419results about "Air quality improvement" patented technology

The invention discloses a microbiological deodorization method, which belongs to the technical field of disinfection and deodorization, and comprises the following steps: S1, preparing a microbial preparation, S2, pre-stirring a strain combination; S3, preparing a deodorant from the prepared composite microbial preparation according to the mass; and S4, putting a prepared deodorant into an ultrasonic atomizer or a spray tower. According to the invention, the microbial preparation is creatively adopted to perform spray deodorization on the odor source, so that the deodorization efficiency is high, the effect is good, the treatment cost of the odor source and odor is effectively reduced, the overall operation difficulty is low, only the polluted area is atomized, the odor is effectively controlled before volatilization, the odor pollution spreading can be effectively controlled, and the influence on the operation environment is avoided; the microbial inoculum is non-toxic, can be naturally degraded, has no residue after deodorization, does not need additional neutralization and filtration, has higher environmental adaptability, and meets the deodorization requirements of small and medium-sized farms and small and medium-sized garbage collection stations.

This invention relates to the field of flue gas treatment technology. It discloses an integrated flue gas desulfurization, denitrification, and decarbonization method based on a hypergravity reactor. S1: Flue gas is pressurized by a booster fan and then enters a concentration and cooling tower for heat exchange and cooling. S31: If the flue gas detection device fails to meet the requirements, the flue gas enters the secondary thin-plate hypergravity treatment device connected in series via a series return gas branch for secondary treatment. S32: If the flue gas detection device meets the requirements, the flue gas enters the main flue gas emission path via the series return gas branch and the flue gas emission branch. The main flue gas emission path transmits the flue gas to the hypergravity decarbonization reactor. The secondary thin-plate hypergravity treatment device is ultra-thin and divided into multiple vertically distributed sections, ensuring that the grading is performed in the same or nearly identical space, reducing the height of the secondary thin-plate hypergravity treatment device and minimizing energy consumption during initial operation.

The utility model relates to sewage treatment technical field proposes a kind of biological deodorization device for sewage treatment station, filtering mechanism, filtering mechanism includes first mounting bracket, and electric push rod is installed on first mounting bracket, and the output end of electric push rod is connected with installation frame, and filter screen is installed on installation frame;Cleaning mechanism, cleaning mechanism includes second mounting bracket, and multiple brushes are connected on second mounting bracket, and the bottom end of second box body is installed with first motor, and the output end of first motor is connected with second mounting bracket;Fan is installed to the top end of second box body, and the input end of fan is communicated with second box body, and the output end of fan is communicated with first box body, the device is rotated by second motor drive installation ring, to adjust the position of first biological filter bed and second biological filter bed, reduce replacement step, improve use convenience, by first motor drive multiple brushes rotation, to carry out cleaning to particulate matter on filter screen, improve filtration effect.

The application relates to the technical field of high polymer materials, in particular to ammonia-removing and humidity-controlling water gel as well as a preparation method and application thereof, which comprises the following raw materials: deionized water, AM, MBA, Gly, lithium chloride, 2-hydroxy-2-methyl propiophenone, magnesium chloride or magnesium oxide; the AM and the MBA are added into the deionized water, and polymerization is initiated by 2-hydroxy-2-methyl propiophenone and ultraviolet light to form a polyacrylamide network, so that the novel water gel can stably control humidity and effectively remove ammonia in long-term storage, effectively adsorb ammonia and provide molecular-level water molecules, and the required humidity of a cigar is maintained; secondly, the MBA is added into the water gel to form a more stable and porous three-dimensional crosslinking network, which can not only adjust the moisture absorption / relaxation rate of the water gel, realize humidity buffering, but also adsorb ammonia molecules through acid-base neutralization, ion exchange, hydrogen bonding, electrostatic interaction, so that the water gel can maintain the required humidity of the cigar for a long time and reduce the volatilization of ammonia.

The application discloses a composite metal catalyst for catalytic degradation of VOCs at low temperature and a preparation method thereof, and belongs to the field of environmental protection catalysis technology. The composite metal catalyst comprises the following components in percentage by weight: 5-25% of a multi-component composite metal oxide, 65-90% of modified mesoporous zeolite, 2-6% of a composite additive, and 1-3% of a high-temperature-resistant binder. The multi-component composite metal oxide is a copper / manganese / cerium / zirconium quaternary composite oxide, and the molar ratio of copper, manganese, cerium and zirconium is 1:(0.8-1.2):(0.5-0.8):(0.2-0.5). The modified mesoporous zeolite is ZSM-5 mesoporous zeolite which is modified by rare earth ions and an amphoteric surfactant. The application adopts the copper / manganese / cerium / zirconium quaternary composite metal oxide as an active component, the introduction of cerium and zirconium forms a solid solution structure, greatly improves the oxygen storage capacity and the redox performance of the active component, and the synergistic effect of copper and manganese and cerium and zirconium significantly reduces the oxidation and decomposition temperature of VOCs.

This invention discloses a passive adsorption-selective catalytic reduction (CCR) device for diesel vehicles, comprising an electronically controlled nozzle, a first mixing chamber, a pre-catalytic oxidation-reduction chamber, a second mixing chamber, and a post-catalytic oxidation-reduction chamber arranged sequentially. The first mixing chamber includes a first urea solution inlet, a V-shaped breaker wall, and a W-shaped bottom mixing chamber. The V-shaped breaker wall is fixed to the rear wall of the first urea solution inlet pipe. The W-shaped bottom mixing chamber includes an inner cavity and an outer cavity. The inner cavity wall has staggered array openings, and the inner and outer cavities are connected through these openings. A guide wall structure is connected to the outermost pipe at the end of the first mixing chamber. The CCR chamber is connected to the end of the guide wall, and a three-zone integrated catalyst is located inside the CCR chamber. This invention solves the problems of severe NOx escape during the cold start phase, system complexity, and low-temperature urea crystallization in existing selective catalytic reduction technologies.

The application discloses a pseudomonas strain TR14 and application thereof in degrading nicotine, and the pseudomonas strain TR14 is obtained by being separated from soil in which tobacco is planted perennially, has good degrading capacity on nicotine, and has a degrading rate of 98.44% on 7g / L nicotine after being cultured for 24 hours, and the highest tolerance reaches 8g / L nicotine. The strain can effectively degrade nicotine content in upper tobacco leaves.

The utility model discloses a kind of deodorization equipment for lifting pump station, including cylinder and controller, the outer surface side of the cylinder is fixedly connected with shell, and controller is fixedly installed in the inboard of shell, top plate is fixedly connected between the shell and cylinder, the top of the top plate and cylinder is sealed with mounting plate, rotating assembly is jointly installed between the mounting plate and shell. In the utility model, the upper shell and the lower shell structure of split type screw connection are used, the clamping design of cooperation support ring and pressure ring makes that activated carbon plate forms the sealed assembly of quick disassembly, the difficult problem of replacement caused by traditional fixed installation is solved;By pump suction type gas detection sensor, the odor concentration of gas after real-time monitoring processing is monitored, when detecting abnormal, rotating assembly drives mounting plate to rotate, cylinder exhaust hole is closed, avoid untreated malodorous gas direct emission.

The utility model belongs to infrared radiation health care technical field, concretely relates to a kind of infrared radiation light wave bathroom.It includes bathroom, is provided with automatic sterilization purification module on the bathroom, and the automatic sterilization purification module includes ozone sterilization system and ozone degradation discharge system;First infrared radiation plate is respectively installed on the left side wall board, right side wall board, rear side wall board and door body inner side of the bathroom, the inner bottom of the bathroom is installed with two second infrared radiation plate and third infrared radiation plate being separately arranged, infrared physiotherapy stool is placed on the second infrared radiation plate, and footrest is placed on the third infrared radiation plate.In the utility model, the linkage design of ozone sterilization system and degradation discharge module constructs complete disinfection closed loop;Three-dimensional radiation network formed by first infrared radiation plate, second infrared radiation plate and third infrared radiation plate can also realize differentiated heat therapy.

This invention belongs to the field of waste gas treatment technology, specifically relating to an absorbent for treating organic waste gas and its preparation method. The absorbent for treating organic waste gas comprises the following raw materials in parts by weight: 10-25 parts graphene oxide, 20-30 parts catalyst, 25-40 parts functionalized ionic liquid, and 10-20 parts N-isopropylacrylamide. In the catalyst prepared by this invention, the synergistic effect of the cerium source, cobalt source, and sodium selenate forms a stable heterojunction structure through hydrothermal and thermal treatment processes, optimizing the number and distribution of catalytic active sites and enhancing catalytic oxidation capacity. After oxidation and modification, the graphene oxide enhances its dispersion stability, firmly anchoring the catalyst particles to the graphene surface and accelerating electron transfer in the catalytic reaction. This results in the prepared absorbent for treating organic waste gas possessing high adsorption capacity, efficient catalytic degradation ability, and cycle stability.

The application discloses a kind of deep neural network gas identification method and system based on internet of things electronic nose, gas sample response signal obtained by gas sensor array collection is sent to cloud data center by terminal equipment with sensor array and internet of things module.In the pre-processing of data to microcontroller MCU, gram angle field transformation is carried out, so that the two-dimensional sensor response data received by host computer becomes three-dimensional data that can be input into convolutional neural network after dimensionality increasing, and the gas label is output through classifier, which can represent gas category and concentration grade, realizes the real-time, anti-interference and high detection accuracy of remote monitoring.Gives play to the advantages of strong feature extraction ability, fast model convergence and high recognition accuracy of convolutional neural network.It can be widely applied in environmental detection, industrial production, medical treatment and safety fields.

The utility model relates to underground safety protection technical field, concretely is a kind of carbon monoxide two-stage reaction elimination device for coal mine underground drilling blasting, it include: mine water gel explosive, carbon monoxide reagent, primary container, secondary container, sealing cover and connecting pipe, the one end of primary container is enclosed and built-in sleeve in one end, mine water gel explosive is placed in sleeve, carbon monoxide reagent is placed outside sleeve. Lead from secondary container from the lead wire port of mine water gel explosive lead, carbon monoxide reagent is placed into secondary container, and mine water gel explosive lead is led from the lead wire port of sealing cover. Connecting pipe is passed through secondary container, and inner-embedded nut is tightened. After sealing process is completed, detonate explosive, after primary container, secondary container are simultaneously blown apart, carbon monoxide reagent in two containers is actively reacted with carbon monoxide.

Selective catalytic reduction system (100), comprising: a dispenser mounting system with: a mounting plate (120) with an opening (123) in a surface (127) of the mounting plate (120), a plurality of mounting brackets (121) coupled to the mounting plate (120), wherein the plurality of mounting brackets (121) are positioned around a peripheral part of the opening (123), at least a part of each of the plurality of mounting brackets (121) is spaced away from the mounting plate (120), and each of the plurality of mounting brackets (121) includes an opening (128) in the part that is spaced away from the mounting plate (120), and a plurality of fasteners (122), each having a fastening head (136) and a fastening shaft (137) positioned in the openings (128) of the plurality of fastening brackets (121), such that each fastening head (136) is arranged between the surface (127) of the mounting plate (120) and the part of the respective fastening bracket (121) that is spaced from the mounting plate (120), and each fastening shaft (137) extends from a respective opening (128) in a direction with an orthogonal component with respect to the surface (127) of the mounting plate (120); and a dispenser (110) coupled to the dispenser mounting system via the plurality of fixings (122), wherein the fixing shafts (137) extend through openings in legs (111) of the dispenser (110), wherein an injector opening of the dispenser is aligned with the opening (123) in the mounting plate (120).

The present invention provides a vehicle body structure that can prevent water, mud, and other substances from entering the atmospheric vent pipe. [Solution] The vehicle body structure 1 includes a tank 5 for storing an additive for purifying the vehicle's exhaust gases, an atmospheric vent pipe 20 connected to the tank 5 and having an atmospheric vent hole 21 that can be opened to the atmosphere, and a box portion 60 surrounding the atmospheric vent hole 21 of the atmospheric vent pipe 20. The box portion 60 has a vent 61 that communicates with the outside, and the vent 61 is open toward the inside in the vehicle width direction.

The utility model relates to the technical field of gas sensor, specifically disclose a kind of ammonia gas sensor of graphene transistor, including substrate, preferably glass substrate, the top of substrate is provided with first electrode and second electrode, the thickness of first electrode, second electrode is 15nm or 100nm, and material is Ti or Au;First electrode and second electrode between being provided with channel, channel is graphene channel or graphene oxide channel, the top of channel is provided with graphene oxide fragment, and the graphene oxide fragment is discrete graphene oxide fragment of drop coating. The sensor makes full use of the adsorption capacity of graphene oxide, the conductive characteristics of graphene and the isomorphism of both, to greatly enhance gas sensitive characteristics.

The application discloses a preparation method of a VOCs oxidation catalyst, which comprises the following steps: (1) immersing a spherical molecular sieve into a mixed solution of alkali and sodium silicate to perform a hydrothermal reaction, obtaining a spherical molecular sieve carrier with a multi-level pore structure and drying the same; (2) immersing the spherical molecular sieve carrier obtained in the step (1) into an active component-containing precursor salt aqueous solution to obtain a molecular sieve carrier loaded with the precursor salt; (3) drying and calcining the molecular sieve carrier loaded with the precursor salt obtained in the step (2) to obtain the VOCs oxidation catalyst; wherein the active component is one or more of manganese, cobalt, iron and copper. When used for VOCs oxidation catalysis, the method can improve the reaction activity, selectivity and water resistance of the catalyst.

The application discloses a boiler flue tail gas CO2 concentration infrared absorption detection model and a construction method thereof. The construction method comprises the following steps: calibrating experiments on standard gases with different CO2 concentrations to obtain relative light intensity at different wavelengths; analyzing and processing experimental data by different methods; comparing and analyzing processing methods by comparing prediction results of CO2 concentration prediction models of the standard gases obtained by different analysis and processing methods; mixing the standard gases with water vapor to prepare mixed sample gases with different CO2 concentrations; performing infrared detection on the mixed sample gases after condensation and dehumidification and controlling relative humidity of the mixed sample gases to target values to obtain relative light intensity of the mixed sample gases with different CO2 concentrations after dehumidification; and analyzing and processing experimental data by the screened analysis and processing method to obtain a CO2 concentration prediction model of the mixed sample gases after dehumidification. The application can reduce the interference of water vapor in the tail gas on the infrared absorption detection of the CO2 concentration of the boiler flue tail gas, and improve the detection accuracy.

This invention belongs to the field of environmental catalytic materials and air pollution control technology, specifically relating to a cobalt-based MOF derivative catalyst, its preparation method, and its application. The preparation method uses CoMOF74 as a precursor, which is pyrolyzed in air at 350-450℃ for 35 hours to obtain the cobalt-based MOF derivative catalyst. This method, through precise control of the pyrolysis atmosphere and temperature, transforms the precursor into a Co3O4-based catalyst with high crystallinity, abundant surface pores, and fully exposed active sites. This catalyst exhibits excellent activity in the low-temperature catalytic oxidation of toluene. 90 The temperature can be as low as 195℃, and the preparation process is simple and reproducible, making it suitable for the efficient purification of low concentrations of toluene.

The application discloses a kind of industrial VOCs fingerprint spectrum construction methods, comprising the following steps: S1, using off-line sampling in combination with pre-concentration-gas chromatography-mass spectrometry and the combination technology of gas chromatography, the VOCs sample discharged by pollution source is carried out full component capture and detection, obtains the gas chromatogram and characteristic ion signal of full component in VOCs sample;S2, gas chromatogram is compared with standard chromatogram, the type of each component in VOCs sample is identified, structural information is calculated and the volume fraction of each component;S3, according to the structure information of each component in VOCs sample, the unsaturation of each component in VOCs sample is calculated, and the fingerprint index of each component in VOCs sample is calculated according to unsaturation;S4, according to the structure information and fingerprint index of each component in VOCs sample, classification sorting operation is carried out;S5, according to the classification of each component Sorting establishes VOCs fingerprint spectrum.

To provide a combine that allows a space of its machine body to be used effectively, allows an exhaust gas purification device to be installed compactly, and allows excellent weight balance to be achieved.SOLUTION: A combine in which an engine 11 is arranged in the front part of a travelling machine body includes an exhaust gas purification device 30 having a DPF case 31 for removing particulate substances in exhaust gas of the engine 11, and an SCR case 32 for removing nitrogen oxide substances in the exhaust gas of the engine 11. The DPF case 31 and the SCR case 32 are arranged above the engine 11 in the state of vertically arranged in the direction with the longitudinal direction as the back and forth direction.SELECTED DRAWING: Figure 9

The application provides a temperature measurement method based on low-speed sampling parameter identification of laser absorption spectrum, and belongs to the technical field of tunable semiconductor laser absorption spectrum. The used elements include a tunable semiconductor laser, a beam splitter, a collimating mirror, a standard device, a photoelectric detector, a Butterworth low-pass filter, a data acquisition module and a computer; on the basis of the direct absorption spectrum method, the Butterworth low-pass filter is added, the flatness characteristics of the Butterworth low-pass filter in the passband are utilized, the signal with the absorption spectrum information of the measured gas is filtered to remove high-frequency noise, the complete line type of the absorption spectrum is still retained, low-speed sampling can be carried out without spectrum aliasing, the requirement of the direct absorption spectrum method on the sampling rate is reduced, the rapid extraction of the absorption spectrum parameter is realized under low-speed sampling, the data acquisition, storage and calculation costs are reduced, and the temperature measurement efficiency of the direct absorption spectrum method can be effectively improved.

Procedure, comprehensive: during an exhaust gas flow from a vehicle engine (10) through a heat exchanger (54; 176; 402) with an engine coolant flowing therethrough, in response to a difference above a threshold between a measured coolant temperature and a modeled coolant temperature based on the heat transfer between a heat loss source (302) and a vehicle cabin (4), indicating the deterioration of a first and / or second coolant temperature sensor (180; 182), coupled accordingly upstream and downstream of the heat exchanger (54; 176; 402), wherein the heat transfer between the heat loss source (302) and the vehicle cabin (4) is based on one or more of an air mass flow rate between the heat loss source (302) and the vehicle cabin (4) and a temperature of the air entering the vehicle cabin (4) from the heat loss source (302).

The utility model relates to a kind of system of on-line monitoring VOCs and NOx, belong to gas monitoring equipment technical field, including air pump, gas path system, VOCs detection unit, NOx detection unit and workstation, air pump is connected with gas path system, gas path system is connected with the gas path in VOCs detection unit and NOx detection unit respectively, VOCs detection unit and NOx detection unit are electrically connected with workstation;Air pump accesses the gas in environment into gas path system, workstation controls VOCs detection unit and NOx detection unit to monitor the air sample in gas, the system simple structure, small portable, high integration can simultaneously accurately detect VOCs and NOx, reduce detection time and cost, improve efficiency.

The utility model relates to a kind of photocatalyst air purification disinfection machines, including machine body, the machine body is sequentially provided with primary filter, fan, high efficiency filter and photocatalyst component from below to above, the machine body side wall is equipped with air inlet corresponding primary filter, the air inlet side and the air outlet side of the photocatalyst component are equipped with light-shielding ventilation component, multiple photocatalyst modules are arranged in the mounting bracket of photocatalyst component, ultraviolet lamp is arranged in the center of photocatalyst module, and ultraviolet lamp is also arranged uniformly around photocatalyst module outer four quarters.The clean air after the grading filtration of primary filter and high efficiency filter enters the photocatalyst component, ultraviolet lamp is built-in in photocatalyst cylindrical base web, multiple ultraviolet lamps are externally arranged, compact structure, the inner and outer surfaces of photocatalyst module are irradiated, photocatalytic efficiency is greatly improved, it has dust removal clean purification, disinfection and sterilization, decomposition and degradation organic pollutant, generates negative oxygen ion, is beneficial to the health care of human body and other functions, and is widely applicable to multiple places.

The application discloses a system and method for treating high-concentration cyclohexane oxidation tail gas. The system comprises an adsorption / desorption module and an absorption / desorption module, and can directly treat high-concentration cyclohexane oxidation tail gas while meeting the gas emission requirements. The system has the advantages of short overall process, high cyclohexane recovery rate, reasonable energy utilization, low energy consumption and the like.

The application discloses a method for determining tin and inorganic compounds thereof in workplace air. The method comprises the following steps: firstly, using a microporous filter membrane to sample the workplace air; then, using a disposable PP polypropylene digestion tube, a digestion solution and a graphite digestion instrument to digest the microporous filter membrane after sampling; taking down the cooled microporous filter membrane and quantitatively placing it into a test tube by using a hydrochloric acid solution; adjusting the Ph value by using a sodium hydroxide solution and setting the volume to 25.0 mL; preparing a tin standard solution series and drawing a fluorescence intensity-tin content curve by using an atomic fluorescence spectrometer; analyzing the sample by using the atomic fluorescence spectrometer; the sample fluorescence intensity is proportional to the tin content; and obtaining the corresponding tin content from the fluorescence intensity of the sample according to the drawn fluorescence intensity-tin content curve. The method realizes the analysis and determination of trace, ultratrace tin and inorganic compounds thereof, reduces the instability of blank filter membranes caused by external interference, avoids the phenomenon that the blank filter membrane concentration is opposite to the sample concentration, and improves the determination precision.

The present invention relates to a method for controlling the operation of a hydrogen combustion engine system (10) of a vehicle (1). The hydrogen combustion engine system (10) comprises a hydrogen combustion engine (15, 15') and an exhaust aftertreatment system, EATS, (20) configured to reduce emissions in the engine exhausts. The EATS (20) comprises a selective catalyst reduction, SCR, catalyst (40) and an ammonia slip catalyst, ASC, (50) arranged downstream of the SCR catalyst (40). The method comprises: identifying (S10) a regeneration time window for performing regeneration of the ASC (50); in response of identifying the regeneration time window, operating the hydrogen combustion engine (15, 15') in an H2 exhaust excess mode defined by an amount of unburnt H2 of at least 1.5 mol% in the engine exhaust and regenerating the ASC (50) by using the unburnt H2 in the engine exhausts and reaching a regeneration temperature of at least 500 °C.

The utility model discloses a waste gas absorption tower for acid regenerator unit, including spray tower body, the inlet pipe is installed to the spray tower body lower extreme, the liquid discharge pipe is installed to the spray tower body lower extreme, the liquid injection pipe is installed to the spray tower body upper extreme, the waste gas absorption mechanism is installed in the spray tower body, the waste gas absorption mechanism includes the filler layer, the draft tube, the drive frame. The utility model has the advantages that liquid can be sprinkled on the filler through the opening on the draft tube, thereby the contact time of gas and liquid can be increased, the spraying range of liquid can be increased by rotating the draft tube through the drive frame, the draft tube can also be moved, thereby the position of the opening on the draft tube can be changed, so that the liquid on the draft tube can fall on every position on the filler, thereby the liquid spraying can be more uniform, and the absorption efficiency of gas is improved.

A composite material for gas capture, notably CO2 capture and storage. The composite material includes a mixture of a solid or liquid reactive filler and a gas-permeable polymer such that the reactive filler forms micron-scale domains in the polymer matrix.

The application discloses a kind of waste gas desulfurization and denitrification treatment devices, it is related to waste gas processing technical field, including equipment shell and fixed grid plate, fixed grid plate is fixedly installed in the inner wall of equipment shell, the inner wall of fixed grid plate is fixedly installed with fixed grid strip, the top surface of equipment shell is provided with sealing cover;The application is moved linearly in the straight reciprocating movement of movable grid plate in limiting sliding slot, the structure design of staggered arrangement and all being diamond cross section using extrusion grid strip and fixed grid strip, the extrusion ridge of adjacent grid strip is mutually close and forms V-shaped occlusion gap, realizes the in situ extrusion broken arch of jamming solid waste, and is completely crushed, simultaneously using diamond flow guide surface of inclination setting guides the waste residue after crushing to rely on gravity self-flow sliding, to make up the defect that existing grid strip is flush section and lacks extrusion broken arch capacity, waste residue is easily jammed in gap and forms bridge blockage, leading to system wind resistance sharp rise and seriously influence the continuous operation of downstream equipment.