公开(公告)号：CA2439883A1

公开(公告)日：2002-09-26

申请号：CA2439883

申请日：2002-03-06

Applicant: STALEY MFG CO A E

Inventor： KOVACS ISTVAN ,  COCKREM MICHAEL CHARLES MILNER

IPC: B01D3/36 ,  C07C51/46 ,  C07C231/24 ,  C07C235/06 ,  B01D3/10 ,  C07C59/06 ,  C07C59/08 ,  C07C59/10 ,  B01D3/16 ,  B01D3/38 ,  C07C51/48 ,  C07C69/68

Abstract: A method for the recovery of at least one of an organic acid or an organic acid amide, such as heat stable lactic acid or lactamide, from a feedstream (1) including mixing said feedstream that comprises the organic acid and/or organic acid amide with at least one azeotroping agent (2) in reactor (3). T he azeotroping agent is a hydrocarbon capable of forming at least one heteroazeotrope with the organic acid or the organic acid amide. The mixture is heated to produce a vapor stream (11) and the vapor stream is further heated to separate components or it can be condensed in condenser (12) into a liquid stream. The liquid stream is capable of being separated into a first phase (18) and a second phase (17). The liquid stream can be further distill ed or, alternatively, the two phases of the liquid stream can be separated. The first phase can be separated from the remainder of the liquid stream resulti ng in recovery of the organic acid and/or organic acid amide. The recovered organic acid and/or organic acid amide can be further purified and/or concentrated from the separated first phase.

公开(公告)号：AU1623700A

公开(公告)日：2000-06-13

申请号：AU1623700

申请日：1999-11-16

Applicant: STALEY MFG CO A E

Inventor： COCKREM MICHAEL CHARLES MILNER

IPC: C07C67/08 ,  C07B53/00 ,  C07B61/00 ,  C07C67/54 ,  C07C69/68 ,  C07C67/00 ,  C12P7/00 ,  C12P7/62 ,  C12P7/46

Abstract: A process for producing an ester comprises the steps of: (a) feeding to a first vessel a feed that comprises organic acid, alcohol, and water, whereby organic acid and alcohol react to form monomeric ester and water, and whereby a first liquid effluent is produced that comprises as its components at least some ester, alcohol, and water, the components of the first liquid effluent being substantially in reaction equilibrium; and (b) feeding the first liquid effluent to a second vessel, whereby a vapor product stream and a second liquid effluent stream are produced, the vapor stream comprising ester, alcohol, and water, wherein the second vessel is maintained substantially at vapor-liquid equilibrium but not substantially at reaction equilibrium.

公开(公告)号：CA2347689A1

公开(公告)日：2000-06-02

申请号：CA2347689

申请日：1999-11-16

Applicant: STALEY MFG CO A E

Inventor： COCKREM MICHAEL CHARLES MILNER

IPC: C07C67/08 ,  C07B53/00 ,  C07B61/00 ,  C07C67/54 ,  C07C69/68 ,  C07C67/00 ,  C12P7/00 ,  C12P7/46 ,  C12P7/62

Abstract: A process for producing an ester comprises the steps of: (a) feeding to a first vessel a feed that comprises organic acid, alcohol, and water, whereby organic acid and alcohol react to form monomeric ester and water, and whereb y a first liquid effluent is produced that comprises as its components at leas t some ester, alcohol, and water, the components of the first liquid effluent being substantially in reaction equilibrium; and (b) feeding the first liqui d effluent to a second vessel, whereby a vapor product stream and a second liquid effluent stream are produced, the vapour stream comprising ester, alcohol, and water, wherein the second vessel is maintained substantially at vapor-liquid equilibrium but not substantially at reaction equilibrium.