154results about How to "Reduced footprint" patented technology

An integrated cleaning and liquid supply device and online cleaning method for polyurethane polishing pads are disclosed. The device includes a base, a rotating seat, a swing arm, an independent liquid supply pipeline system and cleaning pipeline, a high-pressure nozzle array, and a positioning sensor assembly. During the polishing stage, polishing liquid is dripped through the liquid supply outlet. During the cleaning stage, the swing arm moves centripetally to a preset position aligned with the center of the polishing pad. The positioning sensor triggers a high-pressure pump, causing pure water to be sprayed as an atomized jet along the diameter of the pad surface through the high-pressure nozzle array. Simultaneously, the polishing pad rotates at a low speed, utilizing the synergistic effect of centrifugal force and high-pressure water flow to thoroughly remove residual contaminants within the micropores of the polyurethane. This invention integrates liquid supply and deep cleaning functions into the same motion mechanism, eliminating the need for machine shutdown or manual intervention. It offers advantages such as non-contact, non-destructive, thorough cleaning, and high automation, extending the life of the polishing pad and improving the stability of the CMP process.

The application provides an automobile engine compartment drainage air intake system and a vehicle, and belongs to the technical field of automobile parts, wherein the automobile engine compartment drainage air intake system comprises a ventilation cover plate, an air chamber, a left drainage groove structure and a right drainage groove structure; the middle part of the top plate of the air chamber is concave downward, and an accommodation space extending along the length direction of the air chamber is formed between the top plate and the ventilation cover plate; the left drainage groove structure is arranged below the ventilation cover plate; the right drainage groove structure comprises a drainage groove body, the drainage groove body is arranged in the accommodation space, and the opening of the drainage groove body is communicated with the water inlet. The automobile engine compartment drainage air intake system provided by the application correspondingly sets the drainage groove structure as the left drainage groove structure and the right drainage groove structure; two drainage groove structures are used for drainage respectively, so that the drainage groove structure does not span the width direction of the vehicle body, the space occupation area of the drainage groove is smaller, the size of the engine compartment is reduced, the layout in the engine compartment is optimized, and the engine compartment maintenance is facilitated.

This invention proposes an active energy storage type multi-winding transformer-type adjustable reactor and its control method, belonging to the technical field of power electronics and flexible AC transmission and distribution systems. It includes a multi-winding transformer, whose primary winding is electrically connected to the AC power grid; at least one set of thyristor hierarchical switching circuits, which are connected in series with the corresponding thyristor-switching windings on the secondary side of the multi-winding transformer; the AC side of a PWM inverter control circuit is electrically connected to one of the active control windings on the secondary side of the multi-winding transformer; an energy storage module is connected in parallel on the DC side of the PWM inverter control circuit to inject a compensation current containing reactive and active components into the active control winding, thereby achieving continuous fine-tuning of the equivalent reactance value and active power exchange with the AC power grid. This invention can be applied as a multifunctional power electronic device in fields such as smart grids, new energy transmission and distribution, and comprehensive power quality management.

This utility model discloses a lifting AGV transport vehicle, including a chassis with steering wheels mounted around the bottom of the chassis; a four-gantry synchronous lifting system mounted on both sides of the chassis, comprising four sets of vertically synchronously moving sliding frames; a roller conveyor fixedly mounted on the four sets of sliding frames; a cover fixed on both sides of the chassis; a control box fixedly mounted on one side of the cover; and a laser radar fixedly mounted on the center of the four sides of the chassis, communicating with the control box. In this utility model, a large-stroke vertical adjustment is achieved through a hydraulic system, enabling precise docking with roller conveyors of different heights without the need for additional transfer stations or external lifting equipment. This achieves automatic cross-layer transport, improving the flexibility of the logistics system. Furthermore, the four-gantry synchronous lifting system is equipped with a synchronous chain and sprocket transmission mechanism, converting the linear motion of the hydraulic cylinder into the synchronous lifting of the sliding frames, effectively avoiding platform tilting caused by hydraulic fluctuations or mechanical deviations.

This invention belongs to the field of conveying equipment technology, specifically disclosing a conveying device and method for egg supply, including a conveyor belt machine, a chamber, and a blower. The conveyor belt machine's external belt consists of three sets of circular tracks that wrap around the conveyor belt machine. The circular tracks have notches spaced evenly along their circular paths. The chamber is fixedly installed above the conveyor belt machine and near its center. A ventilation component is installed above the chamber. A U-shaped frame is fixedly mounted above the conveyor belt machine and below the ventilation component. A crack visual detection marking component is installed above the U-shaped frame and corresponding to each circular track. This invention integrates wiping, flipping, drying, visual detection, and marking functions, enabling online identification and marking of cracked eggs produced after cleaning. This effectively prevents cracked eggs from being mixed with qualified products, significantly improving the overall quality and automation level of egg supply.

The utility model discloses a high-rigidity half-moon groove tool rest unit of a combined lathe and the combined lathe, belongs to the technical field of numerical control combined lathes, and solves the problems that a traditional linear guide rail feeding structure is large in occupied space, poor in rigidity and unstable in machining quality. The tool rest unit comprises a tool rest body, and a guide groove is formed in the circumferential face of the tool rest body and axially penetrates through the tool rest body. A sliding groove plate matched with the guide groove is arranged in the guide groove. The sliding groove plate is shorter than the guide groove and used for bearing a cutter. And the section of the guide groove is half-moon-shaped. Limiting plates are installed on the portions, on the two sides of a groove opening of the guide groove, of the tool rest body respectively, and the limiting plates are pressed on the sliding groove plates so as to limit movement of the sliding groove plates in the radial direction. Due to the fact that the sliding groove and the sliding groove plate are arranged on the peripheral face of the tool rest body, occupied space is reduced, and rigidity and transmission efficiency of the whole structure are improved. The tool rest unit is matched with a narrow space scene of a multi-spindle lathe, and the machining requirements of high precision and high efficiency are met.

The present application belongs to the technical field of water treatment, and discloses a water treatment method and system adopting unidirectional pulse high-voltage electric field discharge oxidation, alternating current electric field fixed spiral wing fin static disturbance electric field microflocculation, conventional magnetic field separation, and anaerobic reduction reaction. A pressurizing water pump is installed in series at the outlet of a water source, and the treated water enters the unidirectional pulse high-voltage electric field discharge oxidation device, the alternating current electric field fixed spiral wing fin static disturbance microflocculation device, and the magnetic separation device in sequence through pressurization, and then enters the conical bottom anaerobic reduction reaction water tank, and is supplied to the user after pressurization by the outlet pressurizing pump; when the magnetic separation device is saturated, the backwashing process is started, the backwashing adopts steam-water backwashing, the backwashing sewage enters the conical bottom anaerobic reduction reaction water tank, a backflow submersible metering pump is arranged at the upper half of the water tank, the outlet of the metering pump is connected to the water inlet of the unidirectional pulse high-voltage electric field discharge oxidation device and is provided with an electromagnetic valve, and is used for strengthening the oxidation microflocculation again, thereby saving the cost of the traditional process by 50-80%.

The utility model provides a kind of installation device for wall pre-buried repeated grounding, and the grounding busbar and connecting body are connected in accommodating cavity by setting installation frame, installation frame is composed of two side plates and transverse plate and open-close mechanism that can be opened and closed, open-close mechanism opens, grounding busbar and connecting body are placed in installation frame, then open-close mechanism is closed, grounding busbar and connecting body are sleeved, open-close mechanism is in the back inner wall side of accommodating cavity;Using tool abutting clamping mechanism's resistance rod, so that grounding busbar and connecting body are tightly connected.The above technical scheme is adopted, the setting of open-close mechanism, when using, open-close mechanism can be directly entered from the opening side of accommodating cavity, and grounding busbar and connecting body are placed in installation frame, reduce the space occupation area when sleeving grounding busbar and connecting body;Resistance rod is provided with insertion hole, can be connected with the tool of screwing, compared with fixed rotating screw rod, it can extend outside accommodating cavity when screwing, and it is easier to exert force.

An automatic bus duct riveting system, comprising a clamping structure, a feeding position for placing the bus duct to the clamping structure, a riveting structure and a feeding structure for conveying the riveted bus duct; the clamping structure comprises a clamping support, a rotary frame body rotatably connected with the clamping support, a plurality of rotatable bases on the rotary frame body and a clamping device on the base; the rotary frame body rotates to realize the circulation of the bus duct between the feeding position and the riveting structure, and the rotatable base rotates to adjust the riveting direction of the bus duct; the riveting structure comprises a mechanical arm, a riveting device detachably connected with the end of the mechanical arm and a grabbing device; the mechanical arm switches the working end through a quick-change device, and after riveting, the grabbing device is replaced to move the bus duct to the feeding structure. The present application solves the problems of manual handling for work position switching and secondary clamping for riveting surface switching through the clamping structure; solves the problems of riveting and sequence splitting and equipment redundancy through the riveting structure, reduces the dependence on manual operation, and improves the production efficiency and processing precision.

This invention belongs to the field of oil and gas field wastewater treatment technology, and discloses a treatment system and method for oil and gas field fracturing flowback fluid. The system comprises a de-gelling and flocculation system, a microbubble ozone system, a reverse osmosis interception system, and a bio-enhanced degradation system connected in sequence. The de-gelling and flocculation system receives the raw water to be treated and, through the synergistic effect of chemical de-gelling and physical swirling fields, separates and removes oily substances and suspended solids from the raw water, forming de-gelling permeate. The microbubble ozone system is used to deeply oxidize the de-gelling permeate, forming oxidation permeate. The reverse osmosis interception system is used to desalinate and deeply purify the oxidation permeate, forming reverse osmosis permeate. The bio-enhanced degradation system is used to degrade biodegradable pollutants in the reverse osmosis permeate to obtain system effluent. This invention achieves the comprehensive goal of a compact process and stable effluent that meets standards for reuse or discharge through a closed-loop treatment path of progressive pollutant reduction and differentiated purification.

The utility model discloses a child scooter capable of reducing impact. The child scooter comprises a main frame, a left support in damping connection with the inner side of the left end of the main frame, a right support fixedly connected with the outer side of the right end of the main frame, hubs and tires, wherein the hubs and the tires are arranged in the left support and the right support. Tensioning structures used for hubs are arranged in the left support and the right support, a supporting anti-falling structure is arranged on the rear side of the left end of the right support, a locked direction adjusting handrail is installed on the inner side of the upper end of the left support in a nested mode, and rubber sleeves fixedly pasted to the direction adjusting handrail are arranged on the outer sides of the front end and the rear end of the direction adjusting handrail in a nested mode. A locked bearing rod is arranged on the inner side of the upper right end of the main frame in a nested mode, and a cushion is fixedly installed on the bearing rod. According to the child scooter capable of reducing the impact, the hub can be conveniently tensioned, the impact of the child scooter is reduced, damping can be conveniently conducted on the buttocks of a child in the using process, the comfort degree of the child is high, the child scooter can be conveniently supported and prevented from falling down, and collision damage and the occupied area are reduced.

The utility model provides a kind of integrated double independent air duct refrigeration system, including box, evaporator, condenser;The evaporator and condenser are respectively installed in the two sides of box, the box on the outside of evaporator is opened outdoor air inlet, outside air enters the air duct where evaporator by outdoor air inlet, air duct is equipped with air supply fan, air supply fan pushes air to flow through evaporator;Air is sent into refrigeration area after heat exchange with evaporator;Another side of box is equipped with corresponding outdoor air inlet close to condenser, indoor air outlet is equipped opposite outdoor air inlet, outdoor air enters the air duct where condenser by outdoor air inlet, air duct is configured and installs exhaust fan, exhaust fan will wind flow flow through condenser, condenser releases heat, exhaust fan will absorb heat after hot air discharge outdoor.This new double independent air duct design avoids hot and cold air mixing, evaporator and condenser can efficiently carry out heat exchange in relatively independent airflow environment.

The invention relates to an electronic-grade acetic ether production method and device based on reactive distillation-dividing wall tower distillation reinforcement. The device is composed of a reactive distillation system, an alcohol ester recovery tower system, an acetic ether concentration system and an acetic ether refining dividing wall tower system. An esterification reactor of the reactive distillation system adopts strong acid ion exchange resin as a catalyst; the contents of acetic acid and ethanol in the acetic ether reaction liquid are controlled by feeding fresh ethanol and acetic acid in a reactive distillation system; and crude ethyl acetate from which water and ethanol are removed by the ethyl acetate concentration tower is subjected to light component removal and heavy component removal by an ethyl acetate refining dividing wall tower to obtain an electronic-grade ethyl acetate product. The product purity is extremely high and stable, the whole set of process is designed for obtaining electronic-grade products, the final product purity stably reaches 99.99% or above, and the requirements of the high-end electronic chemical market are met. A dividing wall tower technology is adopted, light component removal and heavy component removal processes are integrated in a single tower, the number of devices and the occupied area are reduced, and energy is saved by 20%-30% compared with a traditional process.

This utility model provides a warning device for coal mining, relating to the technical field of auxiliary equipment for coal mines. It includes a base with a warning cylinder fixedly connected to its top. The top of the warning cylinder has a piercing hole that penetrates the bottom of the base. This utility model allows a positioning cone rod, penetrating the piercing hole, to move vertically up and down along the warning cylinder, piercing into the soil or coal seam for positioning. Simultaneously, a pressure block fixedly connected to the top of the positioning cone rod increases the striking area, facilitating downward displacement of the positioning cone rod by striking the pressure block with a tool, further penetrating the soil or coal seam. A prying groove at the bottom of the pressure block allows a pry bar to be inserted, expanding the distance between the pressure block and the top of the warning cylinder, thus detaching the positioning cone rod from the soil or coal seam. This solves the problems of inconvenient fixing and difficult disassembly of existing warning devices.

The invention discloses a rotary drilling all-in-one machine and a using method, and belongs to the technical field of rotary drilling, the all-in-one machine comprises a frame, a rotary platform, a slewing bearing and a drilling mechanism, and the drilling mechanism is installed on the frame through the slewing bearing and can be driven by the rotary platform to integrally and horizontally rotate; the drilling mechanism comprises a first outer slide way capable of swinging in a pitching mode, a first inner slide way arranged in the first outer slide way in a sliding mode, a second outer slide way rotationally arranged at the front end of the first inner slide way, a second inner slide way arranged in the second outer slide way in a sliding mode and a pile hammer installed on the second inner slide way. And a plurality of driving devices for driving horizontal rotation, pitching swing, two-stage stretching and retracting, tail end swing and the pile hammer to work are further arranged. Through multi-degree-of-freedom cooperative movement, large-range and multi-angle accurate positioning and flexible operation of the pile hammer in a three-dimensional space are achieved, and the multi-degree-of-freedom pile hammer has the advantages of being compact in structure, good in rigidity, convenient and fast to operate, high in capacity of adapting to complex working conditions, high in construction efficiency and the like.

The invention discloses an organic phosphorus wastewater degradation and phosphorus recovery experimental device and method, and particularly relates to the field of organic phosphorus wastewater treatment.The organic phosphorus wastewater degradation and phosphorus recovery experimental device comprises an electric reaction box, a recovery reaction unit capable of performing electrochemical reaction is arranged in the electric reaction box, and a water inlet pipe and a water outlet pipe are arranged between the two sides of the recovery reaction unit and the electric reaction box respectively; the recovery reaction unit comprises a water storage reaction box, a Fe3O4-coated N-GO negative plate and a titanium platinum positive plate are arranged in the water storage reaction box, the Fe3O4-coated N-GO negative plate is used for preparing Fe3O4-coated N-GO by adopting a one-step hydrothermal method, the Fe3O4-coated N-GO is loaded on an electrode, and the Fe3O4-coated N-GO negative plate has excellent electron transfer efficiency and catalytic activity. The organic phosphorus wastewater can be completely degraded within 40 minutes, and the PO4 < 3-> conversion rate is 35%; by constructing a continuous operation system for electrochemical degradation and recovery of the organophosphorus wastewater, efficient degradation and detoxification of the organophosphorus wastewater are realized, released phosphorus is recovered, and the method has practical significance of reducing treatment cost and increasing economic benefits.

The utility model relates to the technical field of nail making machines, and discloses a double-line high-speed nail making machine which comprises a lower supporting table, a nail making mechanism is fixedly arranged at the position, close to the rear side, of the upper end of the lower supporting table, and a feeding mechanism is fixedly arranged at the position, close to the front side, of the upper end of the lower supporting table. A side protection frame is fixedly arranged on the side, close to the feeding mechanism, of the lower supporting table, a heat dissipation window is arranged at an opening of the side, close to the feeding mechanism, of the side protection frame, a correction mechanism is fixedly arranged at the position, close to the feeding mechanism, of the outer portion of the side protection frame, and the nail making mechanism comprises a driving table. According to the automatic nail making machine, correction, feeding and nail making are integrated through layout optimization, the structure is compact, and operation is stable. A double-wire synchronous working mode is innovatively adopted, machining of two steel wires is completed at the same time, and the production efficiency is greatly improved. All the mechanisms are suitable for raw materials of various specifications, correction is accurate, the nail making quality is high, the production cost is effectively reduced, and the practicability and market competitiveness of equipment are improved.

This invention discloses a method for the comprehensive utilization of sulfide tailings, relating to the field of sulfide tailings treatment technology. This method uses lead-zinc tailings as raw material and innovatively employs a combined "two-stage acid leaching-gravity separation-flotation" process. First, two stages of acid leaching selectively leach calcite associated with barite in the tailings, reducing the influence of muddy calcite while activating pyrite. Subsequently, the acid leaching residue undergoes gravity separation to further separate undissolved calcite, quartz, and other silica-containing gangue minerals. The gravity concentrate is then subjected to flotation to achieve the separation of barite and pyrite, ultimately obtaining high-purity barite and pyrite products respectively. This invention features a reasonable process route and simple operation, effectively solving the separation problem of fine-grained, high-viscosity lead-zinc tailings, achieving full-component purification and utilization of lead-zinc tailings, significantly enhancing the economic value of tailings resources, and reducing the environmental pressure caused by tailings stockpiling, thus demonstrating good economic, environmental, and social benefits.

This utility model discloses a 10G xPON OLT STICK optical module, including a 10G xPON OLT MAC unit, an XFI interface unit, a digital diagnostic control unit, a soft-start unit, a power supply unit, a clock unit, a QSPI Nor flash unit, a 10G xPON OLT Driver unit, an APD boost / burst RSSI sample-and-hold unit, an EA negative pressure control unit, a TEC temperature control unit, and an XGSPON OLT BOSA unit. This utility model integrates MAC functionality, supports parallel 10G PON and active Ethernet services, supports multi-vendor interoperability, complies with ITU-T G.9807.1 standard specifications, and provides high-bandwidth access capabilities for 10G PON FTTH / FTTB. It supports small pluggable (SFP+) symmetrical 10Gb / s OLT modules for use with routers and switches.

The utility model discloses a kind of composite photovoltaic frame pultrusion production lines, including the glass fiber yarn frame, pultrusion mould, traction machine and cutting machine arranged in sequence;Felt frame and dehumidification integrated device are provided between the glass fiber yarn frame and pultrusion mould, felt frame and dehumidification integrated device include dehumidifier and felt frame, and the top and bottom of dehumidifier are respectively provided with felt frame;Production line further includes glass fiber yarn tension adjusting device, which is arranged close to pultrusion mould.Dehumidifier and felt frame are integrated design, compact structure, small floor area, and glass fiber yarn tension adjusting device is close to pultrusion mould, and the adjustment effect of yarn tension is more direct.

The utility model relates to direct drinking water equipment technical field discloses a kind of multifunctional integrated nanofiltration pipeline direct drinking water equipment, comprising: raw water tank;Pretreatment device, input and the output of raw water tank intercommunication;First ozone generator and micro-nano bubble generator, first ozone generator is connected with micro-nano bubble generator, and micro-nano bubble generator is communicated with pretreatment device;Precise filtration device, input and the output of pretreatment device intercommunication, and precise filtration device is also communicated with the output of micro-nano bubble generator;Second ozone generator and ozone mixer, the output of second ozone generator and ozone mixer intercommunication, and the input of ozone mixer and the output of precise filtration device intercommunication;Pure water tank, input and the output of ozone mixer intercommunication;End processing device.The utility model is high in integration, and good in sterilization effect, and stable in operating effect.

The utility model provides a stainless steel seamless tube straightening and cutting all-in-one machine, and relates to the technical field of stainless steel seamless tube machining. A groove is formed in the middle of the top of the base, a T-shaped bracket is slidably connected into the groove of the base, a threaded hole is formed in the front end of the bottom of the T-shaped bracket, a screw piece is rotatably connected to the front end of the interior of the groove of the base, and the screw piece is located in the threaded hole of the T-shaped bracket. An adjusting frame is fixedly connected to the middle of the rear end of the top of the base, and the middle of the adjusting frame is of a penetrating design. The straightening function and the cutting function are integrated, the number and the occupied area of equipment are reduced, the time and the labor cost for transferring pipes between different equipment are avoided, and the production efficiency is greatly improved. The problems that in existing stainless steel seamless pipe machining, straightening and cutting are usually completed through different devices respectively, the device cost and the occupied area are increased, and the production efficiency is low are solved.

The invention relates to the technical field of waste gas recovery and treatment, and discloses five-cycle DMF waste gas recovery equipment which comprises a spray tower body, five stages of spray chambers are arranged in the spray tower body, spray pipes are arranged in the spray chambers, five stages of collection boxes in one-to-one correspondence with the spray pipes are arranged below the spray tower body, and the collection boxes are connected with the spray tower body. The first-stage collecting box is provided with a collecting port, and the fifth-stage collecting box is communicated with a water inlet. According to the five-cycle DMF waste gas recovery equipment and the recovery process, a traditional interstage pumping valve control mode is abandoned, an interstage liquid distribution mechanism for controlling displacement of the flexible flow guide pipe based on rotation of a single driving source is created for the first time, and on the premise that a moving part does not make direct contact with a corrosive medium, the flow guide pipe can be flexibly distributed; accurate countercurrent replacement and dynamic mixing are carried out on the five-stage absorption liquid, and the problems that a pump valve is scaled and blocked and the concentration gradient is out of control due to the high-viscosity DMF waste liquid are thoroughly solved.

The present disclosure discloses an efficient AOA coupled anammox sewage treatment method and system based on BFM form, relating to the field of sewage treatment technology. The method includes: the sewage to be treated enters the anaerobic zone and then enters the carbon migration zone; the supernatant obtained in the carbon migration zone enters the aerobic pure film MBBR zone, the sludge obtained is discharged from the bottom of the carbon migration zone, and then transported to the selection zone through a pipeline connected to a sludge bypass pump. The effluent from the aerobic pure film MBBR zone enters the selection zone, anoxic IFAS zone, and secondary sedimentation zone in sequence. The method of the present disclosure achieves the operation status of pure film MBBR in the aerobic zone by setting the carbon migration zone, avoiding the problem of carbon loss of activated sludge in the aerobic zone. In addition, adding suspended carriers to collect anammox bacteria in the anoxic IFAS zone can reduce the dependence of denitrification on the carbon source of the raw water, and achieve high standard discharge of effluent nitrogen. The system HRT is reduced by more than 40% compared to the traditional activated sludge method, and the minimum HRT is less than 10 hours.

The application relates to an ionic liquid modified Cu-based bimetal electrode material and a preparation method and application thereof, and belongs to the technical field of material preparation. The method uses an in-situ reduction method to prepare the ionic liquid modified Cu-based bimetal electrode material, and the specific steps are as follows: copper salt and lanthanide chloride are dissolved in deionized water, and then ionic liquid is added after mixing; the mixture is stirred for 30 minutes under ice bath conditions. The above solution is slowly dropped into a sodium borohydride aqueous solution, the precipitate is extracted and filtered after the reaction is completed, the precipitate is washed with ethanol and water alternately for several times, and then the black solid is obtained after drying. The black solid is ultrasonically dispersed in a mixed solution of Nafion and isopropanol, then the dispersion liquid is uniformly coated on a gas diffusion electrode, and the electrode is pre-activated by a cyclic voltammetry method in a carbon dioxide-saturated electrolyte, so that the ionic liquid modified Cu-based bimetal electrode material is obtained. The electrode can be used as a high-efficiency electrode material to realize the conversion of carbon dioxide into ethylene under mild conditions. The Cu-based electrode material synthesis method has the characteristics of simple process and low cost, and is suitable for large-scale production and application.

The invention belongs to the technical field of gas separation, and particularly relates to a dynamic control purification system and method for multi-process source hydrogen, and the system comprises a mixing and pretreatment unit, a multi-tower PSA separation unit, a product and waste gas collection unit and a control and execution unit; the mixing and pretreatment unit comprises a gas mixer, a preheater and a deaerator which are connected in sequence; the multi-tower PSA separation unit is connected between the mixing and pretreatment unit and the product and waste gas collection unit through a pipeline, and the multi-tower PSA separation unit at least comprises four adsorption towers which are connected in parallel; the control and execution unit comprises a control module, a first online analyzer and a second online analyzer. Compared with the prior art, the problem that in the prior art, operation of a fixed time sequence program cannot effectively cope with impurity fluctuation existing in hydrogen of a mixed source is solved. According to the scheme, on the basis of dynamic regulation and control of the impurity concentration, tiny fluctuation of the product purity is maintained under large feeding concentration fluctuation, and qualified output of the product is guaranteed.

The invention relates to an integrated recovery process of aromatic hydrocarbons in hydrogen peroxide oxidation tail gas, which specifically comprises the following steps: preheating the oxidation tail gas to 95-115 DEG C, introducing the oxidation tail gas into an adiabatic expansion machine for adiabatic expansion, reducing the pressure to 0.1-0.15 MPa, suddenly reducing the temperature to 3-7 DEG C, realizing energy recovery and power generation by using the Joule-Thomson effect, and condensing and separating out most aromatic hydrocarbons; and the condensed tail gas enters the activated carbon adsorption tower for deep adsorption, so that the aromatic hydrocarbon content in the finally discharged tail gas is less than or equal to 70mg / m. Through cooperation of process units, efficient recovery of aromatic hydrocarbons (the total recovery rate is greater than or equal to 95%), self-sufficiency of energy and even negative energy consumption operation (the unit tail gas treatment energy consumption is-5-0 kW.h / 1000 m) are realized, the stability and economical efficiency of an adsorption system are remarkably improved, and the technical problems of high energy consumption, low recovery rate and poor adsorption stability of a traditional cooling and adsorption process are solved.

This invention discloses a method for separating high-purity sec-butyl acetate, characterized by the following steps: crude sec-butyl acetate is fed into a deacidification reactor for adsorption treatment with a deacidification adsorbent; the adsorbed crude sec-butyl acetate is then heated in a feed heat exchanger, and subsequently refluxed into an ester product tower for heating; the resulting refined sec-butyl acetate is extracted from the side stream of the ester product tower as a gas phase, then preheated in a feed preheater, and finally condensed and cooled using an ester product outlet condenser to obtain refined crude sec-butyl acetate. This invention provides a simple, low-energy-consumption, easy-to-operate, environmentally friendly, and resource-efficient method for refining sec-butyl acetate. It utilizes a single tower for separation and is particularly suitable for processing mixed crude esters containing light and heavy impurities, demonstrating significant industrial application value.

This invention discloses an integrated equipment for lifting, turning, and transporting irregularly shaped precast concrete components and its usage method. By integrating an intelligent lifting device, an intelligent locking and turning device, and a control system into a single integrated device with lifting, turning, and transport functions, this invention not only reduces the footprint and weight of the equipment but also improves the production and transportation efficiency of irregularly shaped precast concrete components, expands the storage space for irregularly shaped precast concrete components, and enhances the systematization and integration of the production system for irregularly shaped precast concrete components.

The utility model discloses a household garbage leachate microfiltration device which comprises a microfiltration membrane assembly, the microfiltration membrane assembly is used for filtering leachate, the microfiltration membrane assembly is further connected with a storage tank assembly, a backwashing assembly and an acid pickling assembly, the storage tank assembly is used for storing crystal substances, and the backwashing assembly is connected with the acid pickling assembly; by the adoption of the method, the functions of normal water production, crystallization accumulated sludge discharge, backwashing dredging, chemical cleaning and the like are integrated, the production function integration characteristic is achieved, operation is easy and convenient, efficient interception is conducted through the microfiltration membrane assembly, the production efficiency is improved, and the production cost is reduced. The problem that crystals cannot be efficiently removed independently by means of precipitation and other measures is avoided, the standing time and the occupied area are reduced, the microfiltration membrane assembly is convenient to discharge sludge, rapid sludge discharge and rapid production can be achieved according to the combined action of gravity and air pressure, meanwhile, cleaning and overhauling are convenient, hydrochloric acid liquid can be recycled, the use amount of cleaning acid liquid is reduced, and the cost is reduced. And the use cost is lower.