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Method and system for producing low-carbon olefin and light aromatic hydrocarbon through catalytic cracking
ActiveCN119432420Ahigh yieldEfficient continuous productionCatalytic crackingChemical/physical processesPtru catalystPetroleum oil
The invention relates to a method and a system for producing low-carbon olefin and light aromatic hydrocarbon through catalytic cracking. The method comprises the following steps: (1) carrying out contact reaction on raw oil and a catalytic cracking catalyst in a constant linear velocity fluidized bed reactor to obtain an oil agent mixture; (2) separating the oil agent mixture to obtain reaction oil gas and a spent catalyst; and (3) separating the reaction oil gas to obtain a low-carbon olefin component, a gasoline component and an oil slurry component. In a constant-linear-speed fluidized bed reactor, light petroleum hydrocarbons such as diesel oil are contacted with a catalytic cracking catalyst with a high silica-alumina ratio, and self-heat balance is maintained through regeneration flue gas circulation to produce low-carbon olefins, light aromatic hydrocarbons and the like. According to the method disclosed by the invention, heavy oil such as naphtha, wax oil and residual oil can be processed while light hydrocarbon such as diesel oil is processed, the conversion rate of the diesel oil is high, self-heating balance can be realized, the problem of excessive diesel oil production capacity of a refinery plant is solved, and the processing benefit of crude oil is also improved.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
Large jointed board welding method and large jointed board welding assembly line
ActiveCN119216857Ashorten the timeEfficient continuous productionWelding/cutting auxillary devicesAuxillary welding devicesProduction lineWeld seam
The invention discloses a large jointed board welding method and a large jointed board welding assembly line, which comprise the following steps: S1, jointed board spot welding: assembling pre-cut dispersed boards on a platform on an assembling station, and fixing through spot welding, S2, conveying the jointed board to be welded and aligning a welding seam, and S3, assembling the pre-cut dispersed boards on the platform. The splicing station, the welding station and the disassembling station are connected in series through a conveying device, S3, splicing plate welding is conducted, a portal frame can move front and back in the direction of an assembly line, a hanging bracket on the portal frame can drive a welding trolley track to move left and right, S4, a clamp is disassembled, the welded splicing plate is conveyed to the disassembling station through a chain conveying device, and the welding trolley track is driven to move left and right. The clamps clamped on the periphery of the jointed board are manually detached; the problems that due to the fact that current equipment lacks a flow production line, the machining time difference of all steps is large, and in batch overall machining, the overall time is the sum of the longest machining time of all the steps are solved.
Owner:GUANGDONG FUWEIDE WELDING
Continuous low-molecular removal device for organic silicone oil
This utility model discloses a continuous low-molecular-weight removal device for organosilicon oil, belonging to the field of organosilicon oil production technology. It includes a base plate, a feeding tank, a low-molecular-weight removal tank, and a collecting tank. A support is fixedly installed on the top of the base plate, and a pump body is installed on the top of the support. A discharge pipe connects the bottom of the feeding tank to the inlet end of the pump body. A conveying pipe connects the top of the low-molecular-weight removal tank to the outlet end of the pump body. A connecting pipe (first connection) connects to the top of the low-molecular-weight removal tank, and a connecting pipe (second connection) connects to the top of the collecting tank. A condenser pipe connects between the first and second connecting pipes. The low-molecular-weight removal tank contains multi-layered heating coils and baffles. A drive motor is fixedly installed on the top of the collecting tank. This design avoids insufficient processing in the low-molecular-weight removal tank due to excessively fast feeding, or reduced production efficiency due to excessively slow feeding. The continuous low-molecular-weight removal device for organosilicon oil achieves efficient and orderly continuous production, ensuring that the low-molecular-weight content in the produced organosilicon oil product meets the standards and improving product quality.
Owner:JIANGSU QUANLI CHEM CO LTD
A butane recovery cycle system
The utility model relates to the technical field of chemical industry, concretely relates to a kind of butane recycling circulating system;Through the combined use of condenser body, heat exchanger body, evaporator body and plate heat exchanger body, the efficient recovery and secondary recycling of butane waste liquid are realized, the recovery efficiency is significantly improved, at the same time, pry block type design simplifies system structure, it is convenient to install and disassemble, reduces operation difficulty and maintenance cost, it helps to realize continuous production, in addition, system controls process through switch valve, without repeatedly disassembling device, reduce energy consumption, and reduce waste liquid discharge, thereby reduce environmental pollution, the system not only improves butane recycling rate, also reduces production cost, realizes the dual goal of environmental protection and high efficiency, has wide application prospect in chemical industry.
Owner:STE EQUIP CO LTD
Rice flour distributing equipment
ActiveCN222646316Ueasy to receiveEfficient continuous productionSolid materialAgricultural engineeringProcess engineering
The utility model discloses rice flour distributing equipment. According to the rice noodle distributing equipment, the double swinging hoppers are used, the two rice noodle receiving mechanisms which are symmetrically arranged left and right are arranged, and each rice noodle receiving mechanism is provided with the driving assembly for driving the multiple upper receiving hoppers to move forwards and backwards together, so that rice noodles are received through the cooperative action of the upper receiving hoppers on the two sides, waiting is not needed in actual production, and the production efficiency is improved. Efficient and continuous production is realized, and the production efficiency is greatly improved.
Owner:GUANGDONG JIAWEI PACKAGING MASCH CO LTD
Multi-section fixed bed reactor and application thereof
ActiveCN122076328Awell mixedeasy to operateOrganic chemistryOrganic compound preparationFixed bedProcess engineering
The invention discloses a multi-section fixed bed reactor and application thereof. The fixed bed reactor comprises a plurality of sections of reaction units which are connected in series in the vertical direction, and static mixers arranged between the adjacent reaction units, the reaction unit comprises a reactor and a redistributor positioned above the reactor; a mixing component is arranged in the static mixer, and a heat preservation shell pass is arranged outside the mixing component; the inlet of the static mixer is communicated with the outlet of the reactor of the previous section of reaction unit and the raw material supplementing pipe, and the outlet of the static mixer is communicated with the redistributor of the next section of reaction unit. After each section of reactor discharges, materials are automatically supplemented, mixed and subjected to heat preservation, and then are distributed into the next section of reactor, so that the raw materials can be fully mixed and uniformly distributed. The equipment is simple to operate, and stable, continuous and efficient in production.
Owner:EAST CHINA UNIV OF SCI & TECH
A temperature control device and a gas hydrate reactor, a generation system and a method thereof
ActiveCN114522643Bstable temperatureIncrease spawn rateGaseous fuelsChemical/physical/physico-chemical processesTemperature controlEngineering
The present invention discloses a temperature control device and a reactor, a generation system and a method for gas hydrate thereof. The temperature control mechanism body is in a natural gas atmosphere, a nanofluid flows downward along a wall through an outlet and contacts with the natural gas to generate gas hydrates, a cooling structure for absorbing heat released when gas hydrates are generated is embedded in the temperature control mechanism body, the cooling structure timely absorbs the generated heat of the reaction, so that the temperature of the wall is constant, so as to ensure that gas hydrates can be stably and effectively generated on the wall, a scraper for peeling off the gas hydrates generated on the wall is provided on the wall, the gas hydrates generated and attached on the wall can be scraped away by the scraper in time, and the gas hydrates generated before will not affect the heat exchange between the nanofluid flowing out along the wall and the wall. The present invention strengthens the heat and mass transfer process of the gas-liquid two-phase, greatly improves the generation rate of the gas hydrate, and realizes the rapid and continuous preparation of the gas hydrate.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Efficient continuous production device of polysaccharide-iron compound
ActiveCN222446521Usave energyquick refillTransportation and packagingChemical industryGear driveGear wheel
The utility model relates to a high-efficiency continuous production device of a polyferose complex, which comprises a device box body, and further comprises a reaction cylinder body, a reaction kettle and a control system, the efficient production mechanism is arranged in the reaction cylinder body, the efficient production mechanism comprises a rotating rod, the rotating rod is arranged in the reaction cylinder body, and a plurality of stirring blades are installed on the outer portion of the end, located in the reaction cylinder body, of the rotating rod. The stirring blades can be driven to rotate in the reaction cylinder to stir and react raw materials, the multiple crushing blades can be driven to rotate through gear transmission to crush different raw materials at the same time, the crushing mechanism and the reaction mechanism are integrally arranged, multiple driving devices do not need to be arranged, and energy is saved.
Owner:NANJING DEKERUI PHARM CHEM CO LTD
Forming die for inner cover of refrigerator door
ActiveCN222625952Ureduce shockreduce wearShaping toolsMetal-working feeding devicesIceboxSlide plate
Owner:QINGDAO JINGYIDA MOULD CO LTD
A continuous preparation device for chlorine dioxide slow-release microspheres
This invention provides a continuous preparation device for chlorine dioxide slow-release microspheres, belonging to the field of mechanical device technology. It solves the problems of existing commercially available chlorine dioxide preparation devices, where dust easily comes into contact with the chlorite solution and polymer solution during continuous production, causing a decline in chlorine dioxide quality; and the inaccurate and unstable delivery of the feeding equipment to the designated position during the placement and collection of chlorine dioxide slow-release microspheres, resulting in product loss. This continuous preparation device for chlorine dioxide slow-release microspheres includes a body, a frame, and a base. The body, located at the top of the base, has a rotating unit for loading materials and a preparation unit on one side of the rotating unit. The preparation unit and the rotating unit are separated by a glass plate. Two symmetrical openings are located at the bottom of the glass plate, and a limiting seat is provided at the opening within the preparation unit. This invention has the advantages of dust prevention and continuous manufacturing.
Owner:SANMEN ZHENHE TECH CO LTD
Pipe drawing, welding and forming integrated manufacturing process for plastic bucket
PendingCN121756543AQuick welding jobRealize continuous productionBlow moldingManufacturing technology
The invention discloses a pipe drawing and welding forming integrated manufacturing process for a plastic bucket. The process comprises the following steps that S1, a pipe drawing blank is prepared, specifically, a continuous plastic pipe is extruded through pipe drawing equipment; s2, a fixed-length cutting process: conveying the continuous plastic pipe extruded by the pipe drawing equipment to cutting equipment; s3, workpiece positioning and clamping are conducted, specifically, the cut barrel body blank, a preset base and a barrel cover are transferred to welding equipment; s4, inner side support arrangement; and S5, heating welding forming: passing through a heating structure of welding equipment. The problems that a traditional blow molding process is low in efficiency, uneven in barrel body wall thickness, high in mold cost, difficult in model changing and high in material loss and energy consumption are solved; through the modes of extrusion molding, fixed-length cutting and hot melting welding, efficient continuous production is achieved, it is guaranteed that the wall thickness of the barrel body is uniform, the structural strength is stable, no complex mold is needed, production of products of various specifications can be rapidly adapted, the production cost is remarkably reduced, and the device is especially suitable for large-size containers.
Owner:SHANGHAI HENGJING IND CO LTD
A production method for efficiently preparing flame-retardant monofilaments
ActiveCN120967535Bprevent peelingimprove bindingFlame-proof filament manufactureArtificial filament heat treatmentPolymer scienceSpinning
This invention relates to the field of fiber preparation technology and discloses a highly efficient method for preparing flame-retardant monofilaments. The method includes: surface activation of a polyamide matrix using radio frequency plasma to directionally introduce carboxyl functional groups; surface grafting modification of a composite flame-retardant masterbatch using a silane coupling agent to construct an interfacial transition layer; controlling the moisture content of the raw materials using a microwave-airflow combined drying system; achieving a gradient distribution of the flame retardant using a dual-channel spinning assembly; synergistically dispersing the nano-reinforcing phase and the flame retardant to construct a three-dimensional network structure, and forming nascent monofilaments using the spinning assembly; controlling the crystal structure through two-stage stretching involving wetting pre-orientation and dry heat main orientation; and stabilizing the fiber structure using a segmented temperature-controlled thermal relaxation process to obtain a finished monofilament product with flame-retardant properties. This invention achieves efficient and continuous production of flame-retardant monofilaments through the synergistic effect of plasma activation, gradient spinning, and staged orientation.
Owner:GUANGDONG JIASHUO NYLON TECH CO LTD
Lithium battery electromagnetic induction heating device and temperature control circuit thereof
ActiveCN222300736UHigh crystallinityGuaranteed to be heatedCoil arrangementsSecondary cellsTemperature controlElectrical battery
The utility model relates to a lithium battery electromagnetic induction heating device and a temperature control circuit thereof. The device comprises an oven, a plurality of guide rails symmetrically and fixedly arranged on the inner wall of the oven in parallel, a battery heating tray assembly borne by the guide rails, vacuum equipment and a temperature control circuit, the heating tray assembly is composed of a battery heating tray, a square shell lithium battery placed on the battery heating tray, four interlayers which are arranged in the battery heating tray and are used for mounting excitation coils, and a heating plate; a magnet exciting coil in the battery heating tray is connected with an alternating current power supply to generate variable current, then a variable magnetic field is generated, a battery on the upper portion of the battery heating tray generates eddy current under the action of the magnetic field, and the lithium battery is heated through the Joule effect generated by the eddy current.
Owner:SHENZHEN RISUNG NEW ENERGY TECH CO LTD
Method for producing calcium carbonate, and calcium carbonate
PendingEP4269347A4Efficient continuous productionReduce environmental loadCalcium/strontium/barium carbonatesDispersed particle separation
To produce a calcium carbonate in a controlled form while carbon dioxide gas is efficiently used. A method for producing a calcium carbonate comprises a carbon dioxide gas absorption step of allowing an aqueous sodium hydroxide solution at a concentration of 5 to 21% to absorb carbon dioxide gas to give an aqueous sodium carbonate solution at a concentration of 4 to 24%; a hydration step of reacting calcium oxide with an aqueous sodium hydroxide solution at a concentration of 0 to less than 6% to give a lime milk that is a suspension of calcium hydroxide having a BET specific surface area of 5 to 40 m2 / g; and a carbonation step of adding the aqueous sodium carbonate solution to the lime milk and performing reaction.
Owner:SHIRAISHI KOGYO KAISHA LTD