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公开(公告)号：US4595576A
公开(公告)日：1986-06-17
申请号：US413419
申请日：1982-08-31
CPC分类号： B01D53/34 , C01F11/464 , Y10S423/16
摘要： Spent absorbents resulting from desulfurization of flue gas in a spray drying-absorption process contain substantial amounts of sulfite, e.g. calcium sulfite. Said sulfite is oxidized into sulfate by heating of the spent absorbent in the presence of an oxygen-containing gas, preferably at temperatures of 350.degree.-600.degree. C. Thereby the spent absorbents may be converted into materials having industrial utility.
摘要翻译： 在喷雾干燥吸收过程中由烟道气脱硫产生的废吸收剂含有大量的亚硫酸盐， 亚硫酸钙。 所述亚硫酸盐通过在含氧气体的存在下，优选在350-600℃的温度下加热废弃的吸收剂而被氧化成硫酸盐。由此，废弃的吸收剂可以转化为具有工业实用性的材料。
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公开(公告)号：US4666694A
公开(公告)日：1987-05-19
申请号：US719161
申请日：1985-04-02
CPC分类号： C01F11/464 , B01D53/501 , B01J8/24 , C01P2004/61
摘要： A dry particulate sulfite-containing material produced in a flue gas desulfurization process is oxidized and agglomerated in a fluidized bed reactor, wherein the material is fluidized in an oxygen-containing gas. The oxygen-containing gas which is supplied to the fluidized bed has a temperature below the agglomeration temperature of said particulate material. Due to the exothermic character of the oxidation, the temperature of the fluidized bed is maintained above the agglomeration temperature of the particulate material. Gas with entrained particles leaving the fluidzed bed are cooled during its passing through the freeboard of the fluidized bed reactor, whereby problems due to sticking of said entrained particles are avoided. At least a part of said entrained particles are recycled to the fluidized bed reactor.A fluidized bed reactor is provided suitable for performing the combined oxidation and agglomeration.
摘要翻译： 在烟道气脱硫工艺中生产的含干燥的含亚硫酸成份的材料在流化床反应器中被氧化和附聚，其中材料在含氧气体中流化。 供给流化床的含氧气体的温度低于所述颗粒材料的附聚温度。 由于氧化的放热特性，流化床的温度保持高于颗粒材料的附聚温度。 带有流出床的夹带颗粒的气体在通过流化床反应器的干舷时被冷却，从而避免了由于粘附所夹带的颗粒引起的问题。 至少一部分所述夹带的颗粒被再循环到流化床反应器中。 提供了适于进行组合氧化和附聚的流化床反应器。
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公开(公告)号：US5800610A
公开(公告)日：1998-09-01
申请号：US836434
申请日：1997-05-09
申请人： Ebbe S. Jons
发明人： Ebbe S. Jons
摘要： The invention relates to a method for manufacturing cement clinker whereby the raw meal is initially subjected to preparatory processing, e.g. by comminution, homogenization and/or drying, and, eventually, nodulized and burned, with the nodulization process itself taking place in a stationary burning reactor. By the method according to the invention a sulphatic compound is added to the raw meal in a sufficient quantity before introducing the raw meal into the stationary burning reactor or directly into the stationary reactor, e.g. through the combustion air or together with the fuel. The sulphatic compound may be selected among all types of sulphates which will not affect the properties of the finished cement. It is particularly advantageous to use calcium sulphate, either naturally occurring or industrial by-products and regular waste materials, e.g. used absorbent from dry exhaust gas desulphurization. In order that the method according to the invention can be carried out it is preferred that the sulphate content of the calcined raw meal be considerably higher than the alkali oxide content, in accordance with the following formula (the percentages indicated are percentages by weight): %SO.sub.3 >%K.sub.2 O+1.5.multidot.%Na.sub.2 O where the SO.sub.3 percentage represents the total content of sulphate in the material streams introduced into the process.
摘要翻译： PCT No.PCT / DK95 / 00381 Sec。 371日期：1997年5月9日 102（e）日期1997年5月9日PCT提交1995年9月25日PCT公布。 公开号WO96 / 15076 日期1996年5月23日本发明涉及一种制造水泥熟料的方法，其中生料最初进行预处理，例如 通过粉碎，均化和/或干燥，并最终结节化和燃烧，结节过程本身发生在固定的燃烧反应器中。 通过根据本发明的方法，在将生料进入固定燃烧反应器之前或直接进入固定反应器中，例如，将足量的硫酸化合物加入到生料中。 通过燃烧空气或与燃料一起。 所述硫酸盐化合物可以选自不影响成品水泥性能的所有类型的硫酸盐。 特别有利的是使用硫酸钙，天然存在的或工业上的副产物和常规废物，例如硫酸钙。 使用吸收剂从干式废气脱硫。 为了能够进行本发明的方法，根据下式（所表示的百分比是重量百分比），优选煅烧生料的硫酸盐含量显着高于碱金属氧化物含量： ％SO3>％K2O + 1.5x％Na2O，其中SO3百分比表示引入该过程的材料流中硫酸盐的总含量。
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公开(公告)号：US4789532A
公开(公告)日：1988-12-06
申请号：US2250
申请日：1987-01-12
申请人： Ebbe S. Jons , Jens T. Moller , Kirsten K. Nielsen
发明人： Ebbe S. Jons , Jens T. Moller , Kirsten K. Nielsen
CPC分类号： B01D53/501 , B01D53/68 , C04B18/105 , Y02W30/92
摘要： In a method for cleaning of flue gas derived from waste incineration, of the kind which comprises spray drying a lime slurry in the hot flue gas, the amount of active lime used is from 1.5 to 2.5 times larger than the amount reacting with the acidic components of the flue gas; furthermore, ground blast-furnace slag is incorporated in the lime slurry in an amount that is equivalent to 30 to 100% by weight of the amount of calcium salts generated at the flue gas cleaning. An end-product is hereby obtained, which upon admixing with water, forms a concrete-like material with high mechanical strength and great ability to retain the pollutants present therein so that the product is suited for disposal in nature with a minimum risk of polluting water streams and ground water.
摘要翻译： 一种清洗源自废物焚烧的烟道气的方法，其中包括喷雾干燥热烟道气中的石灰浆料，所用的活性石灰的使用量是与酸性组分反应的量的1.5-2.5倍 的烟气; 此外，将粉碎的高炉渣以相当于在烟道气净化时产生的钙盐的量的30至100重量％的量掺入石灰浆中。 因此，得到最终产品，其与水混合形成具有高机械强度并且具有保持其中存在的污染物的能力的混凝土样材料，使得该产品适于在自然界中以最小的污染水的风险进行处置 溪流和地下水。
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5.发明授权
公开(公告)号：US4495162A
公开(公告)日：1985-01-22
申请号：US413417
申请日：1982-08-31
申请人： Ebbe S. Jons , Klaus E. Gude
发明人： Ebbe S. Jons , Klaus E. Gude
CPC分类号： C04B11/264 , B01D53/34 , B01D53/501 , C01F11/464 , C04B22/145
摘要： A calcium sulfate anhydrite material is prepared from a spent absorbent resulting from desulfurization of flue gases. First the sulfite in the spent absorbent is oxidized into sulfate, preferably by heating in an oxygen containing gas, and thereafter the chloride content of the spent absorbent is reduced by heating the spent absorbent at a temperature of 600.degree.-950.degree., preferably 750.degree.-950.degree. C. together with fly ash. Said fly ash may be recovered together with the spent absorbent in the desulfurization process, or it may have been recovered separately and mixed with the spent absorbent.The product may be used as cement additive or for other purposes in which calcium sulfate anhydrite is conventionally utilized.
摘要翻译： 硫酸钙无水石膏材料由废气脱硫制成的废吸附剂制备。 首先将废弃的吸收剂中的亚硫酸盐氧化为硫酸盐，优选通过在含氧气体中加热，然后通过在600-950℃，优选750℃的温度下加热废吸收剂来减少废弃的吸收剂的氯化物含量。 -950℃以及粉煤灰。 所述飞灰可以在脱硫过程中与废吸收剂一起回收，或者可以单独回收并与废吸收剂混合。 该产品可以用作水泥添加剂或用于通常使用硫酸钙无水石膏的其它目的。
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