序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
121 LIGNITE DRYING WITH CLOSED LOOP HEAT PUMP EP16169541.6 2016-05-13 EP3098550A1 2016-11-30 EDEL, Thomas; GEIGER, Frederic; POURCHOT, Thierry; WANTZ, Didier

The invention relates to a dryer system for drying lignite coal used in a power plant.

The system comprises a dryer and a closed loop heat pump circuit that is configured and arranged to provide heat energy to the dryer (10). The closed loop heat pump circuit includes a working fluid, a dryer heat exchanger (13), an expansion device (17) fluidly connected and downstream of the dryer heat exchanger (13), arranged to enable heat energy transfer from the vapour of the second outlet line (16) to the first working fluid and a compressor (21) for compressing the working fluid.

122 COMBUSTION AVEC RÉCUPÉRATION DE CHALEUR AMELIORÉE EP14835481.4 2014-12-19 EP3087041A1 2016-11-02 JARRY, Luc; JOUMANI, Youssef; LEROUX, Bertrand; TSIAVA, Rémi
Process for the combustion of a fuel (32) with an oxygen-rich preheated oxidizer (43), in which an oxygen-rich oxidant (41) is heated in a first heat exchanger (40a) by means of first portion of the residual heat of the fuel gases generated (11), the heated oxidant is mixed with air and/or a predominantly inert gas (such as air) in order to obtain the oxygen-rich oxidizer (42) and the oxygen-rich oxidizer is preheated in a second heat exchanger (40b) by means of a second portion of the residual heat of the flue gases (11).
123 SYSTEM FOR DRYING COAL USING SUPERHEATED STEAM EP12856662.7 2012-04-10 EP2791604B1 2016-05-04 KIM, Sung Kon
The present disclosure relates to a coal drying system for removing water contained in coal used as a fuel of a thermoelectric power plant with superheated steam. The system prevents the incomplete combustion of the coal by removing water existing inside and outside the coal fuel of the thermoelectric power plane, thereby improving a heating value of coal and minimizing the discharge of pollutants, prevents the corrosion of the system and improves the durability, and increases the use of low-quality coal of which the demand is low, thereby improving the stable supply of the coal.
124 Booster air heater for high moisture fuels EP13183522.5 2013-09-09 EP2706299B1 2016-03-23 Darling, Scott L; Sadlon, Edward S
A system and method for drying pulverized high moisture fuel for use in a selective catalytic reduction system equipped combustion system is provided. The combustion system includes a mill for pulverizing fuel, an air heater, a booster air heater and a fuel duct for feeding dried pulverized fuel to a combustion furnace.
125 TEMPERATURE CONTROL OF A FLUID DISCHARGED FROM A HEAT EXCHANGER EP14764020.5 2014-03-11 EP2971741A1 2016-01-20 BATENBURG, Gregory A.; COATTA, Jason J.
A reciprocating piston cryogenic pump has been suspended from stroking when process fluid discharge temperature from a vaporizer dropped below a threshold to prevent freezing of a heat exchange fluid circulating through the vaporizer and damage to downstream components. Suspension of the pump results in a decrease of process fluid pressure downstream of the vaporizer, which is undesirable. In the present technique, a temperature is monitored correlating to process fluid temperature downstream of the vaporizer. The amount of process fluid discharged from the pump in each cycle is adjusted as a function of the temperature such that the average residence time of the process fluid in the vaporizer is increased as the discharge amount decreases, increasing process fluid discharge temperature. The average mass flow rate of the process fluid through the vaporizer is unchanged regardless of pump discharge amount such that process fluid pressure downstream of the vaporizer is maintained.
126 SYSTEM FOR DRYING COAL USING SUPERHEATED STEAM EP12856662 2012-04-10 EP2791604A4 2015-07-29 KIM SUNG KON
The present disclosure relates to a coal drying system for removing water contained in coal used as a fuel of a thermoelectric power plant with superheated steam. The system prevents the incomplete combustion of the coal by removing water existing inside and outside the coal fuel of the thermoelectric power plane, thereby improving a heating value of coal and minimizing the discharge of pollutants, prevents the corrosion of the system and improves the durability, and increases the use of low-quality coal of which the demand is low, thereby improving the stable supply of the coal.
127 Method for combustion of a low-grade fuel EP13001643.9 2013-03-28 EP2784388A1 2014-10-01 Ekman, Tomas

Method for combustion of a fuel using at least one industrial burner (115), which burner (115) is fed with a low-grade, gaseous fuel with a Lower Heating Value (LHV) of 8 MJ/Nm3 or less and an oxidant.

The invention is characterised in that the combustion products from the combustion of the fuel with the oxidant are brought firstly through a first heat exchanging step (150;201), in which thermal energy is transferred from the combustion products to the fuel which is thereby preheated, and in that the thus cooled combustion products thereafter are brought through a second heat exchanging step (151;203), in which thermal energy is transferred from the cooled combustion products to the oxidant which is thereby also preheated.

The invention also relates to a system for preheating fuel and oxidant.

128 DEVICE AND METHOD FOR FEEDING FUEL EP00952004 2000-08-15 EP1217299A4 2008-03-19 HOSHINO TOSHIHUMI; HASEGAWA TOSHIAKI; MOCHIDA SUSUMU; HOSHINO KIYOKO
A device and a method for feeding fuel capable of improving a fuel/combustion air mixing process and a controllability of mixing ratio, and also a device and a method for combustion capable of developing noble combustion characteristics. The fuel feed device of the combustion device comprises fuel feed means, a combustion gas lead-out device, a steam feed device, a mixing device, and a fuel gas lead-in device, wherein the combustion gas lead-out device leads out combustion gas generated in a combustion area from the combustion area to the outside of a furnace, the mixing device mixes at least one of the combustion gas led to the outside of the furnace and steam from the steam feed device with fuel from the fuel feed means, and the fuel gas lead-in device leads a mixed fluid of combustion gas, steam, and fuel, as a fuel gas, into the combustion area and mixes the fuel gas flow with combustion air, whereby, a process where fuel is mixed with air after the combustion gas is led out of the furnace and a process where the fuel gas flow is mixed further with combustion air are executed stepwise so as to improve the mixing process of fuel and combustion air and increase the controllability of the mixing ratio and, in addition, flame characteristics are controlled by such a fuel gas flow control so that a flame having novel characteristics can be formed in the combustion area.
129 Arrangement for converting a conventional oil boiler to a boiler with moist, granular and solid fuel EP98660089.8 1998-09-08 EP0902235B1 2003-04-16 Oksanen, Mauno; Miettinen, Markku; Pyykkönen, Markku; Pajunen, Kari
130 DEVICE AND METHOD FOR FEEDING FUEL EP00952004.0 2000-08-15 EP1217299A1 2002-06-26 HOSHINO, Toshihumi; HASEGAWA, Toshiaki Nippon Furnace Kogyo K., Ltd.; MOCHIDA, Susumu Nippon Furnace Kogyo Kaisha, Ltd.; HOSHINO, Kiyoko

The present invention provides a fuel feeding apparatus and method for improving the controllability of mixing process and mixing ratio of fuel and combustion air, and a combustion system and method for effecting new combustion properties. The fuel feeding apparatus of the combustion system has fuel feeding means, combustion gas extraction means, steam supply means, mixing means and fuel gas introduction means. The combustion gas extraction means extracts combustion gas of a combustion area therefrom. The mixing means mixes the fuel of fuel feeding means with at least one of combustion gas extracted from the furnace and steam of a steam generator. The fuel gas introduction means introduces a mixed fluid of combustion gas, steam and fuel to the combustion area as a fuel gas, and allows the fuel gas to be mixed with the combustion air. A step of mixing the fuel with the combustion gas after extracted from the furnace and a step of mixing the fuel gas with the combustion air are stepwisely carried out, so that the controllability of mixing process and ratio of the air and fuel is improved. Such a control of fuel gas flow enables control of characteristics of flame and production of flame with new properties in the combustion area.

131 VERFAHREN ZUR BESCHICKUNG DER VERBRENNUNGSEINHEIT EINES KOHLEKRAFTWERKS EP98913740.1 1998-03-28 EP0986720B1 2002-05-15 HUNSINGER, Hans; KREISZ, Siegfried; SEIFERT, Helmut; VEHLOW, Jürgen
The invention relates to a method for charging the combustion unit of a coal-fuelled power station in which the coal is fed into said combustion unit at least partially using a stream of flue gas. According to prior art, said flue gas stream consists of the recycled flue gas of the coal-fuelled power station. The aim of the invention is to provide another stream of flue gas. To this end, the flue gas stream of a waste incineration plant is used as a flue gas stream, said flue gas stream having already been treated to large extent to remove mercury and other heavy metals, flue ash and hydrochloric acid.
132 VERFAHREN ZUR BESCHICKUNG DER VERBRENNUNGSEINHEIT EINES KOHLEKRAFTWERKS EP98913740.1 1998-03-28 EP0986720A1 2000-03-22 HUNSINGER, Hans; KREISZ, Siegfried; SEIFERT, Helmut; VEHLOW, Jürgen
The invention relates to a method for charging the combustion unit of a coal-fuelled power station in which the coal is fed into said combustion unit at least partially using a stream of flue gas. According to prior art, said flue gas stream consists of the recycled flue gas of the coal-fuelled power station. The aim of the invention is to provide another stream of flue gas. To this end, the flue gas stream of a waste incineration plant is used as a flue gas stream, said flue gas stream having already been treated to large extent to remove mercury and other heavy metals, flue ash and hydrochloric acid.
133 UPGRADING COAL AND OTHER CARBONACEOUS FUELS USING A LEAN FUEL GAS STREAM FROM A PYROLYSIS STEP PCT/US2012044880 2012-06-29 WO2013009497A3 2013-04-18 COOLIDGE DENNIS W; HORNE DEANE A; WHITE LESLIE C; SMITH RONN G
A method and apparatus for upgrading coal and other carbonaceous fuels includes subjecting the carbonaceous fuel to a pyrolyzing process, thereby forming upgraded carbonaceous fuel and a flow of lean fuel gases. Auxiliary fuel is combusted in an auxiliary fuel combustor to produce auxiliary fuel combustion gases, and the lean fuel gases are heated with the auxiliary fuel combustion gases. The heated lean fuel gases are combusted in a lean fuel combustor, thereby producing a gas stream of products of combustion, and at least a portion of the gas stream of products of combustion are directed to the pyrolyzer.
134 METHOD OF ENHANCING THE QUALITY OF HIGH-MOISTURE MATERIALS USING SYSTEM HEAT SOURCES PCT/US2005036844 2005-10-11 WO2006042308A3 2007-02-08 BULLINGER CHARLES W; NESS MARK A; SARUNAC NENAD; LEVY EDWARD K; WEINSTEIN RICHARD S; JAMES DENNIS R
The present invention harvests and utilizes fluidized bed drying technology and waste heat streams augmented by other available heat sources to dry feedstock or fuel. This method is useful in many industries, including coal-fired power plants. Coal is dried using the present invention before it goes to coal pulverizers and on to the furnace/boiler arrangement. Coal can be intercepted on current coal feed systems ahead of the pulverizers. Drying fuel, such as coal, is done to improve boiler efficiency and reduce emissions. A two-stage bed utilized in the process first "pre-dries and separates" the feed stream into desirable and undesirable feedstock. Then, it incrementally dries and segregates fluidizable and non-fluidizable material from the product stream. This is all completed in a low-temperature, open-air system. Elevation of fan room air temperature is also accomplished using waste heat, thereby making available to the plant system higher temperature media to enhance the feedstock drying process.
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