92results about How to "Avoid Pollution Hazards" patented technology

The invention discloses washing liquid used in the semiconductor industry to wash plasma etching residues. The washing liquid contains citric acid / citrate buffer solution, fluorides, macromoledular corrosion inhibitor, anti-freeze agent and solvent. The washing liquid can effectively wash the plasma etching residues during the process of manufacturing a semiconductor, have low etching velocity on nonmetals and metal substrates such as Si, SiO2, tetraethoxy silane silicon dioxides (PETEOS), low-medium materials, Ti, Al, Cu and so on, is safe and harmless to the environment and the human body, and has good application prospect in the microelectronic field such as washing of semiconductor wafers and so on.

The invention discloses a method for continuous pyrolysis and gasification of a material. The method comprises the following steps: 1, a raw material and a catalyst enter a microwave pyrolysis and gasification system, fall to a first-stage rotating disc of a microwave reaction chamber, and sequentially undergo drying, activating and pyrolysis treatment with rotating; 2, a pyrolysis treated material falls to a second-stage rotating disc of the microwave reaction chamber, and the pyrolysis treated material and a pyrolysis volatile compound undergo a gasification and reforming reaction under the action of water vapor; and 3, a solid product obtained in step 2 falls to a residue storage tank below the microwave reaction chamber from middle holes of the second-stage rotating disc through a second-stage pushing baffle plate, and is discharged from a reaction system under stirring and screw dual action, and a gas product enters a settlement chamber from an annular sieve plate at the bottom of the microwave reaction chamber, and undergoes settlement treatment to obtain the gasification product. The method has the advantages of fast cracking speed, high gasification efficiency, high quality of the gas product, meeting of liquid fuel synthesis requirements, and good application prospect.

The invention discloses a preparation method for manufacturing building board by utilizing mine tailing residue. The following raw materials are used by weight ratio: 30-75% of tailing residue and 25-70% of additive; brine with the weight percent concentration of 25-28% is utilized to stir the material into paste, the paste is placed into a mould to be rolled and moulded, and the tailing residue is one or more than one of gold slag, copper slag and ferrum slag. The invention utilizes tailing residue to produce building board, massive tailing residue is consumed, pollution harm of tailing discharge is solved, the produced building board has low cost and high strength, tailing residue can be made into various building boards by utilizing the technology, and various building section bars, stone pillar, brick and lattice prism used for historic building restoration as well as modern city sculpture, roman column pendant, external decorative wall, leisure chair, rail and sidewalk lattice brick can be cast.

The invention discloses plant oil-modified self-emulsifying ester. The plant oil-modified self-emulsifying ester is prepared from plant oil, vinyl diacid and fatty alcohol ether. The invention also discloses a preparation method of the plant oil-modified self-emulsifying ester. The preparation method comprises Diels-Alder reaction: adding plant oil, vinyl diacid (acid anhydride) and a certain amount of a catalyst into a reactor, and heating the materials to a certain temperature for double bond rearrangement and Diels-Alder reaction lasting for some time to obtain reacted plant oil, and esterification reaction: mixing the obtained reacted plant oil and fatty alcohol ether, adding a catalyst into the mixture, and heating the mixture to a certain temperature for some time to obtain a self-emulsifying ester finished product. The plant-based modified product is renewable, is biodegradable easily and prevents environmental pollution. The product has good lubrication performances and self-emulsifying characteristics, can be easily emulsified in water, can be used as an emulsifier for replacing other types of emulsifiers, an oil-based lubricant, an antirust agent and mineral oil or reducing their use in a water-based metal processing liquid.

The invention discloses a process for processing and recycling leaded wastewater. The process comprises a primary processing part and a deep processing part. The primary processing part is achieved through the chemical neutralization and sedimentation and the primary tubular membrane filtration. The deep processing part is achieved through the ultrafiltration and the secondary reverse osmosis concentration desalination, thick water processed through secondary reverse osmosis is filtered through the secondary tubular membrane filtration, and discharged clean water which is processed through the primary reverse osmosis, the secondary reverse osmosis and the secondary tubular membrane filtration is recycled. Tubular membrane filters are arranged at the water outlet end of a primary processing neutralizing tank and for thick water processing of a deep processing secondary reverse osmosis system, therefore, the occupied area is greatly narrowed, and the device is more compact and simple. The tubular membrane filters can intercept all particles with the diameter greater than 0.1 micrometer, therefore, small lead hydroxide flocs caused by the dosage deviation of a flocculating agent and flocs with the low settling velocity can be intercepted, the quality and the stability of the discharged water can be fully ensured, and the pollution hazards can be avoided.

The invention discloses a method for producing a biological fermentation compound fertilizer by fermenting organic waste water with glutamic acid, which mainly comprises the following steps: carrying out multiple-effect evaporation concentration on waste liquor fermented by glutamic acid, extracting mycoprotein, carrying out multiple-effect concentration, carrying out low-temperature spraying fluidized granulation (adding inorganic constituents), screening, and cooling to obtain the finished biological fermentation compound fertilizer product. The method can overcome the defect that organic substance constituents can be coked and decomposed at high temperature, causing secondary pollution on the atmosphere and soil pollution caused by carbides in the spouting granulation technique, and develops a creative way for realizing zero discharge of organic waste water.

The invention relates to a method for recovering and utilizing waste metal sludge. It is characterized in that the waste metal sludge can be recycled as renewable resources, which causes no pollution and avoids the harm for water resource and human environment brought from industrial solid waste deep bury. The method comprises adding hydrogen peroxide and potassium permanganate into waste metal sludge for oxidation, which combines with autoxidation to form metal powder that is suitable for extraction.

The invention discloses a passivating method for reducing bioavailability of cadmium in acidic cadmium polluted soil. The passivant adopted by the method is industrial waste which is obtained by recycling pulp alkaline liquor with hydrated lime in the paper mill. The industrial waste generally contains 0.8g / kg-3.0g / kg of effective silicon, 0.6g / kg-2.0g / kg of effective iron and 100.0mg / kg-400.0mg / kg of effective phosphorus. The passivating method of the invention has the advantages of resource conservation, environmental friend, low cost, simple operation and the like, and can effectively control the soil heavy metal pollution and reduce the bioavailability of cadmium in acidic cadmium polluted soil.

The invention discloses a paper pulp molding edge trimmer, which comprises a bed body and a transverse moving mechanism, a longitudinal moving mechanism, a lower die holder, a pressing down mechanism and an upper die holder which are arranged on the bed body; the lower die holder and the upper die holder are matched; when being combined, the lower die holder and the upper die holder form a containing cavity together for containing a paper pulp box to be edge-trimmed; the lower die holder is fixed on the longitudinal moving mechanism and can drive the same to longitudinally move; the longitudinal moving mechanism is arranged on the transverse moving mechanism and can drive the longitudinal moving mechanism and the upper die holder to transversely move; the lower die holder is fixed on the pressing down mechanism and can drive the lower die holder to move up and down. By adopting a mechanism drive manner, the pollution hidden danger existing in hydraulic drive is fundamentally avoided; the paper pulp molding edge trimmer is simple in structure, convenient to operate, thus ensuring the edge-trimming precision and stability of the paper pulp molding edge trimmer; the production cost is reduced while the production efficiency is improved.

The invention relates to a pure-natural pollution-free dry-mixed floor mortar, which is prepared from the following raw materials in parts by weight: 200 to 250 parts of cement, 710 to 750 parts of yellow sand, 40 to 70 parts of pulverized fuel ash, 0.5 to 2 parts of additive, and 20 to 30 parts of natural thickening agent, wherein the additive is hydroxypropyl methyl cellulose; the natural thickening agent is a mixture prepared from the raw materials in parts by weight: 20 to 30 parts of glutinous rice flour, 15 to 35 parts of egg white powder, 25 to 30 parts of clay soil powder and 15 to 30 parts of straw meal. The pure-natural pollution-free dry-mixed floor mortar has the advantages that the natural thickening agent is adopted, so that on one hand, the overall viscosity of the mortar added with water can be improved, and a series of problems of shrinkage crack, water seepage, sand strip, peeling deformation, low strength level and the like of a surface layer of a floor at the later stage are prevented; on the other hand, the mortar is pollution-free to a human body, and the problem that straw stalks cannot be utilized can be effectively solved; the materials can be effectively smashed through a rotary cutter disc, and a filter effect of a filter box is effectively improved through horizontally swinging the filter box in a reciprocating way.

The invention discloses regenerated catalytic powder prepared from an abandoned vanadium-based SCR (selective catalytic reduction) catalyst and a preparation method of the regenerated catalytic powder. The method comprises the following steps: first, adding alkaline liquor into an ash-removed and pulverized abandoned vanadium-based SCR catalyst, agitating an obtained mixture I, carrying out a reaction on the agitated mixture I, filtering and water-scrubbing a reaction product, afterwards, washing a filter cake to be neutral with acid liquor to obtain TiO2, next, adding a vanadium salt and a tungsten salt into the TiO2, uniformly mixing an obtained mixture II, and then roasting and ball-milling the obtained mixture II to obtain the regenerated catalytic powder of which the particle sizes D50 are equal to 1-20 microns; the powder contains the following components: 0.1-5%wt of V205, 80-98%wt of the TiO2 and 1-10%wt of WO3. The method provided by the invention removes agglomerated and inactivated vanadium and tungsten substances from the abandoned vanadium-based SCR catalyst through cleaning, then adds some active substances into the abandoned vanadium-based SCR catalyst again, carries out roasting and ball-milling, and not only solves the sintering agglomeration of active components, enables that the newly added active substances can be favorably dispersed, but also solves the problem that a catalyst cannot be regenerated due to the reduction of mechanical strength or fragmentation; further, the preparation method is succinct in process, easy to control in conditions, and suitable for large-lot production.

The invention relates to the technical fields of steel smelting and ladle metallurgy, particularly a fluorine-free sodium-free ladle covering agent. The invention aims to provide a fluorine-free sodium-free ladle covering agent which has the characteristics of strong basicity, strong reducibility, high absorption and inclusion capacity, favorable spreadability and excellent heat-insulating property; and the invention also aims to solve the problems of high melting point, low melting speed, low desulphurization capacity and poor use effect in the existing CaO ladle covering agent, and to overcome the defect of contamination hazard since the covering agent contains sodium oxide, calcium fluoride and the like. The invention is characterized in that the covering agent is prepared from the following components in percentage by weight: 40-80% of spodumene, 10-40% of lime, 2-15% of magnesite and 1-10% of carbon black.

The invention is a dry-hanging structure and a construction method for a building ceramic large plank curtain wall. The dry-hanging structure comprises a framework structure formed by a keel and a cross beam; the framework structure is installed on a wall via connection assemblies; three rows of holes are drilled by a specific back bolt machine on the back of the building ceramic large plank; each row has five hole positions and screwing back bolts are planted therein; hanging members are installed on reinforcing grooves; the reinforcing grooves are tightly installed on the building ceramic large plank by the back bolts; and the building ceramic large plank can be hung on corner connectors of the cross beam via the hanging members, so the building ceramic large plank can be installed. With the above structure and method, great anti-bending strength, stability and anti-vibration performance can be achieved; the dry-hanging structure is especially suitable for super-high building structures or structures having seismic requirements; stronger weather resistance is provided; a full-machinery mode lock is provided and base material interior can be deeply accessed; organic glueing material of various types can be unnecessary; and material aging and potential chemical material pollution can be effectively avoided; and long-lasting combination can be obtained.

The invention discloses a heavy metal contaminated soil humic acid green in-situ curing repair technology. The technology comprises the steps that 1, when heavy metal contaminated soil is smashed, humic acid is added for in-situ reduction and curing, wherein the ratio of the humic acid to heavy metal is 5-30:1, and humic acid promotes soil granulated wrapping to prevent exudation and migration ofheavy metal in granules; and 2, after 24h of aging, 1%-3% of semi-cock bacterial manure is added into the reduced heavy metal contaminated soil to be mixed evenly, permanent reduction and fixing are achieved, and a soil planting function is achieved.

The invention discloses a preparation method of a fluorescent brightener water solution for a detergent. The preparation method comprises the steps that (1) process water and a detergent surfactant are sequentially added into a stirring kettle according to the weight, and stirring is started; and (2) when the surfactant is completely dissolved, a powdery fluorescent brightener is added into the stirring kettle, and stirring is continued until the solution is homogenous and transparent. According to the invention, the homogenous and transparent water solution is prepared with the solubilization effect of the surfactant to the fluorescent brightener. During a production process, the brightener solution for one day use can be prepared once and can be stored in a high-level storage tank. An addition amount can be controlled through a meter, such that production operation is convenient, production efficiency is improved, and product quality is stabilized.

The invention relates to an integrated utilization method of banana stalk, wherein banana stalks are crushed up or slurried to separate fibers and the hybrid cells therein; the hybrid cells are transferred into an anaerobic fermentation system for biogas fermentation so as to obtain biogas and anaerobic effluent; fibers are used as raw material for paper-making or textile. Anaerobic effluent could be reused in preview process, and it could be used as the liquid fertilizer after handling as well. An integrated utilization method of the banana stalk provided by the invention realizes a high-value utilization of the banana stalk through the classified utilization of banana stalk, which avoids the serious banana epidemic situation brought by banana stalk when being stacked naturally or returned to field directly, therefore, significant benefits of environment and economy can be obtained.

The invention relates to the water treatment field, particularly aims at solving the problems of a household antiosmosis pure water machine as follows: 1. only little drinking water can be produced and pure water can not be produced, tap water suffering double pollution and containing surplus chlorine is used for washing vegetables and cooking; 2. the produced pure water removes the mineral clearly, drinking the pure water for a long time is harmful to health: and 3. 3-5 cups of condensed water are discharged when producing 1 cup of pure water, thus causing serious waste of the tap water and disadvantages. The purpose related by the invention is achieved by replacing the pretreatment system of the antiosmosis pure water machine with a water purifier which can produce qualified pure water; and the core thereof is replacing a PP cotton fine filtration unit with a micro-filtration unit which can be recoiled in use.

The invention belongs to the technical field of edible fungus cultivation and particularly relates to an efficient disease-preventing auricularia polytricha culture medium and a preparation method thereof. The culture medium comprises, by weight parts, 20-30 parts of broken wood shavings, 10-20 parts of trichoderma anti-mildew agent, 8-20 parts of soy sauce waste residue, 8-15 parts of hull of water chestnut, 8-15 parts of lotus seed hulls, 5-15 parts of banana stem, 1-10 parts of ambrosia trifida, 1-5 parts of rape flower straw and 1-5 parts of cottonseed hull and the like. The method comprises a step (1) of raw material processing, a step (2) of fermentation treatment, a step (3) of charging processing and a step (4) of sterilization processing. The formula design of the culture medium is more suitable for growth of auricularia polytricha, so that auricularia polytricha is bright red compared with fresh agaric, and the quality of the whole auricularia polytricha is improved. Part of raw materials of the culture medium are agricultural and industrial waste, the cost is low, so that the production cost is reduced, a novel handling way is provided for handling the agricultural and industrial waste, and the culture medium is economical and environmentally friendly. The preparation process is simple and easy to popularize.

The invention discloses an intraperitoneal hyperthermic perfusion chemotherapy instrument in operation, belonging to the technical field of medical instruments. The intraperitoneal hyperthermic perfusion chemotherapy instrument in operation comprises a heating device, a control device, a man-machine interaction device, a chemotherapy liquid collection bag, two adjustable speed peristaltic pumps, two T-junction dividers and a plurality of sensors, wherein the heating device comprises a heating plate and a heating bag, the heating plate and the heating bag are tightly stuck, the heating plate is connected with the control device to transfer heating temperature control information, and the inlet and the outlet of the heating bag are respectively provided with a temperature sensor. The invention has simple structure and convenient operation; the heating plate is utilized to carry out heat exchange so as to evenly heat, and the chemotherapy liquid is only sealed and circulated in the pipeline, which is clean and reliable; and the chemotherapy liquid collection bag can effectively collect and manage the chemotherapy liquid, and a DSP processor has precise temperature control and obvious curative effect.

The invention discloses a continuous material pyrolysis gasification device which comprises a spiral feeder, a microwave reaction cavity, a microwave generator, a first-stage rotating disc, a second-stage rotating disc, a hollow rotating shaft, a screening plate, a settling chamber, a residue storage tank and a spiral residue discharge device, wherein the spiral feeder is positioned at the upper part of the microwave reaction cavity; the microwave generator is arranged outside the microwave reaction cavity; the first-stage rotating disc and the second-stage rotating disc are arranged inside the microwave reaction cavity; the two stages of rotating discs are fixed through the hollow rotating shaft; the bottom of the microwave reaction cavity takes the shape of a ring and consists of a screening plate which tilts downwards; the settling chamber is connected below the screening plate; a gas product outlet is formed in the settling chamber; a non-screening plate part at the bottom of the microwave reaction cavity communicates with the residue storage tank below; and the residue storage tank is internally provided with a stirrer and communicates with the spiral residue discharge device. The continuous material pyrolysis gasification device is high in pyrolysis speed, high in gasification efficiency, high in gas product quality, capable of meeting requirements of synthesizing liquid fuel, and good in application prospect.

The invention discloses polypropylene crosslinking copolymer fiber concrete leaking stoppage paste which comprises earlier-stage leaking stoppage paste and later-stage leaking stoppage paste. The earlier-stage leaking stoppage paste is composed of the following components of, by weight, 3 to 5 parts of a composite filling agent, 4 to 5 parts of a composite reinforcement agent, 2.5 to 3 parts of sodium polyacrylate crosslinking copolymer particles, 5 to 6 parts of flax fibers, 0.5 to 1 part of saw powder and 80 to 85 parts of water. The later-stage leaking stoppage paste is composed of the following components of, by weight, 20 to 30 parts of silicate cement, 5 to 10 parts of sodium polyacrylate crosslinking copolymer particles, 5 to 15 parts of flax fibers, 15 to 20 parts of medium sand and 5 to 10 parts of water. According to the leaking stoppage paste, a bridge connection leaking stoppage method and a chemical leaking stoppage method are combined, leaking stoppage risks are reduced, the leaking stoppage effect is improved, and meanwhile cost is low.

The invention discloses a straw fiberboard. The straw fiberboard comprises, by weight, 50 to 60 parts of polyethylene resin powder, 30 to 35 parts of polyvinyl chloride resin powder, 20 to 22 parts ofstraw powder, 5 to 10 parts of calcium powder, 7 to 11 parts of ACR, 4 to 6 parts of a calcium zinc composite stabilizing agent, 0.5 to 0.6 part of polyethylene wax, 1 to 1.5 parts of stearic acid, 2to 3 parts of paraffin, 5 to 7 parts of magnesium oxide, 3 to 5 parts of magnesium chloride, and 16 to 20 parts of urea-formaldehyde resin. According to a preparation method, straw waste is taken asa raw material, and better combination with resin plastic is achieved without modification, so that full utilization of straw is realized, and the strength of conventional bamboo fiberboards is achieved. Straw powder high efficiency recycling is realized, and pollution on the environment by the conventional processing method of crop straw is avoided.

The invention discloses a modified biochar preparation method and the modified biochar. The modified biochar preparation method comprises the steps: sequentially carrying out air drying, drying, pyrolysis and crushing on biomass to obtain biochar; preparing a humic acid solution; putting the biochar and the humic acid solution into a flask, oscillating the flask to enable the biochar to load humicacid, and filtering out the solution after oscillation is finished to obtain a biochar and humic acid compound; carrying out a desorption experiment on the charcoal humic acid compound to obtain thecharcoal humic acid compound with stable load, wherein the modified biochar is a biochar humic acid compound prepared according to the preparation method of the modified biochar. According to the preparation method of the modified biochar provided by the invention, a strong oxidant or a metal oxide is not used for modification, so that the hidden danger of environmental pollution caused by chemical product modification is avoided.

The invention relates to a method and a device for making a plant fiber product with paper pulp by means of molding. According to the technical scheme, a method for moving a mold of a plant fiber molding machine up and down comprises the following steps: 1) while a plant fiber molding product is manufactured, fixing a vertical moving mold which can make up and down straight line movement at one end of a sliding column, or fixing the vertical moving mold at one end of the sliding column through a mold mounting plate, and driving the vertical moving mold to make up and down straight line movement through the sliding column which is positioned on an upper rack and is capable of sliding vertically up and down relative to the upper rack; and 2) connecting the sliding column with a weight balance block through a weight balance connecting line or a chain mounted on a fixed pulley in a span manner, rotationally positioning the fixed pulley or a sprocket on the upper rack, and tracking the weight balance block of the sliding column through the weight balance connecting line or the chain. The method and the device are high in guiding precision, short in forming cycle, stable in operation, high in output, and capable of eliminating hydraulic oil pollution of wet blanks.

The invention discloses an overall solution for environmental improvement, and aims to solve the problems that existing measures for environmental improvement and supervision are not implemented thoroughly, pollution sources and pollution manufacturers cannot be found quickly and accurately for some existing behaviors polluting the environment, some bad enterprises and individuals discharge pollutants stealthily, and serious environmental pollution problem is caused accordingly. A monitoring and commanding integrated platform is established to be matched with various environmental data in an all-weather monitoring area of a positioning satellite and an aerial photography satellite, a satellite, skynet monitoring, monitoring equipment and a supervisor are utilized to construct a sky-land-human three-in-one monitoring and management system, and the system serves for supervision and implementation of overall environmental improvement measures. Precise and rapid capture of pollution sources and pollution manufacturers is achieved, measures are taken in time, and further pollution hazards to the environment are prevented.

The invention provides a closed type ozone charging transfusion device and a transfusion method. The transfusion device comprises a check valve (1) and a blood taking bag (4), wherein the check valve (1) comprises a valve body (101), a compression spring (102) installed in an inner cavity of the valve body (101), a valve ball (103) and a bacterial filtering membrane (104), the bacterial filtering membrane (104) is fixedly connected to the inlet end of the valve body (101) and covers an inlet of the inner cavity of the valve body (101), the inlet of the inner cavity of the valve body (101) is sealed by the valve ball (103) through elastic force of the compression spring (102), and the outlet end of the valve body (101) is connected and communicated with a pipeline of the blood taking bag (4).When ozone is charged, firstly, the outlet end of an injector which contains the ozone and is not provided with a needle is in sealing connection with the inlet end of the check valve, and then the ozone passes through the bacterial filtering membrane to be charged into the inner cavity of the blood taking bag through the injector. By utilizing the closed type ozone charging transfusion device, the ozone can be charged in a fully closed environment, hidden pollution danger is effectively avoided, and the closed type ozone charging transfusion device has the obvious advantages of simplicity and convenience in operation, high safety and the like.

The invention discloses a glass box liquid crystal filling opening sealing mechanism of a full-automatic leveling sealing machine for liquid crystal glass boxes and solves the technical problems thatthe rejection rate is high during wiping, dispensing and curing of a long-strip-shaped liquid crystal filling opening with existing liquid crystal glass box leveling and sealing equipment. The full-automatic leveling sealing machine for the liquid crystal glass boxes comprises a leveling seat box mechanism and the glass box liquid crystal filling opening sealing mechanism. When glass boxes are stacked in a leveling seat box, the leveling seat box is controlled to rotate to drive a servo and speed reducer (13), the leveling seat box is rotated by 45 degrees and is located in a tilt state, and the stacked glass boxes can be stacked orderly by a seat box front side positioning baffle (14). Wiping of overflowed liquid crystals (29) can be completed in a high-quality and proper strength mannerwithout deforming the glass boxes by controlling a wiping mechanism lateral movement servo motor (32) and a wiping head vertical movement servo motor (35). The mechanism operates stably and occupies small space, the dispensing and sealing accuracy is effectively improved and the potential risk of pollution of the liquid crystals is avoided.

The invention relates to a protective clamp for the local metal plating of workpieces and a cyanide-free gold plating method thereof. The protective clamp for the local metal plating of workpieces comprises an upper cover and a lower cover holding a workpiece therebetween, and a locking mechanism firmly combining the upper cover and the lower cover; the upper cover comprises an upper cover body on which an opening is disposed corresponding to the local part of the workpiece to be plated; a primary sealing ring fitted with the periphery of the opening is disposed on the inner side of the upper cover body to isolate the local part of the workpiece to be plated from the local part without needing to be plated. According to the invention, the local part of the workpiece to be plated is isolated from the local part without needing to be plated, so the leakage of the plating solution is absolutely prevented and the accuracy of the periphery is greatly increased. Furthermore, no chemical substance is required; no contamination is caused to the surface of the workpiece; no recovery processing is required for chemical substances; so the protective clamp has the advantages of environmental protection and high efficiency. In addition, partial surface of the metal is subjected to gold-plating treatment with cyanide-free plating solution, wherein the solution is nontoxic and the treatment process is safe.

The invention discloses a liquid lead-bismuth environment static soaking test device and test method. The device comprises a frame, a test kettle, a lifting device and a corrugated pipe, wherein the kettle opening of the test kettle is upward, the upper end of the corrugated pipe is connected with the frame, and the lower end of the corrugated pipe is in butt joint with the kettle opening; the output end of the lifting device is connected with the test kettle, the lifting device is used for driving the test kettle to do ascending and descending movement so as to change the height of the test kettle in the space, and when the test kettle does ascending and descending movement, the corrugated pipe is compressed or stretched along with the movement of the test kettle. The method is based on the device. With application of the device and the method, static soaking in the liquid lead-bismuth environment can be completed, and the device and the method have the characteristics of convenienceand safety in operation.

The invention belongs to the technical field of biological medicines. The invention discloses a live vaccine for preventing viral infectious diseases. The live vaccine contains live viruses, the liveviruses in the live vaccine are combined with monoclonal antibodies, and the pathogenicity of the live viruses in the live vaccine is inhibited by means of the neutralizing effect of the monoclonal antibodies. Along with the rapid development of a monoclonal antibody technology, the live vaccine is prepared on the basis of an immune complex formed by a live virus and a neutralizing monoclonal antibody. The vaccine has the advantages of being rapid in vaccine seed virus preparation, high in safety, good in immune protection effect, suitable for preventing various viral infectious diseases, freeof preparing a large amount of human or animal serum containing neutralizing antibodies and the like, and the virulence of vaccine viruses is not worried to be enhanced.