| Patents for F28G 9 - Cleaning by flushing or washing, e.g. with chemical solvents (1,594) |
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| 05/06/1986 | US4586961 Methods and compositions for removing copper and copper oxides from surfaces |
| 04/08/1986 | US4581074 Removing iron oxide deposits by purging with superheated steam andoxygen |
| 03/18/1986 | CA1201962A1 Method of removing scale |
| 02/26/1986 | EP0172244A1 Installation for cleaning heat exchange surfaces of storage masses in circulation regenerative heat exchangers. |
| 02/04/1986 | US4567940 Apparatus for carrying out physical and/or chemical processes, more specifically a heat exchanger of the continuous type |
| 01/28/1986 | US4566406 Sludge removing apparatus for a steam generator |
| 01/22/1986 | EP0168463A1 A device for heat recovering from flue gases |
| 01/02/1986 | EP0166190A2 Cleaning device for a regenerative heat exchanger |
| 11/05/1985 | US4551181 Corrosion prevention and cleaning of air-cooled heat exchangers |
| 09/24/1985 | US4543188 Apparatus for removing foreign matters from condenser cooling water |
| 09/04/1985 | EP0153685A1 Heat-transfer surfaces cleaning device for the intermediate body of a regenerative heat-exchanger |
| 08/29/1985 | WO1985003768A1 Installation for cleaning heat exchange surfaces of storage masses in circulation regenerative heat exchangers |
| 08/01/1985 | WO1985003339A1 A device for heat recovering from flue gases |
| 07/30/1985 | US4531571 Condenser targeted chlorination injection system |
| 05/02/1985 | EP0138924A1 Regenerative heat transfer system |
| 04/16/1985 | US4511407 Method of cleaning corroded metal articles by induction heating |
| 02/13/1985 | EP0132873A2 Apparatus for carrying out physical and/or chemical processes, more specifically a heat exchanger of the continuous type |
| 01/23/1985 | EP0132112A2 Sludge removing apparatus for a steam generator |
| 10/25/1984 | WO1984004154A1 Regenerative heat transfer system |
| 10/17/1984 | EP0121631A2 Method of removing scale |
| 08/28/1984 | CA1173335A1 Process for cleaning the scoria laden surfaces of an installation burning carbonaceous fuels |
| 08/01/1984 | EP0114444A2 Process and apparatus for indirect cooling of a hot gas |
| 06/26/1984 | US4456057 Heat exchanger |
| 06/12/1984 | US4454046 Boiler scale prevention employing an organic chelant |
| 04/24/1984 | CA1166131A1 Aqueous acid composition and method of use |
| 04/18/1984 | EP0105612A1 Improved boiler scale prevention employing HEDTA as a chelant |
| 02/07/1984 | US4430128 Aqueous acid composition and method of use |
| 01/31/1984 | US4428417 Heat exchanger cleaner |
| 11/23/1983 | EP0094910A1 Method and apparatus for cleaning heat exchangers |
| 11/15/1983 | US4415369 Portable; water pressurized; flushing |
| 09/06/1983 | US4402104 Device for the surface cleaning of rotating machine elements |
| 08/24/1983 | EP0086245A1 Aqueous acid metal cleaning composition and method of use |
| 08/02/1983 | US4396434 Process for cleaning surfaces fouled by deposits resulting from combustion of carbon-bearing substances |
| 06/14/1983 | USRE31274 Engine cooling system flushing apparatus and method |
| 04/27/1983 | EP0077729A1 Heat exchanger apparatus for a coal gasification system |
| 03/15/1983 | US4376443 Jet water cleaning apparatus |
| 03/15/1983 | CA1142913A1 Method for eliminating deposits in the heat- exchangers of low temperature installations |
| 02/15/1983 | US4374235 Used as epoxy curative, boiler scale removers, detergent builders, thickeners and coatings |
| 12/28/1982 | US4366003 Apparatus and process for the periodic cleaning-out of solids deposits from heat exchanger pipes |
| 11/30/1982 | US4361522 Automatic flushing and draining apparatus for evaporative coolers |
| 10/19/1982 | US4354872 Metal oxide oil slurries |
| 10/12/1982 | US4353753 Cleaning boiler tubes of digesting heat exchangers used in alum earth processing |
| 09/28/1982 | US4351654 Backflow flushing with warm gas |
| 09/28/1982 | CA1132410A1 Cleanable circumferentially finned heat exchanger |
| 07/13/1982 | CA1127578A1 Method for decoking fired heater tubes |
| 06/02/1982 | EP0053085A1 Method of cleaning surfaces soiled by deposits accrued during conbustion of carbon materials |
| 04/20/1982 | CA1122201A1 High energy wash of ljungstrom air preheaters |
| 03/31/1982 | EP0048327A2 Soot blower arrangement |
| 03/16/1982 | US4320528 Ultrasonic cleaner |
| 01/12/1982 | CA1116058A1 Method of cleaning fouled heat exchangers and other equipment |
| 01/05/1982 | CA1115626A1 Hydrolyzable tanning extracts followed by citric acid to remove iron oxide deposits from heat transfer surfaces |
| 12/29/1981 | US4308076 Passing sour water having ph over 8 from storage means through stripped water pathway to remove sulfur deposits |
| 11/24/1981 | CA1112962A1 Soot blower |
| 11/10/1981 | US4299272 Industrial heat pipe energy recovery package unit |
| 10/27/1981 | US4297147 High-speed propulsion of a gas having entrained nonabrasive particles; decarbonization |
| 10/27/1981 | CA1111412A1 Industrial heat pipe energy recovery package unit |
| 10/06/1981 | US4293031 Engine cooling system flushing apparatus and method |
| 09/22/1981 | CA1109456A1 Modular heat exchanger with pivotal cores |
| 08/26/1981 | EP0034199A1 Method and device for cleaning the flue gas side of boilers or furnaces |
| 08/18/1981 | US4284421 Air-cleaning apparatus |
| 08/11/1981 | US4282923 Regenerative heat exchange systems |
| 08/04/1981 | CA1106357A1 Process for the cleaning of fouled heat exchangers and other equipment |
| 08/04/1981 | CA1106266A1 Method for removing water-soluble inorganic salts and ice from heat exchanger surfaces |
| 06/23/1981 | US4274845 Kitchen exhaust of restaurant |
| 06/10/1981 | EP0029933A2 Apparatus and method for the periodical cleaning of heat exchanger tubes of solid deposits and use of this apparatus |
| 03/25/1981 | EP0025634A2 Method and apparatus for cleaning the basket section of an air preheater |
| 03/24/1981 | US4257819 In a boiler, by pressurization of liquid, heating liquid, and causing to boil by reduction in pressure |
| 03/17/1981 | US4256511 High energy wash of ljungstrom air preheater |
| 12/09/1980 | US4237962 Self-cleaning heat exchanger |
| 10/28/1980 | US4229852 Portable pipe cleaning apparatus |
| 10/01/1980 | EP0016515A1 Method of cleaning fouled heat exchangers and other chemical processing equipment |
| 06/25/1980 | EP0012508A2 Process for the cleaning of fouled heat exchangers and other process equipment |
| 05/27/1980 | US4204503 Fluid dynamic soot blower system |
| 05/20/1980 | US4203778 Using nonabrasive particles entrained in a gas |
| 03/04/1980 | US4191588 Solution of an alkyl aluminum halide and hydrocarbon to remove suldge containing a cuprous halide |
| 02/26/1980 | US4190463 Method of removing iron oxide deposits from heat transfer surfaces |
| 01/01/1980 | US4181536 Ammonium chloride, sludge from cuprous aluminum tetrahalide and aromatic hydrocarbon |
| 10/23/1979 | US4171988 Ammonia-epichlorohydrin copolymers reacted with chloroacetic acid |
| 09/11/1979 | US4167100 Method for removing water-soluble inorganic salts and ice from heat exchange surfaces |
| 07/24/1979 | US4161979 Method of and apparatus for flushing an automobile cooling system |
| 05/29/1979 | CA1055479A1 Descaling of heat exchanger |
| 05/29/1979 | CA1055478A1 Method and means for cleaning the heat exchanging surfaces of the heat transfer plates of rotary regenerative heat exchangers |
| 04/03/1979 | CA1051867A1 Apparatus and method for cleaning the heat exchanging surfaces of the heat transfer plates of a rotary regenerative heat exchanger |
| 03/13/1979 | US4143702 Reverse flow heat exchangers |
| 02/27/1979 | US4141754 Apparatus and method for cleaning the heat exchanging surfaces of the heat transfer plates of a rotary regenerative heat exchanger |
| 01/23/1979 | US4135534 Multi-nozzle multiple lance for washing rotating heat exchangers and a distributor for said lance |
| 08/22/1978 | US4108680 Process for removing calcium oxalate scale |
| 07/11/1978 | US4099984 Process for cleaning fouled heat exchangers |
| 02/28/1978 | US4076072 Modular heat exchanger with pivotal cores |
| 07/05/1977 | US4033407 Heat exchanger cleaning system |
| 05/24/1977 | US4025362 Apparatus for cleaning the heat exchanging surfaces of the heat transfer plates of rotary regenerative heat exchangers |
| 03/29/1977 | US4014383 Method of heating heat exchanger unit |
| 12/07/1976 | US3996062 Polyphosphonic acids |
| 09/28/1976 | US3982588 Grease-collecting heat exchanger installation |