Method for removal and recovery of organic amines from a hydrocarbon stream

A method for removal and recovery of an organic amine from a hydrocarbon stream containing the amine, comprising the steps of:

• i) mixing the hydrocarbon stream containing the amine with an aqueous inorganic acid in a volumetric ratio of hydrocarbon stream:aqueous inorganic acid of greater than 1:1 to 5:1,
• ii) phase separating of hydrocarbon and aqueous phase;
• iii) removing the hydrocarbon phase and optionally further purifying thereof,
• iv) optionally recycling at least a part of the hydrocarbon phase obtained in step (iii) into mixing step (i),
• v) mixing the aqueous phase obtained in step (iii) with an aqueous alkaline solution,
• vi) phase separating of an aqueous phase and an organic phase formed, wherein volumetric ratio of organic phase to aqueous phase is greater than 1:1 to 5:1,
• vii) removing the organic phase obtained in step (vi) and optionally further purifying thereof.

A method for removal and recovery of an organic amine from a hydrocarbon stream containing the amine, comprising the steps of:

• i) mixing the hydrocarbon stream containing the amine with an aqueous inorganic acid in a volumetric ratio of hydrocarbon stream:aqueous inorganic acid of greater than 1:1 to 5:1,
• ii) phase separating of hydrocarbon and aqueous phase;
• iii) removing the hydrocarbon phase and optionally further purifying thereof,
• iv) recycling at least a part of the hydrocarbon phase obtained in step (iii) into mixing step (i),
• v) mixing the aqueous phase obtained in step (iii) with an aqueous alkaline solution,
• vi) phase separating of an aqueous phase and an organic phase formed,
• vii) removing the organic phase obtained in step (vi) and optionally further purifying thereof.