Dow Global Technolgoies LLC

Dow Global Technologies Llcmi

Amanda M Goodman

Christophe R Laroche

John R Dowdle

Zubin B Kuvadia

Barry Archer

Jianping Zeng

Simone T Lazar

Diego E Cristancho

An aqueous absorption medium for removal of acid gases from a gaseous stream includes at least one tertiary alkanolamine and at least one secondary alkanolamine. A total weight of the at least one tertiary alkanolamine and the at least one secondary alkanolamine account for an amine weight of the aqueous absorption medium. The amine weight of the aqueous absorption medium is from 25 wt % to 65 wt %, based on a total weight of the aqueous absorption medium, and the at least one secondary alkanolamine is present in an amount from 11 wt % to 45 wt %, based on the amine weight of the aqueous absorption medium.

Aqueous absorption medium for removal of acid gases

Embodiments relate to a continuous process for the production of hydroxyethylpiperazine that includes feeding neat piperazine, recycled piperazine, and ethylene oxide to a reactor to form crude hydroxyethylpiperazine, in which the reactor is a continuous stirred tank reactor or a plug flow reactor. The process further includes continuously feeding the crude hydroxyethylpiperazine from the reactor to a distillation system that includes at least one distillation column, the distillation system produces at least a recycled piperazine stream and a hydroxyethylpiperazine stream, the recycled piperazine stream includes the recycled piperazine that is fed to the reactor to form the crude hydroxyethylpiperazine, and the hydroxyethylpiperazine stream includes at least 60 wt % of hydroxyethylpiperazine based on a total weight of the hydroxyethylpiperazine stream.

Production of hydroxyethylpiperazine

Growing community of inventors

Missouri City, TX, United States of America

Amanda M Goodman