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| Number | Title | Issue Date |
| 8181463 | Direct heating organic Rankine cycle The present invention provides an organic Rankine cycle power system, which comprises means for superheating vaporized organic motive fluid, an organic turbine module coupled to a generator, and a first pipe through which superheated organic motive fluid is supplied... | 05/22/2012 |
| 8104283 | Steam temperature control in a boiler system using reheater variables A technique of controlling a boiler system such as that used in a power generation plant includes using manipulated variables associated with or control inputs to a reheater section of the boiler system to control the operation of the furnace, and in particular to c... | 01/31/2012 |
| 8099959 | Heat recovery equipment Heat recovery equipment recovers heat from flue gas. The heat recovery equipment includes a power generation plant that drives a steam turbine by superheated steam produced in a boiler, and an exhaust-gas treatment line that treats flue gas output from the boiler. T... | 01/24/2012 |
| 8087248 | Method and apparatus for the utilization of waste heat from gaseous heat sources carrying substantial quantities of dust An apparatus, system and method for transferring heat from a hot flue gas stream from a cement plant including large particles and dust to a working fluid of a power plant via a high temperature heat transfer fluid without exposing all or most of the equipment to th... | 01/03/2012 |
| 8082737 | Module-based oxy-fuel boiler A boiler system for producing steam from water includes a plurality of serially arranged oxy fuel boilers. Each boiler has an inlet in flow communication with a plurality of tubes. The tubes of each boiler form at least one water wall. Each of the boilers is configu... | 12/27/2011 |
| 8024930 | Heat integration in coal gasification and methanation reaction process A combined Gasification, methanation and power island steam turbine system. The system includes a gasification portion, the methanation portion and a steam turbine portion. The Gasification portion includes the new heat recovery design and associated controls for ob... | 09/27/2011 |
| 8006496 | Closed loop scroll expander engine Apparatuses and methods related to an engine for converting heat into mechanical output using a working fluid in a closed circulating system are disclosed. In some embodiments, the engine includes a pump to pressurize the working fluid, a regenerative heat exchanger... | 08/30/2011 |
| 7975483 | Steam power plant and also method for retrofitting a steam power plant The invention relates to a steam power plant comprising at least one steam heater for preparing compressed steam, a main turbine, which is connected downstream of the steam heater, is arranged on a main drive shaft and is a high-pressure or medium-pressure turbine, ... | 07/12/2011 |
| 7886538 | Method for operating a steam power plant, particularly a steam power plant in a power plant for generating at least electrical energy, and corresponding steam power plant The invention relates to a method for operating a steam power station and a power plant as well as a corresponding steam power station. According to the invention, essentially all of the water that is drained from at least one pressure stage of the steam power stati... | 02/15/2011 |
| 7870735 | Closed loop expandable gas circuit for power generation The invention relates to an apparatus that includes a first heat exchanger for heating a first heat transfer medium in a first form from a first temperature to a second higher temperature to provide an increased pressure gas, a first mechanical device configured to ... | 01/18/2011 |
| 7861527 | Reheater temperature control A thermal power generation apparatus comprises a boiler (15) and multiple turbine sets for high, intermediate and lower steam pressure operation. Steam exhausted from the high pressure turbine (HP), and reduced in both pressure and temperature, is returned to... | 01/04/2011 |
| 7861526 | Steam generation plant and method for operation and retrofitting of a steam generation plant The invention relates to a steam generation plant, comprising a steam generator (1) with a combustion chamber (8), an evaporator, a superheater (9), an intermediate superheater (12), a condenser (14), a feed water preheater (16,... | 01/04/2011 |
| 7856822 | Heat regenerative engine A heat regenerative engine uses water as both the working fluid and the lubricant. In operation, water is pumped from a collection pan and through a coil around a cylinder exhaust port, causing the water to be preheated by steam exhausted from the cylinder. The preh... | 12/28/2010 |
| 7856823 | Pre-heater coil in a heat regenerative engine A pre-heater arrangement in a heat regenerative engine for pre-heating water in its delivery path from a condenser sump to a combustion chamber. The engine includes a steam generator, including the combustion chamber, for producing pressurized steam. The engine furt... | 12/28/2010 |
| 7849692 | Segmented heat exchanger A segmented heat exchanger system for transferring heat energy from an exhaust fluid to a working fluid. The heat exchanger system may include a first heat exchanger for receiving incoming working fluid and the exhaust fluid. The working fluid and exhaust fluid may ... | 12/14/2010 |
| 7827792 | Refrigerant cooled main steam condenser binary cycle This invention reduces the fuel consumption of the modern day power plant by lowering the main steam condenser operating pressure. The main steam condenser is a heat exchanger located in the power plant steam system for condensing steam. The main steam enters the ma... | 11/09/2010 |
| 7827791 | Advanced power recovery and energy conversion systems and methods of using same Disclosed herein are various systems and methods for producing mechanical power from a heat source. The system may include a heat recovery heat exchanger, a turbine, a condenser heat exchanger, and a liquid circulating pump, etc. In other embodiments, a desuperheate... | 11/09/2010 |
| 7827793 | Power generation system To provide a power generation system that prevents a reduction in the efficiency of a steam turbine due to an aperture adjustment of a turbine governing valve. There is provided a power generation system comprising: a furnace in which a solid fuel or a liquid fuel i... | 11/09/2010 |
| 7793501 | Apparatus for steam attemperation using fuel gas heater water discharge to reduce feedwater pump size Attemperation systems and methods for cooling steam bypassed from a steam turbine during tripping of the steam turbine are provided in the disclosed embodiments. The systems may be configured to deliver water discharged from a fuel gas heater to a bypass attemperato... | 09/14/2010 |
| 7690201 | Method of efficiency and emissions performance improvement for the simple steam cycle A method for improvement of a fossil fuel energy conversion into electrical energy for the simple sub- and supercritical steam cycle is proposed through introduction of additional regenerative cycle duties to improve the evaporation rate per unit of fuel burned, thu... | 04/06/2010 |
| 7681396 | Steam turbine with heating steam extraction and power plant with steam turbine A steam turbine (10) with heating steam extraction includes a plurality of turbine sections (11, 12, 15, 17, 19, 20) for the high pressure, medium pressure and low pressure ranges, which turbine sections (11, 12, 15, 17, 19, 20) are arranged in ... | 03/23/2010 |
| 7640750 | Apparatus and method for producing energy at a pulp mill A spent liquor recovery boiler in the pulp and paper industry including a water/steam circulation system having superheaters, the circulation system connected to a steam turbine comprising a high-pressure part, and a furnace for burning spent liquor to produce flue ... | 01/05/2010 |
| 7640749 | Moisture separator and reheater Contrasted to the prior art, the present invention presents a path for the cycle steam having the fewest possible changes in direction to minimize parasite pressure losses. This invention accommodates proportioning the flow areas of the moisture separator—reheater... | 01/05/2010 |
| 7607304 | Steam turbine system A high pressure steam turbine is connected to a high pressure steam conduit and has a high pressure turbine output shaft connected to a system power output shaft, a bleed output, and a first output conduit for the output of steam at a reduced pressure and temperatur... | 10/27/2009 |
| 7581395 | Heat recovery equipment Heat recovery equipment recovers heat from flue gas. The heat recovery equipment includes a power generation plant that drives a steam turbine by superheated steam produced in a boiler, and an exhaust-gas treatment line that treats flue gas output from the boiler. T... | 09/01/2009 |
| 7568342 | Supply pump actuating turbine A supply pump actuating turbine, in particular for a power plant, that includes at least two jet sectors for introducing a working gas into the turbine, a line system for connecting the at least two jet sectors to at least two different sources of working gas, and a... | 08/04/2009 |
| 7562531 | Method and system for operative reconversion of pairs of pre-existing steam turbo-units Method and system, in which a pair of pre-existing steam turbo-units, a first one of which is formed by a first steam turbine and a first electric generator connected on a first common shaft and a second one of which is formed by a second steam turbine and by a seco... | 07/21/2009 |
| 7516620 | Module-based oxy-fuel boiler A boiler system for producing steam from water includes a plurality of serially arranged oxy fuel boilers. Each boiler has an inlet in flow communication with a plurality of tubes. The tubes of each boiler form at least one water wall. Each of the boilers is configu... | 04/14/2009 |
| 7493764 | Electric power generation/hydrogen production combination plant An electric power generation/hydrogen production combination plant comprises a feed water pump, a feed water heater arranged upstream relative to the feed water pump to heat feed water, a reformer for producing formation gas containing hydrogen by processing at leas... | 02/24/2009 |
| 7487641 | Microfabricated rankine cycle steam turbine for power generation and methods of making the same In accordance with the present invention, an integrated micro steam turbine power plant on-a-chip has been provided. The integrated micro steam turbine power plant on-a-chip of the present invention comprises a miniature electric power generation system fabricated u... | 02/10/2009 |
| 7475544 | Efficiency improvement for a utility steam generator with a regenerative air preheater A steam generator system comprising a coal-fired steam generator in fluid communication with a regenerative air preheater. The steam generator being adapted to receive a flow of heated combustion air exiting from the regenerative air preheater and to discharge a flo... | 01/13/2009 |
| 7458219 | Steam power plant provided with a retrofit kit and method for retrofitting a steam power plant A steam power plant with retrofit kit has a steam generator (1) with superheater, a steam turbine set including condensation installations (11), connecting pipelines, auxiliary devices and a generator (10). The steam power plant (22) is d... | 12/02/2008 |
| 7426832 | Universal thermodynamic gas turbine in a closed Carnot cycle A closed-cycle gas turbine power generator system with a combined cycle system with a neutral gaseous primary motive medium and a secondary phase change medium with a lower pressure sub-system having a counter-rotating compressor module in combination with a counter... | 09/23/2008 |
| 7398651 | Cascade power system A cascade power system and a method are disclosed for using a high temperature flue gas stream to directly or indirectly vaporize a lean and rich stream derived from an incoming, multi-component, working fluid stream, extract energy from these streams, condensing a ... | 07/15/2008 |
| 7392656 | Steam turbine plant A steam turbine plant includes an extraction system and a control system for controlling the steam extraction. The extraction system includes an extraction steam flowmeter and a stop valve. The control system sets a warning flow and an extracted steam stop flow for ... | 07/01/2008 |
| 7373904 | Stratified vapor generator A stratified vapor generator (110) comprises a first heating section (H1) and a second heating section (H2). The first and second heating sections (H1, H2) are arranged so that the inlet of the second heating sectio... | 05/20/2008 |
| 7356993 | Method of converting energy The invention provides a method of converting heat energy to a more usable form using a multi-component working fluid mixture that contains ammonia and water. The working fluid is operated in a thermodynamic cycle that includes liquid compression (30), vapori... | 04/15/2008 |
| 7350471 | Combustion system with recirculation of flue gas An improved combustion method and corresponding apparatus is disclosed, where the method includes oxidizing a fuel in a combustion chamber with an oxidizing stream including an air stream and a first recycled flue gas stream and mixing a produced hot flue gas stream... | 04/01/2008 |
| 7347057 | Control of dual-heated absorption heat-transfer machines An absorption, heat-transfer system with an operationally interconnected generator, absorber, condenser, and evaporator; at least two separate heat sources for heating the generator; and a controller for controlling the heat sources. The controller, e.g., a programm... | 03/25/2008 |
| 7340897 | Method of and apparatus for producing power from a heat source A method for producing power from a heat source comprises the steps of: heating an intermediate fluid with heat from the heat source and producing a vaporized intermediate fluid in an intermediate fluid heater/vaporizer. Heat from the vaporized intermediate fluid va... | 03/11/2008 |
