74 results about "Carbon sulfide" patented technology

The invention relates to a method for preparing lithium sulfide at low temperature by microwave molten salt assisted carbon disulfide-lithium salt reaction, and belongs to the technical field of key materials of lithium-sulfur batteries and solid-state batteries. The technical problems of high energy consumption, difficulty in inhibiting by-products, insufficient purity and crystal phase stability, difficulty in continuous amplification and the like in the existing lithium sulfide preparation process are solved. Comprising the following steps: step 1, performing crushing, screening and grading treatment on lithium source powder; step 2, placing the treated lithium source powder and molten salt in a closed reactor, and introducing CS2 in a gas or liquid form; 3, applying microwave radiation, and reacting at a gas-solid-liquid multiphase interface to generate lithium sulfide; and 4, cooling the material after the reaction to room temperature, separating and recovering the fused salt to obtain the lithium sulfide powder. The method is low in reaction temperature, low in energy consumption, high in reaction rate, high in product purity and suitable for continuous and industrial production.

The invention provides a preparation method and application of a modified PVC adsorbent for gold extraction of carbonaceous gold ore, and belongs to the technical field of organic polymer materials and resource utilization. Based on construction of a hydroxylation-xanthate esterification reaction and bifunctional adsorption sites, a series of chemical modification paths of acetate nucleophilic substitution-hydrolysis-carbon disulfide alkali treatment are established, and xanthate functional groups with high reaction activity are accurately constructed on an inert PVC framework. Sulfur atoms in xanthate groups of the modified PVC are excellent electron donors and can generate strong chemical adsorption with metal impurities or polar sites on the surface of carbon, meanwhile, Van der Waals interaction between a main chain of the modified PVC and the carbon is reserved, and unmodified PVC or single hydroxylated PVC does not have the synergism of chemical adsorption and physical adsorption, so that the modified PVC can be used for preparing the carbon-modified PVC composite material, and the carbon-modified PVC composite material can be used for preparing the carbon-modified PVC composite material. And leap-type improvement of the adsorption capacity and selectivity of organic carbonaceous in minerals is realized.

The present application belongs to the technical field of fine chemical industry, and relates to a recycling method of accelerator M tar. In the waste M tar produced in M production, a catalyst is added, high-temperature decomposition is carried out under nitrogen protection, and recycled raw materials aniline, carbon disulfide and intermediate benzothiazole and the like are obtained, most of which are recycled. The present application adopts common equipment and unit operations, the catalyst can be reused, and the treatment of production waste is easy to realize industrial production.

The invention discloses a method for removing sulfur-containing compounds in a crude oil-prepared cracked gas C3 fraction. The method comprises the following steps: contacting the crude oil-prepared cracked gas C3 fraction with a supported desulfurizer, wherein the load type desulfurizing agent comprises a carrier and a main active component loaded on the carrier; the main active component comprises alkali metal and / or alkaline earth metal; the carrier comprises elementary substances Ag, Ag2O, elementary substances Re and ReOx; reOx is a mixture of a plurality of Re oxides, x = n / 2, and n is 4, 6 or 7; the molar content of the elementary substance Re accounts for 30-45% of the total molar weight of Re in the carrier. The method provided by the invention can effectively remove low-carbon thioether and / or low-carbon mercaptan in the C3 fraction of the crude oil-prepared pyrolysis gas, has the advantages of low removal temperature, simple process, no additional reaction, no influence on downstream hydrogenation and separation processes, and energy consumption saving, and the desulfurizer can be repeatedly regenerated and used, and has long-period stable operation capability.

The invention belongs to the technical field of chemical separation, and discloses a two-stage low-temperature condensation coupling compression separation high-purity hydrogen sulfide purification process and system. The system consists of a two-stage low-temperature condensation unit, a hydrogen sulfide compression unit and a hydrogen sulfide collection unit, the two-stage low-temperature condensation unit comprises a hydrogen sulfide liquid separation tank, a hydrogen sulfide low-temperature cooler, a hydrogen sulfide low-temperature liquid separation tank, a hydrogen sulfide heat exchanger and a hydrogen sulfide saline water liquid separation tank. Hydrogen sulfide raw material gas containing carbon disulfide impurities is sequentially introduced into a two-stage low-temperature condensation unit, carbon disulfide is liquefied and separated out preferentially, low-temperature water is adopted in the first stage, and materials subjected to cryogenic compression throttling are adopted in the second stage for heat exchange; pressurizing and compressing the primarily purified hydrogen sulfide gas-phase component, and then condensing and separating to remove trace carbon disulfide and recover cold energy, thereby finally obtaining the high-purity hydrogen sulfide with the purity of more than or equal to 99.95%. According to the invention, a low-temperature two-stage low-temperature condensation-pressurized compression condensation coupling separation technology is adopted, and deep removal of carbon disulfide is realized under the condition that a third component is not introduced.

The invention relates to the technical field of medicament synthesis, and particularly discloses a microreactor device for preparing liquid isopropyl xanthate, the microreactor device comprises a workbench, the top of the workbench is fixedly connected with a mixing tank through a support, and the two sides and one end of the mixing tank are communicated with feeding pipes; the end, away from the mixing tank, of the feeding pipe communicates with a discharging port of a metering pump, the bottom of the metering pump is fixedly connected with the top of the workbench, the inner wall of the mixing tank is rotationally connected with a mixing device, and the part, located below the mixing tank, of the top of the workbench is fixedly connected with a first motor. According to the microreactor device for preparing the liquid isopropyl xanthate, the mixing device is arranged, so that the mixing efficiency of isopropanol, carbon disulfide and liquid caustic soda before reaction can be improved, and the dosing mechanism is arranged, so that the mixing efficiency of isopropanol, carbon disulfide and liquid caustic soda before reaction can be improved. Therefore, the reaction efficiency of the mixed solution of isopropanol, carbon disulfide and caustic soda liquid during reaction can be improved.

The present disclosure relates to a method for manufacturing a regenerated material capable of effectively utilizing carbon contained in a battery material. The method for producing a recycled material includes the following steps (a) and (b). Step (a): preparing a battery material. Step (b): carbon disulfide is generated by reacting carbon and sulfur contained in the battery material.

A method for producing sulfurizcd-carbon cathode materials for electrochemical cells involves mixing carbon nanofibers, sulfur, and a monomer (e.g., acrylonitrile) to form a mixture, polymerizing the monomer to encapsulate the nanofibers and sulfur within a polymer matrix (e.g., polyacrylonitrile), and pyrolyzing the matrix to chemically bond carbon from the polymer to the nanofibers and sulfur, yielding sulfurized-carbon particles fused to the nanofibers. The pyrolyzed material forms a fluffy powder that is compressed into a free-standing dry film, wherein the nanofibers and longer nanofiber yarns create a three-dimensional conductive network enhancing mechanical stability and electrical conductivity. The film is laminated to a current collector to form a cathode. Optional pore- loading with molecular sulfur improves capacity and cycle life, achieving >70% sulfur utilization without wet processing solvents.

The present application pertains to a method of making carbon disulfide. The method comprises reacting methane and sulfur under conditions sufficient to produce carbon disulfide, hydrogen disulfide, and heat. At least a portion of the produced hydrogen disulfide is reacted with methane under conditions sufficient to produce a mixture comprising carbon disulfide and hydrogen. Advantageously, at least a portion of the heat from reacting methane and sulfur is employed in the reacting of at least a portion of the produced hydrogen disulfide with methane.

The utility model provides a production device for synthesizing TBTD in one step, which comprises a reaction kettle, a di-n-butylamine adding pipeline, a hydrogen peroxide adding pipeline, a carbon disulfide adding pipeline, a soft water adding pipeline, a carbon disulfide gas discharging pipeline and a nitrogen pipeline are arranged at the top end of the reaction kettle, and the carbon disulfide gas discharging pipeline is connected with a gas inlet of a condenser. A condensate outlet pipeline of the condenser is connected with a carbon disulfide receiving tank, a bottom outlet pipeline of the carbon disulfide receiving tank is connected with a carbon disulfide adding pipeline, and the carbon disulfide adding pipeline is further connected with a carbon disulfide transfer pump; hydrogen peroxide is adopted as an oxidizing agent, so that high-salinity wastewater discharge is reduced; the reaction liquid is washed with water for many times to remove residual alkali liquor and byproducts, water is used as a solvent to replace a traditional methanol / ethanol system, and emission of VOCs is reduced; the metering pump is used for dropwise adding materials, so that automatic sealing feeding is realized, and harm to bodies of workers is reduced; carbon disulfide is recycled for next reaction, so that the material loss is reduced, and the pollution problem in the subsequent treatment process is reduced.

This invention relates to the field of phosphogypsum resource utilization, specifically disclosing a method for preparing light calcium carbonate and co-producing sulfuric acid by decomposing phosphogypsum. The method includes the following steps: adding a deagglomerating agent to phosphogypsum, followed by flotation and water washing to obtain purified phosphogypsum; drying and heating the purified phosphogypsum in a preheating furnace; mixing the dried phosphogypsum with carbon sulfide and adding it to a first-stage airlift circulating reactor, while introducing sulfur gas; conveying the reacted material to a second-stage airlift circulating reactor, where the reaction yields calcium oxide and a mixture of sulfur dioxide and carbon dioxide; catalytically oxidizing and absorbing the carbon dioxide mixture to obtain sulfuric acid and carbon dioxide gas; dissolving calcium oxide in water and introducing carbon dioxide gas to obtain a calcium carbonate suspension; filtering and drying the calcium carbonate suspension to obtain light calcium carbonate. This invention solves the problems of low purity and high decomposition temperature of calcium oxide products in existing technologies, achieving closed-loop material circulation and full component utilization.

The invention discloses a continuous reaction system and method for co-producing solid and liquid sodium ethyl xanthate, and relates to the technical field of sodium ethyl xanthate production. The system comprises a reaction kettle, a stirring motor, a raw material discharging pipe, an alkali liquor discharging pipe, a discharging pipe, a circulating liquid outlet pipeline, a centrifugal machine, a drying machine, a xanthate storage tank, a plurality of groups of control valves and a plurality of groups of backflow pipelines, which form a closed-loop reaction and separation system. The method comprises the following steps: feeding ethanol, carbon disulfide and caustic soda liquid with the concentration of more than or equal to 40% according to a molar ratio of 1: (0.9-1.2): (1.0-1.2), carrying out an initial reaction at 30-36 DEG C for 2.5-4.5 h, carrying out circulating separation, mother liquor recycling and continuous alkali supplementation to realize continuous production, and simultaneously producing liquid sodium ethyl xanthate and solid xanthate obtained by drying at 40-60 DEG C for 0.5-2.5 h. According to the method, reaction balance is promoted through high-concentration alkali, the raw material conversion rate is increased, the problem of solid precipitation is solved through the process of reaction-separation-recycling, product diversification is achieved, batch reaction is upgraded to continuous production, the productivity and stability are improved, and different market requirements are met.

The utility model discloses a tetraethylthiuram disulfide production reaction device which comprises a reaction kettle, a stirring structure is arranged in the reaction kettle, a jacket is arranged outside the reaction kettle, and an ethanol solution adding pipeline, a diethylamine adding pipeline, a hydrogen peroxide adding pipeline and a carbon disulfide adding pipeline are arranged at the top end of the reaction kettle. The ethanol solution adding pipeline is connected with a liquid outlet of the ethanol solution static mixer, an ethanol inlet pipeline and a soft water inlet pipeline are arranged on the ethanol solution static mixer, and the carbon disulfide gas discharging pipeline is connected with a gas inlet of the condenser; a condensate outlet pipeline of the condenser is connected with a carbon disulfide receiving tank, a bottom outlet pipeline of the carbon disulfide receiving tank is connected with a carbon disulfide adding pipeline, the carbon disulfide adding pipeline is further connected with a carbon disulfide transfer pump, and a carbon disulfide metering pump is arranged on the carbon disulfide adding pipeline. One-step safe production of tetraethylthiuram disulfide can be realized, and the production efficiency is improved.

The invention belongs to the field of pesticides, and discloses a compound with a structure as shown in a formula I. A preparation method of the compound comprises the following steps: reacting anthranilic acid with formamide, and then reacting with 1, 4-dibromobutane under the action of sodium hydride to obtain 3-(4-bromobutyl) quinazoline-4 (3H)-ketone; then, phenylacetic acid sequentially reacts with methyl alcohol, hydrazine hydrate, potassium hydroxide, carbon disulfide and 3-(4-bromobutyl) quinazoline-4 (3H)-ketone, and the quinazolinone derivative containing the oxadiazole unit is obtained. The quinazolinone derivative containing the oxadiazole unit is a novel compound, has an inhibiting effect on fusarium graminearum, rhizoctonia solani and botrytis cinerea, and can be used for preventing and treating plant diseases caused by fungi.

The invention relates to the technical field of gas purification and chemical catalysts, and discloses a preparation method and application of a carbon-based sulfur hydrolysis catalyst, and the preparation method comprises the following steps: preparing the carbon-based sulfur hydrolysis catalyst from sulfolane, monopropanolamine, tripropanolamine and water through temperature-controlled mutual dissolution and precise filtration; the application method of the carbon-based sulfur hydrolysis catalyst comprises the following steps: spraying the carbon-based sulfur hydrolysis catalyst into an absorption tower, and constructing a double-temperature area in the absorption tower; maintaining high temperature in the lower area of the absorption tower, and catalyzing carbon disulfide and carbon sulfide to hydrolyze by utilizing monopropanolamine; the upper area of the absorption tower is kept at low temperature, tripropanolamine is used for absorbing hydrogen sulfide and carbon dioxide, the carbon-based sulfur hydrolysis catalyst absorbing gas is conveyed to a desorption tower, hydrogen sulfide and carbon dioxide are desorbed through high temperature and negative pressure to serve as product gas, and a regenerated solution is recycled. The method provided by the invention solves the contradiction between carbon disulfide hydrolysis and product absorption, and realizes conversion and resource recovery of organic sulfur.

To provide a method for effectively utilizing carbon contained in a battery material.SOLUTION: The method for producing a recycled material includes the following (a) and (b). (a) preparing a battery material; (b) Carbon contained in the battery material is reacted with sulfur to produce carbon disulfide.SELECTED DRAWING: Figure 1

To provide a technique suitable for desulfurization of a gas containing carbon sulfide.SOLUTION: The desulfurization process includes first contacting the source gas 50 with an amine-bearing agent 102 to reduce carbon sulfides in the source gas 50. The amine-bearing agent 102 has an amine as a functional group. The desulfurization method includes reducing hydrogen sulfide generated by the first contact in the source gas 50.SELECTED DRAWING: Figure 2

The utility model discloses a carbon disulfide sealed storage device which comprises a sealed storage tank and is characterized in that a cooling coil is wound outside the lower part of the sealed storage tank, and a carbon disulfide liquid inlet pipeline, a nitrogen inlet pipeline, a water seal water inlet pipeline, a non-condensable gas exhaust pipeline and a condensate recovery pipe are arranged at the top end of the sealed storage tank; a non-condensable gas exhaust pipeline is connected with a gas inlet pipe of a condenser, a condensate outlet pipeline of the condenser is connected with a condensate recovery pipe, a carbon disulfide outlet pipeline is arranged at the bottom end of the sealed storage tank, and a water seal pipeline is arranged at the top of the side face of the sealed storage tank and connected with a carbon disulfide water seal pool. The carbon disulfide water seal tank is connected with an inlet pipeline of the water seal pump through a water outlet pipeline; and a branch pipe is branched from an outlet pipeline of the water seal pump and is connected with a water seal water inlet pipeline. By means of the sealing device, sealing of carbon disulfide can be guaranteed, air is isolated, the risk of combustion explosion is reduced, and the situation that the carbon disulfide volatilizes into the air and harms the bodies of workers is avoided.

The invention relates to the technical field of electroplating, in particular to dithiocarbonate sulfonate, a preparation method thereof and a copper plating solution. The preparation method of the dithiocarbonate sulfonate comprises the following steps: preparing an alkaline alcohol solution, wherein the alkaline alcohol solution comprises an alcohol compound; adding carbon disulfide into the alkaline alcohol solution, carrying out nucleophilic addition reaction on a certain content of the alcohol compound and the carbon disulfide to generate dithiocarbonate, and dissolving the dithiocarbonate into the residual content of the alcohol compound to obtain a reaction solution; and adding a sultone compound into the reaction solution, carrying out nucleophilic substitution reaction on the dithiocarbonate and the sultone compound, and generating and separating out the dithiocarbonate sulfonate. The synthesis route of the dithiocarbonate sulfonate is enriched, and the synthesized compound can meet the performance requirements of copper plating brighteners.

The application provides a gold-bearing pyrite coarse particle flotation collector and a preparation method and application thereof. The gold-bearing pyrite coarse particle flotation collector has a general structure as shown in the specification, wherein R1 and R2 are independently selected from hydrogen, C1-C12 substituted or non-substituted alkyl, C1-C12 substituted or non-substituted saturated alkyl, C1-C12 substituted or non-substituted unsaturated hydrocarbon, and C1-C12 substituted or non-substituted cycloalkyl. The preparation method of the gold-bearing pyrite coarse particle flotation collector comprises the following steps: mixing raw materials including water, alkylamine, carbon disulfide, alkali, an oxidizing agent and EDTA, and reacting to obtain the gold-bearing pyrite coarse particle flotation collector. The gold-bearing pyrite coarse particle flotation collector is applied to gold-bearing pyrite flotation and tailing discarding. The gold-bearing pyrite coarse particle flotation collector provided by the application has multiple solid-philic groups, can make the mineral surface sufficiently hydrophobic, and can make coarse particle minerals float, so that the coarse particle mineral flotation and tailing discarding are realized.

The utility model discloses a centralized volatilization mechanism for carbon disulfide collection, which comprises an alkali washing pool, a collection box is arranged at the top of the alkali washing pool, a separation plate is arranged between the alkali washing pool and the collection box, and the separation plate is movably connected with the collection box through a transmission mechanism; an adsorption layer is arranged above the isolation plate and divides the collection box into an upper volatilization cavity and a lower concentration cavity, heating plates are symmetrically installed on the inner wall of the concentration cavity, and an air outlet is formed in the side wall of the volatilization cavity and communicates with the condensation mechanism. The transmission mechanism is arranged to adjust the isolation plate, so that the isolation plate can be opened at a certain time interval, carbon disulfide volatilized in the alkali washing pool is subjected to centralized treatment, carbon disulfide is subjected to adsorption treatment through the adsorption layer, and the adsorption layer is heated, so that carbon disulfide gas is volatilized; and condensing to obtain liquid carbon disulfide, thereby realizing centralized treatment of volatile carbon disulfide collection.

The invention belongs to the field of high polymer materials, and particularly relates to a cellulose-based thermoplastic elastomer with ultraviolet absorption performance and a preparation method thereof.The preparation method comprises the following steps that cellulose and 2-bromoisobutyryl bromide react in ionic liquid, and brominated cellulose is obtained; in the presence of triethylamine, lauryl mercaptan and carbon disulfide, brominated cellulose reacts in a solvent dimethyl sulfoxide to obtain the cellulose macroinitiator. The preparation method comprises the following steps: under the action of a catalyst azodiisobutyronitrile, carrying out reversible addition-fragmentation chain transfer polymerization reaction on a cellulose macromolecular chain transfer agent, an ethylhexyl acrylate monomer and an acrylic acid vanillin monomer in a solvent N, N-dimethylformamide to obtain cellulose-g-(ethylhexyl acrylate copolymerized acrylic acid vanillin); according to the invention, cellulose is used as a main chain, and a copolymer (namely poly (ethylhexyl acrylate-co-acrylic acid vanillin)) side chain is grafted, so that the obtained elastomer has excellent elasticity and strength performance. Meanwhile, the material has a certain ultraviolet absorption function, so that the material has certain application potential in the field of delaying light aging, color fading and yellowing functions.

The application discloses a preparation method and application of a dithio-carbamate compound / polypolydithio-carbamate compound. The dithio-carbamate compound / polypolydithio-carbamate compound is obtained by reacting an amine compound, an isonitrile compound, carbon disulfide and a mercaptan compound in an organic solvent in the presence of a base. The raw materials used in the application are all industrial raw materials, which can be directly purchased and have low cost, and can be produced in a large scale of gram grade. The polymerization operation is simple, the yield is high, the reaction condition is mild, no metal catalyst is needed, the reaction can be carried out at room temperature and in the air, and no toxic and harmful by-products are generated. The polypolydithio-carbamate compound obtained by the application also has excellent mechanical properties and luminescent properties, and can be applied to the fields of mechanical materials and optoelectronic devices, thereby promoting the further development of the polypolydithio-carbamate compound.

The invention discloses a dithioformate-metal coordination two-dimensional network material, composite hydrogel and application thereof, and belongs to the field of biomedical materials. The preparation method comprises the following steps: preparing ammonium p-phenylenediamine dithiocarbamate (DTC) by taking p-phenylenediamine and carbon disulfide as raw materials, water as a solvent and ammonia water as a catalyst; and reacting the trivalent metal salt with DTC to form a two-dimensional network material. The two-dimensional network material is doped into the chemical cross-linked polyvinyl alcohol / polyethylene glycol hydrogel, and the composite hydrogel has excellent mechanical properties, good antibacterial performance and the effects of scavenging free radicals and relieving inflammation. Experiments prove that the hydrogel is used for tissues with the intervertebral disc nucleus pulposus degeneration, has good development and can effectively display the injection and filling effects of the hydrogel, and a new direction is provided for treatment of the intervertebral disc nucleus pulposus degeneration.

The application provides a carbon disulfide concentration measurement system and method based on ultraviolet light-induced conversion, and relates to the field of gas concentration detection. The carbon disulfide concentration measurement system based on ultraviolet light-induced conversion comprises a stainless steel spiral ventilation pipe, a quartz spiral ventilation pipe, a mercury lamp, a light shield, a temperature control chamber, a deuterium lamp, a first lens, a gas cell, a second lens, an optical fiber, a spectrometer and a computer; the gas inlet of the stainless steel spiral ventilation pipe is used for receiving carbon disulfide gas to be measured, the gas outlet of the stainless steel spiral ventilation pipe is connected with the quartz spiral ventilation pipe in a penetrating mode, and the stainless steel spiral ventilation pipe and the quartz spiral ventilation pipe are arranged in the temperature control chamber. When the carbon disulfide sensor technology is used to measure the carbon disulfide concentration, the problems of signal attenuation with time, difficulty in continuous long-time detection of trace carbon disulfide in an industrial environment, the need for regular maintenance and high cost of a spectral detection method instrument are solved.

A method for preparing diisopropyl xanthate, a solid base catalyst is filled into a fixed bed reactor after being immobilized with molybdenum disulfide, a mixed solution of isopropyl alcohol, carbon disulfide and an organic solvent is injected into a micro-mixer through a feeding pump at the same time with oxygen or air, the gas-liquid mixture is fully mixed and then enters the fixed bed for heterogeneous catalytic oxidation reaction. The solid base-immobilized composite catalyst has long service life and good stability; the composite base catalyst can provide an alkaline environment to promote the formation of intermediates and avoid the generation of high-salt wastewater; a micro-mixer is added at the front end of the fixed bed reactor to realize the full mixing of gas-liquid, so that the gas-liquid heterogeneous catalytic oxidation reaction can be continuously carried out with high efficiency and high selectivity; oxygen or air which is cheap and easy to obtain is used as the oxidant, and the by-product is water, basically without three wastes.

The application discloses a kind of MOCVD preparation method and device of wafer level single crystal molybdenum disulfide;The preparation method uses six carbonyl molybdenum Mo (CO) 6 and liquid carbon disulfide CS2 as molybdenum source and sulfur source respectively, different from traditional MOCVD growth process, precursor used in the application does not contain hydrogen element, avoid the side effect caused by hydrogen element, and increase the pre-reaction of source cracking, by introducing oxygen, generate intermediate product molybdenum trioxide (MoO3) and sulfur element (S) in pre-reaction chamber, to the reaction chamber on the substrate surface deposition, effectively avoid the introduction of carbon impurities, realize the nucleation and epitaxial growth of single crystal orientation on the substrate surface, obtain high uniformity and continuity single crystal molybdenum disulfide film, realize 6 inch and above size single crystal wafer scale preparation, meet the key needs of high density, high performance electronic device integration.

The utility model discloses a TETD production system, which comprises a reaction kettle and is characterized in that a stirring structure is arranged in the reaction kettle, a jacket is arranged outside the reaction kettle, and the stirring structure is arranged in the jacket. An n-butyl alcohol adding pipeline, a diethylamine adding pipeline, a hydrogen peroxide adding pipeline, a carbon disulfide adding pipeline and a carbon disulfide gas discharging pipeline are arranged at the top end of the reaction kettle, and the n-butyl alcohol adding pipeline is connected with an n-butyl alcohol storage tank through an n-butyl alcohol metering pump; according to the utility model, dropwise adding materials are added through the metering pumps, each metering pump is connected with each storage tank, automatic sealing feeding is realized, the harm to the body of a worker is reduced, carbon disulfide and n-butyl alcohol are recovered for next reaction after the reaction is finished, the loss of the materials is reduced, the production cost is reduced, and the production efficiency is improved. And meanwhile, the pollution problem in the subsequent treatment process is reduced.

The invention discloses equipment and a method for recycling carbon disulfide in xanthate production tail gas, and relates to the technical field of chemical beneficiation reagents. The method comprises the following steps: separating by utilizing the characteristic that carbon disulfide and other component VOCs gas in the tail gas have different dissolution and diffusion speeds in a membrane, concentrating most of carbon disulfide gas through the membrane by utilizing the pressure difference between two sides of the membrane, and recovering by a condenser, and feeding the uncondensed carbon disulfide gas into a tail gas buffer tank again for secondary recovery and utilization. And in addition, the system does not introduce a new pollution source and does not generate secondary pollution.

The utility model provides a carbon disulfide tail gas recovery system which comprises a liquid nitrogen storage tank and a first condensation system, the first condensation system comprises an ethylene glycol storage tank, a first heat exchanger and an ethylene glycol heat exchanger, a shell pass inlet of the first heat exchanger is used for introducing carbon disulfide tail gas, and a tube pass inlet of the first heat exchanger is communicated with an outlet of the ethylene glycol storage tank; a condensate discharge outlet of the first heat exchanger is used for discharging carbon disulfide condensate, a tube pass inlet of the ethylene glycol heat exchanger communicates with a tube pass outlet of the first heat exchanger, a tube pass outlet of the ethylene glycol heat exchanger communicates with an inlet of the ethylene glycol storage tank, and a shell pass inlet of the ethylene glycol heat exchanger communicates with a first outlet of the liquid nitrogen storage tank. The ethylene glycol solution is provided for the tube pass of the first heat exchanger through the ethylene glycol storage tank, based on the fact that the specific heat capacity of the ethylene glycol solution is large, the ethylene glycol solution transmits the cooling capacity of liquid nitrogen to carbon disulfide tail gas, most of gaseous water in the carbon disulfide tail gas is condensed into liquid, and the phenomenon that the first preheater is possibly blocked by ice is avoided.