Method and equipment for separating gas mixture containing methane by distillation and gas obtained by separation
A technology of mixtures and fractions, applied in lighting and heating equipment, cold treatment separation, refrigeration and liquefaction, etc., can solve the problems of multi-energy and consumption, and achieve the effect of reducing compression costs
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[0028] The following symbols appear specifically in both figures: FC - for flow controller; GT - for gas turbine; LC - for liquid level controller; PC - for pressure controller; SC - for speed controller; and TC - refers to temperature controller.
[0029] In order to make the drawings clear and concise, the pipelines used in the equipment in Figures 1 and 2 will be marked with the same numerals as the gaseous fractions flowing therein.
[0030] Referring to Figure 1, the apparatus shown is used to process dry natural gas for the specific purpose of, in one aspect, separating from the natural gas a fraction consisting essentially of methane that is substantially free of any C 2 and higher hydrocarbons; on the other hand, a predominantly C-containing 2 and fractions of higher hydrocarbons that are substantially free of any methane.
[0031] The dry natural gas 14 is first divided into a fraction 15 and another fraction 16, the fraction 15 being sent to a heat exchanger E1 for ...
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