-
公开(公告)号：US06572709B1
公开(公告)日：2003-06-03
申请号：US09567722
申请日：2000-05-10
IPC分类号： B08B702
CPC分类号： F22B37/483 , B08B7/028 , B08B9/08
摘要： An ultrasonic cleaning method for cleaning the film, scale and sludge from internal surfaces of tubes, tubesheets, tube support plates and channel heads of steam generators previously exposed to water or steam at temperatures of more than 200° C. introduces an ultrasonic transducer or transducer array into the steam generator and submerges the ultrasonic transducer and the surface to be cleaned in water or aqueous solution. Ultrasonic energy is introduced into the water at a power level of 20 watts/gallon or more and at frequencies of from 10 to 200 KHz. An array of transducers is employed to introduce 20 to 60 watts/gallon of water or more into the steam generator. In one practice, the transducer or transducer array is suspended in the steam generator. An array of transducers can be assembled (and later disassembled) in situ where individual transducers or small transducer subassemblies must introduced into the steam generator through small hand holes or other small diameter nozzles. In another practice, the ultrasonic transducer is moved through the water while introducing the ultrasonic energy into the water. Large amounts of ultrasonic energy can be introduced into the water and the energy nodes moved through the water so that the energy can efficiently penetrate into the interior rows of tubes and other internal structures.
摘要翻译： 一种超声波清洗方法，用于从先前暴露于水或蒸气的蒸汽发生器的管，管支架板和管道头的内表面清洗膜，垢和污泥，其温度大于200℃。引入超声波换能器或换能器 排列到蒸汽发生器中，并将超声波换能器和要清洁的表面浸没在水或水溶液中。 超声能量以20瓦特/加仑或更高的功率水平和10至200KHz的频率被引入水中。 使用一组换能器将20至60瓦/加仑的水或更多的水引入蒸汽发生器。 在一种实践中，换能器或换能器阵列悬挂在蒸汽发生器中。 传感器阵列可以在原位组装（并随后拆卸），其中各个换能器或小型换能器组件必须通过小手孔或其他小直径喷嘴引入蒸汽发生器。 在另一个实践中，超声波换能器通过水移动，同时将超声能量引入水中。 可以将大量的超声波能量引入水中，并且能量节点移动通过水，使得能量能够有效地渗透到管和其他内部结构的内部行中。
-
公开(公告)号：US06740168B2
公开(公告)日：2004-05-25
申请号：US09884439
申请日：2001-06-20
IPC分类号： C11D165
CPC分类号： C02F5/12 , C02F2103/023 , C02F2301/046 , C23G1/088 , C23G1/19 , F28G7/00 , F28G9/00 , G21F9/28
摘要： The present invention provides an improved scale conditioning composition and method that results in improved dissolution and disruption of tube scale, hardened sludge and other deposits composed primarily of highly densified magnetite such as those found in heat exchange vessels. After treatment with the advanced scale conditioning composition, these magnetite rich deposits are more easily removed using known and commercially available high pressure hydro-mechanical cleaning techniques. The present invention further provides effective cleaning in a short period of time and at relatively low temperatures, while reducing the amount of waste produced and reducing the resulting corrosion of carbon and low alloy steel components within the steam generator during the cleaning process.
摘要翻译： 本发明提供改进的水垢调理组合物和方法，其导致管鳞，硬化污泥和主要由高度致密化的磁铁矿（例如在热交换容器中发现的那些）中组成的其它沉积物的溶解和破坏。 在使用高级水垢调理组合物处理之后，使用已知和市售的高压水力机械清洁技术更容易地除去富含富铁的沉积物。 本发明进一步提供了在较短的时间和相对低的温度下的有效清洁，同时减少了在清洁过程中产生的废物的量并减少了蒸汽发生器内的碳和低合金钢组分的腐蚀。
-
公开(公告)号：US5841826A
公开(公告)日：1998-11-24
申请号：US805004
申请日：1997-02-25
申请人： Michael W. Rootham , Mark J. Parvin
发明人： Michael W. Rootham , Mark J. Parvin
CPC分类号： C02F5/12 , F22B37/483 , F28G7/00 , F28G9/00
摘要： A method for dislodging and dislocating scale, sludge, corrosion and other deposits from heat transfer equipment surfaces, such as boiler and heat exchanger surfaces in steam generation systems, which are in contact with aqueous systems. This invention relates to the introduction of an aqueous chemical cleaning solution into the heat exchanger vessel. The aqueous chemical cleaning solution contains a non-corrosive carrier agent and/or a non-corrosive intercalation agent. The carrier agent has the ability to penetrate the matrix of the sludge, scale and other deposits, and the intercalation agent causes the sludge, scale and other deposits to fracture and break apart. This invention relates to generating a series of pressure pulses within the non-corrosive aqueous chemical cleaning solution to create shock waves for dislodging, dissolving and fluidizing sludge and corrosion products. This invention relates to the soaking of scale, sludge and other deposits in aqueous chemical cleaning solutions to dislodge and dislocate the sludge, scale and other deposits. This invention further relates to an operation utilizing a high velocity jet of water, the water containing a chemical cleaning additive, to dislodge and dislocate scale, sludge, corrosion and other deposits from the interior surfaces of heat exchanger vessels, in particular, the interior of the secondary side of nuclear steam generators. The aqueous chemical cleaning solution utilized in the aforementioned soaking operation and the chemical cleaning additive contained in the aforementioned jet of water, may be a chelate agent or a non-corrosive chemical cleaning agent containing a carrier and/or intercalation agent. The non-corrosive chemical cleaning agent may be a lower alkyl amine, e.g., dimethylamine, lower hydroxyalkyl amine, e.g., ethanolamine and pentanolamine, or cyclic dimines, e.g., 1,10-phenanthroline, 2,9-dimethyl-1,10-phenanthroline, 2,2'-bipyrindine and 4,4'-bypyridine, or combinations thereof.
-
4.发明授权Chemical cleaning method for the removal of scale sludge and other deposits from nuclear steam generators 失效用于从核蒸汽发生器中去除污垢和其他沉积物的化学清洗方法
公开(公告)号：US5764717A
公开(公告)日：1998-06-09
申请号：US521059
申请日：1995-08-29
申请人： Michael W. Rootham
发明人： Michael W. Rootham
CPC分类号： F28G9/00 , C02F5/12 , F22B37/483 , F28G7/00
摘要： An improved method for removing scale, sludge, corrosion and other debris and deposits from the interior of a heat exchanger vessel such as a nuclear steam generator, includes generating pressure pulses in a non-corrosive, strongly basic, amine-containing chemical cleaning agent in aqueous solution after the agent has been introduced into the interior of the vessel to create shock waves in the liquid for dislodging, dissolving and fluidizing sludge and corrosion products. The chemical cleaning agent is an aqueous solution containing at least one of the group of lower alkyl amines, e.g., dimethylamine, ethylamine, 1,2-diaminoethane, or diaminopropane, lower alkanol amines, e.g., ethanolamine, 2-methyl-2-amino-1-propanol, and 5-aminopentanol, lower alkoxy alkyl amines, e.g., 3-methoxypropylamine, and cyclic diimines, e.g., 1,10-phenanthroline, 2,9-dimethyl-1,10-phenanthroline, 4,7-dimethyl-1,10-phenanthroline, 2,2'-bipyridine, and 4,4'-bipyridine, and terpyridine, or combinations thereof. The method further includes simultaneously recirculating the chemical cleaning agent through a filter assembly during the pressure pulsing operation in order to remove fluidized sludge and corrosion products dislodged by the pressure pulsing and chemical action, thereby affording them no opportunity to resettle back onto the surfaces of the heat exchanger vessel and interfere with the chemical cleaning of the vessel. The method reduces not only the time required for a particular chemical cleaning agent to effectively clean the vessel, but further reduces the number of times such chemicals need to be introduced into the vessel, which in turn results in the production of less radioactive liquid waste products, and minimizes new corrosion through use of relatively non-corrosive cleaning agents.
摘要翻译： 用于从诸如核蒸汽发生器的热交换器容器的内部去除垢，污泥，腐蚀和其它碎屑和沉积物的改进方法包括在非腐蚀性强碱性的含胺化学清洁剂中产生压力脉冲 在将试剂引入容器内部之后，在溶液中产生冲击波，以便使污泥和腐蚀产物脱落，溶解和流化。 化学清洗剂是含有至少一种低级烷基胺的水溶液，例如二甲胺，乙胺，1,2-二氨基乙烷或二氨基丙烷，低级链烷醇胺，例如乙醇胺，2-甲基-2-氨基 -1-丙醇和5-氨基戊醇，低级烷氧基烷基胺，例如3-甲氧基丙胺和环状二亚胺，例如1,10-菲咯啉，2,9-二甲基-1,10-菲咯啉，4,7-二甲基 -1,10-菲咯啉，2,2'-联吡啶和4,4'-联吡啶，以及三联吡啶或其组合。 该方法还包括在压力脉动操作期间同时使化学清洁剂再循环通过过滤器组件，以便除去由压力脉动和化学作用而移动的流化淤渣和腐蚀产物，从而使它们无机会重新回到 热交换器容器并干扰容器的化学清洗。 该方法不仅减少了特定化学清洁剂有效清洁容器所需的时间，而且进一步减少了这种化学品需要引入容器的次数，从而导致产生较少的放射性废液产品 ，并通过使用相对非腐蚀性的清洁剂使新的腐蚀最小化。
-
公开(公告)号：US07344602B2
公开(公告)日：2008-03-18
申请号：US10762500
申请日：2004-01-23
IPC分类号： F28G9/00
CPC分类号： C02F5/12 , C02F2103/023 , C02F2301/046 , C23G1/088 , C23G1/19 , F28G7/00 , F28G9/00 , G21F9/28
摘要： An improved scale conditioning composition and method is disclosed that results in improved dissolution and disruption of tube scale, hardened sludge and other deposits composed primarily of highly densified magnetite such as those found in heat exchange vessels, particularly steam generators. After treatment with the advanced scale conditioning composition, these magnetite rich deposits are more easily removed using known and commercially available high pressure hydro-mechanical cleaning techniques. The present invention further provides effective cleaning in a short period of time and at relatively low temperatures, while reducing the amount of waste produced and reducing the resulting corrosion of carbon and low alloy steel components within the steam generator during the cleaning process.
摘要翻译： 公开了一种改进的尺寸调节组合物和方法，其导致管鳞，硬化污泥和主要由高度致密化的磁铁矿组成的其它沉积物的溶解和破坏，例如在热交换容器，特别是蒸汽发生器中发现的那些。 在使用高级水垢调理组合物处理之后，使用已知和市售的高压水力机械清洁技术更容易地除去富含富铁的沉积物。 本发明进一步提供了在较短的时间和相对低的温度下的有效清洁，同时减少了在清洁过程中产生的废物的量并减少了蒸汽发生器内的碳和低合金钢组分的腐蚀。
-
公开(公告)号：US4379081A
公开(公告)日：1983-04-05
申请号：US243103
申请日：1981-03-12
CPC分类号： G21F9/165
摘要： A method of encapsulating radioactive waste including withdrawing radioactive liquid having a retardant therein from a source. The retardant may including borates, or other additives, which retard the setting of cements by preventing hydration at cement particles in the mix. The liquid is mixed with ordinary Portland cement and subjected to long term shear far in excess of that needed to form ordinary grout. The use of shear to overcome set retardation, and similarly, the deliberate regulation of acceleration of set in hydraulic cement pastes by the utilization of retardants plus shear produces a thixotropic paste with extreme moldability which will not bleed, and finally sets more rapidly than can be expected with normal mixing to form a very strong product.
摘要翻译： 一种封装放射性废物的方法，包括从源头抽出具有阻燃剂的放射性液体。 阻燃剂可以包括硼酸盐或其它添加剂，其通过防止混合物中的水泥颗粒的水化来阻止水泥的凝固。 液体与普通硅酸盐水泥混合，经受长期剪切，远远超过形成普通灌浆所需的剪切。 使用剪切来克服设定的延迟，类似地，通过利用阻燃剂加剪切力来有意调节水硬性水泥浆中的加速度，产生具有极端成型性的触变性糊剂，其不会流失，并且最终比可以 预期正常混合形成非常强的产品。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.019 秒)
