68results about How to "Avoid emissions" patented technology

The invention discloses a pig farm sewage treatment system and method, and belongs to the technical field of farm sewage treatment, the pig farm sewage treatment system sequentially comprises a water collecting tank, a dosing mixing tank, a solid-liquid separator, an adjusting tank, a HiRAD anaerobic device, a reaction sedimentation tank, a water quality adjusting tank, an SBR biochemical tank, a C-MBR biochemical tank, a disinfection tank and a reuse water tank; by means of the system and the method, sewage discharged by the pig farm through the liquid manure technology can be effectively purified, organic carbon in the sewage can be converted into methane to the maximum extent, the methane becomes a high-quality biomass resource, waste is turned into wealth, emission of toxic gas is avoided, it is guaranteed that the pig farm is clean and sanitary, and the economic benefits of the pig farm are improved. Infection and spreading of diseases are avoided; meanwhile, a large number of nutrient sources, such as nitrogen and phosphorus, in the sewage are converted into organic fertilizer; the purified wastewater is deeply cleaned, so that the recycling standard is met, and the cyclic utilization of resources is realized.

A utilization method of FAU molecular sieve crystallization mother liquor, characterized in that, comprising: uniformly mixing FAU molecular sieve mother liquor, silicon source, inorganic alkali, water and aluminum source to obtain a type molecular sieve synthesis system mixture with a molar ratio of SiO2 / Al2O3=1.85-1.99, Na2O / SiO2=1.0-1.6, H2O / SiO2=45-65; aging and hydrothermal crystallization are performed on the mixture, and the product is recovered to obtain a type molecular sieve and a type molecular sieve filtration mother liquor; or further uniformly mixing the type molecular sieve filtration mother liquor and an aluminum-containing compound, stirring at 160-200 DEG C for 2-8 hours to obtain a recycled aluminum source with a SiO2 content of 50-300 ppm; uniformly mixing silicon source, inorganic alkali, recycled aluminum source and water to obtain a FAU molecular sieve synthesis system mixture, aging and hydrothermal crystallization are performed on the mixture, and the product is recovered to obtain a FAU molecular sieve and a FAU molecular sieve crystallization mother liquor. The method can not only completely recycle the FAU molecular sieve mother liquor, avoid waste water discharge, reduce the consumption of inorganic alkali and deionized water, and significantly reduce the production cost, but also can be flexibly used for preparing FAU molecular sieve and / or a type molecular sieve.

The utility model provides a kind of carbon emission detection device for logging with warning function, it is related to logging gas detection technical field, including carbon emission detector, the right side of carbon emission detector is provided with processing mechanism;Processing mechanism includes heat insulation cylinder, heat insulation cylinder is set to the right side of carbon emission detector, the inner wall of heat insulation cylinder is fixedly connected with heating cylinder, the left side of heating cylinder is fixedly communicated with exhaust pipe, the left end of exhaust pipe is fixedly communicated with the gas outlet end of carbon emission detector, the outer surface of heating cylinder is equipped with electric heating wire, the outer surface of heat insulation cylinder is fixedly communicated with gas supply pipe.This carbon emission detection device for logging with warning function, after logging carbon emission detection device detects harmful gas and alarms, can carry out harmless treatment to harmful gas, prevent harmful gas from being directly discharged to pollute environment, further prevent staff from inhaling harmful gas, improve the effect of logging carbon emission detection device warning safety protection measures.

This invention discloses a hydrogen-ammonia fuel injector with a swirling structure. The injector includes a fuel injector housing, an ammonia inlet assembly, an electronic control assembly, a valve assembly, an air intake assembly, and an injection assembly. The injection assembly includes an injector housing, a hydrogen-ammonia interface, a fixed sleeve, a flow pipe, a sliding sleeve, a fixing block, a return spring, and a return assembly. Swirling vanes are installed inside the flow pipe, forcing liquid ammonia and hydrogen into a high-speed swirling state. Centrifugal force and shear force are used to achieve uniform mixing of the two phases, forming a homogeneous hydrogen-ammonia fuel mixture. Combined with the hyperboloidal outlet channel at the bottom of the flow pipe, the injection flow pattern is organized, achieving an integrated function of "hydrogen premixing - forced swirling mixing - injection flow pattern organization." This fundamentally solves the combustion instability problem caused by uneven mixing, significantly improves the uniformity of the hydrogen-ammonia fuel mixture, and, combined with the flow pattern organization effect of the hyperboloidal outlet, effectively improves combustion stability and fuel utilization, reducing NOx emissions and ammonia slip.

The invention relates to the technical field of cloth bag dust removal equipment, in particular to a skeleton structure of a dust removal cloth bag for environmental protection engineering, which comprises a top frame, a fixed rod, a bottom frame, a movable rod, a convenient assembly part, a pressing ring, a locking part, a sealing plate, an abutting rod, an adjusting ring, an adjusting part and an unlocking part. The movable rod is arranged to be matched with the convenient-to-mount component, so that the framework is kept in a contraction state during mounting, and a cloth bag is prevented from being scratched. After the cloth bag is in place, the pressing ring is pressed, the movable rod can be automatically locked and unfolded to support the cloth bag, and the sealing plate is pushed to press the opening of the cloth bag. During normal work, the movable rod is driven by negative pressure of the cloth bag to move inwards, the sealing plate is further pressed through the adjusting component, and sealing is enhanced. When airflow is abnormal due to breakage of the cloth bag, increased airflow pushes the sealing plate, locking is automatically relieved through the unlocking component, the lower pressing ring bounces and resets, and the sealing plate seals the center hole, so that unfiltered gas is prevented from being discharged, visual breakage position indication is provided for maintenance personnel, and the maintenance efficiency is improved.

The oil tank VOCs self-pressure recovery system and recovery method disclosed by the application comprises an ejecting chamber, one end of the ejecting chamber is communicated with a high-pressure fluid pipeline outside, one end of the high-pressure fluid pipeline located outside the ejecting chamber is communicated with a gas collecting and supplying pipeline through a pipeline, and the other end of the high-pressure fluid pipeline located inside the ejecting chamber is sequentially communicated with a throat pipe and a nozzle; the other end of the ejecting chamber opposite to the high-pressure fluid pipeline is sequentially communicated with a mixing chamber, an expansion pipe and a mixed fluid pipeline outside; one side of the ejecting chamber is communicated with a low-pressure fluid pipeline outside, and one end of the low-pressure fluid pipeline located outside the ejecting chamber is communicated with the top of the tank through a pipeline. The application realizes the dynamic balance of the gas phase system in the tank and the sealing of the whole system by controlling the ejecting amount, thereby controlling the emission source and avoiding the emission of volatile organic compounds. The application reasonably utilizes the low pressure required by the pre-heating furnace, greatly reduces the consumption of external energy, meets the safety and environmental protection requirements, recovers the energy, and improves the efficiency.

The invention discloses a method for efficiently leaching platinum group metal in a waste automobile catalyst, and belongs to the field of rare and precious metal smelting. The method comprises the following steps: a leaching process: mixing the hulled waste automobile catalyst with a leaching agent, carrying out acid leaching in an acidic solution for a period of time, adding a complexing agent to complex platinum group metals, leaching for a period of time, and filtering to obtain a pregnant solution rich in the platinum group metals and carrier residues; wherein the leaching agent is a cerium-containing compound; a resin adsorption process: adsorbing the pregnant solution through an adsorption column filled with adsorption resin to obtain an adsorbed solution; and an elution process: washing the adsorbed adsorption resin with water and eluting the platinum group metal step by step, and regenerating the eluted adsorption resin for cyclic utilization. The method aims at avoiding generation of toxic and harmful substances (chlorine and NOx) and use of highly toxic cyanide in an existing wet process, environmental pollution and potential safety hazards are fundamentally eliminated, and meanwhile the leaching efficiency of the platinum group metal is remarkably improved.

The application provides a modified activated carbon for removing perchlorate in water for sheep farms and a preparation method thereof, relates to the field of water treatment, and the method carries out reaction on activated carbon in a citric acid aqueous solution, uniformly loads a carboxyl layer on the surface of the activated carbon, and obtains preliminarily modified activated carbon; carries out reaction on the preliminarily modified activated carbon in an alkaline polydimethyl diallyl ammonium chloride aqueous solution, and strong cation quaternary ammonium salt is adsorbed on the surface of the carboxyl layer through electrostatic action, thereby obtaining secondarily modified activated carbon; and carries out reaction on the secondarily modified activated carbon in a triethylenetetramine aqueous solution, so that triethylenetetramine molecules are further combined to the strong cation quaternary ammonium salt through electrostatic adsorption, thereby obtaining the modified activated carbon for removing perchlorate in water for sheep farms, the adsorption capacity of the activated carbon for solutes with negative charges is significantly enhanced, and the treatment efficiency of the overall farm environment on perchlorate is improved.

This utility model discloses a waste treatment device for isothiazolinone production, relating to the field of isothiazolinone production technology. The waste tank is connected to a first filter, the first filter is connected to a settling tank, the settling tank is connected to a distillation tank, the distillation tank is connected to a degradation tank, the degradation tank is connected to a sedimentation tank, the sedimentation tank is connected to a second filter, the second filter is connected to a nanofiltration membrane device, and the nanofiltration membrane device is connected to a treatment water tank. This device can effectively remove harmful substances from the isothiazolinone production waste, achieving harmless treatment of the waste and also realizing resource recycling to a certain extent, thus possessing good environmental and economic benefits.

A method for the synergistic lithium and phosphorus supplementation and targeted regeneration of lithium iron phosphate (LFP) cathode materials is disclosed, involving a regeneration and repair method for retired LFP cathode materials. This method aims to address the technical problems of poor uniformity, poor electrochemical performance, and poor safety associated with existing direct regeneration methods for retired LFP cathode materials. The method comprises: 1. Cathode material stripping and crushing; 2. Preparation of an aqueous repair solution using a reducing agent, lithium salt, and phytic acid; reaction of the degraded LFP black powder in the repair solution; filtration, drying, and segmented sintering to completely reconstruct the material's intact crystal structure and coat it with a highly conductive carbon layer. The regenerated LFP cathode material exhibits a discharge specific capacity of up to 149.7 mAh g⁻¹ at a current density of 1 C. ‑ ¹, and it is cycle-stable, making it suitable for use in the battery industry.

The invention relates to a method for testing a filter unit (10), comprising an exchangeable filter insert (20) having at least one polarization element and an electrically insulating filter material which can be polarized by energizing the filter insert (20) via the polarization element, and a power supply module (22), an electronic data processing device (30) evaluates the energization of the filter cartridge (20) by the power supply module (22) in order to detect an erroneous operating state and / or a malfunction of the filter unit (10).

The application discloses a contact type regenerative combustor based on pure ammonia catalysis and a thermoelectric conversion system thereof, and the device comprises a body surrounded by an upper wall surface, a lower wall surface and a side wall surface, and the body is provided with a plurality of splitter plates and a tail gas baffle; the inner surfaces of the upper wall surface and the lower wall surface are coated with a perovskite catalyst layer; the outer sides of the upper wall surface and the lower wall surface are directly attached with thermoelectric modules, and the outer sides of the thermoelectric modules are provided with cooling plates. The application optimizes the flow field and enhances the disturbance through the splitter plates, guides the tail gas to preheat the mixed gas by using the baffle, and reduces the reaction activation energy by using the catalyst to assist combustion; the high-temperature tail gas directly heats the hot end of the thermoelectric module, and the liquid cooling plate maintains the low temperature of the cold end, thereby forming efficient thermoelectric conversion. The application has the advantages of compact structure, high thermal efficiency, effectively widened stable working range of ammonia combustion, and solved problems of small temperature difference, low efficiency and poor combustion stability of ammonia fuel of the existing combustor thermoelectric system.

This invention provides a waste steam recycling device for oil processing, relating to the field of oil processing technology. It includes a processing component with a waste heat recycling component and a condensation recycling component connected to its side. The processing component includes a softening pot, one end of which is connected to a tail steam discharge pipe, and the other end to a steam inlet pipe. By opening the valve on the first conveying pipe, this invention facilitates the transport of tail steam to the interior of the heating tank, enabling preheating of the material inside the pre-softening pot and facilitating the reuse of thermal energy. Preheating the material inside the pre-softening pot reduces steam costs. Finally, the tail steam is transported to subsequent processing equipment via a connecting pipe, preventing direct emission into the air and reducing air pollution. The insulation shell provides insulation for the heat inside the heating tank.

This invention belongs to the field of new energy and renewable energy development technology, and relates to a dual-source power generation device that combines raindrop cascade power generation with atmospheric moisture absorption, desorption, and condensation of water droplets. It includes: a housing, a droplet power generation array, a condensation chamber, and an energy storage and monitoring system disposed inside the housing, and a photovoltaic composite panel disposed on the top of the housing; the droplet power generation array includes a support plate disposed inside the housing and multiple droplet power generation units, which are arranged in an array on the upper surface of the support plate; the photovoltaic composite panel is movably connected to the housing; the photovoltaic composite panel is a composite panel composed of a photovoltaic panel, a heat-conducting plate, and a fiber layer; the heat-conducting plate is disposed between the photovoltaic panel and the fiber layer; the energy storage and monitoring system is electrically connected to the droplet power generation array and the photovoltaic panel respectively, and is also electrically connected to an external energy storage device or load. This invention alleviates the technical problems of low energy conversion efficiency and poor all-weather stability existing in the prior art.

An environmentally friendly dispersion device for solid-liquid mixing includes a material tank (1), a motor (2), a support (4), and a stirrer. It also includes a lifting mechanism (3), an airflow distribution plate (6), a duct (7), and a negative pressure tail gas recovery device (8). The stirrer consists of a stirring shaft and stirring blades (5). The stirring blades 5 are installed at the lower end of the stirring shaft, and the upper end of the stirring shaft is connected to the motor shaft extension via a coupling. In this dispersion device, an airflow distribution plate is installed in the material tank. The airflow distribution plate is connected to the duct, which is then connected in parallel to the negative pressure tail gas recovery device. Under negative pressure, the airflow distribution plate can draw in air, absorbing the dust and gas generated during the feeding and stirring processes, which then enters the recovery device, preventing the diffusion of dust and gas. The chemical production tail gas recovery device collects various tail gases generated during the production process, preventing direct emission of waste gas into the air and purifying the production environment.

The utility model discloses a methyltrimethoxysilane production device, relates to the technical field of methyltrimethoxysilane, and aims to solve the problems that in the background technology, when cold air is introduced into an inner cylinder, gas exhausted from the inner cylinder is not subjected to adsorption and purification treatment, gas generated during reaction is directly exhausted into the external environment, and the production cost is low. In order to solve the problems of poor heat exchange efficiency and poor environmental protection property, the utility model provides the following scheme: the device comprises a reaction cylinder, the reaction cylinder comprises a cylinder body, a cylinder cover connected to the outer wall of the top of the cylinder body through a bolt, an air inlet pipe fixedly arranged on the inner wall of the upper part of one side of the cylinder body and an air outlet pipe fixedly arranged on the inner wall of the upper part of one side of the cylinder body, and one side of the cylinder body is provided with a heat exchange mechanism; the heat exchange mechanism comprises a mounting box, a mounting plate connected to the outer wall of the mounting box through bolts, and a plurality of heat dissipation plates. According to the utility model, the reaction gas can be cooled, adsorbed and purified while the interior of the barrel is cooled, so that the reaction gas is prevented from being directly discharged into the external environment, and the environmental protection property is improved.

The utility model discloses a bubble water machine with a water tank structure, which comprises a bubble main machine, a water tank component, a gas cylinder joint component connected with a carbon dioxide gas cylinder and a machine head are arranged on the bubble main machine, a water cylinder joint seat movably connected with a bubble water cylinder is arranged on the machine head, and the water tank component is communicated with the water cylinder joint seat. A gas injection pipeline communicated with the gas cylinder connector assembly through a gas pipe and a water injection pipeline communicated with the water tank assembly through a bubble water pipeline are arranged on the water cylinder connector base, an exhaust valve is arranged on the water cylinder connector base and communicated with the water tank assembly, and a gas inlet switch is arranged on the bubble main machine. Water in the water tank assembly is pumped into the bubble water bottle installed on the water bottle connector base through the water injection pipeline, gas is injected into the water through the gas injection pipeline, the exhaust valve is controlled to be opened when gas needs to be exhausted, and carbon dioxide gas mixed with water vapor and needing to be exhausted flows back into the water tank assembly along the exhaust valve. And carbon dioxide gas containing water vapor is prevented from being discharged into the bubble host.

The utility model discloses a circulating water heat exchanger for utilizing waste heat of an associated gas discharge torch, belongs to the technical field of heat energy recycling equipment, and aims to solve the problem that the combustion heat energy of the existing oilfield associated gas torch is reduced and wasted for heat energy utilization. A conical spiral heat-conducting coil pipe main body is formed by connecting one end of a conical spiral heat-conducting coil pipe group in parallel with a metal heat-conducting coil pipe water outlet pipe bundle and connecting the other end of the conical spiral heat-conducting coil pipe group in parallel with a metal heat-conducting coil pipe water inlet pipe bundle; isolation supporting connecting plate ribs are welded in gaps between pipe bodies of the conical spiral heat conduction coil pipe set in a clamped mode, a coil pipe centralizing positioner is welded to the top of the metal heat conduction coil pipe set, and a heat conduction coil pipe supporting bottom tray is welded to the bottom of the metal heat conduction coil pipe set in a connected mode. And the external connecting pipe joint of the water outlet pipe bundle of the metal heat-conducting coil pipe and the external connecting pipe joint of the water inlet pipe bundle of the metal heat-conducting coil pipe extend outwards and are connected to the outer side of the torch cylinder body. The whole structure is practical and suitable for utilization of heat energy of the associated gas discharge torch.

This invention relates to the field of electronic circuit materials technology, and particularly to a composite carrier for electrodeposited copper foil, its preparation method, and its applications. The preparation method of the composite carrier for electrodeposited copper foil of this invention includes pretreatment of a metal substrate; constructing a template layer on the substrate surface by pulse electrodeposition; and constructing a release layer on the surface of the template layer. By adjusting the height, curvature, distribution density of the protrusions in the template layer, and the thickness of the release layer, this invention can precisely control the surface morphology of the copper foil release surface, directly producing copper foil for lithium-ion batteries with through-hole structures or brown-free copper foil for printed circuit boards with single-sided blind via structures. This invention can prepare copper foil for different application fields on the same production line, significantly simplifying the process, reducing equipment investment and production costs, and the resulting copper foil exhibits excellent performance in battery cycle life and high-frequency signal transmission.

The utility model relates to the field of refrigerator waste gas treatment, in particular to a heat storage type incinerator system for refrigerator broken waste gas treatment, which comprises a bag-type dust collector, a heat storage combustion furnace and an absorption tower, the bag-type dust collector is connected to the bottom of the heat storage combustion furnace through a waste gas guide pipe, and a liquid guide pipe is arranged at the bottom of the heat storage combustion furnace; the liquid conduit is connected to the absorption tower, the bag-type dust remover comprises a dust removal chamber and a dust removal barrel, the dust removal chamber is provided with dust removal cloth, the dust removal barrel is mounted at the bottom of the dust removal chamber, the waste gas conduit is connected to the top of the dust removal barrel, waste gas is fed into the heat storage combustion furnace through the blower, and the heat storage combustion furnace is connected to the bottom of the absorption tower through the gas conduit; the absorption tower is provided with a filling layer which is provided with a plurality of filling holes; a liquid sprayer is arranged at the top of the filling layer and is used for spraying a sodium hydroxide solution; the top of the absorption tower is connected with an exhaust chimney through an exhaust conduit. The device has the effect of reducing equipment corrosion caused by waste gas.

The present application belongs to the technical field of metallurgy and mineral processing suspension fluidization roasting, and particularly relates to a system and process for producing nickel by coal-based roasting reduction electric furnace smelting of laterite nickel ore. The system comprises a feeding drying unit, a preheating drying and crushing unit, a heat supply heating unit, a coal-based pre-reduction unit, an electric furnace smelting waste heat recovery unit, a dust removal, powder conveying and desulfurization unit, and the laterite nickel ore is processed by the "dry powder crushing, coal suspension roasting, coal-based pre-reduction, and ore-smelting electric furnace" technology. The present application has strong adaptability to raw materials, can produce high-value products from cheap resources, and adopts multiple energy-saving technologies in the new process to greatly reduce energy consumption and realize efficient use of energy. The present application makes up for the limitations and deficiencies of the traditional RKEF process, can reduce process energy consumption, improve resource recovery rate, provides a new innovative breakthrough direction for efficient utilization of laterite nickel ore resources for smelting nickel-iron alloy, and can greatly improve the economic value of the development and utilization of such resources.

The utility model provides a circulating energy-saving type driving control device for a circular cooler, which belongs to the technical field of circular coolers and comprises an annular cold bin, a support is embedded in the circle center of the annular cold bin, and partition plates extending into the annular cold bin are circumferentially, uniformly and slidably arranged on the support. The inner cavity of the support is provided with a partition regulation and control assembly used for independently controlling the partition partition plates to be folded and unfolded, in the refrigeration process, in a region without goods, the region is partitioned through the corresponding independent partition regulation and control assembly, meanwhile, the corresponding output pipe is closed, cold air is blown into the region with the goods in a concentrated mode, and therefore the goods can be refrigerated. Each independent partition plate is controlled according to the area where the goods are located, so that the energy consumption of the refrigerator is reduced, cold air is prevented from being discharged into the area without the goods, and the cold energy is input into the area where the goods are concentrated, so that the energy-saving effect is achieved, and excessive cold energy output is avoided.

The invention discloses waste gas purification equipment for industrial equipment part production, and relates to the technical field of waste gas purification equipment for industrial equipment part production. The waste gas purification equipment for industrial equipment part production comprises a purification tank, a gas inlet pipe is fixed to the right side of the purification tank, and a gas outlet pipe is fixed to the top of the purification tank; a spraying device is arranged on the outer wall of the purification tank and comprises a water tank, a water pump, a water outlet pipe and a spraying pipe. According to the waste gas purification equipment for industrial equipment part production, when waste gas is treated and enters a purification tank from a gas inlet pipe, a motor is started, a rotating shaft can drive a separation plate to rotate, the separation plate can strike the entering waste gas, and therefore a large number of impurities in the waste gas can be struck and fall off; the waste gas is prevented from driving a large amount of solid impurities to be discharged upwards, and the problem that the waste gas containing a large amount of solid particle impurities is discharged upwards to cause blockage of the spraying pipe is solved.

The embodiment of the invention provides surface-treatment-free PVC artificial leather. The surface-treatment-free PVC artificial leather comprises a functional PVC surface layer, a PVC foaming layer, a glue layer and a base cloth layer, wherein the functional PVC surface layer at least contains PVC resin, a plasticizer, linear polydimethylsiloxane, talcum powder, hollow glass beads and a thermal reversible cross-linking agent, and does not contain a polyurethane surface treatment layer. According to the surface-treatment-free PVC artificial leather, the failure risk of a polyurethane surface treating agent layer is eradicated, a series of interface reliability problems of interlayer adhesion reduction, surface layer swelling, softening, pulverization and the like caused by plasticizer migration are fundamentally eliminated by canceling the polyurethane surface treating agent layer, the long-term durability of the product is qualitatively improved, and the service life of the product is prolonged. The performance of the material is derived from the material body, and even if the surface is worn due to long-term use, the newly exposed material still has the same chemical components and functions, so that the stable performance of the product is realized.

The utility model discloses a molten aluminum vacuum ladle smoke exhaust system, which relates to the technical field of smoke exhaust equipment, and comprises an electrolytic tank, a smoke suction pipe is arranged in the electrolytic tank, the end part of the smoke suction pipe extends to the outside of the electrolytic tank, the end part of the smoke suction pipe is communicated with a smoke exhaust pipe, the upper end opening of the smoke exhaust pipe is provided with a smoke exhaust fan, and the upper end opening of the smoke exhaust pipe is provided with a smoke exhaust fan. A spray head assembly is installed in the smoke exhaust pipe, a water storage tank is installed outside the electrolytic tank, a water supply pump is installed outside the water storage tank, water flow is sprayed into the smoke exhaust pipe through the spray head assembly, heat exchange is conducted through contact between the water flow and high-temperature smoke, and therefore the temperature of the smoke passing through the area can be reduced; the smoke exhaust fan and other assemblies are prevented from being overheated, particles in the smoke are adsorbed through water flow, the smoke is filtered, the particles in the smoke are prevented from being discharged into the atmosphere, the atmosphere is protected, and the environmental protection performance of the equipment is improved.

The utility model discloses a drying oven, which belongs to the technical field of chip heating, and comprises a drying oven body, the top of the rear side of the drying oven body is fixedly connected with a purification mechanism, the rear side of the purification mechanism is fixedly connected with a discharge mechanism, and the bottom of the rear side of the drying oven body is fixedly connected with a supporting seat. Supporting rods are fixedly connected to the two sides of the top of the supporting base, limiting plates are fixedly connected to the tops of the supporting rods, the purifying mechanism can extract harmful gas generated by high-temperature decomposition of glue in the drying oven body in time through cooperation of an air suction pipe and an air suction pump, and the air suction pump provides power for gas flowing; harmful gas can be quickly transferred to the purification mechanism from the drying oven body, accumulation of the harmful gas in the drying oven is prevented, potential threats of the harmful gas to chip performance and operator health are reduced, and the harmful gas enters the purification shell, is subjected to preliminary purification treatment and then enters the filter box through the gas conveying pipe to be further purified.

This invention discloses a negative carbon lightweight aggregate based on CO2 mineralization of coal-based solid waste and its preparation method, belonging to the technical field of solid waste resource utilization and low-carbon building materials. The method uses coal-based solid waste such as fly ash and coal slag as main raw materials, introducing uniform micropores through spray granulation with a trace amount of hydrogen peroxide solution. After pre-curing and drying, it is then mineralized and solidified using a low-concentration CO2 atmosphere. This method eliminates the need for cement or other cementing materials, resulting in low cost and no indirect carbon emissions. Furthermore, by synergistically controlling the hydrogen peroxide foaming and CO2 mineralization enhancement processes, the bulk density of the aggregate is significantly reduced; the resulting aggregate has a low bulk density (630~860 kg / m³). 3 With a compressive strength of 4.1~6.0MPa and a water absorption rate of 14~20%, it can meet the requirements of super high-rise buildings, large-span structures, prefabricated components, and the reinforcement and renovation of old buildings, significantly increasing the applicability and economy of coal-based solid waste lightweight building aggregate.

This invention discloses a method for the direct oxidative carbonylation of methane to prepare acetic acid. Specifically, this invention provides a catalytic method for the preparation of acetic acid from methane, comprising the following steps: under solvent conditions, in the presence of light, an iron catalyst, chloride ions, and an oxidant, methane and carbon monoxide undergo a methane oxidative carbonylation reaction to obtain acetic acid. This method utilizes readily available methane, carbon monoxide, and air (or oxygen), employs an iron catalyst, and achieves direct, efficient, and highly selective acetic acid production via a one-step photocatalytic reaction, demonstrating promising application prospects. The substrate scope of this invention is broad, applicable to a range of chain and cyclic alkanes.

The utility model discloses swinging blank wiping equipment with blowing, sweeping and sucking functions. The swinging blank wiping equipment comprises a frame body, a conveying assembly, a rectangular blank wiping assembly, a driving device, a dust blowing assembly, a dust sweeping assembly and a dust sucking assembly, the dust blowing assembly is used for blowing away dust on the surfaces of the polished green bricks, the dust suction assembly is used for sucking away dust falling off from holes of the perforated conveying belt, and the dust sweeping assembly is used for sweeping away dust which cannot fall off from the holes of the perforated conveying belt. According to the content, the swinging green brick wiping equipment with the blowing, sweeping and sucking functions solves the problem that a green brick throwing machine in the prior art is only suitable for dried green bricks with certain strength; the blank sweeping machine adopts a rolling type brush, so that the contact surface and the pressure are not enough, and only surface floating dust can be removed; the problems that a single-millstone blank grinding machine is prone to uneven grinding and difficult to level, a combined millstone blank grinding machine is prone to millstone marks, and dust generated by grinding flies in the production environment or is attached to the surfaces of ground green bricks are solved.

The invention discloses a preparation device and method for a powder-coated flexible wire rod, the preparation device comprises the flexible wire rod, a yarn guide wheel, a winding device and a functional material coating assembly, the coating assembly comprises a liquid feeding device, a powder feeding device and a curing unit which are sequentially arranged from bottom to top, and flexible wire rod channels which are coaxially aligned are arranged in the liquid feeding device, the powder feeding device and the curing unit; the preparation method comprises the four steps of guiding conveying, adhesion liquid layer forming, dry powder coating and curing forming, a uniform adhesion liquid layer is formed through a liquid feeding device and is subjected to backflow reuse, the powder feeding device forms a rotating powder flow through an L-shaped air inlet pipe to achieve multi-stage coating and interception escape powder recycling, and the adhesion liquid layer and the functional material dry powder are cured through precise temperature control of a curing unit. The problems of low powdering rate, non-uniform distribution, raw material waste and dust pollution of a traditional process are solved, the production efficiency is improved by 30% or above, the cost is reduced by 40%, multifunctional wires with heat preservation, electric conduction, antibiosis and the like can be prepared, and the method is suitable for the fields of intelligent wearing, medical protection and the like.