14results about How to "Solve the emission problem" patented technology

The invention provides a spark source atomic emission spectrometry determination method for acid-soluble aluminum and inclusion aluminum, and belongs to the technical field of assessment of inclusions in steel. The spark source atomic emission spectrometry determination method for acid-soluble aluminum and inclusion aluminum comprises the following steps: establishing a calibration curve of all aluminum, then determining integral intensities of inclusion aluminum, all aluminum and acid-soluble aluminum in a sample under corresponding conditions, and calculating the intensity of the inclusion aluminum by using a difference value between the integral intensities; selecting two standard samples with adjacent strength according to the strength of aluminum inclusion in the sample, and calculating a calibration coefficient K according to the aluminum content Al% lt; the excitation rate F is calculated according to the peak integral intensity of the inclusion aluminum and the integral intensity of the total aluminum in the 0.0007% standard sample, the inclusion aluminum content Als% is equal to K * F * (IAlt-IAls), and the content of the acid-soluble aluminum is equal to the difference between the content of the total aluminum and the content of the inclusion aluminum. According to the method, the accuracy of a measurement result is effectively improved while high analysis speed, low cost and simplicity and convenience in operation are ensured.

This invention provides a method for collecting gases from the pre-splitting blasting of steeply inclined, extra-thick coal seams, comprising: S1: calculating the blasting parameters for pre-splitting blasting of steeply inclined, extra-thick coal seams and determining the construction location of the blasting holes; S2: combining the blasting parameters, empirical formulas, and theoretical calculations to determine the composition and pressure of the harmful gases generated after the pre-splitting blasting of steeply inclined, extra-thick coal seams, and fixing a gas collection device at the orifice of the blasting hole; S3: selecting an extraction system based on the content of the harmful gases generated after blasting, and discharging the harmful gases collected by the gas collection device through the extraction system; S4: comparing the composition and content of the harmful gases generated after blasting with the gas drawn into the extraction system to verify the extraction effect of the extraction system. The technical solution provided by this invention can solve the problem in existing technologies of not discharging the harmful gases generated after pre-splitting blasting.

This application discloses an ammonia-fume mixing device, relating to the field of flue gas denitrification technology. It includes an ammonia injection grid module, an ammonia nozzle, a primary mixing impeller, a primary impeller shaft, a secondary mixing impeller, and a secondary impeller shaft. Each ammonia injection grid module has an independent inlet header, one end of which is connected to an external ammonia supply system, and the other end is connected to the ammonia nozzle. Each ammonia injection grid module has multiple primary mixing impellers, which are mounted on the ammonia injection grid module via the primary impeller shaft, rotating around the primary impeller shaft under the drive of the flue gas. The secondary mixing impeller is located directly above the ammonia injection grid module, with each secondary mixing impeller corresponding to one ammonia injection grid module. It is fixed to the flue gas duct via the secondary impeller shaft, and the axial direction of the secondary mixing impeller is the same as the flue gas flow direction, rotating around the secondary impeller shaft under the drive of the flue gas. This solves the problem of how to effectively avoid uneven ammonia-fume mixing and reduce NO in the flue gas. x The issue of emissions.

The invention discloses a drainage structure for protecting water and soil resources in mountainous areas, belongs to the technical field of drainage in mountainous areas, and provides the following scheme that the drainage structure comprises a composite drainage ditch and an automatic filtering and pollution discharging mechanism, and the automatic filtering and pollution discharging mechanism is located below a water source diversion port; the multiple interception structures are combined to form the trash rack, water flow can intercept sundries and large silt, the pretreatment effect is achieved, then, under driving of the driving assembly, the interception structures can rotate at a constant speed, the interception structures alternately enter the downward interception areas, and therefore the trash rack is formed. When one end of the interception structure enters the cambered surface protruding section, the interception structure retracts, then sundries and impurities smoothly enter the collecting assembly to be collected, the interception structure after removal is reset again and put into use again, the interception effect is circularly guaranteed, and the problem of interception failure caused by long-term stress and sundries coverage of a traditional fixed interception structure is solved; the stable interception efficiency is ensured.

The utility model relates to the field of sensor installation especially relates to a sensor exchange device for special operation robot, including the extension cylinder, the one end center place of extension cylinder is welded with the locating block, and the center place of extension cylinder and locating block is equipped with the locating hole, be equipped with detection assembly in the locating hole, and the one end of extension cylinder is installed with solenoid valve, detection assembly includes the thread groove of opening in the extension cylinder one end outer wall center place, the temperature sensing probe of sliding connection in the inner wall of locating hole, be equipped with the thread block of temperature sensing probe one end outer wall and weld the sealing disc of thread block one side outer wall. The utility model starts solenoid valve and closes the one end of extension pipe, and the rotation block drives and thread block rotation loosens, and temperature sensing probe is extracted from locating hole, reduces the object discharge capacity, is convenient for replacing sensor, is convenient for sealing, solves a large number of emission problems.

The invention provides a combined membrane method resourceful treatment device and process for a desulfurization solution, and belongs to the technical field of industrial wastewater treatment. The device comprises a plate-and-frame filter press, a homogeneous membrane / reverse osmosis membrane, a nanofiltration membrane, an activated carbon decoloration tank, an evaporator, a first cooling pelleter, an ultrasonic-assisted ozone centrifugal reactor, a sulfur melting kettle, a second cooling pelleter, an ultrafiltration membrane and a bipolar membrane. By means of the synergistic effect of ultrasonic cavitation and ozone oxidation, thiosulfate is efficiently decomposed, elemental sulfur is directionally generated, and a high-quality sulfur product is obtained by matching with refining of the sulfur melting kettle; meanwhile, thiocyanate and sulfate / thiosulfate are accurately separated through a nanofiltration device, a high-purity thiocyanate product is produced through activated carbon decoloration and evaporation concentration, then bipolar membrane electrodialysis is used for directly converting sulfate into recyclable acid and alkali, various high-value resources are systematically recycled, and the method is suitable for industrial production. The problems of low resource recovery rate and insufficient product purity of the traditional process are solved.

This invention relates to a method for purifying water from deep, water-rich tunnels using a construction inclined shaft. The method includes the following steps: preliminary purification of the tunnel surface at the support face, including preliminary purification of the tunnel surface along the slope and against the slope; the installation of multi-stage sedimentation tanks within the main tunnel; the installation of water storage tanks and pumping stations; and further purification of tunnel wastewater in an external sedimentation tank. This method effectively removes tunnel construction wastewater through a preliminary purification system on the surface and through internal and external sedimentation and purification systems, ensuring a good construction environment. It has the advantages of being simple and practical, having good drainage and filtration effects, low pollution control costs, and enabling on-site recycling and reuse of wastewater with good overall performance.

The invention discloses a method for preparing ethanol through detoxification-free fermentation of furfural residues and application. The method comprises the following steps: S1, carrying out high-solid-content enzymolysis on acidic furfural residues which are not subjected to any detoxification pretreatment to obtain furfural residue enzymatic hydrolysate; s2, liquefying and saccharifying the waste starch to obtain a starch saccharification liquid; and S3, mixing the furfural residue enzymatic hydrolysate and the starch saccharification liquid in proportion, inoculating zymomonas mobilis, and carrying out co-fermentation to produce ethanol. According to the method, key technologies such as detoxification-free treatment, high-solid-content enzymolysis and co-fermentation with starch saccharification liquid are combined, and the steps of neutralization, water washing and deep detoxification which are necessary in a traditional process are thoroughly abandoned, so that the process is greatly simplified, water resources are saved, the treatment cost is reduced, and the problem of toxicity of inhibitors in raw materials is effectively solved. The method provides an efficient, economical and environment-friendly brand-new way for realizing high-valued resource utilization of the furfural residues and the waste starch.

This invention discloses a near-zero emission system for producing syngas from natural gas, comprising a syngas conversion system, a syngas purification system, a syngas decarbonization system, and a tail gas recovery system. The invention first preheats and desulfurizes the raw natural gas, with the heat for preheating and desulfurization originating from the flue gas from the converter reaction. The crude syngas from the converter reaction is cooled and then purified in a CO2 absorption tower and a PSA purification and separation unit to obtain the syngas product. The CO2 absorption tower, CO2 stripping tower, and MDEA reboiler are interconnected to form a CO2 decarbonization system for recovering CO2 from the tail gas. This invention couples the desulfurization unit, denitrification unit, and heat exchange tubes within the flue gas duct, achieving both flue gas heat recovery and utilization, while also featuring a compact equipment structure and small footprint. By coupling and adjusting the process system, this invention achieves high efficiency, low energy consumption, and reduces the emission concentration of waste gas, reaching near-zero emissions and demonstrating high energy utilization efficiency.

A process and a system for cleaning acetylene and sulfuric acid relate to the technical field of acetylene cleaning processes, and the system comprises an acetylene pretreatment device, an acetylene water removal device, an acetylene impurity removal device, an acid mist trapping device, a sulfuric acid circulating device, a sulfuric acid storage device, an acetylene cooler of the acetylene pretreatment device and an acetylene demister, the acetylene demister is communicated with a sulfuric acid washing tower of an acetylene water removal device, the sulfuric acid washing tower is connected with a bubble cap combination tower of an acetylene impurity removal device, the bubble cap combination tower is connected with an acid mist trapping device, and the acid mist trapping device is an acid mist trap; the sulfuric acid circulating device comprises a sulfuric acid washing tower circulating device and a bubble cap combined tower circulating device. According to the invention, the problem of sewage discharge is solved; waste acid can be recycled and mixed with limestone powder to serve as a cement raw material, sulfur and phosphorus in acetylene gas are removed more thoroughly, and meanwhile, the water mass fraction of acetylene gas is reduced, so that the service time of a synthetic converter catalyst is prolonged, the unit consumption of the catalyst is reduced, and the safety coefficient is improved.

The application discloses a kind of solid insulation combined electric appliance switches of direct-acting, it is related to the field of medium and high voltage power distribution switchgear, to solve the problem that existing SF6 switchgear cannot consider environmental protection, miniaturization and reliability.The switch includes mechanism box and the first insulating cylinder and the second insulating cylinder sealedly installed in the lower side thereof, the first insulating cylinder is integrated with the direct-acting disconnecting switch, the first grounding switch and the circuit breaker, the second insulating cylinder is integrated with the second grounding switch and the fuse, and the vertical direct-acting opening and closing of the corresponding switch is driven by three groups of operating mechanisms respectively, and the grounding operating mechanism can synchronously control the first grounding switch and the second grounding switch.The application completely abandons the use of sulfur hexafluoride gas, adopts direct-acting structure and solid insulation integrated design, realizes switch miniaturization, high reliability and maintenance-free, greatly improves insulation performance and environmental adaptability, and meets environmental protection requirements.

The application discloses a durable non-woven polishing product and a production method thereof, and the durable non-woven polishing product comprises a fiber non-woven fabric substrate and a slurry coated on the fiber non-woven fabric substrate, the slurry comprises hard glue, soft glue, abrasive, filler and auxiliary agent, the glue part is composed of the hard glue and the soft glue, and the glue part is a water-based glue system, and the elasticity of the product is adjusted by changing the proportion. The slurry system of the durable non-woven polishing product is an environment-friendly compound water-based glue system, the problem that a large amount of organic solvent is used as a diluent in the existing winding roller process to generate a large amount of emissions is solved, the wear resistance of the polishing product is excellent, and meanwhile, the production method shortens the required curing process time to one third of the original time, and the energy consumption is reduced to less than 20% of the original energy consumption.

The invention belongs to the field of composite materials, and provides a silicon-acrylate adhesive, cotton and membrane material composite material. According to the invention, a four-layer composite structure design of the A-surface silica gel layer, the solvent-free curing isolation barrier layer, the composite carrier layer and the B-surface acrylate adhesive layer is adopted; the heterogeneous double-sided bonding performance that a high-solid-content low-viscosity coating window, an ultrathin solvent-free isolation layer and high-barrier migration resistance are achieved, the peeling strength of a surface A to silicone rubber is not lower than 6N / 25mm, and the lasting adhesion of a surface B to a metal base material is not lower than 24h is achieved; the technical problem that a traditional double-faced adhesive tape system is difficult to consider the ultrathin coating coiling process, the high cohesion creep resistance and the size stability under multiple thermal history conditions is solved, and the double-faced adhesive tape has wide application value.

The application discloses an inlaid biodegradable polyurethane / lignin composite material and a preparation method and application thereof. The preparation method of the inlaid biodegradable polyurethane / lignin composite material comprises the following steps: (1) obtaining NCO-terminated polyurethane prepolymer by taking polycaprolactone, polycarbonate diol and polyisocyanate as raw materials; (2) mixing and stirring lignin with the NCO-terminated polyurethane prepolymer under a solvent-free condition; (3) adding glycerol or 1,4-butanediol into the system to perform a chain extension reaction, so as to obtain a chain-extended product; and (4) vulcanizing the chain-extended product to obtain the inlaid biodegradable polyurethane / lignin composite material. The application provides application of the composite material in preparation of an armored track shock-absorbing block. The polyurethane / lignin composite material prepared by the application has high strength, low compression permanent deformation and biodegradability and the like, and can improve the bearing capacity and durability of the armored track as a whole.