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88 results about "Ammonia emission" patented technology

Ammonia Emissions and Controls Emissions from ur ea production are ammonia and solid urea particles. [3] Fugitive emissions may occur from vents, seals, co mpressors, storage facilities, relief valves, and spills. [6] The following sections describe the techniques used by urea plants to control ammonia emissions.

Composite microecological preparation as well as preparation method and application thereof

The invention discloses a composite microecological preparation as well as a preparation method and application thereof. The compound microecological preparation disclosed by the invention comprises lactobacillus casei, lactobacillus plantarum and saccharomyces cerevisiae. The application effect of the composite microecological preparation in cow breeding is remarkable, the optimal addition amount of the composite microecological preparation is 100 mL / cow / day, the production performance of lactating cows can be improved, the milk yield is improved by 3.30 kg / cow / day, the milk yield of 4% standard milk is improved by 3.78 kg / cow / day, the total protein is improved by 15.9%, the albumin is improved by 14.7%, the globulin is improved by 16.5%, and the somatic cell number is reduced by 52.6%; and pollutant emission can be reduced, including 37.2% of ammonia emission reduction and 28.7% of carbon dioxide emission reduction.
Owner:JIANGSU ACAD OF AGRI SCI

Hydrogen ammonia emission generation prediction system and method based on in-cylinder combustion process and chemical reaction mechanism

The invention discloses an in-cylinder combustion process and chemical reaction mechanism-based hydrogen ammonia emission generation prediction system and method, and relates to the technical field of hydrogen internal combustion engine tail gas emission control, and the system comprises an input variable acquisition module, a combustion simulation module, a chemical reaction simulation module, an emission generation prediction module and an output interface module; according to the method, a mechanism-driven multi-physics field coupling prediction system is constructed, the simplified assumption limitation of a traditional empirical model is broken through, high-precision dynamic analysis of the emission characteristics of the hydrogen-ammonia engine is achieved, in combustion process simulation, in-cylinder turbulence mixing and flame propagation details are accurately described by using a CFD model, and in-cylinder combustion simulation is achieved. The chemical reaction module can significantly improve the prediction credibility of unburned fuel residues and pollutant generation through sensitivity analysis and mechanism optimization, in addition, through real-time coupling sensor data and simulation calculation, the abnormal emission trend can be pre-judged in advance, and a feedforward control basis is provided for the ammonia injection amount, the EGR rate and the ignition angle.
Owner:HEBEI HWAT AUTOMOBILE COMPONENTS +1

A method for ammonia emission reduction and stabilization control during the storage and fermentation of a mixture of manure and wastewater

This invention relates to the field of wastewater treatment technology and discloses a method for controlling ammonia emission reduction and stabilization during the storage and fermentation of a fecal-water mixture. This method addresses the problem in traditional methods of achieving coordinated control of ammonia volatilization inhibition and stabilization during the storage and fermentation process of a fecal-water mixture with continuously fluctuating composition and fermentation activity. The method first divides the incoming materials into batches and identifies their state to determine the volatilization risk state and fermentation acceptance state. During the storage stage, it performs graded control, continuous verification, and activity recovery treatment. After meeting the transition conditions, it implements fermentation transition control. During the fermentation stage, it sequentially performs stabilization advancement, stabilization control, and abnormal regression treatment, thereby achieving coordinated control of ammonia volatilization inhibition and stabilization during the storage and fermentation of the fecal-water mixture.
Owner:AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI

Treating agent for reducing ammonia escape concentration in cement kiln tail gas and preparation method thereof

The invention belongs to the technical field of additives, and discloses a treating agent for reducing ammonia escape concentration in cement kiln tail gas and a preparation method of the treating agent. The treatment agent comprises 10 to 16 parts of an adsorbent, 1 to 5 parts of a precipitating agent, 0.2 to 0.5 part of a metal buffering agent, 0.1 to 0.3 part of a surfactant and 20 to 32 parts of water. The treating agent disclosed by the invention solves the problem that the ammonia escape concentration in the cement kiln tail gas exceeds the standard due to excessive ammonia spraying in a denitration project, avoids the risk of secondary pollution caused by ammonia emission, and meets the national ultra-low emission limit requirement. Meanwhile, the treating agent is non-toxic and harmless, low in cost, simple in field operation and low in equipment investment, and assists and enables green development of cement enterprises.
Owner:YAOBAI SPECIAL CEMENT TECH R&D CO LTD

Continuous feeding type ammonia reducing-nitrogen preserving-maturing promoting composting reactor and method

The invention discloses a continuous feeding type ammonia reducing-nitrogen preserving-maturing promoting composting reactor and method, and belongs to the technical field of organic solid waste resourceful treatment and environmental engineering. The device adopts a mode of'four-zone sectional treatment + internal odor circulation + water vapor / ammonia gas management + adaptive aeration control 'to realize continuous feeding, zone synergistic fermentation and efficient nitrogen interception. The reactor integrates an ammonia gas and odor reduction unit in which electrodes assist microorganisms, a circulating pump drives gas to flow back, and a selective membrane is combined with activated carbon, and an aeration regulation and control system based on oxygen concentration feedback. And when a fermentation period is completed in about 20 days, ammonia emission and nitrogen loss are effectively reduced, decomposition is promoted, the quality of a compost product is improved, and the engineering value capable of being amplified and applied is achieved.
Owner:ZHEJIANG UNIV

Paracoccus pantotrophus and microbial agent and application thereof

The invention relates to the field of environmental microbial technology and agricultural waste recycling, in particular to paracoccus pantotrophus and a microbial agent and application thereof. The strain is Paracoccus pantotrophus XDF08, and is preserved in the China General Microbiological Culture Collection Center, called CGMCC for short, the preservation address is Institute of Microbiology, Chinese Academy of Sciences, No.3, No.1 Yard, Beichen West Road, Chaoyang District, Beijing, the preservation date is July 14, 2025, and the preservation number is CGMCC NO. 35225. The invention further discloses a preparation method of the paracoccus pantotrophus XDF08. The strain and the microbial inoculum thereof are applied to the composting process of agricultural wastes, can achieve the dual goals of reducing ammonia emission from the source and improving the quality of compost products, and have the advantages of low cost, simplicity and convenience in operation, greenness, environmental protection and the like.
Owner:INST OF AGRI ENG TECH FUJIAN ACAD OF AGRI SCI

Localized accounting method for ammonia emission and emission reduction of large-scale livestock and poultry farm

The invention discloses a localized accounting method for ammonia emission and emission reduction of a large-scale livestock and poultry farm. The method comprises the following steps: dividing the large-scale livestock and poultry farm into a colony house ammonia emission node, a liquid manure treatment link ammonia emission node and a solid manure treatment link ammonia emission node according to ammonia emission nodes; determining an ammonia emission coefficient of each ammonia emission node, a nitrogen loss ratio of ammonia at each node, a localized correction coefficient of each node and an ammonia emission reduction rate of implementing an ammonia emission reduction measure, determining an ammonia emission amount of each ammonia emission node according to the parameters, adding the ammonia emission amounts of the ammonia emission nodes, and determining the ammonia emission amount of each ammonia emission node according to the added ammonia emission amount. The ammonia emission of the large-scale livestock and poultry farm is obtained; calculating the difference between the standard year ammonia emission and the target year ammonia emission of the large-scale livestock and poultry farm to obtain the emission reduction, and finally obtaining the total emission reduction of the target year ammonia of the large-scale livestock and poultry farm in the target area. The method covers the ammonia emission link of the whole chain of the farm, avoids the missing of potential emission sources, and remarkably improves the accounting precision.
Owner:NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA

A low-nitrogen emission broiler large-scale cage feeding method

The present application relates to the technical field of agricultural breeding, and discloses a large-scale cage feeding method for low-nitrogen emission broiler chickens, which comprises a nutrition regulation module, a feeding environment management module, a harmless and resourceful treatment module for manure, and an intelligent monitoring module. The present application constructs a whole-chain low-nitrogen emission system from "feed source, feeding process, and end treatment". This systematic integration ensures that nitrogen is effectively controlled at each link, and minimizes ammonia emission and nitrogen pollution. The present application directly reduces about 15-20% of nitrogen intake and excretion by using low-protein daily feed and precise amino acid balance. In combination with the inhibition of urease by additives such as yucca extract, the purpose of controlling ammonia pollution from the source is achieved.
Owner:JIANGSU INST OF POULTRY SCI

Method for preparing organic soil using geopolymer, clay and manure biogas residue

PendingCN122439585AMicroorganismSoil science
The present application relates to a method for preparing organic soil by geopolymer KETOS and excrement biogas residue, and belongs to the technical field of agricultural soil repair and organic waste resource utilization. The method uses geopolymer KETOS with three-dimensional network inorganic framework and multi-stage interconnected pore structure as a porous mineral framework carrier, mixes it with livestock and poultry excrement and biogas residue, and carries out aerobic combined composting, so that organic matter and microorganisms are colonized in the pores of the geopolymer KETOS, forming functional organic soil with inorganic, organic and biological composite structure. The present application synchronously solves the two difficult problems of organic waste treatment and soil structure improvement, shortens the composting period by 30% to 50%, reduces ammonia emission by more than 60%, increases water retention rate by 60% to 120%, and the obtained product has multiple functions such as long-acting soil improvement, water and fertilizer retention, nutrient slow release, etc., can replace traditional materials such as vermiculite and perlite, and has wide application prospect.
Owner:BEIJING JUJU NEW MATERIALS CO LTD

METHOD FOR DISTINGUISHING BETWEEN NITROGEN OXIDE EMISSIONS AND AMMONIA EMISSIONS IN AN EXHAUST LINE OF AN INTERNAL COMBUSTION ENGINE

The invention relates to a method for distinguishing between nitrogen oxide emissions and ammonia emissions after treatment by a catalytic converter of an exhaust line of an internal combustion engine of a thermal motor vehicle comprising a step of controlling the voltage (E1) of the sensor for measuring the nitrogen oxide concentration; a step of controlling a voltage gradient (E2) and the oxygen voltage of the catalytic converter; an ammonia detection step (E3); a step of measuring the temperature (E4) of the catalytic converter by the temperature determination means; a step of controlling the oxygen concentration (E5) in the catalytic converter; a step of correcting the nitrogen oxide concentration (E6); a step of determining a correction factor (E7); a step of correcting the ammonia concentration (E8). Figure 1
Owner:STELLANTIS AUTO SAS

Catalyst for reducing ammonia emissions

The present invention relates to a composition comprising platinum supported on titanium oxide, the platinum particles having an average particle diameter of 50-200 nm. The composition has a surprisingly low light-off temperature for the ammonia oxidation and a high selectivity for oxidation to N2.
Owner:UMICORE AG & CO KG

Vehicle ammonia escape online detection method and system based on big data

The invention belongs to the technical field of vehicle detection, and discloses a vehicle ammonia escape online detection method, system and terminal based on big data. The method comprises the following steps: acquiring real-time data of ammonia emission concentration, identifying ammonia escape peak value concentration from the real-time data, and outputting a starting time point corresponding to the ammonia escape peak value concentration; based on the starting time point, an inspection period including a first inspection period and a second inspection period is set, the first inspection period is corrected to determine a first correction period, and a second correction period is determined based on the second inspection period. According to the method, discontinuous accidental ammonia escape caused by instantaneous fluctuation of the sensor or environmental interference is filtered out, so that an isolated and irregular data peak is prevented from being misjudged as a real ammonia escape event.
Owner:BENGBU COLLEGE

A method of rearing poultry with reduced ammonia emissions

The present application belongs to the technical field of poultry and livestock breeding, and relates to a poultry and livestock breeding method for reducing ammonia emission; the method comprises the following steps: laying a three-layer composite bedding material composed of a biological activation layer, an acid-base buffer layer and a basic adsorption layer before poultry and livestock enter a house, and continuously and stably reducing ammonia emission through the synergistic effect of physical adsorption, chemical neutralization and biological degradation; daily feeding of special ammonia-reducing feed containing composite plant extract, polysaccharide enzyme preparation and urease inhibitor to reduce the excretion of nitrogen-containing substances in feces from the source; spraying of a composite ammonia-removing agent according to the ammonia concentration gradient in the house to achieve precise control; mixing of feces and bedding material after poultry and livestock defecate, and supplement of ammonia adsorbent, so that the old bedding material can be composted into organic fertilizer. The present application constructs a whole-chain ammonia emission reduction system of'source control-process blocking-end conversion', effectively realizes long-term and stable control of the ammonia concentration in the poultry house, and improves the breeding environment.
Owner:天水市畜牧技术推广站

Ammonia vent gas treatment system and vent gas treatment method using the same

This document relates to a vent gas treatment system for ammonia-propelled vessels. The proposed vent gas treatment system includes a vent gas treatment facility configured to recover and treat ammonia discharged from an ammonia fuel consumer or an intermediate facility supplying ammonia fuel to the consumer; a wastewater tank for storing ammonia water discharged from the vent gas treatment facility; and gas piping for returning the ammonia gas generated in the tank back to the vent gas treatment facility. This system efficiently addresses not only the discharge of ammonia water but also the problem of ammonia gas in the tank storing the ammonia water.
Owner:エイチディー コリア シップビルディング アンド オフショア エンジニアリング カンパニー リミテッド +1

A device and method for measuring ammonia emissions from an ammonia-hydrogen fuel engine

This invention belongs to the field of exhaust gas monitoring technology and discloses a device and method for measuring ammonia emissions from an ammonia-hydrogen fuel cell engine. The device includes a high-efficiency filter and an engine. The high-efficiency filter is connected to an air heater. A first sampler is provided at the outlet of the air heater. The air heater and the engine are connected to a heating and mixing chamber. The heating and mixing chamber is connected to a dilution channel. The dilution channel is connected to a fan through a critical venturi tube. A sensor and a second sampler are provided in the dilution channel. The second sampler and the first sampler are connected to an analyzer. The analyzer and the sensor are connected to a computer. The method includes S1: connecting the measuring device; S2: preparation before measurement; S3: starting the measurement and acquiring parameters; S4: calculating the power-based emission factor of pollutants. This invention solves the problem of inaccurate measurement of ammonia emissions from engines in existing technologies and is applicable to exhaust gas measurement.
Owner:BEIJING INST OF TECH

Acidifying agent for reducing ammonia emission through storage and fermentation of pig manure water and application of acidifying agent

The invention relates to an acidifying agent for reducing ammonia emission through storage and fermentation of pig manure water and application of the acidifying agent. The acidifying agent is prepared from ardealite, ferrous sulfate and thermally activated natural starch according to the mass ratio of 3: 3: 4. The acidifying agent comprises the following elements in percentage by weight: 37.2% of C, 5.8% of H, 46.7% of O, 3.5% of Fe, 2.6% of P and 4.2% of S. According to the invention, the industrial waste phosphogypsum is subjected to resource utilization, so that resource waste is reduced; meanwhile, the acidifying agent takes inorganic acid as a crystal nucleus and a macromolecular organic carbon chain as a framework, a macromolecular organic-inorganic composite acidification system is built, after addition, the pH of a fermentation system can be rapidly reduced, the activity of microorganisms in the system is regulated and controlled, the synergistic effect of the acidifying agent and microbial acidification is achieved, the acidification efficiency is improved, and the acidifying effect is improved. The low pH can be effectively kept for a long time, and rapid and continuous storage, fermentation and acidification of the pig manure water are achieved.
Owner:AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI

Flexible ammonia sensor, preparation method and application thereof

PendingCN122385696AAnilineCalcination
This invention relates to a flexible ammonia sensor, its preparation method, and its application. The preparation method includes: S1: reacting Ti3C2T... x Calcination yields TiO2@Ti3C2T x S2: Apply TiO2@Ti3C2T x A first mixed solution is prepared by mixing aniline monomer with HCl; a second mixed solution is prepared by mixing aniline monomer with HCl; and a third mixed solution is prepared by mixing ammonium persulfate with HCl. S3: A polyimide film is immersed in the first mixed solution, and the third mixed solution is added to the second mixed solution to prepare a fourth mixed solution. S4: The fourth mixed solution is added to the first mixed solution to react and obtain a flexible ammonia sensor. The flexible ammonia sensor is prepared using the above method. The application is in real-time monitoring of ammonia emissions from high-humidity agricultural soils. The flexible ammonia sensor of this invention has high sensitivity at room temperature and excellent resistance to moisture interference and mechanical bending resistance.
Owner:QINGDAO UNIV

An ammonia treatment system

This application belongs to the field of ammonia treatment technology, specifically disclosing an ammonia treatment system, which includes a spraying mechanism and a circulating cooling mechanism. The spraying mechanism includes a spray tower, spray pipes, and an air inlet pipe. The water outlet of the spray pipe and the air outlet of the air inlet pipe are both connected to the interior of the spray tower, and the water outlet of the spray pipe is located above the air outlet of the air inlet pipe. The circulating cooling mechanism includes a guide pipe, a circulating water tank, a circulating water pipe, a delivery pump, and cooling components. The water inlet of the guide pipe is connected to the bottom end of the spray tower, and the water outlet is connected to the circulating water tank. The water inlet of the circulating water pipe is connected to the bottom end of the circulating water tank, and the water outlet is connected to the water inlet of the spray pipe. The delivery pump is installed on the circulating water pipe. Through the structural design of this application, the spray water can be continuously cooled, thereby ensuring the high efficiency of ammonia treatment, reducing ammonia emissions, reducing the risk of environmental pollution, and simultaneously realizing the recycling and reuse of spray water, reducing water waste.
Owner:HANGZHOU TRANSFAR FINE CHEM CO LTD +2

Arrangement and procedure for monitoring a plant for ammonia emissions

The invention relates to a monitoring arrangement and a monitoring method capable of monitoring a plant (LB, LB') for ammonia emissions. The monitoring arrangement comprises at least one monitoring unit (Üe.1, Üe.2) and a central computer (3). A predetermined upper limit for the ammonia emissions of the plant (LB, LB') is stored in a data memory (14, 14') of the monitoring unit (Üe.1, Üe.2). An ammonia sensor (1.01, 1.02, 1'.01, 1'.02) of the monitoring unit (Üe.1, Üe.2) measures the ammonia content in an emitted gas mixture. A communication unit (2, 2') of the monitoring unit (Üe.1, Üe.2) generates a message that includes the stored upper limit and the measured ammonia content(s). This message is transmitted to the central computer (3). An evaluation unit (8, 8.1) of the central computer (3) decides whether the actual ammonia emissions of the plant (LB, LB') are below the transmitted upper limit or not.
Owner:DRAGER SAFETY AG & CO KAAA

Storage treatment device and treatment method suitable for livestock and poultry liquid feces

The invention relates to the technical field of sewage treatment, and provides a livestock and poultry liquid manure storage treatment device and a treatment method.The device comprises an acidification pool used for adding an acidifying agent, the acidification pool is used for acidifying livestock and poultry liquid manure, and after the acidified livestock and poultry liquid manure is precipitated, first treatment liquid is obtained; a micro-aerobic aeration unit is arranged in the micro-aerobic aeration tank, and the micro-aerobic aeration tank is used for micro-aerobic aeration of the first treatment liquid. The covering device is used for covering the livestock and poultry liquid manure in the precipitation process and the first treatment liquid in the micro-aerobic aeration process. According to the storage treatment device and treatment method suitable for the livestock and poultry liquid feces, emission reduction of ammonia and greenhouse gas is achieved through the acidification technology, the storage treatment efficiency is improved through the micro-aerobic technology, and meanwhile initial ammonia emission increase caused by the storage process and micro-aerobic aeration can be reduced through the adsorption effect of straw of the covering device.
Owner:INST OF URBAN AGRI CHINESE ACADEMY OF AGRI SCI

Bacillus composti with high ammonia assimilation capacity and application thereof

The application discloses a high-efficiency ammonia-assimilating Bacillus compostus and application thereof, and relates to the technical field of microorganisms. Bacillus stercoris The strain is QY6, which has been preserved in the China General Microbiological Culture Collection Center (No. 3, Beichen West Road, Chaoyang District, Beijing) on December 23, 2024, with a preservation number of CGMCC No. 33139. The strain or a biological bacterial agent prepared from the strain can be used for composting of organic solid waste, so that ammonia emission can be significantly reduced; the composting product can be applied to soil, so that the contents of soil available nitrogen, organic matter and humic acid can be significantly increased; and the product can be used for cultivation of Chinese cabbage, so that the fresh weight can be significantly increased and the content of soluble sugar can be increased. The application provides a high-efficiency nitrogen-preserving and decay-promoting microbial strain, which can be used in the fields of agricultural waste resource utilization, composting quality improvement and efficiency enhancement and agricultural planting.
Owner:SOUTHWEST JIAOTONG UNIV

Desulfurization and denitrification device for treating diketene cracking tail gas

The utility model discloses a desulfurization and denitrification device for treating diketene cracking tail gas, and belongs to the technical field of desulfurization and denitrification. A desulfurization and denitrification device for diketene cracking tail gas treatment comprises a fixing table, a controller is arranged on the outer wall of the fixing table, a regeneration reaction tank and a liquid ammonia storage tank are arranged on the outer wall of the fixing table, a desulfurization assembly and a denitrification assembly comprise a desulfurization tank and a denitrification tank correspondingly, and the output end of a rotating motor extends into a mounting cylinder and then is connected with a transmission rod. According to the device, the desulfurization effect is more uniform and effective, the time required for desulfurization can be effectively shortened, the desulfurization effect is more sufficient, ammonia gas is released from the plurality of stirring rods, so that the ammonia gas can be ensured to be discharged more uniformly in the stirring process, the ammonia gas and tail gas can be mixed more conveniently, and the desulfurization effect is improved. The denitration reaction efficiency and effect of the tail gas are effectively improved.
Owner:ANHUI HECHENG BIOTECHNOLOGY CO LTD

An animal feed prepared using a microbial fermentation product and a method of preparing the same

This invention provides an animal feed prepared using microbial fermentation products and its preparation method. By constructing a symbiotic community of anaerobic ammonia-oxidizing bacteria and Clostridium butyricum, and combining it with livestock and poultry manure biochar as a fixation carrier and a complex enzyme system, the protein degradation and nitrogen emission control of ruminant feed are optimized. This method degrades crude protein into small peptides through anaerobic fermentation, while simultaneously converting ammonia nitrogen into nitrogen gas, effectively reducing ammonia emissions by 70%-80%. Furthermore, the use of high-temperature activated biochar as a fixation carrier improves the colonization rate and stability of the microbial community. This invention not only improves the nutrient utilization rate of feed but also solves the problems of high nitrogen emissions and low fiber utilization in traditional feeds, providing a novel solution for low-nitrogen, environmentally friendly ruminant feed.
Owner:NANYANG CHANGSHENG BIOTECHNOLOGY CO LTD

Bacillus mucilaginosus JZ-235 as well as preparation method, fungicide and application thereof

The invention discloses bacillus mucilaginosus JZ-235 as well as a preparation method, a microbial agent and application thereof, the preservation number of the bacillus mucilaginosus JZ-235 is CGMCC No.32962, the bacillus mucilaginosus JZ-235 has the advantages of high yield of urease and indoleacetic acid, efficient utilization of ammonium nitrogen and no denitrification effect, crop growth can be remarkably promoted, the yield is increased, CO3 < 2-> is generated while nitrogen (NH4 < + >) is provided for crops, and the bacillus mucilaginosus JZ-235 has the advantages of high yield of urease and indoleacetic acid and no denitrification effect. According to the present invention, with the application of the nitrogen fertilizer, the nitrogen fertilizer efficiency can be easily improved, the influence of the ammonia emission on the environment can be reduced, the nitrogen fertilizer efficiency can be easily improved through the growth and the propagation at the crop rhizosphere, the ratio of the non-denitrification functional bacteria in the soil can be increased, the soil denitrification effect can be reduced, and the nitrogen fertilizer efficiency can be improved; therefore, emission of nitrous oxide is reduced, and environmental protection is facilitated.
Owner:SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI

Ammonia emission measuring and calculating method and system for automobile equipped with TWC post-treatment in plateau environment

The invention discloses a method and a system for measuring and calculating ammonia emission of an automobile equipped with TWC post-treatment in a plateau environment. The method comprises the following steps: acquiring different excess air coefficient data, engine load data, automobile acceleration time data, automobile mileage data, altitude data, hydrogen content data in tail gas and corresponding NH3 emission data; calculating the weight of the excess air coefficient according to the excess air coefficient of the mixed gas and the influence function of the engine load and the automobile acceleration time on the excess air coefficient; fitting through a linear regression experiment to obtain an influence function of the driving mileage, the altitude and the hydrogen content in the tail gas of the automobile on NH3 emission; the NH3 instantaneous emission value of each experiment point is calculated and summed, and the basic emission value of NH3 is obtained; calculating an NH3 comprehensive emission value according to the excess air coefficient weight, the automobile driving mileage, the altitude, the influence function of the hydrogen content in the tail gas on NH3 emission and the basic emission value of NH3; and the accuracy and reliability of ammonia emission measurement and calculation of the automobile equipped with TWC post-treatment in the plateau environment can be obviously improved.
Owner:CATARC AUTOMOTIVE TEST CENT (KUNMING) CO LTD

Online virtual sensing method for hydrogen and ammonia emission of hydrogen internal combustion engine based on lightweight neural network

The invention provides a hydrogen internal combustion engine hydrogen ammonia emission online virtual sensing method based on a lightweight neural network, and relates to the technical field of vehicle-mounted intelligent sensing and emission control. Comprising four steps of construction of a standardized data set, construction of a lightweight neural network model, deployment and real-time optimization of the model, and output of a real-time emission estimation value. According to the invention, engine operation state data is collected and standardized, a high-quality data set is constructed, and then a lightweight neural network model with a simple structure and small parameter quantity is adopted to efficiently operate in an embedded environment and estimate the concentration of hydrogen and ammonia gas in real time, so that a traditional sensor is replaced to carry out accurate emission prediction. Meanwhile, an online learning mechanism is introduced for real-time optimization, it is ensured that high precision is maintained under different working conditions, the method has the advantages of being low in cost, capable of being embedded, high in precision and the like, the requirement for a traditional sensor is remarkably reduced, and the efficiency and reliability of a vehicle-mounted emission control system are improved.
Owner:HEBEI HWAT AUTOMOBILE COMPONENTS +1

Method for efficiently treating metal ions in acid wastewater prepared by activated carbon method based on sintering process characteristics

The application discloses a method for efficiently treating metal ions in acid-making wastewater by activated carbon method based on sintering process characteristics, and steps include synthesis of adsorbent, drying of the adsorbent, removal of heavy metals in acid-making wastewater by the adsorbent, and disposal of waste adsorbent. The synthesis process of the adsorbent is simple, easy to operate, fast in reaction speed, and the waste liquid can be recycled without three waste emissions. The waste heat of the sintering circular cooling machine can be fully utilized through reasonable design to realize efficient utilization of waste heat. The mixed alkali low-alkali precipitation metal-solid adsorption-cyclone separation technology is developed, which can simultaneously realize deep removal of metal ions and inhibition of unorganized ammonia emission. The waste silica adsorbent containing metal ions can be returned to the sintering for high-temperature treatment, thereby recycling silicon resources and simultaneously disposing metal ions.
Owner:BAOSTEEL ZHANJIANG IRON & STEEL CO LTD

Systems and methods for treating wastewater and uses thereof

A method and system to significantly reduce odor emissions caused by ammonia and other noxious gasses and reduce nitrogen levels in animal husbandry wastewater effectively and efficiently by the use of flush water that has been biochemically conditioned to lower the pH thus reducing the level of un-ionized compounds including NH3 which can volatilize into the atmosphere and which method and system can also be used to remove ammonia and nitrogen from the wastewater system. The present disclosure includes the use of flush water that has been biochemically conditioned to lower its pH thus sequestering non-ionized ammonia from being released from a liquid as ammonia gas. This disclosure relates to the new use of nitrification for biochemical conditioning of wastewater for use as flush water to reduce atmospheric ammonia emissions.
Owner:PANCOPIA INC

Ammonia flare zero emission system and treatment process

The application provides an ammonia flare zero emission system and a treatment process, which comprises an ammonia gas conveying main pipe, the ammonia gas conveying main pipe is communicated with each ammonia gas emission device, and further comprises an ammonia gas absorption tower, a liquid inlet of the ammonia gas absorption tower is communicated with a water inlet pipe, a gas inlet is communicated with the ammonia gas conveying main pipe, a spraying assembly for spraying rising ammonia gas is arranged in the top of the ammonia gas absorption tower; a circulating pump inlet is communicated with the bottom of the ammonia gas absorption tower through a pipeline, an outlet pipeline is communicated with the middle part of the ammonia gas absorption tower, the pipeline connected with the circulating pump outlet is further communicated with an ammonia evaporation device, and a valve is arranged on an output main pipe; a propylene cooler is arranged on the pipeline connected with the circulating pump outlet, and the treatment process of the ammonia flare zero emission system is further provided. The ammonia gas emitted by the ammonia flare is treated by using the low-temperature deep absorption, continuous concentration and recovery and upgrading coupling technology, the ammonia gas in the ammonia flare gas is absorbed and concentrated before being combusted by the flare, the concentrated ammonia gas is sent back to the ammonia evaporation device for treatment, and high-quality ammonia water is obtained.
Owner:PUCHENG CLEAN ENERGY CHEM CO LTD

Marine ammonia treatment system and marine vessel

The utility model provides a kind of ship ammonia treatment system, including ammonia emission system, ammonia gas discharge pipeline, liquid ammonia discharge pipeline, liquid ammonia heater, ammonia cracking device and air permeation device, one end of ammonia gas discharge pipeline and one end of liquid ammonia discharge pipeline are connected with ammonia emission system, the other end of ammonia gas discharge pipeline and the other end of liquid ammonia discharge pipeline are connected with the inlet of ammonia cracking device, liquid ammonia heater is set on liquid ammonia discharge pipeline, the outlet of ammonia cracking device is connected with air permeation device.The utility model also provides a kind of ship.
Owner:SUNRUI MARINE ENVIRONMENT ENG +1