496results about How to "Reduce fouling" patented technology

The invention relates to a composite multi-effect scale and corrosion inhibitor and a preparation method thereof, and belongs to the technical field of water treatment agents.The composite multi-effect scale and corrosion inhibitor is prepared from carboxylic acid monomers, sulfonate monomers, organophosphorus compounds, modified chitosan, modified nanometer titania, oxidation type initiators, reduction type initiators, azole derivatives and the like, the modified chitosan is formed by coating the surface of chitosan with cerium chloride; the modified nano titanium dioxide is formed by coating the surface of nano titanium dioxide with sodium polyaspartate. The composite multi-effect scale and corrosion inhibitor is prepared in a mode of compounding while synthesizing, the scale inhibition effect is excellent, the comprehensive descaling capacity can reach 97% or above, and the composite multi-effect scale and corrosion inhibitor can be used for a high-pH, high-alkalinity, high-temperature and high-hardness circulating cooling water system under the high-concentration-multiple operation condition; the method is suitable for circulating cooling water treatment requirements under harsh conditions in industries such as chemical industry, smelting and light industry.

The invention relates to the technical field of production of automobile roofs, and particularly discloses a fiber-reinforced thermoplastic composite automobile interior ceiling and a preparation method thereof. A fiber-reinforced thermoplastic composite material automotive interior ceiling comprises a base material and a fabric, and the base material sequentially comprises a bottom layer non-woven fabric, a first adhesive film, a blend fiber felt and a second adhesive film from bottom to top; the blend fiber felt is made of reinforced fibers and thermoplastic fibers through a non-woven process. The preparation method comprises the following steps of: preparing the base material by a dry method, forming the framework and compounding the fabric by using a set of mold to obtain a ceiling prototype, and then punching by using a cold mold and integrally curling and covering the base material and the fabric of the skylight opening to obtain the ceiling. The automobile interior ceiling made of the fiber-reinforced thermoplastic composite material has excellent dimensional stability and is more low-carbon and environment-friendly, and raw material leftover materials generated in the production process and products produced after the life cycle is ended are easy to recycle.

The invention relates to the technical field of coolers, and provides a plate type cooler which comprises a box body and a spraying pipe and further comprises a plurality of heat exchange plates, the heat exchange plates are arranged in the box body at intervals and located below the spraying pipe, every two adjacent heat exchange plates are communicated, each heat exchange plate comprises a plate body, each plate body is provided with a cavity, and heat exchange water is introduced into each cavity; the multiple turbulent flow strips are arranged in the cavity at intervals, each turbulent flow strip is provided with a baffling part and a turbulent flow part, one end of each baffling part is arranged on the inner wall of the plate body, and each turbulent flow part is rotationally arranged at the other end of the corresponding baffling part; the control piece penetrates through one side of the plate body and extends out of the box body, the control piece is provided with a connecting end, the connecting end is arranged on the turbulent flow part, and the control piece is used for driving the turbulent flow part to rotate. By means of the technical scheme, the problems that in the prior art, due to the fact that channels between the plates of a traditional plate cooler are very narrow, the phenomenon of blockage after scaling is prone to occurring, and the heat exchange effect is affected are solved.

The invention relates to an oilfield underground slow-release scale and corrosion inhibitor and a production process thereof, and aims to solve the problems of scaling and corrosion caused by water injection in the oilfield exploitation process. According to the scale and corrosion inhibitor, various components such as the inorganic salt, the organic corrosion inhibitor and the natural plant extract are compounded, and a production process is combined, so that excellent properties such as long-acting slow release, efficient scale and corrosion inhibition, sterilization and algae removal, environmental protection and degradability are realized. The production process comprises the steps of raw material preparation, mixing reaction, melting homogenization, cooling forming, annealing treatment and the like, and stable performance and reliable quality of the scale and corrosion inhibitor are ensured by controlling process parameters of each step. The scale and corrosion inhibitor disclosed by the invention has obvious long-term effect, the workload of frequent addition and maintenance can be reduced, and the production cost is reduced; the environment-friendly and degradable characteristics meet the modern environment-friendly requirements, and the ecological environment can be protected. In addition, the scale and corrosion inhibitor has good adaptability and can adapt to different oil field geological conditions and fluid property differences.

The plate-type temperature adjusting equipment comprises a box body, a plate-type temperature adjuster and a scale wiping unit, the plate-type temperature regulator and the scale wiping unit are arranged in the box body, liquid is contained in the box body, and the plate-type temperature regulator is used for being immersed into the liquid to regulate the temperature of the liquid; the plate-type thermolator is provided with a plurality of plate-shaped fluid channels which are arranged side by side at intervals from front to back, a fluid inlet hole and a fluid outlet hole are formed in the front side and the rear side of each plate-shaped fluid channel respectively, and the fluid inlet holes and the fluid outlet holes are formed in the positions, close to the left side and the right side, of the plate-shaped fluid channels respectively. And a scale wiping unit is arranged in a gap between every two adjacent plate-shaped fluid channels, and the scale wiping units continuously do reciprocating motion in the gaps through a driving unit to disturb the side walls of the plate-shaped fluid channels, so that scaling is prevented. According to the plate type temperature adjusting equipment, the temperature of fluid is adjusted, and meanwhile impurities possibly causing crystallization and scaling are removed.

According to the electrochemical hardness removal device capable of rotating and automatically removing the scale, a cathode tube array structure serves as a cathode, the interval g between every two adjacent cathode tubes is set in a narrow size range, and the two adjacent cathode tubes rotate in the same direction, so that rotating and self-removing of the scale on the surfaces of the cathode tubes in the water body electrolytic hardness removal process is facilitated, and the water body hardness removal efficiency is improved. The device is characterized by comprising a cathode and an anode which are arranged in an electrolytic bath, the cathode adopts a cathode tube array structure, two adjacent cathode tubes in the cathode tube array rotate in the same direction, the diameter of each cathode tube in the cathode tube array is 10-300mm, and the interval between the two adjacent cathode tubes is 0.1-1mm; the outer surface of the tube body of each cathode tube is used for scale deposition of the hard water body to be removed, and the cathode tubes realize self-scale removal through rubbing of the scale deposition layers at the intervals.

The utility model discloses a crystallization stirring tank for sodium thiosulfate, and relates to the technical field of sodium thiosulfate production. Comprising a supporting frame, a charging barrel is fixedly connected to the supporting frame, a detachable cover is connected to the top end of the charging barrel, a fixing frame is fixedly connected to the cover, a motor is fixedly connected to the fixing frame, a rotating rod is fixedly connected to an output shaft of the motor, and a stirring rod is fixedly connected to the rotating rod. The connecting sleeves distributed at equal intervals are fixedly connected to the stirring rod, and stirring blades are rotationally connected to the connecting sleeves. The stirring rod and the stirring blades rotate to stir a solution, the stirring efficiency is improved, under the action of the clamping block and the spring, the stirring blades can rotate to adjust the angle, and the contact area with the solution is adjusted according to the stirring requirement, so that stirring is more uniform, the problems of crystal scaling and uneven particle distribution are reduced, and the crystal quality is improved.

The invention discloses spraying desulfurization and dust removal equipment with a waste water recovery structure and a use method, and relates to the technical field of desulfurization equipment, the spraying desulfurization and dust removal equipment comprises a spraying cylinder, a waste water recovery seat and a driving dumping seat, the bottom end of the spraying cylinder is provided with the waste water recovery seat, and the driving dumping seat is installed on the bottom wall of the waste water recovery seat; and the circulating liquid guide frame is connected with the driving dumping seat through a rotating shaft. The inner side of the waste water recovery seat is provided with the precipitation recovery assembly, chemical reagents in the precipitation reagent storage tank are added into the circulating liquid guide frame and react with sulfate in waste liquid to generate insoluble precipitates, and reagents such as calcium salt and barium salt are added in the spraying desulfurization and dust removal process, so that precipitation of sulfate can be promoted, and the precipitation efficiency is improved; the desulfurization and dust removal efficiency can be improved, and the reagent reacts with harmful substances such as sulfur dioxide in the flue gas to generate insoluble compounds, so that pollutants in the flue gas are more effectively removed, and the quality of the absorption liquid is ensured to meet the requirement of recycling.

The invention discloses a self-cleaning MVR (mechanical vapor recompression) evaporator which comprises a heat exchange shell, mounting discs which are spaced up and down are arranged in the heat exchange shell, and a plurality of heat exchange pipes which are distributed in the circumferential direction are connected between the two mounting discs; an upper cleaning assembly is arranged at the upper end of the heat exchange tube; a lower cleaning assembly is arranged at the lower end; the upper cleaning assembly comprises a first upper brush wheel, an upper driving rod, a valve body and a second upper brush wheel; the valve body penetrates through the first upper brush wheel in a sliding manner; an energy storage elastic piece is arranged between the valve body and the upper driving rod; the lower cleaning assembly comprises a first lower brush wheel, a lower driving rod, a reset spring and a second lower brush wheel. The reset spring is arranged between the first lower brush wheel and the second lower brush wheel; and therefore, scaling of the heat exchange tube is effectively delayed, the cleaning frequency of the evaporator is reduced, the production cost is reduced, and the production efficiency is improved.

The invention discloses a modified polyethylene groove type building drainage pipe and a preparation method thereof, and relates to the technical field of plastic pipes. The modified polyethylene groove type building drainage pipe at least comprises the following raw materials in parts by weight: 20-30 parts of silane modified polyethylene; 30-50 parts by weight of high density polyethylene; 5-10 parts by weight of talcum powder; 5 to 15 parts by weight of modified basalt fiber bundles wrapped by polydopamine; 1-5 parts by weight of a lubricant; 3-6 parts by weight of a crosslinking accelerator; and 1-2 parts by weight of an antioxidant. The talcum powder and the modified basalt fiber bundles are added into the silane modified polyethylene and high-density polyethylene cross-linked resin, and the obtained groove type building drainage pipe has the advantages of being high in strength, high in toughness, excellent in temperature resistance and long in service life.

The invention relates to the technical field of evaporators, and discloses a device and method for reducing the use amount of a cleaning solution for soaking a tube nest of an MVR evaporator, and the method comprises the following steps: step 1, discharging materials in the MVR evaporator; 2, opening an electromagnetic pulse valve, discharging steam in the gas-liquid separator into the tube nest through a flushing pipe, and flushing the medicine scale on the inner wall of the tube nest by the steam; and step 3, controlling the electromagnetic pulse valve to enable the steam pulse to wash the tube nest. The steam is used for preliminarily cleaning the medicine scale in the tube nest, so that the subsequent washing and cleaning time and the cleaning liquid consumption can be reduced, and the steam temperature is higher than the drinking water temperature; the steam is gas, so that pressure impact can be formed in the process of washing the tube nest; and a pulse mode is further adopted, so that the flushing effect is improved, and the energy consumption is reduced.

The invention relates to the technical field of seawater desalination, and particularly provides an effect body evaporator, a low-temperature multi-effect distillation seawater desalination system and a low-temperature multi-effect distillation seawater desalination method. When the steam extraction circulating unit extracts steam, the opening degree of a flexible communicating hole in the double-flow-channel heat exchange pipe is gradually increased, so that most of steam entering the heat exchange pipe flows to an intermediate-effect evaporator through a main flow channel; and under the condition that the flow of the steam received by the first-effect evaporator is reduced, the flexible communication hole is gradually reduced, so that most of the steam entering the heat exchange pipe is subjected to heat exchange through the auxiliary flow channel under the action of the steam extraction pressure difference, and therefore, efficient utilization and heat energy recovery of the steam in the low-temperature multi-effect distillation seawater desalination system are realized, and the energy consumption is reduced. And meanwhile, scaling of the outer wall of the heat exchange tube of the first-effect evaporator due to the fact that the heat exchange tube bears the relatively unstable steam change condition can be effectively prevented, and scaling and cleaning difficulty of the first-effect heat exchange tube bundle are greatly reduced.

The utility model discloses a combined end cover with a filter screen suitable for a spiral-wound membrane component, an end cover main body comprises a first inner ring, a first outer ring and first support ribs uniformly distributed between the first inner ring and the first outer ring along the circumferential direction, a water inlet is formed in an area among two adjacent ribs, the first inner ring and the first outer ring, and a water outlet is formed in an area among the first inner ring and the first outer ring. A filter screen is arranged on the water inlet, the filter screen is fixed between the end cover body and a pressing plate through the pressing plate with the structure similar to that of the end cover body, or the filter screen is fixed to the end face of the inner side of the pressing plate in advance, and then the pressing plate is fixed to the end cover body. The filter screen structure is arranged at the water inlet of the end cover, so that when water enters, large particles can be blocked by the filter screen structure and are prevented from entering the water inlet runner of the spiral-wound membrane module, and the anti-pollution and anti-blocking effect is achieved.

The invention discloses carbon monoxide gas oxidative dehydrogenation equipment, which belongs to the field of carbon monoxide treatment and comprises a hollow shell, a gas inlet cover fixedly connected to the upper end of the hollow shell, a bottom plate fixedly connected to the inner wall of the hollow shell and a first exhaust port formed in the lower end of the bottom plate. A first partition plate and a second partition plate located below the first partition plate are further fixedly connected to the inner wall of the hollow shell, and a flow passing cavity is formed between the upper portion of the first partition plate and the air inlet cover. The cooling air ring can exhaust oxygen to the inner wall of the reaction through hole, it is ensured that the oxygen is evenly distributed on the inner wall of the reaction through hole, the oxygen is prevented from being concentrated in a certain area, and therefore the catalytic reaction efficiency is improved; it is ensured that the catalytic reaction is evenly conducted in the whole catalyst, the situation that the reaction efficiency is reduced due to insufficient oxygen or unsmooth airflow in a local area is avoided, and it is ensured that reactants can be fully converted.

The present invention discloses a drying waste gas treatment device for fluffy decorative fabrics, including a transmission pipe and a condenser, wherein the condenser is used to cover the transmission pipe, and a water inlet pipe is integrally provided on the outer side of the condenser near the lower end, and a water outlet pipe is provided on the inner side of the transmission pipe. The present invention provides a condenser on the transmission pipe and covers the local transmission pipe, so that water vapor forms water to avoid being transmitted with the waste gas, thereby reducing the complexity of waste gas treatment; the inner inclined heat exchange tube can rotate under the action of a servo motor, and most of the water vapor passing through is liquefied into water. The water vapor may contain impurities or salts, which may be deposited to form scale when the surface of the inner inclined heat exchange tube is cooled. Rotating the inner inclined heat exchange tube helps to reduce this scaling phenomenon and helps to evenly distribute the water vapor outside the inner inclined heat exchange tube, thereby ensuring that the entire heat exchange tube can effectively perform heat exchange and liquefaction processes.

The invention discloses a PI (polyimide) screen anti-piercing method which comprises the following steps: S1, firstly, leading a screen raw material needing to be produced into a corresponding mold for heating, melting the raw material in a mold cavity for molding, after standing for a period of time, opening the mold, taking out the molded screen, and taking out the molded screen; the screen printing plate is taken out, the taken-out screen printing plate is put into cold water to be cooled, the surface of the screen printing plate is washed through corresponding cleaning equipment, burr grinding treatment is conducted on the cleaned surface, and surface drying can be conducted through drying equipment after grinding is completed. The protection area of a non-pattern area of the PI film can be effectively increased, the service life of the screen printing plate can be effectively prolonged due to the fact that the anti-puncturing leakage film is integrated, and the problem that printing is affected due to the fact that the distance between the anti-puncturing leakage film and lines cannot be well mastered through pure manual pasting and the lines are too close to the lines or the lines are covered is solved. And defects of printed products and waste of printing materials are effectively reduced.

The pesticide spraying device capable of expanding the spraying range comprises a base, a pesticide box is fixedly installed at the top of the base, a rotating rod is rotationally connected into the pesticide box, a rotating disc is fixedly installed on the outer side of a rod body of the rotating rod, a first motor is fixedly installed at the right end of the top of the pesticide box, and a second motor is fixedly installed at the right end of the top of the first motor. And a synchronous belt wheel is fixedly mounted at the output end of the first motor. According to the pesticide spraying device capable of expanding the spraying range, the device can cover a wider crop range through one-time spraying, meanwhile, the device can also be suitable for different types of crops and different terrain environments, pesticide can be accurately sprayed to needed positions, then the usage amount of the pesticide can be reduced, meanwhile, the pesticide applying accuracy is improved, and the pesticide applying efficiency is improved. The pesticide application time can be shortened, the labor cost can be reduced, pesticide can be fully dissolved through stirring, it is ensured that pesticide solutions are evenly mixed, and meanwhile mixing of different pesticides and cross contamination to crops can be avoided through cleaning.

The utility model relates to the technical field of medical waste treatment, and discloses a medical waste incineration treatment system which comprises an incineration treatment production line, and the incineration treatment production line is composed of a feeding mechanism, an incineration mechanism, a waste heat boiler, a composite deacidification tower, a bag type dust collector, a wet deacidification tower and a chimney which are sequentially connected. A dry type quench cooler is integrated on the bag type dust collector, and an air outlet of the dry type quench cooler forms an outlet of the bag type dust collector; the softened water supply system is used for providing cooling water for the incineration mechanism and providing a water source for the waste heat boiler and the composite deacidification tower; and the compressed air supply system is used for providing feeding blowing gas for the composite deacidification tower and providing low-temperature dry gas for the dry quench cooler. The medical waste incineration treatment system has the advantages of being convenient to cool and convenient to supply treatment auxiliary materials.

The invention provides an automatic control method and device for solar printing equipment, a terminal and a storage medium. The control method comprises the steps that the printing wet weight, the grid line width, the grid line height, the slurry viscosity and the silk screen tension are obtained; the printing pressure, the silk screen distance and the printing speed are adjusted according to at least one of the printing wet weight, the grid line width, the grid line height, the slurry viscosity and the silk screen tension; and adjusting the contact angle of the scraper according to the printing wet weight and the slurry viscosity. All the parameters are monitored, all the parameters are integrated to automatically adjust the printing pressure, the silk screen distance, the printing speed and the like in the printing process, manual work is not needed, the production process is strictly controlled, defects in the production process are greatly reduced, and the qualified rate of products is increased.

The invention belongs to the technical field of seawater desalination assistance, and particularly relates to a seawater desalination assistance system capable of relieving the burden of a dialysis membrane, the seawater desalination assistance system comprises an electrolytic tank, a first channel, a second channel and a third channel are arranged in the electrolytic tank from left to right in sequence, and the first channel and the second channel are separated by an anion exchange membrane; the channel II and the channel III are separated by a cation exchange membrane, seawater enters and is discharged from two sections of the channel I, the channel II and the channel III through pipelines and electric control valves, and a water electrolysis device is mounted between the channel I and the channel III. The seawater desalination auxiliary system has the remarkable beneficial effects that firstly, the innovative multi-channel design is combined with the ion exchange membrane, so that the burden of the dialysis membrane is effectively relieved, the service life of the membrane is prolonged, the maintenance cost is reduced, meanwhile, the water electrolysis device and the control system cooperatively operate, accurate regulation and control can be realized according to the real-time state of seawater, and the service life of the membrane is prolonged. The seawater desalination efficiency is greatly improved, and the energy consumption is reduced.

The invention relates to the technical field of heavy salt water treatment, and provides a short-process evaporation pond concentration reduction method and system.The method comprises the following steps that S1, waste water of an evaporation pond is subjected to primary treatment through a sand filtration system and a composite scale inhibitor; s2, concentrating the wastewater subjected to primary treatment by using a primary concentration system, and concentrating the wastewater in a secondary section concentration system; s3, after the wastewater is concentrated, water produced by the second-section concentration system returns to a water inlet of the first-stage concentration system, water produced by the first-stage concentration system enters a second-stage reverse osmosis filtration system, and water produced by the second-stage reverse osmosis filtration system reaches the standard and is discharged or recycled; wherein a membrane material in the primary concentration system is a modified polysulfone membrane. According to the method, short-process evaporation concentration reduction is achieved through the sand filtration system, the composite scale inhibitor and the multi-stage membrane filtration system, the method is simple and convenient, and low-pressure high-power concentration of the wastewater can be achieved.

The invention discloses a method for controlling the C-shaped warping defect of eighteen-roller single-stand high-strength steel, and belongs to the technical field of solving the C-shaped warping defect of a steel plate. The method comprises the following steps: carrying out hot rolling, acid pickling and eighteen-roller reversible rolling on a descaled plate blank of a casting blank, the roller diameter difference between the upper roller diameter and the lower roller diameter of the middle roller of the eighteen-roller reversible rolling mill ranges from 2 mm to 5.5 mm, and the lower roller diameter is larger than the upper roller diameter. According to the method for controlling the C-shaped warping defect of the eighteen-roller single-stand high-strength steel, the roughness of the working rollers, the roller diameter difference of the middle rollers, the rolling force of the rolling mill and the strip steel tension are strictly controlled, the plate shape and stress problems in the rolling process are effectively controlled, and finally the warping height is controlled to be within the range of + / -(0.35-0.5) mm / m.

The invention discloses an anti-corrosion treatment fluid, which is composed of the following components: 30-60% of betaine modified waterborne epoxy resin; 0.3%-8% of triethanolamine; 2%-25% of a curing agent; and the balance of water. The invention further discloses a preparation method of the preservative treatment fluid. The preparation method comprises the following specific steps: (1) preparing betaine with double bonds; (2) preparing betaine modified waterborne epoxy resin; and (3) uniformly stirring the formula amount of betaine modified water-borne epoxy resin, the formula amount of triethanolamine, the formula amount of curing agent and the formula amount of water to obtain the preservative treatment fluid. The invention further discloses the anti-corrosion treatment fluid, and the anti-corrosion treatment fluid prepared by the preparation method is used as an on-line repairing fluid of an underground pipe column for oil exploitation. The method can realize repair of a damaged anticorrosive layer of an anticorrosive oil pipe and anticorrosive maintenance of a non-anticorrosive oil pipe, effectively prolongs the service life of a pipe column, and improves the development effect of a water-driven oilfield.

The high-concentration degradation-resistant wastewater treatment system comprises a hydrolysis acidification tank, an anaerobic reactor, an intermediate water tank, an aerobic granular sludge reaction tank and an MBR (membrane bioreactor) which are sequentially communicated in the wastewater flow direction, part of effluent of the anaerobic reactor flows back to the hydrolysis acidification tank for retreatment, and the rest of the effluent enters the intermediate water tank; the effluent of the middle water tank respectively enters an aerobic granular sludge reaction tank for decarbonization, denitrification and dephosphorization treatment and enters an MBR (Membrane Bioreactor) to make up the demand of denitrification on a carbon source; through coupling linkage and synergistic effect of the hydrolytic acidification reaction tank, the anaerobic reactor, the aerobic granular sludge reaction tank and the MBR bio-membrane reactor, the effluent concentration is controlled. A hydrolysis acidification pool and an anaerobic reactor are combined for internal circulation of a water outlet part, impact of high concentration on the anaerobic reactor is reduced, biogas produced by the anaerobic reactor is used for power generation, energy recovery and energy consumption saving, the purposes of energy conservation and emission reduction are achieved, and the problems that an existing treatment device and technology are tedious in process, long in hydraulic retention time and low in cost are solved. And meanwhile, the treatment effect is improved.

The invention relates to the technical field of ceramic membrane anti-pollution membrane layers, in particular to a ceramic membrane anti-pollution membrane layer for sewage treatment and a preparation process of the ceramic membrane anti-pollution membrane layer. The ceramic material comprises the following raw materials: ceramic powder; nano titanium dioxide; polyether sulfone; a surfactant; an antibacterial agent; an organic solvent; tea polyphenol powder; after the ceramic powder and the nanometer titanium dioxide are subjected to high-energy ball milling to reach the nanometer level, the specific surface area is increased, the silver ion antibacterial agent is continuously released, growth and reproduction of microorganisms on the surface of the membrane are effectively inhibited, biological pollution and blockage are reduced, various components in the tea polyphenol powder act synergistically, the effects of resisting oxidation, resisting bacteria and adsorbing organic pollutants are achieved, and meanwhile, the effect of resisting bacteria is achieved. The stability and solubility of the tea polyphenol powder are further improved through secondary combination of the citric acid, the ceramic powder and the nano titanium dioxide, the overall anti-pollution performance is enhanced, the membrane layer can keep a good anti-pollution effect for a long time in sewage treatment, the service life of the ceramic membrane is effectively prolonged, and the maintenance cost is reduced.

The utility model discloses an MVR (mechanical vapor recompression) evaporation system which comprises a first-effect circulating pump, a first-effect heater, a first-effect separator, a first-effect material transfer pump, a second-effect separator, a second-effect circulating pump, a second-effect heater and a vapor compressor. The second-effect circulating pump, the tube pass of the second-effect heater and the second-effect separator are connected through a pipeline to form a second-effect evaporation circulating unit, the first-effect evaporation circulating unit is connected to the second-effect evaporation circulating unit through a pipeline, and a steam outlet of the first-effect separator and a steam outlet of the second-effect separator are connected to the steam compressor through pipelines. An outlet of the steam compressor is connected to shell sides of the first-effect heater and the second-effect heater through pipelines. Under the condition that the thermal load is not changed, the average effective heat transfer temperature difference is increased by about 20%, and the total heat exchange area is reduced by about 20%; the average boiling point temperature rise is reduced by about 6%, scaling of the separator can be slowed down, and operation flexibility is improved.

The utility model provides an ultraviolet sterilization device and a reverse osmosis system, and relates to the technical field of sterilization equipment, the ultraviolet sterilization device comprises a shell and an ultraviolet generation unit, the shell comprises an overflowing cavity, a water inlet and a water outlet; the ultraviolet generating unit is arranged in the overflowing cavity, the ultraviolet generating unit comprises a lamp panel and a plurality of ultraviolet lamp beads, and the wavelength of at least one ultraviolet lamp bead is different from that of other ultraviolet lamp beads. According to the utility model, the ultraviolet lamp beads with different wavelengths are configured to generate ultraviolet rays with one wavelength or ultraviolet rays with different wavelengths, and the ultraviolet radiation of the ultraviolet rays with different wavelengths can effectively destroy chemical bonds of organic matters and cellular structures of microorganisms; therefore, microorganisms, bacteria, viruses or organic matters and the like in the sewage can be efficiently removed, the problem of membrane pollution and blockage caused by microorganism breeding in the subsequent reverse osmosis process is effectively solved, the service life of the reverse osmosis device is prolonged, and the cleaning difficulty of the subsequent reverse osmosis device is also reduced.

The invention relates to the technical field of sewage treatment, and discloses a ship domestic sewage treatment process and device. The process comprises the following steps: removing large garbage from the ship domestic sewage through a rotary garbage separator, and crushing the ship domestic sewage through a crushing pump to obtain to-be-treated sewage; the sewage to be treated is subjected to A / O biochemical treatment, and biochemical effluent is obtained; carrying out external MBR (Membrane Bioreactor) on the biochemical effluent to obtain a concentrated mixed solution and produced water; the concentrated mixed solution is subjected to reflux A / O biochemical treatment, produced water is subjected to ultraviolet sterilization treatment, and discharged water is obtained. According to the present invention, the ship domestic sewage is treated by using the MBBR reinforced A / O biochemical and external MBR combined technology, the process has good treatment effects of high solid-liquid separation efficiency, small sludge amount, strong nitrogen and phosphorus removal ability and the like, the quality of the produced water is significantly higher than the quality of the produced water produced by using the conventional treatment method, the activated sludge concentration is improved, the equipment volume is reduced, the sewage blocking of the external MBR membrane element is reduced, and the sewage treatment efficiency is improved. And the maintainability of the equipment is improved, and the service life is prolonged.

The invention discloses a complex waste gas comprehensive treatment system, and particularly relates to the related technical field of waste gas treatment.The complex waste gas comprehensive treatment system comprises a barrel, a gas inlet pipe is arranged on the lower middle portion of the outer surface of the barrel, the end, close to the barrel, of the gas inlet pipe extends into the barrel and is provided with a first mounting barrel, and a rotating pipe is arranged in the middle of the bottom wall of an inner cavity of the first mounting barrel; the outer surface of the rotating pipe is provided with a rotating impeller used for rotating by utilizing air flow blown out by the air inlet pipe, the upper end of the rotating pipe extends to the outer side of the mounting cylinder I and is provided with an interception treatment assembly used for improving the waste gas treatment effect, and the middle part of the inner cavity of the cylinder body is provided with a dust removal dispersion mechanism used for pretreatment. By means of the technical scheme, part of particulate matter in waste gas can be removed in advance, solid impurities, liquid films and other obstacles on the inner side of the fixing box can be removed, the smoothness of the fixing box is kept, later maintenance of the device is reduced, the working time of the device is prolonged, the waste gas treatment efficiency is improved, and the working cost of the device is reduced.

The utility model relates to a welding device for a battery cell tab and an adapter piece, and belongs to the technical field of battery processing, the welding device for the battery cell tab and the adapter piece comprises a tray assembly used for bearing a to-be-welded battery cell and the adapter piece; the pressing assembly comprises a tab pressing plate used for pressing a single tab of the battery cell and a lifting plate used for driving the tab pressing plate to ascend and descend, and the tab pressing plate is provided with a receding hole for exposing the tab and allowing the welding head to enter for welding; and the dust collection assembly comprises a dust collection head and a position adjusting mechanism connected with the dust collection head and the lifting plate, and the position adjusting mechanism is used for adjusting the position of the dust collection head so that a dust collection opening of the dust collection head can be in butt joint with the receding hole. According to the welding device, the situation that in the welding process of the battery cell tab and the switching piece, the battery cell tab is repeatedly pressed, and the shape of the tab is changed can be avoided, meanwhile, the tab pressing plate and the welding head can be effectively cleaned, and the situation that the battery cell is secondarily polluted by dust is reduced.