6results about How to "High carbon content" patented technology

This invention provides a road petroleum asphalt-based hard-soft carbon composite material, the raw materials of which include road petroleum asphalt, light component small molecule stabilizer, heavy component small molecule oxidant, activator, and solvent; and the ratio of road petroleum asphalt:solvent:light component small molecule stabilizer:heavy component small molecule oxidant:activator is 1:15-25:0.05-0.2:0.05-0.2:2-5, calculated in g / mL / g / g / g. Furthermore, this invention also provides a method for preparing the aforementioned hard-soft carbon composite material, which includes the following steps: crosslinking treatment of the light component, crosslinking treatment of the heavy component, activation, and carbonization. This invention solves the problem in the prior art where the high price or low carbon yield of hard carbon precursors, high cost of oxidants, or complex overall formulations lead to high costs for the prepared asphalt-based sodium-ion battery anode carbon materials. The hard-soft carbon composite material of this invention not only has a lower cost but also combines the advantages of both hard and soft carbon, exhibiting high sodium storage capacity, high reversible specific capacity, high initial charge-discharge efficiency, and good cycle performance.

This invention belongs to the technical field of bactericide residue analysis and determination in plant-derived foods, specifically relating to a method for detecting isobutylethoxyquinoline and its metabolites in plant-derived foods. The method includes extraction with acetonitrile under citrate conditions, followed by purification with C18 (25 mg), PAX (25 mg), and XFM64 (nitrogen-doped multi-walled carbon nanotubes, 10 mg) adsorbents. Chromatographic separation is performed using a C18 column with methanol-2 mmol / L ammonium acetate (containing 0.1% formic acid) as the mobile phase, isocratic elution at a flow rate of 0.40 mL / min, electrospray ionization (ESI+), and detection in multiple reaction monitoring (MRM) mode. This invention is simple to operate, has high pretreatment efficiency, and its precision and recovery rate meet the regulatory residue limit monitoring requirements. It is suitable for the simultaneous determination of isobutylethoxyquinoline and its metabolites in plant-derived foods.

The application discloses a ferrite-pearlite steel structure heat treatment method, and relates to the technical field of metal material heat treatment, and aims at solving the technical problem that the ferrite-pearlite steel processed by the existing heat treatment process has high strength but low toughness. The ferrite-pearlite steel structure heat treatment method comprises the following steps: heating and elevating a ferrite-pearlite steel workpiece to a temperature 30-60 DEG C higher than Ac3, and performing first heat preservation treatment under the temperature condition; the time of the first heat preservation treatment is at least the time required for the temperature distribution of the steel workpiece to be uniform; after the first heat preservation treatment, the steel workpiece is cooled to a temperature 0-60 DEG C higher than Ac1, second heat preservation treatment is performed under the temperature condition, and then the steel workpiece is cooled to normal temperature, the heat treatment is completed, and the time of the second heat preservation treatment is at least the time required for the temperature distribution of the steel workpiece to be uniform. The technical scheme provided by the application is used for heat treatment of the ferrite-pearlite steel workpiece, so as to improve the toughness of the steel workpiece.

This invention relates to the field of comprehensive resource utilization, specifically to an apparatus and method for increasing the amount of graphite precipitation in molten iron. The apparatus includes a blast furnace molten iron trough, with multiple injection pipes at the bottom. The other end of each injection pipe is connected to a pulverized coal feeding system via a conveying pipe. The method involves injecting pulverized coal into the molten iron trough through the injection pipes to increase the carbon content of the molten iron. As the molten iron cools, it becomes supersaturated with carbon, leading to graphite precipitation. This invention injects pulverized coal into the molten iron trough, utilizing the higher temperature of the molten iron and the stirring kinetic energy generated by the iron flow to promote rapid and efficient dissolution of the pulverized coal, increasing the carbon content. Furthermore, by employing a suitable blast furnace molten iron cooling rate, it significantly improves the subsequent graphite precipitation ratio under the same conditions. The carbon injected into the molten iron in the form of pulverized coal ultimately precipitates as graphite, greatly enhancing the added value of iron and steel metallurgy and resulting in significant economic benefits. It also has a significant impact on the development of emerging graphite resources.

This invention belongs to the field of battery manufacturing technology, specifically relating to a wood-based hard carbon anode material, its preparation method, and its application in sodium-ion batteries. Addressing the high cost of hard carbon material precursors, this invention proposes a method for preparing a wood-based hard carbon anode material, comprising: using natural wood particles as a carbon source precursor, first subjecting them to hydrothermal treatment in a strong acid solution containing hydrogen peroxide, followed by high-temperature carbonization to obtain the wood-based hard carbon anode material. This invention uses natural wood as a raw material, eliminating the need for pore-blocking agents, and thus forming a wood-based hard carbon anode material with a closed-cell structure, providing a better environment for sodium ion insertion and extraction.

This invention relates to the field of petrochemical technology, specifically to a method and apparatus for increasing the production of high-quality, low-sulfur petroleum coke. The method includes: subjecting feedstock oil and catalyst to hydrodesulfurization pretreatment; heat-treating the resulting liquid-solid component I; separating and extracting the resulting liquid-solid component II; and coking the obtained coking feedstock to obtain low-sulfur petroleum coke with a sulfur content ≤2 wt%. The catalyst is selected from at least one complex formed by the coordination bonding of an active metal and an organic ligand. The method provided by this invention not only achieves efficient conversion of feedstock oil and increases the production of high-quality petroleum coke, but also broadens the feedstock sources for low-sulfur petroleum coke, realizing the economic added value of feedstock oil, especially high-sulfur, low-quality feedstock oil.