公开(公告)号：DE59305568D1

公开(公告)日：1997-04-10

申请号：DE59305568

申请日：1993-07-05

Applicant: LINDE AG ,  BASF AG ,  GST SYST ABSCHEIDE STEUERTECH

Inventor： BOELT HEINZ DIPL ING ,  WALSER FRANZ DIPL ING ,  WUNSCH GERD DR ,  STABEL UWE DR ,  SCHOENEBORN AXEL

IPC: B01D46/00 ,  B01D45/12 ,  B01D50/00

Abstract: The invention relates to a process and a separation system for removing particles, in particular soot particles, from particle-containing process gas streams occurring in chemical or petrochemical plants. According to the invention, the particle removal is carried out in a partly thermally regenerable separation system. The particles are advantageously removed from the gas stream in a two-stage separation system, the first stage being composed of centrifugal separators, preferably multicyclones, and the second stage being composed of fine filters made of sintered metals, preferably of ferritic sintered metals. For the regeneration, the temperature is increased to a value above the ignition temperature of soot and, if required, an oxygen-containing auxiliary gas is added. The regeneration is preferably carried out periodically.

公开(公告)号：MX9304244A

公开(公告)日：1994-05-31

申请号：MX9304244

申请日：1993-07-14

Applicant: LINDE AG ,  BASF AG ,  GST SYST ABSCHEIDE STEUERTECH

Inventor： BOELT HEINZ DIPL ING ,  WALSER FRANZ DIPL ING ,  WUNSCH GERD DR ,  STABEL UWE DR ,  SCHOENEBORN AXEL

IPC: B01D46/00 ,  B01D45/12 ,  B01D50/00

Abstract: The invention relates to a process and a separation system for removing particles, in particular soot particles, from particle-containing process gas streams occurring in chemical or petrochemical plants. According to the invention, the particle removal is carried out in a partly thermally regenerable separation system. The particles are advantageously removed from the gas stream in a two-stage separation system, the first stage being composed of centrifugal separators, preferably multicyclones, and the second stage being composed of fine filters made of sintered metals, preferably of ferritic sintered metals. For the regeneration, the temperature is increased to a value above the ignition temperature of soot and, if required, an oxygen-containing auxiliary gas is added. The regeneration is preferably carried out periodically.

公开(公告)号：DE4242054C1

公开(公告)日：1994-01-13

申请号：DE4242054

申请日：1992-12-14

Applicant: BASF AG

Inventor： STABEL UWE DR ,  WUNSCH GERD DR ,  WOERZ HELMUT DR ,  FRIED ANDREAS DR ,  KOTKAMP RUEDIGER DR

IPC: C07C7/00 ,  C07C7/04 ,  C07C13/465 ,  C07C15/44 ,  C07C15/46 ,  C08J11/14 ,  C08L25/02 ,  C10G7/00 ,  C10G9/00 ,  C10G70/04

Abstract: In a process for the recovery of a polymerizable useful fraction, consisting of styrene, methylstyrenes, vinyltoluenes, indene, methylindenes and fractions whose boiling points are between styrene and methylindenes, from the crack gases of a steam cracker, the sidestream of the crack gas column is divided, by means of a distillation unit, into the useful fraction and into fractions which are recycled to the crack gas column.

公开(公告)号：DE2716032A1

公开(公告)日：1978-10-26

申请号：DE2716032

申请日：1977-04-09

Applicant: BASF AG

Inventor： OSTERTAG WERNDER DR ,  WUNSCH GERD DR ,  KIENER VOLKER DR ,  HETZEL ECKHARD DIPL ING ,  SCHREINER SIEGFRIED DR ,  LEUTNER BERND DR ,  SCHLIMPER HANS-ULRICH DR ,  VOELKL ERFRIED DR

IPC: C01B17/66 ,  C07C51/00 ,  C07C53/06 ,  C07C67/00

Abstract: In a process for the manufacture of sodium dithionite by reacting sulfur dioxide with sodium formate and aqueous sodium hydroxide solution in the presence of methanol, an aqueous methanolic solution of sodium formate is first produced by reacting carbon monoxide with sodium hydroxide solution in an aqueous medium, containing from 1 to 50% by weight of methanol, based on the amount of water, at from 80 to 120 DEG C. under a pressure of from 10 to 40 bars. The resulting aqueous methanolic solution can be reacted directly, in the conventional manner, with sulfur dioxide and aqueous sodium hydroxide solution to give sodium dithionite.

公开(公告)号：DE2442418A1

公开(公告)日：1976-03-18

申请号：DE2442418

申请日：1974-09-05

Applicant: BASF AG

Inventor： VOELKL ERFRIED DR ,  SCHREINER SIEGFRIED DR ,  WUNSCH GERD DR ,  KIENER VOLKER DR ,  KOESTER HARTWIG DR ,  WAIBEL RUDI DIPL ING DR

IPC: C01B31/26 ,  C01B17/66

公开(公告)号：DE2434096A1

公开(公告)日：1976-02-05

申请号：DE2434096

申请日：1974-07-16

Applicant: BASF AG

Inventor： SCHNEEHAGE HENNING DR ,  WUNSCH GERD DR ,  KOESTER EBERHARD DR ,  SCHOENAFINGER EDUARD DR

IPC: B22F9/22 ,  C09C1/62 ,  H01F1/06 ,  G11B5/62

Abstract: A process for the manufacture of acicular ferromagnetic metal pigments containing iron, having a reduced field strength distribution and a steeper residual magnetization curve, by applying equivalent amounts of an alkaline earth metal cation and of a monobasic, dibasic or tribasic aliphatic carboxylic acid of up to 6 carbon atoms onto appropriate acicular iron oxides and then reducing the treated oxides.

公开(公告)号：DE2302512A1

公开(公告)日：1974-07-25

申请号：DE2302512

申请日：1973-01-19

Applicant: BASF AG

Inventor： WUNSCH GERD DR ,  KIENER VOLKER DR

IPC: C01B21/098 ,  C01B25/10

Abstract: is introduced into a soln in an inert organic solvent of PBr5 and/or PBr3 and Br at 0.6 1/min per gram atom of P i n the soln. During the reaction an excess of Br of 2-50 wt.% over the required theoretical for PBr5 formation is maintained and introduction of NH3 is kept up until at least the stoichiometric quantity for the reaction has been added and the (NPBr2)3 isolated from the reaction mixt. Prod. is used in semiconductor mfre.

公开(公告)号：DE2245079A1

公开(公告)日：1974-04-04

申请号：DE2245079

申请日：1972-09-14

Applicant: BASF AG

Inventor： POHLEMANN HEINZ DR ,  WURMB ROLF DR ,  SCHWARZ WOLFGANG DR ,  WUNSCH GERD DR ,  KIENER VOLKER DR ,  ZEIDLER ADOLF DR ,  SCHARF BERNHARD DR

IPC: C08G79/025 ,  C08L85/02 ,  D01F2/10 ,  D01F3/10

公开(公告)号：DE2139691A1

公开(公告)日：1973-02-15

申请号：DE2139691

申请日：1971-08-07

Applicant: BASF AG

Inventor： ADOLPHI HEINRICH DR ,  BEWERT WOLFGANG DR ,  KIENER VOLKER DR ,  WUNSCH GERD DR

IPC: C07F9/6581 ,  C07D109/00

公开(公告)号：DE2134019A1

公开(公告)日：1973-01-25

申请号：DE2134019

申请日：1971-07-08

Applicant: BASF AG

Inventor： WUNSCH GERD DR ,  BEWERT WOLFGANG DR ,  KIENER VOLKER DR ,  ADOLPHI HEINRICH DR

IPC: C07F9/24 ,  C07F9/26

Abstract: Cpds. of formula (I):- (R)3P=N- P(R)2=N nP(X)(R2) (I), (where X is O or S; each R is halogen, 1-4C alkoxy; NR2R3 in which where R2 is H or 1-4C alkyl, and R3 is 1-6C alkyl or phenyl opt. substd. by halogen or NO2, or R4R5P(X1)S- (in which X1 is O or S, and R4 and R5 are 1-4C alkoxy; n = 0,1 or 2; >=1 R is R3R5P(X1)S or NR2R3, and the no. of same substituents R is =2n + 4) are insecticides. (I) are pref. prepd. by reacting (I; R = Cl) with a 1-4C alkanol, HNR2R3 and/or R4R5P(X1)SM (where M is NH4, tetraalkylammonium, Na, K or 1/2 equiv. of an alkaline earth metal).