478 results about "Carbon bisulfide" patented technology

The present invention discloses one kind of chelating agent capable of treating several kinds of metal ion simultaneously. The chelating agent is synthesized with polyamine or polyethylene imine as basic skeleton and carbon disulfide in alkaline condition, where, polyamine or polyethylene imine and carbon disulfide have weight ratio of 1 to 0.6-2.0. The chelating agent of the present invention can form chelate precipitate simultaneously with several kinds of metal ion, and is especially suitable for use in purifying waste water, chemical intermediate and chemicals for printed circuit board containing metal ions.

The invention discloses a method for comprehensively treating wastewater and waste gas in the viscose fiber production as well as a device thereof, aiming at solving the difficult problem of waste gas and wastewater treatment in the viscose fiber production. The method comprises the steps of: putting the waste lye collected in the viscose fiber production into an absorption tank; inputting the process waste gas containing sulfureted hydrogen and carbon bisulfide into the absorption tank, and colleting the absorbed neutralizer for standby; and putting the neutralizer into the wastewater containing zinc ions for having the reaction with the zinc ions, and removing the precipitate after reaction products are deposited. The device comprises the absorption tank, a collecting tank, a neutralization pond and a sedimentation tank. The method and device comprehensively consider the problems of spent soda, waste gas and zinc-containing wastewater treatment in the viscose fiber production, thereby reaching the comprehensive utilization of resources, also reducing the waste discharge, and solving the environmental protection problem that restricts the industry development over a long period of time in the viscose production process.

The invention disclosed a synthetic method of the dithiocarbamic acid diethylene ethyl polymer and deals with the composing method of the dithiocarbamic acid polymer. The invention is the single stage process; the water, the sodium hydroxide, the diethylene tren, the carbon bisulfide and 1,2-dichloethane is mixed in turn to the polyreaction, so the adsorbent having the good ability of adsorbing the metallic ion. The invention has some merits of the easy means, the easy operation, the operator saving and the time saving, the water and organic solvent economy, the low cost of the producing, the wild acting condition, the safe produce, the energy saving, easy industrial production, the benefit of extending and applying. The production of the invention can be used for fathering the sullage containing the heavy-metal ion, so it can be applied to some trades such as the plate, the electron, the metallurgy, the petroleum processing and the pulp producing and is favourable to the environmental protection.

The invention provides a method for preparing a novel heavy metal ion remover and an application thereof, and relates to a method for preparing a raw material of the heavy metal ion remover, a process for synthesizing the heavy metal ion remover and an application thereof. The invention is characterized in that the method comprises the following steps that: methenamine and epoxy chloropropane react with carbon bisulfide after the methenamine and the epoxy chloropropane are subject to the cross linking reaction, thereby obtaining a quaternary ammonium salt xanthate chelating agent-the novel heavy metal ion remover. The prepared novel heavy metal ion remover can be used for treating wastewater containing heavy metal ions, and the dosage and the adding process of the novel heavy metal ion remover can be controlled through detecting changes of an oxidation-reduction reaction electrode potential (ORP), thereby achieving the aim of automatically treating the wastewater containing the heavy metal ions with high efficiency.

The invention relates to a device for recycling waste gas generated by viscose through an alkali cleaning-absorbing condensation method, which relates to the equipment for recycling waste gas generated by industries. The device for recycling waste gas generated by viscose through an alkali cleaning-absorbing condensation method has relatively good processing effects and can recycle useful resources in the waste gas with high efficiency. The device is equipped with a waste gas filter, an alkaline tower, a solution transfer pump, a storing tank of sodium hydrosulfide, an air compressor, a washer, a recycle pump, an adsorption tank, an air heater, a heater, a storing tank of carbon bisulfide, a gear transfer pump, a flowmeter, a solution separator, a magnetic levitation ball liquid level switch, a condenser, a water pump, a cooling tower, a draft fan, a vacuum pump, a concentration analyzer of H2S and CS2, an adsorption tank, a cooler and a pneumatic ball valve. Sulfureted hydrogen gas in the waste gas is transformed into sodium hydrosulfide liquid and carbon bisulfide gas in the waste gas is transformed into carbon bisulfide liquid through washing, absorbing, condensing and separating. The carbon bisulfide liquid is employed as raw materials and is directly sent back to the production of the viscose.

The invention discloses an oil solubility compound-type suspended bed hydrocracking catalyst, wherein the catalyst is prepared by the following steps: 1) enabling compounds of metal elements in the VIB family, the VIIB family or the VIII family in a periodic table of elements as metal sources with alkali metal sulfide or alkali metal hydrosulfide according to the mole ratio of (0.5 to 1)-(2 to 1), thereby obtaining a metal element compound at a reduction state; 2) adding the metal element compound at the reduction state and amine substances into a reaction medium according to the mole ratio of (1:0.6)-(1 to 2), and meanwhile dropwise adding carbon disulfide with the corresponding quantity into the reaction medium according to the mole ratio of (1 to 1)-(2 to1) with the metal element compound at the reduction state, warming to react at the reaction temperature of 30-110 DEG C for 2-10 hours; 3) filtering and washing the product obtained by the step 2) so as to obtain the oil solubility compound-type suspended bed hydrocracking catalyst. The catalyst prepared by the invention can inhibit the coke yield, and improve the light oil yield.

In accordance with various embodiments, there are nanostructured materials including WS₂ nanostructures and composites of WS₂ nanostructures and other materials and methods for synthesizing nanostructured materials. The method can include providing a plurality of precursor materials, wherein each of the plurality of precursor materials can include a tungsten reactant. The method can also include flowing, for a reaction time, a substantially continuous stream of carbon disulfide (CS₂) vapor in a carrier gas over the plurality of precursor materials at a temperature in the range of about 700° C. to about 1000 C, wherein the reaction time is sufficient to permit the tungsten reactant to react with carbon disulfide to form a plurality of tungsten disulfide (WS₂) nanostructures.

The invention discloses a copper sulfide ore flotation collector as well as a preparation method and application thereof. The collector is alkoxy carbonyl alkyl dithiocarbamate and has a structural formula as shown in the specification, wherein R1 is carbon chain 1-4 alkyl and R2 is carbon chain 2-4 alkyl. The preparation method comprises the following steps: performing nucleophilic substitution reaction on alkylamine, sodium hydroxide and carbon bisulfide to obtain sodium dithiocarbamate; reacting the sodium dithiocarbamate and alkyl chloroformate to obtain a target collector alkoxy carbonyl alkyl dithiocarbamate. The application refers to application of the copper sulfide ore flotation collector in performing flotation on copper sulfide ore and recycling valuable metal minerals in the copper sulfide ore. The collector is capable of realizing effective separation of the copper sulfide ore and pyrite under an ore pulp environment with the pH value of 6-10, reducing the lime consumption, and further effectively recycling useful metals such as gold, silver and molybdenum. Compared with the existing collector, the collector has the advantages of good selectivity and high useful metal recovery rate.

The invention discloses a preparation method of a modified bio-charcoal based catalyst, which can remove carbonyl sulfide, carbon disulfide, and hydrogen cyanide at the same time. The bio-charcoal is taken as the carrier, a series of modifications is carried out to prepare the catalyst, the catalyst is applied to catalytic hydrolysis so as to simultaneously remove COS, CS2, and HCN; the work temperature of the catalyst is not higher than 100 DEG C, the removal rates of COS and CS2 are not less than 90%, the removal rate of HCN is not less than 70%; and the bio-charcoal based catalyst is prepared by the following steps: subjecting waste biomass to carbonization and activation in sequence so as to obtain the bio-charcoal carrier, then boiling the bio-charcoal carrier in a KOH solution, adding the bio-charcoal carrier in a metal salt solution to carry out ultrasonic impregnation, then burning the bio-charcoal carrier at a certain temperature; adding the burned bio-charcoal carrier into an alkaline solution to carry out ultrasonic impregnation, and finally drying to obtain the bio-charcoal based catalyst. The technology is concise, the operation is convenient, the operation is continuous, COS, CS2 and HCN in flue gas are removed and converted into valuable resources, and no secondary pollution is generated.

This invention discloses a medicine of anti-tumor and anti-plant virus effect---- cyanoacrylate category derivative and its preparing method and biological activity. The following general formula denotes the compound and its preparing method. The definition of R1, R2, R3 in the formula is in instruction book. Materials are carbon bisulfide, cyan acetic ester, dimethyl sulfate, aromatic amine, and sodium cyanide is catalyst, cyanoacrylate category derivative is synthesized by three steps. There is proliferation inhibitory effect of compound b, k to PC3 prostate cancer cell gene stock, and proliferation inhibitory effect of compound i, j to NIN3T3 cell ERK albumen phosphorylation, and good anti-cancer activity is revealed. There is inhibitory activity of compound b, n to tobacco mosaic, and certain anti-plant virus activity is revealed.

The invention discloses a high molecular heavy metal chelating flocculant and a preparation method thereof. The high molecular heavy metal chelating flocculant is prepared by the following steps of: quaternizing diallyl methylamine and epoxy chloropropane in an organic solvent, and grafting polyethylene polyamine onto molecules by performing epoxy group ring opening with polyethylene polyamine; decolorizing with active carbon, and evaporating and concentrating to obtain a diallyl quaternary ammonium salt monomer solution; polymerizing through a free radical aqueous solution to synthesize a diallyl quaternary ammonium salt polymer; and reacting with carbon bisulfide and sodium hydroxide. The high molecular heavy metal chelating flocculant is characterized in that: each structural unit of ahigh molecular chain is provided with a positive charge and a plurality of strong chelation groups -CSS- with negative charges, so that the defect of non-uniform positive charge distribution of the conventional ampholytic chelating flocculant is avoided, neutralization of negative charges produced in a floc forming process is facilitated, a floc structure is improved, the formation and growth of floc are promoted, the heavy metal ion chelating capability and flocculating settling performance are enhanced, and the size of sediments is reduced.

The invention relates to a method for preparing water-retention fertilizer from aquatic plants, comprising the followings steps: using aquatic plants of water hyacinth, Potamogeton crispus L, and alternanthera philoxeroides as raw materials, using haloacetic acid and potassium salt thereof or carbon disulfide in alkaline solution containing potassium ion as chemical modifier, and using FeCl3 or AlCl3 as cross-linking agent so as to obtain aquatic plant fiber with water absorption and water retention property. In the invention, a large amount of aquatic plant fiber generated by ecosystem restoration of water and pollution prevention engineering is used so as to ensure long time operation of ecosystem restoration engineering. The water-retention fertilizer prepared by the invention can regulate water in soil, supply potassium fertilizer and nitrogen fertilizer in soil after applying since containing the potassium ion, ammonia water, and urea. The natural aquatic plant fiber is used as basis material to prepare water-retention fertilizer which can be completely biodegraded, can improve soil structure and can prevent hardening of tilled land.

The invention relates to a C- and S- containing compound producing method and device, concretely a CS2 producing process and device, adding carbon- containing solid matter in a fluidized bed heating oven by spiral feeder, burning out a part of carbon-containing solid matter after air fluidization, and simultaneously heating the other part of carbon- containing solid matter; putting the heated carbon-containing solid matter into a fluidized bed reactor where the fluidized carbon-containing solid matter reacts with sulfur steam to produce CS2-containing course gas; and the unreacted carbon-containing solid matter is transported through vertical pipe into the fluidized bed heating oven. And it increases gas-solid contact surface, and implements continous production; increases actual utilization of raw materials; the whoel device has a simple structure and a wide range of applicable raw mateirals.

The invention belongs to the technical field of harmless treatment of municipal solid waste incineration fly ash, and solves the solidification problem of heavy metal ions in fly ash. A method for preparing a novel synthetic heavy metal chelating agent comprises the following steps: mixing a polyethyleneimine water solution with a sodium hydroxide water solution, and dropwise adding carbon disulfide to obtain an orange red jelly-like solid, namely the heavy metal chelating agent. The method is simple in process, low in cost, easy and convenient to operate, wide in application range, low in environmental pollution and suitable for industrialized production.

The invention relates to a method to produce filature-industry material. It provides a process that use chrysalides albumen filature liquid and fibrin xanthate ester to spin excellent albumen soy fiber by the mode of injection before spinning and the principle of static admixture. It contains plasm, chrysalides albumen, vitriol, NaOH, carbon bisulfide, formaldehyde glutaraldehyde and propylene acyl-amine. The production is soft and its color is golden. In short, it remains favorable weaving ability.

The invention discloses a preparation method of a nanopore cellular membrane. The method comprises the following steps: preparing a 6mg/mL to 14mg/mL polymer solution by selecting a proper solvent; coating the polymer solution on the surface of a substrate and standing in a normal-temperature atmospheric environment with the relative humidity of 60% to 90% for 30 seconds to 4 minutes; and obtaining the cellular membrane with a nanopore structure after the complete volatilization of the solvent, wherein the pore diameter of the cellular membrane ranges from 10nm to 100nm; the solvent is selected from carbon disulfide, chloroform, dichloromethane or toluene; and the substrate is selected from a silicon slice, glass, a gold slice, a silver slice, a polyester film or a polyimide film. According to the method disclosed by the invention, the cellular membrane with the surface-layer nanopore structure is prepared via a spirogram method by only adopting the double-end based functionalized linear polystyrene. As a result, the smallest pore is prepared up to now via the spirogram method.

The invention discloses a N,N-dialkyl-S-hydroxyalkyl-dithiocarbamate collecting agent and a preparation method and an application thereof. The collecting agent is N,N-dialkyl-S-hydroxyalkyl-dithiocarbamate which is synthesized by a one-pot process by taking carbon disulfide and water as a solvent, and diamine, carbon disulfide, sodium hydroxide and haloalkyl alcohol as raw materials. The preparation method is simple to operate and mild in reaction condition. The floating collecting agent has a good collecting property, and the action of the collecting agent with metal ions on the surfaces of minerals can be improved well. The prepared collecting agent has a relatively good collecting ability and selectivity to sulphide ores such as copper sulphide ores, copper-molybdenum cores and lead zinc ores, and shows a relatively good floating index.

The invention relates to the technical field of agriculture, industry and pharmacy and provides a 2-mercapto benzothiazole derivative synthetic method. According to the 2-mercapto benzothiazole derivative synthetic method, 2-mercapto benzothiazole derivatives are synthesized by take 2-halogen phenylamine, carbon disulfide and inorganic metal sulfide as the raw materials and through catalysis of copper salt. The method comprises dissolving the 2-halogen phenylamine, the inorganic metal sulfide and copper salt catalyst inside an appropriate solvent, adding the carbon disulfide inside the mixture for recreation under 50-110 DEG C for a certain time and performing purification treatment to obtain the 2-mercapto benzothiazole derivatives. The 2-mercapto benzothiazole derivative synthetic method with the copper-catalyzed carbon disulfide is rapid and efficiency, by taking the nontoxic, cheap and easily-obtained copper salt as the catalyst, omits ligand for recreations, and has the advantages of being high in yield rate, mild in conditions, low in the amount of by-products and the like.

The invention belongs to the technical field of fine chemistry, and relates to a method for purifying a vulcanization accelerator 2-mercaptobenzothiazole (M). In the method, organic arenes, alcohols, carbon disulfide or phenylamine is used as a solvent; and a continuous solvent extraction and solvent distillation recycling device is adopted at an extraction temperature of 20-180 DEG C and an extraction pressure of 0-0.8 MPa to remove tar and byproducts in accelerant M, and the solvent is continuously recycled at the same time. By adopting the method provided by the invention, the consumption of the solvent is reduced, the purifying yield of the accelerant M is improved, and the production of technical waste water is avoided.

The invention provides a preparation method of a xanthated loess adsorbent. The method comprises the following steps of: dispersing loess into a sodium hydrate solution to form a suspension; dropwise adding carbon bisulfide into a system, and stirring for reacting to generate a xanthated loess sodium salt; adding a soluble sodium salt into the system, and stirring for reacting to generate a xanthated loess magnesium salt; and washing, drying in vacuum, and grinding into powder to obtain the xanthated loess adsorbent. As proved by a large quantity of experiments, the xanthated loess adsorbent disclosed by the invention has a looser surface structure than that of natural loess, has a large specific surface area, has very high adsorption performance on heavy metal copper ions and malachite green in waste water, has a high adsorption capability and a large adsorption volume when applied to treatment of waste water containing heavy metal copper ions and a malachite green dye, and can be used for treating waste water containing the heavy metal copper ions and the malachite green dye.

The invention provides a cell preservation solution and application thereof. The cell preservation solution is prepared from the following components in parts by weight: 60 to 1000 parts of pH buffer, 10 to 150 parts of osmotic pressure maintenance agent, 4 to 55 parts of anticoagulant, 1 to 30 parts of mucolytic agent, 800 to 5000 parts of fixing agent, 1 to 150 parts of component A, 10 to 30 parts of component B and 10000 to 20000 parts of water, wherein the component A is prepared from sodium azide and lauryl sodium sulfate according to a weight ratio of (1 to 10) to (2 to 110); the component B is carbon disulfide. The cell preservation solution of the invention has a better impurity treatment effect, and reduces the interference factors in cell samples; at the same time, target cells therein can retain the characteristics of structural morphology for a long time, thereby facilitating the medical detection and analysis of the target cells, and the cost is low.

The invention relates to a method for preparing a carbon fibre cloth loaded sulphur composite material, belonging to the technical field of electrode materials for ion batteries. The method disclosed by the invention comprises the following main steps of thermally treating by using cotton woven fibre cloth as the raw material so as to obtain functionalized conductive fibre cloth, and carrying out hydrothermal reaction by taking deionized water/alcohol solvent/sulphur/carbon disulfide as a reaction system so as to obtain a carbon fibre cloth loaded nano sulphur particle composite material. According to a composite positive electrode of carbon fibre cloth loaded sulphur, carbon fibre cloths are connected in a staggered manner so as to form a three-dimensional orderly conductive network; more sulphur can be adsorbed through the supramaximal specific surface area; the carbon fibre cloth loaded sulphur composite material prepared through the simple method can be directly used as a pole piece; the fussy processes of pulping, coating and the like in traditional electrode preparation can be omitted; and a beneficial way is provided for application of the sulphur positive electrode.

The invention discloses a preparation method of viscose fibers for loading multi-wall carbon nanotubes, which is based on a simplified preparation method of viscose fibers and comprises the steps of: adding medical absorbent cotton to a sodium hydroxide water solution for basification; then adding carbon bisulfide for etiolation; finally diluting in a dilute sodium hydroxide water solution for obtaining unloading etiolated cellulose viscose; adding carboxylated carbon nanotubes in any phase of the basification, the etiolation and the dilution for obtaining the etiolated cellulose viscose used for uniformly dispersing the multi-wall carbon nanotubes; and neutralizing and solidifying the viscose by using 20% of sulfuric acid water solution for obtaining the viscose fibers for loading the carbon nanotubes. The viscose fibers prepared by the method have higher mechanical performance.

The invention discloses a preparing method of carbon disulphide, which is characterized by the following: controlling the temperature of natural gas and sulphur at 550-800 deg.c at 0.3-1.0Mpa; reacting to produce carbon disulphide; blending natural gas and liquid sulphur in the heating segment of reacting furnace pipe through static blender.

The invention discloses a preparation method of modified starch for wastewater treatment, and belongs to the field of starch. According to the preparation method, a water treatment agent is provided through modification with the modified starch as a natural high-molecular carbohydrate; the modified starch is obtained by modifying potato starch by utilizing a potassium hydroxide and urea mixed solution, a disodium phosphate oxygen and citric acid buffer solution, a cross linking agent; carbon bisulfide and the like; carbon bisulfide is utilized for acting on the starch, so that precipitation is easy; the modified starch has an efficiency of metal ion displacement, so as to remove copper, chromium, zinc, and lots of heavy metal ions in the industrial wastewater; not only can heavy metals be recovered, but also the modified starch is nontoxic and harmless to environments, and is free of secondary pollution to the environments.