65 results about "Solvent flow" patented technology

The invention discloses a quality inspection and early warning system for impregnated paper production, and relates to the field of quality inspection and early warning for impregnated paper production, and the method comprises the steps: directly measuring the real liquid pressure intensity of a paper immersion area through an impregnation parameter collection module, and generating a dynamic pressure intensity deviation in combination with the theoretical pressure intensity calculated by a dynamic pressure intensity calibration module; the valve opening reference value is matched based on the dynamic pressure deviation, the solvent flow is corrected in real time in combination with the liquid level change rate, and the precipitation risk is evaluated by analyzing the concentration reduction amplitude after solvent supplementation and the duration required by solution stabilization; when the risk reaches an activation condition, triggering an anti-precipitation instruction, according to the anti-precipitation instruction, linking a stirrer to stir in a production intermittent period, and injecting a solute to ensure that the concentration reaches the standard; and recording the water level adjusting time length, the concentration compensation time length and the instruction response time length, triggering graded alarm when time is out, and outputting an interrupt reset instruction to a corresponding adjusting module. And the quality control level in the impregnated paper production process is improved.

Described is a liquid chromatography system configuration. The configuration includes a binary solvent delivery system with a first pump for a strong solvent and a second pump for a weak solvent; an injector that is placed after the first pump and before a mixing tee that is used to combine the strong and weak solvent flow; a mixer placed downstream from the mixing tee and upstream from a column, is effective in radial mixing with small internal volume.

This utility model relates to a ceramic glazing spray gun, comprising a spray gun, a solvent tank, and a glaze tank. The glaze inlet end of the spray gun is connected to a three-way switching valve, and the solvent tank, glaze tank, and spray gun are connected via the three-way switching valve. After the spray gun finishes working, the three-way switching valve instantly switches to the solvent tank, and the solvent in the solvent tank flows into the spray gun, replacing the glaze and filling the fluid channel of the spray gun. Then, the solvent is sprayed out in a mist to flush the inside of the spray gun until clear solvent flows out, thus ensuring that the fine orifices of the nozzle are not blocked.

The utility model discloses a separation and dehydration system for recycled waste liquid. An evaporator is configured to evaporate and vaporize a flowing organic solvent; a gas inlet of the supergravity rectification bed is connected with a gas outlet of the evaporator through a pipeline, and a liquid outlet of the supergravity rectification bed is connected with a first liquid inlet of the evaporator through a pipeline; one end of the circulating pipeline D is connected with a gas outlet of the supergravity rectification bed, the other end of the circulating pipeline D is connected with a reflux inlet of the supergravity rectification bed, and a first condenser and an acid value instrument are arranged on the circulating pipeline; the membrane assembly is connected with a gas outlet of the supergravity rectification bed through a first pipeline, a fourth control valve is arranged on the first pipeline, and the membrane assembly is configured to dehydrate a solvent flowing through the membrane assembly to obtain a finished product organic solvent; and the feeding pipe group is configured to convey recovered waste liquid to the evaporator or the supergravity rectification bed. According to the scheme, the product precision and the processing efficiency can be improved, and the operation cost and system energy consumption are reduced.

The invention discloses a low-temperature efficient propolis extraction device, and relates to the technical field of propolis extraction. A strong shearing force is generated through high-speed rotation of the front curved knife face blades, propolis particles can be rapidly crushed, meanwhile, full mixing of a propolis raw material and an ethanol solvent is promoted, the extraction efficiency is improved, the ethanol solvent slowly moves downwards in the extraction tank through slow rotation of the spiral stirring blades, and the extraction efficiency is improved. The vortex generated by high-speed rotation of the blades with the front curved knife faces enables part of the ethanol solvent to flow out from the through grooves of the protective sleeve to form convection, so that the ethanol solvent can be uniformly distributed on each layer of the propolis raw material, and effective components in the propolis can be in more comprehensive contact with the ethanol solvent and are dissolved; the method ensures that the extracted propolis product has higher quality, is beneficial to full dissolution of active ingredients of the propolis, improves the extraction efficiency of the propolis, and is beneficial to extraction of more active ingredients of the propolis, so that the overall quality of the propolis product is improved.

The application provides a reaction device and method for continuously synthesizing trimethyl phosphite, and belongs to the technical field of trimethyl phosphite synthesis. The reaction device comprises a raw material tank group, a composite reaction kettle, a solvent tank, a pre-cooler, a water washing kettle, an alkali liquid buffer tank, a layered system and a rectification system. The raw material tank group comprises a methanol tank and a phosphorus trichloride tank. The raw material tank group and the solvent tank are connected with the composite reaction kettle through pipelines via the pre-cooler, and the composite reaction kettle is connected with the water washing kettle through a pipeline. The phosphorus trichloride drop-like feed is efficiently converted into a uniform liquid film by a centrifugal disc, and then the liquid film is converted into a fine jet flow by a spraying ring. The fine jet flow is instantaneously and highly intensively sheared with a strong vortex-shaped methanol / solvent flow formed through a tangential feeding pipe. The secondary intensified mixing mode replaces the macroscopic mixing limitation of a traditional stirred tank, realizes instant and uniform mixing of materials at a micro level, thereby inhibiting a side reaction and effectively improving a reaction rate.

The utility model relates to the technical field of glass distillation devices, in particular to an interface connecting assembly of a glass distillation device, which comprises a kettle cover and a reflux pipe, a connecting pipe for condensation and reflux is arranged at the upper end of the kettle cover, and a first ball convex opening connector is arranged at one end of the connecting pipe; compared with the prior art, the utility model has the advantages that the kettle cover adopts the spherical convex opening, the reflux elbow also adopts the spherical convex opening, and the polytetrafluoroethylene sealing gasket is additionally arranged between the two spherical convex openings, so that the reflux efficiency of the condensed liquid solvent is higher, and the problem that the reflux efficiency is low due to the fact that the kettle cover adopts the spherical concave opening in the traditional interface connection mode is solved. According to the present invention, the reflux elbow adopts the ball opening convex opening manner, such that the condensed liquid solvent flows into the kettle along the glass wall after passing through the spherical surface concave opening of the kettle cover during the reflux so as to cause the secondary reaction returning to the interior of the kettle body to have a certain hysteresis; therefore, the practicability of the interface connecting assembly can be greatly improved.

The invention relates to the technical field of asphalt testing devices, and discloses an asphalt four-component testing device which comprises a chromatographic column, a connecting cylinder, a pressurization mechanism and a pressure relief assembly, the pressurization mechanism comprises a pressurization cylinder, a piston and a first telescopic driving mechanism, the bottom of the connecting cylinder is communicated with the chromatographic column, and the bottom of the connecting cylinder is communicated with the pressure relief assembly. The top of the connecting cylinder is connected with the pressure cylinder, a first one-way valve only allowing gas to enter the connecting cylinder from the pressure cylinder is arranged between the connecting cylinder and the pressure cylinder, and the piston is driven by a first telescopic driving mechanism to slide along the inner wall of the pressure cylinder in the direction close to or away from the first one-way valve. A pressure relief pipe is arranged on the connecting cylinder, the pressure relief assembly can stretch and slide along the inner side wall of the pressure relief pipe along with the change of the air pressure in the connecting cylinder, and when the pressure relief assembly stretches to a preset position, the connecting cylinder communicates with the outside through the pressure relief pipe. The asphalt four-component test device is good in test pressurization controllability, and the solvent flow speed is convenient to adjust.

The invention relates to the technical field of traditional Chinese medicinal material processing, in particular to a traditional Chinese medicinal material crushing and alcohol extraction integrated device. The device comprises a base and an extraction tank fixed at the top of the base. Through the structural design of the extraction tank, the pretreatment mechanism and the grinding mechanism, the device realizes organic combination of crushing and alcohol extraction in the processing process of traditional Chinese medicinal materials, can ensure that the traditional Chinese medicinal materials can be fully crushed and the cell walls of the medicinal materials are effectively damaged, so that the effective components in the traditional Chinese medicinal materials are released to the greatest extent, and the extraction efficiency is improved; through the structural design of the uniform mixing mechanism, the device is matched with vibration generated by an ultrasonic transducer to enable a solvent to continuously flow, so that the solvent can continuously make contact with the traditional Chinese medicinal materials, cell walls can be broken under the cavitation action of ultrasonic waves, and the yield and quality of the traditional Chinese medicinal materials are improved; active ingredients in cells can be more easily released into the solvent, so that the extraction speed is accelerated.

This disclosure describes a mixer 50 for a liquid chromatography system. The mixer includes a flow distributor 52, a mixing disk 54, and a flow collector 56. The mixer includes an inlet face, an outlet face, and a plurality of channels, each channel having an inlet end at the inlet face and an outlet end at the outlet face. The channels have anisotropic flow direction between the inlet and outlet faces. The component solvent flow received at the flow distributor 52 is distributed on the inlet face of the mixing disk 54, and the flow collector 56 collects the distributed solvent composition flow after passing through the mixing disk 54. The mixing disk 54 can include a dispersive medium having a random porous structure. The residence time distribution of the mixer can depend on the structure of the channels between the inlet and outlet faces of the mixing disk.

The invention discloses a flame-retardant material, a preparation method thereof and a product. The flame-retardant material is prepared from the following components in parts by mass: 60 to 75 parts of polycarbonate; 6 to 10 parts of acrylonitrile-butadiene-styrene copolymer; 15 to 25 parts of talcum powder; 9-15 parts of a flame retardant; 0.5 to 1 part of an anti-dripping agent; 2-5 parts of a toughening agent; and 0.5 to 3 parts of an interface compatilizer; wherein the aspect ratio of the talcum powder is 15 to 25; the interfacial compatibilizer includes an organic compound having an epoxy group. According to the flame-retardant material disclosed by the invention, the high modulus is ensured through the talcum powder with the high aspect ratio, and meanwhile, flame retardance and solution flow are considered through coupling between the interface compatilizer and the talcum powder.

The embodiment of the invention discloses an electrolyte tank cleaning device. The device comprises a rack, a weighing platform, a solvent tank, a liquid phase pipeline, a spraying pipeline, a gas phase pipeline, a recovery pipeline, a liquid flow switch arranged on the liquid phase pipeline, and pressure sensors arranged on the recovery pipeline and the solvent tank respectively. According to the embodiment of the invention, the quick connection between each pipeline and the corresponding part is realized through the arrangement of the quick connectors, meanwhile, the connection tightness between the liquid-phase pipeline and the liquid-phase port is detected through the liquid flow switch, and a prompt is sent out through the prompt assembly; a worker can adjust the connection state of a liquid phase pipeline and a liquid phase opening in time, so that the inner wall of the liquid phase pipeline can be stably flushed by a solvent, and the cleaning requirement is met; the pressure sensor on the solvent tank is used for detecting the pressure of the solvent flowing into the spraying pipeline, and the reminding component is used for reminding to adjust the pressure of the solvent flowing out of the solvent tank in time, so that the working pressure of the spraying opening meets the requirement.

A solvent extraction process may be used to generate a miscella stream. The miscella stream may be processed by a separation device, such as a decanter, to form a light phase stream and a heavy phase stream. In some examples, a portion or all of the light phase recycle stream passes to a solvent purification device, such as a membrane, that separates the feed stream into a purified solvent stream and a concentrated light phase stream. The purified solvent stream may be solvent that is substantially or completely free of oil. The concentrated light phase stream contains a portion of the solvent from the feed stream together with nearly all or all of the oil in the feed stream. The purified solvent stream can then be used to supplement the fresh solvent feed to the extractor.

This invention relates to the field of petroleum component processing for high-aromatic oils, specifically a method and apparatus for enriching aromatic components. The former comprises the following steps: First, the feedstock oil, after primary adsorption refining, enters a multi-stage centrifugal extractor. In the multi-stage centrifugal extractor, the extraction solvent flows counter-currently with the feedstock oil for solvent extraction, yielding raffinate and extracted oil. Second, the extracted oil undergoes sedimentation separation to obtain upper and lower extracted oils. Third, the lower extracted oil undergoes sequential solvent separation and secondary adsorption refining to complete the enrichment and separation of high-aromatic oils from the feedstock oil, resulting in high-aromatic environmentally friendly rubber oil. This invention can simultaneously achieve both oil yield and aromatic selectivity, obtaining aromatic-rich components with an aromatic content greater than 75% and an aromatic extraction rate higher than 60%, ultimately yielding C... A It is a high-aromatic environmentally friendly rubber oil with 20% to 30% aromatics, which further improves the utilization rate of mono- and bi-cyclic aromatics in vacuum distillate oil, can achieve continuous operation, and has high refining efficiency and high recovery rate.

The application discloses a method for reducing the edge film thickness of high-viscosity photoresist, and belongs to the photoetching process technical field in the integrated circuit manufacturing industry. After photoresist spraying is performed on a wafer to be coated, the photoresist is spread to the whole wafer surface by glue throwing to form a stable film with a certain thickness; then the EBR nozzle is moved for two or more times with different distances to perform edge thinning, the flow of edge dissolving solvent is 10-20 ml / min, and the wafer rotating speed is 300-800 rpm; after coating and thinning are completed in the glue coating unit, the wafer is taken out by a robot, is baked, is sent into exposure, then is developed, and finally is transmitted back to a wafer box. The method optimizes the film uniformity, reduces wafer and equipment pollution, improves the process quality, and reduces the number of "invalid bands" in the subsequent photoetching process under the premise of guaranteeing the original standard requirements.

The invention is suitable for the technical field of camphor extraction and purification, and provides a camphor extracting solution fractionation and solvent recovery device, which comprises a device main body, and the device main body comprises a fractionating tower and a condenser; the buffer tank main body comprises a tank body and a cover body, an air inlet is formed in the upper end part of the cover body, an air outlet is formed in the lower end part of the tank body, the interception structure is mounted on the tank body and is arranged at a preset distance below the flow guide structure, the interception structure comprises a mounting table, a plurality of groups of interception plates and a fixing ring, and mounting grooves are formed in four side walls of the mounting table; the fixing ring is fixedly mounted at the lower end of the mounting table, each group of cutting plates is fixedly mounted in each mounting groove, and the two ends of each cutting plate are connected to the opposite inner walls of the mounting grooves; according to the invention, the gas-phase solvent flows through the plurality of groups of obliquely arranged intercepting plates, so that camphor fog drops originally flowing along with the gas-phase solvent are separated from the gas-phase solvent and are attached to the intercepting plates, and the purpose of improving the purity of the recovered gas-phase solvent is achieved.

The present disclosure relates to a container assembly for an extracorporeal blood treatment machine or for an extracorporeal blood treatment machine as a substitute for a plug-in container designed with a predetermined topology for providing an alkaline solution, the container assembly having: a container provided and configured to receive an alkaline drying substance, the invention relates to an extracorporeal blood processor comprising a container inlet and a container outlet, an adapter comprising an inlet connection section and an outlet connection section, the inlet connection section being provided and designed to be coupled and fluidically connected to an inlet of a plug-in container receptacle of the extracorporeal blood processor, the outlet connection section is provided and designed at least for coupling to an outlet of a plug-in container receptacle of an extracorporeal blood treatment machine, and a solvent flow path, which is provided and designed to pass through the container from the inlet connection section of the adapter via the container inlet and to the container outlet. In addition, the present disclosure relates to an extracorporeal blood treatment machine having a container assembly.

A substrate processing apparatus (1) is provided with: a water flow path that guides water toward a substrate (W); and a solvent flow path (33x) that guides an organic solvent, which is a liquid having a lower surface tension than water, to the substrate (W). The water flow path includes a concave-convex surface (72) having a concave portion (72u), at least a part of which is filled with air, and a convex portion (72 h), which is in contact with water in contact with the air in the concave portion (72u). The solvent flow path (33x) includes a mirror surface (71) in contact with the organic solvent.

The present invention belongs to the technical field of coating apparatuses, and specifically relates to a coating die head cleaning device. The cleaning device comprises a lower die head, wherein an upper die head is fitted on one side of the upper end of the lower die head; a solvent flow channel and a plurality of liquid inlets are provided inside the upper die head, and the solvent flow channel is in communication with each of the plurality of liquid inlets; a plurality of T-shaped blocks are fitted inside the solvent flow channel; and a liquid outlet is provided in one end of the upper die head. In the present invention, after a sealing cover is attached to one side of the upper die head, the sealing cover can be tightly attached to the upper die head by means of delivering compressed air to a vacuum generator, a cleaning solvent is delivered to the interior of the solvent flow channel by means of a diaphragm pump, and the interior of the solvent flow channel and the surfaces of the T-shaped blocks are cleaned by means of the cleaning solvent. In addition, the gravity of a filter element and impurities on the surface thereof is measured by means of tension sensors, and when the gravity of the filter element and the impurities on the surface thereof is greater than a set gravity threshold value, an operator can clean the filter element promptly.

This invention discloses a viscosity testing device for high-viscosity recycled bottle-grade PET, comprising a base plate, a back plate fixedly connected to the rear side of the top of the base plate, and a swing motor fixedly connected to the front side of the back plate. This invention uses a heating cylinder mechanism to add raw materials and solvents into the cylinder. A heating wire is activated to heat the raw materials. The swing motor drives the heating cylinder mechanism to swing, and the swing frequency and angle of the motor can be adjusted as needed. This agitates the raw materials and solvents inside the heating cylinder mechanism, ensuring uniform heating and improving the dissolution effect. After dissolution is complete, an electric telescopic rod can be activated to move the front end of the blocking plate downwards away from the outlet of the heating cylinder mechanism. The dissolved solvent flows into a recovery tank under gravity, facilitating viscosity testing using an Ubbelohde viscometer. This achieves the effect of ensuring the quality of the test solution and improving measurement stability and efficiency.

A container arrangement for an extracorporeal blood treatment machine serves as a replacement for an insert container designed with a predetermined topology for supplying an alkalizing solution. The container arrangement includes a container for holding an alkalizing dry substance. The container has a container intake, a container drain, and an adapter. The adapter has an inflow connection section for coupling and fluidic connection to an inflow of an insert container holder of the extracorporeal blood treatment machine and an outflow connection section for coupling to an outflow of the insert container holder of the extracorporeal blood treatment machine. A solvent flow path can be formed from the inflow connection section of the adapter, via the container intake, through the container, and to the container drain.

The exemplary embodiments control solvent pumps so that system flow is constant. One or more controllers may control the flow rate produced by the pumps over time. The one or more controllers control a first pump so that, as the first pump is refilling, a second pump maintains a sufficient flow rate to compensate for the lost flow due to the refilling event. In some exemplary embodiments, the one or more controllers control the timing of the refilling event for the first event such that the refilling event overlaps with the equilibrating of the chromatography column with solvent(s) from the second pump. Similarly, the one or more controllers control the timing of the refilling event for the second pump such that the refilling event overlaps with the equilibrating of the chromatography column.

A joint glue stirring device comprises a tank body (1), a scraping stirring shaft (2) is arranged in the tank body (1), a group of main stirring shafts (3) are annularly arrayed on the scraping stirring shaft (2), the main stirring shafts (3) rotate along with the scraping stirring shaft (2) and can rotate at the same time, a discharging pipe is arranged at the top of the tank body (1), and a dispersing barrel (8) in transmission with the scraping stirring shaft (2) is arranged on the discharging pipe. The stirring device has the advantages that the main stirring shaft rotates when rotating around the tank body along with the scraping stirring shaft, raw materials in the tank body can be quickly and uniformly stirred, meanwhile, the scraping plate can scrape off the materials adhered to the inner wall during stirring, the stirring quality is improved, and powder flows along with a solvent after being fed into the tank body, so that the stirring speed is increased. And the dispersing barrel can quickly disperse powder floating above the solvent, so that the mixing efficiency is improved.

A dynamic adjusting system of American ginseng extraction equipment particularly relates to the technical field of American ginseng extraction and comprises a control device, an American ginseng extraction tank device and a solvent tank device, and a data acquisition module, a data dynamic adjusting module, a control execution module and a storage module are connected in the control device. The data acquisition module is used for acquiring temperature characteristics in the American ginseng extraction tank device, flow velocity characteristics and total solvent quantity of a solvent conveyed to the American ginseng extraction tank device by the solvent tank device and initial time characteristics set by the control execution module for the American ginseng extraction tank device in real time; the control execution module is used for receiving and executing the temperature state information, the solvent flow speed execution characteristics, the time execution characteristics and the adjustment result obtained from the data dynamic adjustment module, and the dynamic adjustment is achieved by monitoring the temperature, the solvent flow speed and the extraction time in real time, so that the extraction process can be always in the optimal state; therefore, the extraction efficiency and quality of the effective components of American ginseng are improved.

The utility model discloses a glue gun cleaning device of a forming machine. The glue gun cleaning device comprises a glue gun fixed on the forming machine, a feeding assembly arranged on the upstream of the glue gun, and a recycling assembly arranged on the downstream of the glue gun, the feeding assembly and the recycling assembly are connected with different joints on the glue gun, a solvent bin is arranged in the feeding assembly, a cleaning solvent used for cleaning the glue gun is stored in the solvent bin, and the recycling assembly is used for storing the cleaning solvent flowing through the glue gun. The glue gun does not need to be disassembled in the cleaning process, inaccurate positioning of the glue gun caused by frequent disassembly and assembly of the glue gun is avoided, the maintenance time of the glue gun is shortened by reducing the disassembly steps of the glue gun, and therefore the equipment efficiency is improved.

The invention relates to the field of anti-corrosion equipment design, in particular to a material anti-corrosion treatment device which comprises a charging barrel, a telescopic assembly and a liquid spraying assembly. Specifically, a bottom plate is arranged in the charging barrel, a top plate which linearly reciprocates along the upper end face of the bottom plate is arranged on the upper end face of the bottom plate, push plates used for sealing are arranged at the two ends of the top plate, feeding grooves are formed in the surfaces of the push plates, a plurality of through filter holes are formed in the surfaces of the bottom plate and the push plates, and the telescopic assemblies are arranged at the two ends of the charging barrel. The telescopic end of the telescopic assembly is fixed to the end face of the push plate, and the liquid spraying assembly is used for spraying an anti-corrosion solvent to the surfaces of the top plate and the bottom plate, and the anti-corrosion solvent flows to the material surface after being filtered through the filter holes. Through cooperation between the top plate capable of reciprocating and the bottom plate, a device capable of automatically scraping materials on the bottom plate is formed, so that the materials can be automatically treated in a reciprocating manner, comprehensive coverage of an anti-corrosion solvent is guaranteed, and the overall machining efficiency is further improved through the reciprocating structural design.

The utility model discloses a dehydration molecular sieve system which comprises a storage tank, a molecular sieve is filled in the storage tank, the opposite inner walls of the storage tank are connected with a separation unit, one side of the bottom of the storage tank is connected with a water-containing solvent storage tank through a feeding unit, and one side wall of the storage tank is connected with a gas phase feeding unit. The side wall, opposite to the gas phase feeding unit, of the storage tank is connected with a dry solvent storage tank through a discharging unit, the side wall, opposite to the gas phase feeding unit, of the storage tank is further connected with a gas phase discharging unit, the top of the storage tank is connected with a nitrogen feeding unit, the bottom of the storage tank is further connected with a pollution discharge unit, and the pollution discharge unit is connected with the dry solvent storage tank. The horizontal storage tank is adopted, no invalid space exists at the bottom, the dehydration and adsorption time is shortened, the storage tank is completely filled with molecular sieves, the structure is compact, the treatment efficiency is high, a solvent on the left side of the separation unit flows back to the to-be-treated water-containing solvent storage tank, a solvent on the right side of the separation unit flows back to the dry solvent storage tank, and the solvent flowing back to the water-containing solvent storage tank is reduced; and the dehydration efficiency is improved.

The application designs a method for flash spinning above the cloud point pressure, comprising the following steps: step S1, polymer melt and organic solvent are respectively extruded into polymer melt flow channel and solvent flow channel; step S2, the polymer melt and organic solvent are in contact and diffuse with each other in a laminar flow mode in a diffusion function area; step S3, the polymer melt and organic solvent flowing out of the diffusion function area are further dispersed and mixed in a non-shearing and gentle mode in a mixing function area, forming a two-phase dispersion with polymer-rich phase and solvent-rich phase inside; step S4, the two-phase dispersion is extruded through a spinneret above the cloud point pressure of the homogeneous solution before the two-phase dispersion reaches diffusion equilibrium, and flash spinning is completed. The heterogeneous solution system prepared in the application avoids strong mechanical shearing and stirring process, and the flash spinning is completed by extruding the solution from the spinneret at high pressure, forming a uniform, small-diameter, high-strength and easily controlled production speed flash non-woven fabric web.

The utility model relates to an efficient polyester spinning metering pump, which relates to the technical field of metering pumps, and comprises a shell assembly, the shell assembly comprises a case, a tubular shell and a flow shell, the case, the tubular shell and the flow shell are fixedly connected in sequence, and the top and the bottom of the flow shell are respectively provided with a liquid outlet and a liquid inlet; the liquid conveying assembly is used for controlling liquid flowing and comprises a plunger, a diaphragm, a limiting spring and a control rod, the plunger is arranged in the tubular shell and the machine box, the limiting spring is installed between the plunger and the inner wall of the tubular shell, the diaphragm is installed on one side of the inner wall of the flowing shell, and the control rod is installed between the plunger and the diaphragm; the driving assembly is used for driving the infusion assembly, and the driving assembly comprises a motor and an adjustable rotating disc. According to the utility model, the flow amount of the solvent at each time can be adjusted according to the demanded quantity of the solvent, so that the flow amount can be flexibly adjusted according to the demanded quantity, the flow amount does not need to be metered for several times under the condition of determining the flow amount, and the efficiency can be improved.

A system including a slurry reactor configured to receive an acetylene-rich gas stream and a hydrogen stream as one stream or as separate streams flowing upwards and a slurry catalyst comprising catalyst particles and a liquid solvent flowing downwards, wherein the liquid solvent extracts acetylene in the acetylene-rich gas stream and hydrogen in the hydrogen stream and at least a portion of the acetylene is converted to ethylene in the presence of the slurry catalyst and the hydrogen under hydrogenation reaction conditions to generate an acetylene-lean gas effluent and a spent slurry catalyst including spent catalyst particles and the liquid solvent.