AU2001239591A1 - Process for purifying aqueous buffer solutions - Google Patents

Process for purifying aqueous buffer solutions

Info

Publication number
AU2001239591A1
AU2001239591A1 AU2001239591A AU3959101A AU2001239591A1 AU 2001239591 A1 AU2001239591 A1 AU 2001239591A1 AU 2001239591 A AU2001239591 A AU 2001239591A AU 3959101 A AU3959101 A AU 3959101A AU 2001239591 A1 AU2001239591 A1 AU 2001239591A1
Authority
AU
Australia
Prior art keywords
sub
solution
buffer solutions
aqueous buffer
procedure
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU2001239591A
Inventor
Olav Erga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of AU2001239591A1 publication Critical patent/AU2001239591A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1425—Regeneration of liquid absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1481—Removing sulfur dioxide or sulfur trioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/73—After-treatment of removed components
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
    • C01D5/14—Preparation of sulfites
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
    • C01D5/14—Preparation of sulfites
    • C01D5/145—Pyrosulfites or metabisulfites

Abstract

The present invention describes a procedure for the removal of sodium sulphate from a phosphate solution that has been used for absorption of SO<SUB>2 </SUB>from flue gases, in which a precipitate forms when the absorption solution is regenerated by evaporation. In this procedure a part of the precipitate is separated from its solution and treated with water and SO<SUB>2 </SUB>for transformation of disodium-hydrogen phosphate into monosodium dihydrogen phosphate in the aqueous solution. The sodium sulphate remains undissolved and is removed by filtration. The filtrate is then added back to the main process.
AU2001239591A 2000-03-06 2001-03-02 Process for purifying aqueous buffer solutions Abandoned AU2001239591A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20001137 2000-03-06
NO20001137A NO312131B1 (en) 2000-03-06 2000-03-06 Process for removing sodium sulfate from a phosphate solution
PCT/NO2001/000084 WO2001066235A1 (en) 2000-03-06 2001-03-02 Process for purifying aqueous buffer solutions

Publications (1)

Publication Number Publication Date
AU2001239591A1 true AU2001239591A1 (en) 2001-09-17

Family

ID=19910840

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001239591A Abandoned AU2001239591A1 (en) 2000-03-06 2001-03-02 Process for purifying aqueous buffer solutions

Country Status (13)

Country Link
US (1) US6960332B2 (en)
EP (1) EP1265692B1 (en)
JP (1) JP4464592B2 (en)
CN (1) CN1199715C (en)
AT (1) ATE254950T1 (en)
AU (1) AU2001239591A1 (en)
BR (1) BR0109015B1 (en)
CA (1) CA2402057C (en)
DE (1) DE60101321T2 (en)
ES (1) ES2211782T3 (en)
MX (1) MXPA02008809A (en)
NO (1) NO312131B1 (en)
WO (1) WO2001066235A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8545754B2 (en) 2009-04-23 2013-10-01 Medtronic, Inc. Radial design oxygenator with heat exchanger
CN103249465B (en) * 2010-10-29 2018-10-09 梅克斯公司 The regeneration recycling of sulfur dioxide in discharge gas
AU2012285707A1 (en) * 2011-07-19 2014-02-20 Pureteq A/S Method for removing impurities from flue gas condensate
CN102992289B (en) * 2012-12-27 2014-09-17 广西明利化工有限公司 Method for producing food-grade phosphoric acid
US10589223B1 (en) 2019-04-18 2020-03-17 Saudi Arabian Oil Company Method and apparatus for treating a sulfur dioxide containing stream by hydrogen sulfide in aqueous conditions
CN114272731A (en) * 2022-01-10 2022-04-05 武钢资源集团乌龙泉矿业有限公司 Device and method for recycling and reusing sulfur dioxide in flue gas

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911093A (en) * 1971-10-18 1975-10-07 Stauffer Chemical Co Recovery of SO{HD 2 {B from waste gas emissions
NO155684C (en) * 1983-09-08 1987-05-13 Sintef PROCEDURE FOR THE REMOVAL OF Sulfur Dioxide From Exhausts.
US4519994A (en) * 1984-02-27 1985-05-28 Stauffer Chemical Company Process for absorption of SO2 into phosphate absorbent
DD252978A5 (en) 1985-09-16 1988-01-06 K PROCESS FOR CLEANING GASES CONTAINING SULFUR DIOXIDE
NO164218C (en) 1988-02-24 1990-09-12 Sintef PROCEDURE FOR CLEANING AFFICIENT BUFFER SOLUTIONS.
US5785888A (en) * 1995-03-24 1998-07-28 Milmac Operating Company Method for removal of sulfur dioxide

Also Published As

Publication number Publication date
BR0109015A (en) 2007-05-29
EP1265692A1 (en) 2002-12-18
BR0109015B1 (en) 2010-06-15
JP4464592B2 (en) 2010-05-19
ES2211782T3 (en) 2004-07-16
CA2402057A1 (en) 2001-09-13
US6960332B2 (en) 2005-11-01
US20030106852A1 (en) 2003-06-12
CN1199715C (en) 2005-05-04
NO20001137D0 (en) 2000-03-06
NO312131B1 (en) 2002-03-25
EP1265692B1 (en) 2003-11-26
DE60101321T2 (en) 2004-09-09
NO20001137L (en) 2001-09-07
MXPA02008809A (en) 2004-10-15
WO2001066235A1 (en) 2001-09-13
ATE254950T1 (en) 2003-12-15
CN1416360A (en) 2003-05-07
CA2402057C (en) 2008-07-29
JP2003525735A (en) 2003-09-02
DE60101321D1 (en) 2004-01-08

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