1015results about How to "Improve purification efficiency" patented technology

The invention relates to a high-activity recombinant XVII type collagen as well as a rapid preparation method and application thereof, and belongs to the technical field of bioengineering. The amino acid sequence of the high-activity recombinant XVII type collagen is as shown in SEQ ID NO. 1, and the nucleotide sequence of the high-activity recombinant XVII type collagen is as shown in SEQ ID NO. 2. The invention also provides a preparation method and application of the recombinant XVII type collagen. The high-activity recombinant XVII type collagen has good biological activity, has good effects of promoting cell adhesion, cell proliferation and cell migration, and can be compounded with other proteins to form raw materials of tissue engineering products, cosmetics, health care products or medicines. The high-activity recombinant XVII type collagen gene is integrated to different positions of a yeast genome through three different vectors, and the copy number of a target gene is increased, so that the expression quantity of the recombinant XVII type collagen is remarkably increased, and the yield of the high-activity recombinant XVII type collagen is effectively increased.

The invention discloses a flue gas purification device for highland barley hull incineration, relates to the field of flue gas purification, and solves the problem that an existing measurement device is difficult to be inserted into a groove of a graphite bearing for accurate measurement, the flue gas purification device comprises a device shell and a bottom plate fixedly mounted at the bottom of the device shell, and a mounting frame is fixedly mounted at the bottom of the bottom plate; an air inlet pipe is fixedly mounted on the inner side of the mounting frame, an exhaust pipe is fixedly mounted at the top of the device shell, and a filter disc is rotationally mounted on the inner side of the device shell; the purification mechanism is used for continuously purifying flue gas entering from the gas inlet pipe, and the purification mechanism is mounted at the bottom of the filter disc; by means of the purification mechanism, flue gas can enter the device shell through the gas inlet pipe, activated carbon on the filter disc purifies the flue gas and is exhausted from the exhaust pipe, the activated carbon used for a long time is exhausted through rotation of the filter disc, new activated carbon is replaced, continuous purification of the flue gas is achieved, and therefore the purification efficiency of the flue gas is improved.

The utility model provides an intercepting and purifying device suitable for river-entering farmland ditches, which comprises an intercepting structure and a purifying structure, the intercepting structure comprises a sludge deposition and grit chamber and a steel grating, a denitrification device containing denitrifying phosphorus-accumulating bacteria and adsorptive mineral materials is placed in the sludge deposition and grit chamber, and the steel grating is arranged in the sludge deposition and grit chamber. A sand setting inlet and a sand setting outlet are formed in the two opposite sides of the steel grating respectively, the steel grating is arranged at the sand setting outlet, and the sand setting inlet is used for being communicated with an ecological ditch; the purification structure comprises an ecological purification pond and a gabion packing bed, the ecological purification pond is provided with a purification inlet and a purification outlet, gabions are arranged at the purification inlet and the purification outlet, the ecological purification pond is tightly attached to the sludge deposition and grit chamber, the purification inlet is opposite to and communicated with the grit inlet, and the gabion packing bed is arranged in the sludge deposition and grit chamber. And the gabion packing bed is arranged in the ecological purification pond.

The invention relates to the technical field of water treatment, in particular to a movable treatment device for rural black and odorous water treatment, comprising: a movable vehicle body for supporting and moving overall components of equipment; the bottom of the treatment tank is fixedly connected with the top of the mobile vehicle body, the top of the treatment tank is fixedly connected with a water inlet end cover through a bolt, and the outer side of the treatment tank is fixedly connected with an access door through a bolt. Compared with the prior art, large-particle impurities can be prevented from entering the purification assembly, blockage of purification components such as an activated carbon cylinder is avoided, the smooth purification process is guaranteed, the burden of the purification assembly is relieved by removing the large-particle impurities in advance, and the purification assembly can treat small-particle pollutants and soluble substances more intensively. Therefore, the purification efficiency of the whole treatment device can be improved, and the treatment time and cost are reduced.

The invention discloses a gas purification device for an experiment table, which comprises a shell, a plurality of air inlet holes are formed in the side wall of the shell along the circumferential direction, a coarse filter cartridge is arranged in the shell, an activated carbon filter cartridge is arranged in the coarse filter cartridge, a guide cylinder is arranged in the activated carbon filter cartridge, an exhaust passage communicated with an exhaust hole is formed in the guide cylinder, and a plurality of air inlet holes are formed in the side wall of the shell along the circumferential direction. An exhaust channel is formed in the shell, an air inlet is formed in the bottom of the exhaust channel, a flow guide column is fixedly arranged in the exhaust channel, a spiral flow guide piece is arranged on the outer wall of the flow guide column in the axis direction, and a plurality of ultraviolet germicidal lamps are arranged on the side wall of the flow guide column at intervals. Large-particle impurities are preliminarily filtered by the coarse filter cylinder, harmful gas is adsorbed by the activated carbon filter cylinder, and the gas is further purified by the spiral flow deflector and the ultraviolet germicidal lamp in the flow guide cylinder, so that the discharged gas is ensured to reach the environment-friendly standard.

The invention relates to the technical field of carbon emission monitoring, and particularly discloses a carbon emission concentration monitoring method and an early warning device.According to the method, the processing compliance degree can be accurately analyzed by obtaining raw material processing process parameters of a target factory, so that the raw material processing process is adjusted in time, unnecessary carbon emission sources are effectively reduced, and the carbon emission quality is improved. A solid foundation is laid for reducing overall carbon emission, waste gas treatment process parameters of a target factory are collected, waste gas treatment efficiency is scientifically evaluated, the waste gas treatment process is optimized and adjusted according to the waste gas treatment process parameters, waste gas purification efficiency is remarkably improved, carbon emission is further reduced, and finally, by monitoring and collecting carbon emission concentration related parameters of the target factory, the carbon emission concentration related parameters of the target factory are monitored and collected. According to the method, the abnormal condition in the carbon emission process can be early warned in real time, measures are taken in time for adjustment, it is ensured that the carbon emission is controlled within a reasonable range, the carbon emission reduction process of a factory is powerfully promoted, and powerful technical support is provided for constructing a low-carbon, environment-friendly and sustainable production mode.

The invention discloses a metallurgical waste gas purification and recovery method based on a particle swarm optimization algorithm, and the method comprises the following steps: S1, carrying out the pretreatment of metallurgical waste gas, monitoring the temperature, pressure, flow velocity and chemical components in real time, and inputting the temperature, pressure, flow velocity and chemical components into an optimization module; s2, key parameters in the purification and recovery process are analyzed through a recursive morphological coupling algorithm, a problem is decomposed into sub-problems, and operation parameters are determined; s3, performing global search through a morphological recombination particle swarm optimization algorithm to generate an optimization parameter set; s4, performing dynamic recombination on the potential optimal solution by applying an evolutionary form recombination algorithm, and improving a local solution; s5, the optimized parameter set is applied to the purification device, dynamic adjustment is conducted through a recursive morphological coupling algorithm, and recognition and recovery of rare components are achieved; s6, performing multi-stage detection on the purified and recycled waste gas, and feeding back to an optimization module for parameter adjustment; and S7, according to waste gas components and process requirements, operation parameters are adjusted in a self-adaptive mode.

The utility model provides an industrial waste gas purification device which comprises a base, a purification box body, an exhaust fan and a vibration assembly, and the exhaust fan is fixed at the top of the purification box body; the vibration assembly comprises a supporting frame and a transmission shaft. The surface of the support frame is fixedly connected with the inner wall of the purification box body; the inner wall of the purification box body is fixedly connected with filter cloth and an elastic placement plate in sequence from top to bottom; the number of the supporting frames is two, through the arrangement of the vibration assembly, waste gas is filtered through the filter cloth while flowing downwards, dust in the waste gas is removed, then the waste gas makes contact with activated carbon placed on the elastic containing plate, then harmful substances in the waste gas are removed, the filter cloth can be prevented from being blocked by the dust after the filter cloth is flapped, and the dust removal effect is improved. After being flapped, the elastic placing plate drives the activated carbon to turn up and down, so that the contact area with the waste gas is increased, the waste gas purification is accelerated, and the waste gas purification efficiency is improved.

The invention belongs to the technical field of seawater purification, and particularly relates to an air flotation seawater purification pretreatment device which comprises a flocculant mixing tank and an air flotation tank mounted on one side of the flocculant mixing tank, a coagulant mixing tank is arranged at one end of the flocculant mixing tank, and an observation box is mounted on one side of the air flotation tank. The upper end face of the observation box is rotationally connected with a sealing cover, the sealing cover is made of an acrylic plate, one side of the upper end face of the air floatation tank is fixedly connected with an L-shaped guide plate, and a slag scraping assembly is arranged in an inner cavity of the air floatation tank. The problems that pollutants generated in seawater have certain viscidity, a small amount of pollutants are attached to the surface of slag scraping equipment, and after the slag scraping equipment rotates by a circle, a small amount of pollutants attached to the surface of the slag scraping equipment return to the seawater again, so that the overall treatment efficiency is reduced are solved.

The invention relates to the technical field of polymer purification, and particularly discloses a purification industrial control system for carbon dioxide-based polyols, in the removal process of phenolic compounds in the carbon dioxide-based polyols, the removal rates of the phenolic compounds are detected at two different moments respectively, and the removal rate of the phenolic compounds in the carbon dioxide-based polyols is calculated. Meanwhile, a data processing technology based on deep learning is used for conducting fine-grained local time domain interaction analysis on the stirring speed and the stirring temperature between the two time points to reveal the combined effect of the stirring speed and the stirring temperature on the removal efficiency of the phenolic compounds, removal measurement is conducted based on the combined effect, an effective removal measurement coefficient is generated, and the removal efficiency of the phenolic compounds is improved. And intelligently estimating the still required stirring duration by combining the removal rate change between the two time points. Through the mode, the reaction endpoint can be predicted in advance, and incomplete reaction or excessive reaction can be effectively avoided, so that the purification efficiency and the product quality are improved, and the automation level of industrial production is improved.

The present invention discloses a biofilm multi-stage treatment device for industrial wastewater with a telescopic mechanism, including a multi-stage treatment device body, a biological reaction tank and an aeration rod, the bottom of the aeration rod is fixedly connected to an aeration pipe, the outer wall of the aeration pipe is fixedly connected to an air dispersion nozzle, and the treatment device also includes: a receiving block and a disc. In the present invention, the first screw is driven to rotate by rotating the handle, and the two groups of first screw sleeves on the first screw move synchronously toward the center or both sides, the first connecting rod and the second connecting rod are fixedly connected to the first screw sleeve through a fixed rod, and the center of the first connecting rod and the second connecting rod is connected through a rotating shaft, so that the first connecting rod and the second connecting rod are synchronously expanded outward or contracted inward, and the disc at the bottom can synchronously adjust the spacing accordingly, thereby improving the growth environment of microorganisms, improving the purification efficiency of microorganisms, and improving the use effect of the product.

The invention relates to the technical field of quartz sand purification, and discloses a quartz sand acid quenching purification device and a using method thereof.The quartz sand acid quenching purification device comprises a shell and supporting legs fixedly connected to the bottom end of the shell, a stirring mechanism is arranged in the shell, a drying mechanism is arranged below the stirring mechanism, and a discharging mechanism is arranged above the stirring mechanism; the stirring mechanism comprises a supporting seat fixedly connected to the top end of the shell, a double-shaft motor is installed at the top end of the supporting seat, a first gear is fixedly connected to the output end of the left side of the double-shaft motor, the first gear is meshed with a second gear, and crushing rollers are fixedly connected to the outer walls of the other ends of the first gear and the second gear; the double-shaft motor can drive the rotating column to rotate, so that the first stirring blade is driven to move up and down, and meanwhile, the first stirring blade is driven to rotate while revolving, so that quartz sand and aqua regia in the partition frame are fully stirred, corrosion is accelerated, and the purification efficiency is improved.

The invention relates to the technical field of dust monitoring, and discloses a dynamic monitoring system and method for dust distribution and diffusion, and the method comprises the steps: determining a monitoring region through a site positioning module, and configuring a ground monitoring site; the data acquisition module is used for acquiring numerical data of a ground monitoring station and integrating data of different dimensions; the data display module processes and displays the obtained numerical data and displays a trend curve of the analog data; the safety early warning module analyzes the numerical data, judges the standard exceeding condition of the numerical data, triggers early warning and extracts and displays radar data and meteorological data of the ground monitoring station when the numerical data of the ground monitoring station exceeds the standard, so that the response time to potential pollution events is shortened; detailed data of related monitoring stations are extracted in real time to assist in decision making; and the control execution module generates a spraying strategy according to the standard exceeding condition of the numerical data, and controls the spraying group to execute the spraying strategy. According to the invention, the resource use is optimized, and the purification efficiency is improved.

The utility model discloses a coal gas purification tower device and relates to the technical field of purification treatment equipment. A water tank is arranged at the bottom end of the tower body, the water tank is communicated with the tower body, a filter screen is arranged between the water tank and the tower body, a circulating pump is mounted on the water tank, the water inlet end of the circulating pump is connected into the water tank through a pipeline, a steel water conveying pipe is mounted in the tower body through a bearing, and spray heads are distributed on the steel water conveying pipe; according to the coal gas purification tower device, a two-layer water distribution mode is adopted, rotary spraying is arranged, the spraying pipe automatically rotates in the water spraying process, water mist can be uniformly sprayed into the tower body, the spraying range can be expanded, all-directional coverage is achieved, spraying is free of dead angles, the contact area between gas and liquid is increased, the mass transfer efficiency is further improved, and the gas purification tower device is suitable for large-scale popularization and application. The purification efficiency of equipment can be improved, meanwhile, a cleaning liquid real-time circulating filtering system is arranged, the utilization efficiency of liquid is improved, the working efficiency is high, and the performance is stable and reliable.

The invention relates to the technical field of carbon dioxide capture, and discloses modified anion exchange resin for removing amine liquid thermal stability salt and a preparation method thereof. The method comprises the following steps: (1) cleaning anion exchange resin by using deionized water; (2) activating the resin cleaned in the step (1) by using an acid solution or an alkali solution; (3) performing reflux reaction on the resin activated in the step (2) and a hydrophobic silane coupling agent in an anhydrous solvent, and cleaning with deionized water after the reaction; (4) reacting the resin treated in the step (3) with organic acid, and cleaning with deionized water after the reaction; and (5) reacting the resin treated in the step (4) with a vinyl compound containing a sulfonic acid group in a solvent, and cleaning with deionized water after the reaction. The modified anion exchange resin prepared by the method provided by the invention can improve the purification efficiency of decarburized amine solution in the process of ion exchange purification of alcohol amine solution.

The invention relates to a purification method of high-purity boron trifluoride 11, which comprises the following steps: S1, carrying out nitrogen purging and replacement on a purification device of boron trifluoride 11, and keeping the moisture content to be less than 1ppm; s2, the boron trifluoride 11 raw material is subjected to adsorption impurity removal, part of HF impurities are removed, and mixed gas is obtained; s3, rectifying the mixed gas obtained in the step S2 to remove light components, so as to obtain a mixed solution; s4, rectifying the mixed solution obtained in S3 again to remove heavy components, so as to obtain high-purity boron trifluoride 11; and S5, collecting the high-purity boron trifluoride 11 into a cold trap, and filling the cold trap with the high-purity boron trifluoride 11. According to the technical scheme provided by the invention, the purchased product is introduced into the rectifying tower to remove light components and heavy components so as to obtain a high-purity product, and light components and heavy component impurities such as H2, O2, Ar, N2, CO2, SO2, HF and SiF4 in boron trifluoride 11 are effectively removed through accurate control of the rectifying process, so that a high-purity 5N-grade boron trifluoride 11 product can be obtained, and the requirement of high-end application is met.

The invention belongs to the technical field of wastewater adsorption and purification, and particularly relates to a water-washing phosphogypsum wastewater purification treatment system which comprises a pretreatment module, an adsorption and purification module and a detection module, the pretreatment module performs preliminary filtration treatment on wastewater, the adsorption and purification module performs adsorption and purification treatment on the pretreated wastewater, and the detection module performs detection on the wastewater. The detection module is used for detecting the treated wastewater and judging whether the treated wastewater reaches a discharge standard or not; large water pressure is formed at the position of the liquid inlet pipe at the bottom through wastewater liquid level difference, and water flow formed through instant conduction impacts a purification cavity in the purification layer, so that adsorption materials which adsorb impurities and have the tendency of mutual adhesion and clustering are dissociated and dispersed under the action of the purification water flow which is violently impacted; the purification layer with unsmooth circulation is effectively self-cleaned, so that the smooth flow of the wastewater is ensured, the frequency of manual cleaning is reduced, and the purification efficiency of the phosphogypsum washing wastewater is improved.

The utility model provides an L-aspartic acid purification device. According to the L-aspartic acid purification device, a dissolving tank is fixedly connected to the top of a mounting frame, a filter disc is mounted at the position, close to the middle, of the interior of the dissolving tank through a fixing ring, a plurality of inlet pipes are mounted at the top of the dissolving tank, and a driving structure is mounted at the top of the dissolving tank. A rotating shaft is mounted at the output end of the driving structure, a third mounting ring and two first mounting rings are mounted on the outer surface of the rotating shaft, fixing frames are fixedly connected to the positions, located on the two sides, of the outer surface of the third mounting ring, and grinding rods are fixedly connected to the bottoms of the two fixing frames. According to the L-aspartic acid purification device provided by the utility model, the dissolving speed of raw materials and additives is increased by stirring and grinding in the dissolving tank through the structure, so that the purification efficiency is improved, and the purification purity is favorably improved through multiple purification.

The invention belongs to the field of biology, and discloses a polymyxin B specific degrading enzyme and application thereof. The amino acid sequence of the polymyxin B specific degrading enzyme is as shown in SEQ ID NO: 1. The polymyxin B specific degrading enzyme disclosed by some embodiments of the invention can selectively degrade polymyxin B1-1 and polymyxin B3, and does not influence the activity of polymyxin B1 and polymyxin B2, so that the polymyxin B specific degrading enzyme can be used for purification in the preparation process of polymyxin B; the polymyxin can resist acid, alkali and organic solvents, and can efficiently identify and decompose polymyxin B1-1 and B3 components under various conditions. The porous microspheres are used as the solid-phase carrier, so that the surface of the microspheres can accommodate more enzyme ligands, the acid-base resistance and organic solvent resistance of the ligands can be effectively improved, and the polymyxin B purification efficiency can be effectively improved.

The invention belongs to the technical field of carbon nanotube purification, and provides a carbon nanotube purification method. The method comprises the following steps: placing unpurified carbon nanotube raw powder in a fixed bed Joule thermal reactor; introducing weak oxidizing gas, heating to enable the temperature of the reaction zone to reach 100-400 DEG C, generating first Joule heat at the carbon nanotube raw powder, and removing an impurity carbon layer coating the surfaces of the metal catalyst particles; heating to enable the temperature of the reaction zone to reach 200-700 DEG C, generating second Joule heat at the carbon nanotube raw powder, and removing impurity carbon on the surface of the carbon nanotube; and mixing the treated carbon nanotube raw powder with acid, and removing the metal catalyst particles. According to the present invention, the weak oxidation gas is adopted as the reaction gas, the electric field is introduced under the external low temperature condition to perform the stepped purification, and the Joule heat is selectively generated on the different types of the impurity carbon and the metal catalyst micro-region so as to achieve the effect of selectively removing the multiple types of the impurity carbon under the mild condition.

The invention discloses a heavy metal wastewater treatment filtering device which comprises a support, the top of the support is fixedly connected with a purification tank, the top of the purification tank is fixedly provided with a first motor, the output end of the first motor is fixedly connected with a stirring shaft, and the top of the purification tank is fixedly connected with a water inlet pipeline. A first blow-off pipe is fixedly connected to the bottom of the purification tank, a first filter tank is fixedly connected to the bottom of the first blow-off pipe, a second motor is fixedly installed outside the first filter tank, a driving roller is fixedly connected to the output end of the second motor, and a driven roller is arranged on the side, away from the second motor, of the driving roller; through multi-stage treatment such as stirring, scraping and filtering, the wastewater purification efficiency is effectively improved, the filter screen is prevented from being blocked, and impurity discharge and equipment maintenance are facilitated.

The utility model discloses a deodorization device for an adhesive production workshop, which comprises a support frame, a channel and an activated carbon box, the channel is arranged at the top end of the support frame, the activated carbon box is arranged in the channel, and the deodorization device for the adhesive production workshop further comprises a vibration component arranged in the channel in a sliding manner; the collecting components are arranged on the left side and the right side in the channel in a sliding mode. According to the deodorizing device for the adhesive production workshop, through cooperative work of a motor, a lead screw and a sliding block, a connecting rod is driven to move up and down, so that a rotating rod is driven to move up and down, through cooperative work of a limiting plate, a limiting rod and the rotating rod, a hammer head is driven to move left and right, so that a vibration plate is hammered, and through cooperative work of the vibration plate and a pull rod, the effect of deodorizing is achieved. And through cooperative work of the components, the purposes of conveniently and rapidly cleaning the outer wall of the activated carbon, increasing the adsorbability of the activated carbon and improving the purification work efficiency are achieved.

The invention relates to an anaerobic ammonia oxidizing bacteria enrichment optimization control method based on ecological niche regulation and control, which comprises the following steps: S1, selecting key ecological niche indexes of a constructed wetland as investigation factors, performing difference setting on the investigation factors, forming experimental systems of different ecological niche, controlling and monitoring the constructed wetland, and collecting data; s2, taking the relative abundance and / or absolute abundance of the anaerobic ammonia oxidizing bacteria collected in the step S1 as dependent variables, taking key ecological niche indexes as independent variables, and performing fitting so as to predict a model; and S3, performing prediction through the prediction model, comparing a prediction result with a control target, and performing optimization control on the anaerobic ammonia oxidizing bacteria enrichment of the constructed wetland according to a comparison result. According to the method, the prediction model with relatively high prediction accuracy can be obtained, so that the enrichment of anaerobic ammonia oxidizing bacteria can be ensured, the sewage treatment efficiency can be improved and a relatively good total nitrogen removal effect can be obtained by adjusting ecological niche indexes in the constructed wetland by virtue of the prediction model.

The utility model discloses a sewage treatment device. Comprising a reaction shell, a water outlet channel for discharging treated water is arranged on the inner side of the upper part of the reaction shell; a water inlet pipe for feeding sewage is arranged at the bottom of the reaction shell; a perforated plate for supporting filler balls is arranged above the water inlet pipe, and the filler balls inoculated with activated sludge are arranged on the perforated plate; and an aeration pipe is arranged in the reaction shell on the lower side of the water inlet pipe. According to the utility model, the problem of maintenance of high-concentration sludge is solved, the concentration of sludge in the aeration tank can be effectively improved, the concentration of activated sludge in the aeration tank is not limited by hydraulic retention time and sludge discharge cycle, and meanwhile, due to more sludge anoxic and anaerobic zones arranged in the sludge maintenance device, the denitrification reaction is more facilitated, and the denitrification efficiency is improved. Therefore, the total nitrogen removal effect is better.

The invention relates to the technical field of environmental protection, in particular to a sludge incineration flue gas efficient purification system which comprises a pretreatment module, a dynamic ion separation module, an acid gas neutralization module, a heavy metal adsorption module, an acid-gold interaction purification module, a deep oxidation module and an intelligent control module. Wherein the pretreatment module is used for receiving initial flue gas flow; the dynamic ion separation module is used for primarily separating heavy metal ions; the acid gas neutralization module is used for stabilizing emission of acid gas; the heavy metal adsorption module is used for accurately adsorbing heavy metal ions; the acid-gold interactive purification module is used for treating composite pollutants; and the intelligent control module is used for automatically adjusting module operation parameters. According to the sludge incineration flue gas treatment system, by integrating an efficient purification technology and intelligent control, comprehensive removal and stable up-to-standard emission of various pollutants in sludge incineration flue gas are achieved, and the response speed, the purification efficiency and the energy-saving effect of the system are improved.

The invention discloses an acid-making process using hydrogen sulfide waste gas and waste sulfuric acid, and relates to the technical field of acid-making processes, and the acid-making process specifically comprises the following steps: step 1, high-temperature reaction and gas generation, step 2, gas purification and conversion, a demister and a spraying assembly are used for removing dust, impurities and harmful substances in the gas; and step 3, sulfur trioxide absorption and sulfuric acid preparation. According to the acid-making process using the hydrogen sulfide waste gas and the waste sulfuric acid, the absorption slurry is sprayed out through the nozzle to be in countercurrent contact with the gas mixture, physical absorption and chemical reaction are combined, dust, impurities and other harmful substances in the gas mixture are effectively removed, and the gas purification efficiency is improved; the nozzles at the upper end and the lower end are used for spraying and cleaning the corrugated plate, it is ensured that the corrugated plate is always kept clean, system efficiency reduction caused by blockage or pollution of the corrugated plate is reduced, and the operation efficiency and stability of the whole system are improved.

The blood purification device comprises a blood purifier, a downward extending plate and a plurality of dialysis pipelines, a plurality of pipeline connectors are installed on one side of the downward extending plate, liquid flowing grooves are formed in the pipeline connectors, the dialysis pipelines are inserted into the inner walls of the corresponding liquid flowing grooves, and the dialysis pipelines are connected with the downward extending plate through the liquid flowing grooves. A connector chuck is installed on the side wall of the dialysis pipeline, a bottom groove is formed in the bottom end of the pipeline connector, an annular inner groove is formed in the pipeline connector, and a check ring is fixedly connected to the inner wall of the annular inner groove; the sealing air bag expands and extrudes when the dialysis pipeline is connected with the pipeline connector, the connecting tightness and the sealing effect between the connector chuck and the bottom groove are enhanced, then blood leakage or air entering the pipeline is prevented, the actual blood amount participating in purification is kept, and the purification efficiency is prevented from being affected; air is prevented from entering a pipeline to form air embolism, and the risk that external bacteria infect blood is avoided.

The invention discloses a biogas purification and heat supply method for boiler combustion, and relates to the technical field of biogas heat supply, the method comprises the following specific steps: biogas collection and primary treatment: collecting biogas from a biogas generation source, enabling the biogas to pass through a primary filter device with a filter screen with specific mesh number, removing dust and solid residue impurities, and performing secondary treatment; by introducing the magnetic field to assist the purification process, the purification efficiency of the biogas can be remarkably improved, magnetic impurity particles in the biogas can directionally move and gather under the action of the magnetic field, so that the magnetic impurity particles are more easily removed by a physical separation means, and meanwhile, the magnetic field can promote the activity and reaction rate of substances participating in the purification reaction, so that the purification efficiency is improved. By means of the magnetic field, decomposition and conversion of impurities are effectively accelerated, the biogas is more thoroughly purified, the quality of the biogas subjected to auxiliary purification of the magnetic field is remarkably improved, the impurity content is greatly reduced, the biogas can be more sufficiently combusted in the follow-up combustion heat supply link, more heat is released, and the combustion efficiency is improved.

The invention discloses an industrial preparation method of ortho-position large-steric-hindrance aniline, which comprises the following steps: reacting 2, 4-disubstituted aniline with benzhydrol or a derivative thereof, and performing simple post-treatment on the reaction product to obtain the ortho-position large-steric-hindrance aniline product. The method effectively solves the problem of difficulty in large-scale industrial preparation in the prior art, and has the advantages of mild reaction conditions, simplicity in operation, high efficiency and good effect.

The utility model relates to the technical field of tail gas purification and recovery, and discloses a coal dimethyl oxalate tail gas purification and recovery device which comprises a bottom plate, one end of the top of the bottom plate is fixedly connected with a pressure pump, and the output end of one side of the pressure pump is fixedly connected with a buffer tank. According to the coal-to-dimethyl oxalate tail gas purification and recovery device, through mutual cooperation of the structures, coal-to-dimethyl oxalate tail gas can be efficiently purified and recovered, the resource utilization efficiency is remarkably improved, and the coal-to-dimethyl oxalate tail gas purification and recovery device is more convenient to produce and use in batches and is more practical.