Class / Patent application number | Description | Number of patent applications / Date published |
122412000 | FEED HEATERS | 21 |
20100258062 | COLD WATER PRE-HEATER - The present invention relates to a water warming system and method for warming a hot water heater supply line that includes: a s-shaped piping connected to a water supply line; an insulating compartment surrounding the s-shaped piping; a warm wastewater input into the insulating compartment and a wastewater output from the insulating compartment; and an output from the s-shaped piping connected to a hot water heater. The water supply line inputs either ambient water or cool water into the s-shaped piping. The warm wastewater generated within a home provides a source for the warm wastewater. | 10-14-2010 |
122420000 | Furnace gases | 3 |
20120167838 | Heat Recovery Module - A module for heat recovery from exhausted flue gas in a steam generator is described comprising a flue gas outlet conduit defining a flow path for flue gas from a flue gas outlet of a steam generator to a flue gas conduit junction; a first flue gas conduit defining a flow path for flue gas from the junction to a first air heater; a second flue gas conduit defining a flow path for flue gas from the junction to at least one high pressure and at least one low pressure process liquid economiser. A steam generator using the module, a method implementing the flow principles embodied in such a module, and a method of incorporation of such a module into a steam generator, especially by retrofit, are also described. | 07-05-2012 |
20130125841 | DEVICE FOR RECOVERING RESIDUAL HEAT FROM EXHAUST GAS - A device for recovering residual heat from exhaust gas includes: a dry economizer which heats to-be-heated water by utilizing sensible heat of the exhaust gas, the dry economizer being provided in a duct extending to a funnel through which the exhaust gas is emitted to atmosphere; and a condensation economizer which heats to-be-heated water by utilizing latent heat of condensation of the exhaust gas, the condensation economizer being provided on a downstream side of the dry economizer. The duct includes an upstream duct in which the dry economizer is provided and a downstream duct connected to the upstream duct and directing the exhaust gas to flow upwardly. The condensation economizer is arranged in the downstream duct so that temperature of the exhaust gas amounts to condensation temperature at a vicinity of an upper part of the condensation economizer. | 05-23-2013 |
20150059661 | GASIFICATION APPARATUS - In a gasification apparatus, a gasification furnace ( | 03-05-2015 |
122421000 | Offtake flue | 10 |
20100212610 | Heat Recovery System and Method - A system providing for heat recovery from exhausted flue gas in a steam generator is described comprising a flue gas outlet conduit defining a flow path for flue gas from a flue gas outlet of a steam generator to a flue gas conduit junction point; a flue gas primary conduit defining a flow path for flue gas from the junction to a primary air preheater; a flue gas secondary conduit defining a flow path for flue gas from the junction to a secondary air preheater; wherein a steam generator process fluid heat exchanger is disposed within the flow path of the flue gas primary conduit upstream of the primary air preheater to recover some heat from the flue gas in advance of the primary air preheater. A method implementing the flow principles embodied in such a system is also described. | 08-26-2010 |
20130104815 | ECONOMIZER | 05-02-2013 |
20130118422 | BOILER ENERGY RECOVERY SYSTEM - The present document describes a system for installation on a boiler for providing energy to a deaerator comprising: a heat exchanger for positioning at an exhaust of the boiler and for connecting to the deaerator for decreasing combustion gases temperature from a temperature T | 05-16-2013 |
20130192542 | SPLIT PASS ECONOMIZER BANK WITH INTEGRATED WATER COIL AIR HEATING AND FEEDWATER BIASING - An apparatus for using a water coil air heater with a single bank economizer. A boiler economizer arrangement includes an economizer bank which has separate hot pass bank and cold pass bank economizer portions in a parallel arrangement, each facing the same flow of hot flue gas. Feedwater enters the cold pass bank economizer where it is heated by the hot flue gas, and then flows to a water coil air heater away from the hot flue gas. The feedwater dissipates heat energy in the water coil air heater which may be used to heat air bound for combustion. The feedwater continues into the hot pass bank economizer portion of the economizer arrangement where it absorbs additional heat from the flue gas. The heated feedwater flows out of the economizer arrangement and may be subject to additional heating by a boiler or other heat exchanger. | 08-01-2013 |
20150362176 | Boiler System Comprising an Integrated Economizer - A boiler system and methods for heating a fluid are disclosed, in particular for heating water for producing steam. The boiler comprises an economizer module integrated on the top of a furnace, and is in communication with the furnace to receive heat and/or hot combustion gases therefrom. The economizer comprises tubes receiving the fluid, such as feedwater, to be pre-heated and providing it to the furnace comprising a combustion chamber producing heat and hot combustion gases. The fluid is pre-heated by circulating first through the pre-heating tube assembly of the economizer module before entering the furnace module where the fluid is further heated by the combustion chamber. Since the economizer is located on the furnace module, the boiler does not have a larger footprint compared to a regular boiler system without economizer. Due to the total integration of the economizer with the furnace, the boiler system has improved energy efficiency. | 12-17-2015 |
20160053996 | COMBUSTION AND FLUE GAS TREATMENT SYSTEM AND SOx REMOVAL UNIT - The combustion and flue gas treatment system includes a furnace for combusting a fuel with an oxidizer generating a flue gas, ducting for the flue gas connected to a NO | 02-25-2016 |
20160138797 | BOILER WATER SUPPLY PREHEATER SYSTEM AND BOILER WATER SUPPLY PREHEATING METHOD - The present disclosure relates to a boiler water supply preheater system which preheats water (boiler water supply) supplied to a boiler by a predetermined preheating means, wherein the preheating means is a Rankine cycle (thermal cycle) which moves heat of a waste heat source in the boiler to the boiler water supply to perform preheating and drives a generator to generate electric power using a heat medium. | 05-19-2016 |
20160169504 | DEVICE FOR PREVENTING STEAM FROM BEING PRODUCED IN FLUE GAS COOLER FOR OXYFUEL COMBUSTION BOILER | 06-16-2016 |
20160195262 | FLUE GAS HEAT RECOVERY INTEGRATION | 07-07-2016 |
20170234528 | Method And Device For Generating Superheated Steam From A Working Medium | 08-17-2017 |
122441000 | Steam | 5 |
20080282997 | ECONOMIZER ARRANGEMENT FOR STEAM GENERATOR - An economizer arrangement particularly suitable for new or retrofit application to existing steam generators provides a water cooled stringer support tube system which can accommodate firing a wide range of fuels with varying characteristics in the steam generator. The economizer arrangement according to the present invention is particularly suited for retrofit applications to large supercritical steam generators. The use of water cooled stringer tube supports allows for higher flue gas temperatures in comparison to conventional non-cooled mechanical economizer supports. These features are provided in a design which fits within the existing economizer envelope of the steam generator. | 11-20-2008 |
20140150736 | HEAT RECOVERY APPARATUS AND HEAT RECOVERY SYSTEM - A heat recovery apparatus recovers steam drain including at least one of steam used in a different device and drain where the steam used in the different device is condensed so as to recover heat contained in the steam drain. The heat recovery apparatus includes a pump, which circulates water accumulated in a tank through circulation pipes, an ejector, which is interposed in the circulation pipes and suctions the steam drain and mixes the steam drain with the circulating water so as to recover the steam drain, and a ball tap and a temperature controller, which perform temperature control of the water in the tank by replenishing the tank with tap water after a part of the water in the tank is discharged in the case where the water in the tank has reached a preliminarily set first temperature. | 06-05-2014 |
20150114319 | FEEDWATER PREHEATING SYSTEM AND METHOD - The feedwater preheating system includes a feedwater tank and a constant volume recirculation pump. The feedwater tank is adapted to store the feedwater. The feedwater tank includes feed and return lines. The feed line is adapted to feed the feedwater to the HRSG, and the return line enables returning of the feedwater into the feedwater tank. The return line precludes a control valve, and is configured to the feedwater tank to reduce component loss while feedwater recirculation. The constant volume recirculation pump is configured in the feed line to recirculate the feedwater between the HRSG and the feedwater tank. The pump is capable of recirculating the feedwater at constant speed and volume to reduce heat loss while feedwater recirculation, as against the prior art feedwater preheating systems. | 04-30-2015 |
20160091197 | FOSSIL-FUEL POWER PLANT AND FOSSIL-FUEL POWER PLANT OPERATION METHOD - A thermal power plant has an exhaust gas system, a feed-water system, a high-pressure feed-water heater provided to the feed-water system, a main economizer, a catalytic NOx removal equipment, and a sub economizer. The main economizer is provided to the secondary side of the high-pressure feed-water heater of the feed-water system and increases the temperature of the feed-water by using the residual heat of the combustion gas from the boiler. The catalytic NOx removal equipment is provided to the secondary side of the main economizer of the exhaust gas system. The exhaust gas is supplied to the catalytic NOx removal equipment at a required temperature or higher. The sub economizer is provided between the high-pressure feed-water heater and the main economizer and increases the temperature of water by using the exhaust gas on the secondary side of the NOx removal equipment. | 03-31-2016 |
20160138798 | METHOD FOR PREHEATING FEED WATER IN STEAM POWER PLANTS, WITH PROCESS STEAM OUTCOUPLING - A system for supplying feed water for an evaporator in a water-steam circuit has a condenser for condensing steam to obtain water that can be supplied with steam from a turbine installation. A degasification device for degasing condensate is coupled to the condenser such that a first portion of the condensate of the condenser can be fed to the degasification device. The heat exchanger is coupled to the condenser such that a second portion of the condensate of the condenser can be fed to the heat exchanger, the heat exchanger being coupled to a supply line such that feed water can be fed to the heat exchanger. The heat exchanger is configured such that the feed water can be heated using the second portion of the condensate. The heat exchanger is coupled to the degasification device such that the heated feed water can be fed to the degasification device. | 05-19-2016 |
122444000 | Water tube boiler | 2 |
20120285399 | Gas hot water heater preheater - A modified portion of gas hot water heater exhaust vent tubing. Cold water tubing is wound around the outside of a tube of the same interior diameter and vertical orientation as the exhaust vent tube that typical gas hot water heaters are designed to operate with. Said vent tube is insulated, double-walled, or is otherwise of a sufficient thickness and/or appropriate material composition so as to prevent condensation occurring on its interior surfaces, and may contain small vents or perforations that allow hot exhaust gases to communicate with the cold water tubing. An insulating jacket is located proximally to the cold water tubing whereby the insulating jacket, cold water tubing and vent tube portion are enclosed within a housing portion. The present invention is meant to easily replace an existing section of exhaust venting typically used in a consistent vertical orientation with a common gas hot water heater. | 11-15-2012 |
20140123915 | ECONOMIZER ARRANGEMENT FOR STEAM GENERATOR - An economizer arrangement particularly suitable for new or retrofit application to existing steam generators provides a water cooled stringer support tube system which can accommodate firing a wide range of fuels with varying characteristics in the steam generator. The economizer arrangement according to the present invention is particularly suited for retrofit applications to large supercritical steam generators. The use of water cooled stringer tube supports allows for higher flue gas temperatures in comparison to conventional non-cooled mechanical economizer supports. These features are provided in a design which fits within the existing economizer envelope of the steam generator. | 05-08-2014 |