| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 060647000 | Including operating at or above critical pressure | 8 |
| 20110120127 | LOW ENERGY PROCESS FOR THE PRODUCTION OF AMMONIA OR METHANOL - A process for utilizing synthesis gas heat for the generation of supercritical steam in a low energy ammonia or methanol plant is disclosed. The process involves a reforming or partial oxidation stage, at least one supercritical steam generator having a shell side and a tube side, at least one superheater, at least one back pressure turbine, at least one extraction and condensing turbine, and at least one boiler feedwater pump. The synthesized synthesis gas is sent to the shell side of the supercritical steam generator, and the supercritical steam generator is fed with pressurized feedwater. The feedwater flow is adjusted to maintain the steam temperature at the exit of the supercritical steam generator in the range of 375-500° C. The supercritical steam is generated in the supercritical steam generator at a pressure of 225-450 bar, the supercritical steam is further heated in a superheater to a temperature of 500-750° C., and the supercritical steam generated in the superheater is fed to a back pressure turbine. | 05-26-2011 |
| 20120042653 | Hydrothermal Power Plant - A super critical water oxidation reactor (SCWOR) serves as an extremely efficient power source in a power plant by coupling the various output streams in thermal communication with multiply staged or cascaded compressor-expanders that are themselves mechanically coupled to a motor or generator. In one embodiment heat from re-circulating liquid brine loop either directly or indirectly preheats the exhaust gases of the SCWOR prior to expansion. In another embodiment the heat of compression is used to preheat the effluent of an expander prior to a subsequent expansion stage. The re-circulating brine loop also preferably preheats expander effluent prior to a subsequent expansion stage. | 02-23-2012 |
| 20120085095 | UTILIZATION OF PROCESS HEAT BY-PRODUCT - Heat recovery systems and methods for producing electrical and/or mechanical power from a process heat by-product are provided. Sources of process heat by-product include hot flue gas streams, high temperature reactors, steam generators, gas turbines, diesel generators, and process columns. Heat recovery systems and methods include a process heat by-product stream for indirectly heating a working fluid of an organic Rankine cycle. The organic Rankine cycle includes a heat exchanger, a turbine-generator system for producing power, a condenser heat exchanger, and a pump for recirculating the working fluid to the heat exchanger. | 04-12-2012 |
| 20130098037 | ADVANCED SUPER-CRITICAL CO2 EXPANDER-GENERATOR - An expander-generator is disclosed having an expansion device and a generator disposed within a hermetically-sealed housing. The expansion device may be overhung and supported on or otherwise rotate a hollow expansion rotor having a thrust balance seal being arranged at least partially within a chamber defined in the expansion rotor. Partially-expanded working fluid is extracted from an intermediate expansion stage and a first portion of the extracted working fluid is used cool the generator and accompanying radial bearings. A second portion of the extracted working fluid may be introduced into the chamber defined within the expander rotor via a conduit defined in the thrust balance seal chamber. The second portion of extracted working fluid minimizes unequal axial thrust loads on the expander rotor due to the overhung arrangement. | 04-25-2013 |
| 20130213040 | METHOD AND SYSTEM FOR GENERATING POWER FROM LOW- AND MID- TEMPERATURE HEAT SOURCES - A method and system for generating power from low- and mid-temperature heat sources using a zeotropic mixture as a working fluid. The zeotropic mixture working fluid is compressed to pressures above critical and heated to a supercritical state. The zeotropic mixture working fluid is then expanded to extract power. The zeotropic mixture working fluid is then condensed, subcooled, and collected for recirculation and recompression. | 08-22-2013 |
| 20140102101 | Supercritical Carbon Dioxide Power Cycle for Waste Heat Recovery - Aspects of the invention disclosed herein generally provide heat engine systems and methods for recovering energy, such as by generating electricity from thermal energy. In one configuration, a heat engine system contains a working fluid (e.g., sc-CO | 04-17-2014 |
| 20140208751 | PROCESS FOR CONTROLLING A POWER TURBINE THROTTLE VALVE DURING A SUPERCRITICAL CARBON DIOXIDE RANKINE CYCLE - Embodiments of the invention generally provide a heat engine system, a method for generating electricity, and an algorithm for controlling the heat engine system which are configured to efficiently transform thermal energy of a waste heat stream into electricity. In one embodiment, the heat engine system utilizes a working fluid (e.g., sc-CO | 07-31-2014 |
| 20140352307 | SYSTEM AND METHOD OF WASTE HEAT RECOVERY - A Rankine cycle system useful for the conversion of waste heat into mechanical and/or electrical energy is provided. The system features a novel configuration in which a first closed loop thermal energy recovery cycle comprising a first working fluid stream and a second closed loop thermal energy recovery cycle comprising a second working fluid stream interact but do not mix. The two thermal energy recovery cycles interact thermally via heat exchangers, a first heat exchanger configured to transfer heat from the first working fluid stream to the second working fluid stream, and a second heat exchanger configured to transfer heat from the second working fluid stream to the first working fluid stream. In one or more embodiments, the Rankine cycle system is adapted for the use of supercritical carbon dioxide as the working fluid. | 12-04-2014 |
