NO885031L - PROCEDURE FOR THE TREATMENT OF A POLYSACCARIDE FLUID. - Google Patents
PROCEDURE FOR THE TREATMENT OF A POLYSACCARIDE FLUID.Info
- Publication number
- NO885031L NO885031L NO88885031A NO885031A NO885031L NO 885031 L NO885031 L NO 885031L NO 88885031 A NO88885031 A NO 88885031A NO 885031 A NO885031 A NO 885031A NO 885031 L NO885031 L NO 885031L
- Authority
- NO
- Norway
- Prior art keywords
- liquid
- siliceous material
- contact
- filterability
- treatment
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229920001282 polysaccharide Polymers 0.000 title claims abstract description 12
- 239000012530 fluid Substances 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 12
- 150000004676 glycans Chemical class 0.000 claims abstract description 11
- 239000005017 polysaccharide Substances 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 23
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 229920002305 Schizophyllan Polymers 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- FEBUJFMRSBAMES-UHFFFAOYSA-N 2-[(2-{[3,5-dihydroxy-2-(hydroxymethyl)-6-phosphanyloxan-4-yl]oxy}-3,5-dihydroxy-6-({[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}methyl)oxan-4-yl)oxy]-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl phosphinite Chemical compound OC1C(O)C(O)C(CO)OC1OCC1C(O)C(OC2C(C(OP)C(O)C(CO)O2)O)C(O)C(OC2C(C(CO)OC(P)C2O)O)O1 FEBUJFMRSBAMES-UHFFFAOYSA-N 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 claims description 4
- 239000005909 Kieselgur Substances 0.000 claims description 4
- 229920001285 xanthan gum Polymers 0.000 claims description 4
- WDQLRUYAYXDIFW-RWKIJVEZSA-N (2r,3r,4s,5r,6r)-4-[(2s,3r,4s,5r,6r)-3,5-dihydroxy-4-[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]oxan-2-yl]oxy-6-(hydroxymethyl)oxane-2,3,5-triol Chemical compound O[C@@H]1[C@@H](CO)O[C@@H](O)[C@H](O)[C@H]1O[C@H]1[C@H](O)[C@@H](O[C@H]2[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)O)[C@H](O)[C@@H](CO[C@H]2[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)O)O1 WDQLRUYAYXDIFW-RWKIJVEZSA-N 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- -1 alkali metal salt Chemical class 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 15
- 238000001914 filtration Methods 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 8
- 238000000855 fermentation Methods 0.000 description 6
- 230000004151 fermentation Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000002538 fungal effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241000233866 Fungi Species 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 241001530056 Athelia rolfsii Species 0.000 description 1
- 241000222481 Schizophyllum commune Species 0.000 description 1
- 241001558929 Sclerotium <basidiomycota> Species 0.000 description 1
- 241000589636 Xanthomonas campestris Species 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
- C09K8/905—Biopolymers
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
- C12P19/06—Xanthan, i.e. Xanthomonas-type heteropolysaccharides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Genetics & Genomics (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Filtering Materials (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Det beskrives en fremgangsmåte for rensing av en polysak-karidveske for å eke dens filtrerbarhet.Fremgangsmåten bestar i å behandle en veske Bed et kiselholdig materiale ved en temperatur på minst 60°C.Den oppnådde vesken anvendes ved assistert oljeutvinning.A process for purifying a polysaccharide liquid to increase its filterability is described. The process consists in treating a liquid bed of a silicon-containing material at a temperature of at least 60 ° C.
Description
Foreliggende oppfinnelse gjelder en fremgangsmåte for rensing av en polysakkaridvæske for å øke dens filtrerbarhet. Den gjelder også den forbedrede permenteringsvæsken som så nær resultatet av denne fremgangsmåten. The present invention relates to a method for purifying a polysaccharide liquid in order to increase its filterability. It also applies to the improved fermentation liquid which is so close to the result of this method.
Polysakkaridvæske oppnås ved hjelp av en velkjent perment-eringsprosess: en mikroorganisme (sopp, bakterier) som produserer polysakkarid, f.eks. en skleroglukan-produserende sopp av sklerotium type, virker i et vandig næringsmedium inneholdende et karbohydrat. Polysaccharide liquid is obtained by means of a well-known fermentation process: a microorganism (fungi, bacteria) that produces polysaccharide, e.g. a scleroglucan-producing fungus of the sclerotium type, works in an aqueous nutrient medium containing a carbohydrate.
Sclerotium rolfsii kan f.eks. anvendes for fremstilling av skleroglukan. Når det gjelder fremstilling av schizofylan og av xantan, kan henholdsvis soppen Schizophyllum Commune og bakterien Xantomonas Campestris anvendes. Sclerotium rolfsii can e.g. is used for the production of scleroglucan. When it comes to the production of schizophyllan and xanthan, respectively, the fungus Schizophyllum Commune and the bacterium Xantomonas Campestris can be used.
Etter fermenteringen oppnås en fermenterings-væske omfattende ca. 0,5 til 4 vekt% polysakkarid så vel som salter, gjenværende næringselementer, celler eller sopprester og andre uløselige forbindelser. After the fermentation, a fermentation liquid comprising approx. 0.5 to 4% by weight polysaccharide as well as salts, residual nutrients, cells or fungal residues and other insoluble compounds.
De uløselige partiklene i den rå væsken, som f.eks. cellerester, kan fjernes ved filtrering. Det har kommet mange forslag for denne fremgangsmåten. U.S.-patentskrift nr. 4.337.157 foreslår f.eks. filtrering ved hjelp av mineraler av kalsiumsilikat- eller magnesiumoksyd-typen, som naturligvis har en basis pH. U.S.-patentskrift nr. 4.119.491 foreslår en enzymatisk klaring-filtrering, som ødelegger og fjerner cellerester. The insoluble particles in the raw liquid, such as cell debris, can be removed by filtration. There have been many proposals for this procedure. U.S. Patent No. 4,337,157 suggests e.g. filtration using minerals of the calcium silicate or magnesium oxide type, which naturally have a basic pH. U.S. Patent No. 4,119,491 proposes an enzymatic clarification filtration, which destroys and removes cell debris.
Etter filtrering er det fortsatt noen forurensninger av protein-typen igjen, som forårsaker vekst av makromolekylære aggregater som er vanskelige å filtrere, viser en tettende oppførsel og kan tette porene i underjordiske formasjoner under assisterte utvinningsoperasjoner. After filtration, some protein-type contaminants still remain, which cause the growth of macromolecular aggregates that are difficult to filter, show a clogging behavior and can clog the pores of underground formations during assisted extraction operations.
Disse restene av protein-typen kan fjernes ved oppvarming av væsken og så ultrafiltrering, som foreslått i U.S.-patent-skrift nr. 4.299.825, eller ved oppvarming og filtrering som foreslått i U.S.-patentskrift nr. 3.355.447. These protein-type residues can be removed by heating the liquid and then ultrafiltration, as suggested in U.S. Patent No. 4,299,825, or by heating and filtration as suggested in U.S. Patent No. 3,355,447.
De resultater som er oppnådd med de beskrevne fremgangs-måtene later mye tilbake å ønske og en annen fremgangsmåte, som gjør det mulig og oppnå en polymer med god filtrerbarhet og, fremfor alt, en filtrerbarhet som vil være stabil i lengre tid, er nødvendig. The results obtained with the described methods leave much to be desired and another method, which makes it possible to obtain a polymer with good filterability and, above all, a filterability which will be stable for a longer time, is necessary.
Fremgangsmåten ifølge oppfinnelsen for behandling av en polysakkaridvæske som tidligere er filtrert for å fjerne minst hoveddelen av celle- eller sopprestene fra dem omfatter at: Væsken bringes i kontakt med et materiale av den kiselholdige typen, f.eks. silikagel, f.eks. ved omrøring eller ved å la væsken strømme gjennom det kiselholdige materialet, ved en temperatur på minst 50°C, f.eks. 50-130°C. The method according to the invention for treating a polysaccharide liquid that has previously been filtered to remove at least the main part of the cell or fungal remains from them comprises that: The liquid is brought into contact with a material of the siliceous type, e.g. silica gel, e.g. by stirring or by allowing the liquid to flow through the siliceous material, at a temperature of at least 50°C, e.g. 50-130°C.
Væsken kan enten være en rå, forhånds-filtrert fermenteringsvæske eller en løsning av et pulverformig polysakkarid som er ekstrahert fra en slik væske. The liquid can either be a raw, pre-filtered fermentation liquid or a solution of a powdered polysaccharide extracted from such a liquid.
De foretrukne utførelsesformene av oppfinnelsen beskrives nedenfor: Mens væsken holdes i kontakt med de kiselholdige partiklene, varierer polymer-konsentrasjonen i væsken fordelaktig fra 0,5 til 100 g/l. Valget av kiselholdig materiale er ikke avgjørende, og gode resultater er f.eks. oppnådd med silikageler, diatoméjord og naturlig sand. The preferred embodiments of the invention are described below: While the liquid is kept in contact with the silica-containing particles, the polymer concentration in the liquid varies advantageously from 0.5 to 100 g/l. The choice of siliceous material is not decisive, and good results are e.g. obtained with silica gels, diatomaceous earth and natural sand.
Under behandlingen varierer pH fordelaktig fra 5 til 11, fortrinnsvis fra 6 til 8, og saltinnholdet varierer fortrinnsvis fra 0,1 til 20 g/l, uttrykt i NaCl, av ett eller flere alkalimetall-salter. Det anvendes 1 til 100 kg, fortrinnsvis 5 til 40 kg kiselholdig materiale pr. m<3>væske. During the treatment, the pH advantageously varies from 5 to 11, preferably from 6 to 8, and the salt content preferably varies from 0.1 to 20 g/l, expressed in NaCl, of one or more alkali metal salts. 1 to 100 kg, preferably 5 to 40 kg, of siliceous material is used per m<3>liquid.
Varigheten av kontakt- og oppvarmings-temperaturen avhenger av det ønskede resultat og av naturen av polysakkaridet: den går fortrinnsvis fra 1 til 24 timer ved 70-110°C for skleroglukan og skitzofylan, og fra 5 til 60 minutter ved 50-110°C for xantan. The duration of the contact and heating temperature depends on the desired result and on the nature of the polysaccharide: it preferably lasts from 1 to 24 hours at 70-110°C for scleroglucan and schizophyllan, and from 5 to 60 minutes at 50-110°C for xanthan.
Den væske som underkastes behandlingen med et kiselholdig materiale er på forhånd renset for cellerester ved hjelp av en adekvat behandling ifølge en av de vel kjente teknikkene, The liquid which is subjected to the treatment with a siliceous material is previously cleaned of cell residues by means of an adequate treatment according to one of the well-known techniques,
f.eks. filtrering på diatomejord, for å fjerne minst 90% av rester som er større enn 2 0 pm og fortrinnsvis minst 90% av rester som er større enn 1 yim. e.g. filtration on diatomaceous earth, to remove at least 90% of residues larger than 20 µm and preferably at least 90% of residues larger than 1 µm.
Følgende sammenligningseksempler illustrerer gjennomfør-ingen av oppfinnelsen. The following comparative examples illustrate the implementation of the invention.
Eksempel 1Example 1
Testen gjelder en væske som er forhåndsfiltrert gjennom diatomejord med en partikkelstørrelse som i hovedsak ligger mellom 10 pm og 80 pm. Etter filtreringen er mer enn 90% av rester som er større enn 10 pm således fjernet. Skleroglukan-væsken med en polymerkonsentrasjon på 3 g/l bringes ved en temperatur på 90°C i direkte kontakt med silisiumdioksyd-partikler med en spesifikk overflate på 200 m<2>/g med en hastighet på 40 kg silisium dioksyd pr. m<3>væske. Kontaktvarigheten er 24 timer. Løsningene av væske før og etter behandlingen (løsningen Ia og Ila) fortynnes med destillert vann inntil de oppnår en konsentrasjon på 250 vektdeler ppm og underkastes en filtrerbarhetstest. Denne filtrerbarhetstesten består i å injisere, ved lave skjærhastighets-betingelser ("Y = 5 s-<1>) og ved 90°C, polymerløsningen gjennom en blokk av silisiumkarbid-partikler med en permeabilitet på 400 m Darcy. Mobilitetsreduksjonen (R) i blokken bestemmes overensstemmende med det filtrerte volumet (V). Mobilitetsreduksjonen er AP polymer/AP vann-forholdet, hvor AP polymer er trykkfallet for polysakkaridløsningen og AP vann er trykkfallet for den tilsvarende vandige fase uten polysakkarid. The test applies to a liquid that has been pre-filtered through diatomaceous earth with a particle size that is mainly between 10 pm and 80 pm. After the filtration, more than 90% of residues larger than 10 µm have thus been removed. The scleroglucan liquid with a polymer concentration of 3 g/l is brought at a temperature of 90°C into direct contact with silicon dioxide particles with a specific surface area of 200 m<2>/g at a rate of 40 kg of silicon dioxide per minute. m<3>liquid. The contact duration is 24 hours. The solutions of liquid before and after the treatment (solution Ia and Ila) are diluted with distilled water until they reach a concentration of 250 ppm by weight and are subjected to a filterability test. This filterability test consists of injecting, at low shear rate conditions ("Y = 5 s-<1>) and at 90°C, the polymer solution through a block of silicon carbide particles with a permeability of 400 m Darcy. The mobility reduction (R) in the block is determined according to the filtered volume (V).The mobility reduction is the AP polymer/AP water ratio, where AP polymer is the pressure drop for the polysaccharide solution and AP water is the pressure drop for the corresponding aqueous phase without polysaccharide.
Figur 1 viser de tester som tilsvarer en forhåndsfiltrert løsning som ikke er behandlet med silisiumdioksyd Ia og som er behandlet ifølge oppfinnelsen Ila. Det kan konstateres at den første løsningen raskt tetter filtrene og at den behandlede løsningen oppviser en utmerket filtrerbarhet. Figure 1 shows the tests corresponding to a pre-filtered solution which has not been treated with silicon dioxide Ia and which has been treated according to the invention Ila. It can be stated that the first solution quickly clogs the filters and that the treated solution exhibits excellent filterability.
Dersom den behandling som er beskrevet ovenfor gjentas nøyaktig, bortsett fra temperaturen, som holdes på 30°C, er filtrerbarheten for det oppnådde produktet ikke så god som filtrerbarheten for det produkt som er behandlet ifølge oppfinnelsen, slik kurve Illa i Figur 1 viser. Dersom behandlingen ifølge oppfinnelsen, d.v.s. ved å bringe væsken i kontakt med silisiumdioksyd ved 90°C, anvendes på en rå væske som ikke er forhåndsfiltrert og inneholder sopprester, er filtrerbarheten for væsken av den tettende typen (kurve IVa), hvilket viser at det er nødvendig å fjerne de uløselige restene før behandlingen ifølge oppfinnelsen utføres. If the treatment described above is repeated exactly, apart from the temperature, which is kept at 30°C, the filterability of the product obtained is not as good as the filterability of the product treated according to the invention, as curve Illa in Figure 1 shows. If the treatment according to the invention, i.e. by bringing the liquid into contact with silica at 90°C, applied to a raw liquid which has not been pre-filtered and contains fungal residues, the filterability of the liquid is of the sealing type (curve IVa), showing that it is necessary to remove the insoluble residues before the treatment according to the invention is carried out.
Eksempel 2Example 2
En rå Xanthomonas Campestris-fermenteringsvæske er fortynnet for å oppnå en konsentrasjon på 500 vektdeler ppm. Dens alkalimetall konsentrasjon er brakt til 5 g/l, uttrykt i NaCl, etter tilsetning av natriumklorid. A crude Xanthomonas Campestris fermentation broth is diluted to achieve a concentration of 500 ppm by weight. Its alkali metal concentration is brought to 5 g/l, expressed in NaCl, after the addition of sodium chloride.
Polymerløsningen er renset for bakterieceller som er større enn ca. 5 pm ved filtrering, brakt til 60°C og så brakt i kontakt med silisiumdioksyd-partikler (40 kg pr. m<3>) med spesifikk overflate på 200 m<2>/g. Kontaktvarigheten er 15 minutter. The polymer solution is cleaned of bacterial cells that are larger than approx. 5 pm by filtration, brought to 60°C and then brought into contact with silicon dioxide particles (40 kg per m<3>) with a specific surface area of 200 m<2>/g. The contact duration is 15 minutes.
Løsningene før og etter behandlingen bringes til en konsentrasjon på 300 deler ppm ved fortynning med vann omfattende 5 g/l natriumklorid og underkastet en filtrerbarhetstest. The solutions before and after treatment are brought to a concentration of 300 parts ppm by dilution with water containing 5 g/l sodium chloride and subjected to a filterability test.
Filtrerbarhetstesten besto i å injisere, under lave skjær-hastighetsbetingelser (7=5s-<1>) og ved 30°C, polymerløsningen gjennom tre milliporefiltere med en gjennomsnittlig pore-diameter på 5 pm og bestemme mobilitetsreduksjonen (R) i filtrene overensstemmende med det filtrerte volumet (V). The filterability test consisted of injecting, under low shear rate conditions (7=5s-<1>) and at 30°C, the polymer solution through three millipore filters with an average pore diameter of 5 pm and determining the mobility reduction (R) in the filters corresponding to filtered volume (V).
Figur 2 viser resultatene av testene tilsvarende en løsning som ikke er behandlet (Ib) og en løsning som er underkastet behandlingen ifølge oppfinnelsen (Ilb). Det kan konstateres at den første løsningen fører til tetting av filtrene, mens den løsning som er behandlet ifølge oppfinnelsen oppviser en konstant R, d.v.s. en utmerket filtrerbarhet. Figure 2 shows the results of the tests corresponding to a solution that has not been treated (Ib) and a solution that has been subjected to the treatment according to the invention (Ilb). It can be established that the first solution leads to clogging of the filters, while the solution treated according to the invention exhibits a constant R, i.e. an excellent filterability.
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8715664A FR2623207B1 (en) | 1987-11-13 | 1987-11-13 | PROCESS FOR THE PURIFICATION OF A POLYSACCHARIDE MUST WITH THE PURPOSE OF INCREASING THE FILTRABILITY AND USE OF THE PURIFIED MUST IN ASSISTED OIL RECOVERY |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO885031D0 NO885031D0 (en) | 1988-11-11 |
| NO885031L true NO885031L (en) | 1989-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO88885031A NO885031L (en) | 1987-11-13 | 1988-11-11 | PROCEDURE FOR THE TREATMENT OF A POLYSACCARIDE FLUID. |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH01153787A (en) |
| CA (1) | CA1324776C (en) |
| DE (1) | DE3838352C2 (en) |
| FR (1) | FR2623207B1 (en) |
| GB (1) | GB2212811B (en) |
| NO (1) | NO885031L (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103384711B (en) * | 2011-02-16 | 2017-03-15 | 温特沙尔控股有限公司 | Method by mineral oil is exploited in the mineral oil reservoir with high reservoir temperature |
| US9206348B2 (en) | 2011-02-16 | 2015-12-08 | Wintershall Holding GmbH | Process for mineral oil production from mineral oil deposits with high deposit temperature |
| CN109153911A (en) * | 2016-03-28 | 2019-01-04 | 嘉吉公司 | Solvable and filterable biopolymer solid |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3711462A (en) * | 1970-04-01 | 1973-01-16 | Mobil Oil | Method of clarifying polysaccharide solutions |
| US4135979A (en) * | 1976-08-24 | 1979-01-23 | Merck & Co., Inc. | Treatment of xanthan gum to improve clarity |
| US4119491A (en) * | 1977-05-16 | 1978-10-10 | Shell Oil Company | Enzyme-filtration clarification of xanthan gum polymer solution |
| US4337157A (en) * | 1978-03-17 | 1982-06-29 | Manville Service Corporation | Biopolymer filtration process |
| US4299825A (en) * | 1980-07-03 | 1981-11-10 | Celanese Corporation | Concentrated xanthan gum solutions |
| DE3643467A1 (en) * | 1986-12-19 | 1988-06-30 | Wintershall Ag | METHOD FOR THE EXTRACELLULAR PRODUCTION OF NONIONIC BIOPOLYMERS AND THE USE THEREOF |
| AU608713B2 (en) * | 1988-06-16 | 1991-04-11 | Standard Oil Company, The | The production of polysaccharides from filamentous fungi |
-
1987
- 1987-11-13 FR FR8715664A patent/FR2623207B1/en not_active Expired - Fee Related
-
1988
- 1988-11-10 CA CA000582840A patent/CA1324776C/en not_active Expired - Fee Related
- 1988-11-11 JP JP63286616A patent/JPH01153787A/en active Pending
- 1988-11-11 GB GB8826391A patent/GB2212811B/en not_active Expired - Fee Related
- 1988-11-11 NO NO88885031A patent/NO885031L/en unknown
- 1988-11-11 DE DE3838352A patent/DE3838352C2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB8826391D0 (en) | 1988-12-14 |
| NO885031D0 (en) | 1988-11-11 |
| GB2212811A (en) | 1989-08-02 |
| CA1324776C (en) | 1993-11-30 |
| GB2212811B (en) | 1991-06-05 |
| DE3838352C2 (en) | 1999-01-07 |
| FR2623207A1 (en) | 1989-05-19 |
| DE3838352A1 (en) | 1989-05-24 |
| FR2623207B1 (en) | 1990-05-18 |
| JPH01153787A (en) | 1989-06-15 |
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