Class 95/9 - pH sensed

Subclass of Class 95 - Gas separation: processes
Definition: Process in which pH or a change therein is detected and
No. of patents: 26
Last issue date: 07/13/2010

Number	Title	Issue Date
7753990	Aerated degasser The present invention provides a system for reducing entrained and dissolved gasses from a well fluid. The system includes a well fluid, at least one process tank into which the well fluid flows, wherein a first process tank comprises a weir arrangement over which t...	07/13/2010
7402192	Method and device for continuously treating waste water of industrial origin by water vapour stripping The invention concerns a method characterised in that it consists in: determining online at least an ultraviolet spectrum portion of at least one of the compounds present in one or the other of the waste water feeding circuits (7, 13) or of the column (8	07/22/2008
7323294	Photographic colour material containing a resorcinol derivative as black coupler A color photographic material is disclosed comprising a black image forming coupler substituted in the 2, 4 and/or 6 position shown by formula (I) or formula (II), where in LINK represents a divalent linking group, BALL represents a group that prevents the coupler f...	01/29/2008
7282081	Method and apparatus for high efficiency multi-stage packed tower aeration with PH adjustment and reutilization of outlet air Disclosed is an improve aeration system. The aeration system of the present invention more efficiently removes contaminates, such as hydrogen sulfide, from water. The increased efficiency is achieved by adjusting the pH level of the water in between sequential mass ...	10/16/2007
7252703	Direct contact liquid air contaminant control system The direct contact liquid air contaminant control system and method to revitalize air by removal of carbon dioxide and other trace gas contaminants use a direct contact air, liquid scrubber element and stripper element. The scrubber element has two rotor elements ro...	08/07/2007
7147925	White, steam-sterilizable and extrusion-coatable polyester film The invention relates to a single- or multilayer, white, biaxially oriented polyester film. Films of the invention are formed from thermoplastic polyester and are coated on at least one side with a water-soluble adhesion-promoting layer that includes a hydrolyzed am...	12/12/2006
7141307	Extrusion-coatable polyester film comprising poly(m-xyleneadipamide) Polyester films which comprise not only thermoplastic polyester, e.g. polyethylene terephthalate, but also from 5 to 45% by weight of poly(m-xyleneadipamide) and optionally from 0.02 to 1% by weight of fillers, and which have, on at least one surface, an adhesion-pr...	11/28/2006
7132008	Natural gas dehydration apparatus A process and corresponding apparatus for dehydrating gas, especially natural gas. The process includes an absorption step and a membrane pervaporation step to regenerate the liquid sorbent. ...	11/07/2006
7097689	Process and system for purifying gases A process and system for purifying an impure gas to produce a purified gas in a gas purification system and protecting the system from damage by a) passing a portion of a first gas stream into a reactor vessel, which exits as a second purified gas stream; b) combini...	08/29/2006
7014689	Body for isolating a constituent contained in a gas mixture The invention relates to bodies for separating out a component contained in a gas mixture. The gas mixtures may, for example, be crude gases which contain hydrocarbons, such as natural gas, or exhaust gas. According to the object which is set, the bodies according t...	03/21/2006
6951672	Chemically-modified coatings for enhanced performance of ink-jet images Ceramic pigment-based, chemically-modified porous coatings can be used for enhancing image permanence of ink-jet image printing. Specifically, a porous coated media sheet, comprising a media substrate, having a porous coating coated thereon comprising a modified cer...	10/04/2005
6325983	Nox scrubbing system and method A treatment system for process exhaust streams containing NOx. The system includes a plurality of sequential scrubbing assemblies that collectively receive and contact a process exhaust stream containing NOx and a water stream to produce a product exhaust...	12/04/2001
6306197	Isopropyl alcohol scrubbing system A system and method for treating process gas streams containing isopropyl alcohol (IPA) to reduce the concentration of IPA therein. The invented system includes a scrubber unit that receives a process stream containing a concentration of IPA and reduces t...	10/23/2001
6190629	Organic acid scrubber and methods A scrubber assembly for removal of water soluble and/or alkaline gases from an exhaust stream uses a scrubber mixture contained within at least one scrubber vessel. Preferably the scrubber mixture include a liquid phase including an aqueous acid solution,...	02/20/2001
5772731	Treatment of liquors A process of removing carbon dioxide from a liquor in a vessel comprises the step of continuously passing a portion of the liquor into a sidestream and introducing discrete bubbles of between 0.005 mm and 1.0 mm diameter of nitrogen rich gas into the liqu...	06/30/1998
5720926	Apparatus for removing a contaminant from a gas An apparatus for removing a contaminant from a gas effluent. The apparatus comprises an absorption tower in which is placed a suitable packing where the gas effluent and contaminant-absorbing liquid contact one another. A recirculation path transfers spen...	02/24/1998
5643797	Process of continuously controlling the pH of an acid liquid including measuring the pH continuously with a glass electrode The method of continuously controlling pH of an acid scrubbing liquid includes continuously withdrawing a constant partial stream from the scrubbing liquid; continuously measuring a pH in the partial stream with a glass electrode; adding base at a first r...	07/01/1997
5484471	Venturi scrubber and method of using the same An air pollution control system incorporating a venturi scrubber and a method of cleansing a particulate-laden, contaminated gas flow are disclosed. Spray nozzles are used to introduce optimized droplets of a scrubbing liquid into the venturi to maximize ...	01/16/1996
5246594	Process for controlling the pH value of an acid scrubbing liquid The acid scrubbing liquid which has a pH value below 3 and is used in a scrubbing zone to remove acid components from a gas. At least part of the scrubbing liquid is circulated. A partial stream of the scrubbing liquid at a constant rate is mixed with an ...	09/21/1993
5224972	Coatings with controlled porosity and chemical properties Coatings and sensors having both steric and chemical selectivity. Controlled porosity provides the steric selectivity, whereas chemically tailored film properties, using controlled composition or modification by coupling agents, chemical species replaceme...	07/06/1993
5084184	Positive focusing in a magnetically stabilized fluidized bed A process of positive focusing of a component of a feedstream in a magnetically stabilized fluidized bed which comprises: (a) providing in a column a bed of magnetizable adsorbent solids for which the component has an affinity, the bed descending counterc...	01/28/1992
5076818	Gas cleaning methods and apparatus Particulates, oxides of nitrogen and sulfur and other air-polluting burdens are separated and removed from gas streams to be discharged to the atmosphere in compliance with the strictest regulations by precooling, scrubbing and neutralizing and cleaning o...	12/31/1991
4853002	Process for removing hydrogen sulfide from waste water Hydrogen sulfide is removed form a water stream comprising hydrogen sulfide and a high concentration of a Group IIA metal component such as magnesium and calcium components by maintaining the water stream at a specific acidic pH range and a specified temp...	08/01/1989
4507129	Method of cleaning dust-containing gas mixtures from a urea plant Gas mixtures from a urea plant, particularly such mixtures containing dust and especially off-gases from prilling towers or granulation units are cleaned. In order to prevent precipitation and accretion in the cleaning unit, there is applied an aqueous wa...	03/26/1985
4323371	Method and arrangement for treating gaseous combustion products A method for treating gaseous combustion products, in particular, combustion products containing sulphur dioxide and smoke gases. The combustion products are led to a scrubber in which they are brought into contact with scrubbing water, into which a base,...	04/06/1982
4104038	Desorption of volatile compounds dissolved in a liquid phase Volatile compounds are desorbed from an aqueous liquid containing ammonia, by means of a stripping column. The aqueous liquid is supplied to the upper part of the column and a gaseous mixture including free oxygen is blown into the lower part of the colum...	08/01/1978

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Class 95/9 - pH sensed