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 under vacuum by feeding the evaporator with a constant amount of thermal energy, wherein the single stage vertical evaporator comprises: - an inlet for the feed solvent; - a vertical evaporator vessel in fluid communication with the inlet, comprising a first waste collector for collecting reclaiming waste; - a vertical sidearm heater that provides the thermal energy to the vertical evaporator vessel at a constant rate, wherein the vertical sidearm heater is in fluid communication with the vertical evaporator vessel and comprises a second waste collector for collecting reclaiming waste; and - at least one liquid outlet in fluid communication with the first and/or second waste collectors to remove the collected reclaiming waste; evaporating the amine compound to purify the amine compound from the feed solvent; condensing the evaporated amine compound in a condenser unit that is in fluid communication with the single stage vertical evaporator; separating the condensed amine compound from non-condensable gases in a liquid/gas separator unit that is in fluid communication with the condenser unit to provide a purified amine compound, replacing the evaporated amine compound with additional feed solvent on a level control; varying the operating pressure of the evaporator using a vacuum pump to maintain the evaporator at a preset temperature, wherein the preset temperature is the temperature required to recover the amine based on its boiling point, thereby maintaining 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 while the evaporator is under vacuum 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rate of the amine compound falls below a threshold recovery rate; or d) any combination thereof; and replacing the withdrawn reclaiming waste with additional feed solvent. heating the feed solvent in a single stage vertical evaporator of a reclaimer under vacuum by feeding the evaporator with a constant amount of thermal energy, wherein the single stage vertical evaporator comprises: - an inlet for the feed solvent; - a vertical evaporator vessel in fluid communication with the inlet, comprising a first waste collector for collecting reclaiming waste; - a vertical sidearm heater that provides the thermal energy to the vertical evaporator vessel at a constant rate, wherein the vertical sidearm heater is in fluid communication with the vertical evaporator vessel and comprises a second waste collector for collecting reclaiming waste; and - at least one liquid outlet in fluid communication with the first and/or second waste collectors to remove the collected reclaiming waste; - an inlet for the feed solvent; - a vertical evaporator vessel in fluid communication with the inlet, comprising a first waste collector for collecting reclaiming waste; - a vertical sidearm heater that provides the thermal energy to the vertical evaporator vessel at a constant rate, wherein the vertical sidearm heater is in fluid communication with the vertical evaporator vessel and comprises a second waste collector for collecting reclaiming waste; and - at least one liquid outlet in fluid communication with the first and/or second waste collectors to remove the collected reclaiming waste; evaporating the amine compound to purify the amine compound from the feed solvent; condensing the evaporated amine compound in a condenser unit that is in fluid communication with the single stage vertical evaporator; separating the condensed amine compound from non-condensable gases in a liquid/gas separator unit that is in fluid communication with the condenser unit to provide a purified amine compound, replacing the evaporated amine compound with additional feed solvent on a level control; varying the operating pressure of the evaporator using a vacuum pump to maintain the evaporator at a preset temperature, wherein the preset temperature is the temperature required to recover the amine based on its boiling point, thereby maintaining 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 while the evaporator is under vacuum 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 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.