公开(公告)号：US20240216862A1

公开(公告)日：2024-07-04

申请号：US18271877

申请日：2022-01-05

Applicant: BASF SE

Inventor： Andreas WÖLFERT ,  Michael LORENZ ,  Gerrit WATERS ,  Marcus REBLE ,  Holger FRIEDRICH ,  Andreas WEICKGENANNT ,  Wolfgang GMEINER

IPC: B01D53/86 ,  B01D53/34

CPC classification number: B01D53/8625 ,  B01D53/343 ,  B01D53/8696 ,  B01D2257/402

Abstract: The invention relates on a process for working-up a nitrous oxide comprising off-gas stream from a production process of adipic acid by decomposing the nitrous oxide contained in the off-gas stream into nitrogen and oxygen in a fixed bed reactor (21) of a N2O decomposition unit (9) at a temperature in the range from 430 to 800° C. to obtain a purified gas, wherein for controlling the N2O decomposition unit (9) a nonlinear model predictive control is used which is based on a reactor model of the fixed bed reactor based on equations of energy transport and species transport for nitrogen, oxygen and N2O.

公开(公告)号：US20170217874A1

公开(公告)日：2017-08-03

申请号：US15125850

申请日：2015-03-11

Applicant: BASF SE

Inventor： Hermann LUYKEN ,  Stephanie JAEGLI ,  Michael LORENZ ,  Gordon BRASCHE ,  Markus JEGELKA ,  Barbara BECKER ,  Robert BAUMANN ,  Johann-Peter MELDER ,  Boris BUSCHHAUS ,  Thomas KRUG

IPC: C07C209/84

CPC classification number: C07C209/84 ,  C07C209/16 ,  C07C209/48 ,  C07C213/04 ,  C07C253/08 ,  C07C253/30 ,  C07C211/10 ,  C07C255/16 ,  C07C255/25 ,  C07C215/08

Abstract: The present invention relates to a process for purifying ethylenediamine (EDA) by distillation, wherein the process comprises the steps a) and b). In step a), a mixture (G1) comprising water, EDA and N-methylethylenediamine (N-MeEDA) is fed into a distillation apparatus (D1), and the major part of the water comprised in the mixture (G1) is separated off overhead at a pressure of greater than 4.8 bara. From the bottom of (D1), the water-enriched mixture (G2) is fed into a distillation apparatus (D2) in step b). At the top of (D2), the major part of the N-MeEDA is distilled off. The stream (S3) obtained from the bottom of (D2) comprises EDA, with the components water and N-MeEDA comprised in the mixture (G1) having been largely or completely removed. Further distillation steps can optionally be carried out in order to obtain pure EDA, for example when diethylenetriamine (DETA) is additionally comprised in the mixture (G1). If ammonia is additionally comprised in the mixture (G1), an ammonia removal is preferably additionally carried out before carrying out the step a) in the process of the invention.

公开(公告)号：US20180208550A1

公开(公告)日：2018-07-26

申请号：US15746151

申请日：2016-07-20

Applicant: BASF SE

Inventor： Klaus BREUER ,  Robert BAUMANN ,  Alexander PANCHENKO ,  Michael LORENZ ,  Frank HETTCHE ,  Norbert GUTFRUCHT ,  Thomas FENLON

IPC: C07C263/10

CPC classification number: C07C263/10 ,  C07B2200/09 ,  C07C2601/14 ,  C07C265/14

Abstract: The present invention relates to a process for preparing a cyclic isocyanate (B) from a composition (Z) which comprises at least one component (A) which has at least one cycloalkane ring having at least 4 ring carbons, where the cycloalkane ring has two NH2 groups in β or γ positions relative to one another as substituents and in more than 50 mol % of the total amount of component (A) the two NH2 groups in β or in γ positions relative to one another assume a trans configuration relative to one another. This composition (Z) is, in the process of the invention, reacted with phosgene to give a composition (ZP) which comprises at least one cyclic isocyanate (B) having isocyanate groups.In addition, the invention relates to the use of the isocyanate mixture (M) as monomer in processes for preparing polymers, in particular for preparing polyurethanes and polyureas.

公开(公告)号：US20240216861A1

公开(公告)日：2024-07-04

申请号：US18271875

申请日：2022-01-05

Applicant: BASF SE

Inventor： Andreas WOELFERT ,  Michael LORENZ ,  Gerrit WATERS ,  Marcu REBLE ,  Holger FRIEDRICH ,  Andreas WEICKGENANNT ,  Wolfgang GMEINER

IPC: B01D53/86 ,  B01D53/34

CPC classification number: B01D53/8625 ,  B01D53/343 ,  B01D53/8696 ,  B01D2257/402

Abstract: The invention relates to a process for decomposing nitrous oxide from a gas stream (1). comprising: (a) heating the gas stream (1) and splitting the gas stream (1) into at least two partial streams (3, 5) or splitting the gas stream (1) into at least two partial streams (3, 5) and heating the partial streams (3, 5): (b) feeding each of the partial streams (3, 5) into a separate decomposition reactor, wherein each reactor (31) comprises a catalyst: (c) decomposing the nitrous oxide into nitrogen and oxygen in the decomposition reactors to obtain purified streams (13, 15): (d) optionally feeding each purified stream (13, 15) into a unit (11) for decomposing nitrogen dioxide and/or nitrogen monoxide or combining at least two purified streams (13, 15) and feeding the combined purified streams into a unit (11) for decomposing nitrogen dioxide and/or nitrogen monoxide, wherein the catalysts of the decomposition reactors (31) are changed alternatingly and wherein one of the catalysts is changed when the arithmetic mean of the lifetime of the catalysts in the other reactors has reached 25 to 75% of the lifetime of one catalyst.

公开(公告)号：US20180305210A1

公开(公告)日：2018-10-25

申请号：US15779347

申请日：2016-11-18

Applicant: BASF SE

Inventor： Gerhard OLBERT ,  Jochen GAUER ,  Holger FRIEDRICH ,  Andreas SPIEGEL ,  Andreas WÖLFERT ,  Wolfgang GMEINER ,  Michael LORENZ

IPC: C01B21/28 ,  C01B21/38 ,  B01J10/00 ,  B01J19/24

CPC classification number: C01B21/28 ,  B01J10/007 ,  B01J19/2485 ,  C01B21/26 ,  C01B21/38

Abstract: The present invention relates to a reactor R with apparatus D, the latter comprising a gas- and/or liquid-permeable tray B, in the edge region of which there is disposed a lateral boundary W which fully encloses the tray B and forms a volume V comprising catalytic and/or noncatalytic shaped bodies (F), wherein there is at least one braid made of precious metal and/or base metal on the upstream side opposite the tray B, and the catalytic and/or noncatalytic shaped bodies (F) are selected from (i) shaped bodies (F1) in the form of straight prisms, the footprint of which is selected from triangle, rectangle, hexagon or fragments of these polygons, and (ii) a combination of the shaped bodies (F1) with shaped bodies (F2) that are smaller than the shaped bodies (F1), wherein groups of m to n shaped bodies (F1), m and n being an integer from 3 to 30 with n>m, are framed in a metal cassette open in the upstream direction and closed in the downstream direction by a gas-permeable tray, in a virtually seamless manner with side face to side face and with their longitudinal axis aligned in vertical direction, virtually completely covering the cross section of the tray, to form modules (M), and the modules (M), optionally with cooperation of a joint filler material, with vertical alignment of the longitudinal axis of the shaped bodies (F1), are joined to one another virtually seamlessly in a mosaic-like manner such

公开(公告)号：US20180118671A1

公开(公告)日：2018-05-03

申请号：US15575828

申请日：2016-05-18

Applicant: BASF SE

Inventor： Sophie MAITRO-VOGEL ,  Michael LORENZ ,  Tobias URBAN ,  Silke Annika KOEHLER

IPC: C07C309/10 ,  C07C303/32 ,  C25D3/22 ,  C25D3/38 ,  C25D3/32 ,  C25D3/12 ,  C25D3/10 ,  C25D3/56

CPC classification number: C07C309/10 ,  C07C303/32 ,  C11D1/00 ,  C25D3/04 ,  C25D3/10 ,  C25D3/12 ,  C25D3/22 ,  C25D3/32 ,  C25D3/38 ,  C25D3/56 ,  C25D3/565

Abstract: The present invention relates to beta-naphthol ether sulfonic acids or salts thereof having the general formula (I) R—O-(AO)n—CH2—CH2—S(O)3M (I), where R, AO, n and M have the definitions stated in the claims and in the description, to mixtures thereof, to aqueous solutions and to electrolytes comprising them, to processes for preparing them and to the use of these.

公开(公告)号：US20180009742A1

公开(公告)日：2018-01-11

申请号：US15546871

申请日：2016-01-22

Applicant: BASF SE

Inventor： Michael LORENZ ,  Axel FRANZKE ,  Robert BAUMANN ,  Michael BOCK ,  Geert JANSSENS

IPC: C07C263/04 ,  C07C265/14 ,  C07C269/04 ,  C07C271/28 ,  C08G18/76 ,  G01R33/46

CPC classification number: C07C263/04 ,  C07C265/14 ,  C07C269/04 ,  C07C271/28 ,  C08G18/7692 ,  G01R33/46

Abstract: The invention relates to polyphenyl polymethylene polyisocyanates having an NCO number of at least 29% comprising less than 2% by weight ureas, less than 8% by weight carbodiimides or uretonimines and less than 1000 ppm organic chlorine compounds.The polyphenyl polymethylene polyisocyanates can be prepared according to the invention by reacting (i) polyphenyl polymethylene polyamines with organic carbonates to give the corresponding polyphenyl polymethylene polycarbamates, (ii) by thermally cleaving the polyphenyl polymethylene polycarbamates to give the polyphenyl polymethylene polyisocyanates, wherein, prior to the thermal cleavage, the free amino groups or urea groups present in the carhamate crude mixture comprising the polyphenyl polymethylene polycarbamates are reacted with a derivatizing reagent to give amide groups or urethane groups. The polyphenyl polymethylene polyisocyanates can further be prepared according to the invention, prior to the thermal cleavage, by removing compounds having free amino groups or urea groups present in the carbamate crude mixture from the carbamate crude mixture by filtration of the carbamate crude mixture comprising the polyphenyl polymethylene polycarbamates over a solid acidic adsorbent in the presence of an acid dissolved in the carbamate crude mixture.

公开(公告)号：US20160009633A1

公开(公告)日：2016-01-14

申请号：US14771409

申请日：2014-02-12

Applicant: BASF SE

Inventor： Hermann LUYKEN ,  Stephanie JAEGLI ,  Michael LORENZ ,  Gordon BRASCHE ,  Markus JEGELKA ,  Barbara BECKER ,  Robert BAUMANN ,  Johann-Peter MELDER ,  Boris BUSCHHAUS ,  Thomas KRUG

IPC: C07C209/48 ,  C07C253/00 ,  C07C253/30

CPC classification number: C07C209/48 ,  C07C209/86 ,  C07C253/00 ,  C07C253/08 ,  C07C253/30 ,  C07C255/12 ,  C07C255/25 ,  C07C211/10

Abstract: The present invention relates to a process for preparing ethylenediamine (EDA), where the process comprises the steps a) to c). In step a), formaldehyde is reacted with hydrocyanic acid (HCN) to form formaldehyde cyanohydrin (FACH), where the hydrocyanic acid is completely free or largely free of sulfur dioxide (SO2). The FACH prepared in this way is reacted with ammonia (NH3) to form aminoacetonitrile (AAN) in step b), whereupon a hydrogenation of AAN in the presence of a catalyst to form EDA is carried out in step c).

Abstract translation: 本发明涉及一种制备乙二胺（EDA）的方法，其中该方法包括步骤a）至c）。 在步骤a）中，甲醛与氢氰酸（HCN）反应形成甲醛氰醇（FACH），其中氢氰酸完全游离或大部分不含二氧化硫（SO2）。 在步骤b）中，以这种方式制备的FACH与氨（NH 3）反应形成氨基乙腈（AAN），于是在催化剂存在下形成EDA的AAN的氢化在步骤c）中进行。