公开(公告)号：DE3061777D1

公开(公告)日：1983-03-03

申请号：DE3061777

申请日：1980-07-15

Applicant: BASF AG

Inventor： SCHULZ GERHARD DR ,  SLIWKA ARTUR DR ,  SCHIMITSCHEK HELMUT DR ,  GEBERT WOLFGANG DR

IPC: C07C4/14 ,  C07C7/04 ,  C07C7/10 ,  C07C15/02 ,  C07C15/04 ,  C10G9/00 ,  C10G55/04

公开(公告)号：DE1643672A1

公开(公告)日：1971-07-01

申请号：DE1643672

申请日：1967-10-07

Applicant: BASF AG

Inventor： BUSCHMANN KARL DR ,  RITTINGER WILHELM DR ,  SLIWKA ARTUR DR ,  NEUBERT EBERHARD DIPL-ING ,  EULITZ MANFRED DIPL-ING

IPC: C07C4/04

公开(公告)号：DE3161916D1

公开(公告)日：1984-02-23

申请号：DE3161916

申请日：1981-03-07

Applicant: BASF AG

Inventor： SLIWKA ARTUR DR

IPC: C07C4/04 ,  B08B9/02 ,  C07C1/00 ,  C07C11/04 ,  C07C67/00 ,  C10G9/16 ,  C10G9/36

Abstract: A process for the thermal decoking of cracked gas coolers for the indirect cooling, by means of water, of ethylene-containing cracked gases which are obtained by thermal cracking of hydrocarbons in the presence of steam in an indirectly heated tube cracking furnace, at cracked gas exit temperature of above 750 DEG C., in which, instead of a heated steam/air mixture, heated air, without steam, is passed through the cracked gas cooled tubes which are to be decoked.

公开(公告)号：DE1794149A1

公开(公告)日：1971-04-01

申请号：DE1794149

申请日：1968-09-14

Applicant: BASF AG

Inventor： JOHN HARALD DIPL-ING ,  LUEHDEMANN ROLF DR ,  RITTINGER WILHELM DR ,  WALTER DR SAUM ,  SLIWKA ARTUR DR

IPC: B01D53/52 ,  C07C7/11 ,  C07C7/00

Abstract: A process for the removal of CO2 and/or H2S from gases containing olefins and acetylenes by absorption in an aqueous solution of an alkali metal salt of amino acid and desorption by decompressing and heating the solvent, which comprises treating the solvent, before or after desorption, with a hydrocarbon mixture substantially consisting of benzene for the purpose of removing impurities and, after said treatment, separating the hydrocarbon mixture from the aqueous solution.

公开(公告)号：DE2525780A1

公开(公告)日：1976-12-16

申请号：DE2525780

申请日：1975-06-10

Applicant: BASF AG

Inventor： HARTERT ERWIN DR ,  SCHWARZ HANS GEORG DR ,  SLIWKA ARTUR DR

IPC: B01D53/14 ,  C07C7/11 ,  C10K1/12 ,  B01D53/16

Abstract: Removal of CO2 and/or H2S from gas made by thermal cracking of hydrocarbons comprises treatment in a absorption zone with an aq. soln. of an alkali salt of a N,N-dialkyl alpha-amino monocraboxylic acid, to which is added an alkali hydroxide and/or alkali salt of an acid with pK value of >=5. The absorbent is regenerated as usual by heating. Esp. suitable for treating ethylene-contg. gases made by thermal cracking of hydrocarbons (e.g. petrol, diesel oil or gas oil) in heated tube furnaces in presence of H2, with outlet temp. >760 degrees C (800-870 degrees C), esp. 810-860 degrees C. Life of the absorbent is extended by addn. of the alkali hydroxide or salt, which is cheaper and easier to use than known additive e.g. hydrazine or phenylhydrazine.

公开(公告)号：DE2525779A1

公开(公告)日：1976-12-16

申请号：DE2525779

申请日：1975-06-10

Applicant: BASF AG

Inventor： HARTERT ERWIN DR ,  SCHWARZ HANS GEORG DR ,  SLIWKA ARTUR DR

IPC: B01D53/14 ,  C07C7/11 ,  C10K1/12 ,  B01D53/16

Abstract: Removal of CO2 and/or H2S from ethylene-contg. gas from thermal cracking of vaporisable hydrocarbons in presence of H2 in a heated tube furnace with gas outlet temp. >760 degrees C, by washing with an aq. soln. of an alkali salt of a N,N-dialkyl alpha-amino monocarboxylic acid at 20-60 degrees C under normal elevated pressure, followed by regeneration at 95-110 degrees C, opt. after pressure release. Working life of the soln. is greater than that of known solns. of known alpha-amino acid salts, without using additives such as hydrazine or phenyl hydrazine to extend the life.