48results about How to "Reduce material consumption" patented technology

The utility model discloses an external liquid seal desulfurizing tower overflow device which comprises a desulfurizing tower main body, an inlet flue is connected onto the desulfurizing tower main body, an overflow port is arranged on the tower wall of the desulfurizing tower main body, the overflow port is connected with an overflow inclined pipe, an included angle alpha is formed between the overflow inclined pipe and the horizontal plane, the upper end of the overflow inclined pipe is connected with a discharge pipe, and the lower end of the discharge pipe is connected with a liquid outlet. The lower end of the discharge pipe is inserted into the liquid level of the liquid collecting pit, the liquid collecting pit is located on the lower portion of the discharge trench, and nozzles are arranged on the periphery of the bottom of the liquid collecting pit and connected with a process water pipe. The overflow device is simple in structure, the overflow inclined pipe is obliquely arranged without scaling, and the overflow device is maintenance-free; the overflow pipe is balanced with the pressure in the tower, and easy-to-bubble substances floating on the liquid level directly overflow and are discharged, so that the problem of bubble overflow of slurry is thoroughly solved, the field environment quality is improved, the labor intensity is reduced, and the material consumption is reduced.

The invention discloses a cationic dye dyeable regenerated polyester fiber and a preparation method thereof, and relates to the technical field of polyester fibers, the cationic dye dyeable regenerated polyester fiber comprises the following components: waste polyester, sodium bis (2-hydroxyethyl) isophthalate-5-sulfonate and long-chain dihydric alcohol, the method comprises the following steps: mixing waste polyester, sodium bis (hydroxyethyl) isophthalate-5-sulfonate and long-chain dihydric alcohol according to a certain mass ratio, extruding the mixture in a twin-screw extruder, carrying out semi-depolymerization on the waste polyester by using the sodium bis (hydroxyethyl) isophthalate-5-sulfonate and the long-chain dihydric alcohol to obtain a semi-depolymerization product which is low-molecular-weight polyester with a hydroxyl-terminated structure, feeding the low-molecular-weight polyester into a polycondensation reactor, and carrying out condensation polymerization on the low-molecular-weight polyester with the hydroxyl-terminated structure to obtain the low-molecular-weight polyester with the hydroxyl-terminated structure. The prepared modified polyester can be directly spun or spun after being diced, and the prepared polyester fiber has a cationic dye normal-pressure dyeable effect, can remarkably reduce dyeing energy consumption and material consumption, has good hygroscopicity, improves wearing comfort and can be widely applied to the fields of clothes, home textiles and the like.

This utility model discloses an integrated transition yaw connection system for wind turbines, belonging to the technical field of wind power generation equipment. The system includes a wind turbine tower, a slewing bearing, a short-section cylinder, and a lower platform. The wind turbine tower has a truss-type hollow structure. The short-section cylinder is vertically arranged and its top is welded to the lower platform as a whole. Its bottom is connected to the top of the tower through the slewing bearing. This utility model uses a hierarchical structure of truss tower-slewing bearing-short-section cylinder-platform. It utilizes the short-section cylinder to distribute the nacelle load and compensate for installation errors. Combined with the slewing bearing, it achieves low-friction and stable yaw. This structure effectively solves the problems of heavy self-weight, obvious yaw vibration, complex assembly, and easy wear of connection parts of traditional wind turbine towers. It has the advantages of lightweight, stable yaw, convenient installation, and long service life.

The invention belongs to the technical field of metal separation, and particularly relates to a deep eutectic solvent, a preparation method and application thereof, and a method for selectively extracting lithium from a lithium battery positive electrode material. According to the deep eutectic solvent provided by the invention, nearly 100% selective leaching of lithium is realized in an extremely short time, and Ni, Co and Mn are almost not leached, so that the bottleneck that the rate and the selectivity are difficult to obtain at the same time in a traditional method is broken through; and the process conditions are mild and efficient, are far superior to the traditional process and are more suitable for practical industrial application, and the energy consumption and material consumption are remarkably reduced.

The utility model relates to a kind of suspension bed frame and the suspension soft bed of application thereof, solve the problem that the supporting leg of bed frame or bed product is exposed and affects visual effect existing in prior art, the technical scheme used is: including bed board, the supporting leg of supporting bed board, and the bed backrest being set in the one end of the bed board, it is characterized in that the three edges of the bed board are provided with the bed frame enclosed by left side plate, right side plate and tail plate, the bed backrest closes the opening of the bed frame, the lower end of the bed frame is higher than the lower end of the supporting leg, and the bed frame hides the supporting leg.Its effect: by bed backrest and bed frame cooperation, so that bed frame or bed product is used, supporting leg is hidden in the interior of bed frame, not bare, form "suspension" effect, to improve the overall quality of bed frame, bed product and bed product use space.

This invention relates to the field of flue gas pollution control technology in coal-fired power plants, and discloses a method for total pollutant emission reduction in an environmental protection island based on morphological transformation and residual compensation. The method includes: acquiring real-time operating data of a smart environmental protection island in a coal-fired power plant, generating a time-series feature vector, and setting inlet boundary conditions; constructing a pollutant morphological transformation mechanism model for each environmental protection subsystem, inputting relevant data and inlet boundary conditions, and calculating the theoretical baseline concentration of pollutants; using an LSTM as an error-compensated prediction model, after training with historical data, inputting the current operating condition time-series feature vector to obtain the concentration prediction residual value, obtaining the deviation between the historical training conditions and the current operating conditions, calculating the confidence factor, and generating a mixed pollutant prediction concentration; finally, using ammonia injection flow rate and other factors as optimization variables, setting constraints, and constructing an objective function with the lowest total cost to obtain the optimal control parameter set, thereby achieving optimized control and pollutant emission reduction of the environmental protection subsystem. This invention significantly improves the pollutant emission reduction effect.

The invention discloses a conveying device and a conveying system.The conveying device comprises a solid tray conveying assembly, an empty tray conveying assembly, a first conveying assembly, a second conveying assembly and a first push-pull assembly, and the empty tray conveying assembly is arranged on the lower side of the solid tray conveying assembly; the first conveying assembly has a first state in butt joint with the solid tray conveying assembly and a second state in butt joint with the empty tray conveying assembly, the first push-pull assembly is arranged on the lower side of the empty tray conveying assembly and can reciprocate in the conveying direction of the empty tray conveying assembly, and the conveying device is configured to respond to the first conveying assembly to be switched to the second state. In the second state, the first conveying assembly and the empty tray conveying assembly are arranged in a staggered mode in the conveying direction of the empty tray conveying assembly, and the first push-pull assembly can drive the empty trays on the first conveying assembly to the empty tray conveying assembly. The conveying device can improve the overall logistics efficiency and the automation level, and manual intervention can be reduced.

This utility model discloses an outdoor unit for an air conditioner, comprising: a casing; a partition; a compressor; a heat exchange component; an outdoor fan; and an electrical control box. The electrical control box includes: a control box body; a circuit board; a power module; a refrigerant radiator connected to the heat exchange component, used to dissipate heat from the power module; and a heat dissipation substrate disposed within the control box body and located on the side of the refrigerant radiator closest to the circuit board, used for heat conduction between the power module and the refrigerant radiator. The heat dissipation substrate includes: an insulating main board with a heat dissipation area corresponding to the power module; and a heat dissipation component, which is a sheet metal component disposed on the insulating main board and located within the heat dissipation area. Therefore, by designing this outdoor unit, material consumption of the heat dissipation component can be reduced while ensuring heat dissipation effect, and the creepage distance problem can be solved, thereby improving economy and safety.

The present application relates to the technical field of noble metal production, and discloses a drying method for preparing beta-type ruthenium trichloride, which adopts a drying and stirring device and comprises the following steps: step 1, beta-type ruthenium trichloride solution is added into a tank; step 2, a driving motor drives a stirring shaft to stir the solution at a rotating speed of 150-180 r / min, and meanwhile, an infrared lamp is used to heat the solution until the solution is skinned; step 3, when the solution is skinned, the rotating speed of the driving motor is adjusted to 100-120 r / min, the infrared lamp continues to heat, and the solution is slurried; step 4, when the solution is slurried, the rotating speed of the driving motor is adjusted to 50-80 r / min, the infrared lamp continues to heat, and the solution is agglomerated. Different rotating speeds of the motor are adopted at different stages of the material, the heat transfer efficiency of the material is ensured, the drying efficiency is accelerated, and the material consumption and energy consumption are reduced.

The application discloses a method for continuously preparing high-purity sulfolane, and belongs to the technical field of organic synthesis. By introducing a solvent and a stable free radical type polymerization inhibitor, the self-polymerization of butadiene is effectively inhibited. By adopting a cooling crystallization mode to remove sulfur dioxide, the thermal decomposition of sulfolene sulfone is avoided, high yield and high purity are realized, the service life of a hydrogenation catalyst is not affected, and the catalyst can be completely reused. The cooling crystallization also realizes the separation of the polymerization inhibitor and sulfolene sulfone. The polymerization inhibitor is dissolved in the solvent and recycled, and does not enter the hydrogenation system, so that the final sulfolane product has a purity of above 99.9% and has no chromaticity problem. The process saves energy consumption, the solvent has wide universality, operation is simple, the process is safe and environment-friendly, easy to scale up, and meets the green production requirements.

The invention discloses a substance exploration scheme iterative generation system and method, and relates to the technical field of substance exploration scheme generation. The material exploration scheme iteration generation system is provided with a Controller layer, a Service layer, a robot and workstation gateway, at least one workstation, at least one robot, a DAO layer and an algorithm analysis and parameter optimization module. According to the invention, full-process automatic closed loop from task parameter submission, instruction generation, equipment cooperative execution, data storage to model training and formula prediction is realized, manual intervention is not needed, manpower input and material consumption are reduced, experiment efficiency and result accuracy are improved, traceability of experiment data and system stability are guaranteed, and the system is suitable for large-scale popularization and application. The problems that in a traditional material science experiment, manual experience is relied on, task issuing and instruction conversion efficiency is low, errors are prone to occurring, experimental data collection and analysis are lagged, and parameter optimization lacks an automatic mechanism are solved.

The invention relates to the technical field of flue gas treatment, in particular to a flue gas ultra-low emission system and method based on chemical looping combustion, and the flue gas ultra-low emission system comprises an in-furnace in-situ desulfurization unit, a cyclone separator, a nitrogen oxide removal unit, a dust removal unit, an out-furnace desulfurization unit and a recirculation unit which are connected in sequence in the flue gas flowing direction; wherein the nitrogen oxide removal unit is arranged in a flue between the cyclone separator and the dust removal unit; and part of recycled flue gas treated by the dust removal unit and / or the recycling unit is at least used for diluting or atomizing a denitration reducing agent in the nitrogen oxide removal unit, and / or returns to a chemical looping coal feeding system. According to the invention, through creative connection relations and medium circulation paths among the units, the beneficial effects of ensuring carbon capture advantages, efficiently purifying special pollutants, realizing internal circulation integration of the system, having good economy and the like are generated.

Provided are an early pregnancy testing pen casing and an early pregnancy testing pen. The early pregnancy testing pen includes an early pregnancy testing pen casing, a test strip (3), and a water absorption piece (4). The early pregnancy testing pen casing includes a first casing body (1) and a second casing body (2). The second casing body (2) is divided into a functional section (21) and a handheld section (22) arranged in a length direction of the second casing body (2). The first casing body (1) is opposite to the functional section (21) so that an accommodating space for accommodating the test strip (3) is formed between the first casing body (1) and the functional section (21). The accommodating space has an opening for the water absorption piece (4) located in the accommodating space to extend out of the early pregnancy testing pen casing through the opening. The handheld section (22) is used for being held by a user, and the handheld section (22) does not overlap the first casing body (1). The present application reduces the material consumption.

The invention provides a biotin fermentation process optimization control method, system and device and a storage medium, and relates to the technical field of biotin ferment.The optimization control method comprises the steps that in the biotin fermentation process, basic data of a fermentation control system is obtained; the basic data comprises temperature data in the fermentation tank, monitoring data reflecting the state of fermentation liquor and dissolved oxygen concentration data in the fermentation liquor; based on the basic data, corresponding control processes are executed respectively; the control process comprises a temperature control process, a pH value dynamic prediction control process and a dissolved oxygen multi-parameter cascade control process. According to the method, the stability of the production process is integrally enhanced, the automation level and the product consistency are improved, the dependence on artificial experience is reduced through closed-loop intelligent cooperative operation of the three processes, a highly stable environment is created for thallus growth and product synthesis, and the production efficiency is improved. Therefore, the final yield, purity and reproducibility among production batches of biotin B5 are directly improved, and comprehensive energy consumption and material consumption are reduced.

The utility model relates to a battery cell top cover, which can improve the overall stability of the battery cell top cover by fixedly arranging a pole assembly in a top cover assembly. The accommodating groove communicated with the mounting guide hole is formed in the pole assembly, so that the material consumption of the pole assembly is successfully reduced, the weight of the pole assembly is reduced, the tab of the external battery cell can penetrate through the mounting guide hole and then enter the first accommodating cavity, and an accommodating space can be provided for the tab of the external battery cell. Through the arrangement, on the premise of realizing correct connection between the external battery cell and the battery cell top cover, the internal occupied space of the battery cell is also reduced, so that the lightweight design of the battery cell is better realized.

This invention discloses a method for synthesizing carboxymethylcysteine, belonging to the field of organic synthesis technology. The method includes steps such as raw material dissolution, condensation reaction, neutralization crystallization, and centrifugal drying. The method of this invention directly neutralizes the reaction solution to the target pH with concentrated hydrochloric acid, stirs to precipitate crystals, and centrifuges and filters to directly obtain a qualified product, eliminating the need for multiple crystallization purifications. This reduces processes and equipment, increases yield, reduces material consumption, and significantly lowers process costs. The purity of the obtained product reaches over 99.90%, the residue on ignition content is as low as 0.05%, and the contents of cysteine, cystine, lactam, dicarboxymethylcysteine, and ammonium salts are extremely low; moreover, the yield reaches over 95%. The method of this invention operates under mild conditions, with no harmful gas emissions, and is equipment-friendly.

This invention belongs to the field of waste battery recycling, and specifically relates to a method for recycling and processing black powder from waste ternary lithium batteries. The method includes the following steps: S1 Primary acid washing: Mixing nickel- and cobalt-containing aluminum slag (aluminum slag 1) with sulfuric acid at an initial pH of 4-5; S2 Solid-liquid separation I: Separating the mixture obtained in S1 into a filtrate rich in nickel sulfate and cobalt sulfate, and aluminum slag 2; S3 Back-conditioning of filtrate 1; S4 Precipitation and recovery of aluminum slag 2. The technical solution of this invention achieves efficient recovery of valuable metals and deep purification of impurity metals, solving the technical bottleneck of traditional hydrometallurgical processes where these two aspects are difficult to balance. This invention elevates a traditional wastewater and waste residue treatment process into an advanced process system that achieves efficient resource conversion, internal recycling synergy, and a win-win situation for both economic and environmental benefits. It has significant application value in the field of non-ferrous metal resource recycling, especially in the field of lithium-ion battery recycling.

The utility model provides an air conditioner indoor unit and a supporting assembly thereof. The supporting assembly comprises vertically-arranged supporting columns, the supporting columns are arranged on the front side of the front end of a rear panel of the air conditioner indoor unit at intervals, the lower ends of the supporting columns are used for being fixedly connected to a base of the air conditioner indoor unit, and the upper ends of the supporting columns are used for being fixedly connected to an air duct assembly of the air conditioner indoor unit. The at least two supporting columns are arranged in the width direction of the air conditioner indoor unit at intervals. The supporting assembly can share part of gravity of the air duct assembly and effectively and firmly support the front portion of the air duct assembly, and therefore the stability of the whole air conditioner is improved.

The invention discloses a method and equipment for processing and producing second-class base oil by taking first-class base oil regenerated by waste lubricating oil as a raw material, and belongs to the technical field of regenerated lubricating oil. Atmospheric and vacuum distillation is combined with NMP solvent refining, and the waste lubricating oil is regenerated into qualified first-class base oil to serve as an exclusive raw material; preheating the raw material to 60-80 DEG C under the protection of nitrogen, and introducing the preheated raw material into an adsorption column at a flow rate of 0.5-2.0 BV / h, so that the raw material sequentially passes through a macroporous silica gel layer (the particle size is 0.1-1.5 mm) and an active white clay layer (the mass ratio of the macroporous silica gel layer to the active white clay layer is 2: 1) with specific parameters, and deep synergistic adsorption refining is carried out; after the refined oil enters a storage tank, vacuum is applied to suck residual oil in the column into the tank, and second-class base oil is obtained after heat preservation sedimentation and precise filtration. Under the mild non-hydrogenation condition, high added value upgrading of the waste lubricating oil is achieved, and the method has the comprehensive advantages of being efficient in process, high in product yield, stable in quality and low in energy consumption and cost.

The invention relates to the technical field of ethane cracking, in particular to an anti-blocking quench tower of an ethane cracking device, which comprises a tower body, two sections of random packing and one section of structured packing are sequentially arranged in the tower body from top to bottom, an angle steel tray is arranged below the structured packing, a vapor-liquid two-phase feeding distributor is arranged below the angle steel tray, and the gas-liquid two-phase feeding distributor is arranged below the angle steel tray. The invention has the following beneficial effects: the outlet pressure of the furnace tube of the cracking furnace is low, the cracking hydrocarbon pressure is low, the ethylene product selectivity of the cracking furnace is improved, and the material consumption is reduced; separation of heavy components and diluted steam in the quench tower is facilitated; low-level heat of pyrolysis gas can be recovered, and heat exchanger load between compressor sections can be reduced; mass transfer and heat transfer in the quench tower are facilitated, and the mass transfer and heat transfer efficiency of the tower is improved; heavy components, styrene and the like in the tower can be prevented from being subjected to polymerization reaction to generate a polymer to block a filler layer; the production of the device is not limited, and full-load or overload production can be met.

This invention relates to the field of hydrogen peroxide technology and discloses a system and method for preparing hydrogen peroxide. The system includes a hydrogenation unit, an oxidation unit, and an extraction unit connected in sequence. The hydrogenation unit includes a fixed-bed reactor, comprising: a reactor body; a liquid phase inlet, N gas phase inlets, a liquid phase outlet, and a gas phase outlet arranged sequentially from bottom to top on the reactor body; and N catalyst bed sections and a gas-liquid separation component arranged sequentially from bottom to top within the reactor body; N is a natural number and N≥2; a gas distributor is provided below each catalyst bed section and is connected to the gas phase inlet; the gas-liquid separation component is divided into a two-phase zone, a liquid phase zone, and a gas phase zone; the liquid phase zone has a liquid phase outlet; and the gas phase zone has a gas phase outlet. Using this system to prepare hydrogen peroxide can significantly improve hydrogenation efficiency and hydrogenation selectivity, has good safety, effectively improves the selectivity of the hydrogenation reaction and the efficiency of the device, and extends the service life of the catalyst.

The application provides a material crushing and grinding device, and relates to the technical field of crushing equipment. The device comprises a device shell, an isolation plate fixedly arranged in the inner cavity of the device shell to separate the inner cavity of the device shell into an upper chamber and a lower chamber, a crushing chamber cylinder arranged in the upper chamber, a crushing chamber formed in the crushing chamber cylinder, a cutter assembly arranged in the crushing chamber, a planetary gear train comprising a sun gear arranged below the crushing chamber cylinder and a plurality of planetary gears engaged with the gear teeth of the sun gear, an inner tooth ring fixedly arranged on the inner wall of the crushing chamber, the gear teeth of the inner tooth ring being engaged with the gear teeth of the plurality of planetary gears, a driving device arranged in the lower chamber, and a cutter shaft of the cutter assembly, the cutter shaft passing through the rotation shaft center of the sun gear and being fixedly connected with the rotation shaft of the sun gear, the end of the cutter shaft passing through the isolation plate and being fixedly connected with the driving output end of the driving device. The application can effectively improve the crushing and grinding effect, improve the efficiency and reduce the power consumption.

The invention discloses a design method of a steel rail impedance simulation disc and a broken rail monitoring equipment test system, and the method comprises the steps: dividing the steel rail impedance into steel rail equivalent resistance and steel rail equivalent inductance, and calculating the steel rail equivalent resistance and steel rail equivalent inductance through the correlation between the resistance and the frequency and the correlation between the inductance and the frequency; correcting according to standard regulation or data acquired on site to obtain a steel rail impedance equivalent model, and manufacturing a steel rail impedance simulation disc according to the obtained steel rail impedance equivalent model; a test device composed of a steel rail impedance simulation disc and a steel rail fracture simulation module and a tested device jointly form a broken rail monitoring device test system. According to the invention, the simulation of the real steel rail is realized by adopting the simulation steel rail impedance, the laboratory test technology is utilized, the consumption of manpower and material resources is reduced, the test efficiency is improved, repeated experiments and experiment reproduction are easier to carry out in a laboratory, and the method has better scientificity.

The application belongs to the technical field of metallurgy, and particularly relates to a tungsten-molybdenum waste recovery method. The method places waste tungsten material or waste molybdenum material in an electrolysis system with sodium hydroxide or ammonia water as an electrolyte, and electrolyzes the waste tungsten material or waste molybdenum material as an anode to efficiently dissolve tungsten and molybdenum in the form of ions, so as to obtain an alkaline electrolyte rich in tungstate and molybdate; and then the electrolyte is subjected to subsequent treatment to recover corresponding products, thereby realizing the unity of process shortening, environmental friendliness and efficient resource recovery.

This invention provides a biological filter media ceramic particle for removing perchlorate from water and its preparation method. The preparation method of the biological filter media ceramic particle of this invention includes mixing the filter media ceramic particle with an iron modifier and performing a shaking treatment to obtain iron-modified biological filter media ceramic particle. The iron modifier impregnation of the biological filter media ceramic particle ensures sufficient contact between iron ions and the biological filter media ceramic particle, thereby loading the iron ions onto the biological filter media ceramic particle. The modified biological filter media ceramic particle can remove phosphorus, ammonia nitrogen, and COD, and also enhances the adsorption capacity of the biological filter media ceramic particle for perchlorate, which can significantly improve the removal efficiency of the biological filter media ceramic particle for perchlorate.

The present application belongs to the field of TiAl intermetallic compound, and relates to a TiAl alloy composition and a preparation method of high-performance TiAl alloy low-pressure turbine blade. Based on a TiAl alloy composition, the alloy is first made to have fine grain structure through reasonable extrusion + recrystallization annealing process, then the special molybdenum alloy die and the process method of vacuum isothermal die forging are adopted, so that the brittle material realizes the forming of blade structure at high temperature and low speed, and the technical bottleneck problems such as large blade machining allowance, serious material waste, uneven blade structure, unstable mechanical properties of parts and the like caused by the need of machining preform of TiAl alloy at high temperature and preheating at low temperature during the near isothermal forming in the conventional preparation method are solved, and the blade quality is significantly improved and the manufacturing cost is saved. The machining allowance of the TiAl blade die forging part of the present application is only 2mm, and the raw material consumption can be saved by about 30%.

The utility model discloses a kind of pull-out type discharge covers of heating and humidifying equipment, it includes discharge cover frame body, discharge cover frame body includes symmetrically arranged left metal baffle and right metal baffle, rear end of left metal baffle and right metal baffle is connected together by rear metal baffle, front end of left metal baffle and right metal baffle is connected together by flexible curtain, so that left metal baffle, right metal baffle, rear metal baffle and flexible curtain are enclosed into the material conveying channel that heating and humidifying equipment discharge end is communicated with vibrating trough feed end, the surface of left metal baffle, right metal baffle and rear metal baffle is evenly arranged with metal net, the top of left metal baffle, right metal baffle is evenly arranged with push-pull slide rail.The utility model has the characteristics of reasonable structure design, strong practicality, convenient to use, small maintenance difficulty etc.

The utility model provides a kind of combined retaining structure of micro pile plus anchor rod belongs to foundation pit supporting technical field, including steel pipe pile, further include: rectangular steel pipe, insert in the inside of steel pipe pile, concrete crown beam, fixed in the outside of steel pipe pile top end, prestressed anchor rod is inserted in the inside of concrete crown beam, the side of concrete retaining board close to the top end of foundation pit cushion is equipped with water interception ditch, expansion structure, is set at the bottom of the outside of steel pipe pile, positioning structure, it is set at the outside of steel pipe pile.In the utility model, prestressed anchor rod and steel pipe pile are combined by concrete crown beam, give full play to the vertical supporting effect of steel pipe pile and the horizontal pull together effect of prestressed anchor rod, while crown beam has the double function of connecting steel pipe pile and being anchor block of anchor rod, whereby the function of the device efficient stable support foundation pit is realized, so that supporting structure rigidity is greater, integrity is stronger.

The utility model discloses an adjustable welding tool for a gas collecting pipeline of a container. The adjustable welding tool solves the problems that in the prior art, the pipeline welding quality is poor, and the installation efficiency is low. According to the technical scheme, the adjustable welding tool for the gas collecting pipeline of the container comprises a limiting plate frame and a tool valve; the limiting plate frame comprises a supporting frame and a limiting plate, the limiting plate is fixed to the supporting frame, a main valve positioning hole and a plurality of valve positioning holes arranged in rows and columns are formed in the limiting plate, and the tool valves are adjustably installed in the valve positioning holes. The tool valve is adjusted in real time by surveying and mapping different container gas collecting pipes in the early stage, and the welding and mounting quality and efficiency in the later stage are improved; the welding tool for the container gas collecting pipeline can realize continuous maintenance of the container, reduces manpower transfer and material resource consumption, improves the production quality of the pipeline, and improves the overall installation efficiency.

The invention discloses a method for increasing the yield of xylene through methylation of toluene and methanol. The method comprises the following steps: (1) mixing toluene and methanol, feeding the mixture into a first reaction zone, contacting the mixture with an aromatic methylation catalyst in the presence of hydrogen, and carrying out a gas-phase methylation reaction to obtain a first material flow; and (2) introducing the first material flow into a second reaction zone, contacting the first material flow with a methyl transfer catalyst in the presence of hydrogen, obtaining a second material flow through a liquid-phase methyl transfer reaction, and separating to obtain a xylene product. The method provided by the invention can improve the selectivity of xylene and the conversion rate of toluene.