PT92320A - Processo para descolorar acido sulfurico proveniente de processos de producao de acido - Google Patents

Processo para descolorar acido sulfurico proveniente de processos de producao de acido

Info

Publication number
PT92320A
PT92320A PT92320A PT9232089A PT92320A PT 92320 A PT92320 A PT 92320A PT 92320 A PT92320 A PT 92320A PT 9232089 A PT9232089 A PT 9232089A PT 92320 A PT92320 A PT 92320A
Authority
PT
Portugal
Prior art keywords
acid
decorating
processes
production
sulphuric acid
Prior art date
Application number
PT92320A
Other languages
English (en)
Other versions
PT92320B (pt
Inventor
Jan Lennart Jonsson
Sten Ake Nilsson
Original Assignee
Boliden Contech Ab
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 Boliden Contech Ab filed Critical Boliden Contech Ab
Publication of PT92320A publication Critical patent/PT92320A/pt
Publication of PT92320B publication Critical patent/PT92320B/pt

Links

Classifications

    • 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
    • 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
    • C01B17/905—Removal of organic impurities

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Saccharide Compounds (AREA)
  • Detergent Compositions (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Stereophonic System (AREA)
  • Television Systems (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
PT92320A 1988-11-16 1989-11-15 Processo para descolorar acido sulfurico proveniente de processos de producao de acido PT92320B (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8804123A SE464299B (sv) 1988-11-16 1988-11-16 Foerfarande foer avfaergning av svavelsyra framstaelld enligt kontaktmetoden

Publications (2)

Publication Number Publication Date
PT92320A true PT92320A (pt) 1990-05-31
PT92320B PT92320B (pt) 1996-01-31

Family

ID=20373947

Family Applications (1)

Application Number Title Priority Date Filing Date
PT92320A PT92320B (pt) 1988-11-16 1989-11-15 Processo para descolorar acido sulfurico proveniente de processos de producao de acido

Country Status (13)

Country Link
US (1) US5026535A (pt)
EP (1) EP0369973B1 (pt)
JP (1) JPH02180704A (pt)
AT (1) ATE111055T1 (pt)
AU (1) AU616805B2 (pt)
CA (1) CA2000879C (pt)
DE (1) DE68918053T2 (pt)
DK (1) DK568689A (pt)
ES (1) ES2063838T3 (pt)
FI (1) FI88495C (pt)
NO (1) NO894556L (pt)
PT (1) PT92320B (pt)
SE (1) SE464299B (pt)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926112A1 (de) * 1989-08-08 1991-02-14 Hoechst Ag Verfahren zur wiederaufbereitung der schwefelsaeure aus der phosphor-reinigung
FR2674843B1 (fr) * 1991-04-04 1993-09-17 Emc Services Procede et dispositif de purification d'acide sulfurique concentre contamine par des impuretes organiques.
JP3339067B2 (ja) * 1991-12-25 2002-10-28 住友化学工業株式会社 硫酸アルミニウムの製造方法
JPH0763703B2 (ja) * 1992-06-11 1995-07-12 東信化学工業株式会社 過酸化水素の分解方法
US5549833A (en) * 1992-06-11 1996-08-27 Toshin Chemical Industry Co., Ltd. Method of decomposing hydrogen peroxide
CN1049638C (zh) * 1993-10-01 2000-02-23 敖尔圣 一种精制硫酸系列产品的生产新工艺
CA2134270C (en) * 1994-10-25 2005-07-26 Drew John Drexler Nox destruction in sulphuric acid
ES2105969B1 (es) * 1995-07-14 1998-07-01 Gen Quimica S A Procedimiento para la recuperacion de acido sulfurico a partir de corrientes residuales de sulfurico de mediana concentracion contaminadas con materia organica.
FR2772014B1 (fr) * 1997-12-08 2000-01-07 Atochem Elf Sa Generation de trifluorure de bore et d'acide sulfurique a partir d'hydrate de trifluorure de bore
US6896865B2 (en) * 2000-04-28 2005-05-24 Tosoh Corporation Method for recovering hydrogen chloride from chlorine based waste and use of recovered hydrogen chloride
DE102005049084A1 (de) * 2005-10-13 2007-04-26 Wacker Chemie Ag Verfahren zur Regenerierung von Schwefelsäure
DE202010003399U1 (de) 2009-11-25 2010-06-24 Donau Chemie Ag Zusammensetzung zum Entfärben bzw. Verhindern der Verfärbung von konzentrierter Schwefelsäure
CN103172035A (zh) * 2013-03-27 2013-06-26 刘立文 一种利用双氧水对硫酸进行脱色的方法
CN103230775B (zh) * 2013-05-10 2015-09-09 刘立文 一种碳化植物纤维硫酸脱色剂及其制备方法
US9278860B2 (en) * 2014-07-22 2016-03-08 Taiwan Semiconductor Manufacturing Co., Ltd. Method and apparatus for recycling waste sulfuric acid
IL236365A0 (en) 2014-12-21 2015-04-30 Melodea Ltd Recycling of acid from acid-rich aqueous solutions
US9499405B2 (en) * 2015-03-10 2016-11-22 Ei Du Pont De Nemours And Company Process for producing sulfuric acid with low levels of niter
CN212315566U (zh) * 2019-05-22 2021-01-08 索尔维公司 硫酸钠回收设备

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067793B (de) * 1956-05-23 1959-10-29 Zieren Chemiebau Gmbh Dr A Verfahren zur Herstellung von reiner konzentrierter Schwefelsaeure nach dem Kontaktverfahren aus Roestgasen, die durch organische Stoffe verunreinigt sind
BE791400A (fr) * 1971-11-16 1973-03-01 Canadian Ind Procede de production d'acide sulfurique
US3856673A (en) * 1973-04-02 1974-12-24 Air Prod & Chem Purification of spent sulfuric acid
SE403096B (sv) * 1975-06-12 1978-07-31 Hoechst Ag Sett att rena en med ettiksyra och klorvete fororenad utspedd svavelsyra
CA1059943A (en) * 1976-07-20 1979-08-07 Noranda Mines Limited Electrolytically forming peroxosulfuric acid to oxidize organic material in sulfuric acid
DE2632989A1 (de) * 1976-07-22 1978-02-02 Hoechst Ag Verfahren zum regenerieren von schwefelsaeure
DE2942545A1 (de) * 1979-10-20 1981-06-04 Riedel-De Haen Ag, 3016 Seelze Verfahren zur herstellung einer gereinigten oxidationsbestaendigen anorganischen saeure und danach erhaltene saeure
JPS5832003A (ja) * 1981-08-13 1983-02-24 Mitsubishi Metal Corp 着色濃硫酸の脱色方法
US4591494A (en) * 1983-02-03 1986-05-27 C-I-L Method and apparatus for making sulphuric acid
CH654282A5 (de) * 1983-02-09 1986-02-14 Bertrams Ag Verfahren und einrichtung zum konzentrieren und reinigen von organische verunreinigungen enthaltender schwefelsaeure.

Also Published As

Publication number Publication date
FI88495B (fi) 1993-02-15
EP0369973A1 (en) 1990-05-23
JPH02180704A (ja) 1990-07-13
DE68918053D1 (de) 1994-10-13
EP0369973B1 (en) 1994-09-07
PT92320B (pt) 1996-01-31
FI895254A0 (fi) 1989-11-06
AU4297389A (en) 1990-05-24
ES2063838T3 (es) 1995-01-16
US5026535A (en) 1991-06-25
SE464299B (sv) 1991-04-08
CA2000879A1 (en) 1990-05-16
NO894556D0 (no) 1989-11-15
AU616805B2 (en) 1991-11-07
CA2000879C (en) 1996-08-27
FI88495C (fi) 1993-05-25
SE8804123L (sv) 1990-05-17
SE8804123D0 (sv) 1988-11-16
ATE111055T1 (de) 1994-09-15
DK568689A (da) 1990-05-17
DE68918053T2 (de) 1995-01-12
NO894556L (no) 1990-05-18
DK568689D0 (da) 1989-11-14

Similar Documents

Publication Publication Date Title
PT92320A (pt) Processo para descolorar acido sulfurico proveniente de processos de producao de acido
ES2048548T3 (es) Procedimiento para la preparacion de las soluciones acuosas con contenido en sulfuro de hidrogeno, en acido cianhidrico y en amoniaco.
BR9304184A (pt) Processo para produzir poli-succinimida
BR8703516A (pt) Processo de produzir corpo ceramico de auto-sustentacao e corpo ceramico assim obtido
BR8007446A (pt) Aperfeicoamento em processo de tratamento de uma corrente residual da fabricacao de acido adipico
ATE181038T1 (de) Verfahren zur oxidation von chlorwasserstoff
PL326289A1 (en) Method of purifying dimethyl sulphoxide (dmso) and purified dmso
EP0177839A3 (de) Verfahren zur Entfernung von Schwefeldioxid und Stickoxiden aus Rauchgasen
ATE125778T1 (de) Verfahren zum konzentrieren und reinigen von schwefelsäure.
PT81908A (fr) Procede de fabrication de carbonate de sodium anhydre dense
GR3003696T3 (pt)
DK276083A (da) Fremgangsmaade til fremstilling af svovlsyre af gasarter udviklet i diskontinuerlige processer
DE3865096D1 (de) Verfahren zum eindampfen von schwefelsaeure.
CA2083337A1 (fr) Procede de decapage de materiau en acier doux, bain et installation de decapage
JPS53114926A (en) Production of heat-resistant glass fibers
JPS57192330A (en) Manufacture of 3,3-dimethylglutaric acid
SE8206918L (sv) Forfarande for att ur kvicksilverinnehallande svaveldioxidhaltiga, vesentligen torra, gaser producera ren svavelsyra och hogverdig kvicksilverprodukt

Legal Events

Date Code Title Description
FG3A Patent granted, date of granting

Effective date: 19951027

MM3A Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 19980430