| Patents for F28G 9 - Cleaning by flushing or washing, e.g. with chemical solvents (1,594) |
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| 02/10/2000 | WO2000006963A1 Method and apparatus for prevention of sludge piling |
| 02/02/2000 | EP0976853A1 Method for removing alkaline earth metal sulfate scale from a boiler or heat exchanger with use of sonic energy |
| 01/26/2000 | EP0772696B1 Method for removing alkaline sulfate scale |
| 01/25/2000 | US6017399 Exposing steam phase having one or more volatile amines to the surface of component laden with solid deposit which has an acidic site and a basic site to absorp inorganic cation and anion and selective sorption of volatile amines |
| 01/12/2000 | CN2358429Y Cleaning liquid container for gas water heater |
| 01/06/2000 | WO2000000306A1 Method and apparatus for treatment of internal surfaces in a closed-loop fluid system |
| 01/06/2000 | CA2334285A1 Method and apparatus for treatment in the form of scale removal from, or application of coating to, internal surfaces in a closed fluid system |
| 12/08/1999 | EP0800641B1 Method for cooling and cleaning the plates of a plate heat exchanger and a plate heat exchanger with a wetting device |
| 12/02/1999 | WO1999061179A1 Method for cleaning a container |
| 11/25/1999 | DE19920982A1 Degreasing and descaling vessel, especially conventional power station boiler |
| 10/12/1999 | US5964982 Method of removing encrustations in evaporation plants |
| 10/12/1999 | US5964238 Condensate discharge line treatment |
| 10/06/1999 | EP0946944A2 Polymer dispersants and methods of use in a nuclear steam generator |
| 09/16/1999 | WO1999046538A1 Chamber cleaning mechanism |
| 09/15/1999 | EP0941776A1 Air feed passage cleaning apparatus |
| 09/08/1999 | EP0801721B1 Replaceable nozzle for high temperature reactors having a fire-resistant lining |
| 09/01/1999 | CN2336315Y Ash removing pipe cleaning device |
| 08/26/1999 | DE19802169A1 Cleaning process for biological and oxidation deposit removal from e.g. water pipes, heat exchangers, cooling water circuits, vessels and fittings |
| 07/20/1999 | US5924478 For a mobile work machine |
| 07/06/1999 | US5919406 Plate heat exchanger with wetting device |
| 06/30/1999 | EP0926428A2 Method and apparatus for removal of fuel gases from a gas distribution network |
| 04/29/1999 | WO1999020399A1 A gun |
| 04/22/1999 | DE19745538A1 Cleaning air conditioner units for vehicles |
| 04/14/1999 | EP0907848A1 A valve for changing the direction of flow in pipes leading to/from a heat-exchanger |
| 04/06/1999 | US5890531 Apparatus for the self-cleaning of process tubes |
| 03/18/1999 | WO1999013279A1 Apparatus and method for cleaning pipes of refrigerating unit |
| 03/17/1999 | CN2310977Y Device for cleaning pipeline bidirectionally with mixed detergent |
| 03/16/1999 | US5882431 Two phased flow developed by injection of hydrogen into coolant alone or mixed with inert gases |
| 03/09/1999 | US5879466 Apparatus and method for cleaning radiator fins |
| 03/04/1999 | DE19746888C1 Cleaning heat exchangers in power stations |
| 03/04/1999 | DE19725631C1 Apparatus for cleaning convection heating body |
| 03/03/1999 | EP0899318A2 Method for cleaning heavy hydrocarbon scale adhered to equipment and piping structure for cleaning |
| 03/03/1999 | CN1042365C Method and apparatus for removing siliceous dirt in turbine |
| 03/02/1999 | US5876623 Biodegradable aspartic acid polymers for preventing scale formation in boilers |
| 03/02/1999 | US5875833 Regenerative heat exchanger |
| 02/04/1999 | DE19732654A1 Method for cleaning a container |
| 02/02/1999 | US5865617 Replaceable nozzle for high temperature reactors having a fire-resistant lining |
| 01/26/1999 | US5864596 Minimizing the accumulation of metal-oxide deposits |
| 01/20/1999 | CN2304886Y Automatic water-saving ash flusher with tipping bin |
| 01/07/1999 | EP0755495A4 An upper bundle steam generator cleaning system and method |
| 12/30/1998 | CN2302495Y Automatic cleaning device for heat exchanger |
| 12/22/1998 | CA2189439C An upper bundle steam generator cleaning system and method |
| 11/24/1998 | US5841826 Method of using a chemical solution to dislodge and dislocate scale, sludge and other deposits from nuclear steam generators |
| 10/08/1998 | WO1998044304A1 Piping washing method and piping washing apparatus for refrigerating apparatuses |
| 09/23/1998 | CN2292270Y Boiler descaling device |
| 09/17/1998 | WO1998016329A3 Steam generator cleaning, inspection, and repair system |
| 09/17/1998 | DE19709700A1 System for washing out pipes, especially of heat exchangers or condensers |
| 09/16/1998 | CN1193099A Boiler washing method for power plant |
| 09/11/1998 | WO1998039111A1 System and method for flushing a cooler |
| 09/02/1998 | EP0679241B1 An arrangement for cleaning automatically heat-exchanging passageways, particularly tool-coolant passageways |
| 08/27/1998 | DE19706307A1 Apparatus and method for cleaning a vessel |
| 07/28/1998 | US5784887 Targeted fluid delivery system |
| 07/14/1998 | US5779814 Method for controlling and removing solid deposits from a surface of a component of a steam generating system |
| 07/14/1998 | US5778831 To clean fireside deposits from convective surfaces of a fuel-fired boiler |
| 07/01/1998 | CN1186002A Apparatus and method for cleaning cooling pipelines |
| 06/09/1998 | US5764717 Chemical cleaning method for the removal of scale sludge and other deposits from nuclear steam generators |
| 06/09/1998 | US5762821 Compound for removing alkaline earth metal scale deposits and silica-based scale deposits |
| 05/14/1998 | WO1998003051A3 Polymer dispersants and methods of use in a nuclear steam generator |
| 05/13/1998 | CN1038361C Steam oxygenation blow-washing method |
| 04/23/1998 | WO1998016329A2 Steam generator cleaning, inspection, and repair system |
| 03/25/1998 | EP0831066A1 Biodegradable Aspartic acid polymers for preventing scale formation in boilers |
| 03/24/1998 | US5730209 Defrost and liquid distribution for plate-fin heat exchangers |
| 03/20/1998 | CA2210329A1 Biodegradable aspartic acid polymers for preventing scale formation in boilers |
| 03/18/1998 | EP0829695A1 Method of cleaning the inner surface of a steel circulation system using a lead-based liquid metal coolant |
| 02/25/1998 | CN1174323A Cleaning method and cleanser for use in water way system |
| 02/19/1998 | WO1998006991A1 Heat recycler and the assembly, construction and cleaning thereof |
| 02/05/1998 | DE19630909A1 Pipeline decontamination system |
| 01/29/1998 | WO1998003051A2 Polymer dispersants and methods of use in a nuclear steam generator |
| 01/28/1998 | EP0820792A2 Process for removing incrustations in evaporating devices |
| 01/22/1998 | DE19623390C1 Process for cleaning a vessel, especially a steam generator |
| 01/15/1998 | WO1998001688A1 A valve for changing the direction of flow in pipes leading to/from a heat-exchanger |
| 01/13/1998 | US5706841 Arrangement for cleaning automatically heat-exchanging passageways, particularly tool-coolant passageways |
| 12/29/1997 | EP0772696A4 Method for removing alkaline sulfate scale |
| 12/12/1997 | CA2207406A1 A process for cleaning a tank |
| 11/25/1997 | US5690176 Composition effective in removing asphaltenes |
| 11/11/1997 | US5685918 Potassium hydroxide, chelate compound, sodium glucoheptonate synergist |
| 10/22/1997 | EP0801721A1 Replaceable nozzle for high temperature reactors having a fire-resistant lining |
| 10/21/1997 | US5679170 Methods for removing iron oxide scale from interior surfaces of steel vessels using formic acid-citric acid mixtures |
| 10/16/1997 | WO1997038264A1 Sootblower nozzle |
| 10/15/1997 | EP0800641A1 Plate heat exchanger with wetting device |
| 10/01/1997 | CN1160847A Organic anti-scale corrosion inhibitor and its compounding process |
| 09/25/1997 | WO1997035156A1 Method of cleaning the inner surface of a steel circulation system using a lead-based liquid metal coolant |
| 09/17/1997 | CN1159568A Defrost and liquid distribution for plate-fin heat exchanger |
| 09/16/1997 | US5667139 Cleaning apparatus for heat exchange surfaces and an improved nozzle device therefor |
| 08/12/1997 | CA2120033C Improved exhaust treatment system |
| 06/18/1997 | CN1152114A Chemical cleaning process and special chemical for heating system |
| 05/21/1997 | CN1150473A Upper bundle steam generator cleaning system and method |
| 05/15/1997 | WO1997017533A1 Flushing apparatus |
| 05/14/1997 | EP0772696A1 Method for removing alkaline sulfate scale |
| 05/07/1997 | EP0752086A4 Potable water collection cleaning apparatus |
| 05/07/1997 | CN1034832C Mechanism and process for cleaning gas-preheating device in industrial furnace or kilm |
| 05/06/1997 | US5626184 Sootblower |
| 04/01/1997 | US5615695 Apparatus for cleaning fluid lines |
| 03/06/1997 | WO1997008107A1 A chemical cleaning method for the removal of scale, sludge and other deposits from nuclear steam generators |
| 02/19/1997 | CN1143104A Effective composite for removing asphalt |
| 02/11/1997 | US5601657 Introducing cleaning liquid into secondary side of heat exchanger, heating under pressure, reducing pressure to boil, removing liquid with solubilized deposits, introducing second cleaning liquid, draining after desired time |
| 02/04/1997 | US5599402 In situ flushing with aqueous solution of hydrolases and proteolytic enzymes |
| 01/29/1997 | EP0755495A1 An upper bundle steam generator cleaning system and method |
| 01/29/1997 | EP0667949B1 Cleaning apparatus for heat exchange surfaces |
| 01/08/1997 | EP0752086A1 Potable water collection cleaning apparatus |