44 results about "Solvent flow" patented technology

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 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.

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.

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.

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 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 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 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.

The invention discloses a method and a system for separating and removing benzene from a benzene selective hydrogenation reaction product. The method comprises the following steps: introducing benzene selective hydrogenation reaction slurry and a lean solvent containing sulfolane and water into an extractive distillation tower for benzene extraction separation to obtain an alkane olefin product which flows out from the top of the extractive distillation tower; the benzene-containing lean solvent flows out of the tower kettle of the extractive distillation tower and then is introduced into a solvent recovery tower for distillation separation of benzene and sulfolane, benzene flows out of the tower top of the solvent recovery tower, sulfolane flows out of the tower kettle of the solvent recovery tower and then is divided into two parts, one part is directly recycled for benzene extraction separation, and the other part is directly recycled for sulfolane separation. Introducing the other part of sulfolane into a solvent regeneration tank for distillation and purification, and returning the purified sulfolane to the tower kettle of the solvent recovery tower; the alkane olefin product is directly used for a technology for preparing cyclohexanone through cyclohexene esterification and hydrogenation. The alkane olefin product obtained by the method is high in purity, low in benzene content, simple in process, low in cost, green and environment-friendly, and the provided adaptive system meets the continuous production requirement and is suitable for industrial application.

The utility model provides a gas-liquid mixing device and flue gas treatment equipment. The gas-liquid mixing device comprises: a liquid separation plate provided with a plurality of through holes; the packing piece is arranged on the bottom side of the liquid separation plate, a plurality of liquid inlets are formed in the top face of the packing piece, a plurality of liquid outlets are formed in the bottom face of the packing piece, the liquid inlets are used for allowing liquid to enter the packing piece, the liquid outlets are used for allowing the liquid to flow out of the packing piece, a plurality of flow guide protrusions are arranged on the top face of the packing piece, and the top ends of the flow guide protrusions make contact with the bottom face of the liquid separation plate. The liquid separation plate can disperse a reaction solvent and flow downwards from the through holes, and a layer of water film can be formed on the bottom surface of the liquid separation plate along with flowing of the reaction solvent from the through holes. Due to the fact that the flow guide protrusions make contact with the bottom face of the liquid separation plate, after the formed water film makes contact with the flow guide protrusions, the formed water film can flow around the flow guide protrusions under the guidance of the surfaces of the flow guide protrusions, the reaction solvent can evenly enter the packing piece from all the liquid inlets, and the gas-liquid reaction efficiency can be improved.

The utility model discloses a condenser for polyurethane resin production, which comprises a reaction kettle body, the top of the reaction kettle body is connected with an air outlet pipe, one end of the air outlet pipe far away from the reaction kettle body is connected with a condenser, and the liquid outlet end of the condenser is connected with a liquid discharge pipe. A liquid return mechanism is arranged at the end, away from the condenser, of the liquid discharge pipe. According to the condenser for polyurethane resin production, high-temperature gas is condensed through the condenser, condensed water and solvent flow into the tank body through the arranged liquid return mechanism, the solvent floats on the water due to different specific gravities of the water and the solvent, and the floating ball can sink into the solvent and float on the water, so that the water and the solvent are separated from each other. A solvent flows into the reaction kettle body from the overflow pipe, water is left in the tank body, and after the water in the tank body is increased, the spring is compressed, and the water in the tank body is discharged from the drainage pipe, so that the concentration of the recovered solvent is improved.

A liquid delivery pump delivers a liquid with high flow rate accuracy in consideration of solvent expansion, pressure dependent leakage of the solvent, and flow rate dependent leakage of the solvent. A liquid delivery pump includes first and second plunger pumps connected together, having respective first and second plungers. A pressure sensor measures a liquid delivery pressure (P2) from the second plunger pump, and a controller controls the driving of the first and second plungers. The controller obtains a moving speed (v1) of the first plunger and a moving speed (v2) of the second plunger using a parameter (C1, C0) depending on the liquid delivery pressures (P1, P2), the liquid delivery pressure, and a target flow rate of the liquid. The parameter (C1, C0) is a parameter of an expression representing a relationship between the liquid delivery pressure (P2) and a flow rate (Q0) of the liquid.

The utility model discloses a new energy automobile waste solvent collector which comprises a collecting barrel, the top of the collecting barrel is connected with an opening and closing plate in a hinged mode, the inner bottom of the collecting barrel is in threaded connection with a filtering assembly for filtering waste solvent, and the bottom of the collecting barrel is in threaded connection with a pipeline for guiding the waste solvent. The top of the pipeline abuts against the bottom of the filtering assembly. According to the utility model, the collector is detachably arranged, so that the collector can be quickly disassembled and dredged when being blocked, and the extension pipeline is arranged at the bottom of the collecting barrel, so that impurities are convenient to sink and collect, and the terminal recovery of a waste solvent is facilitated, thereby reducing the treatment load of the venturi on the waste paint and the waste solvent; the situation that the treatment cost of the agent is increased due to long-time waste paint and waste solvent treatment is prevented, the emission amount of VOC is reduced, and the environment-friendly requirement is met.

A system including an acetylene absorption and hydrogenation reactor configured to receive an acetylene-rich gas stream and a hydrogen stream flowing upwards or downwards to a reaction zone and a cooled liquid solvent flowing downwards to the reaction zone, wherein the cooled recycled liquid solvent stream 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 a hydrogenation catalyst and hydrogen under hydrogenation reaction conditions to produce an acetylene-lean gas effluent and a heated liquid solvent effluent, and a first heat exchanger for receiving the heated liquid solvent effluent, the first heat exchanger being configured to remove heat from the heated liquid solvent effluent and produce the cooled recycled liquid solvent stream as part of a continuous solvent recycle loop.

The embodiment of the invention belongs to the washing machine technology, and provides a washing machine which comprises a box body, an outer barrel, a roller, a first water inlet system, a detergent supply system and a detergent putting mechanism, the detergent putting mechanism comprises a first channel, a second channel and a bubbling piece, and a water inlet of the first channel is communicated with the water supply end of the first water inlet system; a mixing part is formed in the first channel and communicated with the detergent supply system, and a water inlet of the second channel is communicated with the water supply end of the first water inlet system. After clean water of the first water inlet system enters the detergent feeding mechanism, one path of clean water flows through the first channel and is preliminarily mixed with the detergent in the mixing part, the other path of clean water flows through the second channel, and a mixed solvent flowing out of the first channel and the clean water flowing out of the second channel are secondarily mixed; the water flow mixed with the detergent for the first time is reduced, so that the detergent cannot be quickly flushed out of the detergent feeding mechanism, and the liquid detergent and clear water can be more uniformly mixed.

The present application provides a mobile phase infusion system and a mobile phase infusion method. The mobile phase infusion system includes: a solvent container; an additional solvent container; an infusion pump; a flow path structure having a connection flow path and a suction flow path, the connection flow path having one end and the other end, the one end being inserted into the solvent container from above, the other end being inserted into the additional solvent container from above, the suction flow path being fluidly connected to the connection flow path at a position between the one end and the other end of the connection flow path; and a flow path opening and closing mechanism for opening and closing the suction flow path of the flow path structure. When the one end and the other end of the connection flow path of the flow path structure are immersed in the solvent, and the connection flow path is in a state of being filled with the solvent, the solvent flows in the connection flow path due to the relationship between the liquid level of the solvent in the solvent container and the liquid level of the solvent in the additional solvent container, thereby supplying the solvent from the additional solvent container to the solvent container in response to the decrease of the solvent in the solvent container.

A system including an acetylene absorption and hydrogenation reactor configured to receive an acetylene-rich gas stream and a hydrogen stream flowing upwards or downwards to a reaction zone and a cooled liquid solvent flowing downwards to the reaction zone, wherein the cooled recycled liquid solvent stream 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 a hydrogenation catalyst and hydrogen under hydrogenation reaction conditions to produce an acetylene-lean gas effluent and a heated liquid solvent effluent, and a first heat exchanger for receiving the heated liquid solvent effluent, the first heat exchanger being configured to remove heat from the heated liquid solvent effluent and produce the cooled recycled liquid solvent stream as part of a continuous solvent recycle loop.

The invention discloses a control method of a redissolving and defoaming dispensing robot and the redissolving and defoaming dispensing robot, and relates to the technical field of medical machineries. The control method of the redissolving and defoaming dispensing robot comprises the steps that a fixing structure is controlled to fix a freeze-drying bottle; controlling a driving part to drive a medicine dispensing needle head to move towards a bottle opening of the freeze-drying bottle, and enabling at least part of the medicine dispensing needle head to extend into the freeze-drying bottle, so that a solvent flows into the freeze-drying bottle from a needle opening of the medicine dispensing needle head; an electric shock structure is controlled to be powered on, so that electric arcs are emitted through the dispensing needle head; the electric shock structure is controlled to be powered off, and the driving part is controlled to drive the dispensing needle to move in the direction away from the freeze-drying bottle. By means of the arrangement, bubbles generated when powder in the freeze-drying bottle is redissolved can be eliminated in time, so that medicine waste is reduced, and the medicine dispensing speed is increased.

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.