177results about How to "Realize multiple recycling" patented technology

The invention relates to an anhydrous recycling dyeing method of an activated dye. The method comprises the following steps: adding the dye to a polar organic solvent; adding electrolyte and organic alkali, and dissolving, so as to obtain a dye bath, wherein the proportional relation of the dye to the polar organic solvent to the electrolyte to the organic alkali is (0.5-30g):1L:(0-10g):(0.1-30g); pre-swelling a pure cotton fabric in the polar organic solvent at 50-150 DEG C for 0.5-24 hours; then dyeing in the dye bath at 45-130 DEG C for 0.5-3 hours at the dyeing bath ratio of 1:10 to 1:50; and cleaning and drying, so as to obtain the dyed fabric. The residual dye liquid generated in the method disclosed by the invention does not contain a hydrolyzed dye, and can achieve recycling of dye liquor just by directly supplying the dye and assistants.

The invention discloses a biology base polymer aerogel oil absorption material. The oil absorption material is prepared by the following steps: at first, crosslinking biology base polymers by a crosslinking agent, to obtain a precursor liquid, then freeze-drying the precursor liquid to obtain aerogel, and finally grafting silane onto the aerogel surface to obtain the hydrophobic biology base polymer aerogel oil absorption material. The density of the oil absorption material is 3.8 to 23.1 kg/m3. The water contact angle is at least 117.8 degrees. The adsorption capacities on gasoline, paraffin oil, chloroform, and crude oil are 30.5-109.0 g/g, 33.2-131.2 g/g, 58.2-163.0 g/g, and 24.7-95.8 g/g. After 50 times of gasoline adsorption-extrusion circulation, the retention rate of adsorption capacity is 43 to 99%. The disclosed aerogel oil absorption material has the advantages of large oil absorption capacity and high oil absorption efficiency. Moreover, the oil absorption material can be repeatedly used by simply extruding the oil absorption material, while a high retention rate of adsorption capacity can be maintained. At the same time, the raw material sources are wide, the raw materials are cheap and easily available, the preparation is simple, the technology is matured, the method is environment-friendly, and the requirements of sustainable development can be met.

The invention discloses a method for absorbing and separating light hydrocarbons from dry gas or industrial tail gas by utilizing an ionic liquid. The ionic liquid or a mixed solvent of the ionic liquid and a molecular solvent is taken as an absorbent to be in contact with the dry gas or the industrial tail gas, an absorption liquid containing the light hydrocarbons is obtained by absorption and the light hydrocarbons are further obtained by desorption and separation; and the light hydrocarbons are alkanes or olefins which mainly contain C2-C4. The invention provides the method for absorbing and separating the light hydrocarbons from the dry gas or the industrial tail gas by utilizing the ionic liquid. The ionic liquid or the mixed solvent of the ionic liquid and the molecular solvent is taken as the absorbent, an absorption-desorption method is adopted for recovery and separation of the light hydrocarbons, and the absorbent has very high solubility of the light hydrocarbons and separation selectivity, so that efficient separation and recovery of the light hydrocarbons can be realized and the highest comprehensive recovery rate can achieve 98.5%.

The invention discloses a three-dimensional fiber-based composite aerogel type adsorbent preparation method. According to the method, cellulosic fiber, chitosan and sodium alginate which generally exist in natural world are utilized as raw materials. The method comprises the steps: firstly, utilizing periodate and metaphosphoric acid to sequentially chemically modify the cellulosic fiber; then crosslinking the modified cellulosic fiber with the chitosan; then compounding with the sodium alginate; freeze drying to obtain a three-dimensional fiber-based composite aerogel type adsorbent. The prepared adsorbent disclosed by the invention has high safe stability, has a good adsorption effect on negative ion pollutants and positive ion pollutants and can be applied to purifying heavy metal ion wastewater and dyestuff wastewater; in addition, the cellulosic fiber added into the adsorbent disclosed by the invention not only can serve as a framework and a reinforcing material, but also can be crosslinked with the chitosan to improve compression strength, morphology and structural stability of the whole aerogel adsorbent; thus, the adsorbent can be repeatedly used for many times, and the characteristics of rice inner holes and large specific surface area of the aerogel are fully played.

The present invention relates to a method for planting forage grass by utilizing heliogreenhouse. It is characterized by that said method includes the following steps: close-planting and cultivating the germinated seeds in seedling room, controlling CO2 concentration and making it be 800-1200 ppm/cu.m, making cultivation at 10-40deg.C to obtain forage grass seedlings; transplanting the forage grass seedlings into a heliogreenhouse for promoting growth of forage grass, controlling CO2 concentration and making it be 800-1200 ppm/cu.m, after the forage grass seedlings are grown for 70-160 days at 10-40deg.C, harvesting forage grass. Several heliogreenhouses for promoting growth of forage grass can be combined together so as to form a forage grass production system.

The invention discloses a method for separating alpha-ketoglutaric acid from a conversion solution, which comprises the following steps: sequentially carrying out ceramic filtration, ultrafiltration and reverse osmosis on the conversion solution to obtain an alpha-ketoglutaric acid concentrated solution; reacting the obtained concentrated solution with calcium superchloride, and filtering to obtain alpha-ketoglutarate; adding the alpha-ketoglutarate and ethanol into a reaction kettle, slowly and dropwisely adding sulfuric acid, stopping adding the acid when the pH value of the ethanol solution is 1.3-1.5, stirring to react to generate a calcium sulfate precipitate, filtering, and collecting the filtrate which is a ketoglutaric acid ethanol solution; eluting the residual alpha-ketoglutaric acid from the calcium sulfate with ethanol, and collecting the eluting solution; and mixing the filtrate and eluting solution, and heating and concentrating under reduced pressure to precipitate the alpha-ketoglutaric acid crystal. The membrane filtration technique is adopted to avoid abundant water evaporation; and thus, the method has the advantages of energy saving, high production yield, favorable crystal form, light color of the crystal grain, and stable product quality, and can easily implement industrialized large-scale production.

The invention discloses a mask assembly, a mask frame and a mask supporting frame. The mask assembly comprises the mask frame and the mask supporting frame; the mask frame comprises at least one firstconnecting part; the mask supporting frame comprises at least one second connecting part; and the mask frame is detachably connected with the mask supporting frame through the at least one first connecting part and the at least one second connecting part. The mask assembly comprises the mask frame and the mask supporting frame which are detachably connected, when the mask assembly is replaced, the size of the mask frame is not changed, so that the mask frame can be directly recycled simply by replacing the mask supporting frame. Repeated recycling of the mask frame can be realized, the replacement rate of the mask frame is lowered and the production cost is lowered.

The invention provides an aramid nanofiber-based composite film. The composite film is of a layered structure. The composite film is formed by stacking a plurality of single-layer aramid nanofiber-based films. The aramid nanofiber-based film comprises an aramid nanofiber matrix and an assembly element; the assembly element includes one or more of an inorganic sheet material, an inorganic line material and a polymer. The aramid nanofiber-based composite film provided by the invention has a compact layered structure, the thickness of a single-layer film is uniform, and the nano-scale uniform interlayer spacing is extremely small, so that the composite film has excellent comprehensive performance. The invention further provides a simple and efficient large-scale preparation method and a cyclic utilization method. The prepared aramid nano-fiber-based layered composite film material can be made into aramid nano-fiber-based composite slurry again, and then the aramid nano-fiber-based composite slurry is made into the layered composite film material again by virtue of a spraying and hot pressing combined method, so that repeated cyclic utilization of the layered composite film material isrealized.

The invention discloses a connecting buckle element between box plates of a circulating package box, which comprises a spring insertion sheet and a connecting insertion buckle, wherein the spring insertion sheet and the connecting insertion buckle can mutually buckled and dismounted, the upper part of the spring insertion sheet is a bending end capable of being inserted into a groove of a steel strip arranged at the outer edge of the box plates of the package box, the middle part is provided with an independent omega-shaped sheet metal component, a middle perforated hole groove is formed between the omega-shaped sheet metal component and a body of the spring insertion sheet, the lower part of the spring insertion sheets form two leaf springs in a bending mode, both ends of the leaf springs are embedded into the hole groove of the omega-shaped sheet metal component, a convex platform is formed in the middle part of the connecting insertion buckle, square holes are respectively punched in the middle parts of both ends connected with the convex platform, and press teeth capable of being fixedly connected with the box plates of the package box are formed at both sides of the square holes.

The invention discloses a clean coal gas production method. The clean coal gas production method is characterized in that the production method comprises the procedures of powdered coal gasification, dedusting in high-temperature segment and indirect cooling. The clean gas production method is composed of high-efficiency coal gas generation, heat recovery, high-temperature dedusting, and ash-free water cooling, therefore, the product gas can meet the requirement of the clean coal gas.

The invention relates to a preparation method of a plasma-sprayed ceramic coating for strengthening surface of a water pump impeller. The preparation method comprises the following steps: ultrasonically washing the surface of the water pump impeller with acetone, and drying; processing the surface of the water pump impeller through sand-blasting roughening by brown aluminum oxide; preheating the surface of a base body; and spraying ceramic powder onto the surface of the base body of the water pump impeller to obtain a durable and corrosion-resistant ceramic coating, wherein the ceramic coating on the surface of the impeller is obtained by being spraying for a plurality of times. The preparation method overcomes shortages of laser surface modification, thermal spraying, chemical plating and electroplating. The preparation method has the advantages that the use cycle of a water pump is obviously prolonged; requirements of the water pump impeller surface on corrosion resistance and cavitation resistance are met; workpieces are recycled repeatedly; processes are simple and feasible; the production efficiency is high; the automation degree is high; the sustainable development strategy is met; and the method has market economic benefits.

A potato cleaning device comprises a feeding device, a water supply device, a cleaning device body and a distribution device. The feeding device, the cleaning device body and the distribution device are sequentially communicated. The water supply device comprises a compound function pipeline system. The compound function pipeline system comprises a water inlet pipe and a drainage pipe, a water pump and a flow meter are arranged on the water inlet pipe, a flow meter is arranged on the drainage pipe, the water supply device is communicated with the cleaning device body through the water inlet pipe and the drainage pipe, and the water supply device and the cleaning device body form water supply device and cleaning device body internal circulation by means of backflow water from the cleaning device body to the water supply device. Soft cleaning teeth and cleaning cotton are distributed at intervals, so cleaning efficiency can be improved, and silt gathered in cleaning pits can be effectively cleaned away; a return water treatment device is added, so water resources are recycled many times; a guiding and classifying device is added, so potatoes are classified.

The invention discloses a fluorine modified Fe3O4 magnetic nano material and a preparation method and applications thereof, and belongs to the fields of magnetic functional materials and water treatment research. For the first time, an Fe3O4 magnetic nano material is doped and modified by negative fluorine ions; a solvothermal method is adopted to in-situ synthesize the fluorine modified Fe3O4 magnetic nano material, which has an excellent degrading performance on orange G dye wastewater, can be easily and magnetically separated and recovered, and can be used in cycle; furthermore, the raw materials are cheap and easily available, the operation is simple and convenient, and the nano material has a potential application prospect.

The invention belongs to the technical field of oil-based drilling treatment, and particularly relates to an extracting solvent for treating oil-based drillings and a preparation method thereof. The extracting solvent is prepared from alkyl chloride, magnesium powder and vinyl chloride in a solvent. The preparation method comprises the following steps: adding the solvent in a reaction vessel, pumping nitrogen for protection, and then sequentially adding the solvent, the alkyl chloride and the magnesium powder for reaction; then adding a catalyst and the vinyl chloride in the reaction vessel for reaction, and heating, distilling and filtering after the reaction is completed, thus obtaining the extracting solvent. According to the extracting solvent disclosed by the invention, the problems of lower circulation utilization rate, higher economic cost, serious environment pollution and serious potential safety hazard caused by volatility and low flash point of an existing conventional solvent are solved, and the extracting solvent has the advantages of high flash point, high security, good extracting effect, high recovery rate, small emission pollution, simple process technology, easiness in implementation and the like.

The invention discloses an anti-pricking tire, comprising a tire body, a tire tread integrally vulcanized with the tire body, or a tire tread matched with teeth and grooves on the tire body, wherein belted layers are arranged in the tire tread; and at least one of the belted layers is a spiral belted layer wound by steel wires along the rotary direction of the tire. According to the anti-pricking tire disclosed by the invention, the anti-pricking performance can be improved, and the service life can be prolonged.

The invention relates to a preparation method of a copper tungstate nanometer fiber photocatalyst, and belongs to the technical field of photocatalysis. According to the preparation method, adopted one-dimensional copper tungstate nanometer fiber is prepared through static spinning technology, is uniform in diameter, large in specific surface area, and short in photon-generated carrier transmission distance, and is capable of increasing visible light organic matter degradation catalytic activity effectively. The preparation method mainly comprises following steps: an inorganic tungsten salt and an inorganic copper salt are dissolved in ethanol of DMF solution, PAN or PVP is added so as to obtain a spinning solution, a static spinning device is adopted to obtain composite fiber, and high temperature sintering is carried out so as to obtain the porous copper tungstate nanometer fiber. The preparation method is simple in operation; cost is low; it is promising to realize large scale preparation of copper tungstate nanometer fiber; and the application prospect in the field of environment and energy is promising.

The invention discloses a method for reducing biogenic amine through cyclic rice soaking by inoculating lactobacillus plantarum not generating the biogenic amine, and belongs to the technical field offood processing and manufacturing. The lactobacillus plantarum is inoculated in the rice soaking process of a grain product; the result shows that by inoculating the lactobacillus plantarum, the content of the biogenic amine in rice soaking water can be effectively reduced, so that the rice soaking water is clear; and conditions are created for the cyclic utilization of rice milk water.

The invention provides a verticality measuring device after complete installation of a wall template, which comprises a vertical support rod, wherein an auxiliary ruler is vertically connected to thevertical support rod, a sliding device is arranged between the vertical support rod and the auxiliary ruler to realize the vertical sliding of the auxiliary ruler on the vertical support rod, a main scale is vertically connected to the vertical support rod, a line weight is connected to the auxiliary ruler, the line weight naturally drops to the main scale, and a fixed point of the line weight anda zero scale line in the center of the main scale are kept on the same vertical line. The invention also provides a verticality measuring method, which is characterized by avoiding the influence of areinforcing member according to the height of a wall body, adjusting the height of the auxiliary ruler, performing locking by using a locking screw, and reading the deviation of the line weight on the main scale by a constructor who holds the vertical support rod by hands, so as to achieve measurement. The verticality measuring device can measure the installation precision in real time and control the construction quality, has simple operation, convenient material acquisition and small measurement error, and solves the problem of low work efficiency in a traditional wall template installationverticality measurement method.