DEMETHANIZER (OPTIONS) Russian patent published in 2023 - IPC F25J3/06 C10G5/06 

FIELD: oil and gas industry.

SUBSTANCE: design of distillation towers used for demethanization of unstable fractions of light hydrocarbons in the oil and gas industry. A demethanizer consists of an upper and a lower part and is equipped with lines for the removal of dry stripped gas and demethanized wide fraction of heavy hydrocarbons. The lower part of the demethanizer is equipped with input/output lines for circulating irrigations. The upper part of the demethanizer is equipped with the first input line from the top of the liquid methane fraction as live reflux, the second input line from the top of the reduced gas separation residue, which is obtained by refluxing the cooled feed gas separation gas, the third input line from the top of the reduced residue, which is obtained by refluxing the cooled feed separation gas, and the fourth line from the top of the input of the residue, which is obtained by separating the reduced residue obtained by separating the cooled feed gas. The invention also relates to the demethanizer option.

EFFECT: reduction of ethane losses with dry stripped gas and reduction of the diameter of the upper part of the demethanizer.

2 cl, 2 ex, 2 dwg