How to Nitrogen oxides?

System and method for NOx reduction optimization,Separation system,Thermal power plant ultrasonic atomization desulfurization-dust removal-ammonia escape prevention integrated system,Rare-earth-doped nitrogen oxide green fluorescent powder and preparation method thereof,Automobile exhaust system diagnosis and repair method

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Nitrogen Oxide. Definition - What does Nitrogen Oxide mean? Nitrogen oxide is a common term for mono-nitrogen oxides viz. nitric oxide (NO) and nitrogen dioxide (NO 2). Its chemical formula is (NOx). It is formed when nitrogen (N 2) comes in contact or reacts with oxygen (O 2).

System and method for NOx reduction optimization

ActiveUS20070163244A1Reduced fuel efficiencyReduce nitrogen oxide contentAnalogue computers for vehiclesElectrical controlExhaust gas recirculationDiesel engine

An engine controller determines the cost of operating a combustion engine and the cost of operating an emissions after-treatment device. Accordingly, the engine controller adjusts parameters for operation of the engine and the after-treatment device to ensure cost-effective use of the engine and the after-treatment device while complying with exhaust emissions requirements. In particular, the engine controller receives the price of fuel consumed by the engine and the price of reductant used by the after-treatment device to determine the respective cost of operation. Specifically, the fuel is diesel fuel used in a diesel engine; the reductant is urea use in a urea-based Selective Catalytic Reduction (SCR) system; and the regulated exhaust emissions is nitrogen oxide (NOx) emissions. The engine operating parameters may include cooled exhaust gas recirculation airflow, fuel injection timing, fuel injection pressure, and air-to-fuel ratio. The SCR system operating parameters may include the volume of urea injected.

System and method for NOx reduction optimization

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Owner:CUMMINS INC

Separation system

ActiveUS20200388869A1Low costReduce thicknessReactant parameters controlHydrogen productionNitrogen oxidesNitrogen dioxide

(EN) The present invention relates to the field of high efficiency and high flow hydrogen generation and purification from a hydrogen tank provided in the form of ammonia (NH3). In particular, the present invention describes in particular an innovative and compact system for the dissociation of ammonia and therefore the production of molecular hydrogen (H2), all in a cycle totally free of carbon (hence carbon emissions), as well as by the generation of nitrogen oxide and nitric dioxide (NOx).

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Owner:GALBIATI CRISTIANO

Thermal power plant ultrasonic atomization desulfurization-dust removal-ammonia escape prevention integrated system

InactiveCN107433115ALow concentration of sulfur dioxideReduce dust contentCombination devicesGas treatmentAutomatic controlEngineering

The invention discloses a thermal power plant ultrasonic atomization desulfurization-dust removal-ammonia escape prevention integrated system. The system comprises a flue gas diversion system, an ultrasonic atomization system, a demisting system, a water treatment system, a dosing system and an automatic control system. Flue gas flows through an ultrasonic flue through diversion, in the ultrasonic flue, a circulating desulfurization compound lye is pressurized through a high pressure pump and is atomized by an ultrasonic device to form uniform fog groups composed of micron-sized fine fog drops, the ultrasonic flue is fully filled with the fog groups, the fog groups block passing flue gas, SO2 in the flue gas is captured by an atomization desulfurization agent and fast undergoes a reaction, an ultrasonic generator releases ultrasonic wave and shakes the desulfurization compound lye to obtain atomized gas having sizes of less than 5-10 microns, the atomized gas of the desulfurization compound lye has large surface tension and a certain viscidity and can effectively capture dust in flue gas, an ultrasonic generator can effectively capture ammonia escaping in the denitrification process and the escaped ammonia in the ultrasonic vibration atomization environment and nitrogen oxides further undergo a reduction reaction.

Thermal power plant ultrasonic atomization desulfurization-dust removal-ammonia escape prevention integrated system

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Owner:陈佐会

Rare-earth-doped nitrogen oxide green fluorescent powder and preparation method thereof

InactiveCN104610967AImprove luminosityWide effective excitation rangeLuminescent compositionsNitrogen oxidesRare earth ions

The invention relates to rare-earth-doped nitrogen oxide green fluorescent powder and a preparation method thereof. The nitrogen oxide green fluorescent powder has the chemical formula of Ba1-yLnxAl2-x-zSizO4-zNz: yEu<2+> (Ln is Y, La, Gd, Lu). The preparation method comprises the following steps: according to the stoichiometric ratio of the chemical formula, weighting raw materials, namely elementary substances, oxide or the corresponding salts of Si, Al, Ba and Ln (Ln is Eu, Y, La, Gd, Lu) and adding a fluxing agent; fully grinding, placing the powder into a sintering furnace and carrying out primary high-temperature roasting and secondary reduction sintering and then post treatment to obtain the final product, nitrogen oxide green fluorescent powder. By virtue of doping rare earth ions and adding the fluxing agent, the preparation conditions and light-emitting effect are improved, the nitrogen oxide green fluorescent powder is simple to prepare, free of pollution and low in cost, has strong excitation peaks from an ultraviolet region to a blue region, can emit bright green light under the excitation action of ultraviolet and blue lights and has potential application values on lighting and display aspects.

Rare-earth-doped nitrogen oxide green fluorescent powder and preparation method thereof

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Owner:JIANGXI UNIV OF SCI & TECH

Automobile exhaust system diagnosis and repair method

InactiveCN106870081AInternal combustion piston enginesExhaust treatment electric controlExhaust gasNitrogen oxides

The invention discloses an automobile exhaust system diagnosis and repair method. The automobile exhaust system diagnosis method comprises the following steps that (1) communication connection is built; (2) data flow is obtained; (3) a test result is generated; (4) a diagnosis report is generated; and (5) the proper repair method is selected according the diagnosis report. According to the automobile exhaust system repair method, problem element repair and replacement and tail gas purifier regeneration treatment are conducted on a whole engine system according to the diagnosis result of a special test system; and purification efficiency of a tail gas purifier is recovered and improved while a good working condition of the engine system is ensured, and harm of harmful emissions such as carbon monoxide (CO), hydrocarbon (HC), nitrogen oxide (NO<x>), PM and sulfide to the human health and the environment is fundamentally eliminated.

Owner:宿迁薪融智能科技有限公司

Gasoline environmental-protection and energy-saving additive and environmental-protection and energy-saving gasoline

InactiveCN106590775AReduce consumptionImprove synchronous combustionLiquid carbonaceous fuelsEngineeringPetroleum

The present invention relates to a gasoline environmental-protection and energy-saving additive and an environmental-protection and energy-saving gasoline, and belongs to the energy source cleaning technology. The gasoline environmental-protection and energy-saving additive is characterized by comprising by weight: 0.003-0.005 part of biological enzyme, 0.001-0.003 part of a coenzyme preparation, 0.2-0.4 part of a plant extract, and 35-45 parts of a petroleum distillate adopted as a carrier. According to the present invention, with the gasoline environmental-protection and energy-saving additive, the gasoline viscosity can be reduced so as to make the gasoline become the oxygen-rich fuel, the burnout characteristic and the low oxygen combustion performance of the gasoline can be improved, and the emissions of the nitrogen oxides, the sulfur oxides and the hydrocarbons after the gasoline combustion can be reduced.

Gasoline environmental-protection and energy-saving additive and environmental-protection and energy-saving gasoline

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Owner:国科蓝天清洁能源技术有限公司

Emission technology of vapor containing nitrogen oxide and tar

ActiveCN108854458AImprove the efficiency of absorbing harmful components in exhaust gasPrevent control failure problems caused by errorsGas treatmentDispersed particle separationAtmospheric airExhaust gas emissions

The invention discloses an emission technology of vapor containing nitrogen oxide and tar. The emission technology comprises the following steps: opening a cutoff valve, a circulating water pump and an exhaust fan, wherein the circulating water pump starts a water circulation process; opening a discharging valve and releasing calcium hydroxide into water in a stepped overflow pool, and opening thedischarging valve when the pH value of the water in the stepped overflow pool is smaller than or equal to 8.0; closing the discharging valve when the pH value of the water in the stepped overflow pool is greater than or equal to 8.7; when an adjustment target is to prevent haze and the temperature of exhaust gas is greater than or equal to 90 DEG C, stopping the temperature-regulating operation;opening the temperature-regulating operation again when the temperature of the exhaust gas is smaller than 80 DEG C; stopping the temperature-regulating operation again when the adjustment target is to prevent thermal pollution and the difference value between the temperature of the exhaust gas and the atmospheric temperature is smaller than 3 DEG C; opening the temperature-regulating operation when the difference value between the temperature of the exhaust gas and the atmospheric temperature is greater than 6 DEG C. The emission technology disclosed by the invention can efficiently remove sulfur dioxide and nitrogen oxide from water, the weak alkalinity of water is maintained on the premise of ensuring safety and the emission temperature of the exhaust gas is correspondingly controlled according to different adjustment targets.

Owner:HENAN SONGYUE CARBON

Method for recovering carbon dioxide from tail gas of industrial kiln and producing lithium carbonate

ActiveCN114835142AHigh gas purityHigh recovery rateProductsCarbon compoundsParticulatesLithium hydroxide

The invention relates to a method for recovering carbon dioxide from tail gas of an industrial furnace and producing lithium carbonate, which comprises the following steps of: removing particulate matters from the tail gas of the industrial furnace, performing denitration and desulfurization treatment, pressurizing the treated tail gas to 0.1-0.7 MPa, dehydrating, and removing NOx and SO2 by adopting a double-tower temperature swing adsorption device to obtain purified tail gas, introducing into a four-tower pressure swing adsorption device to separate carbon dioxide, and finally introducing the obtained carbon dioxide into a lithium hydroxide solution to prepare lithium carbonate. According to the invention, trace sulfides and nitrogen oxides in the tail gas are removed by using a temperature swing adsorption method, so that the total concentration of SO2 and NOx in the tail gas is 1t; according to the method, a pressure swing adsorption method is adopted to recover carbon dioxide, the obtained carbon dioxide gas is high in purity, high in recovery rate and large in treatment capacity, the separated and refined high-purity carbon dioxide can be used as a raw material in the carbonization process to produce battery-grade lithium carbonate, and resource utilization of the carbon dioxide in the tail gas of the industrial furnace is achieved.

Method for recovering carbon dioxide from tail gas of industrial kiln and producing lithium carbonate

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Owner:JIANGSU RONGHUI GENERAL LITHIUM IND CO LTD +1

8 results about "Nitrogen oxides" patented technology

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