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Possibilities and prospects of accumulation of the electric power generated on objects of renewable energy sources - solar and wind power plants, with use of cryogenic liquids are considered. A comparison of the three most common ways of accumulating electricity: using lithium-ion batteries, hydrogen, liquid air. According to the proposed technology, the efficiency of recovery of electricity from liquid air is from 54 to 70%. The developed technology is based on cryogenic and thermal accumulation and has a high accumulation coefficient. It is shown that energy storage in cryogenic storage devices is the cheapest today. The proposed technology can also be used to generate electricity from liquefied natural gas using standard equipment developed by industry. The technological scheme of the cryoaccumulating station is offered. Bibl. 10, Fig. 1, Table 1.

The article presents the results of the development of the modernization of the complex gas preparation installation, namely the modeling of the processes of removing heavy hydrocarbons at the stage of preparing natural gas for transportation. Heavy hydrocarbons, which are removed at this stage, become a separate commodity product in the process of processing. With the use of software systems for computer simulation of technological processes of GazCondNafta and HYSYS, a variant of the modernization of the existing installation of complex gas preparation of the gas condensate field was developed. Options for modeling technological schemes for obtaining target fractions of methane, ethane, propane, butane from natural gas, gas synthesis and pyrolysis gas are given. Bibl. 9, Fig. 5, Tab. 8.

When implementing a number of high-temperature processes with heat supply to the reaction zone (allothermic processes), it is impossible or economically inexpedient the burning of fossil fuels to achieve the required temperature level. The possibilities of these processes implementation through the use of electrothermal fluidized bed (ETFB) techniques are considered. Such processes include, for example, the production of hydrogen by the pyrolysis of hydrocarbon gases, the production of silicon carbide and other carbides, the production of artificial graphite and the thermal purification of natural graphite, the high-temperature heating of gases and gas mixtures. These processes can be carried out in the temperature range of 600–3000 °С using fine-dispersed materials or directly in the gas phase using ETFB. In a number of processes ETFB technology can be applied as a source of high temperature gas production, used either for the implementation of this technological process, or for ensuring the operation of technological or heat engineering equipment. Also considered the main structural characteristics of the equipment that ensure the implementation of processes in the ETPS. Bibl. 37.

The peculiarities of storing electricity produced by traditional systems of its production and using renewable energy sources are considered, the state of the problem is discussed. Examples of industrial application of electricity storage systems using compressed and liquefied air are given. Liquid air storage systems have been shown to be the most efficient. A scheme for the accumulation of electricity and its production with the use of turbo-expander power generator units with the use of liquefied air is proposed. Taking into account the situation that has developed in Ukraine in connection with the spread of the COVID-19 virus, a scheme for obtaining liquid medical oxygen by the cryogenic method on low-tonnage transportable equipment is proposed. Bibl. 10, Fig. 2.