1
Mark J O Hara, Marion R Surgi: Immobilization of lead and cadmium in solid residues from the combustion of refuse using lime and phosphate. Wheelabrator Environmental Systems, Thomas K McBride, John F Spears Jr, Eugene I Snyder, April 12, 1988: US04737356 (69 worldwide citation)

Solid residues arising from the burning of solid wastes have lead and cadmium sufficiently insolubilized to pass the EPA toxicity test only where the pH in the EPA test is between 7.5 and 12.0. Addition of water soluble phosphate, especially phosphoric acid, increases the immobilization of lead and ...


2
Kenneth E Baldrey, Sharon Sjostrom, Nina Bergan French, Michael D Durham: Additives for mercury oxidation in coal-fired power plants. ADA ES, Sheridan Ross P C, February 28, 2012: US08124036 (25 worldwide citation)

The present invention is directed to an additive, primarily for combustion of low sulfur and high alkali coals, that includes a transition metal to impact positively bottom ash slag and optionally a halogen to effect mercury oxidation and collection in the flue gas.


3
George A Swan, Stephen D Challis: Recracking of cat naphtha for maximizing light olefins yields. Exxon Research and Engineering Company, James H Takemoto, December 8, 1998: US05846403 (20 worldwide citation)

A process for increasing the yield of C.sub.3 and C.sub.4 olefins by injecting light cat naphtha together with steam into an upstream reaction zone of a FCC riser reactor. The products of the upstream reaction zone are conducted to a downstream reaction zone and combined with fresh feed in the downs ...


4
William J Koves, Roger L Throndson, Kenneth D Peters: Radial flow reactor with double perforated scallops. UOP, Thomas K McBride, John G Tolomei, November 22, 1994: US05366704 (16 worldwide citation)

A fluid solid-contacting device eliminates the accumulation of deposits behind distribution collection conduits, reduces the differential expansion between the conduits and a containment vessel, and improves fluid distribution by extending the perforations into a back side of a distribution conduit ...


5
Kenneth E Baldrey, Sharon Sjostrom, Nina Bergan French, Michael D Durham: Additives for mercury oxidation in coal-fired power plants. ADA ES, Sheridan Ross P C, October 23, 2012: US08293196 (15 worldwide citation)

The present invention is directed to an additive, primarily for combustion of low sulfur and high alkali coals, that includes a transition metal to impact positively bottom ash slag and optionally a halogen to effect mercury oxidation and collection in the flue gas.


6
Philippe Blanchard, Jean Paul Klein: Process of obtaining a metal hydroxide powder and powder obtained by the process. October 29, 1996: US05569444 (15 worldwide citation)

A process of preparing a powder of metal hydroxides based on nickel hydroxide for an electrode of an electrochemical cell having an alkaline electrolyte. The process includes introducing a solution of salts of nickel and of cobalt and of cadmium and/or zinc into a reactor in a slow and continuous ma ...


7
Lawrence R Stowe: Method of conversion of heavy hydrocarbon feedstocks. Pravel Hewitt Kimball & Krieger, August 20, 1996: US05547563 (15 worldwide citation)

A method of conversion of a heavy hydrocarbon feed to a lighter hydrocarbon product. The method provides for adding to the heavy hydrocarbon feed a terpene, preferably d-limonene, an aromatic solvent, an aliphatic solvent, and a liquid catalyst including a free chloride ion source, a free nitrate io ...


8
John S Buchanan, Christopher G Smalley: Underflow cyclone with perforated barrel. Mobil Oil Corporation, Malcolm D Keen, Dennis P Santini, Richard D Stone, May 7, 1996: US05514271 (15 worldwide citation)

A cyclone and process for fluidized catalytic cracking of heavy oils is disclosed. Gas and entrained solids are added tangentially around a vapor outlet tube in a cylindrical tube cyclone body. Solids and some gas is withdrawn via a plurality of openings radially and longitudinally distributed in th ...


9
Jussi Kalevi Rastas, Tor Leif Johannes Huggare, Sigmund Peder Fugleberg: Hydrometallurgical process for the recovery of zinc, copper and cadmium from their ferrites. Outokumpo Oy, Brooks Haidt Haffuer & Delahunty, May 25, 1976: US03959437 (14 worldwide citation)

A hydrometallurgical method of recovering zinc, copper and cadmium from their ferrites so that the ferrites are treated under atmospheric conditions in sulphuric acid bearing solution in the presence of potassium-, sodium- or ammonium-ions, is disclosed, in which the treatment takes place in one sta ...


10
Brown Timothy J, Rickelton William Andrew, Boyle Richard J: Selective removal of metals from aqueous solutions with dithiophosphinic acids.. American Cyanamid Co, February 4, 1987: EP0210387-A1 (13 worldwide citation)

A process for the extraction of metals selected from the group consisting of zinc (II), silver (I), cadmium (II), mercury (II), nickel (II), cobalt (II), and copper (II) from an aqueous solution containing, in addition to said metals, metals selected from the group consisting of calcium (II) and mag ...