公开(公告)号：JP2000197862A

公开(公告)日：2000-07-18

申请号：JP37620699

申请日：1999-12-02

Applicant: BASF AG

Inventor： VANSANT FRANS DR ,  DE HERT JOZEF ,  KOEFFER DIETER ,  THEIS GERHARD DR ,  TERJUNG WINFRIED

IPC: B01D1/22 ,  B08B3/08 ,  B08B9/08

Abstract: PROBLEM TO BE SOLVED: To provide an apparatus dispensing with washing work probably interrupting continuous evaporation, operated effectively and inexpensively, also usable in the post-treatment of a salt-containing soln. by evaporation and capable of separating a liquid containing dissolved residue in an evaporator without generating the outflow from the bottom portion of the evaporator caused by the clogging with residue. SOLUTION: A washing apparatus for removing residue from the bottom portion outflow pipe of an evaporator generating an upper product and a bottom product and equipped with the bottom part outflow pipe has (a) an outflow container 7, (b) a collection container 8, (c) an outflow valve 10, (d) a washing water valve 11, (e) a container outflow valve 12, (f) washing outflow valve 13, a gas venting valve 14, (h) the piping 17 guided to the outflow valve 10 from the bottom part, (i) a washing agent inlet pipe 3, (j) outflow piping devices 6, 16 and the connection pipelines between the devices (a)-(j).

公开(公告)号：JP2000297055A

公开(公告)日：2000-10-24

申请号：JP37620799

申请日：1999-12-02

Applicant: BASF AG

Inventor： VANSANT FRANS DR ,  DE HERT JOZEF ,  KOEFFER DIETER ,  THEIS GERHARD DR ,  TERJUNG WINFRIED

IPC: B01D1/22 ,  C07C29/10 ,  C07C29/76 ,  C07C29/80 ,  C07C31/20

Abstract: PROBLEM TO BE SOLVED: To provide an effective and inexpensive method for recovering all possible glycol as a pure substance which has been formed in a processing operation and for isolating a corresponding mixture generally containing glycol together with salt and water as well so as for high quality products to be obtained. SOLUTION: When isolating glycol from a liquid mixture consisting of glycol, water and salt by (a) vaporizing at least part of water and glycol existing in the mixture and separating a liquid or gaseous medium not containing salt and containing glycol and water, (b) by dehydrating the medium and (c) by isolating glycol from the dehydrated medium, a film evaporator is used for conducting the process (a).

公开(公告)号：DE19855910A1

公开(公告)日：2000-06-08

申请号：DE19855910

申请日：1998-12-03

Applicant: BASF AG

Inventor： VANSANT FRANS ,  DE HERT JOZEF ,  KOEFFER DIETER ,  THEIS GERHARD ,  TERJUNG WINFRIED

IPC: B01D1/22 ,  B08B3/08 ,  B08B9/08 ,  B01D1/00 ,  B01D3/00

Abstract: The rinsing apparatus for removing residue from the sump run-off of an evaporator comprises (a) a run-off container (7), (b) a collector container (8), (c) a run-off valve (10), (d) a rinsing water valve (11), (e) run-off container valve (12), (f) rinsing run-off valve (13), (g) vent valve (14), (h) a delivery pipe (17) from the sump to the run-off valve (10), (i) a inlet pipe (3) for the rinsing agent, (j) a run-off pipe device (6,16) and a connector to the devices (a) to (j). An Independent claim is included for the use of a rinsing apparatus.

公开(公告)号：DE19855911A1

公开(公告)日：2000-06-08

申请号：DE19855911

申请日：1998-12-03

Applicant: BASF AG

Inventor： VANSANT FRANS ,  DE HERT JOZEF ,  KOEFFER DIETER ,  THEIS GERHARD ,  TERJUNG WINFRIED

IPC: B01D1/22 ,  C07C29/10 ,  C07C29/76 ,  C07C29/80 ,  C07C31/20

Abstract: Separation of glycol from a mixture of glycol, water and salt is carried out using a thin film evaporator. A process for the separation of glycols (I) from a mixture (II) of glycols, water and salt comprises: (A) evaporation of at least a partial amount of water and glycol from the mixture to form a salt free liquid or gaseous medium, (B) dewatering of the medium and (C) isolation of the glycols from the dewatered medium whereby step (A) is carried out in a thin film evaporator (35). Independent claims are included for: (i) a process for the production of glycols by catalytic conversion of ethylene with oxygen to form a reaction mixture containing ethylene oxide, subsequent processing to form a glycol, water and salt containing liquid mixture (II) and separation using the thin film evaporator (35) (ii) a thin film evaporator (35) comprising a delivery tube (20) at the head for the salt free, glycol and water containing liquid or gaseous medium, a sump discharge (21), a supply feed (51), an inlet tube (53) for a rinse medium, two inlet tubes (54,55) for inert gas, a rinse take off (56), a discharge container (57), a collection container (58), discharge valve (60), rinse water valve (61), container discharge valve (62), rinse discharge valve (63) and degassing valve (64).

公开(公告)号：CA2005139A1

公开(公告)日：1990-07-05

申请号：CA2005139

申请日：1989-12-11

Applicant: BASF AG

Inventor： BOECKH DIETER ,  SEELMANN-EGGEBERT HANS-PETER ,  HARTMANN HEINRICH ,  KOEFFER DIETER ,  TRIESELT WOLFGANG ,  KUD ALEXANDER ,  BAUR RICHARD

IPC: C08F8/00 ,  C08F222/04 ,  C11D3/37 ,  C08F222/06

Abstract: O.Z. 0050/40455 of the Disclosure: Pulverulent and liquid detergents contain (1) one or more anionic surfactants, one or more nonionic surfactants or mixtures thereof and (2) copolymers in amounts of from 0.1 to 15 % by weight preparable by copolymerization of (a) from 10 to 55 mol % of a 1,2-di-C1-C4-alkoxyethylene, (b) from 10 to 60 mol % of a monoethylenically unsatur ated dicarboxylic anhydride of from 4 to 8 carbon atoms, (c) from 0 to 60 mol % of a monoethylenically unsatur ated C3-C8-monocarboxylic acid and (d) from 0 to 20 mol % of another monoethylenically unsaturated monomer and subsequent hydrolysis of the anhydride groups of the copolymerized monomer (b) or reaction of these groups with an alcohol or an amino.