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US 2015/0083576 A1Published application
System and Process for Reclaiming Single and Mixed Amine Solvents
AssigneeHTC Purenergy Inc.
InventorsAhmed A. Aboudheir, Walid H. Elmoudir
Life of this patent
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Abstract
A processes is for purifying an amine compound from a feed solvent which includes an amine salt of the amine compound. The process includes heating the feed solvent in a single stage evaporator of a reclaimer at a reduced operating pressure by feeding the evaporator with a constant amount of thermal energy; and evaporating the amine compound to purity the amine compound from the feed solvent.
Claims18
A process for purifying an amine compound from a feed solvent, the process comprising:
- heating the feed solvent in a single stage vertical evaporator of a reclaimer at a reduced operating pressure by feeding the evaporator with a constant amount of thermal energy;
- evaporating the amine compound to purify the amine compound from the feed solvent:
- replacing the evaporated amine compound with additional feed solvent;
- varying the operating pressure of the evaporator to maintain the evaporator at a preset temperature and to maintain the evaporation of the amine compound at a preset recovery rate:
- concentrating reclaiming waste in a waste collector of the vertical evaporator;
- withdrawing at least a portion of the collected reclaiming waste from the evaporator when:
- a) the content of the amine compound in a vapor output from the single stage evaporator falls below a threshold level,
- b) the temperature of the evaporator reaches or exceeds a threshold temperature;
- c) the recovery rate of the amine compound falls below a threshold recovery rate;
- or
- d) any combination thereof;
- and replacing the withdrawn reclaiming waste with additional feed solvent.
9 more elements
A reclaiming system for purifying an amine compound from a feed solvent, the system comprising:
- a single stage vertical solvent evaporator unit for separating the amine compound from the added solvent by evaporation, the vertical evaporator unit comprising:
- an inlet for feed solvent;
- an evaporator vessel in fluid communication with the inlet:
- a heater for providing thermal energy to the evaporator unit at a constant rate;
- a waste collector for collecting reclaiming waste;
- and a liquid outlet in fluid communication with the waste collector to remove collected reclaiming waste from the reclaiming system:
- a vacuum pump for reducing the operating pressure of the reclaiming system;
- a condenser unit in fluid communication with the evaporator unit and for accepting the separated amine compound from the solvent evaporator unit;
- and
- a liquid/gas separator unit in fluid communication with the condenser unit to separate the condensed amine compound from non-condensable gases, providing a purified amine compound.
7 more elements
A reclaiming system for purifying an amine compound from a feed solvent, the system comprising:
- a single stage vertical solvent evaporator unit for separating the amine compound from the added solvent by evaporation, the vertical evaporator unit comprising:
- an inlet for the feed solvent;
- a vertical evaporator vessel in fluid communication with the inlet and comprising a first waste collector for collecting reclaiming waste;
- a vertical sidearm heater providing thermal energy to the solvent evaporator unit at a constant rate, the vertical sidearm heater in fluid communication with the evaporator vessel and comprising a second waste collector for collecting reclaiming waste;
- and
- at least one liquid outlet in fluid communication with the first and second waste collectors to remove the collected reclaiming waste from the reclaiming system;
- a vacuum pump reducing the operating pressure of the reclaiming system;
- a condenser unit in fluid communication with the vertical evaporator unit and accepting the separated amine compound from the solvent evaporator unit;
- and
- a liquid/gas separator unit in fluid communication with the condenser unit to separate the condensed amine compound from non-condensable gases, providing a purified amine compound.
7 more elements
Dependencies are inferred from the claim text.