53results about How to "Low solid content" patented technology

The invention relates to the technical field of desulfurization towers, and particularly discloses a concentration and crystallization section chemical solid-liquid separation type ammonia process desulfurization tower which comprises a desulfurization tower body, the desulfurization tower body is provided with a concentration section, an evaporation section and a spraying section from bottom to top, the concentration section of the desulfurization tower body is conical, the side wall of the desulfurization tower body is provided with an air inlet, and the spraying section is provided with an air outlet. A gas outlet is formed in the top end of the desulfurization tower body, and a supporting assembly is arranged at the bottom end of the desulfurization tower body; the concentrated solution is located at the concentration section of the desulfurization tower body, and the concentrated solution comprises a crystallization area and a clear liquid area; and the spraying assembly is located on the spraying section. The design of the cone structure at the bottom of the desulfurization tower body improves the separation efficiency of a clear liquid area and a crystallization area, the separation granularity is also increased, slurry in a concentration section is layered up and down according to the size of slurry particles, the solid content of a concentration cooling pump is reduced to below 10%, an installer of a distributor in the concentration section is omitted, and the failure rate is reduced.

The invention relates to a strong plugging type oil-based drilling fluid system suitable for a fractured formation and a preparation method thereof, the oil-based drilling fluid system comprises the following components by mass: 70-80 parts of base oil, 3-5 parts of an integrated emulsifier, 1-3 parts of an alkalinity regulator, 2-4 parts of a liquid filtrate reducer, and 1.5-3 parts of an oil-based efficient tackifying and shear strength improving agent, 1.5-3.0 parts of a multi-stage crack plugging agent and 0-80 parts of a weighting material. The strong-plugging oil-based drilling fluid is wide in application range, the density can be adjusted between 0.9 g / cm < 3 > and 2.2 g / cm < 3 >, and the strong-plugging oil-based drilling fluid has relatively good rheological property, suspension stability and filter loss control capability in a range of 60-170 DEG C and can be applied to shale gas drilling construction of a fractured formation.

The invention belongs to the technical field of battery manufacturing, and particularly discloses a method for rapidly testing the stability of lithium ion battery slurry, which comprises the following steps: adding a solvent into the slurry after slurry mixing, diluting through primary centrifugation, stopping suspension when the suspension appears, and then reducing the rotating speed for secondary centrifugation; and respectively testing and drawing kinetic index TSI curves of the mixed slurry and the slurry subjected to secondary centrifugation, and comparing the two curves to judge the stability of the slurry. The time for judging the stability of the lithium ion battery slurry can be shortened, the operation is simple, and the practicability is high.

The invention discloses a low-cost temperature-resistant quick-drying polyether solvent adhesive and a preparation method thereof, and belongs to the field of polyurethane adhesives for composite flexible packages. The solvent type adhesive is prepared by mixing a component A and a component B according to a weight ratio of 1: (0.8-1.2), wherein the component A is hydroxyl-terminated resin obtained by carrying out polymerization reaction on a mixture of polyester polyol and polyether polyol and isocyanate; and the component B is isocyanate-terminated resin obtained by carrying out polymerization reaction on a mixture of two polyether polyols and isocyanate. By adjusting the proportion of polyester and polyether in the component A and the proportion of polyether polyol with different molecular weights in the component B, the temperature required for reaction of the component A and the component B is low, the reaction speed is high, the crosslinking degree of an adhesive film after reaction is high, and the polyether adhesive can be cured at low temperature, and is short in curing time and good in heat resistance.

The invention provides an iron ore filling system. The iron ore filling system comprises a conveying module, a thickening module, a water supply metering module, a cement supply module, a stirring module and a control module. The conveying module is composed of a conveying pipeline, a valve and a spiral conveyor. The thickening module is composed of a deep cone thickener; the water supply metering module comprises a slurry making pump, an overflow water pipe, a slurry making water pipe and a flow meter; the cement supply module is composed of a cement bin and further comprises a tailing slurry pipeline. The stirring module comprises a stirring bin; the deep-cone thickener is additionally arranged and used for thickening tailing slurry, so that the concentration of underflow is increased, the concentration of filling slurry is improved, the quality of a filling body is guaranteed, the influence of mining on the surrounding environment is reduced, the safety of underground operation is improved, and precious mineral resources are recycled to the maximum extent; the problems of collapse and ground pressure caused by the goaf are solved.

The utility model discloses a kind of thickening and filtrating device of crystal slurry, including self-cleaning filter, cyclone, crystal slurry tank, refrigeration crystallizer and refrigeration mother liquor tank, wherein, the discharge port of refrigeration crystallizer is connected with the feed inlet of cyclone, cyclone is used to concentrate crystal slurry, the underflow outlet of cyclone is connected with the feed inlet of crystal slurry tank, the top flow outlet of cyclone is connected with the feed inlet of self-cleaning filter, self-cleaning filter is used to filter part top flow liquid discharged in cyclone, the blowdown of self-cleaning filter and the overflow of crystal slurry tank are connected with the feed inlet of refrigeration mother liquor tank respectively.The device of the utility model has small floor area and low operating cost.

The utility model discloses a terminal outlet structure of an inner lifting pipe. The terminal outlet structure comprises an inner lifting pipe barrel body, an inner lifting pipe end socket, a sprue spreader and a partial cone body outlet square box, the inner lifting pipe end socket is fixedly connected to the top of the inner lifting pipe barrel; the sprue spreader is fixedly connected into the top side of the inner lifting pipe barrel; and the partial cone outlet square box is radially or tangentially arranged outside the top side of the inner lifting pipe barrel. The inner lifting pipe is simple, reliable and economical in structure, oil gas and a catalyst are rectified through an inclined divergent flow channel formed by the inner lifting pipe barrel, the inner lifting pipe top spure spreader and the partial cone body outlet square box and then enter the coarse cyclone separator slowly, a medium flow field is greatly optimized and relieved, and the separation efficiency is improved. The situation that too much catalyst fine powder is formed due to beating and breaking of the catalyst in the sudden change of the flow field of the flow channel is avoided, the possibility is provided for reducing the solid content in the oil slurry, and then the service life of the oil slurry pump can be ensured.

The application relates to a YAG / Yb:YAG / YAG composite laser transparent ceramic and a preparation method thereof. The Yb:YAG water-based ceramic ink comprises mixed powder composed of Al2O3 powder, Y2O3 powder and Yb2O3 powder, the solid content is 20-25 vol%, the mole ratio of Al2O3, Y2O3 and Yb2O3 is 5:3-x:x, and 0 < x <= 0.3; the dispersant content is 0.2-0.8% of the mass of the mixed powder; the pH control agent is used in an amount controlled to adjust the pH of the Yb:YAG water-based ceramic ink to be between 10-11.5 and the pH of the ink is greater than or equal to 9.5 within 24 hours under the conditions of sealing and 20-25 DEG C; the humectant content is 5-20% of the total volume of the Yb:YAG water-based ceramic ink; the binder content is 0.1-0.5% of the mass of the mixed powder; and the sintering aid content is 0.1-0.5% of the mass of the mixed powder.

This invention discloses a load 32 The preparation method of the ultrathin sheet-like chitosan hydrogel applicator of P includes: (1) preparing a chitosan aqueous solution; (2) adding methacrylic anhydride to the chitosan aqueous solution to obtain methacrylated chitosan; (3) preparing a methacrylated chitosan aqueous solution; (4) adding 2-hydroxy-4′-(2-hydroxyethoxy)-2-methylphenylacetone to the methacrylated chitosan aqueous solution to obtain a chitosan hydrogel precursor solution; (5) coating the inner wall of a polytetrafluoroethylene mold with a superhydrophilic coating; (6) adding Na2H 32 PO4 aqueous solution and chitosan hydrogel precursor solution are added to the mold, stirred and then cured by light; (7) the cured hydrogel is taken out and sealed between two layers of transparent tape. This application can prepare an ultra-thin hydrogel applicator, thereby reducing the obstruction of radiation by the hydrogel material itself and enhancing the therapeutic effect of the applicator.

The invention provides a stable and efficient phosphorus reduction process treatment method, and relates to the technical field of wastewater phosphorus reduction. The method specifically comprises the following steps: firstly, carrying out primary treatment: introducing the phosphorus-containing wastewater into a primary reaction tank, and adding a primary metal salt solution into the primary reaction tank for reaction; after the reaction, the wastewater flows to a first-stage flocculation basin, and a flocculant solution is added into the first-stage flocculation basin for a flocculation reaction; finally, the wastewater flows to a sedimentation tank to be subjected to sedimentation separation to obtain primary treated wastewater; introducing the first-stage treated wastewater into a second-stage reaction tank, and adding a second-stage metal salt solution into the second-stage reaction tank for reaction; after the reaction, the wastewater flows to a second-stage flocculation basin, and a flocculant solution is added into the second-stage flocculation basin for a flocculation reaction; finally, the wastewater flows to a sedimentation tank to be subjected to sedimentation separation to obtain treated wastewater. The phosphorus content, the solid content and the content of magnesium ammonium phosphate which is not easy to degrade in the obtained treated wastewater are relatively low, and an excellent effect is achieved.

This invention discloses a flash deodorization method for lanolin, belonging to the field of lanolin refining technology. The method includes: S101: dissolving crude lanolin in 4-6 times its volume of anhydrous hot ethanol, then sending it to the upper part of a vacuum flash evaporator and spraying it downwards; S102: introducing hot nitrogen gas at a temperature of 95-105℃ into the lower part of the vacuum flash evaporator, with the nitrogen gas in countercurrent contact with the crude lanolin spray solution; S103: after circulating and spraying the crude lanolin in the vacuum flash evaporator for a certain period, sending it to a first oil-water separator for cooling, separating the ethanol to obtain lanolin. The exhaust gas from the vacuum flash evaporator is sequentially sent to a power wave tower, a condenser, a gas-liquid separator, and a vacuum device; anhydrous ethanol is circulated and sprayed in the power wave tower, with the spray solution temperature at 45-50℃. This patented method can deodorize lanolin to odorless levels and also has the advantages of significantly reducing color and achieving a high yield.

The utility model relates to sewage treatment equipment of an aerobic biological fluidized bed, which belongs to the technical field of sewage treatment and comprises the aerobic biological fluidized bed which is of a hollow tank body or cylindrical structure and is internally provided with a hydrophilic microbial carrier; a sieve tray is arranged at the bottom of the aerobic biological fluidized bed, and a flow stabilizing cylinder is arranged at the upper part of the aerobic biological fluidized bed; the flow stabilizing cylinder comprises a straight cylinder section and a big-end-down horn cylinder connected to the lower portion of the straight cylinder section. A settling chamber is formed by the guide cylinder and the outer wall of the horn-shaped cylinder; a sludge return channel is reserved between the bottommost end of the horn and the bed wall of the aerobic biological fluidized bed, and the size of the sludge return channel is smaller than the diameter of the hydrophilic microbial carrier; a gap is reserved between the guide cylinder and the steady flow cylinder, and an interception net is arranged in the gap; the reactor disclosed by the utility model has the characteristics of high volume load, small occupied area, large biomass, impact load resistance and no loss of filler carriers and microorganisms.

The present invention relates to a P-zone conductive paste for an xBC battery, comprising the following components: 83-86wt% silver powder, 3-7wt% glass powder, 0.5-3.5wt% aluminum powder, 0.5-3wt% additive, and the balance being an organic carrier; the silver powder is a mixture of at least two of micron-grade spherical silver powder, nano-grade spherical silver powder, and flaky silver powder, and the nano-grade spherical silver powder accounts for no more than 20% of the total mass of the silver powder. The present invention also relates to a method for preparing the conductive paste, and an electrode and a battery based on the conductive paste.

The utility model discloses a kind of grinding oil filter based on hierarchical filtration and collaborative linkage composite system, the utility model relates to grinding oil filter processing technical field, the utility model, including: primary filter device, the top of the primary filter device is fixedly connected with intermediate processing device by bolt, the top of the primary filter device is fixedly connected with multistage precision filter by bolt;By setting vacuum paper tape filter and filter paper cooperation, utilize low flow rate, high vacuum degree forms deep filtration, high -efficiently removes large particle impurity, greatly reduces solid content, reduces subsequent processing load, prolongs the life of precision filter element, intermediate processing device is cooperated by oil-gas separation type vacuum tank, heater and vacuum pump, dehydration and degassing, avoid oil emulsification and oxidation metamorphism, improve oil stability, multistage precision filter ensures that final oil cleanliness reaches NAS6 level, satisfies the purpose of high-precision grinding demand.

According to the solid-containing oil product separation and purification process and the separation and purification process system provided by the invention, the solid-containing oil product is treated by adopting the scheme of the invention, so that materials can be effectively separated, and the solid content in the separated clear liquid is reduced. The process comprises the following steps: (1) mixing and dissolving a solid-containing oil product and a composite solvent in a dissolving unit to obtain a dissolved material, the composite solvent comprising wash oil and light oil with a distillation range of 200-300 DEG C; (2) feeding the dissolved material into a centrifugal device of a separation unit, and centrifuging to obtain a centrifugal clear liquid and a centrifugal dry phase; the centrifugal clear liquid is fed into a filtering device of the separation unit to be filtered, and filtered clear liquid and concentrated liquid are obtained; and (3) carrying out flash evaporation treatment on the filtered clear liquid and the concentrated liquid in a flash evaporation unit respectively as flash evaporation feed liquid.

This invention provides a method for the resource utilization of potassium-containing metallurgical solid waste. The method comprises seven steps: ash transportation and storage, pulping, leaching, filtration, carbon removal, water treatment, water storage, and irrigation. This invention achieves a potassium removal rate of over 95% and a sodium removal rate of over 89% after treating the potassium-containing metallurgical solid waste. The leaching residue is recycled in the sintering process of the metallurgical industry, reducing the alkali content of the sintered ore, improving the efficiency of blast furnace ironmaking, and realizing the low-cost recovery and effective utilization of potassium resources from potassium-containing metallurgical solid waste.

The utility model provides a horizontal type laminated rolling spiral separator, and relates to the technical field of breeding manure treatment equipment. The device comprises a laminating and rolling device, a spiral extrusion discharging device, a self-cleaning system and a control system. The device is mainly used for treating high-viscosity manure and biogas slurry, the manure enters the laminating and rolling device and is laminated and rolled by the compression roller Aa, the extrusion roller Bb, the extrusion roller Cc and the extrusion roller Dd to complete primary solid-liquid separation, the separated manure residues are conveyed to the spiral extrusion discharging device through the spiral discharging device to be further subjected to solid-liquid separation, and finally ideal secondary filter residues are obtained. The laminating and rolling device comprises a belt type conveying filter screen, and guide limiting assemblies are arranged on the two sides of the belt type conveying filter screen, so that deviation of the belt type conveying filter screen can be prevented, and excrement can be effectively prevented from overflowing from the two sides. The self-cleaning system is automatically started and stopped through the control system, so that the blockage probability of the belt type conveying filter screen is effectively reduced, and efficient operation of the device is ensured. The device is reasonable in design, high in solid-liquid separation efficiency, convenient, practical and high in generalizability.

The invention provides a method for producing a high-yield clean aromatic-rich raw material, the clean aromatic-rich raw material and a system for producing the high-yield clean aromatic-rich raw material, in the method, atmospheric and vacuum distillate oil is added into catalytic slurry oil, so that not only can a dilution effect be achieved, but also a dissolution effect can be achieved, and after the catalytic slurry oil is dissolved, the high-yield clean aromatic-rich raw material is obtained. Solid particles adsorbed on aromatic-rich components, colloid and asphaltene in the catalytic slurry oil are dissolved and dispersed, filtering is easy, light components and concentrated aromatic-rich components can be removed through subsequent distillation of solid-removed slurry oil, and the finally obtained clean aromatic-rich raw material is low in solid content and high in aromatic hydrocarbon content by combining the steps of hydrofining and the like. The catalyst can be used as a raw material for producing mesophase pitch or petroleum coke or chemical products. The method for producing the high-yield clean aromatic-rich raw material provided by the invention has no limitation on solid particles and the content of the solid particles in the oil slurry, and also can be used for processing catalytic oil slurry of a high-solid and high-viscosity system.

The present invention discloses a high-nickel large-particle ternary precursor and a preparation method thereof, belonging to the technical field of lithium-ion batteries. The ternary precursor has a chemical formula of Ni x Co y Mn (1‑x‑y) (OH)2, where 0.90 ≤ x < 0.98 and 0 < y < 0.05. The D50 of the high-nickel large-particle ternary precursor is 14 - 16 μm, the specific surface area is 23 - 40 m 2 / g, and the tap density is 1.7 - 2.1 g / cm 3 . The primary particles of the high-nickel large-particle ternary precursor are slender, and the secondary particles are loose and porous. The length of the primary particles ≥ 600 nm, and the diameter of the primary particles ≤ 31 nm. The high-nickel large-particle ternary precursor of the present invention has a large specific surface area, a high tap density, slender and small-sized primary particles, loose and porous secondary particles, and high overall consistency. When preparing the cathode material, it can effectively improve the electrochemical performance of the cathode material.

The utility model provides a rotational flow damping type filter. The rotational flow damping type filter comprises a base; the barrel is arranged on the base and used for containing liquid to be filtered, and the bottom of the barrel is connected with a slag storage hopper; the liquid outlet is connected to the top of the outer side wall of the barrel, a filter screen is arranged at one end of the inner side of the liquid outlet, and the liquid outlet is used for outputting filtered liquid; the liquid inlet is connected to the upper part of the outer side wall of the cylinder body, is positioned below the liquid outlet, is tangent to the cylinder body, and is used for inputting liquid to be filtered into the cylinder body and forming rotational flow; the multiple damping baffles are arranged on the lower middle portion of the inner side wall of the barrel in a circumferential array mode, located below the liquid inlet and used for enabling solid particles in the liquid to be filtered to slide down to the slag storage hopper along the damping baffles, the multiple damping baffles are obliquely arranged in the flowing direction of rotational flow, and the width of each damping baffle is gradually increased from top to bottom. The rotational flow damping type filter is simple in structure, convenient to assemble, good in filtering effect, low in operation and maintenance cost and long in service life.

The utility model discloses a terminal outlet structure of an inner lifting pipe. The terminal outlet structure comprises an inner lifting pipe barrel body, an inner lifting pipe end socket and a regular cone outlet square box, the inner lifting pipe end socket is fixedly connected to the top of the inner lifting pipe barrel; and the regular cone outlet square box is radially or tangentially arranged outside the top side of the inner lifting pipe barrel. The device is simple, reliable and economical in structure, oil gas and a catalyst enter the coarse cyclone separator slowly after being rectified by the inclined divergent flow channel formed by the inner lifting pipe barrel and the regular cone outlet square box, a medium flow field is greatly optimized and relieved, excessive catalyst fine powder formed by beating and breaking of the catalyst due to sudden change of the flow field of the flow channel is avoided, and the service life of the catalyst is prolonged. And the possibility of reducing the solid content in the oil slurry is provided, so that the service life of the oil slurry pump can be ensured.

The invention discloses a method for recovering D-psicose crystals from syrup, belongs to the technical field of D-psicose crystallization, and optimizes the crystallization process parameters of D-psicose by using SAS company's JMP software for experimental design (design of experiment, DOE), deeply analyzes the influence of crystallization process parameters on crystallization yield, and establishes a crystallization yield prediction model, thereby accurately controlling the crystallization process. The crystallization yield of D-psicose according to the present invention is increased from 81%% to 91.36% (the highest crystallization rate published by existing data); and the obtained D-psicose crystals are uniform in size, smooth in surface, and have a relatively regular long rod shape with high quality; at the same time, the method also establishes a prediction model for crystallization rate, which can provide guidance for crystallization parameter control in subsequent large-scale production.

The utility model relates to a device for increasing the recovery concentration of sulfuric acid process titanium dioxide waste acid. The device comprises a natural settling tank, a waste acid pump, a precise waste acid filter, a titanium dioxide material recovery tank and a waste acid recovery tank, the precise waste acid filter is arranged on one side of the natural settling tank; the liquid outlet side of the middle part of the natural settling tank is connected with the feeding side of the precise waste acid filter through a waste acid pump; the titanium dioxide material recovery tank and the waste acid recovery tank are respectively arranged below the natural settling tank and the precise waste acid filter; the liquid outlet side of the top of the precise waste acid filter is connected to a waste acid recovery tank; and the bottom ends of the natural settling tank and the precise waste acid filter are respectively connected to a titanium dioxide material recovery tank. The waste acid recycling process does not need to use a flocculating agent, so that the production cost can be effectively saved; meanwhile, the concentration of the recycled waste acid can be effectively increased by 1-2%, the solid content after high-precision filtration of the waste acid is lower than 20 ppm, and the utilization cost and the utilization difficulty can be effectively reduced in the subsequent waste acid utilization process.

The invention relates to YAG / Yb: YAG / YAG composite laser transparent ceramic and a preparation method thereof. Wherein the adopted Yb: YAG water-based ceramic ink comprises mixed powder composed of Al2O3 powder, Y2O3 powder and Yb2O3 powder, the solid content is 20-25 vol%, and the molar ratio of Al2O3 to Y2O3 to Yb2O3 is 5: (3-x): x, 0lt; x is smaller than or equal to 0.3; the content of the dispersing agent is 0.2-0.8% of the mass of the mixed powder; the dosage of the pH control agent is controlled to adjust the pH of the Yb: YAG water-based ceramic ink to be 10-11.5, and the pH of the ink is greater than or equal to 9.5 within 24 hours under the conditions of sealing and 20-25 DEG C; the content of the humectant is 5-20% of the total volume of the Yb: YAG water-based ceramic ink; the content of the binder is 0.1-0.5% of the mass of the mixed powder; and the content of the sintering aid is 0.1-0.5% of the mass of the mixed powder.

The invention provides a low-solid-phase strong-inhibition calcium salt drilling fluid. Compared with the prior art, the low-solid-phase strong-inhibition calcium-based drilling fluid provided by the invention has the advantages that carbonate radicals and bicarbonate radicals can be neutralized in an alkaline environment through calcium ions Ca < 2 + >, so that the stability of the rheological property of the drilling fluid is ensured; meanwhile, Ca < 2 + > and clay particles generate an irreversible absorption effect, hydrated calcium silicate is formed on the surfaces of the clay particles, and ion exchange and adsorption both reduce the hydrophilicity and dispersity of the clay particles, so that hydration dispersion of the shale is inhibited, the content of bentonite in the system is low, the content of solid phases is low, the viscosity and the shearing force are relatively low, and the stability of the shale is improved. The drilling fluid has the function of containing a large amount of low-density solid phase capacity, good and stable rheological property of the drilling fluid can be ensured, the drilling fluid has strong inhibition and anti-sloughing functions, and the filter loss can be effectively controlled.

The invention discloses a radioactive slurry treatment system and method, and the system comprises a receiving device which is used for receiving radioactive slurry; the filtering and drying device is connected with the receiving device, the filtering and drying device comprises a filter and a dryer arranged on the filter, the radioactive slurry is filtered through the filter, and filter residues obtained through filtering in the filter are dried through the dryer; the first collecting device is connected with a filtrate outlet of the filter, and the first collecting device is used for collecting filtrate obtained by filtering; the second collecting device is connected with a discharging valve of the filter, and the second collecting device is used for collecting dry mud obtained after filtering and drying treatment; the filtering and drying device is arranged in the hot chamber, and the receiving device, the first collecting device and the second collecting device are arranged outside the hot chamber. The solid content in the liquid is reduced through solid-liquid separation, and the cement is solidified after the waste liquid is concentrated; compared with a mud-water mixed state, the water content of a filtered filter cake is reduced, and the mud treatment efficiency is improved.

The utility model discloses a polycrystalline silicon cold hydrogenation device which comprises a Venturi dust remover, a settling tank, a dust removal tower and a quench tower, the front end of the venturi dust remover is connected with the fluidized bed for discharging, and the rear end of the venturi dust remover is connected to the settling tank; the top of the settling tank is connected to the dust removal tower through a gas phase pipe, and the bottom of the settling tank is connected to a slag slurry treatment system through a slag discharge pipeline; the tower top of the dust removal tower is connected to the quench tower through a gas phase pipe, and the tower kettle of the dust removal tower is connected to a slag slurry treatment system through a slag discharge pipeline. The filler type rectifying tower is additionally arranged in front of the quench tower for dust removal, so that the solid content of a tower kettle of the quench tower can be effectively reduced, the pressure difference of a filter at an inlet of a tower kettle pump is reduced, the wear rate of silicon powder to a pipeline is reduced, and the parking risk caused by related faults of the tower kettle pump of the quench tower is reduced, so that the operation stability of the system is improved.

The invention provides an elastic acrylic emulsion with high color developing performance and a preparation method thereof, the elastic acrylic emulsion is prepared from the following raw materials in parts by mass: 90-210 parts of a water-based solvent, 100-360 parts of a polymeric monomer, 2-30 parts of a functional monomer and 0.5-9.5 parts of auxiliaries, and the auxiliaries comprise an emulsifier and an initiator; wherein the polymeric monomer comprises butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate and styrene, and the mass ratio of butyl acrylate to 2-ethylhexyl acrylate to methyl methacrylate to styrene is (6-15): (1-5): (1-6): (2-10); the functional monomer comprises at least one of a long-chain monomer and an amido monomer, the long-chain monomer is an alkenyl monomer with a main carbon chain comprising more than 9 carbon atoms, and the amido monomer further comprises alkenyl. The elastic acrylic emulsion has the advantages of being good in color contrast property, good in ductility and good in mechanical property.

The invention relates to a silicon oxide / silicon nitride acidic polishing solution based on a cerium oxide grinding material and a preparation method of the silicon oxide / silicon nitride acidic polishing solution. According to the polishing solution, a quaternary ammonium salt compound is used as an ionic active auxiliary agent, and the polishing rate of silicon oxide is improved and the polishing rate of silicon nitride is inhibited under the combined action of a small-particle-size cerium oxide abrasive, amino acid, a surfactant and the ionic active auxiliary agent under the acidic condition; and relatively low silicon oxide / silicon nitride surface roughness is obtained. According to the invention, the polishing rate of silicon oxide is more than # imgabs0 # imgabs1 #, the polishing rate of silicon nitride is less than # imgabs2 #, and the surface roughness of both silicon oxide and silicon nitride is less than 0.1 nm.

This application discloses a graded recycling and reuse system for demister flushing water, relating to the field of wet desulfurization. The system includes an absorption tower, a secondary recovery system, and a primary recovery system. The absorption tower is equipped with multiple demister mechanisms. The secondary recovery system includes a clarifier connected to the upper demister for clarifying low-solids-content water. Two second branches are formed at the clarifier's outlet; one branch discharges gypsum sludge settled at the bottom of the clarifier, and the other branch connects to the upper demister. The primary recovery system includes a hydrocyclone connected to the outlet of the lower demister. Two first branches are formed at the hydrocyclone's outlet; one first branch connects to the absorption tower to transport high-solids-content water, and the other first branch connects to the clarifier and merges with the rear end of the secondary recovery system. This application grades the effluent slurry from the upper and lower demisters, effectively improving clarification efficiency.