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Title: Refining Lurgi tar acids

There is disclosed a process for removing tar bases and neutral oils from the Lurgi tar acids by treating the tar acids with aqueous sodium bisulfate to change the tar bases to salts and to hydrolyze the neutral oils to hydrolysis products and distilling the tar acids to obtain refined tar acid as the distillate while the tar base salts and neutral oil hydrolysis products remain as residue.
Authors:
Publication Date:
OSTI Identifier:
6521629
Report Number(s):
US 4443636
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 14 Jul 1982; Other Information: PAT-APPL-398074
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL TAR ACIDS; LURGI PROCESS; PURIFICATION; RECOVERY; REFINING; AQUEOUS SOLUTIONS; CHEMICAL REACTION YIELD; DISTILLATION; HYDROLYSIS; OILS; RESIDUES; SALTS; SODIUM SULFATES; ALKALI METAL COMPOUNDS; CHEMICAL REACTIONS; COAL GASIFICATION; DECOMPOSITION; DISPERSIONS; GASIFICATION; LYSIS; MIXTURES; ORGANIC ACIDS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PROCESSING; SEPARATION PROCESSES; SODIUM COMPOUNDS; SOLUTIONS; SOLVOLYSIS; SULFATES; SULFUR COMPOUNDS; THERMOCHEMICAL PROCESSES; YIELDS 010404* -- Coal, Lignite, & Peat-- Gasification; 010500 -- Coal, Lignite, & Peat-- Products & By-Products