50results about How to "Avoid enrichment" patented technology

The invention relates to the technical field of hydrogen engines, in particular to a hydrogen internal combustion engine crankcase ventilation system, an engine and a hydrogen concentration control method. The crankcase ventilation system of the hydrogen internal combustion engine comprises a crankcase, a measuring part, an air supplementing part, a ventilation part and a control device, the crankcase comprises an air inlet and an air outlet, the measuring part is arranged in the crankcase, the air supplementing part comprises an air supplementing pump, the air supplementing pump is communicated with the air inlet, the ventilation part comprises an oxidation catalyst and a ventilation pump which are communicated in sequence, and the control device is arranged in the crankcase. The oxidation catalyst is communicated with the exhaust port and connected with a temperature control device, and in addition, the control device is electrically connected with the measuring part, the air supplementing pump, the ventilation pump and the temperature control device. According to the invention, the concentration and pressure of hydrogen in the crankcase are monitored in real time, and the gas supplementing pump, the ventilation pump and the temperature control device are adjusted according to the measurement result, so that the concentration of hydrogen in the crankcase is effectively controlled.

The invention relates to a rare earth element doped multiphase continuous silicon carbide ceramic fiber and a preparation method thereof.The preparation method comprises the steps of ceramic precursor preparation, melt spinning, air crosslinking, pyrolysis inorganic treatment and high-temperature ceramization. In the preparation method, heterogeneous metal elements, rare earth elements and boron elements are introduced through precursor synthesis; by combining air crosslinking, the sintering performance in the fiber is improved, the content of free carbon in the fiber is reduced, and the grain boundary composition and structure of the silicon carbide ceramic fiber are optimized. The prepared rare earth doped metal boride-containing multiphase silicon carbide ceramic fiber has excellent mechanical properties, high temperature resistance and oxidation resistance.

The invention discloses a steel slag oxygen-enriched coal gangue injection quenching and tempering and solid waste treatment synergistic method, and belongs to the field of solid waste treatment. Through cooperative treatment, different combustion-oxygen ratios are controlled in different stages, and the processes of further temperature regulation, tempering, standing self-settling separation, pouring out of low-density high-phosphorus slag and low-calcium slag at the upper part, and water feeding and slag flushing by using a heat preservation slag tank are carried out for water quenching treatment to obtain building material production raw materials, and high-density high-calcium slag and molten metal at the lower part are left; sending to a smelting furnace as a slag former and a smelting raw material. According to the method, two kinds of solid waste are solved at the same time, slag-metal separation is promoted, secondary oxidation loss of metal is avoided, and resource utilization of coal gangue components is achieved.

The invention provides a silicon-oxygen-carbon composite material as well as a preparation method and application thereof, the surface layer of a silicon-oxygen material of a bulk phase of the composite material is lithiated and reduced into silicon, meanwhile, a double-layer carbon structure ensures the conductivity of the material, a plasma carbon coating layer is formed on the surface of SiO by utilizing a PECVD (Plasma Enhanced Chemical Vapor Deposition) technology before pre-lithiation, and the conductivity of the material is improved. After pre-lithiation, a heteroatom porous carbon coating layer is constructed on the surface of the material, so that a surface conductive layer is kept in contact with the inside, and doping modification is realized while carbon coating is performed. According to the preparation method, the microstructure of the pre-lithiated SiO is optimized, the growth of silicon particles in the pre-lithiation process is reduced, a three-dimensional penetrating conductive network is formed by combining the external carbon layer and the internal carbon layer, a channel is provided for rapid transmission of lithium ions, the conductivity of the material is improved, and volume expansion is relieved. The preparation process is simple, the first efficiency of the material is high, the conductivity is good, and the cycle rate capability is good.

The present invention provides a fine-grained material wet screening device, comprising a main frame and a standard screen fixing device, wherein the standard screen fixing device is suspended on the main frame through a first spring, and the standard screen fixing device is connected to a vibration module through a connecting piece; a second spring is arranged below the vibration module, and a water tank is arranged below the standard screen fixing device; a material receiving device is arranged below the water tank, when wet screening is required, the material is placed on the standard screen in the standard screen fixing device, and then clean water is added to the water tank until the material in the standard screen is just covered, the screening time and the screening frequency are set on a numerical control device, and the screening is started, the vibration module not only vibrates in the horizontal direction, but also the standard screen vibrates up and down under the action of the first spring and the second spring, so as to avoid the fine-grained material from being enriched in a certain area on the standard screen, the fine-grained material is quickly screened, and the screening efficiency, screening effect and accuracy are improved.

The invention relates to the technical field of lithium ion batteries, in particular to a low-temperature high-power lithium ion battery. According to the scheme, a negative electrode material adopts a forged needle coke secondary particle graphite liquid-phase carbon coating design, and a coating layer capable of rapidly diffusing L < i + > is introduced on the surface of graphite, so that rapid transmission from the surface to the inside is achieved, and the lithium ion battery has high power; and moreover, a fast ion channel is strictly controlled by a coating material, so that the contents of impurities and foreign matters are controlled, a transmission channel of the L < i + > is prevented from being blocked, the rate and low-temperature high-rate discharge performance of the battery are improved, the fast charge-discharge capability of the battery is enhanced, and the requirement of high-power application in a low-temperature environment is met. By optimizing the electrolyte formula and the additive and the coating design of the modified negative electrode material, a stable solid electrolyte interface layer (SE I) film can be formed, unstable growth of the SE I film is inhibited, the cycle life of the battery is prolonged, and the safety is improved.

The application discloses a preparation method of a high-strength aluminum nitride substrate and relates to the technical field of aluminum nitride substrate preparation. The method comprises the following steps: preparing modified aluminum nitride powder; adding a non-oxygen composite sintering aid composed of fluorides and borides to the modified aluminum nitride powder to obtain a mixture; the adding amount of the composite sintering aid is 0.5wt%-5wt% of the total mass of the modified aluminum nitride powder; the mixture, a binder and a dispersant are mixed in a planetary ball mill to obtain a uniform slurry; the slurry is subjected to flow casting to form a green porcelain embryo, and then, glue removal treatment is performed under the protection of flowing inert gas to remove the binder; the green porcelain embryo after glue removal is placed in an atmosphere sintering furnace to perform a multi-stage temperature rising sintering procedure to form a ceramic body; and the sintered ceramic body is subjected to heat treatment and then cooled to obtain the aluminum nitride substrate. The application reduces the lattice thermal resistance of the aluminum nitride substrate and improves the mechanical strength of the aluminum nitride substrate.

The application discloses a kind of marine carbon fiber warp knits and its preparation method application, carbon fiber reinforced resin composite material, belong to carbon fiber composite material technical field, solve the problem of existing technology in the forming of ship large curved surface workpiece Fabric is easy to shrink, resin infiltration efficiency is low.The marine carbon fiber warp knits includes at least two carbon fiber yarn sheets, the carbon fiber yarn sheet is formed by carbon fiber yarn spread yarn flat cross section;At least two carbon fiber yarn sheets are stacked along the thickness direction, and the lay angle of adjacent carbon fiber yarn sheet constitutes asymmetric lay structure;The carbon fiber yarn sheet is stitched by warp knitting thread, and the stitching density of the warp knitting thread is 8-14 roots / inch.The marine carbon fiber warp knits can realize width variation <5mm, resin rapid and uniform infiltration, improve the forming quality and efficiency of ship large curved surface workpiece.

The invention relates to a bi-crosslinking cyanate ester-epoxy blended adhesive and a preparation method thereof, and relates to the technical field of high polymer materials, the adhesive comprises the following components in parts by weight: 45-85 parts of cyanate ester resin, 5-35 parts of epoxy resin, 0-20 parts of a reactive diluent, 2-6 parts of a bi-crosslinking curing agent and 0-50 parts of a functional filler, the bi-crosslinking curing agent has the following structure: R is alkyl, aliphatic amine or aryl; r'is a primary amino group and / or a secondary amino group, R ''is-C = N and / or-OCN, m is an integer from 1 to 3, and n is an integer from 1 to 2. By adding the double-crosslinking curing agent containing the amino group and the cyano group, the technical problems of high curing temperature, large stress after curing, poor temperature resistance of epoxy resin and the like of the existing cyanate ester resin system are solved, and the curing temperature, the bonding strength and the temperature resistance of the adhesive are balanced. The adhesive can be cured at the temperature lower than 90 DEG C, and has high glass transition temperature, low thermal weight loss and excellent adhesive property.

The invention belongs to the technical field of high-temperature alloy pipe preparation, and particularly relates to a precipitation strengthening type high-temperature alloy pipe and a preparation method thereof.The preparation method comprises the steps that a precipitation strengthening type nickel-iron-based high-temperature alloy pipe subjected to hot extrusion treatment is heated to 180-200 DEG C below the TiC phase precipitation temperature, then heat preservation is conducted for 3.0-3.5 h, rapid cooling is conducted after heat preservation is finished, and the precipitation strengthening type high-temperature alloy pipe is obtained; the temperature rise rate during heating is 12-15 DEG C / min; the precipitation strengthening type nickel-iron-based high-temperature alloy pipe subjected to high-temperature solution treatment is cold-rolled to the target size, and a cold-rolled pipe is obtained; the rolling deformation is 35%-40%; the cold rolled pipe is subjected to oil removal and drying; the cleaned cold rolled pipe is heated to 260-280 DEG C below the TiC phase precipitation temperature, then heat preservation is conducted for 2.5-3.0 h, air cooling is conducted after heat preservation is finished, the precipitation strengthening type high-temperature alloy pipe is obtained, and the temperature rise rate during heating is 10-12 DEG C / min. The method can solve the problem that in the prior art, no method is suitable for eliminating the Ti-rich phase on the inner wall of the ferro-nickel high-temperature alloy pipe, and the surface quality problem caused by the method is solved.

The invention discloses a method for inhibiting formation of floating anode slime by regulating and controlling components of a copper anode plate in copper electrolytic refining, which comprises the following steps of: adding trace elements such as silver, selenium and tellurium into the copper anode plate to optimize electrochemical behaviors and impurity precipitated phases of an anode boundary in the copper electrolytic refining process; according to the invention, impurity elements such as arsenic, antimony, bismuth and the like in the electrolyte are promoted to form large-particle anode mud for sedimentation, the adsorption of floating anode mud on the surface of cathode copper is avoided, the production pressure of a copper electrolyte purification process is reduced, and the added elements can form circulation in a copper smelting system and cannot influence a copper smelting main system. According to the method, the capacity release of the copper electrolytic refining liquid purification process is realized at a relatively low cost, and the quality of cathode copper is improved.

The invention provides lightweight high-strength ceramsite and a preparation method thereof, and the lightweight high-strength ceramsite is prepared from the following raw materials in parts by weight: 30-45 parts of sulfonated water-based drilling cuttings, 3-9 parts of lignin, 0.3-0.9 part of a nano titanium dioxide photocatalyst, 10-25 parts of alumina tailings, 5-15 parts of red mud and 10-25 parts of fly ash. According to the lightweight high-strength ceramsite and the preparation method thereof, sulfonated water-based drilling cuttings and other industrial solid wastes are treated in a maximized, harmless and resourceful manner, and a lightweight high-strength ceramsite product is obtained.

The novel waste heat recovery device comprises a waste heat recovery structure, a high-temperature section, a medium-temperature section and a low-temperature section are arranged in the waste heat recovery structure, each section is provided with a high-temperature section maintenance door, a medium-temperature section maintenance door and a low-temperature section maintenance door which correspond to each other, and the three maintenance doors are fixed to the side face of the waste heat recovery structure through bolts. A waste residue collecting box is arranged below the filtering section, an exhaust pipe is arranged above the left side of the filtering section and the smoke inlet, and a drainage pipe is arranged below the right side of the waste heat recovery structure. The heat recovery rate can be improved through three-section temperature-dividing gradient heat exchange, three maintenance doors are arranged, all the modules are treated respectively, maintenance is more convenient, a filtering layer can be cleaned at regular time through a filtering section and a waste residue collecting box, and the situation that dust is enriched, and the working efficiency is affected is avoided.

The invention relates to the field of hydrometallurgy, and discloses a vanadium slag calcified clinker acid leaching vanadium extraction and solution purification method which comprises the following steps: S1, carrying out first acid leaching on calcified vanadium extraction clinker, and adding an impurity removal agent in the later stage of first leaching to remove impurities P and Pb; s2, after the first-time leaching is finished, filtering and washing are conducted, and a first-time leaching solution, a first-time washing solution and first-time vanadium extraction tailings are obtained; s3, secondary acid leaching is conducted on the primary vanadium extraction tailings, filtering and washing are conducted after secondary leaching is completed, and secondary leaching liquid, secondary washing liquid and secondary vanadium extraction tailings are obtained; and S4, the primary leaching solution is used for subsequent vanadium precipitation, the primary washing solution serves as mother liquor of first-time acid leaching in the step S1, the secondary leaching solution is used for washing after first-time leaching in the step S2 is finished, and the secondary washing solution serves as mother liquor of second-time acid leaching in the step S3. The method is shorter in process, simple in process and small in vanadium loss, and the leaching yield of the calcified clinker is increased.

The invention discloses a nickel-copper-zinc ferrite material and a preparation method thereof. The nickel-copper-zinc ferrite material comprises a main material and a toughening additive, wherein in terms of the total molar weight of the main materials being 100%, the main materials comprise 34%-48% of Fe2O3, 10%-12% of NiO, 5%-6% of CuO and the balance ZnO; the toughening additive is at least one of 300 to 1500 ppm of V2O5, 300 to 1000 ppm of MoO3 and 300 to 1000 ppm of Nb2O5 based on the total weight of the main materials being 100%. The preparation method comprises the following steps: (1) weighing the raw materials; (2) mixing the main materials, adding water, sanding, adding a polyvinyl alcohol solution, and carrying out spray granulation; (3) presintering and cooling; (4) adding a toughening additive, and sanding; and (5) adding a polyvinyl alcohol solution, and carrying out spray granulation, pressing and sintering to obtain the product. The nickel-copper-zinc ferrite material disclosed by the invention has the advantages of high magnetic conductivity, high resistivity, high toughness and the like, and is suitable for being applied to a common-mode inductor of a network transformer.

The utility model provides a stripping tower for continuous production, which solves the problems of low production efficiency and unstable product quality of the existing stripping tower. Comprising a stripping tower body, the upper half section of the tower body is provided with a feed liquid inlet, and the lower half section of the tower body is provided with a steam inlet; a defoaming plate is arranged above the feed liquid inlet, a defoaming agent inlet and a liquid level sensor are arranged above the defoaming plate, the liquid level sensor is electrically connected with a defoaming agent control system, and the defoaming agent control system controls a defoaming agent to enter the defoaming agent inlet according to liquid level data of the liquid level sensor. The stripping tower is widely applied to the technical field of stripping tower equipment.

The present invention belongs to the technical field of industrial waste residue treatment, and discloses a pre-treatment method for sulfuric acid slag, wherein the pre-treatment method for sulfuric acid slag utilizes molten hydroxide to smelt sulfuric acid slag to remove oxides in the sulfuric acid slag; the method comprises: hydrothermally treating the sulfuric acid slag with molten hydroxide at a relatively low temperature; and removing the generated soluble salts by water washing and ultrasonic filtration. The present invention utilizes the low melting point of molten hydroxide to effectively remove oxides such as silicon, aluminum, zinc, and sulfur in the sulfuric acid slag at a relatively low temperature, thereby greatly achieving the enrichment of iron in the sulfuric acid slag. The sulfuric acid slag treated by the present invention has the characteristics of extremely low content of oxides such as silicon, aluminum, zinc, and sulfur, and the total iron content of the treated sulfuric acid slag is >60%.

This invention provides a solar-powered soil warming and air-source water self-irrigation device, belonging to the field of solar thermal utilization technology in agricultural facilities. This device can warm the planting soil when there is solar radiation and achieve air-source water self-irrigation when there is no sunlight. The device includes a solar concentrating unit, an evaporation and condensation unit, and a water collection unit. The evaporation and condensation unit includes a conical evaporation tube with evaporating liquid at the bottom. In use, the bottom of the conical evaporation tube is inserted into the planting soil. The solar concentrating unit is located at the head of the conical evaporation tube to reflect and focus sunlight into the tube. The inner surface of the tube is an internal reflective surface to reflect the sunlight into the evaporating liquid surface at the bottom. The water collection unit is located on the outer wall of the conical evaporation tube above the planting soil to collect condensate from the humid air inside the device, allowing the condensate to converge and flow downwards into the planting soil.

The application discloses a kind of high-efficiency continuous separation and purification device and process of crude adipic acid process, belong to chemical separation technical field.The process aims at solving the problems of low efficiency, discontinuity, high moisture content of product, impurities, large wastewater discharge and other problems existing in traditional segmented separation process.The core of this process is to use a set of sedimentation, filtration, washing function in one of the sedimentation filter centrifuge, and the crude adipic acid slurry is continuously and integrally processed, and low-moisture, low-impurity filter cake is directly obtained.Meanwhile, the separated mother liquor and washing water are innovatively introduced into a monobasic acid removal tower in parallel, and after removing impurities such as monobasic acid, the purified liquid is returned to the system for recycling.The application realizes the great simplification of process flow, the continuous automation of production process, the significant improvement of product quality and the internal circulation of resources, and is especially suitable for large-scale industrial application of adipic acid production.

The application discloses a kind of photocatalytic nanocomposite and its preparation method and application, belong to nanocomposite technical field, first synthesis CuInS2 quantum dot powder, a layer of carbon is covered on the surface of CuInS2 quantum dot powder, then amino is introduced by silane coupling agent modification, then modified carbon composite CuInS2 quantum dot powder is loaded on tubular carbon nitride powder formed.The tubular structure of tubular carbon nitride powder is conducive to CuInS2 quantum dot dispersion on its surface or inside, so that the active site of CuInS2 quantum dot powder is fully exposed, the band gap energy of CuInS2 quantum dot powder is about 1.53eV, when being irradiated, electron and hole pair can be generated, can promote the separation of photoinduced electron and hole to improve the activity of catalyst, and the dense carbon layer on CuInS2 quantum dot powder can form physical barrier to prevent peroxide from directly contacting with sulfur ion.

The invention provides an iron phosphate wastewater evaporation treatment system and an evaporation treatment method, and relates to the technical field of wastewater treatment. The system comprises an evaporation unit, a centrifugation unit and an oxidation sedimentation unit which are communicated in sequence, the evaporation unit is used for carrying out evaporation treatment on an iron phosphate wastewater concentrated solution to obtain a first treatment solution; the centrifugal unit is used for carrying out centrifugal treatment on the first treatment liquid to obtain second treatment liquid and ammonium sulfate salt crystals; the oxidation sedimentation unit comprises an oxidation subunit and a sedimentation subunit, the oxidation subunit is used for removing COD (Chemical Oxygen Demand) and / or chloride ions in the second treatment liquid to obtain a third treatment liquid, and the sedimentation subunit is used for neutralizing and settling the third treatment liquid to obtain ammonium sulfate bottom mud and a fourth treatment liquid; a communication pipeline is arranged between the oxidation subunit and the sedimentation subunit, a pipeline mixer is arranged on the communication pipeline, and the pipeline mixer is filled with a pH regulator. According to the system, COD and / or chloride ions in the waste liquid can be efficiently removed, and the quality of by-products is improved.

This application relates to the technical field of intelligent airflow control, and in particular to a dynamic optimization method for airflow organization in a clean operating room. Applied to an operating room containing an inner ring main air supply array, an outer ring auxiliary air supply array, and return air louvers, the method includes: when at least a portion of the movement vector points towards the operating table, and the corresponding movement speed is greater than a preset speed threshold and the area shrinkage rate is greater than a preset shrinkage rate threshold, suspending personnel position tracking air supply, marking the low-pressure wake zone, and executing the following: reducing the deflection angle of the guide vanes of the inner ring main air supply array to zero, simultaneously reducing the air supply volume of the outer ring auxiliary air supply array; controlling the outer ring auxiliary air supply array corresponding to the low-pressure wake zone to intercept air supply; increasing the opening of the return air louvers at the wall where each intercepted air supply falls, and decreasing the opening of the return air louvers at other walls. This application proactively abandons tracking through a three-level coordination mechanism, intervening in the flow field phase change conflict caused by transient convergence and dispersion to maintain the cleanliness of the core area.

The application relates to the technical field of airflow intelligent regulation, in particular to a dynamic optimization method for airflow organization of a clean operating room, which is applied to an operating room comprising an inner ring main air supply array, an outer ring auxiliary air supply array and a return air louver, and comprises the following steps: when at least part of the moving vectors are directed to an operating bed, and the corresponding moving speed is greater than a preset speed threshold value and the area shrinkage rate is greater than a preset shrinkage rate threshold value, personnel position tracking air supply is paused, a low-pressure wake area is marked, and the following steps are performed: the deflection angle of the guide vane of the inner ring main air supply array is reset to zero, and the air supply amount of the outer ring auxiliary air supply array is simultaneously reduced; the outer ring auxiliary air supply array corresponding to the low-pressure wake area is controlled to perform interception air supply; the opening degree of the return air louver at the landing point wall surface corresponding to each intercepted air supply is increased, and the opening degree of the return air louver at the remaining wall surface is reduced. The application actively gives up the three-level cooperation of tracking, intervenes in the flow field phase change conflict caused by transient convergence and divergence, so that the cleanliness of the core area is maintained.

The invention discloses a method for synthesizing 2,4-dichloro-3,5-dinitrobenzotrifluoride. 2,4-dichlorotoluene and nitric acid / sulfuric acid are used as raw materials, and a continuous flow reactor is used to synthesize 2,4-dichloro-3,5-dinitrotoluene under the action of a catalyst. The obtained 2,4-dichloro-3,5-dinitrotoluene has a content of ≥99%, a conversion rate of >99%, and a yield of >90%. Waste sulfuric acid can be recycled after being pretreated. Compared with the existing technology, the method has fewer steps, a simple process, low energy consumption, high product quality, and significantly improved process cleanliness and intrinsic safety.

The invention discloses a preparation method of aluminum-doped small-particle-size cobalt carbonate, belongs to the technical field of lithium ion batteries, and solves the problems that the aluminum element in the existing aluminum-doped small-particle-size cobalt carbonate is easy to recrystallize and separate out, and the particle morphology is difficult to control. The preparation method comprises the following steps: preparing a cobalt-aluminum mixed solution, adding an NH4HCO3 solution into a reaction kettle to serve as a base solution, starting the reaction kettle for heating, adding the cobalt-aluminum solution and the NH4HCO3 solution for precipitation reaction until the particle size D50 of aluminum-doped cobalt carbonate reaches 3.7-3.8 mu m, ending the first reaction and the second reaction until the particle size of the material in the reaction kettle grows to 4.0-4.5 mu m, ending the second reaction, and cooling to room temperature to obtain the cobalt-aluminum composite material. And carrying out a third reaction until the particle size of the aluminum-doped cobalt carbonate grows to 4.0-5.0 [mu] m, washing, and drying to obtain the aluminum-doped small-particle-size cobalt carbonate. The method is convenient to operate and stable in reaction, cooperative control over distribution uniformity and structural integrity of the aluminum element in the aluminum-doped small-particle-size cobalt carbonate particles is ensured, hydrolysis and recrystallization are avoided, and no aluminum segregation substance exists on the surfaces of the aluminum-doped small-particle-size cobalt carbonate particles.

The invention provides a silicon carbide reinforced beryllium-aluminum alloy material and a preparation method thereof, and belongs to the technical field of alloy material preparation, the preparation method comprises the following steps: loading a beryllium cast ingot and an aluminum block into an alumina crucible, and sequentially carrying out vacuum induction melting, pre-alloying and surface impurity removal; the pre-alloy with surface impurities cut off is loaded into an alumina crucible, vacuumizing is conducted till the pressure is 1 * 10 <-2 > Pa or below, the temperature is increased to 1400-1550 DEG C, silicon carbide particles are added, the alumina crucible is smelted in a tilting mode till the raw materials are completely melted, the raw materials are fully mixed to be uniform, and molten liquid is obtained; and the mold shell is preheated, in the vibration process of the mold shell, molten liquid is cooled and then poured into the preheated mold shell, argon is introduced to the normal pressure, a furnace door is opened, and the mold shell is taken out to be cooled to the room temperature in an air cooling tower. A casting made of the silicon carbide reinforced beryllium aluminum alloy material is good in internal quality, high in tensile strength, high in heat conductivity, good in corrosion resistance, good in heat stability and low in cost.

The utility model discloses a sludge wet oxidation waste gas soil filter treatment device which comprises a spray absorption unit, a biological soil filter unit and a waste gas collection and exhaust unit, the spraying absorption unit performs reverse heat and mass transfer on waste gas to be treated and an intermediate medium in a spraying tower, the waste gas subjected to heat exchange enters the biological soil filter tank unit, is subjected to microbial decomposition through a filter tank filler layer and an active soil layer, is collected by a transparent collection cover of the waste gas collection and exhaust unit, and is subjected to high-altitude up-to-standard emission. The waste gas treatment device is low in waste gas treatment cost, simple, stable and reliable; the transparent collecting cover is made of a light-transmitting material, so that photosynthesis of herbaceous plants can be maintained, and strain loss caused by rain wash can be prevented; and the waste gas collection and exhaust unit is used for organized emission, so that enrichment of organic matters in a factory environment is avoided. The device combines spraying and biological soil filter unit treatment processes, achieves up-to-standard emission of waste gas, and guarantees long-term stable operation of the system.

The invention discloses a method for recycling converter steel slag, which comprises the following steps of: mixing high-alkalinity steel slag with multi-source solid waste to react according to different alkalinity of converter hot-state steel slag, so as to obtain phosphorus-free slag, high-chlorine slag and ferrophosphorus slag which are in a solid solution state and are mutually layered; and then the components can be respectively circulated to corresponding working procedures of steel production for absorption. The low-alkalinity steel slag is subjected to cooling, crushing and acid leaching, the obtained iron slag is returned to be sintered for absorption, and the leachate is subjected to micro-electrolysis, oxidation and precipitation treatment and then is respectively recovered to obtain iron phosphate and calcium chloride products, so that zero discharge of wastewater is realized. According to the method, the steel slag is subjected to quality-divided treatment according to different alkalinity of the converter hot steel slag, so that the harmless treatment effect of the steel slag is improved, the discharge amount of the steel slag is greatly reduced, the method is environment-friendly and low in treatment cost, and synergistic efficient treatment of different steel slag, steel mill solid waste and waste acid is realized through a simple and easy-to-operate process; waste gas emission is little, no waste water is discharged, the required raw materials are solid wastes generated in the iron and steel industry, the overall treatment cost is low, and the method is environment-friendly.

The invention relates to a bubble water concentration detection device and a detection method, the bubble water concentration detection device comprises a shell, the interior of the shell is hollow, a cavity is formed, and the shell is provided with a water inlet and a water outlet which are communicated with the cavity; the detection sensor is restrained in the cavity and is used for directly or indirectly detecting the concentration of bubble water; the detection sensor is characterized by further comprising a movable part which is restrained in the cavity in a mode of reciprocating relative to the cavity so as to wipe the surface of the detection sensor. The device has the advantages that the surface of the detection sensor is wiped back and forth through the movable part, so that bubbles attached to the detection sensor are removed, the bubbles are prevented from being enriched on the surface of the detection sensor, and interference of the bubbles on the detection result of the detection sensor is eliminated. The two oppositely arranged electrode sensors are adopted as detection sensors, and the number of bubbles is calculated according to the resistance value of the detected water, so that the concentration of the current bubble water can be indirectly reflected, and the influence of impurities in the water on a detection result is eliminated.

The utility model discloses a vertical oil mist separation and collection device in the field of oil mist separation, which comprises a collection box, an oil collection funnel is arranged at the bottom of the collection box, an air inlet is arranged on the side surface of the oil collection funnel, an oil discharge outlet is arranged at the bottom of the oil collection funnel, a collection tank is correspondingly arranged below the oil discharge outlet, and an air outlet is arranged at the top of the collection box. A plurality of mounting openings are formed in the periphery of the device, a separator is detachably arranged corresponding to each mounting opening, each separator comprises a mounting plate and a baffle, an alpha angle is formed between each mounting plate and the corresponding baffle, and a supporting plate is arranged between each mounting plate and the corresponding baffle. The multiple baffles are distributed in a crossed mode to divide the inner cavity of the collecting box into a labyrinth type ventilation path. According to the utility model, the convenience of equipment installation and maintenance can be improved.