PL100943B1 - METHOD OF TREATMENT OF WASTE PRODUCTS ARISING IN THE PROCESS OF OBTAINING SODIUM SOLVAY'S METHOD FOR FURTHER PROCESSING INTO USEFUL PRODUCTS - Google Patents
METHOD OF TREATMENT OF WASTE PRODUCTS ARISING IN THE PROCESS OF OBTAINING SODIUM SOLVAY'S METHOD FOR FURTHER PROCESSING INTO USEFUL PRODUCTS Download PDFInfo
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- PL100943B1 PL100943B1 PL17680374A PL17680374A PL100943B1 PL 100943 B1 PL100943 B1 PL 100943B1 PL 17680374 A PL17680374 A PL 17680374A PL 17680374 A PL17680374 A PL 17680374A PL 100943 B1 PL100943 B1 PL 100943B1
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- Prior art keywords
- waste products
- water
- filtration
- aqueous suspension
- suspension
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 25
- 239000002699 waste material Substances 0.000 title claims description 21
- 239000011734 sodium Substances 0.000 title description 2
- 229910052708 sodium Inorganic materials 0.000 title description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000000047 product Substances 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 19
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 18
- 239000007900 aqueous suspension Substances 0.000 claims description 16
- 239000013049 sediment Substances 0.000 claims description 14
- 239000010802 sludge Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 229910021529 ammonia Inorganic materials 0.000 claims description 9
- 239000000706 filtrate Substances 0.000 claims description 9
- 239000002244 precipitate Substances 0.000 claims description 8
- 230000008929 regeneration Effects 0.000 claims description 8
- 238000011069 regeneration method Methods 0.000 claims description 8
- 239000012267 brine Substances 0.000 claims description 7
- 239000008394 flocculating agent Substances 0.000 claims description 7
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 7
- 235000019738 Limestone Nutrition 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 5
- 238000011403 purification operation Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000000725 suspension Substances 0.000 description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 9
- 239000003337 fertilizer Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
- 239000011575 calcium Substances 0.000 description 5
- 229910052791 calcium Inorganic materials 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000167854 Bourreria succulenta Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 208000034656 Contusions Diseases 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 206010026749 Mania Diseases 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000019693 cherries Nutrition 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011175 product filtration Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Description
Przedmiotem wynalazku jest sposób uzdatniania produktów odpadowych, powstajacych w procesie otrzymywania sody metoda Solvay'a, dla uzyski¬ wania z nich produktów uzytecznych.The invention relates to a treatment method waste products resulting from the process of soda preparation by the Solvay method for the they make useful products.
W procesie otrzymywania sody metoda Solvay?a powstaja produkty odlpadowe, przy czym glówny¬ mi produktami odpadowymi sa zawiesina pocho¬ dzaca z operacji regeneracji amoniaku, zawiesina z operacji oczyszczania solanki oraz odpady sta¬ le z operacji wypalania kamienia wapiennego.In the process of obtaining soda, the Solvay method the production of waste products, the main one The waste product is the slurry Ammonia regeneration operation, suspension from brine cleaning operations and solid waste it is wrong with the limescale burning operation.
W zakladach produkujacych sode metoda Sol- vay'a produkty odpadowe odprowadza sie zazwy¬ czaj do ziemnych osadników, w celu osadzenia i wieloletniego magazynowania czesci stalych, na¬ tomiast wzglednie klarowne roztwory z osadników odprowadza sie do zlewisk wodnych. Osadniki ziemne zajmuja wielohektarowe powierzchnie grun¬ tów.In plants producing soda with the Sol- vay'a waste products are usually collected Go to the earthen settlers to settle and long-term storage of solids, na¬ on the other hand, relatively clear solutions from settlers is discharged into water catchments. Settlers earthworks cover many hectares of land ts.
W literaturze technicznej oraz patentowej nie sa znane metody bezposredniego zastosowania tych produktów odpadowych jako produktów uzytecz¬ nych.In the technical and patent literature they are not known methods of direct application of these waste products as useful products all.
Znany jest sposób uzdatniania produktów odpa¬ dowych z operacji regeneracji amoniaku przez ich mieszanie ze szlamami z produkcji wodorotlenku sodowego.It is known to treat waste products from ammonia regeneration operations by them mixing with sludges from hydroxide production soda.
Inny znany sposób uzdatniania produktów odpa¬ dowych z operacji regeneracji amoniaku polega na kilkakrotnym ich zageszczaniu z równoczesnym mieszaniem z woda dla usuniecia nadntóernej ilos¬ ci jonów chlorkowych i jednostopniowej filtracji.Another known method of treating products is waste The ammonia regeneration operation involves on their simultaneous concentration several times mixing with water to remove excessive amounts Ci chloride ion and single-stage filtration.
Uzyskane szlamy z filtracji posiadaja wilgotnosc nie mniejsza niz 70%. _ ¦ Znany jest równiez sposób wykorzystania pro¬ duktów odpadowych, po uprzednim ich osadzeniu i wieloletnim skladowaniu w celu wysuszenia, ja¬ ko nawozów wapniowych, jednak z uwagi na po¬ zostala w nich zawartosc jonów chlorkowych, przydatnosc ich jest malo znaczaca. 3posób wedlug wynalazku polega na tym, ze za¬ wiesine wodna pochodzaca z regeneracji amoniaku, zawiesine wodna z operacji oczyszczania solanki oraz zawiesine wodna tziw. „przepalu" z operacji wypalania" kamienia wapiennego miesza sie ra¬ zem, zageszcza w znanych urzadzeniach do steze¬ nia 8 do 12% wagowych ciala stalego, ewentualnie dodaje srodek flokulujacy przy czym klarowny roztwór odprowadza sie jako sciek, a zageszczony osad filtruje dwu lufo wielostopniowo, korzystnie w wirówkach lufo w filtrach tarczowych, w tem¬ peraturze 70 do 90°C dla zmniejszenia lepkosci za¬ wiesiny. Do osadu miedzy kolejnymi filtracjami dodaje sie cieczy nie zawierajacej jonów chlorko- *• wych, takich jak woda lub np. zawiesina wodna z odpylania gazów lufo oczyszczania wody dla kotlowni, dla uzyskania stezenia jonów chlorko¬ wych odpowiadajacego wymogom stawianym np. nawozom wapniowym posodowym tj. nie wyzej niz 5°/o chlorków w przeliczeniu na chlor. Filtrat 100 943100 943 z koncowej filtracji laczy sie z produktami odpa¬ dowymi przed ich zageszczeniem.The resulting filtration sludge has a moisture content not less than 70%. _ ¦ The way to use the pro is also known waste ducts, after their previous settling and long-term storage for drying, such as of calcium fertilizers, however, due to the they contain chloride ions, their usefulness is of little importance. The method according to the invention consists in the fact that water spring from the regeneration of ammonia, water suspension from brine purification operations and an aqueous suspension such as "Burn" the operation firing "limestone is mixed with rain it concentrates in known concentration devices 8 to 12% by weight of solids, optionally adds a flocculating agent while being clear the solution is discharged as a drain and concentrated the sediment is filtered in two or more stages, preferably in centrifuges or in disc filters, at at 70 to 90 ° C to reduce the viscosity cherries. To the sludge between subsequent filtrations a liquid that does not contain chloride ions is added * • such as water or, for example, aqueous suspension from gas dedusting or water purification for boiler room to obtain the chloride ion concentration according to the requirements of e.g. post-sodium calcium fertilizers, i.e. not above less than 5% of chlorides expressed as chlorine. Filtrate 100 943 100 943 from the final filtration is mixed with the products evidence before they are concentrated.
Korzystne rozwiazanie sposobu uzdatniania we¬ dlug wynalazku polega na tym, ze do zageszcza¬ nych produktów odpadówycih oraz do zawiesin" 5 poddawanych filtracji dodaje sie czynnika floku¬ lujacego np. typu poliakryloamidu, takiego jak np.An advantageous solution for the treatment of water the debt of the invention lies in the fact that it is thickening waste products and suspensions "5 to be filtered, the flocculant is added loosening e.g. of the polyacrylamide type, such as e.g.
Gigtar, Rokrysol o aktywnosci powyzej 1 m/h, w ilosci od 1,5 do 3 g/m3 produktów odpadowych.Gigtar, Rokrysol with an activity above 1 m / h, w amounts of 1.5 to 3 g / m3 of waste products.
IW innej korzystnej postaci sposobu wedlug wy- 10 nalazku- zawiesine wodna tak zwanego „przepa¬ lu", pochodzaca z operacji wypalania kamienia wa¬ piennego, dodaje sie do osadu z pierwszej filtracji^ 'albo filtruje "sie ja oddzielnie, a odfiltrowany osad tniesza sie z osadem z koncowej filtracji produk- 15 itów odpadowych, przy czym filtrat miesza sie :z osadem-2 pierwszej filtracji.In another preferred embodiment of the method according to 10 the invention - an aqueous suspension of the so-called lu ", derived from the stone firing operation was added to the precipitate from the first filtration 'or it is filtered' separately and the filtered sediment it is cut with the sludge from the final product filtration waste, the filtrate being mixed : with sediment-2 first filtration.
Sposób uzdatniania produktów odjpadowych we¬ dlug wynalazku charakteryzuje sie prostota poste¬ powania oraz obslugi, prowadzony jest w znanych urzadzeniach o malym tonazu oraz nie wymaga stosowania dodatkowych surowców, poza czyn¬ nikiem flokulujacym w wypadku jego zastosowa¬ nia oraz mozliwe jest wykorzystanie w czasie pro¬ cesu roztworów odpadowych zanieczyszczonych pylami.Waste products treatment method in The debt of the invention is characterized by simplicity and progress of seriousness and service, is carried out in well-known low-tonnage equipment and does not require the use of additional raw materials, in addition to the flocculating agent in case of its use and it is possible to use it during the program process of contaminated waste solutions dusts.
Osady otrzymane sposobem wedlug wynalazku charakteryzuja sie niska zawartoscia wilgoci rze¬ du 50%j, a poddane dalszej operacji stosowane sa jako np. nawozy \waphiowe lub w produkcji ce¬ mentu.The sediments obtained by the method of the invention they are characterized by a low moisture content 50% j, and those subjected to further operation are used as, for example, wafer fertilizers or in the production of ceilings ment.
Przyklad I. Zawiesine wodna z operacji re¬ generacji amoniaku o temperaturze okolo 90°C, zawiesine wodna z oczyszczania solanki o temlpe- raiturze okolo 20°C oraz zawiesine wodna tak zwanego „przepalu" pochodzacego z operacji wy¬ palania kamienia walpiennego o temperaturze oko¬ lo 30°C otrzymane jako produkty odpadowe pro¬ cesu produkcji sody metoda Solvay'a miesza sie z filtratem z koncowej filtracji. Zawiesine o tem¬ peraturze okolo 80°C, stezeniu 1?5% wagowych cia¬ la stalego i zawartosci jonów chlorkowych okolo 12% wagowych zageszcza sie w odstojniku do ste¬ zenia okolo 10% wagowych ciala stalego. Tak wy¬ tworzona zawiesine filtruje sie, a uzyskany osad o zawartosci ponizej 50% wagowych wody i tem¬ peraturze okolo 75°C miesza sie z woda. Uzyska¬ na zawiesine o temperaturze okolo 75UC, stezeniu okolo 12% wagowych ciala stalego, stezeniu jo¬ nów chlorkowych okolo 2,5% wagowych filtruje sie ponownie, a otrzymany osad posiada zawartosc ponizej 50% wagowych wody oraz temperature okolo 70°C. Osad po wysuszeniu moze byc stoso^ wany jako tak zwany nawóz wapniowy posodowy.Example I. Aqueous Suspension from Re¬ operation generation of ammonia at a temperature of around 90 ° C, water suspension from brine purification at a temperature temperature around 20 ° C and water suspension yes the so-called "burnout" resulting from the operation of the burning limestone at a temperature of approx 30 ° C obtained as waste products pro ¬ the process of soda production by the Solvay method is mixed with filtrate from final filtration. Suspended temperature at about 80 ° C, at a concentration of 1-5% bw la solid and chloride ion content around 12% by weight is concentrated in the settler to a concentration it takes about 10% by weight of solids. Yes you are the resulting suspension is filtered and the obtained sediment with a content of less than 50% by weight of water and temperature At temperatures around 75 ° C it is miscible with water. Obtained on a suspension at a temperature of about 75UC, concentration about 12% by weight of solids, ion concentration about 2.5% by weight of chloride filters August again and the resulting sediment has a content less than 50% by weight of water and temperature around 70 ° C. After drying, the sludge can be piled up important as the so-called post-soda calcium fertilizer.
Przyklad H. Podane w przykladzie I zawie¬ siny wodne z operacji regeneracji amoniaku, oczyszczania solanki i tak zwanego „przepalu" z operacji wypalania kamienia wapiennego miesza sie z filtratem z koncowej filtracji, a do mieszani¬ ny dodaje sie czynnika flokulujacego w ilosci oko- *° lo 1^5 g/m3 zawiesiny i zageszcza mieszanine do zawartosci okolo 12% wagowych ciala stalego w odstojniku. Do zageszczonej zawiesiny dodaje sie ponownie czynnika flokulujacego w ilosci 3 g/m3 zawiesiny, nastepnie filtruje sie, a uzyskany osad & 40 45 50 55 o zawartosci ponizej 50% wagowych wody i tem¬ peraturze okolo 70°C miesza sie z goraca woda.Example H. The given in example I fail water bruises from ammonia regeneration operations, brine purification and the so-called "burn" from limestone firing operation is mixed mixed with the filtrate from the final filtration and mixed ny, the flocculating agent is added in an amount of approx. * ° 1 ^ 5 g / m3 of suspension and thickens the mixture to about 12% by weight of solids in decanter. Add to the concentrated suspension again a flocculating agent in the amount of 3 g / m3 suspensions, then filtered, and the obtained sediment & 40 45 50 55 with a content of less than 50% by weight of water and temperature At temperatures around 70 ° C it is mixed with hot water.
Do uzyskanej mieszaniny o temperaturze' okolo 80°Cj stezeniu okolo 20% wagowych ciala stalego i stezeniu jonów chlorkowych okolo 2,5% wago¬ wych dodaje sie ponownie czynnika flokulujacego w ilosci okolo 3 g/m3 zawiesiny, filtruje ponownie, a otrzymany osad o zawartosci ponizej 50% wa¬ gowych wody oraz temperaturze okolo 75°C pod¬ daje suszeniu. Osad moze byc stosowany jako na¬ wóz wapniowy posodowy. Sposób powyzszy po¬ zwala na otrzymanie roztworów z filtracji o mniej¬ szej zawartosci ciala stalego, niz w sposobie poda¬ nym w przykladzie I.For the resulting mixture at a temperature of 'approx 80 ° C at a concentration of about 20% by weight of solids and a chloride ion concentration of about 2.5% by weight the flocculating agent is added again in an amount of about 3 g / m3 of suspension, filtered again, and the obtained precipitate with a content of less than 50% by weight water and a temperature of about 75 ° C gives drying. The sludge can be used as na¬ post-soda calcium car. The method above makes it possible to obtain solutions from filtration by less more solid than in the manner given in example I.
Przyklad III. Zawiesine wodna pochodzaca z operacji regeneracji amoniaku o temperaturze okolo 90°C miesza sie z filtratem z koncowej fil¬ tracji. Zawiesine o temperaturze okolo 85°C za¬ geszcza sie do zawilosci okolo 12% wagowych w odstojniku. Zageszczona zawiesine filtruje sie otrzymujac osad o zawartosci okolo 50% wagowych wody. Osad miesza sie z zawiesina pochodzaca z operacji oczyszczania solanki o temperaturze okolo 30°C i zawiesina wodna tak zwanego „prze¬ palu" pochodzaca z operacji wypalania kamienia wapiennego i goraca woda. Uzyskana zawiesine o zawartosci okolo 25% wagowych ciala stalego filtruje sie ponownie, otrzymujac osad o zawar¬ tosci ponizej 50% wagowych wody. Osad poddaje sie nastepnie suszeniu. Moze byc on wykorzystany jako nawóz wapniowy posodowy.Example III. The derived aqueous suspension from ammonia regeneration at temperature about 90 ° C is mixed with the filtrate from the final filter thrace. The suspension at a temperature of about 85 ° C brush to a thickness of about 12% by weight in the decanter. The concentrated suspension is filtered obtaining a precipitate with a content of about 50% by weight water. The sediment is mixed with the derived suspension from brine purification operations at temperature around 30 ° C and the aqueous suspension, the so-called pile "derived from stone firing operations limestone and hot water. The resulting suspension with a solids content of about 25% by weight it is filtered again to obtain a precipitate with a content of less than 50% by weight of water. The sediment surrenders then drying. It can be used as post-soda calcium fertilizer.
Opisany sposób pozwala na zmniejszenie obcia¬ zenia urzadzen w pierwszej filtracji, natomiast wymaga zuzycia wiejkszej ilosci ciepla dla otrzy¬ mania pozadanej temperatury w drugiej filtracji.; Przyklad IV. Zawiesine pochodzaca z ope¬ racji regeneracji amoniaku oraz zawiesine wod^a z operacji oczyszczania solanki i filtrat z konco¬ wej filtracji miesza sie razem, nastepnie zageszcza w odstojniku do stezenia okolo 12% wagowych cia¬ la stalego. Zageszczona zawiesine filtruje sie, a osad o zawartosci ponizej 50% wag. wody i tem¬ peraturze okolo 75°C miesza sie z goraca woda dla uzyskania temperatury okolo 80°C i ponow¬ nie filtruje. Otrzymuje sie osad o zawartosci po¬ nizej 50% wagowych wody i temperaturze okolo 70°C.The described method allows the load to be reduced devices in the first filtration, while requires more heat to be consumed mania of the desired temperature in the second filtration; Example IV. Suspension derived from the op for ammonia regeneration and water suspension from the brine purification operation and the final filtrate filtration is mixed together, then thickened in a decanter to a concentration of about 12% body weight la permanent. The concentrated suspension is filtered, and the sediment with a content of less than 50 wt. water and temperature At temperatures around 75 ° C it is mixed with hot water to obtain a temperature of about 80 ° C and again does not filter. A precipitate is obtained with a content of approx 50% by weight of water and a temperature of approx 70 ° C.
Zawiesine tak zwanego „przepalu" pochodzaca z operacji wypalania kamienia wapiennego, filtru¬ je sie oddzielnie^ a uzyskany osad o zawartosci okolo 30% wagowych wody, miesza sie z osadem z koncowej filtracji pozostalych zawiesin, otrzy¬ mujac po zmieszaniu osad o zawartosci ponizej 45% wagowych wody.Suspension of the so-called "burn" originating from the operations of burning limestone, filter they eat separately ^ and the resulting sediment contains about 30% by weight of water is mixed with the sediment from the final filtration of the residual suspensions obtained having after mixing the sediment with the content below 45% by weight of water.
Filtrat z filtracji tak zwanego „przepalu" moze byc uzyty do hydratyzacji mleka wapiennego. Osad' suszy sie i moze byc wykorzystany jako nawóz wajpniowy posodowy.The filtrate from the filtration of the so-called "burn" can be used to hydrate milk of lime. Precipitate' it is dried and can be used as fertilizer wajpnia posoda.
Sjposób powyzszy pozwala na obnizenie zuzycia ciepla w operacji suszenia osadów, natomiast wy¬ maga wiekszego zuzycia roztworów nie zawieraja¬ cych jonów chlorkowych w operacji mieszania szlamów przed druga filtracja dla otrzymania po¬ zadanego koncowego stezenia jonów chlorkowych w osadzie poddawanym suszeniu.5 100 943 6This way the consumption can be lowered heat in the sludge drying operation, while the magician does not consume more of the solutions chloride ions in the mixing operation of the sludge before the second filtration to obtain the purification the desired final concentration of chloride ions in the sludge undergoing drying 5 100 943 6
Claims (4)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL17680374A PL100943B1 (en) | 1974-12-23 | 1974-12-23 | METHOD OF TREATMENT OF WASTE PRODUCTS ARISING IN THE PROCESS OF OBTAINING SODIUM SOLVAY'S METHOD FOR FURTHER PROCESSING INTO USEFUL PRODUCTS |
| DE19752552899 DE2552899C3 (en) | 1974-12-23 | 1975-11-25 | Process for processing the solid and liquid waste generated in the process for producing soda according to the Solvay process for the production of soda-lime fertilizer |
| DD19006275A DD121919A5 (en) | 1974-12-23 | 1975-12-11 | |
| BE163064A BE837019A (en) | 1974-12-23 | 1975-12-23 | WASTE PRODUCTS DEPURATION PROCESS |
| FR7539595A FR2295931A1 (en) | 1974-12-23 | 1975-12-23 | Purifying waste liquor - from e.g. sodium carbonate prodn., ammonia regeneration, brine purifcn etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL17680374A PL100943B1 (en) | 1974-12-23 | 1974-12-23 | METHOD OF TREATMENT OF WASTE PRODUCTS ARISING IN THE PROCESS OF OBTAINING SODIUM SOLVAY'S METHOD FOR FURTHER PROCESSING INTO USEFUL PRODUCTS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL100943B1 true PL100943B1 (en) | 1978-11-30 |
Family
ID=19970286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL17680374A PL100943B1 (en) | 1974-12-23 | 1974-12-23 | METHOD OF TREATMENT OF WASTE PRODUCTS ARISING IN THE PROCESS OF OBTAINING SODIUM SOLVAY'S METHOD FOR FURTHER PROCESSING INTO USEFUL PRODUCTS |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE837019A (en) |
| DD (1) | DD121919A5 (en) |
| DE (1) | DE2552899C3 (en) |
| FR (1) | FR2295931A1 (en) |
| PL (1) | PL100943B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2618003C3 (en) * | 1976-04-24 | 1981-09-17 | Chemische Fabrik Kalk GmbH, 5000 Köln | Process for the separation of the solids from the final liquors of ammonia soda plants |
| EP3670482A1 (en) | 2018-12-21 | 2020-06-24 | Solvay Sa | Process for the production of a lime fertilizer |
-
1974
- 1974-12-23 PL PL17680374A patent/PL100943B1/en unknown
-
1975
- 1975-11-25 DE DE19752552899 patent/DE2552899C3/en not_active Expired
- 1975-12-11 DD DD19006275A patent/DD121919A5/xx unknown
- 1975-12-23 BE BE163064A patent/BE837019A/en unknown
- 1975-12-23 FR FR7539595A patent/FR2295931A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2295931B1 (en) | 1978-05-19 |
| DE2552899A1 (en) | 1976-07-01 |
| DE2552899C3 (en) | 1980-09-04 |
| DE2552899B2 (en) | 1980-01-10 |
| FR2295931A1 (en) | 1976-07-23 |
| DD121919A5 (en) | 1976-09-05 |
| BE837019A (en) | 1976-04-16 |
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