41 results about "Carbon oxysulfide" patented technology

The invention relates to the field of high molecular material synthesis and aims at providing polythiocarbonate and a preparation method thereof. The preparation method comprises the following steps of: adding an epoxide, carbon oxysulfide and a catalyst into a dry high-pressure reaction kettle, carrying out reaction for 1-12 hours at 20-150 DEG C and self-generated pressure, purifying the generated product and drying the generated product to obtain a polythiocarbonate product, wherein the catalyst is a zinc-cobalt double-metal cyanide complex or a silicon dioxide loaded zinc-cobalt double-metal cyanide complex. The polythiocarbonate provided by the invention has wide purposes, the refractive index of the polymerized product is obviously higher than that of a general polymer, such as a COS (Carbon Oxysulfide)-cyclohexene oxide copolymer, and is 1.66, and therefore the polythiocarbonate has potential use in the aspect of a light-guide fiber.

A system for producing oil and/or gas comprises a formation comprising a mixture of oil and/or gas and an enhanced oil recovery mixture comprising an additive to increase an auto-ignition temperature of the mixture and a carbon disulfide formulation and/or a carbon oxysulfide formulation; and a mechanism for recovering at least a portion of the oil and/or gas.

The invention belongs to a device and a method for simultaneously producing ultra-high-purity carbon oxysulfide and high-purity carbon disulfide. The device comprises a carbon monoxide raw material gas pipeline provided with a first regulating valve, a sulphur raw material pipeline, a carbon disulfide product tank and a carbon oxysulfide product tank, wherein the carbon monoxide raw material gas pipeline and the sulphur raw material pipeline are respectively connected with a first raw material inlet and a second raw material inlet of a reactor; an outlet of the reactor is connected with a buffer tank; a gas outlet formed in the top of the buffer tank is connected with an entrance of a first rectifying tower, a liquid phase outlet of the first rectifying tower is connected with an entranceof a third rectifying tower, and a liquid phase outlet of the third rectifying tower is connected with the carbon disulfide product tank; a gas phase outlet of the first rectifying tower is connectedwith a raw material inlet of a second rectifying tower, and a liquid phase outlet of the second rectifying tower is connected with the carbon oxysulfide product tank; the device and the method have the advantages that a three-tower type complex distillation process is used for extracting the carbon oxysulfide with the purity of not lower than 99.999%, and the purity of the carbon disulfide is improved to 99.99%.

The invention discloses a method for preparing high-purity carbon oxysulfide gas. The method comprises the following steps of: (i) synthetic reaction: allowing saturated ammonium thiocyanate solution to react with sulfuric acid in a reactor to generate the carbon oxysulfide gas containing impurities; (ii) alkaline washing: continuously introducing the carbon oxysulfide gas containing impurities into a primary alkaline washing tower and a secondary washing tower to remove trace acidic impurities; (iii) primary drying; (vi) secondary drying; and (v) rectification. The method has the advantages of simple equipment, convenience of operation, safe equipment operation, high yield and the like.

The invention relates to a detection method of trace volatile sulfides in a gypsum board. The detection method solves the problems of poor selectivity and difficulty for accurate analysis of volatile sulfides with a low concentration in present detection methods. The detection method realizes the qualitative and quantitative analysis of an object to be detected by placing a gypsum board in a climate box, keeping a constant temperature and humidity, and performing trapping by a solid adsorbent, thermal desorption, separation by a capillary column of gas chromatography, and detection by a flamephotometric detector. The detection method has the advantages of high selectivity, and high sensitivity, is especially applicable to the analysis and determination of trace volatile sulfides (hydrogen sulfide, sulfur dioxide, carbon oxysulfide, carbon disulfide) with a low concentration and multiple components, has accurate and reliable determination, and has good application prospects.

The invention discloses a production method of high-purity carbon oxysulfide. The production method comprises the following steps of: introducing carbon oxide into molten sulfur in a reaction kettle; reacting the carbon oxide with the sulfur to generate carbon oxysulfide by taking calcium chloride as a catalyst; and getting the carbon oxysulfide through calcium chloride and molecular sieve two stage adsorption columns to remove impurities and moisture successively, thereby preparing the high-purity carbon oxysulfide. According to the production method of the high-purity carbon oxysulfide, excess carbon oxide gas and the sulfur are subjected to chemical reaction under the condition of taking the calcium chloride as the catalyst to generate the carbon oxysulfide, the impurities and moisture in the carbon oxysulfide are effectively removed by utilizing the calcium chloride and the molecular sieve as adsorbents in sequence; and thus, the high-purity carbon oxysulfide with purity of reaching up to 98 percent can be prepared. Since the catalyst is properly selected and the process steps are rationally arranged, the reaction speed can be greatly increased, the yield can be improved, and the purity of a product is high; and thus, industrial production can be realized to meet the current market requirements.

The invention discloses a method for preparing carbon oxysulfide and co-producing a sulfur-containing polymer. The method includes the following steps: using carbon disulfide and an oxygen-containingmonomer A as raw materials, under the catalysis and initiation effects of Lewis base M, obtaining COS by an oxygen-sulfur exchange reaction and generating an aliphatic polythioether, wherein the reaction temperature is 60-180 DEG C; and reacting the generated COS with an oxygen-containing monomer B under the catalysis effect of Lewis base N and/or Lewis acid to obtain poly(mono thiocarbonate), wherein the reaction temperature is 0-100 DEG C. The method uses an oxygen-sulfur exchange reaction between carbon disulfide and the oxygen-containing oxide to prepare carbon oxysulfide and a plurality of sulfur-containing polymers. The used catalysts can be purchased. No problems of metal residue and color residue exist. The method has good universality and is suitable for large-scale industrial production. Three products with high added value are obtained from two products. Therefore, the prepared aliphatic polythioethers and poly(mono thiocarbonate) are abundant in variety, and the types and applications of sulfur-containing polymers are expanded.

A system for producing oil and/or gas comprising a formation comprising a mixture of oil and/or gas and an enhanced oil recovery mixture comprising an additive to increase an auto-ignition temperature of the mixture and a carbon disulfide formulation and/or a carbon oxysulfide formulation; and a mechanism for recovering at least a portion of the oil and/or gas.

A system including a mechanism for recovering oil and/or gas from an underground formation, the oil and/or gas comprising one or more sulfur compounds; a mechanism for converting at least a portion of the sulfur compounds from the recovered oil and/or gas into a carbon oxysulfide formulation; and a mechanism for releasing at least a portion of the carbon oxysulfide formulation into a formation.

The invention provides a method for preparing monothiocarbonate. The method is characterized in that epoxypropane and carbon oxysulfide are in contact with a catalyst under cycloaddition reaction conditions, wherein the catalyst comprises a template removed titanium silicalite molecular sieve and a template-containing titanium silicalite molecular sieve. The method has the advantages of mild reaction conditions, high epoxypropane conversion rate and high monothiocarbonate selectivity. The method is a green synthesis technology, and also has the advantages of no special production requirements,simplicity and easiness in control of the process, and facilitation of industrial production and application.

The invention discloses a carbon oxysulfide detection reagent and a preparation method thereof and belongs to the technical field of gas detection. The carbon oxysulfide detection reagent is composed of, by mass, 5-10 parts of zinc nitrate, 2-6 parts of zinc oxide, 3-8 parts of sodium borate, 12-22 parts of potassium hypermanganate, 1-4 parts of calcium alkyl salicylate, 2-5 parts of triphenylmethanol and 12-20 parts of deionized water. The preparation method includes the following steps: (1), preparing a premixed solution; (2), obtaining a clear mixed solution; (3), sealing after vacuum standing for 4-8h to obtain the carbon oxysulfide detection reagent. A carbon oxysulfide colorimetric method has the advantages of sensitivity in reaction, high detection accuracy and easiness in operation, and low-concentration carbon oxysulfide in environment can be detected quickly and quite conveniently.

The invention discloses a catalytic supported polymer. The structural formula is any one of a formula (I) or a formula (II). In the formulas, A is a urea or thiourea group, B is onium salt with positive charges, M is a comonomer, and X is a corresponding negative charge balance ion; and m represents the number of A and is any integer between 1 and 100000, and n represents the number of onium salt groups and is any integer between 1 and 100000. The invention also discloses a preparation method of the catalytic supported polymer, and application in catalysis of polymerization of one or more cyclic monomer bodies for obtaining amacromolecular polymer or a reaction of one or more cyclic monomers with carbon dioxide, carbon disulfide, carbon oxysulfide and carbon monoxide to obtain small molecular compounds and macromolecular polymers of cyclic carbonate cyclic lactone, and cyclic thiocarbonate. The catalytic supported polymer has relatively high catalytic activity and selectivity when applied to catalytic preparation of organic micromolecule and macromolecular polymers.

The invention relates to hydrocarbon streams containing impurities such as carbon oxysulfides, to processes for upgrading the hydrocarbons by removing at least a portion of the impurities therefrom, to equipment useful in such processes, and to the use of upgraded hydrocarbons for, e.g., chemical manufacturing.

A system for producing oil and/or gas comprising a mechanism for releasing at least a portion of a sulfur containing compound into a formation; a first mechanism for converting at least a portion of the sulfur containing compound into a carbon disulfide formulation and/or a carbon oxysulfide formulation, the first mechanism for converting within the formation; and a second mechanism for converting at least a portion of the carbon disulfide formulation and/or a carbon oxysulfide formulation into another compound, the second mechanism for converting within the formation.

A system including a mechanism for releasing at least a portion of a sulfur containing compound into a formation; and a mechanism for converting at least a portion of the sulfur containing compound into a carbon disulfide formulation and/or a carbon oxysulfide formulation, the mechanism within the formation.

The invention belongs to the technical field of high polymer materials, and particularly relates to polythiocarbamate and a preparation method thereof. According to the method provided by the invention, carbon oxysulfide and 2-methyl aziridine are used as raw materials without use of a catalyst, so that polythiocarbamate can be obtained through copolymerization under the condition of a body or a solvent, and the reaction is preferably carried out at the temperature of 0-120 DEG C. The method developed by the invention has the advantages that the reaction can be carried out without a catalyst;raw materials are cheap and easy to obtain, synthesis is easy and convenient, and toxic sulfhydryl compounds and isocyanate compounds in a traditional system are not used; the prepared polythiocarbamate has a clear main chain structure and has a fully alternating structure; strong hydrogen-bond interaction exists between molecules, so that the polythiocarbamate has great thermal performance, is free of metal residue and is colorless; the synthesis process is simple and convenient to operate, mild in reaction condition, high in reaction rate and environment-friendly. The material has a strong adsorption effect on heavy metal mercury ions, and can be used for adsorbing mercury ions in a water system.