276 results about "Carbon sulfide" patented technology

The invention relates to lead paste of a deep adhesive type specially-cured lead carbon battery. Positive electrode lead paste comprises the following constituents: 600-1,200kg of lead powder, 5-80kg of red lead, 10-60kg of 4BS seed crystal, 0.6-3.6kg of aquadag, 0.3-3.6kg of stannous sulfate, 0-3.0kg of antimonous oxide, 0.6-3.6kg of potassium phosphate, 0.5-1.8kg of fumed silica, 0.8-1.8kg of short fiber and 48-130kg of 1.40g/ml dilute sulphuric acid, and negative electrode lead paste comprises the following constituents: 600-1,000kg of lead powder, 3-12kg of barium sulfate, 1-8kg of humic acid, 0.5-2.5kg of lignin, 0.3-1.8kg of fumed silica, 0.05-1.5kg of sodium carboxymethyl cellulose (CMC), 0.5-2.5kg of PTFE emulsion, 8-10kg of graphite, 1-16kg of acetylene black/carbon black, 2-18kg of active carbon/capacitance carbon/carbon, 0.05-1.8kg of bismuth oxide/ bismuth carbon sulfide bismuth, 0.01-1.2kg of graphene, 0.02-2.0kg of carbon nanofiber tube, 0.8-1.8kg of short fiber and 76-80kg of 1.40g/ml dilute sulphuric acid.

The invention discloses rhodococcus ruber FQ-2 and an application thereof in degradation of acetone and other common industrial organic pollutants. The application method comprises the steps: an inorganic salt culture medium containing acetone and other common industrial pollutants is inoculated with the rhodococcus ruber FQ-2, a degradation reaction is carried out under the conditions of the temperature of 30 DEG C and the rotating speed of 160 r/min, and thus the organic pollutants are degraded; the common organic pollutants comprise acetone, n-hexane, carbon disulfide, chlorobenzene, butylacetate, ethyl acetate or alpha-pinene. The rhodococcus ruber FQ-2 is taken from activated sludge of an aeration tank of a pharmaceutical factory in Zhejiang province, has good degradation effect on VOCs organic pollutants, especially acetone, and can completely convert acetone into harmless substances such as CO2, H2O, cell biomass and the like; at the same time, the bacterial strain also can degrade common industrial pollutants such as carbon disulfide and chlorobenzene in different extent, so the bacterial strain has broad application prospects in biological purification of industrial wastegas and wastewater.

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.

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 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 discloses a process for producing benzene, methylbenzene and xylene from crude benzene. Various impurities, mainly containing thiophene, in the crude benzene are all removed by use of a low-temperature hydrogenation method, wherein all the sulfides (such as thiophene, methylthiophene and carbon disulfide) are converted into H2S and low carbon hydrocarbons, the nitrides are converted into NH3 and arenes or alkanes, the oxides are converted into H2O and arenes or alkanes, and the unsaturated hydrocarbons are saturated by hydrogenation; and next, the impurities are removed by virtue of conventional rectification and extraction rectification. As a result, the benzene, the methylbenzene and the xylene all having good quality can be produced.

Processes for forming carbon disulfide from a gas stream containing hydrogen sulfide. A gaseous stream comprising lower molecular weight alkanes and hydrogen sulfide may be contacted with sufficient bromine at a temperature of from about 250° C. to about 530° C. to convert substantially all of said hydrogen sulfide to carbon disulfide. The gaseous stream may contain from about 0.001 to about 20 mol % hydrogen sulfide. The molar ratio of bromine to hydrogen sulfide may be about 2:1.

The invention discloses a high-molecular organic-inorganic composite chemical for processing incineration fly ash and an application thereof. An organic substance part of the composite chemical is a high-molecular metal ion chelating agent composed of acrylamide, hydroxyl acrylic acid, chloropropylene oxide, an amines and carbon disulfide through polymerization, and an inorganic substance part is mainly composed of composite phosphate. According to the invention, functional groups of polyacrylamide and dithio amino are integrated in the composite chemical, the composite chemical has dual efficacy for chelating and flocculating heavy metal ions, and the capability of chelating metal ions in the fly ash can be obviously increased by compounding with inorganic salt; 18mL of the composite chemical is added in each kilogram of fly ash to reach the treatment requirement of fly ash under a new standard; compared with pure organic chemical, the production cost is greatly reduced, the preparation method is simple, the raw material has the advantages of low cost, and easy acquisition, and the high-molecular organic-inorganic composite chemical is in favor of popularization and application.

The invention relates to a preparation method for a Cu-Co-S-MOF nanosheet, which comprises the following steps: S1, cobalt nitrate hexahydrate is dissolved in deionized water to obtain a solution A, 2-methylimidazole is dissolved in deionized water to obtain a solution B, the solution A and the solution B are mixed, clean foamed nickel is then added for reaction, and foamed nickel with Co-MOF is obtained; S2, copper nitrate hexahydrate and the cobalt nitrate hexahydrate are dissolved in isopropanol, a mixed solution C is obtained after dissolution, and carbon disulfide and pentamethyldiethylenetriamine are added to the mixed solution C, and a mixed solution D is obtained; and S3, the foamed nickel with Co-MOF is added to the mixed solution D and is transferred to a reactor for a hydrothermal reaction, and after the reaction, the Cu-Co-S-MOF nanosheet is obtained. Compared with the prior art, the preparation method is environmentally-friendly, the preparation method is simple, large-scale production is facilitated, the obtained Cu-Co-S-MOF nanosheet can be applied to an electrode material, and excellent electrochemical performance can be obtained.

The invention provides a preparation method for a cobalt sulfide/carbon composite material and a product and an application therefor. The preparation method comprises the following steps of: S1, enabling a soluble cobalt salt to be mixed with carbon disulfide (CS<2>) to obtain a uniform solution, wherein the ratio of the amount of substance of the soluble cobalt salt to carbon disulfide (CS<2>) is 1:1-1.5; S2, moving the solution obtained in the step S1 to a reaction kettle to be subjected to a solvothermal reaction, wherein the conditions of the solvothermal reaction are as follows: the reaction temperature is 180-220 DEG C and the reaction time is 20-24h; and S3, separating the mixture obtained in the step S2, collecting a solid product, and washing and drying the solid product to obtain the cobalt sulfide/carbon composite material. According to the preparation method, carbon disulfide is skillfully taken as the raw material; the carbon disulfide can be used as the solvent, the sulfur source and the carbon source in the solvothermal reaction; the preparation method is simple, easy to operate and low in equipment requirement; and in addition, the cobalt sulfide/carbon composite material has relatively high specific capacitance and cycling stability and low capacitance degradation.

The invention discloses a recycling equipment and method of carbon disulfide in the hydrogen sulfide, which is characterized by the following: injecting hydrogen sulfide with carbon disulfide in the Claus recycling system directly; maintaining inner catalyst active property in the Claus reactor; sending the hydrogen sulfide with carbon disulfide in the adsorbing reactor to proceed adsorb and desorb operations alternately; transmitting the desorbed carbon disulfide in the refining unit to recycle carbon disulfide.

The invention discloses a regeneration method after the deactivation of a carbon disulfide hydrolysis catalyst, i.e. a regeneration method after the deactivation of the carbon disulfide hydrolysis catalyst through taking activated carbon as a carrier. The regeneration method comprises the following steps of: washing the deactivated catalyst for 3-4 times with distilled water, drying for 3-4h at a temperature of 100-120 DEG C, then placing into an impregnant for ultrasonic impregnation for 30-60 minutes and finally drying for 3-4h at a temperature of 100-120 DEG C to obtain a regenerated catalyst. The regeneration method has the beneficial effects that the operation is simple, and the impregnation process is easy for operation; moreover, the impregnant is cheap, is easily obtained and easily realizes the industrialization; and the regenerated catalyst is high and is superior to a fresh catalyst in activity and can be widely applied to the removal of carbon disulfide in various gas sources.

The invention relates to a method for continuously producing a rare-earth sulfide coloring agent in a large scale. The method comprises the following steps: firstly, adopting a rare-earth compound, sulfur, an alkali metal compound, solid carbon and a fluoride in a suitable weight ratio for roasting reaction at 800-1500 DEG C to prepare a rare-earth sulfide coloring agent primary product; then adding one or more of stearate, phosphate, oxalate, an aluminum salt, silicate, a zirconium source and ammonia water into the rare-earth sulfide coloring agent primary product for washing for several hours, and performing spray drying to finally prepare the rare-earth sulfide coloring agent; the product performance of the finally prepared rare-earth sulfide coloring agent is stable, and the temperature resistance, the acid resistance, the weather resistance and the chromaticity are obviously improved. The method disclosed by the invention has the advantages that the operation is simple, the cost is low, poisonous and harmful gases such as hydrogen sulfide and carbon sulfide are not used in the production process, and the production efficiency is high.

The invention discloses an alkali-free green synthetic method for isothiocyanate, and relates to the field of organic chemical industry. The method includes the steps: (1) adding solvents into carbon sulfide reagents and primary amine serving as raw materials, performing organic reaction at the temperature of 100-150 DEG C for 10-30 hours; (2) cooling and spin-drying the raw materials after reaction, adding dichloromethane, extracting and separating organic phases by 10% of dilute hydrochloride acid, washing the organic phases, combining the organic phases into an organic layer, washing the organic layer with saturated salt water, drying the organic layer by anhydrous Na2SO4, and performing column chromatographic separation to obtain the isothiocyanate. The molar ratio of the carbon sulfide reagents to the primary amine is 1:1.2-3. Compared with a preparation method in the prior art, the method has the advantages that only heating reaction needs to be performed in the solvents, additional alkali is omitted, and the method is greener and more environmentally friendly and has better application values.

The invention relates to a preparation method of a cathode material coated with carbon in situ with carbon sulfide and belonges to the technical field of batteries. An iron source and an S source aremixed in proportion; the mixed powder is placed in a mortar to be ground and uniformly mixed; the ground mixed powder is placed in a porcelain boat, the boat is placed in an atmosphere furnace and subjected to high temperature treatment, and cooling is executed to room temperature to obtain a FeSx@C cathode material. The FeSx@C material synthesized by the method has good electrochemical performance and has high specific capacity; for lithium ion batteries, especially under high rate charge and discharge, the capacity can be maintained at 1000 mAh/g after 100 cycles, and good cyclicity is showned; for sodium ion batteries, the first-circle discharge capacity is as high as 816 mAh/g and is a high specific capacity in sodium batteries.