84results about How to "No output" patented technology

The invention belongs to the field of waste disposal in petroleum industry, and relates to an industrialization scale pyrolysis treatment system for oily sludge. The industrialization scale pyrolysis treatment system comprises a feeding pre-separation unit for performing secondary screening and solid-liquid separation on the oily sludge, a drying pyrolysis unit for performing drying and pyrolysis reaction on the oily sludge, a dust removal and condensation unit for performing dust removal and condensation on a pyrolysis gas mixture generated by the drying pyrolysis unit, and a discharge treatment unit which receives and treats separated substances of the other units respectively. Solid or solid-liquid mixed waste such as the oily sludge can be finally treated to achieve reduction, stabilization, harmlessness and recycling.

The invention belongs to the field of building heat-insulating materials, and particularly relates to a production method for a water-proof inflammable coal ash / metakaolin-based insulation board. According to the preparation method, aggregate is metakaolin and coal ash, and polymerization is performed under the activation of an alkali activator, so that the hydration reaction efficiency of a geopolymer is increased greatly; a foaming agent is aluminum powder, so that the decomposing rate and foam producing amount are increased greatly in an alkaline environment, cost is lowered, and high economic efficiency is achieved. A selected polystyrene material has high density, high heat-insulation efficiency and a good waterproof effect. Moreover, reaction conditions are relatively mild, a reaction is easy to control, operation is easy, and the whole process flow meets the requirement of environmentally-friendly production. The prepared heat-insulating material has the advantages of light weight, high strength, good heat-insulation effect, superior waterproofness and inflammability.

The invention discloses a dechlorination method of a zinc sulfate solution, which comprises the steps that sulfuric acid is added to a zinc sulfate solution containing 100-150g / L zinc and 0.5-5.0g / L chlorine; an acid solution with the sulfuric acid concentration of 20-75g / L is obtained; the acid solution is subjected to selective electrodialysis in four diaphragm electrolytic cells at a room temperature and at the current density of 50-200A / m<2>; a low-chlorine solution containing 0.1-0.3g / L chlorine and a high-chlorine solution containing 5-20g / L chlorine are obtained; the low-chlorine solution is used for producing electric zinc; the high-chlorine solution is subjected to chlorine precipitation by a cuprous chloride method; a chlorine precipitation solution containing 0.4-1.0g / L chlorine is obtained; zinc powder is added to the chlorine precipitation solution for replacing and removing copper; a copper removal solution containing 0.4-1.0g / L chlorine is produced; the copper removal solution is returned for acid addition, and subjected to the selective electrodialysis. With the adoption of the method, chloride ions in the zinc sulfate solution can be removed at low cost and high efficiency.

The invention discloses application of an OsAGO18 gene in improving the rice stripe disease resistance of rice, and provides application of an OsAGO18 gene, encoding protein of the OsAGO18 gene, or a recombinant carrier containing the encoding gene, in regulating and controlling rice stripe disease resistance of plants. The amino acid sequence of the gene OsAGO18 protein is specifically shown in the sequence 2 in a sequence table. The experiment shows that the plant disease resistance in rice with over-expression of the OsAGO18 gene is improved; on the contrary, the disease resistance of an ago18 mutant is degraded, which means that the OsAGO18 protein encoded by the gene plays an important role in rice stripe disease resistance of rice.

The invention related to an integrated ship waste gas dedusting and denitrifying system. The integrated ship waste gas dedusting and denitrifying system comprises a deduster, a combustion chamber, a particle treatment chamber and a denitrifying reactor, wherein the ship waste gas is sent into the deduster via a gas inlet of the deduster; a dust outlet of the deduster is connected with a dust inletof the particle treatment chamber; an urea solution spray gun is arranged in the combustion chamber; a gas exhaust port of the combustion chamber is connected with a gas inlet of the particle treatment chamber; a gas exhaust port of the particle treatment chamber and a gas exhaust port of the deduster are respectively connected with a gas inlet of the denitrifying reactor; a urea solution sprayedby the urea solution spray gun is decomposed into ammonia gas by high-temperature flue gas in the combustion chamber, and the high-temperature flue gas mixed with the ammonia gas is sent into the particle treatment chamber to combust and remove the dust particles collected by the deduster; the ammonia gas is mixed with the dedusted ship waste gas, and then the mixed gas is sent into the denitrifying reactor. The integrated ship waste gas dedusting and denitrifying system has the advantages that the concentration of waste gas particles at an outlet is controlled by the deduster; the urea solution is decomposed by the high-temperature flue gas to combust and remove the dust particles collected by the deduster, so that the dedusting and denitrifying are integrated, the treatment effect is good, and the cost is low.

The invention discloses an artificial floating bed system for purifying water quality by using superfine fibers. The artificial floating bed system comprises a floating bed, a planting basket, planting basket filler, floating bed plants, superfine fiber three-dimensional artificial waterweeds, a supporting frame, an aeration device, a microbial preparation and a box body. The invention also discloses a method for purifying water by using the system. The method comprises the following steps of: aerating and oxygenating sewage through micropores, and intercepting, adsorbing and decomposing pollutants in the sewage by a biological membrane attached to the superfine fiber three-dimensional artificial waterweeds in the superfine fiber artificial waterweed restoration area. Pollutants in the water body are absorbed, metabolized and decomposed by microorganisms at the roots of the plants and on the attached filler when flowing through the plant synergistic microorganism remediation area. A microbial agent is added, and microorganisms are used for effectively adsorbing, converting and degrading nitrogen and phosphorus in the water body, so that algae propagation is inhibited, and the waterbody is effectively purified. The artificial floating bed system has the advantages of readily available materials, low construction and operation costs, convenient manufacture, landscape beautification, water quality improvement, and good application prospect.

The invention discloses a method for treating high-iron and multi-metal zinc concentrate. The method comprises the following steps of: boiling and roasting zinc concentrate containing 14-20 percent of Fe, 0.03-0.10 percent of In, 0.2-0.6 percent of Cu, 0.2-0.6 percent of Cd, 0.005-0.02 percent of Ag. 0.1-0.2 percent of Sn and 40-50 percent of Zn to produce flue gas and a roasted product; preparing sulfuric acid by using the flue gas; blending the roasted product in a reducing agent to be reduced and smelted to produce a crude zinc alloy, crude silver-containing copper and furnace cinder; blowing the furnace cinder to obtain soot and blown furnace cinder, returning the soot to be reduced and smelted, and selling the blown furnace cinder; extracting copper and silver from crude silver-containing copper; enabling the crude zinc alloy to enter a conventional distillation tower for performing four stages of distillation to produce a pyrogenic process distilled zinc product, a crude cadmium product and a high-indium, tin and zinc alloy; extracting indium and tin from the high-indium, tin and zinc alloy. The method is reasonable in process, good in comprehensive recovery, high in production efficiency, low in product cost, and clean and environment-friendly in production process.

The invention discloses a method for preparing multiple products including hemicellulose, carboxylated cellulose nanocrystals, fibrils and citrate multicomponent products from fibers by using citric acid. The method comprises the following steps: with fibers as a base material, preparing hemicellulose through citric acid hydrolysis and alcohol precipitation, preparing citrate through crystallization, preparing cellulose nanocrystals through ultrasonic treatment and centrifugation, and preparing cellulose nanofibrils from solid fibers through homogenization. The method is friendly to environment, free of toxicity, low in risk, high in fiber component utilization rate, diversified in high-value products and high in yield. The prepared cellulose nanocrystals and cellulose nanofibrils have dispersion stability, excellent specific surface area and high carboxyl content, and lay a foundation for nanocellulose modification. Finally, prepared nanocellulose has no residual toxic and harmful substances, and has wide application prospects in the aspect of functional materials taking cellulose as a substrate, especially in the aspects related to health, such as biomedical materials, food, health care products, skin care cosmetics and the like.

The invention discloses a single crystal type IV-VI-VIII group lithium-rich disordered rock salt structure positive electrode material and a preparation method thereof. The general formula of the positive electrode material is Li<1+a>TiW<c>Ni<d>O<2>, wherein a is greater than 0.1 and smaller than 0.3, b is greater than 0.1 and smaller than 0.4, c is greater than 0.1 and smaller than 0.4, d is greater than 0.1 and smaller than 0.4 , and the sum of a+4b+6c+2d is equal to 3. The single crystal type material is composed of IV group elements, VI group elements and VIII group elements, is specifically composed of titanium of the IV group elements, tungsten of the VI group elements and nickel of the VIII group elements, and has a more stable three-dimensional disordered cation skeleton structure, a more complete crystal structure, higher compaction density and a smaller specific surface area compared with a traditional ternary lithium nickel cobalt manganate positive electrode material; and therefore, the material has good rate capability and cycle performance, and can be used in lithium ion batteries.

The invention relates to a low-grade lead-zinc oxidized ore resource utilization method and belongs to the field of lead-zinc oxidized ore resource comprehensive utilization. The method comprises thespecific technological steps of conducting crushing and ball milling on low-grade lead-zinc oxidized ores and then conducting bulk flotation to select lead-zinc concentrates and flotation tailings; conducting magnetic separation on the flotation tailings to enable the iron content of the tailings to be 3%-5% and obtaining iron ore concentrates and magnetic separation tailings; adding a finely ground reducing agent, limestone and shale to the magnetic separation tailings to be subjected to even mixing and pelletizing, and conducting lead-zinc reduction volatilization in a rotary kiln to obtainlead-zinc oxide smoke dust through a dust collection system; and feeding kiln slag into a cement kiln to be subjected to calcinating to obtain cement clinker. Through the low-grade lead-zinc oxidizedore resource utilization method, extraction of valuable metals of the low-grade lead-zinc oxidized ores and resource utilization and flotation of volatilizing kiln slag are implemented synchronously,the lead-zinc mixed concentrates and iron concentrates are obtained through flotation and magnetic separation, lead-zinc smoke dust is obtained through lead-zinc enrichment to serve as a raw materialfor lead-zinc metallurgy, cement is produced through reduction volatilization kiln slag calcination, and no waste residues are produced.

The invention discloses a hopper type plastic drying machine. The hopper type plastic drying machine comprises a drying room, a draught fan and an exhaust pipe, wherein a hopper is fixedly arranged on the center of the top end of the drying room, a discharge room is fixedly arranged on the center of the bottom end of the drying room, the draught fan is connected to the side of the lower end of the drying room, a connecting pipeline of the draught fan and the drying room is provided with an operation board and a heater, the exhaust pipe is connected to a portion of the broadside of the top end of the drying room, and an exhaust port of the exhaust pipe is provided with an air strainer. Through the arrangement, the hopper type plastic drying machine can sharply improve drying efficacy, improve quality of finished products, and generate no contaminated granules in the whole process.

The invention discloses a method for recovering platinum group metal from a waste catalyst through melt extraction vacuum distillation. A waste catalyst crushing material containing the platinum groupmetal and a reducing agent are fully mixed to obtain a melt extraction raw material; the melt extraction raw material and an extraction agent are subjected to melt extraction at a temperature higherthan the melting point of the extraction agent to obtain a low-melting-point alloy eutectic body and a solid catalyst carrier, wherein the extraction agent comprises a Pb single-element extraction agent, a Sb single-element extraction agent or a Bi single-element extraction agent or a two-element or multi-element mixed extraction agent containing two elements or above; and the low-melting-point alloy eutectic body is subjected to vacuum distillation to obtain a platinum group metal alloy and an extraction agent condensation product. According to the method, the platinum group metal in the waste catalyst is recovered by adopting the methods of the melt extraction and vacuum distillation, the extraction temperature is low, a slagging process of a conventional metal trapping process is avoided, the melting point of the extraction agent is low, the saturated vapor pressure is large, and vacuum distillation separation is easy, the extraction agent is recycled, the process is clean, efficient and energy-saving.

The invention relates to a high-yield rice planning method. A rice planting region, rice planting units, spray pipelines, water level monitors, microelement content detectors, a controller and a solar power generator are involved, wherein the rice planting units are arranged in the rice planting region, the spray pipelines are arranged along the peripheries of the rice planting units in the rice planting region, the water level monitors and the microelement content detectors are arranged in the rice planting units, the controller is used for receiving information sent by the water level monitors and the microelement content detectors, and the solar power generator is arranged in the rice planting region and used for supplying power to the controller, the water level monitors and the microelement content detectors. The invention provides the high-yield rice planning method, a spraying system is arranged on the periphery of rice, the water level of the rice can be controlled, and disinsection and fertilizer application can be carried out on the rice. In addition, the solar power generator is arranged and is capable of providing electric power support for operation of the whole device and convenient and easy to operate.

The invention discloses electromagnetic valve iron core and silica gel particle assembling equipment which comprises a machining platform, a material conveying mechanism, an iron core feeding mechanism, a silica gel particle feeding mechanism, a silica gel particle rotating disc and a CCD detecting and discharging mechanism are arranged on the machining platform, and an iron core grabbing station, an assembling station and a detecting and discharging station are arranged on the machining platform. The iron core feeding mechanism is arranged on the iron core grabbing station, silica gel particles on the silica gel particle feeding mechanism are carried to the silica gel particle rotating disc through the material taking assembly, the silica gel particle rotating disc is arranged on the assembling station, and the CCD detecting and discharging mechanism is arranged on the detecting and discharging station. The material conveying mechanism comprises a first divider, a connecting frame is connected to the output end of the first divider in a linkage mode, a plurality of connecting rods are arranged on the connecting frame in the circumferential direction, and each connecting rod is connected with a mechanical clamping jaw. The production efficiency is high, feeding is fast, damage is little, full inspection of the assembly form is achieved, and it is guaranteed that no unqualified product is output.

The invention discloses a preparation method of thiosemicarbazide molecular covalent grafted acrylic fiber. The preparation method includes: hydrolyzing acrylic fiber, generating carboxyl groups on the surface, allowing one ends of the small molecules of thiosemicarbazide and carboxyl groups on the surface of the hydrolyzed acrylic fiber form covalent bonds, and forming a stable structure on the surface of the acrylic fiber. The invention also provides thiosemicarbazide molecular covalent grafted acrylic fiber and its specific application. The preparation method is simple and convenient to perform; the prepared thiosemicarbazide molecular covalent grafted acrylic fiber has good performance and is worthy of popularization; the acrylic fiber has a wide range of origin, both the materials andmodifying drugs are nontoxic harmless articles; small-molecular compounds used herein are safe and harmless to human; the temperature condition required by reaction is every easy to implement, with no toxic products or byproducts produced; the preparation method is a novel synthetic method with good safety and environmental friendliness.

The invention discloses a method for preparing carboxylated nanocellulose by hydrolyzing citric acid under a high-pressure condition. According to the method, a bleached fiber pulp board serves as a base material, citric acid serves as hydrolysate, acid hydrolysis is conducted under high pressure, then cellulose nanocrystals are prepared through centrifugation, and cellulose nanofibrils are prepared from remaining solid fibers through a high-pressure homogenizer. The method is green, non-toxic, short in consumed time and high in yield, and the used citric acid is easy to recycle so that the preparation cost of the nanocellulose is reduced. Besides, the prepared carboxylated cellulose nanocrystals and cellulose nanofibrils have relatively high dispersion stability, excellent specific surface area and relatively high carboxyl content so that more chemical ways are provided for further modification of the nanocellulose. Finally, the prepared nanocellulose has no toxic and harmful substance residues so that the nanocellulose has a wide application prospect in the aspects of food emulsifiers, health care products, skin care products, medical materials and the like.

A data playback apparatus for playing back a recording medium in which a signal having digital watermark information embedded therein is recorded, the digital watermark information including copy control information, includes a reading unit, a signal detection unit, and a digital watermark information detection unit. The reading unit reads a signal from the recording medium. The signal detection unit determines whether or not the signal read by the reading means is the signal having digital watermark information embedded therein. When the start of the signal having digital watermark information embedded therein is detected by the signal detection unit, the digital watermark information detection unit detects the digital watermark information using the detected start as a trigger.

The invention discloses a treatment method of gold and silver pyrite, and belongs to the field of resource development and metal smelting. The method comprises the following steps: (1) performing oxidation smelting: performing oxidation smelting on the gold and silver pyrite to obtain high-temperature smoke, ferrous oxide melting slag and gold and silver sulfurous iron; (2) treating the high-temperature smoke: recovering after heat of the high-temperature smoke obtained by the step (1) to prepare sulfuric acid, wherein tail gas from acid production is discharged up to the standard; (3) treating the smelting slag: casting the ferrous oxide melting slag obtained by the step (1) into blocks, naturally cooling to obtain ferrous oxide slag blocks and selling; (4) converting the obtained gold and silver sulfurous iron obtained by the step (1) to obtain converting slag and gold and silver alloy, returning the converting slag to the step (1) for oxidation smelting together with the gold and silver sulfurous iron, and selling the gold and silver alloy. The method has the advantages of short process flow, small investment and land occupation, high production efficiency, low production cost, high gold and silver recovery rate, clean and environment-friendly production process and the like.

The invention provides an SBS elastomer environment-friendly runway and belongs to the technical field of plastic runways. The SBS elastomer environment-friendly runway comprises connecting nails and plastic elastic columns and further comprises an abrasion-resisting layer, a buffer layer, a priming coat, a first geotextile layer, a thin film layer and a second geotextile layer which are sequentially arranged from top to bottom. Inwards-sunken connecting holes are formed in the buffer layer, and the bottom diameters of the connecting holes are smaller than the top diameters of the connecting holes; the connecting nails sequentially penetrate into the buffer layer, the priming coat, the first geotextile layer, the thin film layer and the second geotextile layer, and the bottom ends of the connecting nails are inserted in a pure soil layer; and the plastic elastic columns are vertically arranged and penetrate into the first geotextile layer and the thin film layer. According to the SBS elastomer environment-friendly runway, the connecting nails are arranged so that the buffer layer, the priming coat, the first geotextile layer, the thin film layer and the second geotextile layer can be connected into a whole, use of glue is avoided, and the environmental friendliness of the runway is improved; and the runway is further provided with the plastic elastic columns, the negative impact of the connecting nails on the runway elasticity is eliminated, and the plastic pavement has appropriate elasticity accordingly.

The invention relates to the field of industrial waste gas purification, environmental protection and energy, and specifically relates to a system and method for relieving blockage of an air preheaterthrough catalytic oxidation of escaping ammonia. The system comprises a boiler and a chimney, wherein the boiler is connected with the chimney through a flue; an air inlet channel is further formed in the boiler; and the flue is connected with the air inlet channel through the air preheater. The system is simple in structure, ozone is sprayed into the flue through an ozone spraying device, a catalyst layer is combined, the ozone and the escaping ammonia in flue gas are removed, the amount of the sprayed ozone is that the molar ratio of the escaping ammonia in the flue gas located between an SCR denitration reactor and the catalyst layer is more than or equal to 3, the thoroughness of escaping ammonia removal is guaranteed, and therefore the escaping ammonia is efficiently removed, the pressure difference of the air preheater is prevented from being increased, and blockage of the air preheater is effectively relieved.

The invention provides a coal powder hydropyrolysis and gasification integrated system and a treatment method thereof. The system comprises a feeding unit, a reaction unit and a separation unit, wherein the reaction unit comprises a lifting pipe reactor and a gasification furnace; the separation unit comprises a gas-solid separation device and an oil-gas separation device. According to the coal powder hydropyrolysis and gasification integrated system, coal powder hydropyrolysis and gasification are coupled, so that graded transformation and comprehensive utilization of raw coal are realized, and the yield of a pyrolyzed oil product and the quality of the oil product are improved; meanwhile, internal circulation of materials in the system is realized and no byproducts are generated; the utilization rate of the materials and energy is effectively improved.

The invention belongs to the field of sewage treatment technologies and environment-friendly functional materials, and particularly relates to a Fe-Ni-Co composite Fenton-like catalyst and a preparation method thereof. A carbon-based material is used as a carrier, Fe, Ni, Co and other elements are loaded on the carbon-based carrier, and the prepared material is applied to a wastewater treatment system. When the concentration of a metal mixture is 0.01 M, the hydrothermal synthesis temperature is 160 DEG C and the high-temperature calcination temperature is 600 DEG C, the prepared Fenton-like catalyst has the best performance in the wastewater treatment process, the COD removal rate can reach 40%, and the Fenton-like catalyst has good stability.

The invention discloses a preparation method of cyclic sulfate. According to the preparation method, dialkyl sulfate serving as a raw material reacts with dibasic ester or cyclic carbonate to preparethe cyclic sulfate in one step. According to the method for preparing the cyclic sulfate in one step by adopting the dialkyl sulfate as the raw material is provided, noble metal catalysis is not needed in the preparation process, corrosive gas is not generated, no wastewater is generated in the post-treatment process, and the method is safer and more environmentally friendly.

The invention relates to a wheat malt biscuit and a making method thereof. Part of wheat flour is replaced by whole wheat malt flour, and the wheat flour and the whole wheat malt flour serve as main materials to make wheat malt biscuit, and meanwhile syrup, vegetable oil, baked milk powder, a leavening agent, shortening, eggs, salt, water and the like are added to serve as auxiliary materials. Thesurface of the wheat malt biscuit is in a convex pattern shape, a cross section organization structure is porous, and the biscuit has puffy taste. The part of wheat flour is replaced by the whole wheat malt flour, the dough shortness can be improved, the crispness of the short biscuit can be improved, and the processing problem of insufficient weak strength flour raw materials is solved. In addition, the added whole wheat malt flour can also remarkably increase the content of dietary fiber in the short biscuit, and accordingly the nutrition and function characteristics of the wheat malt biscuit are improved.

The invention discloses a dewatering water advanced treatment softening system and process. The process flow comprises the following steps: dewatering water from a mine, crystallizing and granulatinga fluidized bed, carrying out solid-liquid separation on the fluidized bed, and cleaning with a clean water tank. After being softened by the process, the total hardness of the water is effectively removed, the removal rate reaches 90%, the effluent turbidity is less than 5NTU, and the inflow requirement of the subsequent pre-desalination process is met. The system is high in equipment operation load, small in occupied area, compact in arrangement, easy to operate and adjust, stable in effluent quality, low in maintenance workload and high in automation degree. Compared with a traditional limeand soda ash softening process, the process has the advantages that the occupied area of a lime storage room is reduced, and the common problem of excessive addition of chemicals in lime treatment issolved; the problems of powder leakage, blockage and the like in the lime milk preparation process are eliminated, the operation site is pollution-free, and the management is convenient; calcium carbonate particles generated by crystallization and granulation can be recycled in a desulfurization system, so that the sludge output of the system is greatly reduced, and the operation cost is relatively low.

The invention discloses a fiber-based single frequency blue-light pulsed laser comprising a pumping source, a beam combiner, a broadband fiber grating, thermoelectric coolers (TEC), an input collimator, a nonlinear crystal, a temperature control furnace, an output collimator, a high gain ytterbium-doped fiber, a narrow-band polarization maintaining fiber grating, PZT piezoelectric ceramic and a dichroic mirror. According to the fiber-based single frequency blue-light pulsed laser provided by the invention, fundamental frequency laser in a single longitudinal mode (single frequency) and with a wavelength of 960-980nm can be achieved based on a short linear tone Q-modulation manner and an inner cavity frequency doubling structure. The two TECs are used for adjusting temperature in a segmented manner, and the PZT piezoelectric ceramic is used for stretching out and drawing back to accurately control wavelength matching shapes of a fiber grating pair, so that losses in a resonant cavity can be modulated, and thus output of Q-modulation single frequency pulse fundamental frequency laser is achieved; and then harmonic conversion efficiency and output power of frequency doubling blue light are improved via the nonlinear crystal with length in centimeters and the inner cavity frequency doubling structure, and finally output of the single frequency blue-light pulsed laser based on a fiber manner is achieved.

The invention discloses a large-power optical fiber-based single frequency pulse laser. The large-power optical fiber-based single frequency pulse laser comprises a pumping source, a beam combiner, a wideband fiber bragg grating, two thermoelectric coolers (TEC), an input collimator, a nonlinear crystal, a temperature controlling stove, an output collimator, a high-gain ytterbium-doped optical fiber, a narrowband polarization-maintaining fiber grating, PZT piezoelectric ceramic and dichroscope. According to the large-power optical fiber-based single frequency pulse laser, a single longitudinal mode (single frequency) fundamental frequency laser with the wave length ranging from 960 nm to 980 nm can be achieved on the basis of a short linear cavity Q-switch mode and an inner cavity frequency doubling structure. By means of the thermoelectric coolers (TEC), segmented temperature regulation is conducted, the PZT piezoelectric ceramic stretches out and draws back to precisely control the wavelength match state corresponding to the fiber bragg grating, internal loss of a resonant cavity can be modulated, and therefore Q-switch single frequency pulse fundamental frequency laser output is achieved; single frequency pulse laser output based on an optical fiber form is finally achieved by improving harmonic conversion efficiency and output power of frequency doubling blue light through a centimetre length nonlinear crystal and the inner cavity frequency doubling structure.

The invention discloses an aerogel composite coating and application thereof in an underground oil pipe, and belongs to the technical field of oil extraction in oil fields. The aerogel composite coating is prepared from 10 parts of silicon dioxide gel powder, 50-100 parts of waterborne epoxy resin, 10-20 parts of hollow glass beads, 5-10 parts of a surface modifier, 3-5 parts of a coalescing agent, 0.1-1.0 part of a leveling agent and 1-2 parts of an antifoaming agent. The aerogel composite coating is high in uniformity, good in film-forming property, capable of being coated outside an oil pipe, strong in adhesive force, capable of adapting to an underground oil-water environment for a long time, outstanding in heat preservation property and capable of obviously reducing the wax depositionphenomenon of the oil pipe.

The present invention provides a zero-discharge integrated treatment system. The system comprises: an oil removal unit, an air floatation turbidity removal unit, a phenol ammonia recovery unit, a biochemical unit, an ozone catalytic oxidation unit, a hardness and silicon removal unit, an ultrafiltration turbidity removal unit, a membrane concentration unit and a salt separation crystallization unit, which are connected in sequence. The invention also discloses a coal chemical industry wastewater zero-discharge integrated treatment method adopting the treatment system.

The invention relates to a navigation lock draining system with an independent porous diversion water outlet structure. The navigation lock draining system with the independent porous diversion water outlet structure effectively solves a plurality of technical problems. The navigation lock draining system is characterized by comprising a concrete floor distributed along the water flow direction, concrete lock piers and a draining opening structure segment close to one side of bed. The navigation lock draining system is characterized in that upland water is drained into an underwater bed from an approximately-Z-shaped water flow track; the water flow track sequentially comprises a main corridor of the floor, a 90-degree transition joining corridor, a valve corridor, an arc expansion segment turning corridor, and a ladder-shaped stilling pool; an outlet of the ladder-shaped stilling pool is joined with the underwater bed; the valve corridor is positioned in a lock pier close to the draining opening structure segment; a group of arc diversion piers are distributed on a junction of the arc expansion segment turning corridor and the ladder-shaped stilling pool along the water flow direction; a slanting ladder-shaped stilling baffle is arranged in the ladder-shaped stilling pool. The navigation lock draining system is suitable for construction of a navigation lock in projects of water conservancy and hydropower, and the like.