249results about "Emission prevention" patented technology

The application discloses an integrated desulfurization and decarbonization particle separation external circulation spouting fluidized bed and a running method thereof, and belongs to the technical field of flue gas desulfurization and decarbonization. The fluidized bed is provided with a gas inlet at the bottom, a micro cyclone separator is arranged in the fluidized bed, a spouting bed gas inlet is communicated with a fluidized bed exhaust port, a micro cyclone separator exhaust port is communicated with the fluidized bed exhaust port, and the bottom of the micro cyclone separator is communicated with the outside. A calcium oxide feeding port is arranged at the lower end of the spouting bed, the top of the spouting bed is communicated with a cyclone separator gas inlet, a cyclone separator exhaust port is communicated with a calcining furnace inlet, and the calcining furnace is provided with a carbon dioxide discharge pipe. The intermittent fluidized bed is provided with a calcium hydroxide slurry inlet at the top, the calcium oxide feeding port is provided with a sealing cover, the calcining furnace outlet is communicated with a calcium oxide powder discharge pipe or a material guide pipe inlet, and the material guide pipe outlet is communicated with the lower end of the spouting bed. The continuous fluidized bed is provided with a liquid inlet at the top, the calcium oxide feeding port is an opening, the calcining furnace outlet is communicated with the material guide pipe inlet, and the material guide pipe outlet is communicated with the fluidized bed.

The invention relates to the technical field of waste gas treatment, in particular to a waste incineration flue gas dry denitration system which comprises a reaction cylinder, a center block, a guide assembly and a flow dividing assembly, the reaction cylinder is vertically arranged, the center block is arranged in the reaction cylinder, a plurality of flue gas cavities are formed between the reaction cylinder and the center block, and flue gas is introduced from the bottoms of the flue gas cavities; the multiple smoke cavities are arranged in the circumferential direction of the reaction cylinder, a chemical cavity is formed between every two adjacent smoke cavities, and a denitration agent is introduced from the bottoms of the chemical cavities; the guide assembly is arranged on the central block and is used for guiding a denitration agent in the chemical cavity and flue gas in the flue gas cavity to rotate and mix at different angles in the circumferential direction of the reaction cylinder, so that the flue gas and the denitration agent rotate and intersect in the rising process, and the flue gas and the denitration agent are more easily and fully mixed to react; and the shunting assembly is arranged in the reaction cylinder and is used for separating the flue gas and the denitration agent in the vertical direction, so that the subsequent reduction reaction is prevented from being influenced by sudden local temperature drop caused by instantaneous generation of a large amount of chemical reactions.

Methods, apparatus, systems, and articles of manufacture are disclosed to measure fallout from a liquid flare burner. An example apparatus includes a device configurator to invoke a first control valve to isolate the liquid flare burner from a test fluid source, and invoke a second control valve to fluidly couple the liquid flare burner to a hydrocarbon source to generate unburned fallout droplets to be captured by first and second measurement surfaces in first and second measurement regions, a parameter calculator to calculate first and second fallout volumes associated with the unburned fallout droplets captured by the first and second measurement surfaces, and determine a fallout efficiency of the liquid flare burner based on the first and second fallout volumes, and a burner configurator to, in response to the fallout efficiency not satisfying a fallout efficiency threshold, adjust a configuration of the liquid flare burner based on the fallout efficiency.

A combustion method using a fuel combustion device, a cement manufacturing method, and a cement calcination facility including a fuel combustion device, in which while the amount of a fossil fuel used as a fuel supplied to a fuel combustion device provided in various facilities such as a cement calcination facility is reduced, the radiation heat transfer amounts of various burners are maintained, whereby the amount of heat transferred to a heating target such as a powder raw material of cement clinker is maintained to maintain a state suitable for calcination, the amount of carbon dioxide emitted from the various facilities is reduced, and the various facilities can be operated at a low cost, and a fuel combustion device including a fuel supply mechanism having a mechanism that supplies a flammable powder, a mechanism that supplies a fuel gas, and a mechanism that supplies a non-flammable powder are used.

A method for separating carbon dioxide from a flue gas stream in which an atmospheric open flue gas stack having a flue gas inlet and a flue gas outlet is connected via a first conduit and a second conduit between a first flue gas generating unit and a second unit configured to capture carbon dioxide. A boost device disposed within the first conduit is configured to draw flue gas from the first unit and maintain the pressure in the first unit constant. A flow measurement for determining an actual flue gas flow within the first conduit is effected within the first conduit upstream of the flue gas stack, and the pressure in the first unit is controlled using a control unit, where the actual flue gas flow within the first conduit is used as an input signal to the control unit.

This disclosure provides an ammonia injection method and apparatus based on a denitrification system. The method includes: acquiring current boiler parameters of a coal-fired boiler; collecting nitrogen oxide (NOx) parameters at the denitrification inlet of the denitrification system as a first NOx parameter; collecting NOx parameters at the denitrification outlet of the denitrification system as a second NOx parameter; collecting NOx parameters at the total exhaust outlet of the denitrification system as a third NOx parameter; preprocessing the current boiler parameters, the first NOx parameter, the second NOx parameter, and the third NOx parameter respectively; determining the current required ammonia quantity for the denitrification system based on at least one of the preprocessed current boiler parameters, the first NOx parameter, the second NOx parameter, and the third NOx parameter; and injecting ammonia into the denitrification system according to the current required ammonia quantity. This method ensures that the calculated ammonia injection quantity is significantly more accurate.

A system and method are provided for obtaining nitrogen and carbon dioxide gas from flue gas. A method according to some embodiments involves receiving flue gas at the inlet of a selective catalytic reduction system, wherein the flue gas is one or more NO x The system includes a gas and one or more NOs in a selective catalytic reduction system. x The method includes reducing a gas to N2 gas, receiving output gas from a selective catalytic reduction system at the inlet of a gas separation membrane, and separating the output gas into a retained substance and a permeate using the gas separation membrane, wherein the retained substance comprises N2 gas.

An apparatus and process for oxidant formation can be configured to facilitate improved mixing of for formation of an oxidant. Embodiments can be configured so conduits having a relatively large aspect ratio (e.g., 1.5 to 5 or 1.5 to over 5) can be utilized for improved gas mixing even in situations in which the carrier gas is at a relatively low pressure. Embodiments can also facilitate low nitrogen oxide formation combustion. Some embodiments can additionally provide improved carbon capture.

A method for melting vitrifiable materials to produce flat glass, including: providing a furnace including: a melting tank, a fining tank, a neck, at least one inlet means located at the melting tank, an outlet means located downstream of the fining tank, and at least one extraction means of a flue gas located at the at least one upstream zone; charging the vitrifiable materials including raw materials and cullet in the melting tank with the at least one inlet means; cullet pre-heating; melting the vitrifiable materials in the melting tank; fining the melt in the fining tank; flowing the melt from the fining tank to a working zone through the outlet means; and capturing CO2 from the flue gas.

A gas conditioning system removes contaminants including nitrogen oxides and sulfur oxides from flue gas of a marine vessel, and includes an oxidizer unit and a direct contact cooler. The oxidizer unit receives an exhaust flue gas from a marine engine through a fluid inlet at a temperature between 150 degrees Celsius and 550 degrees Celsius, and converts at least a portion of the nitrogen oxides in the flue gas into nitrogen gas, nitrogen dioxide, or both. The direct contact cooler is fluidly connected to the oxidizer unit, and includes a housing defining a cooling chamber. The direct contact cooler directs the flue gas into contact with seawater residing in the cooling chamber and cools the flue gas to a temperature less than or equal to 60 degrees Celsius. The seawater removes some or all nitrogen dioxide and sulfur dioxide from the flue gas in the cooling chamber.

This application provides a denitrification control method and system for biomass boilers based on cryogenic catalytic reduction, relating to the field of combustion product treatment technology. The method includes: arranging a denitrification reactor in the tail flue of the biomass boiler and monitoring the associated data of the outlet flue gas in real time; performing multi-level control analysis on the boiler denitrification control space and establishing a multi-level denitrification control channel; monitoring the reaction temperature and dynamically identifying zones in the denitrification reactor to determine the cryogenic catalyst reaction zone set; using the multi-level denitrification control channel to perform dynamic strategy analysis on the associated data of the outlet flue gas and the cryogenic catalyst reaction zone set; monitoring the denitrification execution of the denitrification reactor based on the target boiler denitrification control parameters, and performing dynamic compensation control through flue gas denitrification feedback data. This application can solve the technical problem of unstable denitrification control efficiency in existing biomass boiler technologies, achieving the technical effect of improving the stability of denitrification control efficiency.

A system for capturing carbon subsequent to an industrial process can include a group of modules configured to be prefabricated remotely from an industrial site, transported to the industrial site, and interconnected together at the industrial site. Each module can include equipment configured to perform one or more subprocesses of a capturing carbon process. Examples of the one or more subprocesses can include a pre-scrubber subprocess, an absorbent reclaiming subprocess, an absorbent regeneration subprocess, a dehydration subprocess, a deoxygenation subprocess, or any combination thereof.

The invention belongs to the technical field of electrical digital data processing, and particularly relates to a circulating fluidized bed boiler nitrogen oxide control optimization operation method and system.The circulating fluidized bed boiler nitrogen oxide control optimization operation method comprises the steps that based on a particle swarm algorithm, particles are obtained to form a particle swarm; calculating the fitness of each particle according to the target function; obtaining a historical optimal cost vector and a population minimum cost vector; calculating a position vector and a velocity vector of the particles after iteration; according to the position vectors of the particles after iteration, obtaining operation parameters and costs of the corresponding circulating fluidized bed boiler and the denitration device, and setting the operation parameters; according to the method, the optimal operation parameters of the circulating fluidized bed boiler and the denitration device are automatically searched through the particle swarm optimization, meanwhile, the effect of boiler combustion and tail denitration coupling is fully considered in calculation, the coal consumption of the circulating fluidized bed boiler and the consumption of the denitration agent can be reduced under the requirements of given load and nitrogen oxide emission concentration, and the system reliability is improved. And the operation cost is lowest.

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).

The invention discloses a molten salt heat storage and carbon capture synergistic coupling system and a control method, and belongs to the technical field of energy conservation and consumption reduction of coal-fired units. The system comprises a fused salt heat storage unit, a heat exchange module, a smoke exhaust pipeline, an amine liquid circulation carbon capture module and a control unit, the control unit is connected with the fused salt heat storage unit, the heat exchange module and the amine liquid circulation carbon capture module; the heat exchange module is integrated with a group of shell-and-tube heat exchangers, the shell side of each shell-and-tube heat exchanger is connected with the fused salt heat storage unit, and the tube side of each shell-and-tube heat exchanger is connected with the amine liquid circulation carbon capture module; the fused salt heat storage unit comprises a low-temperature fused salt tank, a first fused salt circulating pump, a waste heat boiler, a second fused salt circulating pump and a fused salt heat storage tank; a three-way valve is arranged at a fused salt inlet of the heat exchange module and used for controlling the flow direction of fused salt; a smoke inlet of the waste heat boiler is connected with a smoke exhaust pipeline, a fused salt inlet of the waste heat boiler is connected with an outlet of the low-temperature fused salt tank through a first fused salt circulating pump, and a fused salt outlet of the waste heat boiler is connected with an inlet of the fused salt heat storage tank and a three-way valve. An outlet of the fused salt heat storage tank is connected with a three-way valve through a second fused salt circulating pump; a fused salt outlet of the heat exchange module is connected with an inlet of the low-temperature fused salt tank. According to the fused salt heat storage and carbon capture collaborative coupling system and the control method, the framework is simplified, control is convenient and fast, and the feasibility is high.

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.

A cryogenic carbon capture system includes a flue gas cooling device in fluid communication with a heat engine. The flue gas cooling device receives a fluid stream that is downstream from the heat engine and a cooled liquid coolant stream so that the fluid stream is cooled by the cooled liquid coolant stream and a cooled flue gas stream is formed. A cryogenic carbon capture unit receives at least a portion of the cooled flue gas stream and separates carbon dioxide from the first portion of the cooled flue gas stream so that a clean flue gas stream and a carbon dioxide stream are formed. A liquid coolant cooling device receives the clean flue gas stream and a liquid coolant stream and cools the liquid coolant stream using the clean flue gas stream so that the cooled liquid coolant stream is formed and provided to the flue gas cooling device. The heat engine is in fluid communication with the cryogenic carbon capture system and receives a portion of a split stream that is downstream from the flue gas cooling device as an exhaust gas recirculation stream and an air stream.

The invention discloses a boiler system capable of discharging low-concentration CO and NOX. The system comprises a hearth, a first-stage economizer, a catalyst reactor, a second-stage economizer, an air preheater, a dust remover and an induced draft fan. The hearth, the first-stage economizer, the second-stage economizer, the air preheater, the dust remover and the induced draft fan are connected in sequence; the number of the catalyst reactors is at least one, and the catalyst reactors are arranged in at least one of the following positions: a position between the primary economizer and the secondary economizer, a position between the secondary economizer and the air preheater, a position between the air preheater and the dust remover, a position between the dust remover and the induced draft fan and an outlet pipeline of the induced draft fan; the catalyst reactor is filled with a multifunctional catalyst, NOX in the boiler flue gas can be reduced into N2, and CO in the boiler flue gas can be oxidized into CO2 at the same time. According to the device and the method, NOX and CO in the boiler flue gas can be efficiently and synergistically removed in a limited space, and the device and the method have relatively high environment-friendly value and economic value.

Systems and methods for separation of a component from a mixed gas stream by a combination of direct contact heat and material exchange in an indirect contact heat exchanger are disclosed. A contact liquid stream wets an interior surface of the process channel of the indirect contact heat exchanger and the mixed gas stream passes through the process channel, contacting the contact liquid stream for heat and mass exchange. A refrigerant in the refrigerant channel of the indirect contact heat exchanger is used for heat exchange with the contact liquid.

The application relates to the technical field of industrial miscellaneous salt treatment, in particular to a device and method for treating industrial miscellaneous salt. In order to solve the problem that the existing industrial miscellaneous salt treatment method is not environmentally friendly, a new device and method for treating industrial miscellaneous salt are provided, which comprise a medium-frequency furnace, the top of the medium-frequency furnace is provided with a flue gas outlet, the top end of the medium-frequency furnace is provided with a feeding opening, the feeding opening is sealingly provided with a feeding machine, the bottom end of the medium-frequency furnace is provided with a discharging opening, and the flue gas outlet of the medium-frequency furnace is connected with a tail gas treatment system. The device and method are a brand-new device and method for treating industrial miscellaneous salt, that is, the industrial miscellaneous salt is mixed with auxiliary materials and is melted into a glass phase melt, which is used as a raw material in the glass industry.

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

The present disclosure includes an industrial filtration system and components for the system. The components include a smaller flue than conventional filtration systems. The system also includes one or more heaters configured to convert a dosing solution into vapor to interact with gas emissions generated by an industrial plant or power plant. Embodiments may also include one or more filters, some of which may be surrounded by one or more magnets to create a magnetic field within the flue to affect the gas emissions. Various sensors (e.g., gas, temperature, and pressure) may be used to send data to a controller that can change inputs to the system. Inputs may include heat and pressure, or may provide alerts that various components may have failed, need replacement, or require maintenance.

The application provides a control method of a tail gas SCR denitration system of an SCV gasifier and electronic equipment. The SCR denitration system is coupled with the SCV gasifier and is used for processing tail gas of the SCV gasifier. The control method comprises the following steps: collecting a characteristic parameter related to a load of the SCV gasifier; screening out abnormal data in the characteristic parameter through an adaptive algorithm, and taking the characteristic parameter after the abnormal data is screened out as host load data of the SCV gasifier; and performing linkage control on operation parameters of the SCR denitration system according to the host load data of the SCV gasifier. The application can make the SCR denitration system actively match the load variation of the adaptive SCV gasifier.

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 invention relates to the technical field of industrial gas purification and carbon capture, in particular to a system and a method for cooperatively capturing CO2 and H2O in flue gas. The flue gas CO2 and H2O synergistic trapping system comprises: a flue gas pretreatment module, which is used for pretreating to-be-treated flue gas; the membrane separation module is connected to the downstream side of the flue gas pretreatment module; the membrane separation module comprises a ceramic membrane separation unit, and a plurality of tubular ceramic membranes with high selective separation performance on CO2 and H2O are arranged in the ceramic membrane separation unit; the compression and purification module is connected to a permeation gas flow outlet of each tubular ceramic membrane of each ceramic membrane separation unit of the membrane separation module and is used for treating permeation gas of the membrane separation module; and the energy recovery module is used for carrying out energy recovery on the trapped gas flowing out of the membrane separation module. According to the invention, the system flow is simplified, the equipment investment is reduced, and more importantly, a high-purity CO2 product is produced.

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.

The invention relates to a waste incineration power plant SNCR-SCR coupling denitration system, and relates to the technical field of waste incineration flue gas treatment.The waste incineration power plant SNCR-SCR coupling denitration system comprises a waste storage bin, combustion equipment and dust removal equipment, and the combustion equipment is connected to the bottom of the side, away from a waste feeding port, of the waste storage bin; one side of the combustion equipment is connected with a semi-dry neutralization reaction tower through a pipeline, one side of the combustion equipment is connected with SNCR denitration equipment, and an SCR denitration reactor is connected between the dust removal equipment and the chimney; according to the SNCR-SCR coupled denitration system, waste incineration treatment is conducted through the system, heat generated by waste incineration is fully utilized, waste gas generated after waste incineration is subjected to harmless treatment and then discharged, the denitration efficiency is improved through the SNCR-SCR coupled denitration system, the risk of secondary pollution is reduced, the consumption of urea is reduced through graded utilization of a reducing agent, and the denitration efficiency is improved. And through the uniform spraying mechanism, ammonia gas or a urea solution for reaction can fully react with the gas, so that the denitration rate of the waste gas is improved.

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).

Calcination kiln plant with a carbon capture unit (6) (CC) comprising a calcination kiln (1) having a flue gas (FG) exit, a carbon capture pathway (7) with said carbon capture unit (6) and a FG compressor (12) for feeding said FG to said CC, said CC being connected to said FG compressor, and having a treated FG exit through which a treated FG (13) exit, and a CO2 exit through with a CO2-rich stream (14) is collected and one or more mass transfer loops (16,17), feeding a gaseous stream to said FG compressor (12) of the carbon capture pathway (7).