60 results about "Nitrogen emission" patented technology

The invention relates to a chicken feed, in particular to a layer feed. A high-efficiency environment-friendly layer feed contains 15 to 15.5 percent of protein, and comprises the following components: an animal protein source, a plant protein source, a fat source, methionine, lysine, mineral substances, a vitamin additive, bacillus, EM bacteria and a mulberry leaf extract. By adding the methionine and the lysine, the protein content of the feed is reduced to 15-15.5 percent, and the nitrogen emission in manure of layers can be effectively reduced; meanwhile, the added bacillus and the EM bacteria can decompose and utilize substances such as indole, proteins, ammonia in the manure, the nitrogen emission in the mature and the discharge of harmful gas such as ammonia gas (NH3) and indole are reduced, and the nutritional value of eggs cannot be influenced.

A combustion burner assembly having low oxides of nitrogen emission includes a mixing section having an air inlet, a fuel inlet and a fuel mixture outlet. Air is tangentially supplied to the mixing section through the air inlet. A pocket portion in the mixing section receives fuel from a fuel inlet. A plurality of holes in the pocket portion transfer fuel to the mixing section to form a fuel mixture with the air in the mixing section. A diffuser is disposed within the mixing section adjacent the fuel mixture outlet. The diffuser has a plurality of overlapping vanes disposed around an aperture that form a plurality of passages between each of the plurality of overlapping vanes through which the fuel mixture exits the mixing section. A pilot assembly is substantially disposed within the mixing section and passes through the aperture in the diffuser. The pilot assembly is adapted to produce a pilot light downstream of the diffuser that ignites the exiting fuel mixture to produce a high swirling flame, thereby resulting in a combustion burner assembly having low oxides of nitrogen emission.

The invention discloses a method for concentration of biogas and standard emission of clear liquid. The method comprises the steps of sediment processing, nitration processing, membrane contraction processing, nutrient mixing processing, disinfection processing and the like, wherein through the nitration processing, ammpnium nitrogen in the biogas is converted into nitrate nitrogen, thus the nitrogen emission in effluent is reduced, the nitrogen is maintained in concentrated liquid, the effective nutrient in the concentrated liquid is improved by above 2 times, the recycle rate of the clear water reaches about 80%, and simultaneously, the standard emission of permeation liquid can be achieved or recycled after disinfection. The invention also discloses a device for implementing the method. By using the method and device provided by the invention, the reduction high value utilization of the biogas and the standard emission of the permeation liquid are achieved, thereby reducing the pollution of environment.

The invention relates to a feed which can improve the broiler production performance and a production method thereof; the feed comprises the following components based on weight proportion: 500-550 portions of corn, 120-160 portions of middling flour, 220-260 portions of basic material, 30-35 portions of bone meal, 8-12 portions of lard, 2-3 portions of lysine hydrochloride, 0.5-1 portion of DL-methionine, 0.5-1 portion of threonine, 2-6 portions of calcium carbonate, and 8-12 portions of 1% broiler premix. The invention uses rich non-conventional protein raw material to rationally prepare diets and greatly meets the nutrient type and quality needs of the broilers in the late stage; the invention also makes use of various non-conventional protein materials and amino acids to balance the dietary amino acid and meet the need on amino acid of the broilers to a maximum extent, so as to highly efficiently use the protein sources and economically utilize the feed protein; besides, the invention obviously makes use of the protein resources for throttling and helps to reduce the environmental pollution caused by nitrogen emissions in the breeding process, thereby improving the breeding environment.

The invention provides a method for predicting agricultural non-point source pollution county-scale surface runoff total nitrogen emissions. The method comprises the steps of 1) obtaining county-level administrative division ranges in different zones through the agricultural non-point source pollution occurring zoning, and as for county-level biological chemical detection of a zone, obtaining N-year county-level surface runoff total nitrogen emissions; 2) selecting N-x-year nitrogen emission data affecting the surface runoff total nitrogen emissions, and establishing an N-year surface runoff total nitrogen county-level prediction model; 3) applying the surface runoff total nitrogen county-level prediction model, and through N-year data affecting the surface runoff total nitrogen emissions, obtaining the N+x-year surface runoff total nitrogen emissions. Aimed at the difficult problem that the county-scale agricultural non-point source pollution surface runoff total nitrogen cannot be predicted and based on the agricultural non-point source pollution occurring zoning, the invention establishes the surface runoff total nitrogen emission prediction model, predicts the agricultural surface runoff total nitrogen emissions, and provides technical support for agricultural non-point source pollution prevention and control.

The invention aims at providing a control method for a hydrocarbon fuel ignition type zero-nitrogen emission engine with pure oxygen as oxidant. The technical scheme of combination of pure oxygen airinflow and exhaust gas recirculation and the strategy that the pure oxygen air inflow volume and the exhaust gas recirculation air inflow volume are collaborative along with work conditions are adopted, stable and controllable combustion in an engine cylinder is guaranteed, the power requirement is met, and meanwhile the purposes of zero NOx emission of the hydrocarbon fuel ignition type engine and reduction of emission of HC, CO and PM can be achieved.

The invention discloses a rice field non-point source pollution emission reducing and rice yield increasing method, and belongs to the field of biochar agriculture application. According to the scheme, the method comprises the three steps that 1, biochar is applied to the soil surface to form a biochar covering layer; shallow ploughing is conducted on the biochar covering layer; soil is irrigated duly to form a soil-biochar buffer layer. According to the method, the absorption capacity of the biochar to rice filed surface nitrogen is improved, and a green and environment-friendly rice field surface water nitrogen emission reducing method is formed; by changing the biochar application mode, the absorption capacity of the biochar to rice field surface nitrogen can be improved on the conditions that no extra substance input is increased, and external energy is not applied, and then the non-point source pollution risk caused by rice field surface water is reduced.

The invention discloses a feed applicable to industrial aquaculture of tilapia, and a preparation method and a feeding method of the feed. The feed is prepared from corn protein powder, chicken powder, bean pulp, fermented rapeseed meal, fermented cottonseed meal, flour, soybean oil, fish oil, rice bran, mineral substances, vitamins and the like according to certain weight percent. The materials are prepared into granules by the steps of mixing, crushing, pelletizing, drying, screening and the like, and the granules are fed to the industrially cultivated tilapia according to the corresponding feeding method. The feed disclosed by the invention is made from the common materials, is low in cost, and is made by the simple and reliable preparation method; the raw materials are reasonable in proportion, and thus the feed can better meet the physiological needs of the industrially cultivated tilapia; the excrement of the tilapia is good in molding and unlikely to scatter, thus being discharged out of a culture system more easily. By virtue of the feeding method disclosed by the invention, ammonia and nitrogen emission can be reduced, the content of ammonia nitrogen and nitrite in a water body can be effectively reduced, and the resistance of the tilapia to streptococcus is enhanced.

The invention belongs to the field of biomass utilization and discloses a method for controlling nitrogen emission in a process of preparing liquid oil from algae. The method comprises the following steps: S1: grinding and drying algae biomass and lignocellulose biomass; S2: putting the lignocellulose biomass in the step S1 into a fixed bed reactor and carrying out a pyrolytic reaction to obtain abiomass carbon additive; S3: mixing the algae biomass and the lignocellulose biomass in the step S1, and pyrolyzing the mixture to obtain a pyrolytic carbon solid and pyrolytic volatile components; S3: enabling a part of the nitrogen-containing substances in the pyrolytic volatile components to fully react with the biomass carbon additive obtained in the step S2, so as to fix a part of the nitrogen in the biomass carbon additive and achieve an aim of reducing nitrogen emission. According to the method provided by the invention, the nitrogen emission is effectively reduced, and the nitrogen can be converted into a nitrogen-doped carbon material with a high added value, thereby facilitating green utilization of the algae biomass.

The invention discloses a meat duck compound feed with a nitrogen emission reduction function and a preparation method of the meat duck compound feed. The meat duck compound feed comprises the following components in percent by weight: 50-65 percent of corn, 4-15 percent of barley, 4-24 percent of bean pulp, 0-10 percent of rapeseed dregs, 3-10 percent of vinegar residue, 0.1-0.25 percent of methionine, 0.1-0.25 percent of lysine, 0.05-0.15 percent of choline, 1-2 percent of calcium hydrophosphate, 0.6-1 percent of mountain flour, 0.1-0.6 percent of vitamin premix and 0.1-0.6 percent of microelement premix. According to the meat duck compound feed disclosed by the invention, through regulating components and contents of meat duck compound feed, the nitrogen emission in a meat duck raising process is reduced when the growth performance of a meat duck is not influenced, thus the feed cost of the meat duck can be reduced, the pollution of meat duck raising to the environment can be greatly reduced, and a good economic benefit and a social benefit are achieved.

This embodiment of this exhaust apparatus relates to an air intake device and a rotating blade assembly (50 and 51) which significantly reduce greenhouse gases, hydrocarbon and oxides of nitrogen emissions and other gases and pollutants not yet required to be tested, exhaust noise and temperature of the exhaust gases. By its chilling effect it also improves the efficiency of an internal combustion engine. An electric motor drive shaft (69) is coupled to the drive shaft (67) at the rear of the unit. The drive shaft (66) is attached to the centrifuge and rotating blade assembly (51) creating a vacuum which draws chilled exhaust gases into the unit. The vacuum helps to cool the engine and chill the gases. The gases are mixed and the resultant gaseous mixture exits from the blades into a mixture of exhaust gases (43) and chilled air (35), making a chilled air and exhaust gas mixture (58) exiting through a discharge port in the rear of the unit (65). The test results demonstrated significant reductions in greenhouse gases and exhaust gas emissions and significantly reduced engine exhaust temperature.

This embodiment of this exhaust apparatus relates to an air intake device and a rotating blade assembly (50 and 51) which significantly reduce greenhouse gases, hydrocarbon and oxides of nitrogen emissions and other gases and pollutants not yet required to be tested, exhaust noise and temperature of the exhaust gases. By its chilling effect it also improves the efficiency of an internal combustion engine. An electric motor drive shaft (69) is coupled to the drive shaft (67) at the rear of the unit. The drive shaft (66) is attached to the centrifuge and rotating blade assembly (51) creating a vacuum which draws chilled exhaust gases into the unit. The vacuum helps to cool the engine and chill the gases. The gases are mixed and the resultant gaseous mixture exits from the blades into a mixture of exhaust gases (43) and chilled air (35), making a chilled air and exhaust gas mixture (58) exiting through a discharge port in the rear of the unit (65). The test results demonstrated significant reductions in greenhouse gases and exhaust gas emissions and significantly reduced engine exhaust temperature.

The invention discloses an environmentally-friendly phosphorus-free degreasing agent. The degreasing agent is prepared from the following raw materials in parts by weight: 3-5 parts of sodium carbonate, 2.25-3.75 parts of sodium silicate, 0.75-1.25 parts of sodium sulfate, 1.1-1.8 parts of sodium hydroxide, 0.5-0.83 part of polyvinylpyrrolidone, 0.5-0.8 part of a compound nonionic surfactant, 0.5-0.8 part of a self-defoaming emulsifier and 2.4-3.6 parts of an organic metal chelating agent. The degreasing agent has the advantages that the phosphorus and nitrogen emission problems are avoided, the cost is low, the grease wettability is good, the hard water softening capabilityis achieved, the degreasing agent is combined with metal ions in oil stains so as to generate a chelate capable of being dissolved in water, the surface tension is low, the interfacial activity of a cleaning agent solution is greatly improved, and the cleaning effect is greatly improved.

The invention discloses a swirling crude oil burner, utilizing burning crude oil, of a steam-injection boiler. Such a crude oil swirling low-nitrogen burner comprises, in an air flow direction, an air inlet, a control damper, a central air chamber, a secondary air chamber, a peripheral air chamber, a secondary air nozzle and a peripheral air nozzle in order. Central air orderly flows through the central air chamber, a central air duct and a flame stabilizer. Secondary air orderly flows through the secondary air chamber, a secondary air swirling plate, a secondary air duct and the secondary air nozzle. Peripheral air orderly flows through the peripheral air chamber, a peripheral air duct and the peripheral air nozzle. An oil gun, a flame detector and the flame stabilizer all are arranged in the central air duct. The burner provided by the present invention organizes air for combustion via reasonable staging to realize staged combustion of the crude oil, and therefore, the generation of nitrogen oxides may be effectively reduced and nitrogen emissions may be reduced; in addition, the burner has the advantages of simple system, easy maintenance, low maintenance cost and long service life.

The invention designs a hydrocarbon fuel ignition type zero nitrogen rotor machine with oxygen as an oxidant and a control method of the hydrocarbon fuel ignition type zero nitrogen rotor machine. A fuel flow meter (3), an oxygen flow adjuster (9) located in an oxygen conveying pipeline and a gas flow adjuster (15) are adjusted by using the rotating speed of an engine as a signal and combining signals of an oxygen concentration sensor (7) and a CO concentration sensor (14), the peroxygen concentration coefficient of the rotor engine is maintained in an appropriate range, the combustion efficiency of the engine is improved, nitrogen in intake air is removed in a pure oxygen intake method, emission performance of the rotor machine is improved, and zero nitrogen emission of the rotor machineis achieved. Since the device adopts the clean oxidant, the defect that nitrogen in intake air generates nitrogen oxides (NOx) in the high temperature environment in a cylinder of a traditional engineis overcome, and therefore zero emission of the engine is achieved.

The invention discloses a gas emission determinator and a method for determining the trace nitrogen emission flux using the same. The gas emission determinator comprises an inner layer seal tank capable of being sealed, and an outer layer seal tank capable of being sealed, wherein the inner layer seal tank is arranged in the outer layer seal tank in a sleeving manner, and meanwhile is filled with an undisturbed soil column, and an inert gas buffer layer is arranged between the inner layer seal tank and the undisturbed soil column. The method for determining the trace nitrogen emission flux using the gas emission determinator comprises the following implementation steps: A, preparing undisturbed oil; B, replacing gas in a clearance between the inner layer seal tank and the undisturbed soil column; C, replacing gas between the inner layer seal tank and the outer layer seal tank; D, culturing; and E, determining the content of nitrogen in the inner layer seal tank, and calculating the undisturbed soil column nitrogen emission flux. The gas emission determinator and the method for determining the trace nitrogen emission flux using the same have the beneficial effects that the inert gas buffer layer positioned between the inner layer seal tank and the outer layer seal tank can be used for obviously reducing and even eliminating the nitrogen leakage, so that the trace nitrogen flux with high background concentration can be determined accurately.

The invention discloses a pelteobagrus fulvidraco feeding pattern with different protein contents under various temperature and dissolved oxygen, and relates to a pelteobagrus fulvidraco feeding pattern in aquaculture. The feeding pattern is to monitor the water temperature and dissolved oxygen in the pond every day, when the mean water temperature TA and the mean dissolved oxygen DOA meet 23 DEGC<=TA<= 30 DEG C, and DOA >= 4mg/L, high protein content feed is fed, and low protein content feed is fed for the rest conditions; the protein content of the high protein content feed is 42% and the protein content of low protein content feed is 38%, both of them are palatable puffing feed. The pelteobagrus fulvidraco feeding pattern with different protein contents under various temperature and dissolved oxygen has extensive experimental basis and scientific basis to meet the nutritional requirements of the growth of pelteobagrus fulvidraco, and can reduce the cost of aquaculture effectively and reduce the waste of feed, and improve the economic benefit of aquaculture and effectively reduce the nitrogen emission in aquaculture water; the operation method is simple and clear, and has the prospect of demonstration and easy promotion.

The invention discloses a pig feed additive with low emissions of carbon and nitrogen. The pig feed additive comprises the following components in parts by weight: 0.5-2 parts of fumaric acid, 0.5-2 parts of hydrotalcite, 1-5 parts of cello-oligosaccharide, 1-10 parts of a montmorillonite zinc oxide compound; or the pig feed additive comprises the following components in parts by weight: 0.5-2 parts of fumaric acid, 0.5-2 parts of hydrotalcite, 1-5 parts of cello-oligosaccharide, 1-10 parts of a zeolite zinc oxide compound. Through the pig feed additive with low emissions of carbon and nitrogen, the function of the fumaric acid of reducing methane yield, the function of the cello-oligosaccharide of adjusting intestinal microecology, the function of the montmorillonite/zeolite zinc oxide compound of protecting intestinal mucosa, inhibiting urease and absorbing nitrogen and the effect of the hydrotalcite of slowly releasing a carrier are combined organically to generate a synergistic combination effect, so that the nitrogen emission in the pigsty can be reduced by 30-70%, the ammonia emission in the pigsty can be reduced by 30-50% and the methane emission can be reduced by 20-30%.

The invention discloses an ecological, environment-friendly, nutritional and high-efficiency carassius auratus pengzesis feed and a preparation method of the feed. Compared with an existing formula technology, raw materials of the feed are proportioned reasonably according to the nutritional requirement of carassius auratus pengzesis and the raw material digestibility of the carassius auratus pengzesis, and the feed formula cost is reduced; the amino acid composition of the feed is balanced according to the composition of amino acids in muscles of the carassius auratus pengzesis, so that the carassius auratus pengzesis has the high utilization rate on the feed protein and the pollution of nitrogen emission in metabolic wastes to farming water is reduced; according to the feed, the ratio of animal protein and fish meal is reduced, the vegetable protein ratio is increased, the feed formula cost and the phosphorous emission are reduced remarkably, and the water eutrophication caused by unbalanced nitrogen and phosphorus ratio is avoided; chelated microelements are adopted for replacing inorganic microelements, and the absorption rate is increased remarkably; the added taurine can be used for improving the immunity; stable VC and vitamin E are added to improve the stress resistance; colleseed oil is appropriately added, the content of the total protein is reduced, the fat conservation effect on the protein is achieved, and the water pollution is reduced; and no any antibiotics are added, and therefore, the feed is green and environmentally-friendly.

The invention relates to an ammonia-containing waste gas ultralow nitrogen emission treatment method and system. The system comprises an ammonia-containing waste gas conveying pipeline, an oxygen-containing gas conveying pipeline, a combustible gas conveying pipeline, a premixing chamber, a complex maze channel reactor, a tail gas conveying pipeline and a chimney; the combustible gas conveying pipeline is connected with a burner arranged on the complex maze channel reactor; the ammonia-containing waste gas conveying pipeline and the oxygen-containing gas conveying pipeline are connected with an inlet of the premixing chamber separately, an outlet of the premixing chamber is connected with a mixed gas inlet of the complex maze channel reactor, and a tail gas outlet of the complex maze channel reactor is connected with the chimney through the tail gas conveying pipeline. The ammonia-containing waste gas ultralow nitrogen emission treatment method and system have the advantages that the complex maze channel reactor is utilized to achieve a local concentration surface reaction of low-concentration ammonia gas and a coupling interactive oxidation reaction of various organic substances,multi-stage reduction and transformation of nitrogen oxides are also achieved, and finally, ultralow nitrogen pollutant emission of ammonia-containing organic waste gas is achieved.

The invention discloses fuel gas/fuel oil synergist for an industrial boiler and a kiln stove and a preparation method and application of the fuel gas/fuel oil synergist and belongs to the field of application of fuel gas/fuel oil to industrial kiln stoves and boilers. The synergist comprises a mixture containing transition metallocene and catocene, methyl tertiary butyl ether, cyclohexane peroxide, absolute ethyl alcohol, isopropanol, ethylene glycol monobutyl ether and petroleum ether. The synergist is good in anti-detonating performance; no corrosion is caused to metal pipes, containers, rubber, plastic and the like; the production process is safe and stable; under the combustion condition that pure oxygen does not need to be added or no enriched oxygen is involved, the fuel gas/fuel oil can be combusted fully in deficient oxygen/air, and the effects of energy conservation and consumption reduction are achieved; the initiation temperature is effectively lowered; the energy conservation rate can be remarkably increased; and the effect of reducing pollutant emission can be achieved. The synergist has the beneficial effects that safety is good, consumption is low, and the gas saving rate is high; the fuel gas can be saved by 22% at the maximum or above; and emission of harmful exhaust gas is reduced, and in particular, nitrogen emission can be remarkably reduced.

The invention discloses an environment-friendly elver puffed floating granular compound feed and a preparation method of same. The feed includes, by weight, 15-30% of special grade brown fishmeal, 25-35% of special grade white fishmeal, 18-20% of flour, 5-10% of peeled soybean meal, 2-6% of brewer's yeast, 6-10% of soybean oil, 2-5% of fish oil, 1.5% of soya bean lecithin and 5% of a compound feedadditive premix. The fertilizer is prepared through a vacuum spray coating technology. The feed reduces protein level and increases fat level, so that nitrogen emission is reduced and production costis greatly reduced.

The invention discloses feed for fresh grass carp in different breeding seasons and a feeding method of the feed. According to the feed for the fresh grass carp in the different breeding seasons and the feeding method of the feed, the feed with different nutrient components is correspondingly used in a grass carp breeding recovery stage, a grass carp breeding disease stage, a grass carp breeding high-temperature stage, a grass carp breeding growing stage and a grass carp breeding wintering stage, and the problems of low protein deposition rate and multiple diseases are solved; through adjustment of nutrition standards in different seasons, the energy-nitrogen ratio and amino acid in the different seasons are constantly balanced, and the protein deposition rate is effectively improved; meanwhile, nitrogen emission is lowered, the diseases are reduced, and the problem of high formula cost is solved; and by lowering protein during certain breeding seasons, the formula cost is greatly lowered.