DE1018297B - Process for deodorising the exhaust gases in fishmeal and fish oil production - Google Patents
Process for deodorising the exhaust gases in fishmeal and fish oil productionInfo
- Publication number
- DE1018297B DE1018297B DER17381A DER0017381A DE1018297B DE 1018297 B DE1018297 B DE 1018297B DE R17381 A DER17381 A DE R17381A DE R0017381 A DER0017381 A DE R0017381A DE 1018297 B DE1018297 B DE 1018297B
- Authority
- DE
- Germany
- Prior art keywords
- exhaust gases
- fishmeal
- deodorising
- fish oil
- oil production
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23J—PROTEIN COMPOSITIONS FOR FOODSTUFFS; WORKING-UP PROTEINS FOR FOODSTUFFS; PHOSPHATIDE COMPOSITIONS FOR FOODSTUFFS
- A23J1/00—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites
- A23J1/04—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from fish or other sea animals
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Biochemistry (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Treating Waste Gases (AREA)
Description
Verfahren zur Desodorisierung der Abgase bei der Fischmehl-und Fischölfabrikation Bei der Verarbeitung von Fischen zu Fischmehl und Fischöl bildet der üble Geruch der bei dem Fabrikationsprozeß entstehenden Abgase und Brüden eine recht unangenehme Begleiterscheinung insofern, als die Umgebung dieser Fabriken in weitem Umkreis durch den penetranten Geruch dieser Abgase stark belästigt wird.Process for the deodorization of the exhaust gases in the manufacture of fish meal and fish oil When processing fish into fish meal and fish oil, the unpleasant smell forms the exhaust gases and vapors produced during the manufacturing process are quite unpleasant Accompanying phenomenon insofar as the surroundings of these factories are in a wide area is strongly annoyed by the penetrating smell of these exhaust gases.
Der hervorragendste Geruchsträger der Abgase aus diesen Fabriken ist das Trimethylamin, eine sehr flüchtige Substanz von basischem Charakter, das sich laufend aus dem im Fleisch der Seefische stets vorhandenen Trimethylaminoxyd bildet. Bei der Trocknung des Fischgutes zu Fischmehl in Dampf- und Feuergastrocknern entsteht das Trimethylamin in reichlicher Menge durch Autolyse aus dem im Fischgut vorhandenen Trimethylaminoxyd und geht in die Trocknerabluft über. The most outstanding odor carrier of the exhaust gases from these factories is trimethylamine, a very volatile substance with a basic character that continuously from the trimethylamine oxide that is always present in the meat of sea fish forms. When drying the fish to fish meal in steam and fire gas dryers the trimethylamine is produced in abundance by autolysis from the fish in the fish trimethylamine oxide present and passes into the dryer exhaust air.
Es hat nicht an Versuchen gefehlt, diese Geruchsplage zu bekämpfen. Es ist bekannt, diese Abgase in Waschtürme mit chloriertem Wasser zu waschen um die Geruchsträger niederzuschlagen. Auch wird den aus diesen Waschvorrichtungen abziehenden Gasen noch Chlor beigegeben. Es ist des weiteren bekannt, die Trocknerabgase in besondere, vorzugsweise mit Koks gefeuerte Öfen hineinzuleiten, um dergestalt die den Abgasen anhaftenden Gerüche zu beseitigen. There has been no lack of attempts to combat this odor plague. It is known to wash these exhaust gases in washing towers with chlorinated water knock down the odor carriers. This is also the case with these washing devices chlorine was added to the exhausting gases. It is also known that the dryer exhaust gases to lead into special, preferably coke-fired ovens in order to do so eliminate the smells attached to the exhaust gases.
Es hat sich jedoch gezeigt, daß diese Verfahren noch keineswegs für eine vollltommene Entfernung der Gerüche genügen. It has been shown, however, that this method is by no means for complete removal of odors is sufficient.
Es liegt nun an sich nahe, die mit Geruchsstoffen beladene Abluft vermittels Waschens mit Säuren zu reinigen. Jedoch abgesehen von den Unannehmlichkeiten die der Umgang mit Säuren im praktischell Eetriebe in sich birgt, werden die von den praktisch brauchbaren Säuren, wie z. B. Schwefelsäurelösung, gebundenen Geruchsstoffe nicht aus dieser ausgefällt, sondern bleiben in Lösung und reichern dadurch die Betriebssäure schnell bis zur Unbrauchbarkeit an. It is obvious now, the exhaust air laden with odorous substances to be cleaned by means of washing with acids. But apart from the inconvenience that the handling of acids in practical business involves, are those of the practically useful acids, such as. B. sulfuric acid solution, bound odorous substances not precipitated from this, but remain in solution and thereby enrich the Operating acid quickly to the point of uselessness.
Die Erfindung beseitigt diese Schwierigkeiten in vorteilhafter Weise. Sie besteht darin, daß die übelriechenden Abgase nach zweckmäßig erfolgter Abkühlung und Kondensation ihres Wasserballastes, das wie bekannt mittels Einspritz- oder Oberflächenkondensation erfolgt, mit einer wäßrigen Lösung eines sauren Salzes, wie Natriumbisulfat Nall SO4, in innige Berührung gebracht werden, wobei die Geruchsträger, also die sekundären und tertiären Amine, gebunden und als neutrale Salze ausgefällt werden. The invention overcomes these difficulties in an advantageous manner. It consists in the fact that the foul-smelling exhaust gases after appropriate cooling and condensation of their water ballast, which, as is known, by means of injection or Surface condensation occurs with an aqueous solution of an acid salt, such as sodium bisulfate Nall SO4, are brought into intimate contact, whereby the odor carriers, that is, the secondary and tertiary amines, bound and precipitated as neutral salts will.
Es wurde gefunden, daß das Natriumbisulfat (Na 1-1 5 04) sich ganz besonders als ein technisch brauchbares und wirksames Absorbiersolvens eignet, da es gerade die für einen praktischen Desodorisierbetrieb erforderlichen verschiedenartigen Eigenschaften im besonderen Maße besitzt. The sodium bisulfate (Na 1-1 5 04) was found to be whole particularly suitable as a technically useful and effective absorbent solvent, since there are just the various types required for a practical deodorizing operation Possesses properties in a special degree.
Es ist sehr wirksam als Absorbiersolvens, gefahrlos in betrieblicher .Hinsicht, ungiftig, selbstreinigend durch schnelles Ausfällen der gebildeten Salze und wirtschaftlich. It is very effective as an absorbent solvent, safe in operational use With regard to, non-toxic, self-cleaning due to rapid precipitation of the salts formed and economical.
Die Anwendung geschieht derart, daß das Natriumbisulfat in etwa 50- bis 900/oiger kalt gesättigter Lösung die Fülikörpersäule einer an sich bekannten Gaswaschvorrichtung im Gegenstrom zur hindurchströmenden Abluft durchfließt, wobei die Absorptionslösung in innigen Kontakt mit der zu reinigenden Abluft gebracht wird. The application is done in such a way that the sodium bisulfate in about 50- up to 900% cold saturated solution, the full body column of a known per se Gas scrubbing device flows through in countercurrent to the exhaust air flowing through, wherein the absorption solution brought into intimate contact with the exhaust air to be cleaned will.
Es ist hierbei zweckmäßig, die Abluft vor dieser Behandlung mittels Wasser zu waschen, um flüchtige Spaltprodukte des Fischfettes sowie Staub aus den Trocknern niederzuschlagen. It is useful here to use the exhaust air before this treatment Wash water to remove volatile breakdown products of fish fat and dust from the Knock down dryers.
Die Na US 04-Lösung ist hydrolytisch gespalten; die freien 5 04"-Ionen binden im Kontakt mit der Abluft die sehr hohe Basizität des Trimethylamins, wobei diese als geruchloses kristallisches schwefelsaures Amin ausgefällt wird. In dem Maße, wie freie S 04"-Ionen zur Sulfatbildung verbraucht werden, bilden sich neue S04"-Ionen nach, so daß der Verbrauch an wirksamen NaH 5 04 dem Sulfatanfall äquivalent ist. Das ausgefällte Sulfat scheidet sich in kristalliner Form in dem Umlauftank der im Kreislauf fließenden NalIS04-Lösung ab. Die somit vom Trimethylamin befreite Abluft ist dann praktisch geruchlos. The Na US 04 solution is hydrolytically split; the free 504 "ions bind the very high basicity of trimethylamine in contact with the exhaust air, whereby this is precipitated as an odorless crystalline sulfuric acid amine. By doing Measures of how free S 04 "ions are consumed for sulfate formation, new ones are formed SO4 "ions, so that the consumption of effective NaH 504 is equivalent to the amount of sulfate is. The precipitated sulfate separates in crystalline form in the recirculation tank the NalIS04 solution flowing in the circuit. The thus freed from trimethylamine Exhaust air is then practically odorless.
Dieses neuartige Desodorisierverfahren ermöglicht in wirtschaftlicher Weise eine Reinigung der Abgase aus Fischmehlfabrilren und beseitigt die in der Nachbarschaft solcher Fabriken vorhandene starkeGeruchsbelästigung. Die bei diesem Verfahren anfallenden Mengen ausgefällter Salze stelíen noch einen zusätz- lichen Wert dar, der zur Deckung der Desodorisierkosten mit beiträgt. This new type of deodorization process makes it more economical Way a purification of the exhaust gases from fishmeal factories and eliminates those in the Strong odor nuisance in the vicinity of such factories. The one with this one Process amounts of precipitated salts represent an additional lichen Value that contributes to covering the deodorizing costs.
PATrNTANSPRUCH: Verfahren zur Desodorisierung der Abgase voa Fischmehlfabriken, dadurch gekennzeichnet, daß die Abgase mit Lösungen saurer Salze, wie Natriumbisulfatlösung, in innige Berührung gebracht werden. CLAIM: Process for the deodorization of the exhaust gases from fishmeal factories, characterized in that the exhaust gases with solutions of acid salts, such as Sodium bisulfate solution, be brought into intimate contact.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER17381A DE1018297B (en) | 1955-09-05 | 1955-09-05 | Process for deodorising the exhaust gases in fishmeal and fish oil production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER17381A DE1018297B (en) | 1955-09-05 | 1955-09-05 | Process for deodorising the exhaust gases in fishmeal and fish oil production |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1018297B true DE1018297B (en) | 1957-10-24 |
Family
ID=7399965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DER17381A Pending DE1018297B (en) | 1955-09-05 | 1955-09-05 | Process for deodorising the exhaust gases in fishmeal and fish oil production |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1018297B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2366051A1 (en) * | 1976-10-02 | 1978-04-28 | Bbc Brown Boveri & Cie | FILTERING MATERIAL IN PARTICLES OR IN PLATES FOR ALKALINE MATERIALS IN THE STATE OF GAS OR VAPORS |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE404580C (en) * | 1924-10-30 | Willy Stelkens | Method and device for treating gases with liquids in washing towers | |
DE703475C (en) * | 1938-10-29 | 1941-03-10 | Stockhausen & Cie Chem Fab | Process for the production of odorless feed by boiling fish, parts of fish or fish waste |
DE721263C (en) * | 1930-04-07 | 1942-05-30 | Stockhausen & Cie Chem Fab | Process for the production of odorless feed from fish |
DE748699C (en) * | 1938-07-31 | 1954-01-04 | Bamag Meguin A G | Countercurrent step washer |
-
1955
- 1955-09-05 DE DER17381A patent/DE1018297B/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE404580C (en) * | 1924-10-30 | Willy Stelkens | Method and device for treating gases with liquids in washing towers | |
DE721263C (en) * | 1930-04-07 | 1942-05-30 | Stockhausen & Cie Chem Fab | Process for the production of odorless feed from fish |
DE748699C (en) * | 1938-07-31 | 1954-01-04 | Bamag Meguin A G | Countercurrent step washer |
DE703475C (en) * | 1938-10-29 | 1941-03-10 | Stockhausen & Cie Chem Fab | Process for the production of odorless feed by boiling fish, parts of fish or fish waste |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2366051A1 (en) * | 1976-10-02 | 1978-04-28 | Bbc Brown Boveri & Cie | FILTERING MATERIAL IN PARTICLES OR IN PLATES FOR ALKALINE MATERIALS IN THE STATE OF GAS OR VAPORS |
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