METHOD FOR ELIMINATING PIPELINE BLOCKAGE IN CRYOGENIC SYSTEMS FOR PRODUCTION, STORAGE, USE AND UTILISATION OF NATURAL GAS BY CRYSTALLISED COMPONENTS AND APPARATUS FOR IMPLEMENTATION OF THE METHOD Russian patent published in 2021 - IPC F17D1/00 H05B6/64 

FIELD: gas industry.

SUBSTANCE: invention relates to the gas industry, specifically to technology of production, storage, use and utilisation of liquefied natural gas, particularly to a method and apparatus for eliminating pipeline blockage in cryogenic systems for production, storage, use and utilisation of liquefied natural gas by crystallised components. The method is implemented by introducing ultra high frequency emission into a pipeline located in a heat-insulating inter-wall space and in the cavity of a vessel, and the emission is delivered to the blockage points, used as a waveguide. The ultra high frequency energy is therein converted into higher-order wave fields at the points of bends and inhomogeneities of the pipeline constituting elements of wave impedance of the served vessel, and the electromagnetic energy of higher-order waves is accumulated and converted into thermal energy, shifting the equilibrium towards increasing solubility of at least one crystallised component of liquefied natural gas in methane. The apparatus is comprised of an explosion-proof body, an ultra high frequency generator, a directional coupler, a waveguide transition, a radio-transparent diaphragm, a power meter, a cooling system for heat-emitting elements of the ultra high frequency generator, a waveguide pipeline, wherein wave impedance elements of the vessel pipelines are used as heating elements.

EFFECT: technical result of the proposed group of inventions is reduced loss of liquefied natural gas and eliminated temporary deterioration of heat-insulating properties of vacuum insulation of a vessel or a pipeline during elimination of the blockage.

22 cl, 5 dwg