公开(公告)号：WO2021248077A1

公开(公告)日：2021-12-09

申请号：PCT/US2021/036018

申请日：2021-06-04

申请人： ARCHER DANIELS MIDLAND COMPANY

发明人： MA, Chi-Cheng ,  BRAZDIL, James ,  LUO, Hao

IPC分类号： B01D11/04 ,  C02F1/26 ,  C02F1/66 ,  C07C303/02 ,  C07C303/24

摘要： A process comprises continuously adding a first stream and a second stream to a sulfonation vessel, wherein the first stream comprises aminoethanol sulfate ester (AES) and the second stream comprises an aqueous solution of sodium sulfite (Na2SO3). The process comprises continuously mixing the AES and the aqueous solution of Na2SO3 in the sulfonation vessel, thus producing a mixture. The process comprises continuously subjecting the mixture to heat in the presence of an inert gas, thus converting the AES to the taurine via sulfonation. In an aspect, the AES has a residence time of no more than four hours in the sulfonation vessel. In an aspect the heating step is conducted at a temperature of at least 115° C and a pressure of at least 200 psi.

公开(公告)号：WO2021195000A1

公开(公告)日：2021-09-30

申请号：PCT/US2021/023539

申请日：2021-03-22

申请人： ARCHER DANIELS MIDLAND COMPANY

发明人： MA, Chi-Cheng ,  BRAZDIL, James ,  LUO, Hao

IPC分类号： C07C303/02 ,  C07C303/28 ,  C07C303/42

摘要： A process for producing taurine, comprising mixing aminoethanol sulfate ester (AES) and a carbon dioxide, thus producing a reaction mixture, and heating the reaction mixture in the presence of a sulfite or a bisulfite, or combination thereof, such that taurine is formed.

公开(公告)号：WO2021258005A1

公开(公告)日：2021-12-23

申请号：PCT/US2021/038112

申请日：2021-06-18

申请人： ARCHER DANIELS MIDLAND COMPANY

发明人： MA, Chi-Cheng ,  BRAZDIL, James ,  LUO, Hao

IPC分类号： C12N15/52

摘要： A process is described for forming taurine, which comprises reacting monoethanolamine with sulfuric acid to provide an 2-aminoethanol hydrogen sulfate ester product, combining the 2-aminoethanol hydrogen sulfate ester product with at least one of carbon dioxide, a carbonate or bicarbonate and with at least one of a sulfite or bisulfite to form a sulfonation reaction mixture, and heating the sulfonation reaction mixture for a sufficient time to form a taurine product therefrom. The efficiency of the sulfonation step is improved sufficiently to enable a continuous process for making taurine, particularly with at least some concurrent water removal in the first, esterification step to facilitate full conversion of the monoethanolamine to the desired 2-aminoethanol hydrogen sulfate ester intermediate.