ceiling. The enclosure also has...
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5950548 |
Process for burning combustibles, in particular garbage
In the process for burning combustibles, in particular garbage and refuse, on a furnace grate, the combustion regulation on the furnace grate is carried out in such a way that the ash developing at...
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5937772 |
Reburn process
A process and apparatus for combustion in which a combustible material is introduced into a combustion chamber and oxidant is supplied to the combustion chamber. The combustible material is burned,...
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5925165 |
Process and apparatus for the 3-stage treatment of solid residues from refuse incineration plants
In a method for processing solid residues from refuse incineration plants the slag is melted and heavy metals from the melt (16) are separated for reutilization. The slag is directly transferred...
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5771822 |
Process for the disposal of residual substances from waste incineration plants as well as activated coke and/or activated carbon
The present invention describes a process for the disposal of residual substances from waste incineration plants as well as activated coke and/or activated carbon. For this purpose the residual...
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5765489 |
Process for the treatment of solid residue from refuse incineration plants, and apparatus for performing the process
A process for the treatment of solid residue from a refuse incineration plant, involving: melting the solid residue in a first heating chamber under oxidizing conditions to provide a melt; reducing...
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5605104 |
Method and device for melting down solid combustion residues
The invention relates to a method and a device for melting down solid combustion residues such as slags, ashes and fine dusts from waste combustion installations (11) with solid, liquid and/or...
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5511495 |
Method of processing a mixture of bottom ash and fly ash
Bottom ash is taken out of an incinerator after undergoing a moistening process and is subjected to a drying process to reduce its water content to less than 10 weight % or it is taken out of the...
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5511496 |
Method of recovering glass and metal from solid residues produced in refuse incineration plants
Glass and metal are recovered separately by melting from the solid residues produced in a refuse incineration plant, particularly from slag. The melting is effected in two zones. In the first, top...
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5501161 |
Process for the thermal treatment of solids which arise in the purification of flue gases
Dustlike and/or finely divided solids which arise in the purification of flue gases, in particular from refuse incineration plants, are subjected to a thermal treatment. In this case, the said...
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5481989 |
Method of collecting and conditioning a petroleum coke fluid bed combustion ash
A method of collecting and conditioning either or both of a fluid bed combustion cyclone or bed ash, from a sulfur-containing petroleum coke combustion, by transferring dry combustion ash,...
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5390611 |
Thermal processing of fly ash
Fly ash is thermally processed in electrically heated, closed pre-heat and combustion chambers. In the combustion chamber, the fly ash is tumble mixed to produce maximum combustion of carbon in the...
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5370067 |
Method of incinerating solid combustible materials, especially urban waste
Urban waste is dried and burned in a mechanical grate furnace in a reducing atmosphere to reduce the formation of NOx. Consumption of the clinker is completed in a well at the base of which a...
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RE34775 |
Lightweight aggregate from flyash and sewage sludge
A method is shown for producing a lightweight aggregate by treating flyash and sewage sludge. The flyash and sewage sludge are mixed together and then agglomerated into pellets, with or without the...
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5351630 |
Apparatus for conditioning ASTM class C fly ash
A hydrated granular fly ash composition is disclosed. The granular fly ash may be transported with minimal dust problems while maintaining its capacity to act as a solidifying agent at a remote...
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5315937 |
Waste material combustion ash ejection system
A waste material combustion apparatus for disposing of an assortment of waste material like garbage, sludge and burnable trash in which the ash produced as a result of combustion of that assorted...
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5297495 |
Process of incinerating waste materials
For the incineration of waste materials, a process is described, in which the waste materials are reduced in size as far as necessary and are subsequently optionally mixed with fuel and are...
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5237940 |
Method and apparatus for the environmentally compatible vitrification of fluid or solid residues from special-class waste incinerators
Waste is incinerated in a rotary furnace which discharges slag and exhaust gas connected to an afterburning chamber. The slag is discharged from the afterburning chamber directly into a glass...
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5207164 |
Process to limit the production of flyash by dry bottom boilers
In a process to limit the production of flyash by dry bottom boilers, flyash is collected from flue gas using a collector such as an electrostatic precipitator. The collected flyash is carried in a...
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5093085 |
Fluidized bed reactor method and apparatus
Fluidized bed reactor method and apparatus for removal of coarse material from the reactor. The apparatus comprises a discharge device including a substantially vertical pipe portion connected at...
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5090338 |
Apparatus and process for treating waste incineration flyash
Incineration flyash is treated by reducing the organic chlorine compounds contained in the flyash. A cylindrical body equipped with a rotating shaft having a screw conveyor and agitating blades for...
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5086714 |
Vibratory hearth
A hearth for use in a thermal processor or incinerator includes a substantially planar grate which is inclined upwardly and which is vibrated in such a way that material deposited on the input end...
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5082572 |
Ash vibration process and apparatus
An apparatus and method for dewatering combined ash or other combustion related products. The apparatus aspects of the invention consist of a quench bath having a curved portion containing a...
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5078065 |
Incinerating-fusing system for city refuse disposal
An incinerating-fusing system for city refuse is disclosed. The system includes an incinerating furnace for incinerating city refuse, a fusing furnace for fusing ash from the incinerating furnace...
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5054405 |
High temperature turbulent gasification unit and method
Waste materials are efficiently and completely incinerated in a gasification unit with a minimum amount of fly ash while ensuring complete sterilization of residual materials. The gasification unit...
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5050512 |
Combustion chamber and process for combusting at least partially combustible substances
A combustion chamber for combusting a substance includes a burner and at least three successively disposed parts including a primary chamber, a secondary chamber and an ash discharge chamber. The...
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5044286 |
Process to eliminate production of fly ash by wet bottom boilers
A method of recycling fly ash as slag in a wet bottom furnace is described. The furnace may have a cyclone furnace, a pulverized coal furnace, or any other type of furnace producing wet slag. All...
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5027722 |
Process and device for processing slag and other combustion residues from waste incineration plants
The slag occurring in the waste burning plant (1) is conducted from the slag exit (6) of the oven, directly into a separator (7) for coarse material and iron. There is no chilling in water. After...
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5024169 |
Process to refine flyash captured from pulverized coal fired boilers and auxiliary equipment
The present invention pertains to a process and apparatus for the refinement of exhaust particulate matter from a boiler or other device burning an organic fuel such as coal. More specifically the...
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5017196 |
Method for enhancing energy recovery from a high temperature, high pressure synthesis gas stream
A process for the partial combustion of finely divided coal at high temperature and pressures to make synthesis gas having entrained particles of fly ash which are separated from the gas at high...
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4977837 |
Process and apparatus for reducing heavy metal toxicity in fly ash from solid waste incineration
A process and apparatus for the vitrification of fly ash produced from an incineration system for solid waste materials, including the combining of fly ash extracted from the pollution control...
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4961389 |
Slag processing system for direct coal-fired gas turbines
Direct coal-fired gas turbine systems and methods for their operation are provided by this invention. The gas turbine system includes a primary zone for burning coal in the presence of compressed...
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