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| Number | Title | Issue Date |
| 7179385 | Method for treating paint booth water systems The invention is a composition and method for treating paint booth water systems to facilitate paint removal. The composition comprises water, solid particles of insoluble organic polymer, such as, by way of non-limiting example, urea methanal copolymer, preferably ... | 02/20/2007 |
| 6942840 | Method for removal and stabilization of mercury in mercury-containing gas streams The present invention is directed to a process and apparatus for removing and stabilizing mercury from mercury-containing gas streams. A gas stream containing vapor phase elemental and/or speciated mercury is contacted with reagent, such as an oxygen-containing oxid... | 09/13/2005 |
| 6638432 | Method of treating waste liquid Disclosed is a method of removing heavy metals contained in exhaust gas which has been generated by burning a waste liquid containing the heavy metals discharged in a process of producing organic compounds. The method includes the steps in the order of: (... | 10/28/2003 |
| 6627086 | Methods of producing polyarylamines and using them for detackifying paint and removing color from aqueous systems Aqueous suspensions of paints in waste waters can be treated to detackify the paint and facilitate its removal by contacting the paint suspension at a pH of from about 5 to about 14 with a polyarylamine that is produced by reacting an aldehyde with an ary... | 09/30/2003 |
| 6409802 | Method for preventing scaling in wet-process waste gas treatment equipment A method for preventing scale formation in a wet type exhaust gas treating apparatus is disclosed. An exhaust gas is contacted with a washing liquid containing water. The washing liquid contains at least one chelating agent which reacts with ions becoming... | 06/25/2002 |
| 6228269 | Methods for treating wastewater containing hard-to-filter solids, in particular photoresist and paint sludges Wastewater streams containing tacky or sticky components and heavy metals, such as photoresist-containing streams from printed-circuit board manufacture and water streams from paint spraying processes, can be detackified and the metals simultaneously remo... | 05/08/2001 |
| 6162284 | Separator for gases, liquids and solids from a well The invention relates to an apparatus and method for use in well drilling, for separating rock cuttings, gas, water, drilling mud, gases, or foam which may be part of the drilling fluid returning from a bore hole. The apparatus has a plurality of compartm... | 12/19/2000 |
| 6136220 | Compositions for treating paint spray booth water Methods and compositions for detackifying and dispersing, and coagulating/flocculating and dispersing solventborne and waterborne paints, respectively, in paint spray booth waters are disclosed. An aqueous composition of water soluble cationic polymer, no... | 10/24/2000 |
| 5985154 | Methods and compositions for treating paint spray booth water Methods and compositions for detackifying and dispersing, and coagulating/flocculating and dispersing solventborne and waterborne paints, respectively, in paint spray booth waters are disclosed. An aqueous composition of water soluble cationic polymer, no... | 11/16/1999 |
| 5897689 | Method for binding resin and tar substances in wet-cleaning and wet precipitation systems A method and apparatus are provided for binding emulsified resin and tar substances in circulating water of a wet-cleaning and wet precipitation system for waste gas produced in the wood industry. Wood dust is metered into the circulating water and receiv... | 04/27/1999 |
| 5893943 | Method and apparatus for decreased undesired particle emissions in gas streams The present invention discloses a process for removing undesired particles from a gas stream including the steps of contacting a composition containing an adhesive with the gas stream; collecting the undesired particles and adhesive on a collection surfac... | 04/13/1999 |
| 5614102 | Method for purifying sewage A sewage purification method which includes a first step in which at least two kinds of flocculants are introduced in sewage for stirring and mixing therewith so as to float and settle inorganic and organic materials. The first step is sequentially repeat... | 03/25/1997 |
| 5562833 | Dual feed paint detackification program In a paint spray booth wherein water is used to collect oversprayed paint, a process is disclosed for detackifying and coagulating oversprayed paint by the independent and concurrent addition of specific amounts of specific anions and cationic polymers to... | 10/08/1996 |
| 5547587 | Process for denaturing and coagulating paints The invention is an improved process for denaturing and coagulating paint in an aqueous medium in which denatured and coagulated paint must remain in a dispersion in the aqueous medium. The aqueous medium contains a coagulant and the aqueous medium is mai... | 08/20/1996 |
| 5407647 | Gas-scrubber apparatus for the chemical conversion of toxic gaseous compounds into non-hazardous inert solids A gas-scrubber apparatus, including a chamber having an inlet means for receiving polluted gases to be scrubbed and having outlet means through which scrubbed gases are discharged, and heating elements for heating the chamber to maintain the polluted gase... | 04/18/1995 |
| 5352366 | Method for purifying liquid fuel boiler smoke by cooling and washing the smoke and neutralizing the effluents To purify smoke from a liquid fuel (in particular heavy fuel oil) boiler by eliminating unwanted components including acids, the smoke, before it is exhausted to the atmosphere, is caused to pass along a vertical path in a heat exchanger adapted to recove... | 10/04/1994 |
| 4948513 | Method for controlling overspray in paint spray booths A novel polymer and treatment scenario which considerably improves detackification of paint overspray consisting of high solids enamel, epoxy resin, or polyurethanes in the wash water or paint spray booths is disclosed comprised of: (i) a hydrophilic-lipo... | 08/14/1990 |
| 4937003 | Lyophobic detackifiers A process for detackifying and coagulating paint in a wet paint spray booth wherein water is used to wash the air containing oversprayed paint from the paint spray operation. The process comprises forming stable colloid solutions consisting of weakly elec... | 06/26/1990 |
| 4935149 | Low free formaldehyde melamine-formaldehyde detackifier and method of using A melamine-formaldehyde detackifer having a less than 0.15% free formaldehyde which comprises a melamine-formaldehyde polymer detackifier to which has been added a formaldehyde scavenging agent selected from an effective amount of urea, acetylacetone, and... | 06/19/1990 |
| 4933091 | Process for coagulating lacquers and the like Removal of wet overspray from lacquer or similar water insoluble coatings by predominantly aqueous cleaning liquids is improved by including in the cleaning liquids as a coagulation agent a salt of a copolymer of ethylene and acrylic acid that contains 8 ... | 06/12/1990 |
| 4913825 | Method for controlling overspray in paint spray booths A novel treatment scenario which considerably improves detackification of paint overspray consisting of undiluted high solids enamel, epoxy resin or polyurethanes in the wash water of paint spray booths is disclosed, comprised of (i) a dialkylamine-epihal... | 04/03/1990 |
| 4759777 | Decontamination of wood chip dryer gas A method is provided for the decontamination of wood chip dryer flue gas containing wood particles and hydrocarbons which comprises contacting hot flue gas with an aqueous quench liquid to produce a wood particle-containing liquid and a hydrocarbon-contai... | 07/26/1988 |
| 4699730 | Magnesium sulfate and complex silicate mineral paint denaturant The paint denaturant composition of this invention includes mixing magnesium sulfate with complex silicate minerals. The complex silicate minerals disclosed include bentonite clay, kaolin clay, and diatomite preferably a mixture thereof. The paint denatur... | 10/13/1987 |
| 4637824 | Paint detackification method Paint spray booth wastes which have been collected in a water wash are easily detackified and removed from the wash water by adjusting the pH of the wash water to a pH of about 7.0 to 12.0 with an alkali metal silicate and contacting the paint wastes in t... | 01/20/1987 |
| 4629572 | Paint detackification method Paint spray booth wastes from clear oil-based coating compositions, such as lacquers, which have been collected in a water wash are easily detackified and removed from the wash water by contacting the wastes in the wash water with (1) a water-dispersible ... | 12/16/1986 |
| 4629477 | Coagulating compositions containing a cyanamide component for coagulating lacquers, waxes and coating compositions The invention relates to coagulating compositions for coagulating lacquers, waxes and coating compositions, more especially two-component polyurethane lacquers, which contain a mixture of cyanamide and/or dicyanodiamide and/or calcium cyanamide in an amou... | 12/16/1986 |
| 4569682 | Process for removing solids from a gas containing the same An electrically resistive flocculating agent is added to electrically conductive solid fines recovered from an electrofiltration zone. The dry flocculated solid fines including the flocculating agent are recycled to the electrofiltration zone in which a g... | 02/11/1986 |
| 4496374 | Compound and process for denaturing high solids paints An improved composition and process for denaturing or "killing" captured high-solids paint particles in aqueous wash solutions employed in gas scrubbing devices such as paint spray booths for extracting entrained particulated contaminants from the exhaust... | 01/29/1985 |
| 4317806 | Method and apparatus for dedusting and absorption of contaminating gases being the exhaust gases of waste-incinerating devices and hot-air cupola furnaces The invention relates to a method for dedusting and absorption of contaminating gases in exhaust gases of waste-incinerating devices and hot-air cupola furnaces. In the essence, mud-containing circulation water is atomized in the exhaust gas, whereby dry ... | 03/02/1982 |
| 4083703 | Processing of gas streams Method and apparatus for removing material from a gas stream. The gas stream with entrained material is moved downwardly through a filter bed of loose filtering solids of not more than 1.4 millimeter size, simultaneously with the passage of liquid downwar... | 04/11/1978 |
| 4070162 | Method of agglomerating particles in gas stream The separation characteristics of particles entrained in a particle-laden gas for separation by the commonly used methods for removing particles from a gas stream are improved by injecting finely divided urea into the gas stream prior to its passage throu... | 01/24/1978 |
| 4055404 | Process for collecting paint spray mists in spray paint operation An improvement in a process for the separation of aqueous paint spray mists from the environment of a paint spray operation employing a water rinse technique is described. According to the improvement, rinse water is mixed with a water-soluble, substantia... | 10/25/1977 |
