A monolithic, fired ceramic gas diffuser for injecting gas into a molten metal bath, including a first portion, a second portion integrated with the first portion, and a bore passing through the first portion and communicating with the second portion for supplying gas to the second portion, wherein at least the second portion has a network of interconnected pores that provides preferential gas flow from the bore through the second portion to inject gas into the molten metal bath.

Monolithic ceramic gas diffuser for injecting gas into a molten metal bath

A dishwasher is provided that allows oxygenating gases, especially ozone, to be effectively used at least for cleaning and disinfecting An oxygenating gas is added to the rinsing liquor or the crude water and/or the washing container for use in a partial program cycle having a cleaning effect, eg the “cleaning” cycle, in order to be able to use the gas at least for cleaning and disinfecting

Dishwasher using ozone

An apparatus (10) for dissolving a gas into a fluid which may contain at least one dissolved gas. The apparatus (10) includes a first vertically oriented tube (2) defining a first inner space (32) and a second vertically oriented tube (12). The space between the first and second tubes is referred to as the second inner space (40). The gas is introduced through an inlet (18) into the second inner space (40). The apparatus (10) includes an acceleration device (20) for accelerating the flow of fluid through the second inner space (40). The apparatus includes a helix-shaped bubble harvester (22) which removes fugitive (undissolved) bubbles from the fluid flow and returns them to the second inner space (40) to increase the probability that those bubbles will be dissolved into the fluid.

Gas dissolving apparatus and method

The invention relates to a method for production of a porous ceramic body and a corresponding ceramic body which finds application, in particular, as filter, or filter membrane in cross-flow filtration. According to the invention, a bimodal ceramic powder mixture is moulded to give a moulded body, then subsequently recrystallised by curing at high temperature, such that the fine particles melt and link the large particles together by deposition thereon, such that, in defined regions (2, 3), a porous ceramic body with a homogeneous structure of almost uniform particle size and pore size is formed, whereby the pores provide an interconnected, open, three-dimensional network.

Porous ceramic body and method for production thereof

The present invention provides systems and methods for facilitating contact between a liquid and a fluid. Such systems and methods may allow efficient removal of components from the liquid without using undesirable reducing agents. In this regard, the disclosed embodiments provide for the purification of a liquid by passing the liquid and a fluid through a porous medium. The porous medium facilitates mixing of the liquid and the fluid. A partial pressure differential of the component between the liquid and the fluid facilitates the transfer of the component from the liquid to the fluid in the mixed liquid and fluid. One embodiment of the invention relates to a method of purifying a liquid. The method includes passing a liquid, such as a fuel, and a fluid, such as a non-reactive gas, through a porous medium, the liquid containing a component, such as oxygen gas, therein. The passing causes mixing of the liquid and the fluid and transfer of at least some of the component from the liquid to the fluid. The method also includes separating the liquid and the fluid, the separated fluid including at least some of the component. In addition, the present invention provides systems and methods for catalytically interacting one or more reactants and uses thereof, such as removing contaminants, or components, from or adding supplements to liquids. The contaminants may be undesirable components to be removed from a liquid, and supplements may be desired component or components to be added to the liquid, for example, each of which is referred to herein as 'component'. The method for the catalytic conversion of a plurality of reactants to produce one or more products therefrom includes passing the plurality of reactants through a catalytically active porous medium, the passing causing mixing of the plurality of reactants and chemical conversion of one or more of the reactants, thereby producing one or more products therefrom.

Contacting systems and methods and uses thereof

A gas diffuser assembly adapted for location in a volume of liquid or semiliquid material for dispersing minute bubbles of gas into the liquid. The assembly includes a housing formed of dense impermeable ceramic material and which defines an upwardly facing recess. A fitting formed of an inert material is located in the floor of the recess for connection to a gas supply tube. A diffuser element formed of porous ceramic material is secured to the housing over the recess to define an enclosed gas chamber. The diffuser disk and the housing are adhered together with a suitable cement.

Ceramic diffuser assembly

A porous refractory product suitable for use in filtering high temperature combustion products. The product includes a matrix of recrystallized silicon carbide formed by heating a cast preform containing relatively coarse silicon carbide crystals selected to produce the desired permeability, and relatively fine silicon carbide crystals to a temperature of at least 2320° C. At this temperature, the relatively fine silicon carbide crystals sublime and condense on the relatively large crystals. This results in recrystallization of the cast preform to form the porous matrix with the desired permeability.

Philip S. Way

Papers

Ceramic diffuser assembly

High temperature ceramic filter