19 results about "Sulfide production" patented technology

The invention relates to the technical field of heat exchangers, and provides a sulfide production heat exchanger which comprises a shell, end covers are fixedly connected to the two ends of the shell, an outer liquid outlet pipe is fixedly connected to the upper portion of the left end cover, an outer liquid inlet pipe is fixedly connected to the lower portion of the right end cover, and a driving motor is fixedly installed on the right side of the right end cover. An output shaft of the driving motor is fixedly connected with a transmission shaft, the middle of the transmission shaft is in threaded connection with a threaded sleeve, the curved surface of the threaded sleeve is fixedly connected with a moving plate, a plurality of scraping rings are fixedly installed in the moving plate, a stirring mechanism is installed on the right side of the threaded sleeve, and a scraping plate is fixedly installed at the left end of the transmission shaft. According to the technical scheme, the problems that the overall heat transfer performance of the heat exchanger becomes poor, the stability and efficiency of the technological process are affected and it is difficult to ensure that heat can be evenly transferred from a hot medium to a cold medium due to the fact that existing dissolved substances are separated out and deposited on the pipeline wall and thermal resistance is increased along with the increase of the thickness of a scaling layer are solved.

The utility model relates to the technical field of polyphenylene sulfide production, in particular to drying equipment for polyphenylene sulfide production, which comprises a drying tank, an air inlet, an air outlet, a vibrating mechanism, a heat conduction layer, a heating mechanism, a heat insulation plate, a feed pipe and a discharge port. The bottom of the conical hopper is communicated with a long discharging pipe, two sliding rods are arranged above the conical hopper, an abutting block is arranged above the sliding rods, the sliding rods can push the conical hopper downwards through the arrangement of the cam and the abutting block, after the cam is separated from the abutting block, the conical hopper bounces upwards instantly under the action of the spring, and therefore raw materials are vibrated, and the raw materials are conveyed into the conical hopper. The generated vibration can promote relative displacement and friction between raw material particles, meanwhile, gaps between the raw material particles can be fully utilized through vibration, the contact area of hot air and raw materials is increased, and the drying efficiency is further improved.

The application discloses a kind of continuous preparation sulfide vertical vibration high-temperature furnace, it is related to sulfide production preparation field, the vertical vibration high-temperature furnace is configured to realize the continuous sulfuration equipment of material based on vibration and gravity, the continuous sulfuration equipment includes feeding system, sulfuration system, discharge system, transfer bin, control system, pressure balance system, feeding system, sulfuration system, discharge system, transfer bin are sequentially communicated and form the closed loop continuous process of feeding, sulfuration, discharge, temporary storage;This kind of vertical vibration high-temperature furnace, by feeding system, sulfuration system, discharge system, pressure balance system and the material transmission mechanism of vibration and gravity cooperation constitutes a set continuous feeding, efficient sulfuration, safe discharge, pressure regulation in one's body continuous preparation sulfide vertical vibration high-temperature furnace, it can realize the efficient, continuous, safe preparation of sulfide, meet the demand of modern industry to sulfide material large-scale, high quality, continuous production.

The invention relates to the technical field of polyphenylene sulfide production, in particular to a device and a method for separating NMP (N-Methyl Pyrrolidone) and trichloromethane in a rectification process. The device comprises a first rectifying tower, a second rectifying tower, a third rectifying tower, a fourth rectifying tower, an NMP collecting tank, a first condensing device, a second condensing device, a third condensing device, a fourth condensing device, a first heating device, a second heating device, a third heating device and a fourth heating device. According to the method, trichloromethane is selected as an extraction agent, an NMP-containing oil phase obtained through extraction is subjected to four-stage rectification, and meanwhile, the temperature of a tower kettle of a rectification tower is controlled, so that decomposition of trichloromethane is inhibited, the pH value environment in the tower is controlled, equipment corrosion and generation of other organic impurities due to NMP hydrolysis are prevented, separation of NMP and trichloromethane is achieved through a low-temperature azeotropic control means, and the yield of NMP is increased. And carrying out system recycling on the separated NMP and trichloromethane.

The invention relates to the technical field of polyphenylene sulfide production, in particular to a method for producing low-chlorine, high-crystallinity and high-melt-index polyphenylene sulfide, which comprises the following steps: dissolving an organic matter containing a carboxyl group in a polar aprotic solvent for later use; the method comprises the following steps: adding sodium sulfide pentahydrate, sodium hydroxide, lithium chloride and N-methyl pyrrolidone into a reaction container, uniformly stirring, and heating and dehydrating under the assistance of nitrogen; adding p-dichlorobenzene into the reaction container; carrying out primary heating reaction on the raw materials in the reaction container, then adding the standby organic matter containing the carboxyl group into the reaction container, maintaining the temperature, reacting for a period of time, and then carrying out secondary heating reaction; according to the method for producing the low-chlorine high-crystallization high-melt-index polyphenylene sulfide, carboxyl groups are introduced into the polymerization reaction, and the adding sequence and the heating mode of the raw materials are regulated and controlled, so that the reaction can be fully carried out, chlorine residues in the product are reduced, side reactions are inhibited, and the crystallization temperature of the polyphenylene sulfide is increased.

The present invention provides a method for treating nickel oxide ore, the method capable of efficiently recovering nickel that is intended to be recovered.　The present invention also provides a sulfide production method for producing sulfide from nickel oxide ore, the method comprising: a mixing treatment step for mixing nickel oxide ore with a reducing agent to obtain a mixture; a reducing step for charging the mixture into a reduction furnace and subjecting the mixture to a reduction process to obtain a reduced product containing a metal, which is ferro-nickel metal, and a slag, which is an oxide; a separation step for separating the metal and the slag from the reduced product; and a sulfurization step for adding a sulfurizing agent to the metal obtained in the separation step to obtain a sulfide containing nickel.

A method for manufacturing alkali-metal sulfide with the chemical formula M2S where M is at least one alkali metal, the method comprising: generating a vapor of an alkali metal; generating a vapor of elemental sulfur; bringing the generated alkali metal vapor into contact with the generated elemental sulfur vapor; and initiating a reaction between the alkali metal vapor and the elemental sulfur vapor to produce the alkali-metal sulfide.

The utility model relates to the technical field of polyphenylene sulfide preparation, in particular to a waste salt recovery device in polyphenylene sulfide preparation, which comprises a filter box and a sealed filter component, the sealed filter component comprises a curved pipe, a sealing ring and a funnel, the curved pipe is detachably connected with the filter box and positioned above the filter box, the sealing ring is detachably connected with the filter box, and the funnel is positioned above the curved pipe. The sealing ring is arranged on the outer surface of the curved pipe, the funnel is fixedly connected with the curved pipe and is located at one end, far away from the filter box, of the curved pipe, and the sealed filter assembly is additionally arranged, so that the problem that high-concentration working waste brine often contains harmful substances is actively and effectively solved; the problems that in the prior art, irreversible harm is caused to the human body due to the fact that air is filtered, harmful gas is volatilized to the air in the filtering process, and therefore certain harm is caused to workers, and great potential safety hazards exist are solved.

The invention discloses a solvent rectification recovery system for polyphenylene sulfide production. The solvent rectification recovery system comprises an evaporation tower, a rectification tower, an evaporation tower feed preheater, an evaporation tower bottom reboiler, a rectification tower top condenser, a rectification tower bottom reboiler, a third-stage compressor, a second-stage compressor, a first-stage spraying tank, a second-stage spraying tank and a gas-liquid separation tank. According to the rectification method disclosed by the invention, heat in the system is fully used through heat integration and heat pump technologies in the system, and a large amount of additional steam consumption is saved and the operation cost is saved by consuming a small amount of electric energy.

The application discloses a method for enhancing sulfide production by sulfur disproportionation in wastewater, comprising the following steps: introducing sulfur disproportionation bacteria, adding elemental sulfur as a disproportionation substrate, and adding glutamic acid compounds as a sulfur production promoter in a wastewater pool; under the condition of alkalinity of 0.25-5 g / L CaCO3 and anaerobic condition, the disproportionation substrate reacts to generate sulfide under the action of the sulfur disproportionation bacteria; wherein the concentration of glutamic acid in the wastewater pool is 0.2-5 mmol / L; and the salinity of the wastewater in the wastewater pool is 0 g / L-50 g / L in terms of NaCl equivalent. The application greatly improves the sulfur production efficiency of wastewater with salinity of 0 g / L-50 g / L, and the method can realize efficient treatment of industrial wastewater with high salinity and carbon deficiency.

The utility model discloses a sulfur feeding device, which relates to the technical field of sulfide production and is characterized in that an inlet of a sulfur melting tank is communicated with a solid sulfur bin through a pipeline, and an outlet of the sulfur melting tank is communicated to a reactor through a pipeline; and a jacket inlet and a jacket outlet of the sulfur melting tank are respectively communicated with a steam inlet pipeline and a condensate water outlet pipeline. The temperature in the sulfur melting tank is increased to 140-150 DEG C through steam heating, the temperature is maintained, then solid sulfur powder enters the sulfur melting tank from the solid sulfur bin, liquid sulfur is formed after melting, and finally the liquid sulfur enters the reactor to react with hydrogen to synthesize hydrogen sulfide. Liquid sulfur in the sulfur melting tank can continuously enter the reactor, so that continuous reaction is realized, the production efficiency is improved, the temperature in the reactor is low, and the liquid sulfur in the sulfur melting tank can play a liquid sealing role, so that hydrogen cannot flow back into the sulfur melting tank, and the safety is higher.

The utility model relates to the technical field of polyphenylene sulfide production, and particularly discloses a polyphenylene sulfide polymerization reaction kettle which comprises a kettle body, a discharging pipe, a rotating roller, a mounting rod, a sleeve, a fixed seat, a plurality of supporting rods, a bearing, a sealing assembly, two groups of stirring assemblies and a discharging assembly, one end of each supporting rod is fixedly connected with the fixed seat, the other end of each supporting rod is inserted into the corresponding groove, the sleeve is connected with the fixed seat through a bearing, the mounting rod is fixedly connected with the sleeve, the two stirring assemblies are arranged on the outer side of the mounting rod, and the sealing assembly is arranged on the upper surface of the kettle body. One end of the rotating roller is fixedly connected with the mounting rod, the other end of the rotating roller penetrates through the sealing assembly, and the discharging assembly is arranged at the lower end of the sleeve, so that the stirrer in the kettle body can be conveniently disassembled, and maintenance and replacement are facilitated.

The utility model relates to the technical field of polyphenylene sulfide production, and discloses a polyphenylene sulfide granulating device which comprises an extruder, a cooling tank is arranged on the front side of the extruder, a granulator is arranged on the front side of the cooling tank, a cooling assembly is arranged on the front side of the granulator, and the cooling assembly comprises a cooling bin fixed on the front side of the granulator. The top face of the cooling bin communicates with and is fixedly provided with a feeding bin, and an inclined screen is arranged in the feeding bin. According to the waste gas treatment device, cut particles are screened and filtered through the inclined screen, the air heater inputs airflow into the air inlet pipe and the cooling bin and air-dries the particles, the waste gas treatment pipe is obliquely communicated with the outer wall of the air inlet pipe, and when the air heater inputs the airflow into the air inlet pipe, negative pressure can be generated in the waste gas treatment pipe, so that the particles are dried. And therefore, waste gas generated on the cooling tank is absorbed by the air suction hopper and is filtered by the activated carbon filter screen, the obstruction of the purification pipe on airflow in the air inlet pipe is reduced, and the air drying effect on particles is improved.

The invention relates to the technical field of tail gas treatment, and discloses a tail gas washing treatment device and process based on polyphenylene sulfide product.The tail gas washing treatment device based on polyphenylene sulfide production comprises a dust collector body, a mounting plate is arranged in the dust collector body, and a plurality of venturi tubes distributed in an array mode are arranged at the top of the mounting plate; a frame rod is fixedly connected to the bottom of the venturi tube, a force storage ejection mechanism and a plurality of expansion mechanisms are arranged in the frame rod from top to bottom, and a downward pressing rod is arranged in the center of the force storage ejection mechanism in a penetrating mode. Instantaneous air pressure is converted into power of a force storage block and a threaded rod in a spring energy storage mode, the problems that traditional air pressure driving force is too large, uncontrollability is caused, and impact is large are solved, and therefore a synchronous releasing mechanism of the expansion mechanism is achieved, downward pressure is irrelevant to an air source, and a bottom expansion device can be evenly driven to work; and the service life of the expansion mechanism is prevented from being influenced due to instant work of the expansion mechanism.

The application relates to the technical field of tail gas treatment and discloses a tail gas washing treatment device and process based on polyphenylene sulfide production, wherein the tail gas washing treatment device based on polyphenylene sulfide production comprises a dust collector main body, a mounting plate is arranged in the dust collector main body, a plurality of array distributed venturi tubes are arranged at the top of the mounting plate, a frame rod is fixedly connected to the bottom of the venturi tubes, a force storage and ejection mechanism and a plurality of expansion mechanisms are arranged in the frame rod from top to bottom, respectively, and a lower pressing rod is arranged through the center position of the force storage and ejection mechanism. The instantaneous air pressure is converted into the power of the force storage block and the threaded rod through the spring energy storage mode, the problem that the traditional air pressure driving force is too large to be uncontrollable and the impact is large is solved, the expansion mechanism synchronous release mechanism is realized, the lower pressing force is irrelevant to the air source, the bottom expansion device can be uniformly driven to work, the expansion mechanism is prevented from working instantaneously, and the service life of the expansion mechanism is prevented from being affected.

The utility model discloses a polyphenylene sulfide film production device capable of recycling waste materials, relates to the technical field of polyphenylene sulfide production, and solves the problems of waste of raw materials and increase of production cost due to the fact that cutting edges of polyphenylene sulfide films are not recycled in the prior art. Comprising a machine body, one side of the machine body is connected with a main control screen, and the main control screen is electrically connected with the machine body; the machine body is connected with a heating charging barrel, the top of the heating charging barrel is connected with a hopper, the end part of the heating charging barrel is communicated with an injection nozzle, one side of the injection nozzle is sequentially provided with a casting roller, a cooling roller, a tensioning roller, a cutting roller, a pressing roller, a material distributing roller and a material collecting roller, and the upper part of the machine body is connected with an air cooler. The polyphenylene sulfide waste collecting device has the beneficial effects that polyphenylene sulfide waste can be effectively collected and arranged while efficient production can be achieved, resource waste is reduced, and the resource utilization rate is increased.

The invention discloses a vertical vibration high-temperature furnace for continuously preparing sulfides, and relates to the field of production and preparation of sulfides, the vertical vibration high-temperature furnace is configured as continuous vulcanization equipment for realizing materials based on vibration and gravity, and the continuous vulcanization equipment comprises a feeding system, a vulcanization system, a discharging system, a transfer bin, a control system and a pressure balance system, the feeding system, the vulcanization system, the discharging system and the transfer bin are sequentially communicated and form a closed-loop continuous flow of feeding, vulcanization, discharging and temporary storage; according to the vertical vibration high-temperature furnace, the vertical vibration high-temperature furnace for continuously preparing sulfides, which integrates continuous feeding, efficient vulcanization, safe discharging and pressure regulation and control, is formed through the feeding system, the vulcanization system, the discharging system, the pressure balance system and a vibration and gravity synergistic material conveying mechanism; the method can realize efficient, continuous and safe preparation of sulfide, and meets the requirements of modern industry on large-scale, high-quality and continuous production of sulfide materials.

The utility model relates to the technical field of polyphenyl sulfide production, and disclose a kind of mixing equipment for polyphenyl sulfide production, including jar body, the inner wall of jar body is provided with cavity, heating mechanism is provided on the jar body, the heating mechanism includes electromagnetic induction coil, magnetic metal core, the electromagnetic induction coil is arranged in the cavity of jar body, the magnetic metal core is arranged inside jar body, spiral groove is opened in the outer wall of the magnetic metal core, high-permeability alloy spiral strip is provided on the inner wall of spiral groove.The utility model is heated to the raw material periphery inside jar body by heating ring, simultaneously, electromagnetic induction coil and rotating magnetic metal core are used in cooperation, heat is generated inside stirring rod and stirring blade, the inside and outside of raw material are heated simultaneously, ensure that polyphenyl sulfide raw material is heated evenly, promote melting fully, viscosity is consistent.

The invention discloses an energy-saving solvent recovery system in polyphenylene sulfide production. The energy-saving solvent recovery system comprises a feed preheater, a dividing wall rectifying tower, an in-tower reboiler, a tower bottom reboiler, a third-stage compressor, a second-stage compressor, a first-stage spraying tank, a second-stage spraying tank and a gas-liquid separation tank. According to the recycling method, the equipment investment is reduced, heat in the system is integrated, the heat pump technology is adopted, heat in the system is fully used, a small amount of electric energy is consumed, a large amount of additional steam consumption is saved, and the operation cost is saved.