410 results about "Cleaner production" patented technology

The invention relates to the field of intelligent manufacturing, and discloses a production process regulation and control method based on big data, which comprises the following steps: collecting original data in a production process according to a sensor group, and carrying out data cleaning on the collected original data to obtain cleaned production process data; performing fusion processing according to the cleaned production process data to obtain a fused production process data set; establishing an initial prediction model according to the working condition classification data to obtain initial prediction model data corresponding to each working condition; the production process is regulated and controlled through big data analysis, the product quality can be monitored in real time, the process parameters are predicted, optimized and adjusted, so that the product quality is effectively improved, the quality deviation is reduced, key factors in the production process are accurately recognized and adjusted through the steps of data cleaning, fusion, classification, model optimization and the like, and the production efficiency is improved. Therefore, unnecessary production waste is reduced, and production efficiency is improved.

The invention discloses a solid waste-based zinc chloride preparation process control method and system, and relates to the technical field of zinc chloride preparation, and the method comprises the following steps: obtaining a unified time base line, establishing a bubble phase reference field, collecting a sound-induced echo sequence, a micro-pressure waveform sequence and a light scattering sequence of a reaction liquid under the bubble phase reference field, and calculating the solid waste-based zinc chloride preparation process. Fusing to generate a bubble density space-time matrix; and performing reversible time-frequency rearrangement based on the bubble density space-time matrix, decomposing to obtain different frequency band distributions, extracting a narrow-band resident bubble group, calculating critical volume distribution and collapse precursor indexes, and constructing a dynamic risk fingerprint database. According to the method, a unified time base line and a bubble phase reference field are constructed, the bubble state is perceived in real time, collapse forebodes are recognized, a dynamic risk fingerprint database is established, directional intervention and reverse energy channel collapse nucleus extinguishing are achieved in combination with an energy aggregation node, finally closed-loop regulation is constructed through calibration write-back, the safety and stability of zinc chloride preparation are improved, and the method is suitable for large-scale popularization and application. And efficient utilization and clean production of solid waste are promoted.

The invention provides a tissue culture bottle interior washing control method and device and a readable storage medium. The device comprises an input track, a photoelectric sensor, a bottle shifting mechanism, a turnover mechanism and the like. The input track guides bottles into the turnover mechanism, the bottle shifting mechanism drives the bottles according to the design, a plurality of cleaning tracks are arranged on the circumference of the turnover mechanism for switching operation, a nozzle of the water injection mechanism and a water level sensor are accurately matched for water injection monitoring, and efficient cleaning of the tissue culture bottles is cooperatively achieved. According to the control method, through multiple processes of detection starting, feeding, water injection, stirring and spin-drying, station switching, secondary water injection and circulating propelling, all links are intelligently regulated and controlled according to feedback of the sensors, and the bottle cleaning quality and efficiency are guaranteed. The electronic device runs a memory program through the processor, the storage medium stores program codes, a carrier is provided for implementation of the control method, tissue culture bottle cleaning automation and intellectualization are promoted, the industrial clean production level is improved, cost is reduced, efficiency is improved, and remarkable practical value and wide application prospects are achieved.

The utility model discloses dust-free cement clean production equipment, and relates to the technical field of cement processing, the dust-free cement clean production equipment comprises a cement storage tank, the bottom of the cement storage tank is fixedly provided with a blanking pipe, the surface of the blanking pipe is slidably connected with an outer pipe, the bottom of the cement storage tank is fixedly provided with a fixed rod, and the fixed rod is connected with the outer pipe. A fixing piece is fixedly installed on the surface of the outer pipe and slidably connected with the surface of the fixing rod, a limiting plate is fixedly installed at the bottom of the fixing rod, a driving motor is fixedly installed on the cement storage tank, the driving motor drives a threaded rod to rotate, then a connecting plate moves downwards, and then the fixing piece slides on the fixing rod. And then the outer pipe moves downwards, protection is conveniently conducted when cement is discharged, then dust splashing is prevented, and cement splashing is reduced to the maximum extent.

The invention discloses a preparation method and application of a pellet adhesive, and belongs to the technical field of solid waste resource utilization. Industrial solid waste is dried and ground and then is uniformly mixed with an organic additive to prepare an adhesive, the adhesive is mixed and stirred with dried carbonaceous powder during application, and a pellet finished product is obtained through compaction treatment; the solid waste is converted into the pellet adhesive with proper viscosity and water absorption through the simple preparation method, resource utilization is achieved, a new thought is provided for solid waste resource utilization, the adhesive prepared through the method has better adhesive performance and high pelletizing rate and pellet compressive strength, and the service life of the pellet adhesive is prolonged. The industrial production cost can be greatly reduced, clean production is achieved, energy conservation and emission reduction are achieved, and remarkable economic benefits and social benefits are achieved.

The invention belongs to the technical field of gold smelting wastewater treatment and resource utilization, and relates to a method for recycling gold by cooperatively treating tailings with acid wastewater, which comprises the following steps of: (1) concentrating the acid wastewater; (2) controlling the fineness of the roasting cyanidation gold extraction tailings; (3) removing impurities by acid; (4) adsorbing and recovering gold and silver by using thiourea leaching carbon; and (5) vulcanizing the acidolysis solution to recover copper and arsenic in a targeted manner. According to the method, efficient treatment is carried out through a five-stage treatment process, so that sulfuric acid in the acid wastewater is efficiently recycled, the roasting and cyaniding gold extraction tailings are comprehensively and efficiently utilized, resource high-value utilization and clean production of the acid wastewater and the roasting and cyaniding gold extraction tailings are achieved, and harm of the acid wastewater and the roasting and cyaniding gold extraction tailings to the environment is eliminated; the technological process is smooth, operability is high, the environment is excellent, and remarkable economic benefits, social benefits and environmental benefits are achieved.

The invention discloses a high-temperature solid oxide electrolyzed water hydrogen production system coupling photo-thermal power generation and thermochemical heat storage. The system comprises a power module, a thermochemical heat storage and air supply module, a water vapor supply module and a high-temperature solid oxide electrolyzed water module. The photo-thermal power generation system provides clean electric energy and high-temperature heat energy, the thermochemical heat storage module achieves high-density storage and on-demand release of heat energy through reversible reaction, the intermittent problem of renewable energy sources is solved, and high-temperature stable operation of an SOEC electrolytic cell is ensured. Through the coupling design of the thermochemical heat storage system and the SOEC, heat flow distribution is optimized, energy consumption of traditional electric heating is reduced, the external steam heating requirement and the hot air requirement are reduced, the total energy cost of hydrogen production is reduced, and the unit hydrogen production cost is remarkably reduced. The thermochemical heat storage module can stabilize the volatility of photo-thermal power generation, so that the system can still stably supply energy when sunlight is insufficient, the utilization rate of renewable energy sources is increased, clean production of green hydrogen is achieved, and the carbon neutralization target is met.

The utility model relates to the field of waste collection, in particular to a waste collection device of a PUR (polyurethane) gluing machine, which comprises a rack, a supporting grating is bolted at the top of the rack, a gathering tank is bolted at the bottom of the supporting grating, a fixed blanking pipe is communicated with the bottom of the gathering tank, and a flexible blanking pipe is communicated with the bottom of the fixed blanking pipe. The middle of each fixed discharging pipe communicates with an exhaust fan, a receiving box is bolted to the bottom of the inner cavity of the rack, a cover plate is clamped to the top of the receiving box, the top of the cover plate communicates with the bottoms of the flexible discharging pipes, and first sliding rails are bolted to the inner sides of inner cavities of the receiving box. By means of the supporting grating, the gathering groove, the fixed discharging pipe, the flexible discharging pipe, the exhaust fan, the material receiving boxes and the like, waste chippings falling onto the supporting grating are sucked into the gathering groove, the waste chippings are discharged into the lower material receiving box through the discharging pipe, the manual cleaning cost is saved, and it is guaranteed that the production environment is clean and tidy.

The invention relates to the technical field of aluminum oxide clean production, in particular to a method for treating gibbsite through high-temperature calcification transformation based on source blocking, which comprises the following steps: mixing high-iron bauxite, a calcium compound and Bayer mother liquor, and then carrying out pulpifying to obtain ore pulp; conveying the ore pulp to a high-pressure dissolution reactor to obtain transformed red mud; separating and washing the transformed red mud by using a vortex rapid settling tank; and adding a binder into the washed and dried transformed red mud to prepare small balls, and roasting, hardening and solidifying to obtain ironmaking pellets. According to the method, Bayer process flow equipment can be directly adopted, the method has the characteristics of simple process and equipment, high production efficiency and the like, the transformed slag serves as a pellet raw material to be directly used for producing pellets, no solid waste is generated in the whole process, and finally harmless, high-valued and full-quantized consumption of the red mud is achieved; and the worldwide problem that a large amount of red mud is discharged in the aluminum oxide production process is thoroughly solved.

The invention relates to a full-automatic cleaning production line and a cleaning method. The technical problem that an existing full-automatic production line is unreasonable in design is solved. The full-automatic cleaning production line comprises two jig conveying runners which are arranged at an interval up and down; the lifting transfer assembly is arranged on the discharging side of the jig conveying runner located on the lower portion and the feeding side of the jig conveying runner located on the upper portion; the positioning and jacking mechanism is arranged on the conveying track of the jig conveying runner located above, and the positioning and jacking mechanism is used for forcing the cleaned jig to be upwards separated from the jig conveying runner at the set position of the conveying track; and the cleaning mechanism is used for cleaning the cleaned jig which is separated from the jig conveying runner in multiple dimensions. According to the full-automatic cleaning production line and the jig cleaning method, the continuous conveying efficiency of jigs is high, material distribution and positioning are accurate, and the cleaning effect is improved.

The utility model discloses clean production equipment of an amine liquid desulfurization system, which comprises a desulfurization tower for countercurrent absorption of sulfur-containing gas and lean amine liquid, and a rich amine liquid pre-dealkylation device, a rich amine liquid flash evaporator, an amine liquid regeneration tower and an amine liquid purifier which are sequentially connected in series at the rear end of a rich amine liquid outlet of the desulfurization tower, the liquefied gas pre-liquid and solid removal device, the liquefied gas deep liquid removal device and the liquefied gas water scrubber are sequentially connected in series at the rear end of a liquid hydrocarbon outlet of the desulfurization tower; wherein the lean amine liquid outlet of the amine liquid purifier is further connected to the desulfurization tower through a pipeline, so that the regenerated lean amine liquid is reused for desulfurization of the sulfur-containing gas. The equipment disclosed by the utility model can efficiently remove hydrocarbon and amine, and has the advantages of reducing energy consumption and improving system stability.

The invention discloses a clean production process for contaminated acid treatment, which comprises the following steps: (1) after contaminated acid is subjected to heavy metal removal pretreatment, adding iron oxide / iron and copper oxide / copper into the contaminated acid to carry out neutralization reaction, and carrying out solid-liquid separation to obtain a ferric sulfate / ferrous sulfate solution and a copper sulfate solution; (2) concentrating and crystallizing the ferric sulfate / ferrous sulfate solution and the copper sulfate solution which are generated by neutralizing the waste acid; (3) roasting the ferric sulfate / ferrous sulfate and copper sulfate crystals step by step to remove crystal water; (4) carrying out high-temperature roasting on the ferric sulfate / ferrous sulfate or copper sulfate after the crystal water is removed, and decomposing into ferric oxide, copper sulfate, sulfur dioxide or sulfur trioxide; the obtained ferric oxide and copper oxide are recycled for neutralization treatment of waste acid after being recycled, and the obtained sulfur dioxide and sulfur trioxide can be recycled for sulfuric acid production. The waste acid is subjected to circulating neutralization treatment, so that the generation of traditional waste acid neutralization slag is avoided, and the resource utilization of sulfur is also realized.

The invention provides a device and a method for evaporating and solidifying power plant wastewater by using flue gas waste heat, the device comprises a bypass flue led out from a dust remover and a desulfurizing tower in a flue gas treatment main flue, the bypass flue is provided with an evaporating and solidifying unit, the evaporating and solidifying unit comprises an evaporating and solidifying device, an atomizing and spraying device and a dust filtering device, the dust filtering device and the atomizing and spraying device are positioned at the upper part in the evaporation and curing device, and the dust filtering device is positioned above the atomizing and spraying device; the dust filtering device comprises blowing pipes, filter bags and venturi tubes, the blowing pipes are connected with the filter bags through the venturi tubes, each blowing pipe corresponds to a plurality of groups of filter bags and venturi tubes, and the filter bags and the venturi tubes are in one-to-one correspondence. According to the device disclosed by the invention, by arranging the bypass flue, waste heat of flue gas is utilized to evaporate and solidify wastewater, so that wastewater recovery treatment and zero emission can be realized, additional energy consumption is not needed, the treatment efficiency is high, the treatment cost is low, a main flue gas treatment process is not influenced, and clean production is realized; the device is simple in structure, convenient to maintain and low in operation cost.

The invention discloses a dust removal and recovery system of a stirring machine, and relates to the technical field of stirring machines, and the dust removal and recovery system is technically characterized by comprising a base and a support fixedly mounted on the base, a stirring tank is fixedly mounted at the top of the base, a dust removal mechanism is arranged on the left side of the stirring tank, and a stirring mechanism is arranged on the support; the dust removal mechanism comprises a dust guide assembly, a knocking assembly, a dust suction assembly and a recovery assembly, the dust guide assembly is fixedly installed on the stirring tank and is a dust guide pipe communicated with an inner cavity of the stirring tank, an exhaust fan is fixedly installed at the dust outlet end of the dust guide pipe, and a conveying bent pipe is fixedly installed at the output end of the exhaust fan; by arranging the dust guiding assembly, the dust collecting assembly, the knocking cleaning assembly and the recycling assembly and optimizing electric field distribution, efficient capturing, automatic cleaning and unified collecting treatment of dust are achieved, environmental pollution is remarkably reduced, staff health is protected, meanwhile, the system operation efficiency and stability are improved, the treatment cost is reduced, and the system is suitable for popularization and application. And the requirements of modern industrial production on an efficient and clean production environment are met.

The invention discloses a method for preparing a liquid polyurethane curing agent from chain extender residues, which comprises the following steps of: carrying out transesterification on excessive micromolecular diol or a mixture of diol and triol and p-aminobenzoic acid lower alkyl ester substances in the chain extender residues in low-viscosity low-molecular-weight polyether polyol; a monofunctional substance is converted into a product with the functionality of 2-3, and the environment-friendly liquid curing agent composition obtained after the reaction can be used for a bi-component solvent-free elastic polyurethane system independently or together with other chain extenders. According to the method, the chain extender residues are developed and recycled on the basis of analyzing the components of the chain extender residues, waste is turned into wealth, pollution to the environment caused by solid waste formed by the chain extender residues is avoided, the production cost of enterprises is reduced, and the requirements of green and clean production are met.

The invention relates to the technical field of comprehensive recovery and resource utilization of gold dressing and smelting, in particular to a method for comprehensively recovering valuable elements by resource utilization of roasting cyanidation tailings. Comprising the following steps: S1, acidifying and curing the roasted cyanidation tailings; s2, carrying out high-acid leaching on the acidified and cured filter cake; s3, recovering gold, copper and iron; s4, roasting the high-acid acid leaching residues and the copper-zinc-silver oxide ore; s5, recovering copper and zinc from the roasted ore; and S6, gold and silver are extracted from the copper-zinc acid leaching residues. Valuable elements in the roasting cyanidation tailings are efficiently recycled and utilized, high-value utilization and clean production of resources of the roasting cyanidation tailings are achieved, the technical problem that the valuable elements in the roasting cyanidation tailings are difficult to effectively recycle is solved, the technological process is smooth, operability is high, the environment is good, and the method is suitable for industrial production. The method has remarkable economic benefits, social benefits and environmental benefits.

The invention belongs to the technical field of electrode materials, and particularly relates to an electrode active material and a preparation method thereof, and a preparation method of carbon-coated lithium iron manganese phosphate. The electrode active material obtained by the method provided by the invention is a uniform solid solution, elements are uniformly distributed, phase separation of the positive electrode material is avoided, and high chemical performance of the product is ensured; the obtained active material is of a porous structure, and the high specific capacity, the excellent rate capability and the good cycle stability of the final positive electrode material can be achieved. In addition, the structure is also beneficial for realizing sufficient carbon coating in the production process of the positive electrode material, so that the performance of the material is further improved. In addition, the preparation method provided by the invention is environment-friendly and economical, large-scale commercial production can be realized, waste gas is discharged after reaching the standard after being treated, and clean production is realized; and a tail gas treatment system is further added, so that hydrochloric acid generated in the production process is recycled.

The utility model relates to the technical field of fresh egg liquid product production, and discloses a fresh egg liquid product production system which comprises a soaking box, a gear rubber belt and a conveying belt, rotating shafts are rotationally connected to the upper side and the lower side between the front face and the back face of an inner cavity of the soaking box through bearings, and driving gears are connected to the outer surfaces of the rotating shafts in a sleeved mode. According to the egg soaking and feeding device, by arranging the soaking box, the gear rubber belt, the conveying belt, the rotating shaft, the driving gears, the concave plate, the rotating column, the movable plate, the bearing plate, the flow guide frame and the driving assembly, eggs can be conveniently soaked and fed, and therefore the cleaning efficiency of dirt on the surfaces of the eggs is improved; the egg cleaning production line is simple in structure and convenient to operate, the length of the cleaning production line is shortened, soaked eggs can be conveniently conveyed into a brushing system by arranging a flow guide frame and a conveying belt, the production cost is effectively reduced by arranging the structure, meanwhile, water resource waste is avoided, and therefore the use requirements of customers can be met.

The invention provides a method for recovering sodium sulfate from salt-containing wastewater and preparing ammonium sulfate and sodium carbonate, and the method comprises the following steps: controlling sodium sulfate and sodium chloride to be close to a co-saturation point at an evaporation temperature, so that more impurities such as Cl <-> can be prevented from being mixed into solid sodium sulfate, and the solid sodium sulfate separated out from the salt-containing wastewater is higher in purity; the sodium carbonate and the ammonium sulfate are prepared from the separated high-purity sodium sulfate, the prepared sodium carbonate and the ammonium sulfate are fewer in impurities and higher in purity, and according to measurement, the purity of the obtained sodium sulfate is 99.0% or above, the conversion per pass of ammonium bicarbonate is 90% or above, the purity of the sodium carbonate is 98% or above, and the purity of the ammonium sulfate can meet the requirements of GB / T535-2020. The method not only can be used for preparing a product with higher purity, but also has better environmental benefits and economic benefits, and can better meet the requirements of current green metallurgy and solid waste recycling on clean production.

The invention discloses a clean production process of a compound fertilizer, which comprises the following steps: carrying out primary granulation on raw materials to obtain granular raw materials; proportioning and mixing the granular raw materials to obtain a mixture; the mixture is crushed; carrying out secondary granulation; the raw materials are directly granulated and put in storage, so that the obvious defects of moisture absorption, hardening and deterioration easily caused by raw material storage in a compound fertilizer plant are overcome, the worry of long-term storage of the raw materials is fundamentally solved, the use area and conditions of a production plant are optimized, and the granulated granular raw materials can be stored in a large scale in a storage form of a new process. The contact area between particles is reduced, the volume compression density is increased, wet gas is not easy to enter, a series of practical problems of material overflow, dust splashing, corrosion caused by the fact that materials absorb moisture and adhere to production equipment and the like in traditional compound fertilizer production are well solved, and the requirements of green factories and clean production are well met. And the whole process is simple and efficient.

The application discloses a method for recovering nickel and phosphorus from electroless nickel plating waste liquid, and the method comprises the following steps: preparing nickel sulfate through extraction and stripping, and preparing iron phosphate through Fenton oxidation and precipitation; compared with the prior art, the method is characterized in that the waste liquid is pretreated, insoluble solid particles in the waste liquid are removed, emulsification of an extractant caused by particles in a subsequent extraction process is prevented, damage to extraction oil is avoided, and the extraction efficiency is ensured; in addition, the extractant used in the method can be recycled, secondary pollution is avoided, and the method is economical and practical; in the method, main pollutants in waste water are all converted into important chemical raw materials, recycling is realized, sulfuric acid and Fenton reagents used are all converted into terminal products, difficulty of end waste water treatment is not increased, clean production is met, the treatment cost is low, the product has high added value, and the method has strong practicability.

The invention provides riveting and slag removing integrated automation equipment for a pipe base movable joint and a method for producing the movable joint through the equipment, and relates to the technical field of connection of rigid pipes. According to the automatic burr and residue removing device, automatic burr and residue removing and centralized treatment are carried out on the riveted and assembled pipe base movable joint, and the excellent working environment is guaranteed while the product quality and the production efficiency are improved; the device specifically comprises an automatic table type riveting mechanism, an automatic part feeding mechanism and a riveting part slag removing mechanism. By means of automatic integrated design, accurate structure optimization and an environment-friendly treatment mechanism, efficient, high-quality and clean production of the pipe base movable joint is achieved, and the comprehensive production benefit is remarkably improved; the equipment integrates three core functions of riveting, feeding and slag removal, automation of the whole process from part feeding to finished product collection is achieved, manual intervention is reduced, and the labor intensity is lowered.

Water storage sealing grooves are formed in the edges of an inner ring annular discharging opening and an outer ring annular discharging opening of the silo top of the silo, the annular tracks of the inner ring and the outer ring of the lower portion of a rotary distributing machine body are each fixedly connected with a sealing rotary dust cover, and the edges of the sealing rotary dust covers stretch into the water storage sealing grooves. The rollers are tightly attached to the bottom of the water storage sealing groove; the sealed rotary dustproof cover body is provided with an opening corresponding to the discharge port of the rotary material distributor body; a dust removal type pressure relief device protruding upwards is arranged on the upper portion of a discharging opening of the rotary distributing machine body. According to the full-closed rotary distributing machine for the silo, provided by the invention, the silo is fully closed, so that the problem of unorganized discharge is solved; the dust removal type pressure relief opening with a plurality of layers of filtering dust removal nets or dust removal cloth bags solves the pressure relief problem of pressure generated by downward movement of materials during ore unloading, and ensures that the purposes of clean production and environmental protection standard reaching are achieved.

The invention relates to the technical field of waste lithium battery recycling, in particular to a battery pole piece laser separation device and method. The laser processing device is provided with a tensioning and unfolding mechanism and a multi-axis laser control mechanism, the tensioning and unfolding mechanism forms a compression roller clamping cavity through compression roller feeding assemblies at the two ends of a rack, and the double clamping cavities synchronously clamp the unwound battery pole piece, so that the battery pole piece is kept tensioned in a laser processing area; and the latter drives the laser to move in a three-dimensional space according to a predetermined route by a mobile end with the laser, and the electrode material and the current collector are separated in a non-contact laser lift-off mode. Dust pollution caused by physical grinding is avoided from the source, mechanical contact is avoided, a current collector cannot be damaged, machining precision is guaranteed through pole piece tensioning, efficient stripping of an electrode material is achieved through laser precise energy control, precise recycling of the material can be achieved in cooperation with sorting, the recycling purity and value are improved, the green and clean production requirement is met, and the device is suitable for large-scale recycling operation.

The invention discloses a magnetic separation, enrichment and recovery process for low-grade vanadium titano-magnetite, which belongs to the technical field of comprehensive utilization of vanadium titano-magnetite, adopts a combined mineral separation process of dry pre-enrichment and tailing discarding, wet grinding, concentration and refinement, combination of gravity and magnetism and middling retreatment, selects mature industrial equipment and optimizes the combination. High-efficiency dry pre-selection equipment, wet grinding equipment, a multi-section reselection and middling retreatment system and solid-liquid separation equipment are utilized, a large amount of tailings are discarded at the front end of a mine, iron and titanium are efficiently separated and comprehensively recycled in the middle main process, the recycling rate bottleneck is broken through through the middling retreatment technology, near-zero discharge of wastewater is achieved, and compared with a conventional process, water can be saved by 50-60%, and the economic benefit is high. According to the method, the grinding and separation cost is saved by 60-70%, the energy-saving effect is remarkable, the purposes of cost reduction, efficiency improvement, comprehensive utilization of resources and clean production are achieved, the production and technical problems of low-grade vanadium titano-magnetite mine enterprises in arid and water-deficient areas are effectively solved, and the method is suitable for large-scale production and application.

This invention belongs to the field of pharmaceutical drying technology and discloses a pharmaceutical drying and automatic lifting mixing device based on negative pressure fluidization, including a machine body, a lifting cylinder, and a second waste gas guide channel. In use, the invention drives the spiral lifting blades through a waste gas power transmission component, achieving automatic lifting and discharge of the dried material. This eliminates the need for manual transfer, reducing operator workload, improving production efficiency, and avoiding material contamination during transfer, thus meeting the clean production requirements of the pharmaceutical industry. Simultaneously, the pneumatic reciprocating lifting component drives the periodic lifting and lowering of the material plate, continuously agitating the material during the drying process. This breaks the limitations of static drying in existing equipment, ensuring that the material is uniformly exposed to hot air from all directions. This avoids problems such as uneven heating, clumping, and incomplete drying caused by material accumulation, guaranteeing the drying quality of pharmaceutical materials and preventing the destruction of active ingredients.

This invention belongs to the field of oilfield downhole operation technology and discloses a sucker rod oil scraping and anti-pollution device, including: a pre-works flange for sealing and covering the sucker rod; a mounting screw connected to the pre-works flange; and an oil collection tank connected to the pre-works flange via the mounting screw. The oil scraping assembly includes: a mounting plate, a triangular cover, an octagonal elastic scraping disc, elastic strips, a segmented elastic contraction scraping core, and an annular rubber ring. It can effectively absorb and buffer the gas pressure generated during sucker rod movement, smoothly discharge the gas inside the cavity, and prevent crude oil splashing. Simultaneously, the flexible elastic strips achieve large-area oil removal, and the upper segmented elastic contraction scraping core, combined with a dynamic pressing structure, scrapes away residual oil film. This dual protection significantly improves scraping efficiency and sealing performance, solves the problem of oil leakage and pollution, and provides a reliable guarantee for clean production in oilfields.

The utility model discloses a plasma coating manufacturing dust-free clean production line, which comprises a dust-free spraying bin and a drying production line, the dust-free spraying bin comprises a base and a paint control assembly, a spraying bin body is installed on the upper side of the base, a spraying assembly sliding rail is installed at the bottom of an inner cavity of the spraying bin body, and a dust-free spraying assembly is installed on the drying production line. A universal spraying assembly is slidably mounted on the spraying assembly sliding rail and connected with the coating control assembly, and a discharging and filtering assembly communicating with an inner cavity of the spraying bin body is mounted on the upper portion of the side face of the spraying bin body. According to the plasma coating manufacturing dust-free clean production line, the cleanliness of the production environment can be effectively improved, the temperature and humidity in the plasma coating spraying environment can be adjusted and controlled, production and preparation of radio frequency plasma operation electrode products are facilitated, the plasma coatings can be dried after being sprayed, the temperature in the drying process is stable, the conveying speed is controllable, and the production efficiency is improved. And the drying quality of the plasma coating is ensured, and the product percent of pass is improved.

This utility model discloses a fixed-point dust removal device for clean production of bauxite, relating to the field of dust removal technology in bauxite production. It includes a dust removal chamber with a collection chamber inside. Ventilation chambers and water storage chambers are respectively located on the left and right sides of the upper end of the collection chamber. The collection chamber, water storage chamber, and ventilation chamber are separated by partitions. A central shaft is installed at the front center of the dust removal chamber. Four side support plates are arranged in a circumferential array on the outer wall of the central shaft. A fixing ring plate is installed on the outside of the four side support plates, and a sealing plate is installed between adjacent side support plates. This utility model, through a series of structures, utilizes the triple action of wind, water cleaning, and mechanical scraping during dust removal to clean stubborn dust and impurities, while preventing dust from escaping during cleaning, thus efficiently cleaning dust in specific areas.

The invention discloses a method for treating tungsten wastewater containing ammonia nitrogen. The method comprises the following steps: subjecting the tungsten wastewater containing ammonia nitrogen to pressure filtration, acid adjustment, and an RO desalination system for treatment, thereby significantly improving the enrichment effect and removal efficiency of ammonia nitrogen, reducing the amount of wastewater entering a stripping tower for treatment, saving treatment costs, and improving the efficiency of tungsten wastewater treatment. The method ensures that the effluent water quality indicators meet the standards and can be directly discharged or reused, thereby reducing the amount of discharged wastewater, and realizing efficient treatment of tungsten wastewater, green and clean production, and resource recycling.