142results about How to "Achieve dissolution" patented technology

The invention relates to a process by adopting supercritical water oxidation technology to treat coking wastewater or organic wastewater. The invention is that: coking wastewater or organic wastewater is pretreated to obtain wastewater without solid granules; the wastewater is heated to 380-450 DEG C with a first interchanger and / or a supercritical boiler, and then enters demineralizing equipment to remove the salt in the wastewater by taking advantage of the property that supercritical inorganic matter is indissoluble; the wastewater after desalting is put in a reaction kettle to generate autothermal reaction with an heated and pressurized oxidant to obtain high-temperature gas-liquid mixture with higher temperature; the high-temperature gas-liquid mixture enters the first interchanger and acts as thermal medium to exchange heat with new coming coking wastewater or organic wastewater and then goes through a secondary interchanger to enter a cooler and is cooled to normal temperature, after pressure thereof is adjusted by a pressure regulation device, the high-temperature gas-liquid mixture enters a gas-liquid separator for separation, and then the air is discharged, while the liquid, namely the treated water is recycled. The organic contamination and oxidant are all dissolved in the wastewater; oxidation reaction is generated in homogeneous phase, in short reaction time, oxygenolysis of organic contamination is carried out quickly.

The invention discloses a fused salt heat treatment method for rubbish incineration fly ash, and belongs to ash treatment methods. The method solves the problems that the treatment temperature is high, the energy consumption is large and poisonous trace elements cause secondary pollution through existing treatment methods for the rubbish incineration fly ash. The method includes the steps of preparing mixed fused salt, carrying out fusing heat treatment, detecting the content of heavy metal and extracting and recovering the heavy metal. According to the method, chlorides, sulfate and partial heavy metal in the fly ash can be dissolved out through the fusing, heat storing and reacting characteristics of the fused salt, processes are relatively simple, reaction conditions are mild and easy to control, leaching of the heavy metal in the fly ash can be effectively controlled in an environment, the treated fused salt can be recycled, deep enrichment and recovery of the dissolved heavy metal can be carried out, the harm level of treated residues is greatly lowered, building material utilization and secure landfill of the treated residues can be conveniently carried out, secondary pollution is effectively reduced, the resource utilization efficiency is improved, and light reduction, harmlessness and resource utilization of the rubbish incineration fly ash can be realized synchronously.

The invention discloses a flow-rate-adjustable electrolytic tank reaction device for electrically reducing carbon dioxide. The electrolytic tank reaction device comprises two end plates (1), an aeration liquid storage chamber (2), an anode chamber (3) and a cathode chamber (4), wherein the cathode chamber (4) is provided with an S-shaped flow channel; an ion exchange membrane (15) is spaced between the anode chamber (3) and the cathode chamber (4); two electrodes are located at two sides of the cathode chamber (4) respectively; a feeding and discharging opening is formed in the side of the cathode chamber (4); a solution is fed from the bottom and is discharged from the top; circulation of the solution in the cathode chamber is realized by a peristaltic pump (16); an aeration head is arranged at the bottom of the aeration liquid storage chamber (2); meanwhile, the circulation of a cathode solution is completed at the top of the aeration liquid storage chamber while products can be collected. The device is simple in structure and stable in performance, and is capable of carrying out real-time sampling analysis on gaseous products and liquid products, stably realizing circulation of the cathode solution and accurately controlling the flow rate of the liquid flowing through the surface of a catalyst so as to improve the selectivity of reduced products obtained by electrically reducing carbon dioxide.

The invention discloses cellulose / polyaniline nano-porous composite microspheres. The microspheres take a cellulose solution as a dispersion phase, regenerated cellulose microspheres are prepared with an emulsion method, then under the bridge action that hydrogen bonds can be formed by the phytic acid and cellulose and by the phytic acid and polyaniline respectively, the polyaniline is polymerized in situ on the regenerated cellulose microspheres, and the cellulose / polyaniline composite microspheres are obtained. When the microspheres are used for constructing an electrode material, charging and discharging velocities and stability of the electrode material are obviously improved. Thus, the composite microspheres have the potential application prospect in the aspect of electrochemical devices.

The invention discloses a two-step organic waste treatment system and method based on supercritical / subcritical water technology. The two-step organic waste treatment system comprises a subcritical hydrolysis reactor, a supercritical water gasification reactor, a material conveying apparatus communicated with the bottom of the subcritical water gasification reactor, an oxidizing agent apparatus, a residue discharging apparatus, a material heat exchanger, a backheating apparatus and a product collection apparatus. Organic waste is hydrolyzed into micromolecular products through a subcritical hydrolysis reaction, so requirements on subsequent gasification reaction conditions are lowered, and harmless treatment of organic waste is realized; organic waste is completely converted into clean energy like H2 by supercritical water gasification, so the goal for sustainable efficient recycling of organic waste is achieved; an oxidizing agent is added in the reaction process of supercritical water, so an in-situ heat source is provided for gasification, a gasification rate is increased and energy consumption is reduced; and through directional adjustment and control of technological parameters of subcritical hydrolysis and supercritical water gasification, cooperative effect of the two-step method can be realized, and the gasification conversion rate of organic waste is greatly improved.

The invention provides a method for preparing soluble silicate with high modulus by gasified slag. The method comprises the following steps of (1) leaching the gasified slag by acid, and separating solid and liquid, so as to obtain the activated gasified slag and liquid phase; (2) performing desilicication reaction on the activated gasified slag and an alkaline solution of which the concentrationof hydroxyl ions is 1 to 5 mol / L at the temperature of 85 to 105 DEG C, and separating solid and liquid, so as to obtain the desilicication liquid and solid phase; (3) post-treating the desilicicationliquid, so as to obtain the soluble silicate with high modulus. Compared with the prior art, the method has the advantages that any silicon source does not need to be added, the sources of the raw materials are broad, the reaction conditions are mild, the process is simple, and the operation is easy; the quality of the prepared silicate is higher, the modulus is 1.5 to 2.5, the production cost islower, and the secondary solid and liquid pollutants are not produced; the reduction and recycling type efficient utilization of the gasified slag can be realized, and the economic benefit and environment benefit are obvious.

The invention discloses a method applied to acid-base combined extraction of aluminum, potassium and sodium from water-insoluble potassium ore resource such as nepheline, potassium feldspar and the like. The method comprises the following steps: uniformly mixing finely-ground water-insoluble potassium ore with a proper amount of concentrated sulfuric acid, curing, and carrying out rapid high-temperature reduction roasting desulfurization at a certain temperature by a reducing agent, wherein the sulfur-containing flue gas is used for acid preparation to achieve regeneration and cyclic utilization of sulfuric acid; extracting potassium and sodium by water from the reduced calcine, and preparing aluminum oxide by alkaline leaching. By virtue of the method, the decomposition of aluminosilicate-containing material phase in the water-insoluble potassium ore resource such as nepheline, potassium feldspar and the like is enhanced by high-temperature reaction of concentrated sulfuric acid; the cyclic utilization of sulfuric acid is realized. The method can be used for comprehensively recycling aluminum, potassium and sodium resources; the recycling rate of aluminum oxide is high; the energy consumption is low; the corrosion to equipment is small; the large-scale industrialization is easy to implement.

The invention relates to the field of dairy processing, in particular to a liquid dairy product containing banana and coconut and a preparation method thereof. The liquid dairy product comprises the following components in parts by weight based on 100 parts of liquid milk products: 30 to 90 parts of liquid milk, 0.1 to 2.0 parts of stabilizer, 1 to 40 parts of banana protoplasm and 1 to 30 parts of coconut milk, wherein the stabilizer contains thickener gallen gum and sodium alga acid in the weight ratio of 1:0.6-1. The liquid dairy product has more reasonable and more balanced nutrition with sterile addition of natural bananas and coconuts, can better preserve nutrient substances, enriches varieties of the product, remarkably improves the flavor and taste of the product, realizes the stability of the product in long shelf life, and can prevent the phenomena of fat separation, precipitate and flocculation in 6 months of the shelf life.

The invention discloses a beer production method, belonging to the beer production field. The invention particularly relates to a production method of healthy beer. The production method comprises the steps of wort boiling, primary fermentation and secondary fermentation. The method is characterized by adding hot water extracts of hops, honeysuckle and roses at the stage of wort boiling and adding ethanol extraction liquid of sweet osmanthus and chrysanthemum into secondary fermentation liquid of beer. The obtained beer has good nutritional value and health care effects.

The invention discloses a technique of making dissolving pulp by ethanol, sulfate and acetic acid. The manufacturing technique sequentially comprises cropping, screening and removing ashes, washing, ethanol extraction, sulfate cooking, pulp separation, scrubbing purification, chlorination treatment, alkali treatment, acetic acid bleaching +H2O2 oxidation organic bleaching, acid complex treatment and runnability. The invention effectively shortens production process, enhances production efficiency of producing dissolving pulp by using bamboo, wood, a masson pine, a ramulus mori and a Chinese alpine rush; the dissolving pulp can be used in the field of textile dissolving pulp, nitration dissolving pulp, acetic acid dissolving pulp and cellulose dissolving pulp, at the same time the invention enhances harvesting rate of making dissolving pulp by the bamboo, the wood, the masson pine, the ramulus mori and the Chinese alpine rush.

The invention relates to the fields of macromolecular substances, physical chemistry, molecular biology and virology, in particular to solution of chitosan, preparation method thereof and a method for using the same to improve the efficiency of gene transduction mediated by an adenoviral vector.

The invention discloses a dissolving device for the production of new chemical engineering materials. The device comprises a supporting arm, a base, a dissolving tank mounting seat, a dissolving tankand a stirring assembly, a working motor is fixedly mounted at the left side of the supporting arm, the lower part of the supporting arm is fixedly connected to the base through a bolt, the dissolvingtank mounting seat is fixedly mounted at the left side of the upper surface of the base, the dissolving box mounting seat is rotatably connected with the dissolving box, the upper edge of the dissolving tank is in clamping connection with a cover plate, a feed inlet is arranged at the left side of the upper surface of the cover plate, the feed inlet is communicated with the inner chamber of the dissolution tank, and the stirring assembly is mounted in the dissolving tank, and a second filter screen is arranged above the stirring assembly. The device has the advantages of fast dissolving speedand sufficiency in discretion, so the device can dissolve a raw material within a short time, can avoid wastes during filtration of the raw material, and also can avoid the accumulation of the raw material at the bottom of the dissolving tank.

The invention discloses a production process for preparing a compound fertilizer through a urea sulfate ammoniation method. The production process includes the steps of urea sulfate solution preparation, material preparation, granulation, drying, crushing, sieving, cooling, coating, packing and other steps. The production process has the advantages that urea can be dissolved without steam, side reactions generating biuret are reduced, the granulation granule-forming rate is high, drying energy consumption is low, the process adaptability is strong, and the product quality is good.

The present invention discloses a cup support and a dispensing device that uses a cup support. The cup support is adapted to hold at least cups of two different diameters and sizes. The cup support and the dispensing device are adapted to detect the diameter and size of the cup, and enable that when a diluent jet is injected into the cup, the jet is oriented to impact onto a predetermined position on a sidewall of the cup. The orientation of the jet achieves an effective dissolution of food ingredient in the cup by the injected diluent. The dispensing device is designed to move the cup support in a horizontal and vertical direction, to rotate the cup support. The cup support is not directly actuated, but is fitted into movable and rotatable holding means, from which it can be easily dismantled to be cleaned. The cup support comprises a plug element comprising one protrusion. The dispensing device comprises a motor for vertically moving the cup support or the injection means.

The invented method includes the following steps: uniformly mixing PPTA and concentrated sulfuric acid whose concentration is greater than 99% in mixing cylinder, preparing mixed solution in which PPTA content is 14%-24%; making the prepared PPTA mixed solution pass through twin screw extruder, further dissolving to form liquid crystal spinning solution, defoaming, fully mixing and regulating temperature, applying high shear stress to the defoamed PPTA spinning slurry in extruder machine head, filtering and metering, adopting dry-jet wet-spinning process to obtain the invented PPTA fibre.

The invention discloses a preparation method of hard alloy with orientational distribution of featured crystal surfaces of WC crystal grains and belongs to the technical field of hard-alloy metallurgy. The preparation method comprises the following steps of: by adopting a mixture of tungsten oxide, cobalt oxide and carbon material as a raw material, carrying out mixed ball grinding; carrying out cold pressing on ball-ground mixed powder to form a blank, and putting the blank in a vacuum reaction furnace to carry out in-situ reduction and carbonization reaction to obtain WC-Co composite powder containing carbon-deficient phase components under lower temperature; and finally, putting the prepared composite powder in a sintering system which can apply sintering pressure to carry out in-situ reaction sintering densification on the powder to obtain the hard-alloy block material with orientational distribution of the featured crystal surfaces of the WC crystal grains. The preparation method has the advantages of simple process step, short preparation period and low sintering temperature and the like in the aspects of preparing the composite powder and sintering the hard-alloy block material; and the hard-alloy block prepared by sintering has controllable size of the WC crystal grains, obvious anisotropy of structures and mechanical properties and strong repeatability.

The invention provides a crystallization method integrating anti-solvent crystallization, vacuum evaporation and cooling or anti-solvent crystallization. The method comprises the following steps: (1) preliminary anti-solvent crystallization: placing a to-be-crystallized amino acid material into a crystallizer, adding solvent water and allowing the material to be fully dissolved, carrying out heating to 30 to 80 DEG C, adding an anti-solvent into the crystallizer, carrying out full stirring, and allowing a part of the solute in the solution to be crystallized and separated out so as to obtain a to-be-crystallized material; (2) vacuum evaporation and cooling or anti-solvent crystallization: continuing stirring, subjecting an obtained solid-liquid system to evaporation under an absolute pressure of 20 to 60 kPa, cooling the obtained solid-liquid system or adding the same anti-solvent as in the step 1 so as to promote crystals to continue to grow, and repeating the step 2 for 1 to 3 times; and (3), filtering and drying: carrying out filtering, washing and drying so as to prepare a crystallization product. The method provided by the invention has the advantages of convenient and fast operation, high yield and easy realization of industrial scale production, and can obtain the crystallization product with narrow particle-size distribution and a large particle size.

The invention provides a method for converter steelmaking by LF (Ladle Furnace) refining furnace reducing slag. The method comprises the following steps of: cooling the reducing slag to 850 plus / minus 30 DEG C, crushing the reducing slag into slag blocks with the diameters of 50-80mm, and loading 300-360kg of slag blocks into a scrap steel hopper of a converter; during smelting, adding scrap steels and the reducing slag into the converter, and then adding 105-115 tons of molten iron, wherein the temperature of the molten iron is 1250-3500 DEG C; after feeding of the converter is finished, carrying out converting by a lower gun of the converter, controlling an oxygen flow to be 15000m<3> / h, adding 2.0 tons of limes and 2.5 tons of dolomites when converting is implemented, adding 1.0 ton of limes and 0.5-1.0 ton of dolomites after the limes and the dolomites are added for 3min, adding the oxygen flow to reach 22000m<3> / h, implementing a decarbonization and temperature rising stage, maintaining for 7-12min, and then carrying out deslagging and steel tapping to finish the once melting in the smelting process.

The invention discloses a spinosad soluble agent which comprises the following components based on the mass fraction: 2.5%-28% of spinosad bulk drug, 10%-12% of surfactant, 21%-25% of adjuvant and 37%-66% of water. The invention further discloses a preparation method of the spinosad soluble agent, comprising the following steps: proportionally weighing the spinosad bulk drug, the surfactant, the adjuvant and water; placing the materials into a reaction bottle; and under the water bath condition at the temperature of 20-100 DEG C, fully stirring the materials into a transparent liquid to finally obtain the spinosad soluble agent. In the invention, the botanical pesticide spinosad can be dissolved in a solvent to obtain the spinosad soluble agent by adopting a simple, safe and environmental-friendly process, which lays a foundation for application and popularization of the spinosad soluble agent in agricultural production.

The invention provides iron phosphate dehydrate and a preparation method thereof, iron phosphate, lithium iron phosphate and a lithium ion battery, and relates to the field of lithium batteries, the preparation method of iron phosphate dehydrate uses pyrite cinder to obtain a free iron source, high-purity iron hydroxide is obtained through acid leaching and pH adjustment, and then through introduction of a complexing agent, high-purity iron phosphate is obtained. The dissolution of ferric hydroxide is realized under a relatively low ferrophosphorus ratio, a clarified ferrophosphorus solution is obtained, and the cost is much lower than that of BOM in the prior art. The iron phosphate dihydrate is synthesized through a two-step method, the first step is to add an iron complexing agent, the second step is to dilute a ferrophosphorus solution, and the iron phosphate dihydrate is precipitated at high temperature. By adding the iron complexing agent, it is guaranteed that ferrophosphorus is not subjected to precipitation reaction under the high concentration, wrapping and entrainment of iron oxide red or ferric hydroxide are avoided through the two-step reaction of dissolving first and then precipitating, the purity of obtained iron phosphate dihydrate is higher, and the electrical performance of synthesized lithium iron phosphate is better.

The invention discloses an edible mushroom nourishing powder product including, by weight, 15-30 parts of a morchella enzymolyzed powder, 1-3 parts of an animal protein hydrolyzed powder, 15-20 parts of a lentinula edodes enzymolyzed powder, and 3-5 parts of pickled vegetable fermentation liquid drying-frozen powder. The morchella enzymolyzed powder is prepared through a following process: preparing the morchella through a fermentation method; adjusting a temperature to 40-60 DEG C; adding cellulase accounting for 0.5-2% by weight of a fermentation liquid of the morchella for carrying out an enzymolysis process; adding flavors protease accounting for 0.3-1% by weight of the fermentation liquid of the morchella for carrying out the enzymolysis process; adjusting the temperature to 90-110 DEG C and maintaining the temperature for 5-10 min; carrying out a centrifugal separation process to obtain a supernate; and drying the supernate to obtain the morchella enzymolyzed powder. The product is delicious in flavor, is rich in various nutritional functional components, is an edible mushroom deep processed product in which nutritional, nourishing and human body immunity adjusting functions are integrated, is convenient to eat and can be directly eaten or can be eaten after being dissolved in water.

The invention discloses a safe and environment-friendly aromatic amine production system, which comprises a nitrification system, a washing system, a hydrodesolvation system and a dehydration and deaniline system. The nitrification system comprises a microchannel nitrifier, an acid separator and a vacuum concentration system, and the washing system comprises a washing tower and a sewage treatmentsystem; the hydrodesolvation system comprises a hydrogenation system and a desolvation tower, and the dehydration and deaniline system comprises a dehydration tower, a deaniline tower and a rectification system. The production process comprises the following steps: (1) continuous nitrification; (2) continuous washing; (3) hydrodesolvation; (4) dehydration and deaniline. The safe and environment-friendly aromatic amine production system and process disclosed by the invention have the advantages of simple technological process, safe, environment-friendly and reliable operation, low energy consumption, low equipment investment, simple operation, reduction in amount of a nitrifying material, improvement on safety of the nitrification system, elimination of a pot type concentration system withserious environmental pollution, reduction in investment and operating cost, good washing effect, low sewage treatment capacity, and reduction in production cost.

The invention discloses a method for extracting vanadium by decarburization-crystal breaking roasting and reinforced acid leaching from vanadium-containing stone coal. The method comprises the following steps that (1) a vanadium-containing stone coal block body is crushed and ground to obtain stone coal mine powder; (2) hot flue gas is fed into a suspension roasting device, and the coal mine powder is conveyed into the suspension roasting device, is suspended under the action of the high-temperature air flow, and is discharged after heat storage roasting at the temperature of 700-900 DEG C; (3) the coal mine powder is conveyed to a decarburization roasting device, air is fed to suspend the heat-storage stone coal mine powder, decarbonizing roasting is carried out at the temperature of 500-800 DEG C, and a decarburized material is discharged; (4) a mixed gas of air and nitrogen is fed into a crystal breaking roasting device, the decarburized material is conveyed to the crystal breakingroasting device for suspension, an oxidation reaction is performed at the temperature of 750-900 DEG C, and a crystal-breaking roasting material is discharged; and (5) vanadium is extracted by acid leaching in a sulfuric acid solution. The method is simple in process flow, uniform in product property, large in equipment processing amount, efficient, energy-saving and environment-friendly, and large-scale production is easy to achieve.

The invention relates to a detection method for determining the chloride ion content in sea sand. The method comprises the following steps: the sea sand dried to constant weight is added into boiled deionized water and fully stirred, stands and then is filtered to obtain washed sea sand and washing filtrate; the washed sea sand is ground into sea sand powder, and the sea sand powder is added intothe deionized water, fully stirred and filtered to obtain powder filtrate; half of the washing filtrate and half of the powder filtrate are measured, mixed and stirred to prepare mixed filtrate; the chloride ion contents of the washing filtrate, the powder filtrate and the mixed filtrate are determined with a silver nitrate titration method respectively, detection results are analyzed and corrected, and the chloride ion content in the sea sand is obtained. According to the method, the release of chloride ions from the tight wrapping films and cracks on the surface of the sea sand is promoted to a large extent, and the authenticity of the detection result of the chloride ion content in the sea sand is guaranteed scientifically. The chloride ions can be rapidly dissolved, the detection timeis greatly shortened, and the accuracy of the detection result of the chloride ion content is remarkably improved.

The invention relates to the technical field of traditional Chinese medicine decoction pieces, in particular to radix angelicae sinensis traditional Chinese medicine decoction pieces and a preparationmethod thereof. The preparation method comprises the following steps of A, material selection and washing; B, infiltration; C, slicing and steaming; D, vacuum freeze drying and smashing; E, encapsulation; F, drying and tabletting. The preparation method is simple in process, the operation is easy to control, the production efficiency is high, and the cost is low; through encapsulation, active functional ingredients in radix angelicae sinensis are effectively protected, the water content is equal to or lower than 4.5%, the ligustilide content is 57.83%-58.64%, the ferulic acid content is 0.061-0.073%, the radix angelicae sinensis traditional Chinese medicine decoction pieces prepared by using the method are easy to dissolve and easy to digest and absorb, the dissolution rate is 97.25-98.88%, and bacteria are not easy to breed. The content of aflatoxin B1 is 1.6-2.3 microgram / kg, the shelf life is long, the quality is stable and the preparation method can be used for massive industrialproduction.

A method of testing a tensile property of a single component in a composite fiber is disclosed. The method includes S1) selecting the composite fiber, S2) fixing the composite fiber, S3) adding the fixed composite fiber to a container containing a specific solution, heating, dissolving, and maintaining a fiber to be tested, S4) checking the form of the fiber to be tested, S5) testing the tensile property of the fiber to be tested by a single fibre tensile strength tester, S6) averaging single fibre tensile strength data, and S7) averaging for a second time. The method can achieve dissolution of other fiber components except the fiber to be tested in the composite fiber and tensile property testing of an ultrafine fiber, reduces a tensile property test error of a single component in the composite fiber, and increases the testing efficiency.

Relating to the technical field of rapid detection of drugs, food and cosmetics, etc., the invention discloses an integrated rapid detection reaction tube, which comprises a sealing cover (1), a filter tube (2), a reaction tube (3) and a reaction reagent (4). The sealing cover (1) is disposed at the top of the reaction tube (3), the filter tube (2) is sleeved in the reaction tube (3), and a filter membrane is mounted at the bottom or circumference of the filter tube (2), or the filter tube (2) can be in the form of a hollow filter element. According to the characteristics of a sample dissolution reagent, the reaction tube (3), the filter tube (2) and the filter material are all made of acid-base or organic solvent resistant plastic or glass. The reaction reagent (4) is subpackaged into the reaction tube (3) in advance or freeze dried; or the reaction reagent (4) can be made into tablets or pills and then placed in the reaction tube (3). During practical use, the sample is placed in the filter tube (2), the dissolution reagent is added, then sealing, shaking, centrifugation and reaction are carried out, and the result can be observed directly. The integrated rapid detection reaction tube provided in the invention realizes integration of sample dissolution, filtration and reaction, and has the advantages of convenient use, high efficiency, strong practicability, and easy realization of standardization, thus being especially suitable for spot rapid detection of drugs, food and cosmetics.

The invention provides a chelating augmented injection agent for a water injection well and a preparation method of the chelating augmented injection agent. The chelating augmented injection agent isprepared from the following raw materials in percentage by mass: 26%-35% of an amino cartankylic acid chelating agent, 10%-14% of a penetrating agent, 12%-16% of an ampholytic surfactant, 14%-18% of anonionic surfactant, 18%-22% of a mutual solvent and the balance of water. The chelating augmented injection agent for the water injection well can be used for treating water injection wells with poor injection water quality, stratum scaling and high residual oil saturation and water injection wells with long-term produced water reinjection, resulting in high water injection pressure and seriousunder-injection of the water injection wells or long-term water injection under-injection wells. The crude oil stripped from the rock surface is dispersed into small oil drops under the action of thesurfactant, and the flowing capacity of the crude oil passing through the throat is improved, so that the reservoir permeability is improved, the stratum is dredged, the oil well liquid supply capacity is recovered, and normal water injection of a water well is realized.

The invention relates to an environment-friendly nickel stripper and a preparation method and using method thereof. The nickel stripper includes 30-150 g of a sulfuric acid solution, 20-50 g of a hydrogen peroxide solution, 4-10 g of a nitric acid solution, 1-10 g of a dissolution promoter, 1-5 g of a complexing agent and 1-5 g of a stabilizer per liter, where solvents are pure water. According tothe nickel stripper, a small amount of nitric acid is added into a sulfuric acid-hydrogen peroxide system, the nickel stripping speed is high, the stripping speed of a nickel plating layer reaches 2-4 micrometers / min, no corrosion is caused to a stainless steel base, a small amount of nitric acid is consumed, and the requirement for environmental protection can be met.

The invention discloses herbal antibacterial liquid which is prepared from the following components in percentage by mass: 0.06-0.10% of thymol crystals, 0.03-0.08% of clove oil, 0.03-0.08% of eucalyptus oil, 0.03-0.08% of wintergreen oil, 0.05-0.10% of menthol, 0.7-1.0% of poloxamer 407, 0.4-0.6% of xylitol, 18.0-22.0% of edible alcohol, 0-0.1% of flavoring agent and the balance of purified water, based on 100% in total. The raw materials, directly extracted from natural plants, have high safety; during use, the herbal antibacterial liquid prevents pathogenicity, anaphylaxis and drug resistance and can be widely applied to all people, particularly to the aged, the children and the pregnant women; moreover, the herbal antibacterial liquid has an obvious treatment effect on dental caries, oral ulcer, gingivitis, gum bleeding, toothache, halitosis, periodontitis and faucitis as well as an obvious effect of eliminating bad breath, and is safe to use and stable in curative effect.