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separately into the reaction zone at several points, and finally from the opposite end a flue gas suspension is withdrawn and directed to dust separation (5).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。