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1.发明公开METHOD OF CONTROLLING CHEMICAL IN WET DECARBURIZATION OF FLY ASH 审中-公开VERFAHREN ZUR STEUERUNG DER NASSCHEMISCHEN ENTKOHLUNG VON FLUGASCHE
公开(公告)号：EP2263803A1
公开(公告)日：2010-12-22
申请号：EP09727020.1
申请日：2009-03-17
CPC分类号： B03D1/02 , B03D1/10 , C04B18/084 , Y02W30/92 , C04B20/023
摘要： To reduce cost of chemical by reducing quantity of foaming agent used when removing unburned carbon in fly ash with wet floatation and to prevent decrease in activity index of the fly ash.
MEANS FOR SOLUTION
In wet decarbonization of fly ash comprising the steps of: adding water to fly ash to generate slurry; adding hydrophobizing agent and foaming agent to the slurry and agitating them to generate bubbles; and adhering unburned carbon in the fly ash to the bubbles to float them to remove the unburned carbon in the fly ash, when sedimentation component at wet floatation separation is solid-liquid separated and liquid phase obtained by solid-liquid separation is reused for another floatation separation for new fly ash, the quantity of foaming agent added to the slurry is adjusted such that concentration of the foaming agent in liquid phase is in a predetermined range. When adjusting the concentration of the foaming agent in the liquid phase, it is possible to measure COD concentration in the liquid phase and adjust the quantity of the foaming agent added to the slurry in such a manner that the COD concentration is in a predetermined range.摘要翻译： 通过减少在浮法中除去飞灰中的未燃烧碳并且防止飞灰的活性指数降低而使用的发泡剂的量减少化学成本。 解决方案在粉煤灰脱湿中，包括以下步骤：将水添加到飞灰中产生浆料; 向浆料中加入疏水化剂和发泡剂，并搅拌它们以产生气泡; 并将飞灰中的未燃烧碳附着到气泡上，使其浮起，以除去飞灰中未燃烧的碳，当湿浮选分离时的沉降成分被固液分离，并通过固液分离得到的液相再次用于另外的浮选 分离新的飞灰，调节添加到浆料中的发泡剂的量，使得液相中的发泡剂的浓度在预定范围内。 当调节液相中发泡剂的浓度时，可以测量液相中的COD浓度，并且以使COD浓度在预定范围内调节添加到浆料中的发泡剂的量。
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2.发明公开
公开(公告)号：EP2103576A1
公开(公告)日：2009-09-23
申请号：EP07832837.4
申请日：2007-11-30
CPC分类号： C04B7/52 , B03D1/006 , B03D1/02 , B03D2201/02 , B03D2203/08 , C04B28/02 , C04B2111/1087 , F27B7/20 , F27D17/008 , Y02W30/92 , C04B18/08 , C04B7/361
摘要： [Subject] To provide a cement manufacturing apparatus and the like capable of increasing quantity of fly ash used in the apparatus while controlling unburned carbon content in cement within a permissible range.
[Means for Solution] The cement manufacturing apparatus and the like comprises a removal means for removing unburned carbon from gypsum, and a grinding means for grinding gypsum from which unburned carbon is removed by the removal means together with clinker to generate cement. With the apparatus, total unburned carbon content in cement can be reduced, and the quantity of fly ash used in the apparatus can be increased by the reduced amount of unburned carbon. The removal means can remove unburned carbon contained in gypsum as well as unburned carbon contained in fly ash, and the grinding means may grind the fly ash from which unburned carbon is removed together with the gypsum, from which unburned carbon is removed, and clinker. The removal means may simultaneously remove unburned carbon contained in gypsum and unburned carbon contained in fly ash.摘要翻译： [主题]提供一种在允许范围内控制水泥中未燃碳含量的同时能够增加设备中使用的飞灰量的水泥制造设备等。 [解决方案]水泥制造装置等包括用于从石膏中除去未燃烧的碳的去除装置，以及用于研磨石膏的研磨装置，通过除去装置与熟料一起除去未燃烧的碳以产生水泥。 利用该装置，可以减少水泥中的总未燃烧碳含量，并且可以通过减少未燃碳量来增加装置中使用的飞灰的量。 去除装置可以去除石灰中含有的未燃烧碳以及飞灰中含有的未燃碳，并且研磨装置可以将除去未燃碳的飞灰与从中除去未燃碳的石膏和熟料一起研磨。 除去装置可以同时除去石灰中含有的未燃碳和飞灰中含有的未燃碳。
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公开(公告)号：EP2103575B1
公开(公告)日：2012-01-11
申请号：EP07832843.2
申请日：2007-11-30
CPC分类号： C04B7/364 , B03B9/04 , C04B7/28 , C04B7/38 , C04B7/4423 , F27B7/20 , Y02P40/126 , Y02P40/145
摘要： [PROBLEMS] To effectively utilize coal ash while lowering the concentration of mercury in a gas discharged from a cement kiln. [MEANS FOR SOLVING PROBLEMS] Coal ash from a thermal power plant or the like is received by a system for producing cement. The received coal ash is divided into ash and unburnt carbon. The ash thus divided is utilized as a material for cement in the system for producing cement, while the unburnt carbon thus divided is utilized in the system for producing cement depending on the concentration of mercury in a gas discharged from a cement kiln of the system for producing cement. In the case where gags discharged from the cement kiln of the system for producing cement contains mercury at a high concentration, it is possible that the unburnt carbon in the coal ash, which contains mercury localized therein, is not fed into the system for producing cement but processed outside the system for producing cement or the unburnt carbon is fed in a controlled amount into the system for producing cement. Mercury is removed form the thus separated unburnt carbon and the unburnt carbon, from which mercury has been removed, can be used as a fuel in the system for producing cement.
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4.发明公开METHOD OF PROCESSING COAL ASH AND PROCESSING SYSTEM 有权VERFAHREN ZUR VERARBEITUNG VON KOHLENASCHE UND VERARBEITUNGSSYSTEM
公开(公告)号：EP2103575A1
公开(公告)日：2009-09-23
申请号：EP07832843.2
申请日：2007-11-30
CPC分类号： C04B7/364 , B03B9/04 , C04B7/28 , C04B7/38 , C04B7/4423 , F27B7/20 , Y02P40/126 , Y02P40/145
摘要： [Subject] To effectively utilize coal ash while reducing mercury concentration in cement kiln exhaust gas.
[Means for Solution] Coal ash is received from a thermal power plant or the like; the received coal ash is separated into ash and unburned carbon; the separated ash is utilized in a cement manufacturing facility as a cement raw material; and the separated unburned carbon is utilized in the cement manufacturing facility in accordance with mercury concentration in gas exhausted from a cement kiln of the cement manufacturing facility. In case that the mercury concentration in the gas exhausted from the cement kiln of the cement manufacturing facility is high, in the coal ash, unburned carbon with high mercury content can be treated in facilities other than the cement manufacturing facility without feeding the unburned carbon to the cement manufacturing facility, or the quantity of such unburned carbon fed to the cement manufacturing facility cay be adjusted. It is possible to separate mercury from the separated unburned carbon, and utilize the unburned carbon from which mercury is separated in the cement manufacturing facility as a fuel.摘要翻译： [主题]有效利用煤灰，同时降低水泥窑废气中的汞浓度。 [解决方案]从火力发电厂等接收煤灰; 接收的煤灰分为灰分和未燃碳; 分离的灰分用作水泥制造设备中的水泥原料; 并且分离的未燃碳根据水泥制造设备的水泥窑排出的气体中的汞浓度在水泥制造设施中使用。 在水泥制造设备的水泥窑排出的气体中的汞浓度高的情况下，在煤灰中，含汞量高的未燃烧碳可以在水泥制造设备以外的设施中进行处理，而不将未燃碳 水泥制造设备或供应给水泥制造设备的未燃烧碳的数量可以调整。 可以将汞从分离的未燃烧碳中分离出来，并利用在水泥制造设备中分离汞的未燃烧碳作为燃料。
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