27results about "Emission prevention" patented technology

The invention relates to an apparatus for treating a gas stream containing undesired components, such as sulphur dioxide or mercury, the gas stream coming from a combustion unit (10) in which at least one mineral material can be calcined, and which apparatus in particular comprises a first injection device (162) connected to a second gas / particle separation device (140) such that at least part of the first particles injected into the gas stream by the first injection device (162) at least partly consists of a second particle stream coming from the second gas / particle separation device (140).

OBJECT To provide a metal heating furnace that burns ammonia while decreasing nitrogen oxides efficiently and a method of burning ammonia in the metal heating furnace. MEANS OF REALIZING THE OBJECT A metal heating furnace 10 includes a burner nozzle 31, plural injection nozzles 41, 42, 43 for ammonia, and a controlling unit 100. The burner nozzle 31 is provided on a furnace wall 11 and emits flame F, which is used to burn ammonia. The injection nozzles 41, 42, 43 for ammonia are provided on a ceiling wall 13 at intervals in a direction in which the flame F extends, and are used to eject ammonia in a direction perpendicular to the flame F. The controlling unit 100 optimizes an amount of ammonia ejected from each of the injection nozzles 41, 42, 43 for ammonia.

The present invention relates to a method and system for the removal of carbon dioxide (CO2) from an upstream gas with a solvent-based system. Typically, the upstream gas is a flue gas. However, the gas can also be cement-kiln gas, blast furnace gas, syngas, biogas or other gases which require the removal of CO2. In particular, the present invention relates to a method and a system for the regeneration of solvents and the removal of CO2 from CO2 rich solvent streams wherein the method and system use heat from a compressed vapour for the regeneration.

The invention relates to a post-combustion fumes treatment unit (1), comprising a single stack (2), at least one post-combustion fumes inlet (3), at least one CO2-depleted fumes outlet (4), at least one CO2 capture system (5). The invention relates also to a use of a post-combustion fumes treatment unit (1) comprising a single stack (2), at least one post-combustion fumes inlet (3), at least one CO2 capture system (5), at least one CO2-depleted fumes outlet (4). The invention relates to a method (100) for treating post-combustion fumes by a unit (1) for treating post-combustion fumes comprising a single stack (2), at least one post-combustion fumes inlet (3), at least one system (5) for capturing CO2 at least one outlet (4) of fumes depleted in CO2.

Provide is a carbon management system or the like which recovers CO2 from an exhaust gas from a factory group and supplies the CO2 to a plurality of CO2 users. A carbon management system (100) includes: a plurality of CO2 emission facilities (21 to 23) which emit an exhaust gas containing CO2; a processing facility (11) which separates a CO2 gas from the exhaust gas emitted from the CO2 emission facility (21 to 23); a plurality of CO2 utilization facilities (31 to 33) which use the CO2 gas separated by the processing facility (11); conduits (5a to 5d) which guide, to the processing facility (11), the exhaust gas emitted from the plurality of CO2 emission facilities (21 to 23); conduits (5e to 5i) which guide the CO2 gas separated in the processing facility (11) to the plurality of CO2 utilization facilities (31 to 33); a storage facility (12) which is connected to the conduits (5a to 5d) or the conduits (5e to 5i) and stores the CO2 gas; and an information processing device (41) which sets operating conditions of the processing facility (11) and the storage facility (12).

To provide a method for operating a furnace that generates smoke at a temperature of at least 900°C.SOLUTION: A method includes: step (a) for burning fuel with an oxidizer, and generating thermal energy and smoke; step (b) for heating a furnace with a first part of the thermal energy generated in the step (a); step (c) for discharging the smoke generated from the furnace at a temperature of at least 900°C, the discharged smoke including a second part of the thermal energy generated in the step (a); and step (d) for using the second part of the thermal energy generated in the step (a) as a heat source for heating the oxidizer, and decomposing ammonia into a mixture containing hydrogen, nitrogen, and undecomposed ammonia in a decomposition device, at least part of the mixture generated in step (d-ii) being burned as fuel in the step (a) together with at least part of the oxidizer generated and heated in step (d-i).SELECTED DRAWING: Figure 2

The present disclosure provides methods and systems for capturing carbon dioxide. An example system includes: a pyrolysis device configured to produce syngas and bio-oil from biomass; a power generator configured to produce electricity by combusting at least one of the syngas or the bio-oil; and a carbon capture system configured to use the electricity to capture carbon dioxide from a gas.

The present invention relates to a method for compressing carbon dioxide, comprising at least the following steps: a) a step (Comp) of compressing a fluid to a pressure (P1) above 8 bar and strictly below 50 bar; b) a step of cooling the compressed fluid to a temperature (T1') between -50 °C and 15 °C to partially liquefy the fluid; the gas fraction of the fluid is between 1% and 99% by volume; c) a step (PP) of compressing the cooled and compressed fluid to a pressure (P3) strictly lower than the critical pressure of the fluid by multistage compression; d) preferably, a step (Ref2) of cooling the fluid produced by the multistage compression step (PP); at least carbon dioxide is completely liquefied; e) a step (PSP) of compressing the fluid such that the pressure (P4) of the fluid exceeds the critical point of the fluid. The present invention also relates to a transportation and storage method, as well as a system for compressing carbon dioxide.

The system includes a gas treatment system having a gas capture system which includes an absorber, a stripper, a gas circuit through the absorber, and an absorbing fluid circuit through the absorber and stripper. The absorbing fluid is configured to absorb unwanted gases from the gas flowing along the gas circuit, and the stripper is configured to remove unwanted gases from the solvent. The gas treatment system also includes a steam circuit coupled to the stripper of the gas capture system, the steam circuit is configured to supply steam to the stripper from a heat recovery steam generator (HRSG) and / or a steam turbine system.

The present invention relates to a method for melting a vitrifiable material for manufacturing plate glass, the method comprising: (i) preparing a furnace comprising at least one main melting tank equipped with an electric heating means, at least one auxiliary melting tank, a refining tank equipped with an oxygen combustion heating means, and a neck separating the main melting tank and the refining tank; (ii) charging a vitrifiable material, comprising raw material and optionally cullet, into the main melting tank; (iii) charging cullet into the auxiliary melting tank; and (iv) heating with the electric heating means. The process includes the steps of: (v) melting the vitrifiable material charged in the main melting tank and flowing it through the neck to the refining tank; (v) melting the charged cullet in an auxiliary melting tank and flowing it through the neck or to the refining tank; (vi) refining the molten material in the refining tank by heating with an oxygen combustion heating means supplied with gas and / or hydrogen; and (vii) flowing the molten material from the refining tank to the working zone, wherein the electrical input ratio of the furnace is in the range of 50% to 85%, and the total amount of cullet is at least 10% by weight of the total amount of vitrifiable material.

The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.

A scrubber for cleaning exhaust fumes generated by internal combustion engines, in particular for reducing the concentration of the sulfur oxides SOx in exhaust fumes generated by the combustion of high sulfur content fuels, said scrubber comprising a main hollow tubular body, an inlet and an outlet for introducing and discharging said fumes into and from said main hollow tubular body, respectively, and inlet means for introducing at least partially atomized pressurized water into said main hollow body, wherein said inlet means comprise a plurality of nozzles arranged in said main hollow body and each adapted to dispense said at least partially atomized pressurized water.

The invention concerns a carbon dioxide compression method comprising at least the following steps:a) compressing (Comp) the fluid to a pressure (P1) greater than 8 bar and strictly less than 50 bar,b) cooling (Ref1) the compressed fluid to a temperature (T1′) of between −50° C. and 15° C., so as to partly liquefy the fluid, the gas volume fraction of the fluid ranging between 1% and 99%,c) carrying out multiphase compression (PP) of the cooled compressed fluid to a pressure (P3) strictly below the critical pressure of the fluid,d) preferably cooling (Ref2) the fluid from multiphase compression (PP) so as to totally liquefy at least the carbon dioxide,e) compressing (PSP) the fluid so that the fluid pressure (P4) exceeds the critical point of the fluid.The invention also concerns a transport and storage method, as well as a compression system for carbon dioxide.

A method for combusting ammonia provided in a combustion feed (1) using a combustion arrangement (100) comprising a combustion section (110), a flue gas section (120), and a plurality of burners (111, 112) is provided, wherein the plurality of burners (111, 112) are operated using the combustion feed, and wherein a flue gas (2) formed in the combustion section (110) is passed through the flue gas section (120). A first group of the plurality of burners (111) are operated using first ratio of oxygen to ammonia and a second group of the plurality of burners (112) are operated with a second ratio of oxygen to ammonia lower than the first ratio of oxygen to ammonia. A corresponding combustion arrangement (100) is also provided.

The present disclosure provides methods and systems for capturing carbon dioxide. An example system includes: a pyrolysis device configured to produce syngas and bio-oil from biomass; a power generator configured to produce electricity by combusting at least one of the syngas or the bio-oil; and a carbon capture system configured to use the electricity to capture carbon dioxide from a gas.

The invention relates to a plant comprising at least: a gas turbine; a generator; a chimney (16) into which the hot exhaust gas from the gas turbine can be directed; a catalytic converter section (39) in the chimney (16), wherein nozzles (36) are arranged upstream of the catalytic converter section (39) and can inject a liquid in order to reduce the temperature of the hot exhaust gas from the gas turbine; optionally, a steam turbine and a heat recovery steam generator (HRSG).

This denitration device (10) is provided with: an ammonia injection unit (11) for injecting ammonia into an exhaust gas flowing through a duct (3); a mixer (12) which is provided on the downstream side of the ammonia injection unit (11) and mixes the exhaust gas with ammonia; and a denitration catalyst (13) which is provide on the downstream side of the mixer (12), applies resistance to the flow of a mixed fluid that is a mixture of the exhaust gas and ammonia, and is provided over the entire area of a flow path cross-sectional surface of the duct (3). The ammonia injection unit (11) has an ammonia piping (11a) and an injection nozzle (11b) provided in the ammonia piping (11a) and capable of injecting ammonia into the duct (3). The distance A between the ammonia injection unit (11) and the mixer (12) is 10 times to 30 times inclusive larger than the outer diameter d of the ammonia piping (11a). The distance B between the mixer (12) and the denitration catalyst (13) is longer than the distance A between the ammonia injection unit (11) and the mixer (12).

A process for separating carbon dioxide from a combustion exhaust gas flow, wherein an open combustion exhaust gas chimney having a combustion exhaust gas inlet and a combustion exhaust gas outlet is connected via first and second conduits between a first combustion exhaust gas generating unit and a second unit configured to capture carbon dioxide. A booster located in the first conduit is configured to draw combustion exhaust gas from the first unit and maintain a constant pressure within the first unit. Flow measurement, which measures the actual combustion exhaust gas flow rate in the first conduit, is performed in the first conduit upstream of the combustion exhaust gas chimney, the pressure within the first unit is controlled using a control unit, and the actual combustion exhaust gas flow rate in the first conduit is used as an input signal to the control unit.

Example thermal oxidation apparatus, control, and associated methods are disclosed herein. An example apparatus includes a pump fluidly couplable to a pipe, the pump including a nozzle at a first end

The present disclosure relates to the technical field of desulfurization, and discloses a composite material and the use thereof in desulfurization. The composite material contains activated carbon, alkali metal oxides, silicon oxides, iron oxides, and rare earth element oxides, wherein the weight ratio between the activated carbon, iron oxides and rare earth element oxides is 100 : (0.5-5) : (1-10), and the composite material satisfies a certain relationship. Also disclosed in the present disclosure is the use of the composite material in desulfurization. The composite material of the present disclosure, as an adsorbent, has a higher sulfur breakthrough capacity and desulfurization rate.

The combustion system includes a bypass (6) that opens to ambient air during two different operating modes (M1 “conventional combustion”; M2 “oxy-fuel combustion”), the bypass (6) having the function of introducing air into the recycle loop (40) when the discharge valve (V3) is at least partially open and the recycle valve (V2) is open or closed, and discharging an excess (G2) of the combustion gas (G) generated by the combustion device (1) from the recycle loop (40) and supplying another fraction (G1) of the combustion gas (G) generated by the combustion device (1) to the mixer (31) when the discharge valve (V3) is closed and the recycle valve (V2) is open.

The invention relates to arrangements or installations (connection of various systems with their own function and control thereof) in relation to capturing of a gaseous compound, related methods, the underlying chemistry and / or physics and is illustrated for CO2 but not limited thereto as alternative gaseous as Ammonia can also be tackled. The invention pertains to capture of a gaseous compound from off gases and / or air based on electrochemistry.

An apparatus and process can be configured for reduced nitrogen oxide formation during combustion. Embodiments can provide synthetic air to a combustion device so that combustion of a fuel can occur with a substantially low amount of NOx. Some embodiments can provide a reduction in NOx formation by at least 75% and as much as greater than 95% as compared to use of ambient air or oxygen enriched air oxidants. Embodiments can also provide a flue gas that has a high concentration of carbon dioxide that can facilitate improved carbon capture and permit efficient formation of at least one carbon dioxide product stream with a high carbon dioxide concentration (e.g. at least 95 mole percent carbon dioxide).

A system (11) is provided comprising a furnace (102), a heat exchanger (104), a gas separator (106) and a first thermochemical reactor (112). The heat exchanger (104) is arranged for receiving and cooling flue gas (121) comprising carbon dioxide and nitrogen from the furnace (102), thereby producing cooled flue gas (122). The gas separator (106) is arranged for receiving the cooled flue gas (122) and separating the cooled flue gas (122) into a nitrogen-rich gas (124) and a carbon dioxide-rich gas (125). The heat exchanger (104) is arranged for heating the nitrogen-rich gas (124) and the carbon dioxide-rich gas (125). The first thermochemical reactor (112) comprises a thermochemical compound. The first thermochemical reactor (112) is configured to receive heated carbon dioxide-rich gas (126) in a first mode of the system (11) and to generate carbon monoxide from carbon dioxide in the heated carbon dioxide-rich gas (126) by oxidation of the thermochemical compound to form a carbon monoxide-rich gas (125).

The present invention provides a system and method for pyrolysis, comprising: (i) a gas generator: oxidizing a carbonaceous feedstock in the presence of an oxidizing gas in a gasification zone to form generator gas; discharging the generator gas from the gasification zone through a generator gas outlet, wherein the residual oxygen content of the generator gas is substantially depleted or maintained below a maximum predetermined amount by controlling the ratio of oxygen to carbonaceous feedstock fed to the gasification zone; (ii) a pyrolyzer: feeding the discharged generator gas into a pyrolysis zone; pyrolyzing a pyrolytic organic feedstock in the pyrolysis zone in the presence of the generator gas to produce a carbonaceous pyrolysis product and a gas mixture; discharging the gas mixture from the pyrolysis zone through one or more pyrolyzer gas outlets; and (iii) a first burner: receiving the gas mixture discharged from the pyrolysis zone in a combustion zone; feeding an oxygen-containing gas into the combustion zone; and burning at least a portion of the combustible components present in the gas mixture in the combustion zone to produce a combustion product gas.