1189results about How to "Improve absorption efficiency" patented technology

The invention is applicable to the field of photovoltaic technology, and provides a solar cell, a cell assembly and a photovoltaic system.The solar cell comprises a silicon substrate, the silicon substrate is provided with a backlight face and a light facing face which are oppositely arranged, a plurality of grid lines and a plurality of microarrays are arranged on the backlight face side by side in the first direction, and the grid lines extend in the second direction; the microarray comprises a plurality of arranged microstructure units, an included angle is formed between the microarray and the grid line, and the first direction is crossed with the second direction; the length of the silicon substrate in the second direction is L, the range of the two side edges, parallel to the first direction, of the silicon substrate extending towards the center line by L / 9 is an edge area, the included angle in the edge area is alpha, the included angle in the area close to the position of the center line is beta, and the angle of alpha is larger than that of beta. The absorption path of light in the silicon wafer is increased, the diffuse reflection effect of reflected light of backlight surfaces in different areas is promoted, and therefore the absorption efficiency of the light is improved.

The invention discloses a construction method for governing and repairing desertification degraded grassland in an arid area, and relates to the technical field of sand governing. The method comprises the following steps: evaluating a native vegetation type, vegetation coverage, a soil degradation and desertification degree, a soil type and a water resource condition; performing classified measures according to natural conditions, and determining different types of dune (flowing, fixed or semi-fixed) treatment measures; construction preparation; grid sand barriers are laid on the windward sides of the moving dunes and the semi-fixed dunes, and sand stabilization operation is conducted in a mechanical and manual combined mode; digging pits to plant indigenous shrubs subjected to special treatment, and using rooting water retention bags to improve the survival rate; the granular organic fertilizer and the seeds are mixed and stirred according to a certain proportion and then sown into soil at a time, the operation frequency is reduced, and precise fertilization is achieved. Through effective sand prevention and control measures, the sand wind damage is reduced, the living environment of farmers and herdsmen is protected, and the living quality is improved.

The invention discloses a chemical tail gas purification and absorption device and method, and relates to the technical field of tail gas purification and absorbing.The chemical tail gas purification and absorption device comprises a treatment tank, a gas inlet is fixedly formed in the outer wall of the treatment tank, a gas outlet is fixedly formed in the top of the treatment tank, spraying tanks are arranged on the two sides of the treatment tank, and spraying pipes are fixedly mounted at the tops of the spraying tanks; a water pumping device is mounted between the spraying tank and the treatment tank in a communicating manner; the spraying device is arranged on the surface of the spraying pipe, the spraying device comprises a supporting frame, a driving fan, a fixing rod, a circular plate, a circular block, a spraying box, a fixing plate, an L-shaped plate, a semicircular plate and a scraping plate, purified gas is exhausted by driving the fan to rotate, and sprayed liquid is splashed out when impacting the L-shaped plate through dislocation of a spraying head and a circular hole, so that the spraying effect of the spraying device is improved. The sputtered liquid is wider, the spraying effect is improved by enabling the liquid to be sprayed more widely, and the absorption efficiency is improved.

The invention relates to a composite multi-effect scale and corrosion inhibitor and a preparation method thereof, and belongs to the technical field of water treatment agents.The composite multi-effect scale and corrosion inhibitor is prepared from carboxylic acid monomers, sulfonate monomers, organophosphorus compounds, modified chitosan, modified nanometer titania, oxidation type initiators, reduction type initiators, azole derivatives and the like, the modified chitosan is formed by coating the surface of chitosan with cerium chloride; the modified nano titanium dioxide is formed by coating the surface of nano titanium dioxide with sodium polyaspartate. The composite multi-effect scale and corrosion inhibitor is prepared in a mode of compounding while synthesizing, the scale inhibition effect is excellent, the comprehensive descaling capacity can reach 97% or above, and the composite multi-effect scale and corrosion inhibitor can be used for a high-pH, high-alkalinity, high-temperature and high-hardness circulating cooling water system under the high-concentration-multiple operation condition; the method is suitable for circulating cooling water treatment requirements under harsh conditions in industries such as chemical industry, smelting and light industry.

The invention discloses an amino acid phagostimulant for juvenile helichthys nobilis, which mainly comprises aspartic acid, glutamic acid, alanine, glycine, proline and methionine in a content ratio of (4-5): (5-6): (4-5): 3: 2: 1, and the six amino acids are reasonably compounded, so that the phagostimulant for the juvenile helichthys nobilis achieves the best phagostimulant effect on the juvenile helichthys nobilis. The invention also discloses a juvenile mollusca lanuginosa feed based on the amino acid phagostimulant, the juvenile mollusca lanuginosa feed comprises a basal feed and the phagostimulant, and the mass percentage content of the phagostimulant in the juvenile mollusca lanuginosa feed is 0.79-0.96%. The amino acid phagostimulant is added into the basal feed, so that the food-calling fresh fruit of the young mollusca is obviously higher than that of traditional baits, the increase rate of the body weight and the body length of the young mollusca is higher, the survival rate is maximum, and the application prospect is very good.

The invention discloses a carbendazim production tail gas absorption treatment system, which comprises an absorption tower and an absorption liquid lifting device, the top end of the absorption tower is provided with a tail gas discharge port, the bottom end of the absorption tower is provided with a liquid discharge port, one side of the absorption tower close to the bottom end is provided with a gas inlet pipe, and one side of the liquid discharge port is provided with a circulation branch; the liquid outlet is connected with the liquid inlet end of the absorption liquid lifting device, the liquid outlet end of the absorption liquid lifting device is connected with a spraying pipe, one end of the spraying pipe extends to the position, close to the top end, in the absorption tower, and a sprayer is fixed to the end of the spraying pipe. An upper screen plate and a lower screen plate are respectively fixed below the sprayers in the absorption tower, and a filler is arranged between the upper screen plate and the lower screen plate. Through the design that tail gas makes contact with the absorption liquid from bottom to top and then makes secondary contact with the absorption liquid through spraying, the gas-liquid contact area is increased by combining the filler between the upper net plate and the lower net plate, the tail gas absorption efficiency is remarkably improved, carbendazim production tail gas can be effectively purified, pollution of harmful gas emission to the environment is reduced, and the environment protection requirement is met.

The invention relates to the field of disposable hygienic products, in particular to a paper diaper with a fluffy non-woven fabric core body of a net structure and a preparation process of the paper diaper, and mainly solves the problems that in the prior art, macromolecular water-absorbent resin particles of an online water-absorbent paper core body are difficult to enter fluffy non-woven fabric, and the strength is poor. The paper diaper body comprises a liquid-permeable surface layer, an absorption core layer and a liquid-tight bottom layer which are sequentially stacked from top to bottom; the absorption core layer comprises a first fluffy non-woven fabric, a second fluffy non-woven fabric compounded on the lower surface of the first fluffy non-woven fabric and macromolecular water-absorbent resin particles laid on the upper surface of the first fluffy non-woven fabric; at least two material storage areas are arranged on the first fluffy non-woven fabric side by side in the transverse direction, holes are punched or embossed on the first fluffy non-woven fabric in each material storage area, and the macromolecular water-absorbent resin particles comprise first macromolecular water-absorbent resin particles which are distributed in each material storage area.

The invention discloses a sewage treatment pipeline, and relates to the technical field of pipelines. The sewage treatment pipeline comprises pipeline bodies, and the pipeline bodies are fixed through a connecting mechanism; the connecting mechanism comprises a base, the top of the base is fixedly connected with two symmetrically-arranged first clamping hoops, and the side wall of each first clamping hoop is rotationally connected with a second clamping hoop through a rotating assembly. According to the sewage treatment pipeline, when the pipeline body is connected, more convenience and rapidness are achieved, meanwhile, automatic blowing cleaning can be conducted on the end face and the side wall of the connecting part, the sealing effect is guaranteed, when the sewage treatment pipeline is used, impurities can be intercepted on the surface of the filter screen and in the working pipe, blockage of the pipeline body can be avoided, and meanwhile, the pipeline body is prevented from being blocked. According to the pipeline, intercepted impurities can be absorbed, in addition, the surface of the filter screen can be subjected to absorption, scraping and vibration cleaning, the cleaning efficiency and effect are guaranteed, and then the using effect and the service life of the pipeline body are guaranteed.

The invention relates to the technical field of photovoltaic cells, and discloses a back contact solar cell and a preparation method thereof. The preparation method comprises the following steps: providing a substrate layer of a first conductive type having a first surface and a second surface opposite to each other; a first groove is formed in the first surface, and a bulge is formed beside the first groove; performing doping treatment on the inner wall surface of the first groove to form a first doping layer; the first doped layer is of a second conductive type; forming a passivation layer on the surface of the first doping layer; a second groove isolated from the first groove is formed in the protrusion; forming a first tunneling oxide layer on the second groove; forming a second doping layer of the first conduction type in the second groove and on the first tunneling oxide layer; a first electrode and a second electrode are formed, the first electrode penetrates through the passivation layer to be connected with the first doping layer, and the second electrode is connected with the second doping layer. The first groove and the second groove which are relatively isolated are formed by grooving at different positions of the substrate layer, so that efficient current collection is facilitated, short circuit is prevented, and the photoelectric conversion efficiency and the power generation efficiency are improved.

The invention discloses a special growth-promoting microbial fertilizer for saline-alkali soil and a preparation method of the special growth-promoting microbial fertilizer, and belongs to the technical field of growth-promoting microbial fertilizer.The special growth-promoting microbial fertilizer for saline-alkali soil is obtained by mixing organic manure, ammonium humate, fungicide particles, crop straw, slow-release phosphate fertilizer particles, hydroxyapatite, chitosan and citric acid in proportion; according to the granular microbial inoculum carrier, the biochar particles and the iron-carbon composite microspheres serve as matrixes, the raw materials such as the fly ash form a foaming porous adhesive substance under the action of alkali excitation, the matrixes such as the biochar particles are bonded, a stable porous structure can be formed easily, a proper environment is provided for growth of phosphate solubilizing bacteria, and the phosphate solubilizing and growth promoting effects of the phosphate solubilizing bacteria are improved. The microbial agent particles have good water absorption and can adsorb sodium ions in soil after being watered, and calcium and magnesium components contained in the fly ash-based adhesive substance can be exchanged with the sodium ions to play a fixing role, so that the salt stress effect on crops is reduced.

The invention discloses a form and data visual display method and system based on a low-code platform, and belongs to the technical field of software development, and the method is implemented by the following steps of: visually creating a form, and providing a core component for creating the form based on a webpage draggable technology so as to create a complete form meeting business requirements; the drag configuration comprises form layout configuration and form item configuration; persisting the form, storing configuration data of the form in a database, materializing a table structure, and storing a JSON object of configuration of the form; setting a form data model; setting access authority; accessing by a form filling person; performing dynamic rendering; and storing the filling data of the form filling person. According to the method, a large amount of repeated work can be solved, more concerned services can be developed, the efficiency can be quickly improved, the research and development cost can be saved, and meanwhile flexibility is kept.

The invention discloses a compound feed additive as well as preparation and application thereof, and belongs to the technical field of feeds. The additive comprises a first composition and a second composition, the first composition comprises microcapsules formed by coating short-chain fatty acid and / or short-chain fatty acid derivatives with triglyceride carrying beta-glucuronide residues, and the second composition comprises microcapsules formed by coating short-chain fatty acid and / or short-chain fatty acid derivatives with triglyceride carrying beta-glucuronide residues. The second composition comprises medium-chain fatty acid and / or medium-chain fatty acid derivatives, and microcapsules formed by coating short-chain fatty acid and / or short-chain fatty acid derivatives with long-chain fatty acid and / or long-chain fatty acid derivatives. The invention effectively solves the problem that short-chain fatty acids and derivatives thereof are decomposed in advance before reaching target sites of intestinal tracts, so that the short-chain fatty acids and derivatives thereof can be transported to the whole course of digestive tracts, realize precise metabolism of parts in colon positions, and are suitable for balance of long-chain, medium-chain and short-chain fatty acids in intestines and stomachs of piglets. The feed can achieve the positive effects of promoting growth, improving the digestibility of nutrient substances, improving intestinal health and the like, and has a good application prospect in animal breeding.

The invention discloses detection and sampling equipment for an acid solution, and relates to the technical field of acid solution sampling, the detection and sampling equipment comprises a sampling tube, the sampling tube is used for collecting and sampling the acid solution, a fixed tube is fixedly mounted in the middle of the top of the sampling tube, and a liquid discharge tube is arranged in the middle of the bottom of the sampling tube; the rotary suction assembly is used for stirring and sucking an acid solution, and a motor is fixedly mounted at the bottom of the rotary suction assembly. According to the detection and sampling equipment for the acid solution, the sampling pipe is arranged to be of a double-layer structure, the sampling pipe is thrown into the solution tank so that the acid solution can be poured into the top cover along the round hole, the bent cover is arranged on the outer side of the round hole so that the acid solution can be guided and conveyed, and the output end of the motor drives the rotating rod to rotate in the top cover; the stirring swing frame and the stirring piece are driven to stir the acid solution in the top cover, so that the acid solution is stirred to form a flowing vortex in the top cover, the flowability of the acid solution during sampling is improved, and the absorption efficiency of the acid solution is accelerated.

The invention discloses application of a composition in preparation of an iron supplementing preparation. The composition comprises dogwood and / or a dogwood extract and mangosteen and / or a mangosteen extract. Through compatibility of the active components, the composition provided by the invention can promote absorption of an iron element by a body by promoting intestinal iron absorption and / or inhibiting hepcidin and other mechanisms, plays a role in supplementing iron, further can be used for treating indications such as functional iron deficiency and the like, provides a more effective preparation for improving iron deficiency of the body, and has wide application prospects. Meanwhile, the preparation prepared from the composition also has the effects of regulating physique, tonifying deficiency and qi, regulating the health condition of the body and the like.

The invention discloses a ganoderma lucidum edgeworthia chrysantha promoting agent for promoting efficient edgeworthia chrysantha of aquilaria plants, and belongs to the technical field of edgeworthia chrysantha of aquilaria plants. The component A is prepared from the following components in parts by weight: 20 to 40 parts of aspergillus niger microbial fermentation liquor, 15 to 30 parts of verticillium fulvum microbial fermentation liquor, 10 to 15 parts of fusarium oxysporum microbial fermentation liquor, 5 to 10 parts of ganoderma lucidum extract, 6 to 8 parts of seaweed extract, 2 to 8 parts of malic acid, 3 to 6 parts of fructose, 1 to 3 parts of pectinase and 0.5 to 2 parts of cellulase. Through the synergistic effect of the component A and the component B, the agilawood formation rate and quality of agilawood are effectively improved, the synergistic effect of microorganisms stimulates the agilawood formation potential of plants, accurate regulation and control of the plant hormone xylan emulsion provide conditions for synthesis and accumulation of agilawood substances, and compared with a traditional agilawood formation method, the agilawood formation method has the advantages that the agilawood formation rate is increased, and the agilawood formation quality is improved. According to the method, the agilawood with higher quality can be obtained within shorter time, and the yield is increased.

The invention provides a high-salinity high-tidal-flat mangrove forest ecological restoration method. The high-salinity high-tidal-flat mangrove forest ecological restoration method comprises the following steps of S1, soil improvement, S2, seedling cultivation, S3, seedling planting, S4, seedling reseeding, S5, bank protection device arrangement and S6, pest control. The soil conditioner is used for improving the soil structure and reducing the soil salinity. Salt-resistant domestication is performed on the seedlings by gradually improving the salinity of irrigation water, so that the salt resistance of the seedlings is improved. Organic fertilizer, ferriporphyrin, abscisic acid and brassinolide are used for providing nutrients for seedlings, osmotic equilibrium in plants is adjusted, opening and closing of air holes are adjusted, plasticity of cell walls is adjusted, and therefore the salt resistance of the plants is enhanced. According to the method, the roots of seedlings are inoculated with the halorhodobryum terbach and the proteobacteria, the halorhodobryum terbach and the proteobacteria terbach form a symbiotic relationship with the roots of plants, a microbial community is formed, and the absorption efficiency of the plants to nutrients in soil is According to the method, the planting survival rate and the plant growth rate are improved through the multi-way overall synergistic effect, and then the biological diversity is improved.

The invention provides a slope cropland fertilizing device and method, belongs to the technical field of fertilizing, and aims to solve the problem that a fertilizing device special for slope cropland is lacked in the prior art. Comprising a vehicle body, a chemical fertilizer box, a fertilizer distributor, a mixer, a fertilization angle adjusting assembly and a fertilization gun, a power device is arranged on the vehicle body, the vehicle body is driven by the power device to advance, and a handrail is fixedly arranged on the back of the vehicle body; the chemical fertilizer boxes are symmetrically and fixedly arranged on the two sides of the vehicle body, through holes are formed in the bottoms of the chemical fertilizer boxes, the through holes in the bottoms of the chemical fertilizer boxes are communicated with the fertilizer distributors, and the fertilizer distributors are used for quantitatively measuring chemical fertilizers; the bottom of the fertilizer distributor is communicated with the mixer; the fertilization angle adjusting assembly is arranged at the bottom of the vehicle body; the fertilization angle adjusting assembly is used for adjusting the fertilization angle; the fertilizing gun is mounted on the fertilizing angle adjusting assembly.

The invention discloses high-lead BGA welding equipment for integrated circuit packaging, and relates to the technical field of welding equipment, and the high-lead BGA welding equipment comprises a composite mechanism. According to the high-lead BGA welding equipment for integrated circuit packaging, through the design of a composite mechanism, materials are placed on the placing table, then the materials are clamped through the clamping mechanism, so that the effect of fixing the materials is achieved, the situation that the welding efficiency and the welding quality are affected due to deviation when the materials are welded is prevented, the bogie can rotate at the top of the welding frame, and the welding quality is improved. The welding machine is in sliding connection with the sliding set, so that the effect of adjusting the welding height is achieved, the application range is expanded, materials are welded through a welding opening, a positioning mechanism is aligned with a material welding point during welding, the effect of pre-positioning is achieved, the welding precision is improved, deviation is prevented, and the welding efficiency is improved. The welding efficiency is improved.

The invention discloses a semiconductor laser processing method and device, and the method comprises the steps: S1, carrying out the pretreatment of the surface of a diamond blank, coating a layer of optical reinforcing material, and obtaining the morphology data of the surface; s2, identifying a surface fluctuation area according to the morphology data; s3, performing surface regulation and control treatment on the surface fluctuation area by adopting preset laser parameters; s4, performing cutting processing by using a laser beam to form a diamond substrate; s5, after cutting is completed, appearance detection is carried out, and classification is carried out according to a detection result; the surface of a diamond blank is coated with an optical absorption enhancing material, the laser absorption efficiency of the material is remarkably improved, three-dimensional laser scanning and surface regulation and control treatment are utilized, micro fluctuation of the surface of the diamond blank is fully considered, the laser machining uniformity is improved, and the cutting precision and the surface quality in the machining process are improved; and high-quality laser processing of the polycrystalline diamond substrate is realized.

The invention relates to the technical field of carbon capture, in particular to a capture system and process for treating carbon dioxide in flue gas. The trapping system comprises a trapping unit which is provided with gas-liquid mass transfer equipment, a regeneration tower and a solution circularly flowing between the gas-liquid mass transfer equipment and the regeneration tower and is used for absorbing and desorbing carbon dioxide; the liquefaction unit is communicated with the regeneration tower and is used for compressing, drying and liquefying the carbon dioxide discharged from the regeneration tower; wherein the solution has two states: carbon dioxide is absorbed in the gas-liquid mass transfer equipment to form a rich solution, and the carbon dioxide is desorbed in the regeneration tower to form a barren solution; the trapping unit is provided with a process module for treating a solution, and the gas-liquid mass transfer equipment is communicated with the regeneration tower through the process module. In the invention, through the process module, the heat exchange efficiency of the trapping system is greatly optimized, the energy consumption required by rich liquid regeneration is reduced, and the size of equipment in the trapping system is greatly reduced.

The invention discloses an instant recombinant collagen nanofiber mask as well as a preparation method and application thereof. The nanofiber facial mask in the facial mask is a layered substance formed by continuously stacking fibers by taking small-molecular-weight recombinant collagen, high-molecular-weight recombinant collagen and water-soluble polymers as matrixes and utilizing an electrostatic spinning technology, and has the advantages of large specific surface area, high porosity, high active substance loading rate and the like; the active ingredients are attached or embedded into the nanofibers in the form of small particles, so that the absorption efficiency is higher, and the active ingredients can easily permeate into the deep layer of the skin, so that the functions of moisturizing, resisting oxidation, resisting inflammation, resisting aging, whitening, relieving and the like are achieved.

The invention discloses a double avalanche junction SPAD device and a preparation method thereof, and relates to the technical field of semiconductor device processing technology, the method comprises the following steps: providing a first doping type substrate with a specific doping concentration, the substrate comprising an epitaxial layer; performing doping of a second doping type on the epitaxial layer to form a first region, and forming a first avalanche junction region by the first region and the epitaxial layer; performing ion implantation of the first doping type on the epitaxial layer above the first region to form a second region, and forming a second avalanche junction region by the second region and the first region; and performing doping of the first doping type on the epitaxial layer above the second region to form an anode lead-out region of the second avalanche junction region.

The invention belongs to the technical field of flue gas waste heat recovery, and particularly relates to a converter flue gas dust removal and waste heat recovery device and method.The converter flue gas dust removal and waste heat recovery device comprises a dust removal assembly and a waste heat recovery assembly, the waste heat recovery assembly comprises a flue gas treatment box, and the flue gas treatment box comprises a box body; the middle area in the box body is a heat exchange area, and a heat exchange pipe is transversely arranged in the heat exchange area; flue gas is guided into the heat exchange pipes which are uniformly distributed, so that the flue gas passes through the heat exchange pipes with narrow channels, the heat exchange area is increased, and the absorption efficiency of heat in the flue gas is improved; and by arranging the dust removal pipe, the flue gas can only penetrate through the dust removal pipe to enter the heat exchange gap to be in contact with the inner wall of the heat exchange pipe, and particle smoke dust in the flue gas is left on the inner wall of the dust removal pipe, so that in the contact heat exchange process of the flue gas and the dust removal pipe, the situation that the particle smoke dust adheres to the inner wall of the heat exchange pipe and continuously accumulates and scales is reduced.

The invention relates to the technical field of flue gas treatment, and provides a tail gas absorption tower for O-methyl-N-nitroisourea production, the tail gas absorption tower comprises a shell, the shell is provided with an absorption cavity; one end of the liquid inlet pipe extends out of the absorption cavity, and the other end of the liquid inlet pipe is provided with a first step; the spraying frame is provided with a cavity, the side wall of the cavity is provided with a lap joint part, the spraying frame is rotationally arranged on the liquid inlet pipe, the lap joint part rotationally abuts against the first step, the inner wall of the cavity is provided with a spiral face, the liquid inlet pipe communicates with the cavity, and after spraying liquid passes through the liquid inlet pipe, the spiral face is impacted, so that the spraying frame rotates; the nozzles are arranged on the spraying frame and used for spraying out spraying liquid. By means of the technical scheme, the problem that in the prior art, a spraying head only sprays in one direction, and consequently the absorption effect of tail gas generated in O-methyl-N-nitroisourea production is poor is solved.

The invention relates to an energy-saving efficient refrigerating unit and process, and belongs to the technical field of refrigerating equipment. The refrigerating unit comprises a generator, a condenser, an absorber and an evaporator, the condenser is connected with a flow dividing and pressure reducing pipeline, the flow dividing and pressure reducing pipeline divides a liquid refrigerant into two paths and guides the liquid refrigerant into the absorber and the evaporator, and a solution pump is arranged between a rich liquid outlet of the absorber and a rich liquid inlet of the generator. And an ejector is arranged on a pipeline between the barren liquor inlet of the absorber and the barren liquor outlet of the generator. Refrigerant formed in the condenser is divided into two paths and decompressed, one path serves as a cold source of the absorber, replaces circulating water and absorbs heat outside a pipe of the absorber to generate pool type boiling and phase change, the heat transfer efficiency is greatly improved, the refrigeration efficiency can be improved, and the refrigerant serving as liquid refrigerant self-produced by a unit is stable in temperature and low in cost. The device is slightly influenced by high temperature in summer and can be recycled.

The invention relates to a laser wire powder coaxial combined machining head for multiple beams, and belongs to the technical field of laser additive equipment, the laser wire powder coaxial combined machining head comprises a wire feeding assembly and a plurality of coaxial powder feeding nozzles, the plurality of coaxial powder feeding nozzles are arranged around the central axis of a wire in the wire feeding assembly, the coaxial powder feeding nozzles are connected with a lens group module, and the lens group module is connected with an optical fiber plug. The laser passes through the lens group module and is coaxial with the central axis of the coaxial powder feeding nozzles, an annular powder feeding channel is arranged in the coaxial powder feeding nozzles around the central axis of the coaxial powder feeding nozzles, the coaxial powder feeding nozzles are provided with powder feeding holes communicated with the annular powder feeding channel, and the central axis of a wire in the wire feeding assembly and the central axis of each coaxial powder feeding nozzle intersect at the same point. The device has the advantages that when the silk powder is fed at the same time, the silk powder can evenly absorb energy of laser, the problem of different directions is solved, the material utilization rate and the additive quality are improved, meanwhile, equipment adjustment is simplified, and the working efficiency is improved.

The invention relates to the technical field of CCUS, and discloses an offshore sandstone CCUS technology optimization method and system and computer equipment. The offshore sandstone CCUS technology optimization method comprises the steps that an offshore area with a sandstone layer is obtained, an offshore platform is established, and direct air capture equipment is arranged on the offshore platform; a novel amine-containing absorbent is adopted to absorb carbon dioxide in the air which is directly absorbed by the air capturing equipment; the absorption tower adopts a composite material and a coating structure; fluid dynamics simulation software is adopted to calculate air flow and liquid flow in the carbon capture process, simulation data are analyzed, and fluid distribution in the tower and the tower body structure are optimized; conveying the extracted carbon dioxide to a geologic structure under a seabed of a storage place through a pipeline for sealing and storing; and evaluating the potential influence on the marine ecosystem by adopting an ecological model and environment simulation software, and generating an influence report. The carbon dioxide capturing and storing efficiency and safety can be improved, and meanwhile the influence on the environment is minimized.

The invention relates to the technical field of aspartame production, and provides an acid mist absorption device for aspartame production, which comprises a shell and an activated carbon plate, a box body is arranged on one side of the shell, an air inlet is fixedly connected to the other end of the shell, an activated carbon plate is movably mounted at the top end of the interior of the shell, and a filter plate is movably mounted at the bottom end of the activated carbon plate. Through the arrangement of the blades, when air flow enters the shell, the powerful air flow drives the blades to rotate, so that the blades rotate to blow acid mist upwards and rotate and move in the equipment more quickly, the contact area and opportunity of the acid mist and absorption liquid are increased, and when the absorption liquid is pumped into the water spraying pipe, the turbine is driven by water flow to rotate; the dispersing disc rotates to throw out the absorption liquid, so that the dispersing area and irregularity of the absorption liquid are increased, and the absorption liquid is in contact with acid mist to a greater extent, so that the absorption effect of the acid mist absorption device for aspartame production is enhanced, and the purification efficiency and the waste gas treatment effect are improved.

The invention relates to the technical field of breeding, in particular to a breeding harmful waste gas purification device. The technical problem to be solved is to provide the breeding harmful waste gas purification device capable of effectively treating breeding waste gas. Comprising a shell, a through hole is formed in the upper end of the shell, an exhaust port is formed in the through hole in the upper portion of the shell, a mounting circular plate is fixed in the shell, the U-shaped liquid storage barrel is fixedly connected in the shell, a venturi tube is fixedly connected in the U-shaped liquid storage barrel, one end of the venturi tube is fixedly connected and communicated with a rotating barrel, and an impeller is rotationally connected in the rotating barrel. Waste gas is absorbed through the absorption liquid, bubbles are broken through high-speed water flow at the liquid inlet end of the venturi tube, the bubbles are broken and turbulent flow is generated when the driving rods rotate in a staggered mode, absorption of harmful gas in the bubbles is accelerated, the absorption liquid is atomized through the atomization nozzle, the contact area of the absorption liquid and the bubbles is increased, and the waste gas absorption effect of the absorption liquid is improved.

The invention discloses recycled aggregate negative carbon pervious concrete and a preparation method thereof, and relates to the field of pervious concrete. The recycled aggregate negative carbon pervious concrete is prepared from the following components in parts by mass: 1186 to 1423 parts of recycled coarse aggregate, 54 to 68 parts of fine aggregate, 221 to 263 parts of cement, 147 to 175 parts of coal ash, 111 to 132 parts of water, 3.37 to 4.01 parts of a water reducing agent, 263 to 285 parts of special gel and 3.68 to 4.38 parts of bacterial powder. According to the recycled aggregate negative carbon pervious concrete, the surface of the recycled aggregate is wrapped with the specially-made gel, the bacterial powder with the biological enzyme catalysis function is introduced, the hardness of the recycled aggregate is improved, microcracks and pores are sealed, the mechanical property of the pervious concrete is effectively improved, the pervious concrete is endowed with the carbon absorption and fixation performance, and low-carbon environment-friendly production is achieved; the current environmental protection and dual-carbon concepts are met.