73results about "Direct carbon-dioxide mitigation" patented technology

Systems and methods for injecting hydrogen into a natural gas pipeline to lower the carbon intensity of the resulting fuel blend while achieving the required energy output thereof for the end user. In one embodiment a blend ratio for the blended fuel comprising hydrogen and natural gas is determined based at least in part on a minimum energy output for fuel combusted at an end-use location connected to the natural gas pipeline so that the blended fuel (i) has a lower carbon intensity than a natural gas stream flowing in the natural gas pipeline, and (ii) provides at least the minimum energy output when combusted at the end-use location. Further, one or more embodiments include adjusting a control valve of a hydrogen injection assembly connected to the natural gas pipeline upstream of the end-use location based at least in part on the blend ratio to thereby mix hydrogen into the natural gas pipeline and produce the blended fuel.

Systems and methods for injecting hydrogen into a natural gas pipeline to lower the carbon intensity of the resulting fuel blend while achieving the required energy output thereof for the end user. In one embodiment a blend ratio for the blended fuel comprising hydrogen and natural gas is determined based at least in part on a minimum energy output for fuel combusted at an end-use location connected to the natural gas pipeline so that the blended fuel (i) has a lower carbon intensity than a natural gas stream flowing in the natural gas pipeline, and (ii) provides at least the minimum energy output when combusted at the end-use location. Further, one or more embodiments include adjusting a control valve of a hydrogen injection assembly connected to the natural gas pipeline upstream of the end-use location based at least in part on the blend ratio to thereby mix hydrogen into the natural gas pipeline and produce the blended fuel.

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.

The power plant includes a gas turbine engine including a compressor and a turbine. The compressor includes a compressor outlet. The turbine exhausts a first exhaust gas stream therefrom. The heat recovery steam generator extracts heat from the first exhaust stream and discharges a second exhaust stream therefrom. The cooler cools the second exhaust gas stream defining 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 toward the compressor. The recirculation compressor selectively pressurizes a first portion of the cooled exhaust stream for discharge to the compressor outlet.

An integrated process that combines Atmospheric Carbon Dioxide removal and sequestration using algae related technologies with the production and distribution of electrical power through conventional or Zero Emission methods and an underground Electric Pipeline along with the production, transportation and processing of oil, natural gas, renewable methane, renewable diesel, renewable gasoline, sustainable aviation fuel, salt water, fresh water, carbon dioxide and related coproducts and services. The process can eliminate all greenhouse gas emissions, while creating Emissions Free Energy, EFE, coproducts such as fresh water, ammonia fertilizers, plastics, chemicals, renewable energy resources, electricity, electrical energy storage, and an electrical driven transportation system.

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.

Method for calcination in an annular shaft furnace comprising a supply of material to be calcined at the top of an annular space (3) of the furnace into which the material descends, an introduction in (5) of first and in (6) of second combustion flue gases into this annular space, a discharge at the top of the furnace in (12) of an upper gas stream, a removal in (18) of a portion of the upper gas stream, a formation of a first oxidizing mixture by mixing this portion of the upper gas stream with pure dioxygen (19) and, to form the second combustion flue gases, a combustion of a fuel in this first oxidizing mixture, as well as an elimination in (20) of a lower gas stream containing the air for cooling the product, after said cooling.

To provide building emission processing and sequestration systems, which can address carbon dioxide generation from combustion of fossil fuels and proliferation thereof in metropolitan areas.SOLUTION: There are provided systems and / or methods for capture of carbon dioxide from flue gas generated within a building. The systems or methods can include: a step of providing air and fuel to a combustion burner; a step of combusting the air and fuel within the combustion burner; a step of monitoring the amount of free oxygen in the burner; and a step of controlling the amount of air and fuel provided to the burner to maintain a free oxygen amount of about 3%.SELECTED DRAWING: Figure 3C

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.

Techniques for providing carbon dioxide include generating thermal energy, an exhaust fluid, and electrical power from a power plant; providing the exhaust fluid and the generated electrical power to an exhaust fluid scrubbing system to separate components of the exhaust fluid; capturing heat from a source of heat of an industrial process in a heating fluid; transferring the heat of the industrial process captured in the heating fluid to a carbon dioxide source material of a direct air capture (DAC) system; providing the generated electrical power from the power plant to the DAC system; providing the thermal energy from the power plant to the DAC system; and separating, with the transferred portion of the heat of the industrial process and the provided thermal energy, carbon dioxide from the carbon dioxide source material of the DAC system.

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

A carbon capture system includes a CO2-containing flue gas from any CO2 producing source connected to a first flue gas compressor of a gas turbine with a corresponding first turbine expander and a generator driven by said gas turbine. The gas turbine includes a first burner and a second burner, wherein the second burner utilizes at least a non-carbon fuel such as Hydrogen (H2) or Ammonia (NH3), so as for increasing a temperature of a first relatively hot compressed CO2-lean flue gas to a second relatively hotter compressed CO2-lean flue gas for being fed into said first expander.

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.

To provide systems and methods useful for power production.SOLUTION: A power production cycle comprising a first combustor (102) and a turbine (103) and utilizing CO2 as a working fluid may be configured for simultaneous hydrogen production in an additional hydrogen production unit. Substantially all carbon generated from combustion in power production and hydrogen production is collected in the form of carbon dioxide. Further, produced hydrogen (optionally mixed with nitrogen (160) 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.SELECTED DRAWING: Figure 1

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 process comprising the following steps: a) calcination of a metal carbonate by combustion of a fuel in the presence of a mixture of oxygen, water vapour and carbon dioxide, to generate a metal oxide, water vapour, carbon dioxide and heat; b) using the heat generated to drive an oxygen generation reaction; and c) use of the oxygen generated in step b) in calcination step a). The use of the process on carbon dioxide sequestration and / or in oxygen generation.