公开(公告)号：DE102004060321A1

公开(公告)日：2006-06-22

申请号：DE102004060321

申请日：2004-12-15

Applicant: BASF AG

Inventor： MUELLER CHRISTIAN ,  WEBER MARKUS ,  STROEFER ECKHARD

IPC: C07C319/00 ,  B01D53/52 ,  C07C319/04 ,  C07C321/00 ,  C07C321/04 ,  C07C321/14

Abstract: Preparing sulfur-containing compounds comprises reacting a mixed gas stream comprising hydrogen sulfide, optionally with oxygen, with linear or branched 1-30C olefins and carrying out the reaction in the presence of water and carbon dioxide at a pressure of 2-325 bar. Preparing sulfur-containing compounds of formula R 1>-Q-R 2> comprises reacting a mixed gas stream comprising hydrogen sulfide, optionally with oxygen, with linear or branched 1-30C olefins and carrying out the reaction in the presence of water and carbon dioxide at a pressure of 2-325 bar. Q : -S- or -S-S-; R 1>, R 2>H or optionally saturated, linear or branched 1-30C alkyl. R 1> and R 2> are not simultaneously H.

公开(公告)号：DE102004058707A1

公开(公告)日：2006-06-08

申请号：DE102004058707

申请日：2004-12-06

Applicant: BASF AG

Inventor： LANG NEVEN ,  STAMMER ACHIM ,  STROEFER ECKHARD ,  SIEGERT MARKUS

IPC: C07D323/06

公开(公告)号：DE102004040284A1

公开(公告)日：2006-02-23

申请号：DE102004040284

申请日：2004-08-19

Applicant: BASF AG

Inventor： SIEGERT MARKUS ,  LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN

IPC: B01D3/14 ,  C07D323/06

Abstract: The present invention relates to a process for distillatively removing pure trioxane from a feedstream (I) comprising trioxane in a proportion of at least 50% by weight, based on the total weight of the feedstream (I), and additionally formaldehyde and water, which comprises feeding the feedstream I and a further aqueous stream (II) which does not contain any components extraneous to the feedstream to a dividing wall column (TWK 1 ) having a dividing wall TW which is arranged substantially perpendicularly and divides the column interior into a feed region (A 1 ), a withdrawal reaction (B 1 ), an upper combined column region (C 1 ) and a lower combined column region (D 1 ), and drawing off from the first dividing wall column (TWK 1 ) a bottom stream (III) comprising pure trioxane and a sidestream (IV) at the withdrawal region (B 1 ), comprising pure water.

公开(公告)号：NO20054345A

公开(公告)日：2005-09-26

申请号：NO20054345

申请日：2005-09-20

Applicant: BASF AG

Inventor： HASSE HANS ,  STROEFER ECKHARD ,  GRUETZNER THOMAS

IPC: C07C45/78 ,  C07C45/82 ,  C07C47/058

CPC classification number: C07C45/78 ,  C07C45/82 ,  C07C47/04

公开(公告)号：DE50203849D1

公开(公告)日：2005-09-08

申请号：DE50203849

申请日：2002-02-15

Applicant: BASF AG

Inventor： BREDEHOEFT JAN PETER ,  PALLASCH HANS-JUERGEN ,  HECK E ,  STROEFER ECKHARD

IPC: B01D1/30 ,  B01D3/32 ,  B60P1/28 ,  C07C263/10 ,  C07C265/14 ,  B01D3/00

Abstract: An arrangement for carrying out chemical reactions comprises at least one distillation column and/or at least one container and at least one circulation evaporator, which are connected to one another via connecting elements, liquid being taken off completely or partly from a tray or from a stacked packing bed or from a dumped packing bed or from a liquid collector of the distillation column or being fed as an external feed stream below the lower tube sheet of the circulation evaporator to said evaporator.

公开(公告)号：DE10361519A1

公开(公告)日：2005-07-28

申请号：DE10361519

申请日：2003-12-23

Applicant: BASF AG

Inventor： OLBERT GERHARD ,  METELKINA OLGA ,  SESING MARTIN ,  STROEFER ECKHARD ,  FIENE MARTIN

IPC: B01J8/02 ,  B01J8/04 ,  B01J19/24 ,  C01B7/04 ,  C07C17/02 ,  F28D9/00

Abstract: A process for preparing chlorine by gas-phase oxidation of hydrogen chloride by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst, wherein the process is carried out in a reactor ( 1 ) having heat-exchange plates ( 2 ) which are arranged in the longitudinal direction of the reactor ( 1 ) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities ( 3, 4 ) for the heat transfer medium to the heat-exchange plates ( 2 ) and also gaps ( 5 ) between the heat-exchange plates ( 2 ) in which the fixed-bed catalyst is present and into which the hydrogen chloride and the gas stream comprising molecular oxygen are passed, is described.

公开(公告)号：DE10361518A1

公开(公告)日：2005-07-28

申请号：DE10361518

申请日：2003-12-23

Applicant: BASF AG

Inventor： LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  SIEGERT MARKUS ,  OTT MICHAEL ,  HASSE HANS ,  GRUETZNER THOMAS ,  BLAGOV SERGEJ

IPC: B01D3/14 ,  B01D3/36 ,  C07D323/06

Abstract: A process for removing trioxane from a mixture I of formaldehyde, trioxane and water, by a) distilling the mixture I in a first distillation stage at a pressure of from 0.1 to 2 bar to obtain a stream II which comprises formaldehyde and a stream III which comprises predominantly trioxane and additionally water and formaldehyde, b) mixing the stream III with a recycle stream VII which comprises predominantly trioxane and additionally water and formaldehyde to obtain a stream IIIa which comprises predominantly trioxane and additionally water and formaldehyde, c) distilling the stream IIIa, if appropriate after removing low boilers from the stream III or IIIa in a further distillation stage, in a second distillation stage at a pressure of from 0.2 to 10 bar, the pressure in the second distillation stage being at least 0.1 bar higher than the pressure in the first distillation stage, to obtain a stream IV of trioxane and a stream V which comprises predominantly trioxane and additionally water and formaldehyde, d) distilling the stream V in a third distillation stage at a pressure of from 0.1 to 4 bar to obtain a stream VI which comprises predominantly water and additionally formaldehyde, and the recycle stream VII which comprises predominantly trioxane and additionally water and formaldehyde, e) if appropriate, distilling the stream VI in a fourth distillation stage to obtain a stream VIII which comprises predominantly water, and a stream IX which comprises predominantly formaldehyde.

公开(公告)号：CA2549897A1

公开(公告)日：2005-07-14

申请号：CA2549897

申请日：2004-12-21

Applicant: BASF AG

Inventor： LANG NEVEN ,  SIEGERT MARKUS ,  STAMMER ACHIM ,  STROEFER ECKHARD ,  FRIESE THORSTEN ,  HASSE HANS

IPC: C07D323/06

Abstract: The invention relates to a method for separating trioxane from an inlet flow (I) consisting of formaldehyde, trioxane and water.Said method consists in a ) preparing an inlet flow (I), which contains formaldehyde as the main compone nt and trioxane and water as auxiliary components, b) mixing the inlet flow (I) with a return flow (VII) containing trioxane as the main component and formaldehyde and water as auxiliary components. An inlet flow (Ia), which contains formaldehyde as the main component and trioxane and water as the auxiliary components, is obtained. Said method also consists in c) distillin g the inlet flow (Ia) in a first distillation step at a pressure of between 0. 1 2.5 bars, thus enabling a flow (II), which contains formaldehyde as the main component and water as the auxiliary component, and a flow (III), which contains trioxane as the main component and water and formaldehyde as the auxiliary components, to be obtained, d) distilling the flow (III), optional ly after separating materials at a low-boiling point from the flow (III) in a l ow- boiling separation step and in a second distillation step at a pressure of between 0.2 17.5 bars, whereby the pressure in the second distillation step is 0.1 - 15 bars higher than the pressure in the first distillation step. A flo w (IV) is obtained which is essentially made of trioxane, and also a flow V which contains trioxane as the main component and water and formaldehyde as the auxiliary components, e) optionally mixing the flow (V) with a flow (IX) , which contains water as the main component, in order to obtain a flow (Va) having a higher water content than flow (V), whereby flow (Va) contains trioxane as the main component and water and formaldehyde as the auxiliary components, f) distilling the flow (V) and/or flow (Va) in a third in distillation step at a pressure of between 1 - 10 bars, whereby a flow (VI), which is essentially made of water, and the return flow (VII), which contain s trioxane as the main component and water and formaldehyde as the auxiliary components, are obtained.

公开(公告)号：HU0402363A2

公开(公告)日：2005-02-28

申请号：HU0402363

申请日：2002-11-05

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  SOHN MARTIN ,  HASSE HANS ,  SCHILLING KLEMENS

IPC: C07C45/86 ,  C07C31/02 ,  C07C31/20 ,  C07C45/79 ,  C07C45/82 ,  C07C47/04 ,  C07C47/058

Abstract: In an aqueous formaldehyde solution comprising formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in a total concentration x of >=65% by weight, the mean molar mass {overscore (M of the polyoxymethylene glycols is, as a function of the formaldehyde concentration, equal to or less than the values given by equation I: ( M _ g ⁢ / ⁢ mol ) = 48 + 6.589 . 10 - 1 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) + 4.725 . 10 2 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 2 - 3.434 . 10 - 3 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 3 + ⁢ 9.625 . 10 - 5 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 4 - 1.172 . 10 6 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 5 + 5.357 . 10 - 9 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 6 ( I ) where: {overscore (M is the mean molar mass, and x is the total concentration of formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in % by weight (total formaldehyde concentration).

公开(公告)号：AT284837T

公开(公告)日：2005-01-15

申请号：AT02753076

申请日：2002-07-02

Applicant: BASF AG

Inventor： WOSTBROCK KARL-HEINZ ,  STROEFER ECKHARD ,  WEBER MARKUS ,  KERTH STEFFEN

IPC: C01B21/14

Abstract: A process for preparing a salt-free aqueous hydroxylamine solution by reacting an aqueous solution of a hydroxylammonium salt with a base to give a mixture and separating from said mixture by distillation a salt-free aqueous hydroxylamine solution, involving using as a base an aqueous solution of a mixture of NaOH and KOH in a molar ratio Na + :K + in the range from 70:30 to 95:5 and with a total concentration of Na + and K + in the range from 0.1 to 10 m/m % based on the total amount of the mixture.