FI67414C - Foerfarande foer tillvaratagande av magnesiumbisulfit - Google Patents
Foerfarande foer tillvaratagande av magnesiumbisulfit Download PDFInfo
- Publication number
- FI67414C FI67414C FI781791A FI781791A FI67414C FI 67414 C FI67414 C FI 67414C FI 781791 A FI781791 A FI 781791A FI 781791 A FI781791 A FI 781791A FI 67414 C FI67414 C FI 67414C
- Authority
- FI
- Finland
- Prior art keywords
- magnesium
- sulfur dioxide
- monosulphite
- process according
- decomposition
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/42—Magnesium sulfites
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
- D21C11/063—Treatment of gas streams comprising solid matter, e.g. the ashes resulting from the combustion of black liquor
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Geology (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Claims (11)
1. Förfarande för tillvaratagning av magnesiumbisulfit ur rökgasema frän en lutförbränningspanna, vid vilket förfarande absorption av svaveldioxid sker ätminstone i ett magnesiummonosulfitsteg ooh ätminstone i ett magnesiumbisulfitsteg, kännetecknat därav, att vid absorp-tionen produceras mera magnesiummonosulfit än vad som erfordras för fram-ställningen av bisulfit och den överstigande produktionsmängden, som mot-svarar skillnaden mollan svavelmängden i tjockluten samt allt sulfitiskt och sulfatiskt bundet svavel i kolonnsyran, avlägsnas ur magnesiumbi-sulfitsteget i form av magnesiummonosulfit.
2. Förfarande enligt patentkravet 1, kännetecknat därav, att den avlägsnade magnesiummonosulfiten används som utgängsmaterial vid framställning av svavelsyra.
3. Förfarande enligt patentkravet 1, kännetecknat därav, att den avlägsnade magnesiummonosulfiten sönderdelas genom inverkan av värme tili svaveldioxid och magnesiumoxid och den producerade svaveldioxiden upplöses i den renade bisulfitlösningen medan magnesiumoxiden t.ex. leds tillbaka tili monosulfitsteget.
4. Förfarande enligt patentkravet 3» kännetecknat därav, att den avlägsnade magnesiummonosulfiten sönderdelas inom temperaturomrädet 500-900°C genom enbart termisk sönderdelning utan tillsatsämnen.
5. Förfarande enligt patentkravet 4» kännetecknat därav, att sönderdelningen av magnesiummonosulfiten sker medelst en del av det värme som frigörs frän lutförbränningspannan.
6. Förfarande enligt patentkravet 3» kännetecknat därav, att magnesiummonosulfiten sönderdelas tili magnesiumoxid och svaveldioxid och svaveldioxiden förvätskas.
7. Förfarande enligt patentkravet 4» kännetecknat därav, att magnesiummonosulfiten torkas före sönderdelningen. Θ. Förfarande enligt patentkravet 4» kännetecknat därav, att sönderdelningen av magnesiummonosulfiten sker genom indirekt uppvärmning.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT404177 | 1977-06-08 | ||
AT404177A AT347236B (de) | 1977-06-08 | 1977-06-08 | Verfahren zur rueckgewinnung des magnesiumbi- sulfits aus dem agbasen eines laugenverbrennungskessels |
Publications (3)
Publication Number | Publication Date |
---|---|
FI781791A FI781791A (fi) | 1978-12-09 |
FI67414B FI67414B (fi) | 1984-11-30 |
FI67414C true FI67414C (fi) | 1985-03-11 |
Family
ID=3558848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI781791A FI67414C (fi) | 1977-06-08 | 1978-06-06 | Foerfarande foer tillvaratagande av magnesiumbisulfit |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT347236B (sv) |
CS (1) | CS237301B2 (sv) |
DE (1) | DE2823749C3 (sv) |
FI (1) | FI67414C (sv) |
NO (1) | NO151124C (sv) |
PL (1) | PL110895B1 (sv) |
SE (1) | SE447736B (sv) |
YU (1) | YU42480B (sv) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT383163B (de) | 1985-06-27 | 1987-05-25 | Chemiefaser Lenzing Ag | Verfahren zur regenerierung von aufschlussloesung aus der gebrauchten kochlauge eines magnesiumbisulfit-aufschlussverfahrens sowie filterapparat zur durchfuehrung des verfahrens |
AT396694B (de) * | 1992-02-14 | 1993-11-25 | Waagner Biro Ag | Verfahren zur erzeugung eines homogenen abgases |
AT397929B (de) * | 1992-12-04 | 1994-08-25 | Chemiefaser Lenzing Ag | Verfahren und anlage zur trocknung und anschliessenden spaltung |
-
1977
- 1977-06-08 AT AT404177A patent/AT347236B/de not_active IP Right Cessation
-
1978
- 1978-05-23 NO NO781789A patent/NO151124C/no unknown
- 1978-05-31 SE SE7806363A patent/SE447736B/sv not_active IP Right Cessation
- 1978-05-31 DE DE2823749A patent/DE2823749C3/de not_active Expired
- 1978-06-06 FI FI781791A patent/FI67414C/fi not_active IP Right Cessation
- 1978-06-07 PL PL1978207432A patent/PL110895B1/pl unknown
- 1978-06-07 YU YU1364/78A patent/YU42480B/xx unknown
- 1978-06-08 CS CS783755A patent/CS237301B2/cs unknown
Also Published As
Publication number | Publication date |
---|---|
YU136478A (en) | 1983-01-21 |
DE2823749C3 (de) | 1981-06-19 |
SE447736B (sv) | 1986-12-08 |
NO151124C (no) | 1985-02-13 |
DE2823749A1 (de) | 1978-12-21 |
FI781791A (fi) | 1978-12-09 |
NO781789L (no) | 1978-12-11 |
PL110895B1 (en) | 1980-08-30 |
NO151124B (no) | 1984-11-05 |
YU42480B (en) | 1988-10-31 |
PL207432A1 (pl) | 1979-04-23 |
SE7806363L (sv) | 1978-12-09 |
FI67414B (fi) | 1984-11-30 |
CS237301B2 (en) | 1985-07-16 |
AT347236B (de) | 1978-12-11 |
DE2823749B2 (de) | 1979-04-12 |
ATA404177A (de) | 1978-04-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed |
Owner name: CHEMIEFASER LENZING Owner name: WAAGNER-BIRO AKTIENGESELLSCHAFT |