摘要:
A device, which conveys and handles material from a combustion boiler, includes at least one conveyor belt and a housing surrounding the conveyor belt. The conveyor belt includes at least one horizontal collection area and a handling area. The housing includes at least one outlet for the material. Furthermore, the handling area has a first length of at least 10 m and an inclination of at least 38°. Some arrangements relate to a corresponding combustion plant and to a method for handling hot ash.
摘要:
A method for treating fly ash from incineration plants having at least one combustion chamber includes precipitating fly ash in a dust separator, and treating the fly ash using a gaseous reducing agent at a temperature between 600 and 700° C. so as to selectively convert a metal sulfate into at least one of a sulfide and a metallic form of the metal sulfate.
摘要:
Methods treat ash from waste incineration, wherein the methods at least comprise: a) the digestion of the ash by a leaching liquor containing phosphate ions in solution such as to form a first solid phase comprising impurities and a first liquid phase comprising phosphate ions; and b) the separation of said first liquid phase comprising phosphate ions from said first solid phase. Step a) is carried out for a duration of less than one hour or at a temperature of more than 40° C.
摘要:
A gasifier comprises an internal chamber, a slag collection region, a slag passageway, a slag breaker, and an actuator. The internal chamber comprises a main combustion region that is configured and adapted to gasify fuel. The slag collection region is located beneath the main combustion region. The slag passageway operatively connects the main combustion region to the slag collection region. The slag breaker comprises a face that is movable relative to the internal chamber. The face is configured and adapted to move within the slag passageway in a manner such that the face contacts and mechanically breaks solidified slag into chunks of solidified slag that then fall into the slag collection region. The actuator is connected to the slag breaker and is configured and adapted to move the face of the slag breaker.
摘要:
A vacuum pump includes a vacuum pump having a discharge port to which an abatement part for treating an exhaust gas discharged from the vacuum pump to make the exhaust gas harmless is attached. The vacuum pump includes a cylindrical member having an exhaust gas introduction port for introducing the exhaust gas to be treated and a gas outlet port for discharging gases which have been treated, a plurality of fuel nozzles provided at a circumferential wall of the cylindrical member for ejecting a fuel, and a plurality of air nozzles provided at the circumferential wall of the cylindrical member for ejecting air so as to form a swirling flow of air along an inner circumferential surface of the circumferential wall. The air nozzles are disposed at a plurality of stages spaced in an axial direction of the cylindrical member.
摘要:
A method and a device are involved in feeding hot material from a combustion boiler including at least one housing, at least one conveyor belt and at least one redirecting device, wherein the at least one conveyor belt first feeds the material with a first horizontal directional component and after passage through the redirecting device the material is fed with at least a second horizontal directional component that deviates from the first. Also, the material with the first directional component outside the redirecting device is continuously separated from the material with the second directional component. Additionally, the first directional component and the second directional component span an angle of 135° to 180°.
摘要:
A method for treating fly ash from incineration plants having at, least one combustion chamber includes precipitating fly ash in a dust separator, and treating the fly ash using a gaseous reducing agent at a temperature between 600 and 700° C. so as to selectively convert a metal sulfate into at least one of a sulfide and a metallic form of the metal sulfate.
摘要:
There is disclosed a method of reducing carbon levels in fly ash. The method comprises the steps of: (a) placing the fly ash in a microwave reactor; (b) exposing said fly ash to microwave radiation in the presence of carbon-free material so as to raise its temperature to at least 600° C. while agitating the fly ash in the presence of oxygen; and; (c) terminating exposure of said fly ash to said microwave radiation when the carbon content of the fly ash falls below a predetermined value. The method is also used to reduce ammonia levels in fly ash.
摘要:
There is disclosed a method of reducing carbon levels in fly ash. The method comprises the steps of: (a) placing the fly ash in a microwave reactor; (b) exposing said fly ash to microwave radiation in the presence of carbon-free material so as to raise its temperature to at least 600null C. while agitating the fly ash in the presence of oxygen; and; (c) terminating exposure of said fly ash to said microwave radiation when the carbon content of the fly ash has fallen below a predetermined value.
摘要:
To provide a method and an apparatus for removing radioactive cesium from waste containing radioactive cesium at low cost. A radioactive cesium removal apparatus 1 including: an incinerator 22 for burning an inflammable waste polluted with radioactive cesium; a suspension preheater 23 for, with the combustion exhaust gas G5 and a sensible heat of the incineration ash of a combustible C discharged from the incinerator, generating calcium oxide or/and magnesium oxide from a source of calcium oxide or/and a source of magnesium oxide, cyclones of the suspension preheater being arranged in multistages; a rotary kiln 21 for burning an inorganic substance S polluted with radioactive cesium together with the calcium oxide or/and the magnesium oxide and the incineration ash D3 including the radioactive cesium; and collectors 31, 32 for collecting cesium volatilized in the rotary kiln.