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US 11,897,833 B2Granted
Removing organic acids in monoethylene glycol recovery
AssigneeCameron International Corporation
InventorSteven Langley
Life of this patent
Estimating the term…
Abstract
Embodiments described herein provide a method, comprising reducing pH of a glycol vaporization separator purge stream to form an acid stream; distilling the acid stream to form an overhead stream and a bottoms stream; and recycling the bottoms stream to the vaporization separator.
Claims20
A method for removing organic acid salts in monoethylene glycol recovery, comprising:
- controlling a purge stream from a vaporization separator based on a physical property indicating buildup of organic salts in monoethylene glycol that circulates through the vaporization separator, wherein the physical property comprises a viscosity or a density;
- reducing pH of the purge stream to form an acid stream;
- distilling the acid stream to form an overhead stream and a bottoms stream;
- and
- recycling the bottoms stream to the vaporization separator.
2 more elements
A method for removing organic acid salts in monoethylene glycol recovery, comprising:
- detecting a physical property indicating buildup of organic salts in a pumparound stream of a glycol vaporization separator, wherein the physical property comprises a viscosity or a density;
- comparing the physical property to a first threshold value indicating the organic salts in the pumparound stream need treatment;
- withdrawing a purge stream from the pumparound stream if the physical property reaches the first threshold value;
- reducing pH of the purge stream to form an acid stream;
- distilling the acid stream to form an overhead stream and a bottoms stream;
- and
- recycling the bottoms stream to the glycol vaporization separator.
4 more elements
A method for removing organic acid salts in monoethylene glycol recovery, comprising:
- withdrawing a purge stream from a liquid volume of a glycol vaporization separator based on a physical property of the liquid volume indicating buildup of organic salts in the liquid volume wherein the physical property comprises a viscosity or a density;
- mixing an aqueous acid with the purge stream to form an acid stream at a rate of the aqueous acid that is based on a pH of the acid stream;
- providing the acid stream to a packed distillation column at a location below a packing inside the packed distillation column;
- distilling the acid stream to form an overhead stream and a bottoms stream;
- and
- recycling the bottoms stream to the glycol vaporization separator.
3 more elements
Dependencies are inferred from the claim text.