4465593 Recovery of metal from waste water by chemical precipitation

4465593 Recovery of metal from waste water by chemical precipitation

iv New Patents 4465585 4466946 CHOLESTERIC MESOPHASE PITCH CO2 REMOVAL FROM HIGH CO2 CONTENT HYDROCARBON CONTAINING STREAMS Irwin C Lewis assign...

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iv

New Patents

4465585

4466946

CHOLESTERIC MESOPHASE PITCH

CO2 REMOVAL FROM HIGH CO2 CONTENT HYDROCARBON CONTAINING STREAMS

Irwin C Lewis assigned to Union Carbide Corporation A cholesteric mesophase pitch is disclosed along with methods for producing the same.

4465593 RECOVERY OF METAL FROM WASTE WATER BY CHEMICAL PRECIPITATION

Clifton S Goddin, Edward Turek, Boyd George assigned to Standard Oil Company (Indiana) Carbon dioxide is removed from CO2 and hydrocarbon containing gaseous streams. In the instance where the hydrocarbons and CO2 are such that hydrocarbons would condense out during CO2 removal, the gas stream is treated in one or more stages to accomplish hydrocarbon composition control.

4467768 Mark F Wemhoff assigned to Environmental Technology (U S ) Inc Metals are removed from waste water by chemical precipitation and filtration. The system is controlled by a control system responsive to an ion specific electrode and a pH responsive electrode in a manifold that recycles filtrate to a reaction tank where precipitation occurs.

4466359 DISC STABILIZED FLAME AFTERBURNER Roy Weber, Bruce Huddleston Industrial pollution is directed into an afterburner conduit. An air cooled conical bluff body positioned in the conduit near the entrance acts as a flow condensing element. A recirculation zone consists of a toroidal vortex adjacent the downstream edge of the bluff body. In the zone, flow is reversed and particles in the reversed flow are reintroduced into the afterburner flow. A ring of burners located near the midpoint of the bluff body heats the gas stream flowing past the bluff body to near auto-ignition temperature. A second ring of burners located downstream of the bluff body assists in the establishment of a stabilized flame downstream of the bluff body. Air is heated as it flows through tubes wrapped around the conduit. The heated air is introduced tangentially to the afterburner flow by air injectors positioned downstream of the bluff body and downstream of the second ring of burners.

ELECTRONIC FUEL INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE Denis M P P Lebas, Jean B G H Leprince, Miche Touly, Grand Couronne, France assigned to Shell Internationale Research Maatschappij B V The device comprises a control system (100) commanded by sensing means consisting of at least one optic fibre transmitting a radiation to at least one radiation detector, said sensing means co-operating with a rotating element driven by the engine, which consecutively intercepts the receipt of the radiation. The control system (100) determines the beginning and duration of injection at the injectors (11) incorporated in the fueltransfer circuit (10), which circuit comprises two pipes, namely a fuel inlet pipe (19) and a fuel outlet pipe (20) which are interconnected and in heat exchange relation and are located at the back of each injector in order to obtain a closed transfer circuit and to ensure continuous circulation of fuel at the back of each injector, thus avoiding inline vaporization of said fuel.

4468011 DEVICE FOR THE RECOVERY OF MERCURY Ake Sikander, Ake Bjorkman, Gunthe Jonsson, Karlskrona, Sweden assigned to Lumalampan Aktiebolag This process enables the recovery of mercury from waste containing plastic material, e.g. bat-