1
Kari Kokkonen, Seppo Tuominiemi, Hannu Alppi, Timo Kenakkala: Process for the removal of sulfur dioxide from hot flue gases. Oy Tampella, Dressler Goldsmith Shore Sutker & Milnamow, March 26, 1991: US05002743 (16 worldwide citation)

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 ...


2
Sirpa Hamala, Timo Kenakkala, Pentti Janka, Tuomo Ruohola, Martti Lehtimaki: Process for causing the gaseous sulfur compounds of flue gases to react to form solid compounds which can be separated from the flue gases. Oy Tampella, Cushman Darby & Cushman, November 29, 1988: US04788047 (12 worldwide citation)

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 ...


3
Harri Mattila, Timo Kenakkala, Olli Konstari: Process for preparing ferric sulfate. Kemira Pigments Oy, Kemira Chemicals Oy, Gary A Nath & Associates Nath, June 16, 1998: US05766566 (4 worldwide citation)

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 ...


4
Heikki Ahonen, Timo Kenakkala, Pertti Kokkonen: Method of producing cement or concrete. Oy Iampella, January 15, 1991: US04985081 (1 worldwide citation)

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 avo ...


5
Simo Jokinen, Stefan Jäfverström, Timo Kenakkala: Process for preparing usable products from an impure ferric sulfate solution. Kemira Chemicals OY, Greenberg Traurig, August 7, 2001: US06270738

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


6
Sirpa Hamala, Matti Heikkila, Jouko Laine, Kari Kokkonen, Timo Kenakkala: Process for removing a constituent from a hot gas stream by exothermic ionic reaction of the constituent with a reactant provided in fine particulate form. Oy Tampella, Cushman Darby & Cushman, May 22, 1990: US04927613

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 lo ...


7
Heikki Ahonen, Pertti Kokkonen, Timo Kenakkala: Method of producing cement or concrete. Oy Tampella, CHEN XIUZHUANG, September 26, 1990: CN90101388

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 avo ...