ATE422954T1 - Verfahren zur reinigung verbrauchter säure - Google Patents

Verfahren zur reinigung verbrauchter säure

Info

Publication number
ATE422954T1
ATE422954T1 AT04759992T AT04759992T ATE422954T1 AT E422954 T1 ATE422954 T1 AT E422954T1 AT 04759992 T AT04759992 T AT 04759992T AT 04759992 T AT04759992 T AT 04759992T AT E422954 T1 ATE422954 T1 AT E422954T1
Authority
AT
Austria
Prior art keywords
spent acid
fraction
tar
acid
mixture
Prior art date
Application number
AT04759992T
Other languages
English (en)
Inventor
Richard Liu
Philip Hill
Thomas PRUITT
Forrest Sanders
Albert Yang
Original Assignee
Rhodia
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/418,193 external-priority patent/US6818799B2/en
Application filed by Rhodia filed Critical Rhodia
Application granted granted Critical
Publication of ATE422954T1 publication Critical patent/ATE422954T1/de

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/24—Pneumatic
    • B03D1/26—Air lift machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C01B17/58—Recovery of sulfur dioxide from acid tar or the like or from any waste sulfuric acid
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/90—Separation; Purification
    • C01B17/92—Recovery from acid tar or the like, e.g. alkylation acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/03—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2
    • C07C29/04—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds
    • C07C29/05—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds with formation of absorption products in mineral acids and their hydrolysis
    • C07C29/06—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds with formation of absorption products in mineral acids and their hydrolysis the acid being sulfuric acid
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/88—Separation; Purification; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification of at least one compound
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/002—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by dehydrogenation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/18—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group
    • C07C67/20—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group from amides or lactams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
AT04759992T 2003-04-17 2004-04-15 Verfahren zur reinigung verbrauchter säure ATE422954T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/418,193 US6818799B2 (en) 2003-04-17 2003-04-17 Process for removing tar from spent acid
US48622903P 2003-07-10 2003-07-10

Publications (1)

Publication Number Publication Date
ATE422954T1 true ATE422954T1 (de) 2009-03-15

Family

ID=33313101

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04759992T ATE422954T1 (de) 2003-04-17 2004-04-15 Verfahren zur reinigung verbrauchter säure

Country Status (5)

Country Link
US (1) US7034193B2 (de)
EP (2) EP1628734B1 (de)
AT (1) ATE422954T1 (de)
DE (1) DE602004019517D1 (de)
WO (1) WO2004094037A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2524310A (en) * 2014-03-20 2015-09-23 Lucite Int Uk Ltd A method of preventing polymer tar build-up in ACH production of MMA and MAA

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB363205A (en) * 1931-01-31 1931-12-17 Ig Farbenindustrie Ag Improvements in the recovery of sulphuric acid from waste acids produced in the refining of mineral or tar oils
US2660516A (en) * 1950-01-25 1953-11-24 Standard Oil Dev Co Sulfuric acid recovery
US2629747A (en) * 1950-12-16 1953-02-24 Standard Oil Dev Co Spent acid restoration process
US4406760A (en) 1981-11-25 1983-09-27 Exxon Research & Engineering Co. Electrolytic process for treating sulfuric acid streams
US5156745A (en) * 1990-05-09 1992-10-20 Cairo Jr John A Induced gas liquid coalescer and flotation separator
ATE223951T1 (de) 1996-02-20 2002-09-15 Rhodia Verfahren zur verflüssigung von teeren

Also Published As

Publication number Publication date
US7034193B2 (en) 2006-04-25
EP2044993A3 (de) 2009-07-29
EP1628734A1 (de) 2006-03-01
WO2004094037A1 (en) 2004-11-04
EP1628734B1 (de) 2009-02-18
DE602004019517D1 (de) 2009-04-02
EP1628734A4 (de) 2007-11-21
US20050010064A1 (en) 2005-01-13
EP2044993A2 (de) 2009-04-08

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties