Abstract:
In a method of processing fuel shale to produce energy and cement clinker at the same time, oil shale and/or coal shale are disintegrated, homogenized and activated in a pin beater mill or vibrating mill. The effect of the treatment is monitored by X-ray microanalysis and the treatment is automatically controlled. The admixtures required for the production of a cement having the desired quality are added simultaneously at controlled rates. The thus treated material is then burnt in a boiler plant, preferably at combustion temperatures up to 1400.degree.C and with simultaneous sintering, whereby ash and/or slag is formed which contains at least 60% cement clinker. Said cement clinker is separated from the residual ash and slag and in an impact-type mill is disintegrated in such a manner that each clinker particle is subjected to 3-8 impacts within a time of preferably less than 0.01 second by beating elements which are moved at a velocity of at least 15 meters per second, preferably at a velocity between 50 meters and 250 meters per second.
Abstract:
Fuel mixed in water is combusted in a reactor having an internal operating pressure and temperature greater than 3200 psi and greater than 374° C., where the combustion of the fuel is exothermic. Air and fuel are pressurized for introduction into the reactor to a pressure greater than the internal operating pressure using energy generated from the combustion of the fuel, and the pressurized air and the pressurized fuel are injected into the reactor. Pressurized water from the reactor is injected into a drive water column that is partially filled with water to increase a pressure of the drive water column, and water at a temperature less than 100° C. is injected into the reactor to replace water from the reactor that is injected into the drive water column. Pressurized water from the drive water column is used to drive a hydroelectric drive system to produce electrical power.
Abstract:
A method for the treatment of waste by plasma treating the waste to destroy the hazardous organic components and to yield a slag and an off-gas by plasma treating the waste in the presence of added oxygen gas in a transferred-arc plasma treatment unit, followed by directing off-gas from the plasma treatment unit to a thermal oxidizer combustion chamber.
Abstract:
Methods and products for cleanup of fluid medical waste. In one illustrative embodiment, a product may include coconut coir in a loose granulated grade, a compressed pellet grade, or mixture thereof allowing users to choose between grades more ideal for their application while achieving the same results of absorbing and solidifying all human waste and fluids for safe removal and disposal. In a second illustrative embodiment, a product may include coir in a proportion of from about 85% to about 99% and a suitable microbe for initiating bioremediation in an appropriate form in a proportion of from about 20% to about 1%, by weight.
Abstract:
A fuel flexible furnace, including a main combustion zone, a reburn zone downstream from the main combustion zone, and a delivery system operably coupled to supplies of biomass and coal and configured to deliver the biomass and the coal as ingredients of first and reburn fuels to the main combustion zone and the reburn zone, with each fuel including flexible quantities of the biomass and/or the coal. The flexible quantities are variable with the furnace in an operating condition.
Abstract:
A process comprising, providing an agricultural biofuel to a fluidized bed reactor and combusting the agricultural biofuel to produce heat and/or steam is disclosed. In one embodiment systems for generating energy with agricultural biofuel are provided. In one embodiment, the agricultural biofuel is selected from the group consisting of agricultural crops, crop residues, grain processing facility waste, value-added agricultural facility byproducts, livestock production facility waste, livestock processing facility waste and food processing facility waste. In one embodiment, the heat and/or steam is used to generate electricity. In other embodiments, the heat and/or steam is used to power the grain processing facility, livestock production facility, livestock processing facility or food processing facility. In another embodiment, one or more environmental controls are used. In a particular embodiment, ethanol byproducts are used as the agricultural biofuel.
Abstract:
A process comprising, providing an agricultural biofuel to a fluidized bed reactor and combusting the agricultural biofuel to produce heat and/or steam is disclosed. In one embodiment, the agricultural biofuel is selected from the group consisting of agricultural crops, crop residues, grain processing facility waste, value-added agricultural facility byproducts, livestock production facility waste, livestock processing facility waste and food processing facility waste. In one embodiment, the heat and/or steam is used to generate electricity. In other embodiments, the heat and/or steam is used to power the grain processing facility, livestock production facility, livestock processing facility or food processing facility. In another embodiment, one or more environmental controls are used. In a particular embodiment, ethanol byproducts are used as the agricultural biofuel.
Abstract:
A method for making harmless a material to be treated containing a pollutant, including the steps of arranging a pair of ejecting nozzles such that nozzle openings thereof are opposed to each other inside a pressure-proof furnace, thermally treating that material, ejecting the thermally treated material through each of the nozzle openings of the nozzles, respectively, and colliding the material ejected through one of the nozzles with that ejected through the other in a space inside the pressure-proof furnace and between a pair of the nozzle openings such that a portion of the pollutant of the material remaining non-decomposed by the thermal treatment may be decomposed.
Abstract:
In an improved system for recovering heat from a combustion gas produced by burning wastes, the combustion gas or combustible gas produced by partial burning of the wastes subjected to dust filtration in a temperature range of 450-650° C. at a filtration velocity of 1-5 cm/sec under a pressure of from −5 kPa (gage) to 5 MPa before heat recovery is effected. The dust filtration is preferably performed using a filter medium which may or may not support a denitration catalyst. Heat recovery is preferably effected using a steam superheater. The dust-free gas may partly or wholly be reburnt with or without an auxiliary fuel to a sufficiently high temperature to permit heat recovery. The combustion furnace may be a gasifying furnace which, in turn, may be combined with a melting furnace. If desired, the reburning to a higher temperature may be performed under pressure and the obtained hot combustion gas is supplied to a gas turbine to generate electricity, followed by introduction of the exhaust gas from the gas turbine into a steam superheater for further heat recovery. The system can raise the temperature of superheated steam to a sufficient level to enhance the efficiency of power generation without possibility of corrosion of heat transfer pipes by the combustion gas or combustible gas.
Abstract:
In an improved system for recovering heat from a combustion gas produced by burning wastes, the combustion gas or combustible gas produced by partial burning of the wastes subjected to dust filtration in a temperature range of 450-650° C. at a filtration velocity of 1-5 cm/sec under a pressure of from −5 kPa (gage) to 5 MPa before heat recovery is effected. The dust filtration is preferably performed using a filter medium which may or may not support a denitration catalyst. Heat recovery is preferably effected using a steam superheater. The dust-free gas may partly or wholly be reburnt with or without an auxiliary fuel to a sufficiently high temperature to permit heat recovery. The combustion furnace may be a gasifying furnace which, in turn, may be combined with a melting furnace. If desired, the reburning to a higher temperature may be performed under pressure and the obtained hot combustion gas is supplied to a gas turbine to generate electricity, followed by introduction of the exhaust gas from the gas turbine into a steam superheater for further heat recovery. The system can raise the temperature of superheated steam to a sufficient level to enhance the efficiency of power generation without possibility of corrosion of heat transfer pipes by the combustion gas or combustible gas.