METHOD AND SYSTEM FOR NATURAL GAS PREPARATION BEFORE SUPPLYING THEREOF TO CONSUMER WITH COMPLEX NATURAL GAS ENERGY USAGE, ENERGY-COOLING PLANT, AS WELL AS ENERGY DRIVE WITH IMPELLER MACHINE, GAS REFRIGERATOR AND ICE GENERATOR

FIELD: pipeline systems for gas distribution, particularly with the use of excessive gas pressure reduced in gas-distribution stations and adapted to obtain electric energy, cold and ice without fuel combustion. ^ SUBSTANCE: method involves using gas cooled by expanding thereof in expander without external work performing as cooling agent to cool air in refrigerator compartments and in ice generator. Part of cold gas passes in ice generator heat-exchanger connected to energy-cooling plant outlet or to collector linked with outlet of each energy-cooling plant to obtain consumer-demanded gas temperature at ice generator outlet. System for above method implementation includes gas refrigerator with compartments and heat-exchangers arranged in each compartment. The heat-exchangers are connected one to another in series. Outlet of above heat-exchangers is connected to pipeline which conveys gas to consumer. The system is provided with at least one ice generator having heat-exchanger linked to outlet of corresponding energy-cooling plant or with collector connected to outlet of each energy-cooling plant and with pipeline adapted to convey gas to consumer. Energy-cooling plant has turboexpander and electric generator, energy drive with impeller machine, gas refrigerator and ice generator used in the system. ^ EFFECT: increased efficiency of gas cold usage and environmental safety. ^ 31 cl, 5 dwg