| Patents for F28G 9 - Cleaning by flushing or washing, e.g. with chemical solvents (1,594) |
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| 11/27/1991 | CN1014929B Controllable method and apparatus for rapping dirt on heat exchanging surface |
| 10/15/1991 | CA1290742C Heat generator |
| 09/11/1991 | CN2084588U Rotary medicine adding device |
| 09/03/1991 | US5044424 Heat generator |
| 08/28/1991 | CN2083719U Two-time water supply synchronous medicine feeding machine for heat exchange system |
| 08/07/1991 | EP0440465A1 Method and apparatus for removing foreign matter from heat exchanger tubesheets |
| 08/06/1991 | US5037483 On-line iron clean-up |
| 08/02/1991 | CA2035421A1 Method and apparatus for removing foreign matter from heat exchanger tubesheets |
| 07/31/1991 | CN1013359B Method of removing boiler scales |
| 07/30/1991 | CA2018153A1 On-line iron clean-up |
| 07/03/1991 | EP0435486A2 System and method for loosening and removing sludge and debris from the interior of a vessel of a heat exchanger |
| 06/27/1991 | CA2032756A1 System and method for vertically flushing a steam generator during cleaning operation |
| 06/19/1991 | CN2079275U Synchronous medicine feeding machine for hot exchanging system two-time water addition |
| 06/12/1991 | CN1012840B Method for cleaning inner surface of heat transfering tube of heat exchanger |
| 06/05/1991 | EP0430306A1 Mobile articulatable tube bundle cleaner |
| 06/04/1991 | US5021096 Circulating aqueous solution of hydroxyacetic acid and polysaccaride gum to form gel-sludge; dissolving with citric acid; heat exchangers |
| 05/28/1991 | US5019329 System and method for vertically flushing a steam generator during a shock wave cleaning operation |
| 05/28/1991 | US5018544 Apparatus for cleaning heat exchanger tube bundles |
| 04/17/1991 | CN2075332U High-pressure jet-flow cleaner for external surface of heat-exchanger tubulation |
| 04/04/1991 | WO1991004451A1 Thin film gas heat exchanger |
| 02/12/1991 | US4991608 Apparatus and method for cleaning heat exchangers |
| 01/29/1991 | CA1279638C Process for cleaning tube type heat exchangers |
| 01/22/1991 | CA1279241C Removal of iron fouling in cooling water systems |
| 11/27/1990 | US4972805 Method and apparatus for removing foreign matter from heat exchanger tubesheets |
| 11/20/1990 | CA1276625C Controlling rapping cycle |
| 11/15/1990 | WO1990013370A1 Pneumatic desedimentation machine |
| 10/17/1990 | CN1046220A Mechanism and process for cleaning gas-preheating device in industrial furnase or kilm |
| 09/20/1990 | DE3908845A1 Method for cleaning condensers and heat exchangers on the cooling water side |
| 09/19/1990 | CN1045453A Controlling rapping cycle |
| 08/22/1990 | EP0224490B1 Device and process for cleaning a recirculation-type regenerative heat exchanger |
| 08/07/1990 | CA1272433A1 Cleaning method |
| 08/02/1990 | DE3902366A1 Method and device for cleaning and regulating the pressures in piping systems |
| 07/18/1990 | EP0378013A2 Product for cleaning plate exchangers, especially in the nuclear industry, and process using this product |
| 07/04/1990 | CN1008660B Soot blower |
| 05/08/1990 | US4922937 Exhausting high speed gas; preventing shock waves by adding fluid to decelerate |
| 05/01/1990 | US4921546 High velocity steaming and simultaneous injection of deceleration fluid; pipes |
| 03/07/1990 | EP0357572A1 A process for cleaning tube type heat exchangers |
| 03/06/1990 | US4905900 Water cannon apparatus for cleaning a tube bundle heat exchanger, boiler, condenser, or the like |
| 02/27/1990 | US4903756 Heat generator |
| 12/20/1989 | CN2049755U Auto dust cleaning machine for heat exchanger |
| 11/28/1989 | CA1263375A1 Apparatus and method for cleaning rotating regenerative heat exchangers |
| 11/23/1989 | EP0342767A1 Controlling rapping cycle |
| 08/29/1989 | US4860821 Process for cleaning tube type heat exchangers |
| 08/22/1989 | US4858632 Pneumatic desedimentation machine |
| 08/15/1989 | US4856545 Multi-lange tube bundle cleaner |
| 08/01/1989 | US4853014 Method and apparatus for cleaning conduits |
| 06/27/1989 | US4842812 Active surfaces of suspended particles attract colloidal corrosion product deposits |
| 06/06/1989 | US4836146 Controlling rapping cycle |
| 03/28/1989 | US4815523 Device and process for cleaning a recirculation-type regenerative heat exchanger |
| 03/15/1989 | EP0307144A2 Method for decreasing colloidal corrosion product deposition rate |
| 02/21/1989 | US4805653 Mobile articulatable tube bundle cleaner |
| 02/09/1989 | DE3725211A1 Process and device for removing deposits from heat exchanger surfaces |
| 01/18/1989 | EP0299166A1 Method for removing scale on inner surfaces of boiler tube members |
| 12/06/1988 | US4789406 Method and compositions for penetrating and removing accumulated corrosion products and deposits from metal surfaces |
| 11/08/1988 | CA1244328A1 Methods and compositions for removing copper and copper oxides from surfaces |
| 11/01/1988 | CA1243917A1 Process and agent for the prevention of tartrate deposits |
| 09/27/1988 | US4773357 Water cannon apparatus and method for cleaning a tube bundle heat exchanger, boiler, condenser, or the like |
| 09/21/1988 | CN88105662A Chemical cleaner for heavy oil stain |
| 09/01/1988 | DE3705240A1 Process and equipment for controlling the corrosion protection and/or the mechanical cleaning of heat exchanger pipes |
| 08/23/1988 | US4765394 Heat exchanger with a soot blower |
| 07/13/1988 | EP0274032A1 Fuel cell coolant inlet manifold and system |
| 07/06/1988 | EP0273182A1 Method of cleaning a container |
| 06/14/1988 | US4750547 Method for cleaning inner surfaces of heat-transfer tubes in a heat-exchanger |
| 03/10/1988 | DE3630386A1 Process and arrangement for cleaning a heat exchanger |
| 02/25/1988 | DE3628656A1 Device for cleaning liquid-conveying systems, in particular heating installations |
| 02/09/1988 | CA1232602A1 Apparatus for carrying out physical and/or chemical processes, more specifically a heat exchanger of the continuous type |
| 02/03/1988 | CN87203198U 清洗机 Washing machine |
| 01/26/1988 | US4721532 Removal of iron fouling in cooling water systems |
| 01/19/1988 | US4720306 Cleaning method |
| 01/12/1988 | US4718142 Gas driven pipe cleaner and reel |
| 01/06/1988 | CN85104615B Purifying device for regenerating heat-exchanging unit |
| 12/23/1987 | EP0172244B1 Installation for cleaning heat exchange surfaces of storage masses in circulation regenerative heat exchangers |
| 12/03/1987 | DE3618268A1 Cleaning device on a reactor |
| 11/24/1987 | US4708197 Air to air heat exchanger |
| 11/17/1987 | US4706737 Fuel cell coolant inlet manifold and system |
| 11/10/1987 | US4705057 Cleaning device for regenerative heat exchangers |
| 11/03/1987 | US4704208 Scale-inhibiting process |
| 07/23/1987 | DE3601540A1 Heating coil having a cleaning valve |
| 07/08/1987 | EP0228144A1 Apparatus for carrying out physical and/or chemical processes, more specifically a heat exchanger of the continuous type |
| 07/08/1987 | EP0228143A2 Apparatus for carrying out physical and/or chemical processes, more specifically a heat exchanger of the continuous type |
| 06/10/1987 | EP0224490A1 Device and process for cleaning a recirculation-type regenerative heat exchanger. |
| 05/27/1987 | CN86107449A Method for cleaning inner surface of heat transfering tube of heat exchanger |
| 05/19/1987 | US4666531 Device and method for cleaning fin-type heat exchangers in air ducts |
| 03/25/1987 | EP0215396A2 Mobile articulatable tube bundle cleaner |
| 03/17/1987 | US4649987 Apparatus for cleaning the heat-exchanging surfaces of the storage elements of rotary regenerative heat exchangers |
| 03/11/1987 | EP0213380A2 Soot blower |
| 03/04/1987 | EP0212894A2 Removal of iron fouling in cooling water systems |
| 03/04/1987 | CN86105365A 吹灰器 Sootblowers |
| 02/24/1987 | CA1218313A1 Apparatus for removing foreign matters from condenser cooling water |
| 02/11/1987 | CN86105761A Method of removing boiler scales |
| 02/03/1987 | US4640339 Apparatus for carrying out physical and/or chemical processes, more specifically a heat exchanger of the continuous type |
| 12/10/1986 | CN85104615A Purifying device for regenerating heat-exchanging unit |
| 12/04/1986 | WO1986007099A1 Patina remover, process for its preparation, and method for removing patina |
| 11/06/1986 | WO1986006464A1 Device and process for cleaning a recirculation-type regenerative heat exchanger |
| 10/22/1986 | EP0198340A1 Cleaning process |
| 10/07/1986 | US4615382 Apparatus for carrying out physical and/or chemical processes, more specifically a heat exchanger of the continuous type |
| 09/30/1986 | US4614226 Vehicle heater repair apparatus and method |
| 09/24/1986 | EP0195366A2 Process and device for cleaning fume ducts |
| 08/26/1986 | CA1210302A1 Boiler scale prevention employing an organic chelant |
| 06/11/1986 | EP0184558A1 Scale-inhibiting method and compound |