REGENERATION UNIT OF RICH GLYCOL (OPTIONS) Russian patent published in 2018 - IPC B01D53/00 

FIELD: gas industry.

SUBSTANCE: invention relates to glycol-dehydration plants and can be used in the gas industry. Proposed unit in the first variant includes a regeneration unit in a three-section vacuum column with a dephlegmator, steaming and cooling sections and a condenser, a cleaning unit comprising a column of similar construction, as well as a vacuum-producing device and heating and cooling systems. In the second variant, the cleaning unit is equipped with a column with a vertical baffle. In the reflux and cooling sections of the columns and the condenser, a refrigerant is supplied from the cooling system, and a heat carrier is supplied to the steaming sections from the heating system. In the operation of the first block variant, the rich glycol is fed to the regeneration unit column, from the bottom of which a cooled regenerated glycol is removed, and from the top water vapor is fed into the condenser from which the stripping gas is directed to the vacuum-creating device and the condensate is discharged from the bottom. Portion of the regenerated glycol is fed to the purification unit column, to the bottom of which a portion of the fuel gas is supplied as a stripping, from the bottom of the column, a cooled deeply regenerated glycol is withdrawn, and from the top of the column the waste gas is discharged to the vacuum-producing device. Fuel gas and waste gas from the vacuum-producing device are supplied as a fuel to the heating system. In operation of the second block variant, a portion of the regenerated glycol is fed to the middle of the column in the region of the vertical baffle placement, the upper part of the column is cooled and the upper part is heated. From the bottom of the column a concentrate of heavy impurities is removed, from the middle of the column a deeply regenerated glycol is removed from the back of the vertical baffle.

EFFECT: technical result is simplification of the regeneration unit, reduction in glycol losses and increase in the degree of its purification.

5 cl, 2 dwg