71 results about "Fossil fuel power plant" patented technology

An integrated power production system including a fossil fuel power plant for processing fossil based fuel such as coal or natural gas arranged in tandem with a carbonate fuel cell having an anode and a cathode section. The flue gas of the power plant serves exclusively as the inlet gas for the cathode section of the fuel cell. Anode exhaust gas leaving the anode section of the fuel cell is subjected to processing including sequestration of the carbon dioxide in the exhaust gas.

A method of remediating and recovering energy from combustion products from a fossil fuel power plant having at least one fossil fuel combustion chamber, at least one compressor, at least one turbine, at least one heat exchanger and a source of oxygen. Combustion products including non-condensable gases such as oxygen and nitrogen and condensable vapors such as water vapor and acid gases such as SO_X and NO_X and CO₂ and pollutants are produced and energy is recovered during the remediation which recycles combustion products and adds oxygen to support combustion. The temperature and/or pressure of the combustion products are changed by cooling through heat exchange with thermodynamic working fluids in the power generation cycle and/or compressing and/or heating and/or expanding the combustion products to a temperature/pressure combination below the dew point of at least some of the condensable vapors to condense liquid having some acid gases dissolved and/or entrained and/or directly condense acid gas vapors from the combustion products and to entrain and/or dissolve some of the pollutants while recovering sensible and/or latent heat from the combustion products through heat exchange between the combustion products and thermodynamic working fluids and/or cooling fluids used in the power generating cycle. Then the CO₂, SO₂, and H₂O poor and oxygen enriched remediation stream is sent to an exhaust and/or an air separation unit and/or a turbine.

A method of growing photosynthetic organisms comprising providing the organisms with flue gases from a fossil-fuel power plant, the gases being previously treated by desulfurization. The carbon dioxide (CO₂) concentration of the flue gases may be increased over the CO₂ concentration as released from the power plant. Also disclosed is a method for producing ω fatty acids and bio-fuels comprising growing microalgae by providing said microalgae with flue gases from a fossil-fuel power plant.

There is described a method and apparatus for controlling the combustion by-product formation rate in at least one burner of a fossil fuel fired power plant. The burner has an associated flame scanner which is focused on a small area of the burner flame to obtain an image signal of the flame. A flame signal that represents properties of temporal combustion in the visible light spectrum of the burner is generated from the image signal. Combustion turbulence at the burner is analyzed from the flame signal by a dynamic invariant that has a relationship to the combustion by-product values and different combustion by-product levels at the burner and the combustion turbulence is correlated to the combustion by-product formation rate at the burner. The method and apparatus can also be used to correlated the combustion turbulence at a multiplicity of burners to the associated combustion by-product formation rate.

A power plant system including a fossil fuel fired power plant (6) for the generation of electricity, a carbon dioxide capture and compression system (5, 13), and an external heat cycle system has at least one heat exchanger (1,2,3) for the heating of the flow medium of the external heat cycle system. The heat exchanger (1,2,3) is connected to a heat flow from the CO₂ capture plant (5) or a CO₂ compression unit (13). A return flow from the heat exchanger (1,2,3) is led to the CO₂ capture and compression system (5,13) or to the power plant (6). The power plant system allows an increase in overall efficiency of the system.

This invention that provides system, method & apparatus for Real Time integration and Analytics (RETINA) to enable proactive decision synchronization in real time in order to minimize the operational risk and maximize the process productivity for process industries such as Oil & Gas Exploration and Fossil fuel power plants is disclosed. RETINA generates and synchronizes the decisions that affect the performance and profitability of business operations in real time and helps in analysis that are essential for any successful business operations. RETINA provides methods and apparatus that combines data from several types of data sources, build models for identifying impending failures, predicting a future state of the process from currently measured process data and provide decision options to business users so that any unwanted opportunity loss such as downtimes or critical equipment failures that are operations risks would be eliminated. RETINA provides methods and apparatus to ensure that correct decisions are taken at the appropriate instant of time with right amount of data to the pertinent personnel to eliminate inefficiencies in operations and performance resulting in tangible profitability.

Power from wind, solar, and other intermittent energy sources cracks carbon dioxide, NOx, SOx, and other emissions from fossil fuel power plants, which provide baseload power to the grid. By this hybrid power system, intermittent sources can be integrated in power generation without compromising the reliability of the grid and without long power line connections. Carbon dioxide becomes, in effect, a storage medium for energy produced by intermittent sources. The CO₂ can be pipelined to sites where wind, solar, tidal or and other intermittent energy sources are available, or power lines can be run from such intermittent sources to convenient sites for cracking.

The invention relates to an ultra-clean discharge method for a fluidized bed boiler. The ultra-clean discharge method comprises the following steps of: carrying out in-furnace primary desulfurization in a dense-phase region of the fluidized bed boiler; carrying out primary denitration based on SNCR on the outlet of a furnace cavity; carrying out high-temperature dust removal on a smoke gas which is subjected to the in-furnace primary desulfurization and the primary denitration, and then carrying out secondary denitration based on SCR; carrying out heat exchange on the smoke gas subjected to the secondary denitration to normal smoke discharge temperature, and introducing the smoke gas into a low-temperature dust remover for secondary dust removal; delivering the smoke gas subjected to the secondary dust removal into a desulfurizing system for secondary desulfurization. The invention also provides a corresponding system. According to the method and the system provided by the invention, two-stage dust removal is performed by adopting high-low temperature dust removal devices, combined denitration is performed by combining SNCR and SCR manners, desulfurizing is realized by adopting in-furnace and out-of-furnace manners and accurate control is carried out through a combustion optimization technology and environmental-friendly system parameter, so that the discharge of NOx and SO2 reaches the discharge standard of a gas turbine unit in a key region of the 'fossil-fuel power plant atmospheric pollutant discharge standard' GB13223-2011; in addition, the corresponding system provided by the invention has the advantages of high denitration efficiency, high desulfurization effect, high system reliability, high working condition adaptability, good NOx and SO2 discharge controllability, long operation period, low operation cost and the like.

A method and corresponding apparatus for separation of carbon dioxide from an exhaust gas of a fossil-fired power are provided. In an absorption process, the exhaust gas containing carbon dioxide is brought into contact with an absorption medium so that the absorption medium is laden with carbon dioxide. In a desorption process, vapor from a water/steam circuit of the fossil-fired power plant is heated, wherein a laden absorption medium is regenerated. In a subsequent expansion process, the regenerated absorption medium is expanded so that a vapor and an expanded absorption medium are formed, wherein the vapor is recirculated into the desorption process. The laden absorption medium is divided into a first part stream and a second part stream. Only the second part stream is brought into heat-exchanging contact with the expanded absorption medium. The first and second part streams are supplied to the desorption process at different process stages.

A fossil fuel fired power plant for the generation of electrical energy comprises a water steam cycle and a plant (10) for the capture of CO2 from exhaust gases emitted by the power plant and a steam jet ejector (24) configured and arranged to receive an input steam flow from a low- or intermediate pressure extraction point in the power plant and to increase its pressure. It is further arranged to receive motive steam (25) from a further extraction point in the power plant. A steam line (27, 22) directs the steam of increased pressure from the steam jet ejector (24) to the CO2 capture plant (10). The power plant according to this invention allows the use of low-pressure steam for the operation of the CO2 capture plant, where the extraction of such steam affects the overall efficiency of the power plant to a lesser degree than in power plant of the state of the art.

A power producing system adapted to be integrated with a flue gas generating assembly, the flue gas generating assembly including one or more of a fossil fueled installation, a fossil fueled facility, a fossil fueled device, a fossil fueled power plant, a boiler, a combustor, a furnace and a kiln in a cement factory, and the power producing system utilizing flue gas containing carbon dioxide and oxygen output by the flue gas generating assembly and comprising: a fuel cell comprising an anode section and a cathode section, wherein inlet oxidant gas to the cathode section of the fuel cell contains the flue gas output from the flue gas generating assembly; and a gas separation assembly receiving anode exhaust output from the anode section of the fuel cell and including a chiller assembly for cooling the anode exhaust to a predetermined temperature so as to liquefy carbon dioxide in the anode exhaust, wherein waste heat produced by the fuel cell is utilized to drive the chiller assembly.

The problem of correct wire selection of a branch with a ground fault of a direct current system of a power system is always a difficult problem for the power system. Comprehensive reasons on a plurality of aspects cause the phenomenon that the correct wire selection is difficult. The safety and the reliability of the direct current system affect the operation of power plants and transformer stations and are related to the safe production of the whole large power system. The ground fault detection and calibration method and the device for the direct current system improve the insulation supervision alarm value of a bus to the level of 100KO from 48KO. The ground fault detection and calibration method and the device are based on the requirements of (DL/T5044-95) technical regulations for design of direct current systems of fossil fuel power plants and transformer substations, and the corresponding branch insulating detection ability is improved to the level of 300KO from 20KO, and the branch insulating detection horizontally covers all the fault phenomena of the insulating alarm value of the direct current system. The calibration method and the device are used for detecting the calibration of a direct current insulating supervision device before access network. The invention aims at ensuring the safety of the system and the standards of access network.

The present invention provides for the use of a metal-organic framework (MOF) in removing particular chemical species or compounds, in particular oxy-anions, from a liquid or liquid stream. In some embodiments, the MOF is a Zr-based MOF, such as NU-1000, and the oxy-anions that are removed include, include, for example, oxy-anions of selenium, including selenite (SeO₃²⁻) and selenate (SeO₄²⁻); oxy-anions of antimony, including oxy-anions in either the Sb[III] (antimonite) or the Sb[V] (antimonate) redox state; and oxy-anions of lead, including oxy-anions in either the Pb[II] or the Pb[IV] redox state, such as Pb(OH)₆²⁻, Pb(OH)₆⁴⁻, PbO₃²⁻, and PbO₂²⁻. The Zr-based MOF, including NU-1000 can be used to remove these oxy-anions from various liquid streams in industrial processes such as a nuclear and fossil fuel power plants, including the latter's flue gas desulfurization system.

A hybrid power plant is disclosed wherein a first power plant produces secondary steam of a first, relatively low temperature using a renewable source of energy such as geothermal or solar. The steam from the renewable source plant is passed through a fossil fuel power plant that has an operating temperature higher than that of the first temperature which results in superheating the first temperature steam to the higher temperature in the fossil fuel power plant. Higher efficiencies and reductions in emissions are obtained.

The invention discloses a supercritical carbon dioxide geothermal power generation system and method. The system comprises a flashing loop valve, a flashing tank, a supercritical carbon dioxide loop valve, a turbine, an electric generator, a precooler, a compressor, an after-cooler, a fossil fuel power plant exhaust gas carbon dioxide collecting and treating device, an injection well, an output well and the like. The system can realize the purpose of developing geothermal resources and also can realize geological sequestration of carbon dioxide in exhaust gas of a fossil fuel power plant, so that the situation that the thermal power plant and geothermal exploitation are combined to generate electricity so as to realize zero emission of carbon dioxide becomes possible.

A method for retrofitting an existing steam turbine with a steam extraction facility is provided. The stem turbine has a plurality of pressure stages and is integrated into a fossil-fired steam power plant. A steam extraction line is connected to one pressure stage or between two pressure stages of the steam turbine, and a heating steam turbine is connected into the steam extraction line.

The present invention provides systems and methods for organic particulate filtration. An organic particulate filtration system is implemented within a fossil fuel power plant combustion system. The filtration system comprises a gas flow, in which gas are entrained particulates. The filtration system has a collection hopper located proximate a precipitator collection area. Within the collection hopper, a particulate baffle is provided in a downward-angled orientation. The particulate baffle is enabled to trap particulate, such as organic particulate, in the collection hopper, thereby preventing particulate re-entrainment in the gas flow.

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.

An exemplary fossil fuel fired power plant is disclosed with minimum impact of the CO2 capture system on a power part of the plant. A power plant is disclosed which is ready for the retrofit of a CO2 capture plant, and a method is disclosed for retrofitting an existing plant into a power plant with CO2 capture. A power plant part is disclosed which can provide steam and power to operate CO2 capture system, and provide a CO2 capture system, which has the capacity to remove CO2 from flue gas flow of the power part, and of the additional power plant part.