4049 results about "Water washing" patented technology

The invention provides lithium and aluminum hydroxyfluoride extraction equipment and a low-grade cathode carbon block recovery process, and relates to the technical field of metal recycling, the lithium and aluminum hydroxyfluoride extraction equipment comprises a bracket, a tank body, a mounting plate, a driving mechanism, a reciprocating mechanism, a water washing liquid discharging mechanism and an acid leaching liquid discharging mechanism; the tank body is installed in the support, a top plate is installed at the top end of the tank body through bolts, and a supporting frame is installed on the upper surface of the top plate through bolts. According to the scheme, a layer of pickle liquor is covered and injected after water washing liquid enters, so that the two extracting solutions can be added in a laminated manner, and the water washing liquid and the pickle liquor are quantitatively added in the laminated adding process, so that layered mixing is realized in the adding process of the device, and the efficiency of the device is improved. According to the device, the subsequent stirring time can be shortened, electric power is saved, meanwhile, it is guaranteed that two kinds of liquid are mixed more sufficiently and stably, and meanwhile the internal alkaline balance can be guaranteed through a stacked adding mode.

The invention discloses a cement-based aerogel heat preservation and heat insulation coating material for concrete and a spraying construction process of the cement-based aerogel heat preservation and heat insulation coating material, and belongs to the technical field of concrete materials. The coating material is prepared from powder, composite emulsion and water, and the powder is prepared by mixing superfine sand, cement, modified silicon dioxide-carbon nanotube composite aerogel powder, hollow glass beads, nanofibers, graphene nanosheets, an ultraviolet light absorber, a water reducing agent and a defoaming agent. The composite emulsion is composed of an acrylate copolymer emulsion, a polyvinyl acetate-ethylene emulsion, a temperature-sensitive polymer emulsion and a coalescing agent. Based on the multi-stage pore network and multi-component emulsion optimization design and multi-component synergistic effect, the material has good fluidity after being mixed, and has low heat conductivity coefficient, high strength and high toughness after being hardened; the construction technology of high-pressure water flushing and layered spraying is provided, and the method has the advantages of being efficient in construction, stable in quality and the like and can be applied to heat preservation and heat insulation of a concrete structure in a severe environment.

The invention provides a device and method for removing aerosol based on a charged spraying coupling pool washing mechanism, and belongs to the field of nuclear auxiliary systems. The problem that radioactive aerosol particles generated when a radioactive contamination structure in a reactor is cut underwater can be released into the external environment is solved. Wherein the underwater laser cutting assembly is used for cutting a to-be-cut piece; the auxiliary gas chamber is communicated with the laser cutting nozzle; the aerosol charging assembly can enable aerosol particles generated by underwater laser cutting to carry negative charges; the baffle can gather the aerosol particles and guide the aerosol particles to the aerosol charging assembly; the liquid drop charged spraying assembly can spray liquid drops carrying positive charges, the liquid drops carrying positive charges and aerosol particles carrying negative charges can attract each other and fall to the liquid level, and the Venturi washing assembly can extract gas above the liquid level and spray the gas below the liquid level. The device can efficiently remove radioactive aerosol particles generated by cutting and disassembling radioactive contaminated components in a nuclear power plant, and radioactive contamination to the environment is prevented.

The present application relates to hydrogen production technology field, especially to a kind of methanol hydrogen production method, comprising the following steps: S10: methanol water is heated and vaporized to obtain methanol water vapor;S20: methanol reforming reaction obtains hydrogen mixture gas;S30: after cooling treatment to hydrogen mixture gas, through water washing tower absorption unreacted methanol water, then, adjust the relative humidity and temperature of hydrogen mixture gas;S40: hydrogen mixture gas is input into carbon dioxide absorption tower to remove carbon dioxide;S50: after removing carbon dioxide, product hydrogen is obtained and input hydrogen tank storage to supply user end.The above-mentioned methanol hydrogen production method, by methanol water vapor reforming hydrogen treatment, obtains hydrogen mixture gas.Again, hydrogen mixture gas is purified to obtain product hydrogen with very low carbon monoxide content, with raw material easy to transport, the hydrogen purity of output is high, equipment construction cost is low, and energy consumption is low and the like advantages, reach the purpose of expanding hydrogen application range.

The invention discloses a preparation method of an In2O3-Cu-Cu2O ternary heterojunction catalyst and a preparation method of the In2O3-Cu-Cu2O ternary heterojunction catalyst. The method comprises the following steps: at room temperature and normal pressure, firstly, dissolving indium chloride tetrahydrate in a mixed solvent of ethylenediamine-ethylene glycol (the volume ratio is 1: 20-1: 30) and dihydric alcohol amine to obtain a homogeneous solution; then transferring the solution to a hydrothermal kettle, adding deionized water and Cu2O powder with different volumes, and carrying out hydrothermal crystallization at 160-200 DEG C for 10-14 hours; and centrifuging the obtained precipitate, alternately washing with water and alcohol for 2-3 times, carrying out vacuum drying at 60 DEG C for 5-7 hours, heating to 600 + / -10 DEG C at a speed of 3-5 DEG C / min in an N2 atmosphere, calcining for 3 hours, and cooling along with a furnace to obtain a target product. By adjusting the adding amount of the deionized water, the mass proportion of the three phases of In2O3, Cu and Cu2O can be continuously adjusted and controlled, and controllable preparation from'rich copper 'to'rich cuprous oxide' and'stable ternary 'is achieved.

The invention belongs to the technical field of textile dyeing methods, and particularly relates to a tension-free anti-fibrillation dyeing method for lyocell blended yarn. The tension-free fibrillating-resistant dyeing method of the lyocell blended yarn comprises the following steps: preparing a bobbin-free loose yarn bundle, namely loosely winding lyocell pure spinning or blended yarn into tension-free yarn bundles of which the weight is 0.5-1.5 kg by adopting an integrated chuck bobbin, and meanwhile, wrapping the tension-free yarn bundles with knitted sock legs; according to the tension-free loose yarn bundle filling, a cross-shaped lifting chain is matched with a yarn bundle grate, staggered filling shaped like a Chinese character'pin 'is achieved, and the loading rate ranges from 90% to 120%. The tension-free one-bath dyeing / cross-linking comprises the following steps: pre-treating the filled tension-free loose yarn bundle, performing dyeing and cross-linking through a one-bath two-step method, and finally performing soaping, hot water washing, color fixation / softening one-bath treatment and radio frequency drying. According to the tension-free antifibrillating dyeing method for the lyocell blended yarn, dyeing is uniform, the color difference is small, and the percent of pass is increased.

The invention provides a metal gallium extraction device and an extraction method thereof. The gallium extraction device comprises an extraction tank, a base and an extraction mechanism, a top plate is hermetically mounted at the top of the extraction tank through bolts, a mounting cover is mounted at the top of the top plate through bolts, a feeding pipe is mounted on the inner wall of the mounting cover, a recycling pipe is mounted at the bottom end of the extraction tank, a suction pipe is fixedly arranged on the side wall of the extraction tank, and the extraction mechanism comprises a mounting plate fixedly arranged on the inner wall of the extraction tank; according to the scheme, the cleaning plate designed in a special shape is used for controlling the screw rod to rotate in a linkage manner, so that water-phase clarified matters are synchronously treated in the process of discharging a water phase, the interior of the extraction tank can be well and finely cleaned, and meanwhile, the clarified matters are centrally treated, so that the blockage of a recovery pipe can be avoided; therefore, the top plate does not need to be opened for washing, clarified impurities in the extraction tank can be effectively reduced, and the subsequent extraction effect and the extraction stability are ensured.

The invention discloses a control process and equipment for processing waste gas treatment in the generic semiconductor industry, and relates to the technical field of semiconductor, panel, solar energy and LED waste gas treatment. The equipment comprises a gas inlet control unit, a plasma torch, a reaction cavity, a water tank and a washing tower which are sequentially connected, wherein the gas inlet control unit comprises a three-way valve to realize switching of a main machine and a standby machine; the water tank is provided with a heat exchange and monitoring part; the washing tower comprises a washing section, a turbulent flow section and a demisting section. The process comprises the steps of air inlet control, pyrolysis combustion, cooling and pre-dedusting, water washing, washing tower treatment and the like, and is combined with PID control of plasma power and CDA consumption, and logic control of drainage, flushing and the like. The problems of pipeline blockage and corrosion caused by high operation cost, short PM period and poor washing effect in the process of treating high-dust and high-corrosion process waste gas in the prior art are solved, and the method has the advantages of reducing the cost, prolonging the maintenance period, improving the treatment efficiency and the like.

The invention relates to the technical field of aluminum ash washing filtrate recycling intelligent control, in particular to an aluminum ash washing filtrate recycling intelligent control device and method, and the device comprises a multi-parameter online detection module, a data processing optimization module, a process parameter execution module and a filtrate circulation module. The multi-parameter online detection module is used for cooperatively detecting the real-time concentration of trace impurity ions such as fluorine, potassium and sodium through an ion selective electrode array and a micro spectrum analyzer; predicting the dissolution trend of impurity ions through an LSTM model and generating a process parameter adjustment instruction; the process parameter execution module regulates and controls the stirring strength, the liquid-solid ratio and the water-ash contact time in a linkage manner; and the filtrate circulating module is used for buffering, homogenizing and proportionally mixing the washed liquid phase to generate a regenerated leaching medium for recycling. According to the method, the detection data and the model decision are dynamically matched through the closed-loop control process, and the impurity element removal efficiency is improved.

The invention discloses an environment-friendly electrolyte for anodic oxidation of titanium and titanium alloy workpieces and an electrolytic coloring method. The electrolyte comprises 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water. The electrolytic coloring method comprises the steps of pretreatment, anodic oxidation coloring and aftertreatment. The pretreatment comprises alkali washing oil removal, water washing and laser treatment; and an electrolyte mixed by 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water is used for anodic oxidation coloring. The post-treatment comprises sealing treatment and drying. According to the technical scheme, the technical problems that the anodic oxidation coloring technology is completely free of fluorine, low in toxicity and safe to operate, and the oxidation waste liquid is free of pollution and easy to treat can be solved, existing pretreatment steps can be simplified, and meanwhile uniform coloring is achieved.

The invention discloses an ethylene-vinyl alcohol copolymer and a preparation method thereof, and relates to the technical field of resin. According to the technical scheme, the preparation method comprises the following steps: adding ethylene, low-carbon alkane, alkyl acid ethyl ester, alkyl acid vinyl ester and a carbon-carbon skeleton initiator into a reaction kettle, and carrying out a free radical polymerization reaction; adding a polymerization inhibitor to terminate the reaction, removing low-carbon alkane, unreacted ethylene and alkyl acid vinyl ester, and preparing the reaction liquid into an alcoholic solution; adding a catalyst into the alcohol solution for saponification reaction, and then performing acid pickling, water washing and drying to obtain the ethylene-vinyl alcohol copolymer. The low-carbon alkane which is low in boiling point, easy to vaporize and high in latent heat of vaporization and the saturated alkyl acid ethyl ester with good solubility are adopted as the mixed solvent to replace a traditional alcohol solvent, so that removal and control of reaction heat are facilitated, generation of insoluble gel is reduced, a copolymer with narrow molecular weight distribution is easy to obtain, and the method is suitable for industrial production. The cost that azeotrope formed by the alcohol solvent and the monomer is difficult to separate and recover is greatly reduced, and the production efficiency is improved.

The invention relates to an alkaline activated carbon multi-stage synergistic potassium removal method, and belongs to the technical field of activated carbon materials. According to the method, a four-step synergistic process of water washing, acid pickling, ion exchange and nitrogen calcination is adopted, and a waste acid recycling closed-loop system is combined. The deep removal of residual potassium is realized through the synergistic effect of countercurrent water washing, pH (Potential of Hydrogen) staged regulation and control acid washing, deep potassium removal by ion exchange resin and nitrogen protection calcination, and meanwhile, the high specific surface area is maintained; the pickling waste liquid is neutralized, concentrated and crystallized to be converted into agricultural potash fertilizer, and mother liquid is recycled to form green circulation.

The invention discloses a preparation method for preparing a biomass porous carbon material through high-temperature carbonization of molten salt and application of the biomass porous carbon material, and belongs to the technical field of synthesis of inorganic functional materials. According to the technical scheme, the method is characterized in that sodium chloride and potassium chloride are mixed into mixed salt according to different proportions, then the mixed salt is mixed with enteromorpha biomass according to a certain proportion, the mixture is placed in a porcelain crucible, the mixed salt is added for covering, the porcelain crucible is placed in a muffle furnace to be heated and carbonized, and the porous biomass carbon material is obtained after water washing and drying. The enteromorpha biomass is selected as the raw material, the operation is simple and controllable, the cost is low, batch production can be realized, and the prepared novel porous biomass carbon material has a complex porous structure, a large specific surface area, a very good catalytic effect, strong adsorption capacity and good conductivity, and shows excellent performance when being applied to the field of advanced oxidation.

The invention relates to the technical field of biomedical materials, in particular to a metal-loaded antibacterial agent and a preparation method thereof.The preparation method comprises the following steps that a metal precursor is loaded to the surface of a carrier, and then washing and drying are conducted; and carrying out mechanical ball milling on the dried sample by using a planetary ball mill, carrying out in-situ roasting in the mechanical ball milling process, cooling to room temperature, washing with water, and drying to obtain the metal-loaded antibacterial agent. According to the preparation method, the regulation and control on the interaction between the metal and the carrier can be realized by utilizing mechanical ball milling, the interaction between the metal and the carrier in the prepared antibacterial agent is stronger than that of a sample prepared by an impregnation method, and the regulation and control on the interaction between the metal and the carrier can be realized by changing parameters of a ball milling process; and meanwhile, by regulating and controlling the interaction strength of the'metal-carrier ', the controllable slow release of metal ions can be realized, the antibacterial effect is ensured, and the action duration of the medicine is prolonged.

The invention provides a super-hydrophobic passion fruit peel carbon aerogel VOCs adsorbent based on low-temperature plasma synergistic nitrogen doping modification and a preparation method thereof, and relates to the technical field of VOCs adsorbents. The super-hydrophobic passion fruit peel carbon aerogel VOCs adsorbent based on low-temperature plasma synergistic nitrogen doping modification is prepared by crushing passion fruit peel, mixing the crushed passion fruit peel with a nitrogen-containing compound to form gel, performing low-temperature plasma modification, performing freeze drying, performing high-temperature carbonization, and performing water washing and drying. The adsorbent is spherical, and the water contact angle is 115.8 degrees to 152.4 degrees. The adsorbent disclosed by the invention has the advantages of super hydrophobicity, high specific surface area, developed microporous structure, excellent VOCs adsorption performance, broad-spectrum adsorption capacity, good reusability and mechanical strength, the preparation method is simple in process, green and environment-friendly, low in cost and good in universality, a new technical scheme is provided for VOCs treatment in a high-humidity environment, and the adsorbent has a good application prospect.

The utility model relates to the technical field of fly ash water washing dechlorination, and discloses an energy-saving and efficient fly ash water washing dechlorination system, which comprises a fly ash slurrying unit, a fly ash water washing dechlorination unit, a fly ash water washing dechlorination unit, a fly ash water washing dechlorination unit, a fly ash water washing dechlorination unit, a fly ash water washing dechlorination unit and a fly ash water washing dechlorination unit, the multi-stage washing unit is used for carrying out multi-stage washing on the pre-dissolved raw fly ash primary slurry, and the multi-stage washing unit is composed of a plurality of top driving stirring washing devices; the multi-stage vortex separation unit is used for carrying out multi-stage three-phase separation on the washed primary slurry; the multi-stage eddy current separation unit is composed of a plurality of integrated eddy current three-phase separation devices. According to the utility model, the fly ash pulping unit, the multi-stage washing unit, the multi-stage vortex separation unit, the mechanical solid-liquid separation unit, the weight removal unit, the evaporative crystallization unit and the waste gas and waste water treatment unit are organically combined, so that the backflow mechanism of fly ash washing is optimized, the water consumption is greatly reduced, high efficiency and energy conservation are realized, and the'zero emission 'of waste water is realized.

The invention discloses a chlorobenzene wastewater continuous stripping purification recovery device and an implementation method, the chlorobenzene wastewater continuous stripping purification recovery device comprises an aeration tank, an alkali water washing system, an acid water washing system, an acid-base neutralization system and a ferric hydroxide separation system, the aeration tank is connected with the alkali water washing system, the acid water washing system is connected with the alkali water washing system, and the acid water washing system is connected with the ferric hydroxide separation system. The acid-base neutralization system is connected with the alkali-water washing system, the acid-water washing system and the ferric hydroxide separation system, and the alkali-water washing system and the acid-water washing system are both in two-stage steam stripping, and have the following advantages: alkali washing water and acid washing water generated in the chlorobenzene production process are subjected to two-stage nitrogen steam stripping, so that the content of organic matters is greatly reduced; ferric hydroxide is generated through neutralization of acid-alkali wastewater, the total amount of the wastewater is reduced, then the ferric hydroxide reacts with hydrochloric acid in the pickling water to generate ferric trichloride, hydrochloric acid is neutralized, the neutralization product ferric hydroxide is consumed, the wastewater amount is reduced, and recycling of wastewater resources is achieved.

The invention relates to the technical field of dechlorination devices, and provides a high-chlorine coal washing dechlorination leaching device which comprises a dechlorination tank body provided with a washing dechlorination area, and a circulation opening is formed in the bottom of the washing dechlorination area; the conveying part is circularly arranged on the dechlorination tank body, the plurality of push plates are arranged on the conveying part, and the push plates are configured to move along the bottom of the washing dechlorination area under the driving of the conveying part; the screen piece is arranged on the circulation opening; the first spray pipe is arranged on the dechlorination tank body and located below the screen piece, the first spray pipe is provided with a first nozzle, and the first nozzle faces the screen piece. According to the technical scheme, the problems that in the prior art, the dechlorination effect needs to be improved when a traditional kettle body is subjected to water washing dechlorination, and a filter screen part in the kettle body is prone to being blocked are solved.

The present invention provides a system and method for extracting lithium from salt lake brine and preparing battery-grade lithium carbonate. The system includes a coagulation and precipitation system, a filtration system, an adsorption and desorption system, a calcium and magnesium removal system, a boron removal system, a concentration system, an evaporation system, and a lithium precipitation system connected in sequence. The calcium and magnesium removal system includes a first-stage reverse osmosis concentration unit, a first-stage nanofiltration calcium and magnesium removal unit, a second-stage reverse osmosis concentration unit, a multi-stage nanofiltration calcium and magnesium removal unit, and a calcium and magnesium ion exchange unit connected in sequence. The boron removal system includes a first-stage nanofiltration boron removal unit, a multi-stage nanofiltration boron removal unit, and a boron ion exchange unit connected in sequence. After the lithium precipitation system, there are also a precision filtration system and a water washing and drying system connected in sequence. By adopting the process of the present invention, the lithium recovery rate is improved, and the product is battery-grade lithium carbonate, greatly improving the resource utilization and recovery rate of the lithium extraction system, reducing the amount of externally added water and the consumption of sodium carbonate in the process of the lithium precipitation system.

The invention provides a preparation method of a Basa wood biomass porous carbon material and application of the Basa wood biomass porous carbon material in an aqueous zinc-benzoquinone battery, Basa wood is used as a raw material, under the action of a pore-forming agent and a nitrogen-containing organic matter, the Basa wood biomass porous carbon is obtained through a pre-carbonization and carbonization two-step process, acid pickling and water washing. The biomass porous carbon obtained by the invention has relatively high specific surface area and proper pore size distribution, has relatively good p-benzoquinone loading capacity, and is beneficial to transmission and storage of ions and electrochemical reaction. The aqueous zinc-benzoquinone battery prepared from the porous carbon material obtained by the invention has relatively high specific capacity and excellent cycle performance. The raw materials are cheap, easy to obtain and environmentally friendly, and the preparation process is simple, convenient to operate and extremely suitable for large-scale production and has huge potential application value.

The invention discloses a surface treatment process of a hydraulic rod and a coating monitoring system, relates to the technical field of electroplating, and aims to solve the problems that various complementary sensing technologies cannot be integrated, information such as thickness, uniformity and microstructure cannot be synchronously acquired in a lossless, in-situ and real-time manner, and closed-loop control cannot be formed based on the information in the background technology. According to the scheme, the method comprises the steps that PR electrolytic degreasing is conducted, a workpiece serves as an anode, an oil film is torn through the oxygen evolution effect, an extremely-thin oxidation film possibly existing on the surface of the workpiece is dissolved, base metal is completely activated, and an optimal combination basis is provided for a follow-up coating; and washing with hot water, namely removing residual alkaline degreasing fluid and emulsified oil stains by using hot water with the temperature higher than 60 DEG C in a stirring and spraying manner. According to the method, multi-dimensional information such as the thickness, the uniformity and the microstructure can be synchronously obtained in a lossless, in-situ and real-time mode in the surface treatment process, closed-loop control is formed based on the information, and it is ensured that plating growth is always located on the optimal track.

The invention provides a method for efficiently purifying lignin by using a composite alkali system, and relates to the technical field of lignin extraction and purification, wood fiber biomass is used as a raw material, KOH / thiourea composite alkali liquor with a specific mass ratio is adopted, and directional dissociation reaction is carried out under the conditions that the solid-to-liquid ratio is 1: (5-15), the temperature is 60-150 DEG C and inert gas protection is adopted; and after the reaction is ended, through a gradient acidification process (controlling the pH to be 10-12 and the pH to be 3-5 in stages) and by combining centrifugal filtration and water washing, ash content and carbohydrate residues are remarkably reduced, and high-quality lignin with the purity being greater than or equal to 91.16% is obtained. The method solves the problems of low purity and high impurity residue in the traditional process, and provides core raw material guarantee for lignin-based capacitor carbon.

The application discloses a porous aluminum-based carrier and a preparation method thereof, a CO2 adsorbent and application thereof. The preparation of the porous aluminum-based carrier comprises the following steps: segmental aging: a solution containing pseudo-boehmite is subjected to two-stage aging, the first stage is stirring aging, and the second stage is standing aging, the two kinds of aging modes are combined to improve the crystallinity of the pseudo-boehmite; organic solvent washing and pore expansion: the pseudo-boehmite is filtered out, and is subjected to water washing first and then organic solvent washing; segmental drying: low-temperature air blowing drying and vacuum drying are combined, the drying mode, the drying temperature and the solvent evaporation rate during drying are adjusted to avoid pore shrinkage or collapse caused by excessively high drying temperature and excessively fast solvent evaporation speed. The preparation of the porous aluminum-based carrier is simple in operation and low in energy consumption, and the CO2 adsorbent prepared from the porous aluminum-based carrier and an organic amine has excellent adsorption performance such as high adsorption capacity, fast adsorption rate and high stability.

The invention relates to the field of air dust falling equipment, in particular to an environment-friendly building construction dust falling treatment device which comprises a machine shell fixedly installed on a movable seat, the top of the machine shell is rotationally communicated with an air inlet pipe, and a driving part for driving the air inlet pipe to rotate is arranged on the machine shell; the fan is fixedly installed on the upper portion of the inner wall of the machine shell, an air outlet of the air inlet pipe is communicated with the fan, the bottom of the fan is fixedly communicated with a filter box, the fan blows air towards the filter box, and a plurality of filter screens are evenly assembled on the outer wall of the filter box in the circumferential direction at intervals. Air is doubly filtered through the filter screen and the water washing box, a linkage system of the shielding mechanism and the dust removal mechanism is matched, and under the condition that normal work of a filter channel of the filter box is not affected, clean air obtained after water washing is used for conducting back flushing cleaning on the isolated filter screen; the problem that the overall efficiency of traditional equipment is reduced due to filter screen blockage is effectively solved.

The invention provides a preparation method of high-performance polyacrylonitrile pre-oxidized fibers, and belongs to the technical field of preparation of carbon filaments from polyacrylonitrile. The preparation method comprises the following steps: adding hydroxylated carbon nanotubes into deionized water, performing ultrasonic dispersion, adding a modifier and a catalyst, continuing ultrasonic dispersion, heating to 80-90 DEG C, performing constant-temperature reaction, fully washing with water, and drying to obtain modified carbon nanotubes; dispersing the modified carbon nanotube in an N, N '-dimethylformamide solution, adding an acrylonitrile monomer, hydroxyethyl acrylate and an initiator, copolymerizing to form a carbon nanotube / acrylonitrile copolymer, and spinning to obtain a carbon nanotube / acrylonitrile copolymer fiber; the carbon nano tube / acrylonitrile copolymer fiber is placed in a microwave treatment device, and a plurality of microwave generators are arranged in the microwave treatment device and are used for carrying out segmented pre-oxidation on the carbon nano tube / acrylonitrile copolymer fiber. The problems that an existing polyacrylonitrile fiber pre-oxidation technology is high in energy consumption and low in strength, poor in flame retardance and the like due to the difference between internal and external pre-oxidation effects can be solved.

The invention relates to the technical field of fine chemical engineering and flame retardant preparation, and discloses a preparation method of bromo-triazine capable of improving thermal stability, and the preparation method comprises the following steps: mixing phenol, water and dichloromethane, controlling the temperature, and carrying out oxidative bromination reaction to prepare an organic phase containing tribromophenol; then, under the action of an organic amine catalyst, carrying out condensation reaction on the organic phase, liquid caustic soda and cyanuric chloride; after the reaction, washing with water to remove impurities; and in the presence of process water, firstly controlling the temperature at 38-42 DEG C for azeotropic desolvation, then raising the temperature to 85-95 DEG C for high-temperature crystallization and crystal growing, and finally cooling, filtering and drying to obtain the bromo-triazine product. By utilizing the high selectivity of the organic amine catalyst and a two-stage azeotropic crystallization process, the side reaction is effectively reduced, the solvent wrapped in the crystal is eliminated, the prepared product is high in main content and extremely low in volatile component, the temperature can reach 370 DEG C or above when the thermal weight loss is 2%, and the thermal stability is remarkably improved.

The invention provides ultrasonic washing and drying equipment for semiconductor parts, and belongs to the technical field of semiconductor part processing.The ultrasonic washing and drying equipment comprises a cleaning assembly, a filtering assembly, a moving assembly and a drying assembly, the cleaning assembly is composed of a box body, the top of the box body is rotationally connected with a deflector rod, the filtering assembly is fixedly installed in the box body, and the moving assembly is composed of a cross beam; a liftable bracket is arranged at the bottom of the cross beam, the drying assembly is composed of a shell, and a lifting mechanism is arranged below the shell. The cleaning assembly is used for cleaning the semiconductor parts, the multiple tank bodies are arranged for sequentially placing the screen frames and conducting ultrasonic cleaning, meanwhile, impurities are effectively removed in the chemical tank, clean water is used again for removing chemical residues so as to improve the water washing effect, the screen frames are controlled by the moving assembly to move, and the cleaning efficiency is improved. And the screen frame and the support can be automatically separated through the deflector rod, the semiconductor parts are dried through the drying assembly, and the machining efficiency is improved.

The invention relates to the field of traditional Chinese medicinal material processing, in particular to traditional Chinese medicinal material treatment equipment for wash supplies. Traditional Chinese medicine treatment equipment for wash supplies comprises a fixing frame, a water washing tank, a first conveying belt and a second conveying belt installed on the fixing frame. A rinsing bath is mounted on one side of the fixing frame; a first conveying belt is mounted on the fixing frame; a second conveying belt is installed on the fixing frame and located on the lower left portion of the first conveying belt. According to the loquat leaf screening device, diseased leaves recognized by the camera are grabbed and removed through the arranged grabber, the overlapped loquat leaves are grabbed and separated, and the placing state of the loquat leaves is adjusted, so that the screening efficiency is improved, and smooth proceeding of subsequent brushing operation is guaranteed; and the air exhaust piece is arranged at the third roller to exhaust floating fluff, so that pollution to the loquat leaves and the surrounding environment can be reduced.

The invention discloses a treatment system and method for waste incineration fly ash washing liquid cooperating with flue gas purification, and the system comprises a semi-dry desulfurization tower, a dust remover, an ash silo, a washing tank, a buffer tank, a water supply preheater and a wet washing tower which are connected with a main flue of an incineration plant, the method comprises the following steps: transferring waste incineration fly ash collected in the system into the water washing tank, and adding water for washing to obtain water washing liquid and desalted fly ash; the method comprises the following steps: spraying fly ash water washing liquid by using a wet washing tower, recovering tail flue gas waste heat, deeply removing residual acid gas in flue gas, concentrating and reducing the water washing liquid, and controlling the spraying amount to adjust the concentration ratio so as to realize the separation and solid-liquid separation of chlorine salt; introducing the concentrated water washing liquid into a semi-dry desulfurization tower, atomizing the water washing liquid into fine liquid drops by using a rotary atomizer, contacting the fine liquid drops with hot flue gas, evaporating the fine liquid drops to dryness, and absorbing acid gas in the flue gas at the same time, thereby realizing zero emission of the water washing liquid and cooperating with flue gas purification. According to the invention, the problem of high energy consumption of fly ash washing liquid treatment is solved, and the resource utilization rate of the washing liquid is improved.

The invention relates to a biological long-acting bactericide and a preparation method and application thereof.The biological long-acting bactericide can release a quaternary ammonium salt type sophorolipid sterilization unit with the sterilization effect according to needs, the sterilization time is effectively prolonged, the recycling performance of the bactericide is improved, and the biotoxicity of the bactericide is reduced; the excessive use of the bactericide is avoided to a great extent; in addition, the biological long-acting bactericide also has excellent substrate adhesion and washing resistance, and is beneficial to inhibition of adhesion of bacteria on the surface of a material, so that the surface of the material washed by water still keeps relatively high antibacterial ability.