37results about "Carbon disulfide" patented technology

The invention discloses a rectification mechanism and a carbon disulfide production system containing the same. The rectification mechanism comprises an integrated rectification tower, and an inner cavity of a shell of the integrated rectification tower is sequentially divided into a function-integrated pre-separation and sulfur removal area, a main rectification and hydrogen sulfide removal area and a condensation reflux area from bottom to top in the vertical direction; the pre-separation and sulfur removal area comprises a settling tank arranged at the lower part of the shell, a gathering cover arranged above the inner wall of the settling tank, and a gas rising pipe I arranged above the gathering cover; the invention belongs to the technical field of chemical separation, and achieves the technical effects that multi-stage functions of pre-separation, main rectification, precise purification, final condensation and the like are innovatively integrated in a single tower, so that the fundamental simplification and compactness of the equipment structure are realized; in the traditional process, separate coarse removal, fine removal and finished product towers are replaced by unique expanded settling tanks in the towers, filler layers of integrated plate heat exchangers, tower tops with spiral condensation channels and side-draw systems.

The invention discloses an ardealite resource comprehensive utilization method and application thereof, and belongs to the technical field of ardealite resource utilization. The method comprises the following steps: S1, mixing ardealite and a reducing agent to obtain a mixture; s2, performing high-temperature decomposition treatment on the mixture in an inert atmosphere to obtain decomposed gas and a decomposed product; s3, sulfuric acid and / or carbon disulfide are / is prepared with the decomposition gas as the raw material, and the decomposition product is used for metallurgical steelmaking; according to the method, ferrous sulfide is used as a reducing agent, under the inert atmosphere, phosphogypsum is reduced into calcium oxide and calcium ferrite, generated sulfur dioxide tail gas is recycled, and comprehensive utilization of calcium and sulfur resources of phosphogypsum solid waste is achieved; the recycled sulfur dioxide can be used for preparing sulfuric acid and / or carbon disulfide, meanwhile, calcium oxide and calcium ferrite can serve as an adhesive and a slag former to be used for efficient metallurgical steelmaking, and the comprehensive utilization method for ardealite resources has a good application prospect.

Methods for the in-situ production of one or more chemical products in a subterranean well include the steps of admitting natural gas into the well from the surrounding subterranean formation, directing the natural gas into a downhole reactor in the well, reacting the natural gas within the downhole reactor to produce an intermediate product stream that includes the one or more chemical products, and withdrawing the intermediate product stream and the one or more chemical products from the downhole reactor. The methods can be earned out in a downhole reactor (22) that includes a reaction chamber (26) inside tubing (20) and an inlet valve (24) adapted to control the introduction of natural gas into the reaction chamber (26).

The invention relates to an efficient gas-solid reaction process and an integrated industrial system, and belongs to the technical field of gas-solid reaction in chemical production. The process flow comprises the following steps: crushing and drying coke by a pulverizing unit, preheating the coke and sulfur steam to be greater than or equal to 550 DEG C, and jointly entering a gas-solid reaction unit; and the product enters a gas-solid separation unit, is subjected to two-stage gas-solid separation at a high temperature of 450-680 DEG C and a low temperature of less than or equal to 200 DEG C, and then is The integrated industrial system based on the efficient gas-solid reaction process is applied to carbon disulfide production through a coke method, the problems of external heat supply and byproduct generation control in the reaction process of coke and sulfur are solved, and the system is simple in process chain, easy and convenient to operate, compact in structure and suitable for continuous and closed carbon disulfide production requirements through the coke method.

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 and a device for recovering sulfur and valuable metals based on plasma cracking sulfide ore in the field of sulfide ore resource recycling, and the method comprises the following steps: step 1) crushing the sulfide ore to 200-400 meshes through a raw material pretreatment system, and premixing the crushed sulfide ore with a carbon source according to a C / S molar ratio of 1.2-1.5; and step 2), feeding the premixed raw materials into a plasma reactor, reacting in a high-temperature field (the temperature of a main discharge region is 8000 + / -500K) generated by a multi-stage arc, controlling the reaction retention time to be 0.5-1.2 seconds, and controlling the high-temperature region to maintain cracking and the medium-temperature region to promote CS2 synthesis through a sectional temperature control module. Compared with a traditional method, the recovery rate is remarkably improved, and the utilization efficiency of sulfide ore resources is greatly improved. And meanwhile, by utilizing the advantage of instantaneous heating of the plasma, the energy consumption is further reduced, the production cost is reduced, SO2 emission is thoroughly avoided, the problem of environmental pollution of traditional pyrogenic process smelting is solved from the source, and remarkable environmental protection benefits are achieved.

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.

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 invention relates to the technical field of methane-hydrogen sulfide reforming, in particular to a preparation method and application of a molybdenum-based catalytic material for methane-hydrogen sulfide reforming. The preparation method comprises the following steps: S1, calcining nano gamma aluminum oxide; s2, treating the calcined nano gamma aluminum oxide with a sodium citrate solution; s3, the polystyrene microspheres are treated through dodecyl trimethyl ammonium bromide; s4, combining the nano gamma aluminum oxide treated in the step S2 with the polystyrene microspheres treated in the step S3; s5, adding ammonium molybdate tetrahydrate, metal salt and the nano gamma aluminum oxide assembled in the step S3 into deionized water to obtain a precursor; s6, calcining and grinding the precursor obtained in the step S5 to obtain a primary catalytic material; and S7, vulcanizing the primary catalytic material obtained in the step S6 to obtain the catalytic material. The catalytic material prepared in the invention has high activity and high methane conversion efficiency.

A system for hydrogen production including a first separation system (10), a first purification unit (17), a second purification unit (19), an oxygen scavenger (25), a catalytic reactor (29), a second separation system (33), and a liquefier (39). A method for hydrogen production including separating oxygen-containing components from a feed (5) also containing hydrogen sulfide and methane. The method further includes separating the hydrogen sulfide from the methane and feeding the hydrogen sulfide (13) to a first purification unit (17). The method includes feeding the methane (15) to a second purification unit (19). The method further includes feeding the purified hydrogen sulfide and methane to an oxygen scavenger unit (25) to remove residual oxygen before reacting the two streams in a catalytic reactor (29). The method includes separating the gaseous hydrogen and liquid carbon disulfide (31) exiting the catalytic reactor (29) and then purifying and liquefying the gaseous hydrogen stream (34) to produce a purified liquid hydrogen stream (41).

This application relates to a heating furnace for carbon disulfide production, belonging to the technical field of carbon disulfide production. It includes: a furnace body, including an outer furnace box body, an inner furnace box body and support pipes; a sulfur supply assembly, including a combustion chamber, a liquid sulfur pipe and a nozzle; a methane supply assembly, including a methane gas pipe, a transfer piece, a connecting pipe and a mixing plate; a mixing assembly, including a rotating blade, a driving fan blade, a bevel gear ring, a bevel gear and a guiding fan blade; an exhaust assembly, including a first discharge pipe, a second discharge pipe, a third discharge pipe and a fourth discharge pipe; by uniformly introducing gaseous sulfur and methane gas into the inner furnace box body and stirring and turning the gaseous sulfur and methane gas through the mixing plate, the sulfur and methane are easily mixed evenly, which can increase the output of carbon disulfide and is conducive to the efficient production of carbon disulfide. This application has the effect of improving the mixing degree of sulfur and methane.

The present application relates to the technical fields of reaction furnace, in particular to a kind of inner heating type continuous semi-coke method carbon disulfide reaction furnace without harmful gas emission, including shell, the inner chamber of the shell is equipped with reaction kettle, the outer surface wall of the reaction kettle is connected with sulphur pipe that penetrates the lateral wall of shell, the bottom of the reaction kettle is connected with discharge pipe, the discharge pipe is directly below being provided with discharge bin, the top side of the discharge bin is connected with the discharge pipe between anti-leakage outer frame, the side of the discharge bin is equipped with driving motor, the one end of the driving motor is equipped with threaded transmission rod that penetrates the lateral wall of discharge bin inner chamber;The present application utilizes the waste heat of exhaust gas, heats neutralizing liquid, so that atomization effect is better, improves work efficiency, reduces the production cost of user, simultaneously can also adjust the volume of first discharge bin and second discharge bin, further adjusts the adding amount according to different granularity semi-coke, and makes the inactivated activated carbon plate revive, improves the versatility and durability of device.

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

The application relates to the technical field of catalysts, in particular to a preparation method of a modified carrier catalyst and application of the modified carrier catalyst in a light-concentrating catalytic methane hydrogen sulfide reforming reaction, and the preparation method comprises the following steps: S1. preparing a modified carrier; S2. stirring a modified carrier modification precursor solution at a medium speed, then reacting under water bath conditions for 3-4 hours, and naturally cooling to room temperature; S3. centrifugally separating the solution obtained in the step S2, washing with deionized water and anhydrous ethanol for 3-4 times, vacuum drying at 50-60 DEG C for 10-12 hours, calcining for 1-2 hours, grinding into powder, and finally obtaining the modified carrier catalyst by screening through a 200-mesh screen. The application realizes partial organic hydrophobic modification of the surface of the carrier through the synergistic effect of the modified carrier and an acidic modification liquid, enhances the affinity for non-polar CH4 molecules, and constructs a composite oxide carrier which has suitable surface acidity, excellent light responsiveness and good dispersity.

A system for hydrogen production including a first separation system, a first purification unit, a second purification unit, an oxygen scavenger, a catalytic reactor, a second separation system, and a liquefier. A method for hydrogen production including separating oxygen-containing components from a feed also containing hydrogen sulfide and methane. The method further includes separating the hydrogen sulfide from the methane and feeding the hydrogen sulfide to a first purification unit. The method includes feeding the methane to a second purification unit. The method further includes feeding the purified hydrogen sulfide and methane to an oxygen scavenger unit to remove residual oxygen before reacting the two streams in a catalytic reactor. The method includes separating the gaseous hydrogen and liquid carbon disulfide exiting the catalytic reactor and then purifying and liquefying the gaseous hydrogen stream to produce a purified liquid hydrogen stream.

This invention discloses a system and method for plasma reduction of sulfide ores to produce metals and carbon disulfide in the fields of non-ferrous metal metallurgy and high-value utilization of sulfur resources. The system includes a raw material preparation and conveying unit, a plasma reaction unit, and a condensation and recovery unit. The method involves mixing sulfide ore powder and carbon powder, which are then fed into a plasma gun by a carrier gas. A rapid reduction reaction occurs under ultra-high plasma temperature, generating molten metal and carbon disulfide gas in one step. The molten metal is collected at the bottom of the furnace and released. The high-temperature flue gas is rapidly cooled, dusted, and deeply condensed before being recovered as a high-purity liquid product. This invention achieves a streamlined process for sulfide ore smelting, recovers sulfur resources in a high-value form, avoids sulfur dioxide pollution, and has the outstanding advantages of high efficiency, low carbon footprint, and good economic benefits.

A method for recovering sulfur and organic stabilizer from a carbon disulfide solution containing organic stabilizer and sulfur is characterized by first adding a certain amount of water to the carbon disulfide solution, then gradually raising the temperature to vaporize and condense the carbon disulfide for recovery. Finally, the organic stabilizer floats on the water surface, while the sulfur crystallizes below the surface. The sulfur is separated from the water surface, and the organic stabilizer is separated from the surface. The separated crude sulfur is added to a low-molecular-weight hydrocarbon solvent, heated under reflux, then separated, and finally vacuum dried to obtain sulfur.

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.

Process for the simultaneous production of synthesis gas and carbon disulfide (CS2), in which a gas mixture comprising hydrogen sulfide, carbon dioxide and methane is used as starting material and the gases are reacted under the influence of concentrated solar radiation in the absence of oxygen at a temperature of 1200 °C or more, whereby the following reaction takes place: 2 H2S + CO2 + 2 CH4 → 2 CO + 6 H2 + CS2.

The invention discloses a separation tower and a carbon disulfide production system containing the separation tower. The separation tower comprises a separation tower for primarily cooling and washing sulfur-containing gas-liquid mixed process gas from a reactor; the system further comprises an internal circulation unit, a heat recovery unit and a control unit. The separation tower comprises a tower shell, a first-stage washing and cooling section and a second-stage fine washing section are arranged in the tower shell from bottom to top, a liquid collector is arranged below the second-stage fine washing section, and the liquid collector is provided with a gas-liquid shunting structure for enabling gas to pass through and guiding liquid and is communicated with a carbon disulfide discharge hole formed in the tower shell; the invention belongs to the technical field of chemical separation, and achieves the technical effects that self-produced crude carbon disulfide is used as a part of washing liquid for circulation and is preheated by combining with waste heat of tower top gas, waste heat is recovered in the preheating process, and the requirement of the system for external cooling load is reduced.

The invention relates to the technical field of renewable energy source preparation, in particular to a methanol preparation process for wind-light-biomass coupled peak regulation and CO2 circulation. The process is a green methanol preparation process based on coupling peak regulation of wind-solar power generation and biomass boiler power generation and cyclic utilization of carbon dioxide. Wind-solar power generation and biomass power generation cooperate for power supply, and biomass power generation is utilized for flexible peak regulation, so that stable operation of the device for preparing hydrogen and oxygen from alkaline electrolyzed water and synthesizing methanol is guaranteed. Carbon dioxide captured by biomass boiler flue gas is divided and utilized, part of carbon dioxide flows back to replace air to serve as a combustion improver, nitric oxide can be eliminated without modifying the boiler structure, the combustion efficiency is improved, the concentration of carbon dioxide after combustion reaches 95% or above, and the recovery cost is reduced. And residual carbon dioxide and green hydrogen are synthesized into methanol to realize carbon circulation. The process integrates various production links to form a substance circulation system, has the advantages of zero carbon emission, high energy complementation efficiency, low equipment modification cost and the like, and provides an efficient solution for fusion of green chemical industry and renewable energy sources.

The present disclosure relates to a method of producing a recycled material. The method of producing a recycled material includes the following (a) and (b). (a) Preparing a battery material. (b) Generating carbon disulfide by causing carbon that is included in the battery material and sulfur to react with each other.

The application discloses a hydrogen sulfide and methane reforming device, which at least comprises: a reforming unit arranged at the bottom of the device and having a reforming settling zone and a reforming reaction zone; in the reforming reaction zone in the form of a fluidized bed, H2S and CH4 are used as fluidized gas, and H2S and CH4 are converted into H2 and CS2 through a reforming reaction under the action of a sulfidized catalyst; a regeneration unit having a regeneration zone and a regeneration settling zone arranged at the top of the device; the regeneration zone is an internal space of a riser pipe extending upward from the bottom of the device to the regeneration settling zone, and is used for driving the deactivated catalyst from the reforming reaction zone to move upward and be oxidatively regenerated by taking air as fluidized gas; and a sulfidation unit having an upper gas collecting zone for guiding H2S gas to be bended, a sulfidation zone and a lower gas collecting zone; the sulfidation zone is a radial reaction zone, in the sulfidation zone, the oxidized catalyst from the regeneration settling zone moving axially downward is contacted with the radial H2S gas, and the oxidized catalyst is pre-sulfidized by taking H2S as sulfidation gas, so that the sulfidized catalyst is generated and is conveyed downward to the reforming settling zone.

This invention relates to the field of catalyst technology, specifically to a method for preparing and applying a modified metal sulfide catalyst for the co-conversion of acidic natural gas. The preparation method includes: S1. Dissolving ammonium molybdate tetrahydrate in a modified solvent and stirring until completely dissolved to obtain a transparent and homogeneous solution; S2. Adding 2-3 parts of a modified support precursor to the solution and transferring it to an autoclave for reaction for 22-24 hours; S3. Centrifuging the solution and washing the precipitate 2-3 times with deionized water and anhydrous ethanol, respectively, followed by drying and grinding to obtain the modified metal sulfide catalyst. This invention utilizes concentrated light technology to synergistically apply light and heat energy to the reaction system, achieving high-efficiency conversion at a lower temperature (450-550℃) and atmospheric pressure compared to traditional thermocatalysis, significantly reducing energy consumption. It is the first catalyst designed for CH4. 4 and H 2 A metal sulfide composite catalyst system for S-concentrated photocatalytic co-conversion converts two harmful / low-value gases into high-value CS in one step. 2 and clean H 2 This has enabled "waste treatment" and resource recycling.

The present application relates to the technical field of waste gas purification, and particularly relates to a spraying cooling mechanism and a carbon disulfide preliminary separation tower comprising the same, which comprises a tower body, an air inlet arranged at the bottom of the tower body, an air outlet arranged at the top of the tower body, a water inlet pipe arranged at one side of the tower body and connected with a spraying head arranged inside the tower body, a positioning plate fixedly arranged inside the tower body and located below the spraying head, a rotating rod rotatably connected with the bottom of the positioning plate, a rotating cylinder fixedly connected with the end of the rotating rod away from the positioning plate, a movable rod arranged in an annular array outside the rotating cylinder and provided in multiple, a fixed frame fixedly arranged at the end of the movable rod away from the rotating cylinder and provided with a groove, and a throwing assembly arranged in the rotating cylinder and used for driving the fixed frame to overturn. The spraying cooling mechanism provided by the present application drives the movable rod and the fixed frame to overturn one circle through the throwing assembly, so that the liquid in the groove is thrown out, and the gas-liquid mixing degree is improved.

The invention relates to the technical field of catalysts, in particular to a preparation method and application of a modified metal sulfide catalyst for synergistic conversion of acidic natural gas, and the preparation method comprises the following steps: S1, dissolving ammonium molybdate tetrahydrate in a modified solvent, and stirring until the ammonium molybdate tetrahydrate is completely dissolved to obtain a transparent uniform solution; s2, adding 2-3 parts of a modified carrier precursor into the solution, transferring into a high-pressure sterilizer, and reacting for 22-24 hours; and S3, centrifuging the solution, washing the precipitate with deionized water and absolute ethyl alcohol for 2-3 times respectively, and drying and grinding to obtain the modified metal sulfide catalyst. The light condensation technology is utilized, light energy and heat energy act on a reaction system in a synergistic mode, efficient conversion is achieved at the lower temperature (450-550 DEG C) and under the normal pressure compared with traditional thermocatalysis, and energy consumption is remarkably reduced. A metal sulfide composite catalyst system for condensation catalytic co-conversion of CH4 and H2S is designed for the first time, two harmful / low-value gases are converted into high-value CS2 and clean H2 in one step, and'waste treatment with waste 'and resource recovery are realized.

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 discloses a benzene-free carbon disulfide production system. The system comprises a reaction kettle used for carrying out water bath heating on a three-neck bottle, and industrial benzene-free carbon disulfide is placed in the three-neck bottle; the three-neck bottle is connected with the first-stage rectification device; the first-stage rectifying device comprises a first-stage rectifying tower and a first-stage condenser, and the first-stage rectifying tower is connected with the three-neck bottle and is used for carrying out primary distillation on the raw materials; the first-stage condenser is connected with the output end of the first-stage rectifying tower; the second-stage rectification device is used for re-distilling the raw materials, and the second-stage rectification device is the same as the first-stage rectification device in structure and comprises a second-stage rectification tower and a second-stage condenser. The primary rectification device and the secondary rectification device are arranged to rectify the industrial benzene-free carbon disulfide in a grading manner, so that the benzene-free carbon disulfide with different purities in each stage can be obtained, and finally, the benzene-free carbon disulfide can be completely output, so that the purity of the benzene-free carbon disulfide is improved.

The present invention belongs to the technical field of petroleum processing and petrochemical industry, and relates to a method for removing CS2 and sulfur-containing compounds from liquid light hydrocarbon streams by reaction and distillation. This method does not change the desulfurization reaction in the traditional process, enabling the desulfurized product to enter the distillation column and obtain qualified isoprene at the top of the column. The unique feature of this method is the reversible transformation of the sulfur-containing amine salts formed during the reaction. The sulfur-containing amine salts are separated using a filter, and under high-temperature carrier gas, the sulfur-containing amine salts undergo thermal decomposition to form organic amine and CS2. The regenerated organic amine can be recycled, and the regenerated CS2 is stored in low-temperature cold water. This method can significantly reduce the dosage of desulfurizing agent, solve the sewage problem caused by aqueous phase separation and the problem of pipeline blockage by salts, and make the entire process more environmentally friendly.

Systems and methods for converting methane and hydrogen sulfide to hydrogen and poly carbon subsulfide. An exemplary system includes a non-thermal plasma reactor, a first feed stream including methane, a second feed stream including hydrogen sulfide, a catalyst support material selected from boron nitride, carbon black, graphene, aluminum oxide (Al2O3) or titanium dioxide TiO2, and a catalyst selected from Ru, Rh, Ir, Pd, Pt, Re, Mo, Ni, Co, W and combinations thereof. An exemplary method includes providing a first feed stream including methane to a reactor, providing a second feed stream including hydrogen sulfide to the reactor, and reacting the first feed stream and the second feed stream in a non-thermal plasma in the presence of a catalyst to produce a product stream including hydrogen and poly carbon subsulfide.