20 results about "Hydrate" patented technology

A towrope type ocean controllable source electromagnetism and earthquake data collection system is composed of electric field sensors (non-polarized electrodes) distributed in three or more towropes uniformly or not, three-component induction coil type or three-component fluxgate type magnetic field sensors and sonic sensors composed of hydrophones or accelerometers and is used for measuring ocean three-component magnetic-field components, electric field components EX distributed in the cable direction, electric field components EY distributed in the vertical cable direction and ocean earthquake data. The towrope type ocean controllable source electromagnetism and earthquake data collection system can collect ocean electromagnetism data and ocean earthquake data in the time domain and the frequency domain at the same time, increase the collection quantity of ocean geophysics data of advancing construction at a time in a multiplying mode, effectively improve the target detection precision and explore and evaluate ocean mineral products, oil and gas resources and methane hydrates through combination and comprehensive application of ocean controllable source time-frequency electromagnetism and the earthquake exploration technology.

The invention relates to the technical field of photocatalysis, and specifically relates to a graphene-based gamma-FeO2O3 composite material photocatalyst, and a preparation method and use thereof. According to the graphene-based gamma-FeO2O3 composite material photocatalyst, gamma-Fe2O3 particles are attached to the surface of graphene, size distribution of the graphene is 1-50 mu m and the size distribution of the gamma-Fe2O3 particles is 20-500nm. The preparation method mainly comprises the following steps: preparation of graphite oxide; preparation of a graphite oxide iron sulfate hydrate intercalating matter; and preparation of the graphene-based gamma-FeO2O3 composite material photocatalyst. The graphene-based gamma-FeO2O3 composite material photocatalyst prepared by the preparation method disclosed by the invention has high carrier transmission rate, large specific surface area and low energy gap, so that the photocatalyst has extremely high activity of photocatalytic degradation of organic matters. The photocatalytic activity of the photocatalyst disclosed by the invention is over 86% higher than that of pure gamma-FeO2O3 particles. The photocatalyst has good circular stability, can be repeatedly used for many times, and does not cause secondary pollution in the photocatalytic degradation process.

The invention belongs to the technical field of marine gas hydrate resource development project, and particularly relates to a test method for the transport law of hydrate layer output fine sand in a gravel layer and a test device thereof. A simulated pack stratum sand sub-tube and a simulated pack gravel layer sub-tube are adopted to be connected through a quick connector to form a sand pack model for testing. A shunting steel block is installed at the inlet end, and an online laser particle analyzer and an electronic scale are connected at the outlet end through a porous mesh board. Sampling holes and pressure measurement holes are relatively arranged on the sand pack model. A differential pressure gauge is installed between the two adjacent pressure measurement holes, and all the hardware equipment is connected with a data acquisition and processing module. The change law of the output and the output particle size of the stratum fine sand under the gravel pack condition can be monitored in real time so that the test technology and experimental data support can be provided for the research of the transport mechanism of the fine sand in the pack gravel layer induced by hydrate depressurizing exploitation, and the test method and the test device have an important reference meaning for designing reasonable gravel pack parameters and extending trial exploitation duration.

The invention relates to a method for preparing a perylene polyimide derivative film in the technical field of photoelectric materials. In the method, hydrazine hydrate is used for replacing trifluoroacetic acid, a positive electrode deposition method is adopted, and a dense and uniform film is prepared with a low voltage of 0.5-5V and a low current of 0.02-5mA within a relatively short deposition time. Moreover, composite films conforming to various absorption ranges are prepared through changing the structure and the matching of the perylene polyimide derivative.

Provided herein are methods of treating, preventing, managing, and/or ameliorating leukemia or myelodysplastic syndrome comprising administering 2-(4-chlorophenyl)-N-((2-(2,6-dioxopiperidin-3-yl)-1-oxoisoindolin-5-yl)methyl)-2,2-difluoroacetamide or a stereoisomer or mixture of stereoisomers, an isotopologue, pharmaceutically acceptable salt, tautomer, solvate, hydrate, co-crystal, clathrate, or polymorph thereof to a patient.

A solid co-crystallized monoglyceride and fatty acid lactylate emulsifier and starch-complexing agent is provided in which a saturated monoglyceride and a fatty acid lactylate salt are completed to produce a homogenous composition, and then cooled and solidified under conditions forming discrete co-crystallized stable emulsifier particles having a differential scanning calorimeter (DSC) defined melting point of no more than about 60° C. Saturated monoglycerides are functional only after the temperature thereof has been increased to their Krafft temperature of about 60° C. Previously, it has been necessary to pre-hydrate monoglycerides to make them functional when added to bread doughs and batter formulations at conventional commercial baking temperatures of about 70° F. to about 80° F. The co-crystallized monoglyceride and fatty acid lactylate combination of this invention is fully functional without pre-hydration when incorporated in starch bearing dough and batter products at normal commercial baking temperatures.

The invention provides an inhibitor-combined natural gas hydrate replacement mining method, and belongs to the technical field of marine natural gas hydrate mining. Firstly, a plurality of mining wells are drilled in a mining area to the interior of a natural gas hydrate mineral deposit, and each mining well comprises a vertical well section and a horizontal well section; during exploitation, an inhibitor is injected into a reservoir through an injection well, a pore channel is opened, the stratum permeability is improved, and then carbon dioxide is injected for replacement exploitation. Diffusion of the inhibitor and carbon dioxide between two mining wells is facilitated by controlling the pressure difference between the injection well and a collection well. In a replacement mining process, the inhibitor can prolong the generation time of carbon dioxide hydrate injected into the periphery of a shaft, so that the carbon dioxide diffusion distance is increased, the contact area of replacement reaction is increased, and the mining depth and efficiency are improved. The method is easy to implement, the replacement depth and speed can be greatly increased, and the method can be used for large-scale exploitation of natural gas hydrates.

The invention belongs to the technical field of chemical engineering, and relates to a method for preparing particle boric fertilizer. The method takes decahydrate, borax penta hydrate and concentrated sulfuric acid as raw materials, and the raw materials are mixed, granulated, screened and dried to prepare the particle boric fertilizer. The process of the method is simple and easily realized, and the particle boric fertilizer produced by the method is favorable fot the uptake to crop, is convenient to transport and has quite wide application prospect.

The invention discloses a method for manufacturing tetrahydrate disodium octaborate, comprising 35-40 parts by weight of boric acid and 40-45 parts by weight of borax penta hydrate are mixed together and added with 20-25 parts by weight of water to be heated to 110-130 DEG C to be dissolved, and the reaction lasts for 60-80min under the condition of heat preservation; the solid of reactant is separated from water to obtain solid particles; the gas in the solid particles is exhausted; the solid particles are processed to be 300 meshes, so that the tetrahydrate disodium octaborate is prepared. By regulating the reactant and the mixture ratio thereof, the method can increase the content of the tetrahydrate disodium octaborate of the resultant of reaction, thus solving the current situation that the tetrahydrate disodium octaborate is limited by import in the aspect of agriculture and industry.

The invention discloses a preparation method for dihydrosafrole. Piperidine and propionyl chloride are used as initial raw materials, and the preparation method comprises the following steps of: 1) acylation reaction of Friedel-crafts of the piperidine: reacting the piperidine and the propionyl chloride in a solvent I under the catalytic action of a lewis acid catalyst, adding iced water after finishing the reaction, standing, separating phases, washing an organic phase in the lower layer and distilling the solvent I to obtain piperonyl ethyl ketone; and 2) reduction reaction of Wolff-Kishner-Huang-min-lon of the piperonyl ethyl ketone: refluxing the piperonyl ethyl ketone and hydrazine hydrate solution at the mass concentration of 80 to 90 percent in a solvent II for hydrazone reaction, and adding polyethyleneglycol-400 and potassium hydroxide and performing hydrazone decomposing reaction to obtain the dihydrosafrole. The method for preparing the dihydrosafrole has the characteristics of high product yield rate, mild process condition, simple operation and the like.

The invention discloses a solar photovoltaic refrigeration assisted hydrate method carbon capture system. A solar power generation device is connected with a thermoelectricity refrigeration device and an inverter, and the other end of the inverter is connected with an absorption-type refrigerating machine and various levels of compressors; after exchanging heat with the thermoelectricity refrigeration device and the adsorption-type refrigerating machine, a refrigerating medium exchanges heat with various levels of coolers and various levels of reaction kettles; and mixed gas such as industrial smoke CO2, N2 and the like successively passes through the absorption-type refrigerating machine, a primary hydrate method carbon capture system and a secondary hydrate method carbon capture system. By utilizing the solar photovoltaic refrigeration assisted hydrate method carbon capture system, the gradient utilization of energy is realized, the solar power generation is used for providing power to the thermoelectricity refrigerating device, the absorption-type refrigerating machine and various levels of compressors, so as to provide a low-temperature high-pressure environment for generating a hydrate; and by adopting the hydrate two-level separation method, CO2 is captured, the process flow is simple, raw materials are cheap, and the separation efficiency is improved; and the solar power generation system, the thermoelectricity refrigerating system and the hydrate method CO2 capture system are used for separating the industrial gas, so that the pollution to the environment is small, and the energy utilization efficiency is high.

The invention discloses a process for improving yield of carbohydrazide. Dimethyl carbonate and hydrazine hydrate are used as raw materials, methanol is used as a solvent, a carbohydrazide solution is prepared, recrystallization is carried out, and the method concretely comprises the following steps: (1) reaction with insulation, (2) reduced pressure distillation, (3) crystallization, (4) centrifugation, and (5) drying. The method is advantageous in that the content of active component carbohydrazide reaches 98% or above, and the content of free hydrazine reduces to 400ppm or below; in the preparation process, a frequency conversion apparatus is used for separately controlling the temperature of the reaction with insulation, the temperature of reduced pressure distillation, and crystallization temperature; the reaction time is reduced, compared with traditional constant rotational speed process, the yield of the product is increased by 20% or above, at the same time, the content of free hydrazine is obviously reduced, and during crystallization, the rotating speed is low, the growth of crystal grains is uniform, later centrifugal operation is convenient, and appearance of the final product is more uniform.

The present invention relates to a process for the preparation of ceftaroline salts or hydrates thereof.

The invention relates to the field of metallurgy and specifically to a method for producing a titanium-rich material from a titanium concentrate. The production method for the titanium-rich material comprises the following steps: a, subjecting the titanium concentrate and sodium hydroxide to a melt reaction so as to generate a solid sodium metatitanate mixture; b, allowing the solid sodium metatitanate mixture to undergo rinsing, filtering and sorting so as to obtain a solid sodium titanate hydrate; c, reacting the solid sodium titanate hydrate with dilute sulfuric acid to obtain titanium liquid; and d, subjecting the titanium liquid to concentration and hydrolysis so as to obtain a metatitanic acid precipitate and drying the metatitanic acid precipitate so as to obtain the titanium-rich material. The production method for the titanium-rich material in the invention has the advantages of low comprehensive energy consumption, small discharge of waste gas, waste water and industrial residues, low production cost, mild reaction conditions, capacity of meeting requirements by using conventional production apparatuses and easy industrialization.

The invention relates to a method for synthesizing meropenem trihydrate and belongs to the technical field of synthesis of carbapenem antibiotics. The method for synthesizing meropenem trihydrate provided by the invention comprises the following steps: using protected meropenem (I) as a raw material, using a single solvent water as a reaction solvent, performing deprotection reaction with a non-hydrogen reducing agent in the presence of an alkali and a catalyst, and obtaining a target product meropenem trihydrate (II). The method provided by the invention is low in cost, not only solves the problem of dissolution of the catalyst by the reaction solvent, but also has advantages of less equipment investment, simple operation, mild reaction conditions, good selectivity, stable process, high yield and the like, and is suitable for industrial production.

The invention provides a purifying agent for a compound containing aldehyde impurities and application of the purifying agent. The purifying agent comprises borohydride of alkali metal and hydrazine hydrate, wherein the molar percentage of the borohydride of alkali metal is 2-20%, and the molar percentage of the hydrazine hydrate is 80-98%. When the purifying agent is added in the rectification and purification process of crude epoxypropane or crude isopentenyl alcohol containing 50-1000 ppm of aldehyde impurities, the content of the aldehyde impurities can be reduced to 20 ppm or below. The problems that in the prior art, the removal efficiency of impurity aldehydes in the crude epoxypropane or crude isopentenyl alcohol is low, and the purity of the obtained product is limited are solved. The purifying agent provided by the invention is high in impurity removal efficiency and convenient to apply.

The present invention relates to a process for preparing a compound of formula (Ia), (Ib), (Ic) or (Id), or a pharmaceutically acceptable salt, hydrate, solvate, complex or prodrug thereof, said process comprising the steps of: (A) (i) treating a compound of formula (IVa), where R⁴⁸ is alkyl or tosyl, with an oxidizing agent to form a compound of formula (Va); and (ii) converting said compound of formula (Va) to a compound of formula (Ia) or (Ic); or (B) (i) treating a compound of formula (IVb), where R⁴⁸ is alkyl or tosyl, with an oxidizing agent to form a compound of formula (Vb); and (ii) converting said compound of formula (Vb) to a compound of formula (Ib) or (Id).

The present invention discloses a corrosion-resistant and aging-resistant building brick, which comprises the following raw materials in weight part: 20-30 parts of cement, 5-15 parts of meerschaum, 5-15 parts of fly ash, 1-4 parts of magnesium oxide, 5-12 parts of calcium hydrate, 1-6 parts of barite, 15-25 parts of attapulgite, 1-4 parts of wollastonite, 5-12 parts of construction wastes, 5-12 parts of modified montmorillonite, 1-2 parts of cyclodextrin, 0.2-0.8 part of ethylene-vinyl acetate copolymer, and 0.1-0.5 part of polysiloxanes powder. The preparation process of the modified montmorillonite comprises the steps of adding montmorillonite powders and sodium dihydrogen phosphate into an oxalic acid solution, stirring the solution, standing the solution, extracting an upper layer of suspending liquid, adding sodium hydroxide into the suspending liquid, stirring, adding oxalic acid, stirring, adding potassium dihydrogen phosphate, stirring, adding ethylene diamine tetraacetic acid, stirring, centrifuging, drying, crushing, then adding a silane coupling agent and water to adjust the pH value of the system, stirring, filtering, washing, adding a glutaraldehyde aqueous solution, stirring, filtering, and drying to obtain the modified montmorillonite.