Christ Water Technology Ag

Universitãt Stuttgart

Univeritaet Stuttgart

Grigorios Kolios

Jürgen Johann

Monique Bissen

Gerhart Eigenberger

Gerhard Friedrich

Frank Opferkuch

Thomas Menzel

Clemens Merten

Andreas Freund

Jens Bernnat

Volker Schmeisser

Ute Tuttlies

Andreas Müller

Andreas MÜLLER

A process of producing ultrapure water includes passing a water stream through a plurality of treatment stages in which inorganic and organic species which are present in the water are separated from the water stream; and adding an aqueous hypobromite solution to the water stream in at least one of the stages.

Treatment of water with hypobromite solution

A total evaporator for fluids, including a cold chamber to prevent pre-evaporation, an evaporation region connected thereto having narrow flow cross-section for fast evaporation of the fluid, and a subsequent vapor chamber for pulsation damping and the controlled superheating of the vapor, the evaporation region being formed by a gap between concentrically nested cylindrical and/or conical tube sections and heat required for the evaporation and superheating processes is supplied by electric heating and/or by hot fluid and/or by catalytic or homogeneous combustion via the wall of the concentric tubes.

Compact total evaporator and device for carrying out the controlled drying, evaporation and/or reaction of a number of fluids

A process for controlled conversion of at least two gases which form ignitable and/or explosive mixtures with one another, in which the gases are absorbed either separately or together in a carrier liquid which is inert in relation to the gases; the carrier liquid with the absorbed gases is fed to a degasser which comprises a closed degassing vessel () which comprises at least one feed line for the gas-laden carrier liquid () and at least one gas outlet () at its upper end, and also one or more drains for the carrier liquid below the feed line for the carrier liquid and in each case connected to a drain pipe (), and in such a manner that the liquid flow rate in the degassing vessel () is less than 0.2 m/s, the gas mixture is removed from the carrier liquid in the degasser and, after leaving the degasser and optional drying, is reacted in a reaction zone; characterized in that the drain pipes () are designed as a closed riser line up to a height level between the exit cross section of the gas outlet from the degassing vessel () and the lowermost level of the reaction zone, and there is pressure equalization between gas outlet () and drain pipes () in this level region. Also described are suitable apparatus for performing the process and specific uses of the apparatus.

Conversion of explosive gas mixtures

In a method for purifying exhaust gases in particular from lean-burn internal combustion engines having an exhaust-gas converter with a heat exchanger and catalysts arranged in inflow and/or outflow passages, the heat exchanger exhaust gas which flows in is heated by heat exchange with exhaust gas which flows. The incoming exhaust gas enters the inflow passages without encountering any obstacle susceptible to blockages, and flows through the inflow passages to a diversion region. Heat is fed to the exhaust gas by means of a burner. The burner is operated with fuel, air and engine exhaust gas in such a way that it supplies either an oxidizing or a reducing exhaust gas. Burner exhaust gas is admixed to the gas which emerges from the inflow passages and, together with this gas, enters the outflow passages, where nitrogen oxides are removed from it by a deNOxing catalyst present in the outflow passages.

Method and apparatus for purifying exhaust gases

Growing community of inventors

Lörrach, Germany

Grigorios Kolios