| 摘要 |
FIELD: separation of hydrocarbon gas. SUBSTANCE: plant for extraction of propane from supply gas includes absorption column for generation of cold first exhaust vapor and liquid, heater for heating part of liquid for obtaining it in gaseous form, second column to which liquid in gaseous form is supplied for generation of second exhaust vapor. Second column is additionally connected with condenser by liquid flow which forms sprinkling condensate. Condenser uses part of cold first exhaust vapor as cooling agent. First part of sprinkling condensate is directed to second column and second part of sprinkling condensate is admitted to absorption column. According to second version, plant includes gas distributing element and ethane stripping column which includes additionally integral condenser at top of column for forming sprinkling condensate. Method of enhancing extraction of propane from supply gas consists in use of absorption and ethane stripping columns, forming first recirculating loop where first part of sprinkling liquid enters ethane stripping column by recycle, forming second recirculating loop where second part of sprinkling liquid enters absorption column and forming third recirculating loop where liquid from absorber enters heat exchanger for cooling supply gas of absorber and then enters ethane stripping column. EFFECT: increased degree of extraction of propane from supply gas. 20 cl, 1 dwg
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