公开(公告)号：US06270738B1

公开(公告)日：2001-08-07

申请号：US09421742

申请日：1999-10-20

申请人： Simo Jokinen ,  Stefan Jäfverström ,  Timo Kenakkala

发明人： Simo Jokinen ,  Stefan Jäfverström ,  Timo Kenakkala

IPC分类号： C01G4900

CPC分类号： C01G49/00 ,  C02F1/5245

摘要： The invention relates to a process for preparing a usable product, in particular a water treatment solution which contains ferric iron, from an impure ferric sulfate solution which contains as an impurity at least one other metal, the process comprising a first precipitation step in which a base is added to the said impure ferric sulfate solution in order to raise the pH to approx. 2-5, preferably approx. 3-4, whereupon ferric hydroxide precipitates; following the first precipitation step, a second precipitation step in which there are added to the solution an oxidant and a base to raise the pH to approx. 6-10, preferably approx. 8-9, whereupon the said impurity metal precipitates; and one or more separation steps to separate from the sulfate solution the solids precipitated in the first and the second precipitation steps; as well as possibly an additional step in which the said separated solids, or a portion thereof, are treated further in order to form a usable product.

摘要翻译： 本发明涉及从含有至少一种其它金属的杂质的不纯的硫酸铁溶液制备可用的产品，特别是含有三价铁的水处理溶液的方法，该方法包括第一沉淀步骤，其中碱 加入到所述不纯的硫酸铁溶液中，以将pH升高至约 2-5，优选约 3-4，因此氢氧化铁沉淀;在第一沉淀步骤之后，进行第二沉淀步骤，其中向溶液中加入氧化剂和碱，以将pH升高至约 6-10，优选约 8-9，所述杂质金属析出; 以及在第一和第二沉淀步骤中从硫酸盐溶液中分离固体沉淀的一个或多个分离步骤; 以及可能的另外的步骤，其中进一步处理所述分离的固体或其一部分以形成可用的产物。

公开(公告)号：US5002743A

公开(公告)日：1991-03-26

申请号：US429564

申请日：1989-10-31

申请人： Kari Kokkonen ,  Seppo Tuominiemi ,  Hannu Alppi ,  Timo Kenakkala

发明人： Kari Kokkonen ,  Seppo Tuominiemi ,  Hannu Alppi ,  Timo Kenakkala

IPC分类号： B01D53/50

CPC分类号： B01D53/501

摘要： The invention relates to a process for the removal of sulfur dioxide from hot flue gases (8) which have been obtained by burning a sulfur-containing substance (4) in a boiler (1). In the process, a substance (6), such as lime or limestone, which reacts with sulfur dioxide to form a solid product is fed into the boiler or into the reaction zone (2) subsequent to the boiler, the hot flue gases (8) are cooled in the reaction zone (2) by feeding into it at maximum such an amount of water as the hot flue gases are capable of evaporating, and the substantially dry solid products are separated (3) in the form of dust (10) from the cooled flue gases. According to the invention, the flue gases (11) thus obtained are scrubbed (13) with an alkaline aqueous solution (15) in order to remove the remaining sulfor dioxide and dust from the flue gases, and part (9') of the cycled scrubbing solution (9) is fed into the boiler (1) or the reaction zone (2) in order to evaporate the water from this solution.

公开(公告)号：US4927613A

公开(公告)日：1990-05-22

申请号：US418818

申请日：1989-10-04

申请人： Sirpa Hamala ,  Matti Heikkila ,  Jouko Laine ,  Kari Kokkonen ,  Timo Kenakkala

发明人： Sirpa Hamala ,  Matti Heikkila ,  Jouko Laine ,  Kari Kokkonen ,  Timo Kenakkala

IPC分类号： B01D53/34 ,  B01D53/50

CPC分类号： B01D53/34 ,  B01D53/504

摘要： A process for causing gaseous trace element particles to pass from a flowing hot gas into a fine particulate material by means of water. A mixture of the hot gas and water drops is caused to flow substantially upwards at such a velocity that the water drops remain in the gas flow and for a period long enough for most of the mass of the water drops to evaporate in order to cool the gas and to increase its relative humidity. After the gases have reached their wet temperature, they are brought into a turbulent state in order to cause the dust particles and the water drops which have decreased through evaporation to impinge against each other in order to produce in the aqueous film which covers the dust particles an exothermal ion reaction between the gaseous water-soluble trace element particles and the fine particles. Thereafter, the mixture is caused to flow further in order to evaporate the remaining water by means of the heat of reaction so that a dry end product is obtained.

公开(公告)号：US4788047A

公开(公告)日：1988-11-29

申请号：US795251

申请日：1985-11-05

申请人： Sirpa Hamala ,  Timo Kenakkala ,  Pentti Janka ,  Tuomo Ruohola ,  Martti Lehtimaki

发明人： Sirpa Hamala ,  Timo Kenakkala ,  Pentti Janka ,  Tuomo Ruohola ,  Martti Lehtimaki

IPC分类号： B01D53/14 ,  B01D53/50 ,  B01D53/75 ,  B01D53/81 ,  C01B17/60 ,  C01F11/46 ,  C01F11/48 ,  B01J8/00 ,  C01B17/00

CPC分类号： B01D53/508 ,  B01D53/501 ,  C01F11/464 ,  C01F11/48

摘要： The invention relates to a process and apparatus for causing the sulfur dioxide of flue gases to react to form solid sulfates and sulfites which can be separated from the flue gases. Sulfur dioxide containing flue gases (16) are directed according to the invention into one end of an oblong reaction zone (4), in addition to which pulverous calcium compounds and water are directed separately into the reaction zone at several points, and finally from the opposite end a flue gas suspension is withdrawn and directed to dust separation (5). By feeding the pulverous reagent and the water separately into the reactor 4, the problems involved in the preparing, handling and spraying of an aqueous slurry are avoided, in addition to which the retention time and the reaction conditions can be regulated easily in the oblong reactor 4.

摘要翻译： 本发明涉及使烟道气的二氧化硫反应形成固体硫酸盐和亚硫酸盐的方法和装置，其可以与烟气分离。 含有二氧化硫的烟道气（16）根据本发明被引导到长圆形反应区（4）的一端，此外，在多个点处将粉末状钙化合物和水分别导入反应区，最后从 相反的一端，废气悬浮液被抽出并且被引导到灰尘分离（5）。 通过将粉末试剂和水分别进料到反应器4中，避免了水性浆料的制备，处理和喷雾所涉及的问题，除此之外，在长圆形反应器中可以容易地调节保留时间和反应条件 4。

公开(公告)号：US5766566A

公开(公告)日：1998-06-16

申请号：US687539

申请日：1996-08-02

申请人： Harri Mattila ,  Timo Kenakkala ,  Olli Konstari

发明人： Harri Mattila ,  Timo Kenakkala ,  Olli Konstari

IPC分类号： C01G49/14 ,  C02F1/52

CPC分类号： C02F1/5245 ,  C01G49/14

摘要： The invention relates to a process of preparing ferric sulfate by forming a slurry which contains ferrous sulfate and sulfuric acid, the slurry containing bivalent iron in both the solution phase and the solid phase, and by oxidizing this slurry to form a ferric sulfate slurry. When so desired, the obtained ferric sulfate slurry is solidified to form solid ferric sulfate. The obtained ferric sulfate may, as such or dissolved in water, be used for the treatment of waste waters or for preparing pure tap water.

摘要翻译： PCT No.PCT / FI95 / 00045 Sec。 371日期：1996年8月2日 102（e）日期1996年8月2日PCT提交1995年2月2日PCT公布。 WO95 / 21128 PCT出版物 日期1995年8月10日本发明涉及一种通过形成含有硫酸亚铁和硫酸的浆料来制备硫酸铁的方法，所述浆料在溶液相和固相中含有二价铁，并且通过氧化该浆料形成 硫酸铁浆。 当需要时，将得到的硫酸铁浆料固化形成固体硫酸铁。 得到的硫酸铁可以原样或溶于水，用于处理废水或制备纯自来水。

公开(公告)号：US4985081A

公开(公告)日：1991-01-15

申请号：US486403

申请日：1990-02-28

申请人： Heikki Ahonen ,  Timo Kenakkala ,  Pertti Kokkonen

发明人： Heikki Ahonen ,  Timo Kenakkala ,  Pertti Kokkonen

IPC分类号： C04B7/26 ,  B01D53/50 ,  C04B18/06 ,  C04B18/08

CPC分类号： B01D53/501 ,  C04B18/064 ,  C04B18/08 ,  Y02W30/92

摘要： A method of producing cement or concrete, comprising the step of adding fly ash to the cement or concrete at the production stage, the fly ash containing lime and reaction products from the reaction occurring between lime and sulphur oxides in connection with the desulphuration of flue gases. To avoid the disadvantageous effects of calcium sulphite and entringite reactions and to increase the used amount of fly ash containing desulphuration waste, the calcium sulphite is oxidized by hydrogen peroxide either before the production of cement or concrete or during the production.

摘要翻译： 一种生产水泥或混凝土的方法，包括在生产阶段向粉碎水泥或混凝土中添加飞灰的步骤，含有灰分的飞灰和由石灰与硫氧化物之间发生的反应与烟气脱硫有关的反应产物 。 为了避免亚硫酸钙和堇青石反应的不利影响，并增加含有脱硫废物的飞灰的使用量，亚硫酸钙在生产水泥或混凝土之前或在生产过程中被过氧化氢氧化。