3results about How to "Stable and strong" patented technology

This invention relates to a method for extracting natural gas hydrates and the perfluorocarbon extractant used therein. The perfluorocarbon extractant comprises a viscosity modifier, an interface modifier, and a solvent; the viscosity modifier includes perfluorotributylamine; and the interface modifier includes perfluoropolyether and / or perfluorobutyric acid. The perfluorocarbon extractant of this invention exhibits high solubility for methane, strong hydrophobic properties, and stable physicochemical properties. During natural gas hydrate extraction, it allows methane released after hydrate decomposition to preferentially enter the extractant phase in a dissolved state and migrate within the reservoir, thereby achieving single-phase liquid extraction of methane. This technical approach can weaken or even eliminate the Jamin effect and seepage blockage caused by gas-liquid two-phase mixing, reduce reservoir flow resistance, and improve the extraction efficiency and continuous gas production capacity of natural gas hydrates in silty clay reservoirs.

The application discloses a spring steel wire section shaping device, which comprises a workbench, a guiding assembly, a traction assembly and a shaping assembly which are sequentially arranged on the workbench, the traction assembly comprises two symmetrically arranged mounting racks, a mounting plate arranged on the mounting rack, an upper traction roller and a lower traction roller arranged on the mounting plate, the shaping assembly comprises two symmetrically arranged vertical racks, a vertical plate arranged on the vertical rack, an upper shaping roller and a lower shaping roller arranged on the vertical plate, and a driving device for synchronously driving the upper traction roller, the lower traction roller, the upper shaping roller and the lower shaping roller to synchronously rotate is arranged between the traction assembly and the shaping assembly. The device has the following beneficial effects: the spring steel wire is subjected to uniform pressure in the whole processing process through accurate control of traction force and shaping pressure, thereby ensuring the consistency of the diameter and the accuracy of the section shape of the spring steel wire, and effectively solving the problem of local fracture caused by large diameter difference.

This utility model relates to a rotary kiln lining structure; each ring of the inner lining layer is provided with at least four evenly distributed lifting bricks, the inner surface of which protrudes from the inner surface of the microporous energy-saving inner lining brick. The lifting bricks on each ring of the inner lining layer are positioned one brick in the direction of rotary kiln operation, and form a corrugated spiral protrusion structure for tipping, lifting, and pushing materials. This improves the heat energy conversion rate, thereby improving the quality stability of the rotary kiln, increasing output, saving energy and reducing consumption, and achieving significant environmental protection effects, ultimately achieving the goal of a low-carbon economy.