FIELD: energy saving and ecologically safe technologies of pipe line transportation of oil and petroleum products in erection of new pipe lines and modification of acting pipe lines. SUBSTANCE: method consists in using ecologically pure secondary energy resources of gas mains for preheating oil (petroleum products), viz.: heat from flow of compressed gas in cooling this gas; technological processes are partially combined by means of heat-exchanger system. EFFECT: reduced consumption of primary energy resources for transportation of oil (petroleum products) at any natural viscosity; ecologically pure technology. 1 dwg
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