82 results about "Sulfur containing" patented technology

The application relates to the technical field of waste gas treatment, and discloses an activated carbon material, a preparation method and application thereof, and a method for removing and recycling sulfur dioxide in sulfur-containing waste gas. The CO2-TPD test spectrum of the activated carbon material simultaneously contains weak alkaline centers in the range of 80-120 DEG C and medium-strong alkaline centers in the range of 180-260 DEG C, the maximum peak height in the range of 180-260 DEG C is greater than 2000 muV; the activated carbon material has a pore volume ratio of macropores (greater than 100 nm) of more than 70%, an ash content of less than 2%, a high desulfurization rate, good regeneration performance, a SO2 removal rate of more than 99.5%, and an activity stability of more than 99% in 1000 hours.

This utility model relates to a composite purification system for removing sulfur, water, and carbon dioxide from associated gas in oil fields. The system includes an associated gas inlet pipe and is characterized by: a primary absorption tower, a secondary absorption tower, a compressor, a nitrogen source, and a heater. Both the primary and secondary absorption towers are equipped with 13X molecular sieves and 4A molecular sieves. The compressor is installed on the associated gas inlet pipe. The two ends of the primary inlet pipe are connected to the top of the primary absorption tower and the associated gas inlet pipe, respectively. A primary valve is installed on the primary inlet pipe. One end of a primary vent pipe is connected to the primary inlet pipe and is located near the top of the primary absorption tower. A secondary valve is installed on the primary vent pipe. A primary outlet pipe is connected to the bottom of the primary absorption tower. A sixth valve is installed on the primary outlet pipe. The nitrogen inlet pipe is connected to the nitrogen source, and the heater is installed on the nitrogen inlet pipe and located near the nitrogen source. This utility model has a simple structure, low cost, and is easy to move.

This invention discloses a medium-high carbon sulfur-containing hot-rolled steel plate for precision stamping and its manufacturing method, which mainly solves the technical problems of low elongation and poor fine stamping performance of existing medium-high carbon hot-rolled steel plates. The technical solution is a medium-high carbon sulfur-containing hot-rolled steel plate for precision stamping, with the following chemical composition by weight percentage: C: 0.18%-0.28%, Si: 0.15%-0.40%, Mn: 1.20%-1.50%, Cr: 1.00%-1.40%, S: 0.025%-0.035%, P≤0.018%, Ti: 0.015%-0.040%, Al: 0.001%-0.010%, O: 0.0015%-0.0030%, N≤0.0080%, Ca: 0.0008%-0.0020%, and satisfying Ca / S = 0.03-0.06, Ti / O ≥ 10, with the balance being Fe and unavoidable impurities.

The present application belongs to the technical field of oil and gas field produced water treatment, and particularly relates to an ammonia nitrogen treatment system and method for oil field sulfur-containing produced water. The method comprises the following steps: sending the oil field sulfur-containing produced water into a first buffer pool, reducing sulfides through two-stage aeration of a cyclone aerator and an aeration nozzle device, overflowing from the first buffer pool to a second buffer pool when the first buffer pool reaches a water outlet height, and removing ammonia nitrogen by adding an ammonia nitrogen remover through a conventional dosing port of a dosing device. The present application fully utilizes the characteristics of aeration sulfur removal, and through the addition of a targeted chemical agent and the control of key parameters, purifies and softens the oil field sulfur-containing produced water in one step. After treatment, the water quality only needs to be further filtered by two stages of fine filtration, and the outlet water quality directly meets the steam boiler feed water requirements.

The present application relates to the technical field of ore recovery, and particularly relates to a comprehensive recovery and utilization method of complex associated magnetite, which comprises a pretreatment stage, a sulfur tailing reinforced recovery and a desulfurization flotation operation. The magnetic roller separation device designed by the gradient magnetic field realizes effective separation of magnetic minerals and sulfur-containing minerals, and the two-stage wet magnetic separation equipment is used to improve the recovery rate of magnetic minerals, and then the sulfur content of the iron concentrate is reduced by optimizing the reagent adding mode and the flotation conditions. The present application can significantly reduce resource waste, reduce energy consumption and environmental pollution, and provides a green and efficient comprehensive recovery and utilization solution for complex associated magnetite.

This disclosure relates to a desulfurization method for sulfur-containing wastewater, comprising the following steps: the sulfur-containing wastewater is introduced into an anaerobic biological unit for sulfate reduction treatment to obtain reduced wastewater; the reduced wastewater and oxygen-containing gas are introduced into a hydrogen sulfide stripping unit for stripping treatment to obtain hydrogen sulfide gas products and stripped water; the stripped water is introduced into a water quality stabilization unit for activated carbon adsorption treatment to obtain purified water; the hydrogen sulfide gas products and air are introduced into a biological oxidation unit for hydrogen sulfide oxidation treatment to obtain elemental sulfur and tail gas; the tail gas obtained from the biological oxidation unit is introduced into a tail gas treatment unit, where it undergoes sequential water vapor removal treatment, activated carbon adsorption treatment, and photocatalytic oxidation treatment to obtain purified tail gas. This disclosure enables efficient treatment of high-concentration sulfate wastewater and the recovery of elemental sulfur.

This invention relates to a modified zero-valent iron / biochar composite material with oxygen-rich vacancies and its application. The modified zero-valent iron / biochar composite material comprises a biochar carrier and zero-valent iron loaded on the biochar carrier. The surface of the zero-valent iron is coated with sulfur-containing iron compounds and / or boron-containing iron compounds, and the surface of the zero-valent iron contains abundant oxygen vacancies. The modified zero-valent iron / biochar composite material is specifically prepared by the following method: dispersing the biochar carrier and zero-valent iron in oxygen-free water and grinding; adding a sulfur source or boron source to the ground suspension, stirring and grinding thoroughly, and drying; subsequently soaking in a reducing solution, followed by high-temperature calcination and cooling to obtain the modified zero-valent iron / biochar composite material. Compared with the prior art, the modified zero-valent iron / biochar composite material prepared by this invention can be used synergistically with compound oxidants to achieve effective remediation of organically contaminated soil.

This invention discloses an apparatus and process for removing sulfur dioxide from flue gas using siderite slurry, relating to the field of environmental protection technology. The apparatus comprises six major components: desulfurization, slurry circulation, slurry replenishment, oxidation, defoaming emission, and spent slurry treatment. The components are interconnected by pipelines. The process includes siderite pretreatment slurry preparation, slurry replenishment, flue gas desulfurization, sulfite oxidation, flue gas defoaming emission, and spent slurry treatment. Siderite is crushed and ground into a slurry with a specific particle size and solids content, which is then contacted countercurrently with sulfur-containing flue gas. Utilizing ferric carbonate, magnesium carbonate, and calcium carbonate in the slurry as desulfurizing agents, combined with the oxidation effect of air and ferric ions, sulfur dioxide is converted into ferric sulfate and calcium sulfate, achieving desulfurization. This invention has high desulfurization efficiency, with the sulfur dioxide content in the purified flue gas below 50 mg / Nm³. 3 It makes full use of low-grade siderite resources, and the desulfurization by-products can be utilized as resources. The process is simple and has no secondary pollution, resulting in significant economic and environmental benefits.

The invention provides a high-sulfur natural gas metering and pressure guiding device, method and system, and the device is characterized in that pressure measurement equipment is communicated with a natural gas pipe wall through a first pipeline, the pressure measurement equipment is communicated with differential pressure measurement equipment through a second pipeline, and the differential pressure measurement equipment is connected with the natural gas pipe wall through a third pipeline; the differential pressure type flowmeter is installed in the natural gas pipeline, the second pipeline and the third pipeline are communicated with the pressure liquid accumulation tank through branch pipes respectively, and the liquid inlet ends of the differential pressure liquid accumulation tank, the pressure liquid accumulation tank and the differential pressure liquid accumulation tank are all provided with switch valves electrically connected with the pressure measuring device and the differential pressure measuring device. According to the invention, the state of the gas flow of the natural gas pipeline is firstly judged by the differential pressure type flowmeter, and then pressure and differential pressure detection is carried out on the natural gas in a steady state by the pressure measurement equipment and the differential pressure measurement equipment, so that the accuracy of the detection data is guaranteed, and the corresponding switch valves are opened in time; therefore, the maintenance workload of high-sulfur-content field equipment is reduced.

The utility model discloses a kind of sulphur nickel cake rolling forming tool, belong to nickel cake processing technical field, including bottom frame, bracket is fixedly installed in bottom frame bottom end, support frame is fixedly installed in bottom frame top end, second support rod is rotatably installed in bottom frame, lower roll is fixedly sleeved in second support rod side wall, lower roll is located below support frame, first support rod is rotatably installed in support frame, upper roll is fixedly sleezed in first support rod side wall, two groups of conveying roller that are symmetrically distributed are rotatably installed in bottom frame, two groups of conveying roller are located lower roll two sides, and same group conveying roller is located in bottom frame and is distributed in straight line array.This utility model is through the setting of pusher assembly, it plays the role of pushing product to enter between upper roll and lower roll, need not manual feeding, it is favorable to improve the processing effect of product, and the width of product can be scanned by scanner, it is convenient to correct the position of correction group adjustment, it is favorable to keep stability when product is conveyed.

This invention relates to an integrated desulfurization and dust removal device for sulfur-containing flue gas, belonging to the field of dust removal and desulfurization technology. Considering the issue of uneven flue gas flow as it passes through the adsorption spheres in the granular desulfurization chamber, a deflection base with a ball seat is creatively designed. An adjusting rope assembly, consisting of several ropes, is installed within the granular desulfurization chamber. The ropes' movement is adapted to the deflection base. When flue gas flow is low and the desulfurization slurry consumption on the adsorption sphere surface is low, the deflection base deflects accordingly. The downward deflection tightens the adjusting ropes, creating a flue within the adsorption sphere that guides the flue gas smoothly. As a result, the sulfur-containing flue gas passes through this flue, increasing the consumption of desulfurization slurry. Ultimately, this causes the deflection base to deflect in the opposite direction, thus actively and automatically adjusting the adsorption spheres within the granular desulfurization chamber for uniform desulfurization.

This invention belongs to the field of environmental microbiology and soil remediation technology, specifically relating to a composite microbial agent, its preparation method, and its application in the remediation of soils contaminated with heavy metals and organic matter. The composite microbial agent provided by this invention combines sulfur-modified biochar, a composite functional microbial community, and slow-release nutrients in a specific ratio. The sulfur-modified biochar contains sulfur-containing functional groups such as S=O and C-S, enabling specific adsorption and fixation of heavy metals. The composite functional microbial community consists of organic pollutant-degrading bacteria, plant growth-promoting bacteria, and heavy metal-converting bacteria in a specific ratio of viable bacteria, complementing each other to synergistically complete the degradation of organic matter and the conversion of heavy metals. The slow-release nutrient component provides long-term nutritional support. The preparation method of this composite microbial agent is simple and suitable for the remediation of heavy metal-organic matter contaminated soils in industrial, mining, and chemical sites, offering advantages such as high efficiency, long-term effectiveness, low cost, and environmental friendliness.

Methods, systems, and devices for chalcogenide memory device compositions are described. A memory cell may use a chalcogenide material having a composition as described herein as a storage materials, a selector materials, or as a self-selecting storage material. A chalcogenide material as described herein may include a sulfurous component, which may be completely sulfur (S) or may be a combination of sulfur and one or more other elements, such as selenium (Se). In addition to the sulfurous component, the chalcogenide material may further include one or more other elements, such as germanium (Ge), at least one Group-III element, or arsenic (As).

The application discloses a selenium nutrient composition and a simple preparation method thereof, and belongs to the technical field of selenium-containing food processing. The selenium nutrient composition is prepared from ordinary garlic processing by-products and selenium-rich water as raw materials, and high-efficiency selenium enrichment is realized in one step by adopting a supercritical extraction technology, and selenium-rich garlic powder, garlic essential oil and garlic crude extract are simultaneously prepared. The raw materials are easy to obtain, the process is simple, green and environment-friendly, and the utilization rate of garlic resources is greatly improved. By adjusting process parameters such as the amount of selenium-rich water and the extraction time, the selenium content of the selenium-rich garlic powder can be accurately customized to adapt to the individual selenium supplement needs of different groups of people. The extraction process effectively separates sulfur compounds in garlic, significantly reduces the pungent smell of the product, and the product has better palatability. The prepared selenium nutrient composition can be widely applied to various food processing such as tablet candies and solid beverages, and has the advantages of nutrition, practicability and industrialization promotion value.

This invention provides a sheet-like sulfur-containing carbon nitride / tubular copper-doped phosphorus-nitride homo-heterojunction, its preparation method, and its application. The preparation method is as follows: S1. Calcining trithiocyanate to obtain sheet-like sulfur-containing carbon nitride; dissolving copper acetate and melamine in water, then adding concentrated phosphoric acid and stirring until homogeneous, and obtaining a tubular copper-doped phosphorus-nitride precursor using a hydrothermal method; S2. Dispersing the tubular copper-doped phosphorus-nitride precursor and sheet-like sulfur-containing carbon nitride in ethanol or an ethanol-water solution, ultrasonicating, stirring, drying, and then performing a second calcination to obtain the sheet-like sulfur-containing carbon nitride / tubular copper-doped phosphorus-nitride homo-heterojunction. The prepared sheet-like sulfur-containing carbon nitride / tubular copper-doped phosphorus-nitride homo-heterojunction is sensitive to visible light response, has high photocatalytic hydrogen production activity, and the preparation method is simple, easy to operate, and has good reproducibility.

The application relates to a sulfur-containing marine natural product Sunshinamide analogue, which has novel antitumor activity. After structural optimization on the basis of the Sunshinamide compound, a series of Sunshinamide analogues are obtained, which exhibit better structure-activity relationship and better anticancer activity. Meanwhile, the application also discloses a preparation method of the Sunshinamide analogue, and the method can effectively improve the yield of the product.

This invention belongs to the field of industrial solid waste resource utilization and inorganic material preparation technology, specifically relating to a coupled method and system for preparing jade core stone from gypsum waste residue and producing sulfuric acid as a byproduct. The coupled method includes: drying the gypsum waste residue in a first drying device to obtain semi-dry gypsum waste residue, then drying the semi-dry gypsum waste residue in a second drying device to obtain anhydrous gypsum raw material; mixing and grinding the anhydrous gypsum with pre-set auxiliary materials, and then processing it through a melting furnace roasting device, a calendering device, and a segmented crystallization annealing device to prepare jade core stone products, wherein the waste heat from the melting furnace roasting device, the calendering device, and the segmented crystallization annealing device is all returned to the second drying device; during the calcination of the anhydrous gypsum mixed and ground with pre-set auxiliary materials in the melting furnace roasting device, the sulfur-containing flue gas generated during the calcination process is collected and sequentially treated through a waste heat recovery device, a purification drying device, and a two-transfer two-absorption device to obtain industrial-grade sulfuric acid.

The application discloses a low-energy-consumption and low-pollution-emission sulfur-containing gas field water treatment coupling system, which comprises a static mixer, a PH adjusting tank, a stripping fan, a gas field water stripping tower and a hydrogen sulfide treatment unit; the upstream sulfur-containing oil and gas field produced water enters the static mixer, is premixed with hydrochloric acid, and then enters the PH adjusting tank to be stirred, so that PH value adjustment is completed; the oil and gas field produced water after PH value adjustment is pumped to the upper portion of the gas field water stripping tower through a stripping tower water inlet pump, air is sent to the gas field water stripping tower after being pressurized by the stripping fan, the sulfur-containing gas field water and the air are countercurrently contacted on the tower filler, hydrogen sulfide in the sulfur-containing gas field water is stripped and replaced by the air, and the desulfurized gas field water is sent to a boundary area; the air containing hydrogen sulfide discharged from the top of the gas field water stripping tower enters the downstream hydrogen sulfide treatment unit, is subjected to resource treatment, and corresponding products are generated. Through the system, the pollutant emission is greatly reduced, and the treatment cost of the gas field water desulfurization is reduced.

The utility model relates to a kind of single sulfur condensing device in material preparation technical field, including the sulfur vapor receiving component, droplet formation component, droplet collection solidification component and sulfur vapor cooling component connected in sequence, the temperature of the sulfur vapor receiving component is controllable, and tail gas outlet is equipped on the sulfur vapor cooling component.The utility model is with the concept of droplet condensing vapor state single sulfur, makes sulfur vapor expelled from the preparation body of sulfur-containing material in single sulfur condensing device first liquefaction then solidification collection, effectively avoids the condensation blockage of sulfur vapor in tail gas outlet part.

The application discloses a testing device and method for element sulfur solubility in high-sulfur gas reservoir development process, and the testing device comprises a fluid injection system, a reservoir simulation system, a sulfur solubility metering system and a data tracking and processing system; the fluid injection system is connected with the reservoir simulation system; the reservoir simulation system is connected with the sulfur solubility metering system; the data tracking and processing system is connected with the sulfur solubility metering system; the fluid injection system is used for injecting a sulfur-containing gas sample into the reservoir simulation system and the sulfur solubility metering system; the reservoir simulation system is used for simulating the flow of the sulfur-containing gas sample in a reservoir and a complex interface physicochemical action process; the sulfur solubility metering system is used for metering the sulfur solubility in the sulfur-containing gas sample; and the data tracking and processing system is used for processing data. The testing device in the application comprises two sulfur solubility testing units, so that the testing precision is effectively improved, and the measurement loss and safety risk caused by the flow of the sulfur-containing gas sample in pipelines and valves are reduced.

The present application relates to the technical field of resource utilization, and discloses a method for preparing alkali-activated concrete by using modified sulfur-containing copper tailings, which comprises the following steps: (1) pre-wetting the sulfur-containing copper tailings according to a water-to-sulfur-containing copper tailing mass ratio of 1:(4-15), and performing accelerated oxidation treatment to obtain oxidized sulfur-containing copper tailings; (2) mixing the oxidized sulfur-containing copper tailings with a slaked lime solution according to a mass ratio of 1g:(5-60ml), performing ultrasonic treatment for 1-3 hours, performing accelerated carbonization treatment after centrifugation, and drying to obtain carbonized sulfur-containing copper tailings; (3) performing ball milling on the carbonized sulfur-containing copper tailings to a size of less than 100 mesh to obtain modified sulfur-containing copper tailings; and (4) mixing raw materials according to mass parts, wherein the raw materials comprise the following components: 240-600 parts of slag, 50-100 parts of fly ash, 100-260 parts of modified sulfur-containing copper tailings, 100-300 parts of an activator, 1000-1500 parts of sand, 1000-1500 parts of stone, 10-60 parts of fiber, and 20-50 parts of water reducing agent. The present application modifies the sulfur-containing copper tailings, maximally utilizes the material properties of the sulfur-containing copper tailings, and improves the utilization rate of the sulfur-containing copper tailings.

A method for producing or processing a protein medium of plant, dairy, animal, or microbial origin, characterized in that, during one or more phases of the production or processing method, the state of the sulfur-containing thiol groups in the medium is controlled or modified by injecting a chosen gas or gas mixture, the reducing or oxidizing nature of which produces a specific effect on said groups. Figure from the abstract: Fig. 1

This invention belongs to the field of mineral processing technology. Specifically, it discloses a graded magnetic separation process for sulfur-containing magnetite. By classifying the ore and dynamically adjusting the magnetic field strength according to the characteristics of different particle sizes, the orientation of iron and sulfur minerals is precisely controlled, achieving optimized adjustment of element orientation. This promotes efficient separation of sulfur and magnetite, improves the grade of iron concentrate, reduces sulfur content, and simultaneously reduces iron mineral loss, thereby increasing the resource utilization rate of both iron and sulfur. The process design of this invention is scientifically sound, with controllable operating costs, high resource utilization, and significant environmental benefits, providing a practical solution for the efficient and clean utilization of sulfur-containing magnetite.

A process for removing sulfur from a sulfur-containing solid carbon-based material includes adding a sulfur-containing solid carbon-based material to an aqueous electrolyte solution comprising an effective amount of an electrolyte in an electrochemical cell, and subjecting the aqueous electrolyte solution to an effective voltage and current to at least partially oxidize at least a portion of sulfur in the sulfur-containing solid carbon-based material, thereby generating oxidized sulfur and a reduced sulfur-containing solid carbon-based material. The reduced sulfur-containing solid carbon-based material has a lower sulfur content by wt. % than the sulfur-containing solid carbon-based material.

This invention provides a sulfur recovery process, a sulfur production device, and a desulfurization device. The sulfur recovery process includes: sulfur production from acidic gas via high-temperature thermal reaction and single-stage Claus sulfur production to obtain sulfur production tail gas; the sulfur production tail gas undergoes a first reaction with a second oxygen-containing gas in an incinerator, oxidizing all sulfur-containing components in the tail gas to sulfur dioxide, obtaining primary process gas; the primary process gas enters a reactor and undergoes a second reaction with a desulfurizing agent, adsorbing the sulfur dioxide in the primary process gas and converting it into sulfate, obtaining secondary process gas and a desulfurizing agent to be regenerated; at least a portion of the desulfurizing agent to be regenerated enters a regenerator to obtain regenerated desulfurizing agent; the regenerated desulfurizing agent is returned to the reactor to participate in the second reaction; the secondary process gas is treated by heat exchange and washing to obtain purified tail gas. This invention has advantages such as a short process flow, low energy consumption, simple operation, low investment, small footprint, high sulfur recovery rate, and near-zero sulfur dioxide emissions from the purified tail gas.

The present application relates to the oil field chemistry and surfactant technical field, especially a kind of for high sulfur gas field sulfur particle anti-agglomerant and preparation method.The elemental sulfur anti-agglomerant provided in the present application includes the following mass fraction components: potassium stearate 2~5 parts, sodium lignosulfonate 3~9 parts, sodium p-toluenesulfonate 4~8 parts, inorganic salt adjuvant 11~23 parts and solvent 60~75 parts.The process flow of the elemental sulfur anti-agglomerant prepared in the present application is simple, and the economic cost is low, by adjusting the synergism and compatibility between surfactants, improve its dispersed sulfur particle performance, applicable to sulfur deposition prevention and control means in high sulfur gas field.