| Patents for F22D 1 - Feed-water heaters, e.g. preheaters (2,641) |
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| 04/19/1995 | EP0648323A1 Steam power plant for generating electric power |
| 03/29/1995 | CN2193491Y Vacuum deoxidising apparatus with boiler pressure stablizing unit |
| 03/02/1995 | DE4328648A1 Power station process |
| 03/01/1995 | CN2190739Y Scaling-free oxygen corrosion free water-heating boiler |
| 02/23/1995 | DE4327476A1 Method for operating a fossil-fuel-fired steam generator and steam-generating plant for carrying out the method |
| 02/22/1995 | EP0639254A1 Method in small-power plant use. |
| 02/08/1995 | CN2189265Y Smoke-gas preheater |
| 02/01/1995 | CN2188696Y Efficient desorption deoxidating apparatus |
| 01/26/1995 | WO1994027089A3 Steam power plant for generating electric power |
| 01/04/1995 | CN2186858Y Energy saving multipurpose non-pressure boiler with preheating water tank |
| 01/04/1995 | CN2186857Y Verticle fume heat recovering and dedusting heat exchanger |
| 01/04/1995 | CN1097056A Multi-function preheater for saving purpose |
| 12/28/1994 | CN2186350Y Coal-saving apparatus for boiler |
| 12/20/1994 | CA1333551C Method and apparatus for optimization of feedwater heater liquid level |
| 12/14/1994 | CN1096357A Improved temperature control of steam for boilers |
| 11/24/1994 | WO1994027089A2 Steam power plant for generating electric power |
| 11/24/1994 | CA2139875A1 Steam power plant for generating electric power |
| 11/17/1994 | DE4315482A1 Method of generating energy in a steam power plant operated by fossil fuels |
| 11/16/1994 | CN2182924Y Thermal-chemical de-aeration device |
| 11/16/1994 | CN2182923Y Heat pipe type spiral direction flow heat recovering device |
| 11/15/1994 | US5363812 Method and apparatus for controlling the bed temperature in a circulating fluidized bed reactor |
| 11/08/1994 | US5361827 Economizer system for vapor generation apparatus |
| 11/02/1994 | EP0622586A1 Method of operating a pipeline |
| 10/13/1994 | WO1994023260A1 Flue-gas ducts and recuperative heat-exchangers for flue gases |
| 10/13/1994 | DE4311775A1 Feedwater-preheater construction for preheating temperatures above 100 DEG C for steam generators, in particular locomotive-type boilers |
| 10/11/1994 | US5353653 Heat exchanger abnormality monitoring system |
| 10/05/1994 | EP0618404A1 Method and installation for generating steam in a heat power plant |
| 09/20/1994 | US5347958 Heat recovery apparatus and an improved heat recovery method |
| 09/15/1994 | WO1994020198A1 Process and device for utilizing the energy of flue gasses from coal-fired power stations |
| 09/06/1994 | US5343705 Method and apparatus for maintaining a required temperature differential in vacuum deaerators |
| 09/01/1994 | WO1994019645A1 Method in small-power plant use |
| 08/31/1994 | EP0612957A1 Electrode boilers with automatic control |
| 08/31/1994 | CN2175871Y Smoke-heating device |
| 08/17/1994 | EP0560834B1 Bottom or wall structure for a metallurgical vessel |
| 07/13/1994 | CN1089331A Method for operation of apparatus of power station and apparatus operating with same |
| 07/07/1994 | WO1994015147A1 Economizer system for vapor generation apparatus |
| 06/22/1994 | CN2169772Y Low voltage hot tube power saving device |
| 06/01/1994 | CN2167270Y Heat oxygen removing device |
| 05/26/1994 | WO1994011677A1 Incineration plant |
| 05/18/1994 | CN2165331Y Dusting coal-saver |
| 05/04/1994 | EP0595009A1 Method of operating a power plant and power plant working according to this method |
| 05/04/1994 | CN2163940Y Simple descaling device for water heaters |
| 05/03/1994 | US5307766 Temperature control of steam for boilers |
| 04/14/1994 | WO1994008180A1 Process and device for making use of the energy from flue gases in coal-fired power stations |
| 04/13/1994 | CN2161819Y Deoxygenating device |
| 04/07/1994 | DE4233685A1 Verfahren und Anordnung zur Energienutzung von Rauchgasen in kohlegefeuerten Kraftwerken Method and system for energy use of flue gases in coal-fired power plants |
| 04/06/1994 | CN2160820Y Automatic thermal energy recovery device |
| 03/29/1994 | US5297389 Method and apparatus for maintaining a required temperature differential in vacuum deaerators |
| 03/23/1994 | CN2159502Y Sodium sulphite deoxidiser for boiler |
| 03/15/1994 | US5293842 Method for operating a system for steam generation, and steam generator system |
| 03/15/1994 | US5293841 Arrangement for utilizing the heat contained in the exhaust gas of a coal-fired boiler |
| 03/10/1994 | DE4301107A1 Steam-heated air preheater - Has lowest pressure stage in steam circuit as fixed pressure stage for condensate pumps |
| 03/09/1994 | CN2158496Y Reinforced flexible tube for oil supply |
| 03/02/1994 | EP0584430A1 A steaming case |
| 02/23/1994 | CN2157399Y Heat exchanging apparatus capable of heating circulating water with flue gas |
| 02/16/1994 | CN1082170A Vacuum oxygen-removing method and equipment for hot water circulation system |
| 01/12/1994 | CN1080619A Jet removing oxygen device |
| 01/05/1994 | CN2152146Y Reciprocating feed-back desorption and oxygen removing device |
| 12/29/1993 | CN1080040A Method and apparatus for adjusting teperature of smoke at outlet of vapor generator |
| 12/29/1993 | CN1079942A Deoxidization method and apparatus based on hydrogen desoxydation principle |
| 12/22/1993 | CN2150452Y De-aeration water-heating boiler |
| 12/09/1993 | WO1993024790A1 Process and device for regulating the flue gas temperature at the outlet of a steam generator |
| 12/08/1993 | CN2148888Y Streamlined coal-saving device |
| 12/02/1993 | DE4218016A1 Verfahren und Vorrichtung zur Regelung der Rauchgastemperatur am Austritt eines Dampferzeugers Method and device for regulating the flue gas temperature at the outlet of a steam generator |
| 11/25/1993 | DE4222811C1 Using heat in flue gas from coal-fired boiler - involves rotating heat transmission unit in which flue gas is cooled and withdrawn heat used for tempering combustion air fed to boiler |
| 11/03/1993 | CN2145317Y Oxygen-eliminated steam boiler |
| 11/03/1993 | CN1078033A Compound phase change heat exchanger |
| 09/22/1993 | EP0561220A1 Process for operating a steam generating system and steam generator |
| 09/22/1993 | EP0560834A1 Bottom or wall structure for a metallurgical vessel. |
| 09/22/1993 | CN2142536Y Dust-removing, desulfation and energy-saving device for boiler |
| 09/08/1993 | EP0558899A1 System for using the heat of the exhaust gases from a coal-fired boiler |
| 08/11/1993 | CN2140020Y Waste heat recovery-spray oxygen removal unit |
| 08/04/1993 | EP0473654A4 Universal liquids heat transfer economizer |
| 08/04/1993 | CN2139657Y Internal deoxygenating device |
| 06/23/1993 | CN2136933Y Combined electronic catalytic exchanging oxygen removing device |
| 06/17/1993 | DE4140685A1 Heat exchanger used as high-pressure preheater for feed water - incorporates at least one U=shaped vertical tube bunch arranged at least partly in condensate cooling zone. |
| 06/16/1993 | CN2136394Y Spray device for flue of boiler |
| 05/26/1993 | CN2134590Y Low order spray packed type thermal deoxidater |
| 05/19/1993 | CN2133763Y Multi-drawback mixing diffuser |
| 04/13/1993 | US5201366 Process and equipment for the preheating and multi-stage degassing of water |
| 03/16/1993 | US5194187 Steam/water mixer |
| 02/17/1993 | CN2127139Y Waste heat coal-saving unit of water tank |
| 01/20/1993 | CN1068181A Thermal deoxygenizing apparatus |
| 11/24/1992 | US5165237 For deaerating incoming water in a steam generation system |
| 11/19/1992 | DE4116356A1 Firing system for electric power generator - has heat-exchanger supplying combustion-gas heat via transfer circuit to further exchangers |
| 11/11/1992 | CN2121619U Exhaust purification device of no-chimney boiler |
| 11/11/1992 | CN1019045B Method to save energy and water for wine-making industry and its softened water cooler |
| 10/28/1992 | CN2120258U Fuel-economizing boiler water feed deoxygenating device |
| 10/21/1992 | EP0509298A1 High pressure feedwater preheater |
| 10/14/1992 | EP0508585A2 Method and apparatus for maintaining a required temperature differential in vacuum deaerators |
| 09/16/1992 | CN2116152U Electronic single column catalysis exchange deoxidising apparatus |
| 09/16/1992 | CN1064544A Waste heat cycling method |
| 07/22/1992 | CN2110787U Automatic electrocontrol device for supplying water, desorption and deoxidation of boiler |
| 07/14/1992 | US5129366 Deaeration system for a boiler |
| 07/01/1992 | EP0491815A1 Steam/water mixer |
| 06/10/1992 | CN2106952U Desorption de-aerator |
| 06/08/1992 | WO1992010593A1 Bottom or wall structure for a metallurgical vessel |
| 05/06/1992 | EP0323500B1 Procedure for improving the efficiency of a steam power plant process |
| 04/15/1992 | CN1060335A Deaerator heat exchanger for combined cycle power plant |
| 04/01/1992 | CN2100562U Steam atomizing injector of boiler deoxygenator |