48results about "Direct carbon-dioxide mitigation" patented technology

Systems and methods include a method for generating optimum de-carbonization investment plans. An optimization objective is determined for reducing carbon dioxide (CO2) emissions of an organization. A CO2 emissions baseline for the organization is determined. An optimum de-carbonization investment plan is generated for the organization using the optimization objective and the CO2 emissions baseline for the organization. The optimum de-carbonization investment plan is configured to minimize life cycle costs of the organization while meeting emission reduction targets of the organization.

Embodiments of the present disclosure are directed to systems and methods of removing carbon dioxide from a gaseous stream using magnesium hydroxide and then regenerating the magnesium hydroxide. In some embodiments, the systems and methods can further comprise using the waste heat from one or more gas streams to provide some or all of the heat needed to drive the reactions. In some embodiments, magnesium chloride is primarily in the form of magnesium chloride dihydrate and is fed to a decomposition reactor to generate magnesium hydroxychloride, which is in turn fed to a second decomposition reactor to generate magnesium hydroxide.

The present disclosure relates to a tubular supply device (1) for supplying gases to a combustion chamber in a heat-generating plant. The supply device comprises a tube (2) in the form of a straight lance and having an outer lateral wall (3) for extending into the combustion chamber from a side wall. The supply device comprises a plurality of nozzle arrangements (4) for expelling the gases into the combustion chamber. Each nozzle arrangement comprises an inner nozzle (5) connectable to an oxygen source and arranged for supplying pure oxygen from said oxygen source into the combustion chamber. Each nozzle arrangement also comprises an outer nozzle (6) connectable in a flue gas recirculation loop of the plant and arranged for supplying flue gas flowing in said flue gas recirculation loop into the combustion chamber.

Systems and methods include a method for generating optimum de-carbonization investment plans. An optimization objective is determined for reducing carbon dioxide (CO2) emissions of an organization. A CO2 emissions baseline for the organization is determined. An optimum de-carbonization investment plan is generated for the organization using the optimization objective and the CO2 emissions baseline for the organization. The optimum de-carbonization investment plan is configured to minimize life cycle costs of the organization while meeting emission reduction targets of the organization.

This gas turbine plant is provided with: a gas turbine; an exhaust line; a waste heat recovery boiler that generates steam from the heat of exhaust gas and guides the exhaust gas to the exhaust line; a carbon dioxide recovery device that recovers carbon dioxide included in the exhaust gas; a heat exchanger that is disposed between the waste heat recovery boiler and the carbon dioxide recovery device and that cools the exhaust gas to a predetermined temperature; and a circulation line that branches from a position between the carbon dioxide recovery device and the heat exchanger

Provided is a tubular supply device for supplying gases to a combustion chamber in a heat-generating plant. The supply device includes a tube in the form of a straight lance and having an outer lateral wall for extending into the combustion chamber from a side wall. The supply device also includes a number of nozzle arrangements for expelling the gases into the combustion chamber. Each nozzle arrangement has an inner nozzle connectable to an oxygen source and arranged for supplying pure oxygen from said oxygen source into the combustion chamber. Each nozzle arrangement also has an outer nozzle connectable in a flue gas recirculation loop of the plant and arranged for supplying flue gas flowing in said flue gas recirculation loop into the combustion chamber.

A power plant includes a gas turbine engine, which includes a compressor and a turbine. The compressor includes a compressor outlet. The turbine discharges a first exhaust gas stream therefrom. A heat recovery steam generator extracts heat from the first exhaust gas stream and discharges a second exhaust gas stream therefrom. A cooler cools the second exhaust gas stream, thereby defining a cooled exhaust gas stream, and discharges the cooled exhaust gas stream. An exhaust gas recirculation line channels a first portion of the cooled exhaust gas stream towards the compressor. A recirculation compressor selectively pressurizes the first portion of the cooled exhaust gas stream for discharge to the compressor outlet.

Systems and / or methods are provided for the capture of carbon dioxide from flue gas generated within a building.

To provide methods, apparatuses, and systems related to electrochemical capture of Lewis acid gases.SOLUTION: Methods, apparatuses, and systems related to electrochemical capture of Lewis acid gases from fluid mixtures are generally described. Certain embodiments are related to electrochemical methods involving selectively removing a first Lewis acid gas from a fluid mixture containing multiple types of Lewis acid gases (e.g., a first Lewis acid gas and a second Lewis acid gas). Certain embodiments are related to electrochemical systems comprising certain types of electro active species having certain redox states in which the species is capable of binding a first Lewis acid gas but for which binding with a second Lewis acid gas is thermodynamically and / or kinetically unfavorable. The methods, apparatuses, and systems described herein may be useful in carbon capture and pollution mitigation applications.SELECTED DRAWING: None

The present disclosure relates to systems and methods useful for power production. In particular, a power production cycle utilizing CO2 as a working fluid may be configured for simultaneous hydrogen production. Beneficially, substantially all carbon arising from combustion in power production and hydrogen production is captured in the form of carbon dioxide. Further, produced hydrogen (optionally mixed with nitrogen received from an air separation unit) can be input as fuel in a gas turbine combined cycle unit for additional power production therein without any atmospheric CO2 discharge.

In a method for physical and thermochemical treatment of biomass, the biomass moisture content is reduced in a dryer and ammonia (NH3) is also released from the biomass during drying. The dried biomass is then either pyrolyzed in a pyrolysis reactor and the pyrolysis gas is forwarded to and combusted in a combustion device to form flue gas, or is combusted in a combustion facility unit to form flue gas. In either case the flue gas is fed to a mixer. Oxygen (O2) is metered to the flue gas in the mixer and is fed directly to the dryer as drying gas. As the drying gas passes through the dryer, the sulfur dioxide (SO2) contained in the drying gas and / or the sulfur trioxide (SO3) chemically reacts with the ammonia (NH3) to form ammonium sulfite ((NH4)2SO3) and / or ammonium sulfate ((NH4)2SO4). Also a treatment facility physically and thermochemically treats the biomass.

To provide methods, apparatuses, and systems related to electrochemical capture of Lewis acid gases.SOLUTION: Methods, apparatuses, and systems related to electrochemical capture of Lewis acid gases from fluid mixtures are generally described. Certain embodiments are related to electrochemical methods involving selectively removing a first Lewis acid gas from a fluid mixture containing multiple types of Lewis acid gases (e.g., a first Lewis acid gas and a second Lewis acid gas). Certain embodiments are related to electrochemical systems comprising certain types of electro active species having certain redox states in which the species is capable of binding a first Lewis acid gas but for which binding with a second Lewis acid gas is thermodynamically and / or kinetically unfavorable. The methods, apparatuses, and systems described herein may be useful in carbon capture and pollution mitigation applications.SELECTED DRAWING: None

The present invention provides a method for supplying oxygen-rich gas to an oxygen-consuming step, which comprises supplying an anode-side feed gas containing CO2 to the anode side of a solid oxide electrolysis cell to generate oxygen-rich gas with a low nitrogen content, and generating oxygen on the anode side of the solid oxide electrolysis cell. In this manner, an anode-side product gas containing at least a portion of the oxygen-rich gas is formed. The oxygen-rich gas has a low nitrogen content, and the temperature of the oxygen-rich gas exiting the solid oxide electrolysis cell is between 600 and 1000°C. This method has several advantages, primarily in terms of energy conservation.

A method and apparatus for summarizing and conveying expected thermal responses is described. Expected thermal responses of a room or an entire structure are calculated based on thermostat setpoints. The expected thermal responses are summarized into an expected thermal response visualization and displayed to a user for easy understanding of current, and future, temperature expectations before or as a room or entire structure is heated or cooled.

A method for isolating substantially pure carbon dioxide from flue gas is provided. The method can include combusting carbon based fuel to form flue gas; cooling the flue gas to provide substantially dry flue gas; removing N2 from the dry flue gas to provide substantially N2 free flue gas CO2; and liquifying the substantially N2 free flue gas CO2 to form substantially pure carbon dioxide.

The present disclosure relates to systems and methods that are useful for controlling one or more aspects of a power production plant. More particularly, the disclosure relates to power production plants and methods of carrying out a power production method utilizing different fuel chemistries. Combustion of the different fuel mixtures can be controlled so that a defined set of combustion characteristics remains substantially constant across a range of different fuel chemistries.

Sweep-based gas separation processes for reducing carbon dioxide emissions from gas-fired power plants. The invention involves at least two compression steps, a combustion step, a carbon dioxide capture step, a power generate step, and a sweep-based membrane separation step. One of the compression steps is used to produce a low-pressure, low-temperature compressed stream that is sent for treatment in the carbon dioxide capture step, thereby avoiding the need to expend large amounts of energy to cool an otherwise hot compressed stream from a typical compressor that produces a high-pressure stream, usually at 20-30 bar or more.

The invention is a CO2 capture system comprising the following features: - a CO2 rich exhaust gas (6g) from an external first source (6s) to the inlet (6) of a compressor (2); and a first CO2 rich gas (6r) compressed at high pressure (P) reaches a manifold (8) to one or more outlets (5) of a housing (10) enclosing at least part of a combustion chamber (11) having a wall (11w), - wherein the combustion chamber (11) comprises a burner (13) arranged to combust fuel (14f) and compressed air (15c) supplied from a fuel line (14) and an air supply pipe (15) respectively at high pressure (P) to form a second CO2 rich gas (15r), - wherein a slit (12) is provided in the wall (11w) in the combustion chamber (11) for the compressed CO2 rich gas (6r) to enter to mix with the other CO2 rich gas (15r) formed in the combustion chamber (11) and cool to a third CO2 rich exhaust gas (60r); - a heat exchanger (16) arranged to operate at high pressure (P) and to exchange heat from the hot CO2 rich exhaust gas (60r) from the combustion chamber (11) with a returning CO2 lean exhaust gas (60L) from a CO2 extraction device (100) mainly at high pressure (P), - wherein the returning, now heated, CO2 lean exhaust gas (60L) is returned via a manifold (9) to an expander (3) and discharged via an outlet (7), the expander driving the compressor (2) and the CO2 extraction device (100).

A system for reducing carbon dioxide emissions from a flue gas generated via combusting a fossil fuel is provided. The system includes a carbonator and a classifier. The carbonator is configured to receive the flue gas and carbon absorbing particles. The classifier is fluidly connected to the carbonator and configured to receive a mixture that includes heat-transferring particles and the carbon absorbing particles. The mixture is fluidized within the classifier via the flue gas at a velocity such that the flue gas entrains and transports the carbon absorbing particles to the carbonator while the heat-transferring particles are not entrained nor transported to the carbonator.

The present invention relates to a method of combusting a fuel gas with a stoichiometric or near stoichiometric amount of molecular oxygen in the presence of a controlled amount of a diluent to enhance the extent of combustion reactions in high heat transfer environment. The energy released is utilized to heat a fluid by direct contact with the flame. The diluent can be different from the fluid to be heated with respect to composition, temperature or pressure. The diluent can be same as or derived from the fluid to be heated.

A method and a plant for capturing CO2 from an incoming flue gas. The flue gas can be exhaust gas from coal and gas fired power plants, cement factories or refineries. The incoming exhaust gas is cooled, mixed with air and compressed, and thereafter introduced into a combustion chamber together with gas and / or liquid fuel. Part of the combustion is achieved by separate burners with cooling / combustion air feed with a volume equal to the volume of CO2 captured. Said burners will elevate the temperature in the combustion chamber allowing combustion of exhaust gas with low oxygen content. CO2 is captured at high partial pressure before expansion by the gas turbine to produce power and generate steam in the heat recovery unit. The gas turbine will operate with high efficiency close to design parameters with respect to inlet temperature, pressure and flow.

A power plant includes a gas turbine engine, which includes a compressor and a turbine. The compressor includes a compressor outlet. The turbine discharges a first exhaust gas stream therefrom. A heat recovery steam generator extracts heat from the first exhaust gas stream and discharges a second exhaust gas stream therefrom. A cooler cools the second exhaust gas stream, thereby defining a cooled exhaust gas stream, and discharges the cooled exhaust gas stream. An exhaust gas recirculation line channels a first portion of the cooled exhaust gas stream towards the compressor. A recirculation compressor selectively pressurizes the first portion of the cooled exhaust gas stream for discharge to the compressor outlet.

The present invention discloses a small domestic waste catalytic pyrolysis treatment system, which includes a pyrolysis furnace, a secondary combustion chamber, a flue gas quenching and acid removal device, a lime powder adding device, a closed domestic waste screening and flue gas tar interception device, a high-voltage electrostatic deacidification, dust removal and dehumidification device, and a chimney that are connected in sequence. According to the characteristics of large porosity of domestic waste and the carbonation reaction of CaO catalyzing the pyrolysis gasification of domestic waste, the present invention uses a closed domestic waste screening and flue gas tar interception device to achieve an effective combination of domestic waste screening, drying and flue gas tar interception, effectively solve the problem of blockage of the subsequent treatment system by tar in the flue gas, improve the operation stability of the system, and at the same time increase the calorific value of domestic waste, the subsequent domestic waste pyrolysis reaction temperature and the hydrogen production efficiency, effectively reduce the content of pollutants such as tar and dioxins in the flue gas, and have significant environmental benefits.

A carbon capture system including a CO2-containing flue gas from any CO2 generation source connected to a first flue gas compressor of a gas turbine having a corresponding first turbine expander and a generator driven by the gas turbine, the gas turbine including a first burner and a second burner, the second burner utilizing at least a non-carbon fuel such as hydrogen (H2) or ammonia (NH3), thereby raising the temperature of the first relatively hot compressed CO2-lean flue gas to a second relatively hotter compressed CO2-lean flue gas that is supplied to the first expander.

To provide a synthetic material production system that eliminates the need for a carbon dioxide recovery unit dedicated to a synthesis plant and can reduce the facility cost, and to provide a carbon dioxide processing system.SOLUTION: A synthetic material production system includes: a synthesis plant in which by synthesizing a hydrogen-containing gas and a carbon dioxide a synthetic material is produced; and a carbon dioxide feed line for feeding the carbon dioxide from a recovery and storage plant that includes a recovery unit for recovering the carbon dioxide from a carbon dioxide-containing gas, and a press-in facility for immobilizing the carbon dioxide recovered in the stratum, to the synthesis plant.SELECTED DRAWING: Figure 1

This exhaust gas processing equipment is provided with an exhaust line through which exhaust gas discharged from a boiler circulates, a carbon dioxide recovering device for recovering carbon dioxide included in the exhaust gas, and an exhaust gas heating device provided downstream of the carbon dioxide recovering device to heat the exhaust gas. The carbon dioxide recovering device includes a first medium line through which a first medium circulates, and a second medium line through which a second medium higher in temperature than the first medium circulates. The exhaust gas heating device includes a first heating unit for heating the exhaust gas by means of heat exchange with the first medium, and a second heating unit for heating the exhaust gas passing through the first heating unit even more by heat exchange with the second medium.

Systems and / or methods are provided for the capture of carbon dioxide from flue gas generated within a building.

To provide a marine offshore system and a method for power generation including a structure placed in an offshore location.SOLUTION: A marine offshore system and a method for power generation includes a structure placed in an offshore location. A power generation module is installed on the structure, the power generation module including a turbine, a power generator connected to the turbine, and a generation source of a turbine power fluid produced from the burning of fossil fuels. A recovery system connected to the generation source to transport carbon dioxide combustion gas is located in the underwater location for the CO2 sequestration.SELECTED DRAWING: Figure 1

A method for capturing CO2 from a flue gas from a district heating plant fired on a carbonaceous fuel, where the flue gas is compressed and thereafter cooled before the flue gas is introduced into an absorber (16), where the flue gas is brought in countercurrent flow to an aqueous CO2 absorbent solution introduced into the absorber (16), to give a lean flue gas that is withdrawn from the absorber (16), reheated against incoming compressed flue gas, and thereafter expanded and released into the atmosphere, where the rich absorbent is introduced into a regenerator (30) and stripped to release CO2, withdrawing the lean absorbent from the regenerator (30) and introduction of the lean absorbent into the absorber (16), where the flow of lean absorbent is split in two, a first flow which is introduced at the top of an absorbent packing (17) in the absorber (16), and a second flow which is cooled against a heat fluid received from the district heating plant an returned thereto, and where the thus cooled absorbent is introduced at the top of a cooler packing (21) at the top of the absorber for cooling and drying of the lean flue gas before being reheated against incoming compressed flue gas, and thereafter expanded and released into the surrounding, and a plant for performing the method are described.

The power plant includes a gas turbine engine including a compressor and a turbine. The compressor includes a compressor outlet. The turbine discharges a first exhaust gas stream. A heat recovery steam generator extracts heat from the first exhaust gas stream and discharges a second exhaust gas stream. A cooling device cools the second exhaust gas stream to provide a cooled exhaust gas stream and discharges the cooled exhaust gas stream. An exhaust gas recirculation line directs a first portion of the cooled exhaust gas stream to the compressor. The recirculation compressor selectively compresses the first portion of the cooled exhaust gas stream and discharges it at the compressor outlet.