WO2017047616A1 - 原油分散安定剤 - Google Patents
原油分散安定剤 Download PDFInfo
- Publication number
- WO2017047616A1 WO2017047616A1 PCT/JP2016/077055 JP2016077055W WO2017047616A1 WO 2017047616 A1 WO2017047616 A1 WO 2017047616A1 JP 2016077055 W JP2016077055 W JP 2016077055W WO 2017047616 A1 WO2017047616 A1 WO 2017047616A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crude oil
- mol
- mass
- vinyl
- dispersion stabilizer
- Prior art date
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- 239000010779 crude oil Substances 0.000 title claims abstract description 133
- 239000006185 dispersion Substances 0.000 title claims abstract description 78
- 239000003381 stabilizer Substances 0.000 title claims abstract description 32
- 238000007127 saponification reaction Methods 0.000 claims abstract description 31
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 26
- 125000000686 lactone group Chemical group 0.000 claims abstract description 12
- 229920000642 polymer Polymers 0.000 claims abstract description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 48
- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 238000006116 polymerization reaction Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000839 emulsion Substances 0.000 abstract description 7
- 239000000470 constituent Substances 0.000 abstract description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 39
- 239000000178 monomer Substances 0.000 description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- -1 thiol compound Chemical class 0.000 description 15
- 239000004372 Polyvinyl alcohol Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 14
- 239000000295 fuel oil Substances 0.000 description 14
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 13
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 13
- 229920001567 vinyl ester resin Polymers 0.000 description 12
- 150000002596 lactones Chemical group 0.000 description 11
- 239000000243 solution Substances 0.000 description 11
- 150000003839 salts Chemical class 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 7
- 239000008186 active pharmaceutical agent Substances 0.000 description 7
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 6
- 239000010426 asphalt Substances 0.000 description 5
- 229920002689 polyvinyl acetate Polymers 0.000 description 5
- 239000011118 polyvinyl acetate Substances 0.000 description 5
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 5
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 4
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000001804 emulsifying effect Effects 0.000 description 3
- 239000001530 fumaric acid Substances 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 3
- 239000011976 maleic acid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920001451 polypropylene glycol Polymers 0.000 description 3
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 2
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 description 2
- ATVJXMYDOSMEPO-UHFFFAOYSA-N 3-prop-2-enoxyprop-1-ene Chemical compound C=CCOCC=C ATVJXMYDOSMEPO-UHFFFAOYSA-N 0.000 description 2
- OZAIFHULBGXAKX-VAWYXSNFSA-N AIBN Substances N#CC(C)(C)\N=N\C(C)(C)C#N OZAIFHULBGXAKX-VAWYXSNFSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000003926 acrylamides Chemical class 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- 150000001991 dicarboxylic acids Chemical class 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- LAYAKLSFVAPMEL-UHFFFAOYSA-N 1-ethenoxydodecane Chemical compound CCCCCCCCCCCCOC=C LAYAKLSFVAPMEL-UHFFFAOYSA-N 0.000 description 1
- QJJDJWUCRAPCOL-UHFFFAOYSA-N 1-ethenoxyoctadecane Chemical compound CCCCCCCCCCCCCCCCCCOC=C QJJDJWUCRAPCOL-UHFFFAOYSA-N 0.000 description 1
- OVGRCEFMXPHEBL-UHFFFAOYSA-N 1-ethenoxypropane Chemical compound CCCOC=C OVGRCEFMXPHEBL-UHFFFAOYSA-N 0.000 description 1
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 1
- PGYJSURPYAAOMM-UHFFFAOYSA-N 2-ethenoxy-2-methylpropane Chemical compound CC(C)(C)OC=C PGYJSURPYAAOMM-UHFFFAOYSA-N 0.000 description 1
- RUMACXVDVNRZJZ-UHFFFAOYSA-N 2-methylpropyl 2-methylprop-2-enoate Chemical compound CC(C)COC(=O)C(C)=C RUMACXVDVNRZJZ-UHFFFAOYSA-N 0.000 description 1
- CFVWNXQPGQOHRJ-UHFFFAOYSA-N 2-methylpropyl prop-2-enoate Chemical compound CC(C)COC(=O)C=C CFVWNXQPGQOHRJ-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- OFNISBHGPNMTMS-UHFFFAOYSA-N 3-methylideneoxolane-2,5-dione Chemical compound C=C1CC(=O)OC1=O OFNISBHGPNMTMS-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- OSDWBNJEKMUWAV-UHFFFAOYSA-N Allyl chloride Chemical compound ClCC=C OSDWBNJEKMUWAV-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- HETCEOQFVDFGSY-UHFFFAOYSA-N Isopropenyl acetate Chemical compound CC(=C)OC(C)=O HETCEOQFVDFGSY-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 1
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000006359 acetalization reaction Methods 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000006136 alcoholysis reaction Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- GFJVXXWOPWLRNU-UHFFFAOYSA-N ethenyl formate Chemical compound C=COC=O GFJVXXWOPWLRNU-UHFFFAOYSA-N 0.000 description 1
- QBDADGJLZNIRFQ-UHFFFAOYSA-N ethenyl octanoate Chemical compound CCCCCCCC(=O)OC=C QBDADGJLZNIRFQ-UHFFFAOYSA-N 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- SENKOTRUJLHKFM-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate;2-methylprop-2-enoic acid Chemical class CC(=C)C(O)=O.CCOC(=O)C(C)=C SENKOTRUJLHKFM-UHFFFAOYSA-N 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- OKKJLVBELUTLKV-VMNATFBRSA-N methanol-d1 Chemical compound [2H]OC OKKJLVBELUTLKV-VMNATFBRSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- WFKDPJRCBCBQNT-UHFFFAOYSA-N n,2-dimethylprop-2-enamide Chemical compound CNC(=O)C(C)=C WFKDPJRCBCBQNT-UHFFFAOYSA-N 0.000 description 1
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 description 1
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 1
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 description 1
- DNTMQTKDNSEIFO-UHFFFAOYSA-N n-(hydroxymethyl)-2-methylprop-2-enamide Chemical compound CC(=C)C(=O)NCO DNTMQTKDNSEIFO-UHFFFAOYSA-N 0.000 description 1
- ZIWDVJPPVMGJGR-UHFFFAOYSA-N n-ethyl-2-methylprop-2-enamide Chemical compound CCNC(=O)C(C)=C ZIWDVJPPVMGJGR-UHFFFAOYSA-N 0.000 description 1
- SWPMNMYLORDLJE-UHFFFAOYSA-N n-ethylprop-2-enamide Chemical compound CCNC(=O)C=C SWPMNMYLORDLJE-UHFFFAOYSA-N 0.000 description 1
- YPHQUSNPXDGUHL-UHFFFAOYSA-N n-methylprop-2-enamide Chemical compound CNC(=O)C=C YPHQUSNPXDGUHL-UHFFFAOYSA-N 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 description 1
- FSAJWMJJORKPKS-UHFFFAOYSA-N octadecyl prop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C=C FSAJWMJJORKPKS-UHFFFAOYSA-N 0.000 description 1
- 239000003027 oil sand Substances 0.000 description 1
- 125000005702 oxyalkylene group Chemical group 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- HVAMZGADVCBITI-UHFFFAOYSA-M pent-4-enoate Chemical compound [O-]C(=O)CCC=C HVAMZGADVCBITI-UHFFFAOYSA-M 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- AAYRWMCIKCRHIN-UHFFFAOYSA-N propane-1-sulfonic acid;prop-2-enamide Chemical compound NC(=O)C=C.CCCS(O)(=O)=O AAYRWMCIKCRHIN-UHFFFAOYSA-N 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- GRONZTPUWOOUFQ-UHFFFAOYSA-M sodium;methanol;hydroxide Chemical compound [OH-].[Na+].OC GRONZTPUWOOUFQ-UHFFFAOYSA-M 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 238000006276 transfer reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000004711 α-olefin Substances 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
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
- C09K23/38—Alcohols, e.g. oxidation products of paraffins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F16/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F16/02—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an alcohol radical
- C08F16/04—Acyclic compounds
- C08F16/06—Polyvinyl alcohol ; Vinyl alcohol
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F216/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F216/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an alcohol radical
- C08F216/04—Acyclic compounds
- C08F216/06—Polyvinyl alcohol ; Vinyl alcohol
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- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
- C08F2500/02—Low molecular weight, e.g. <100,000 Da.
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- C08L2201/56—Non-aqueous solutions or dispersions
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- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
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- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
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- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/80—Additives
Definitions
- the present invention relates to a crude oil dispersion stabilizer containing a vinyl alcohol polymer.
- Crude oil typified by heavy oil is unconventional oil with higher viscosity than conventional oil, and its rich reserves are expected to contribute to alleviating the problem of oil depletion.
- heavy oil has high viscosity and poor fluidity, there is a problem that efficient recovery from the oil layer and pipeline transportation are difficult.
- Patent Documents 1 and 2 As a method for improving, recovering and transporting the fluidity of such heavy oil, a technique for reducing the viscosity by emulsifying the heavy oil in an aqueous solution using polyvinyl alcohol (PVA) as a dispersion emulsifier is disclosed.
- PVA polyvinyl alcohol
- Patent Documents 1 and 2 The methods disclosed in Patent Document 1 and Patent Document 2 effectively emulsify from a heavy oil having an API specific gravity of 30 ° or less to a super heavy oil or bitumen having an API specific gravity of 10 ° or less and extremely high viscosity. It can be lowered.
- Patent Document 3 discloses a fuel composition obtained by adding polyvinyl alcohol having a specific saponification degree and absorbance to a mixture containing a liquid hydrocarbon such as a solvent and heavy oil for a long time even at a low temperature. It is disclosed that it can be stored and has adequate fluidity. However, according to the study by the present inventors, the emulsion or fuel composition obtained by these methods has a high viscosity in a short period of time, precipitates are formed, particles are agglomerated and become large. There was a problem that oil was often separated and the stability was poor.
- the present invention has been made in order to solve the above-mentioned problems.
- An object is to provide a dispersion stabilizer.
- the inventors of the present invention have intensively studied to achieve the above object, and as a result, the degree of saponification is more than 70 mol% and 82 mol% or less, and the total content of carboxyl groups and lactone rings is vinyl alcohol heavy.
- a crude oil dispersion stabilizer containing a vinyl alcohol polymer in an amount of 0.02 to 1 mol% with respect to all the structural units of the coal can emulsify a highly viscous crude oil, and the state of the emulsion for a long time.
- the present invention has been found to be able to exist stably over a wide range.
- the above problem is a crude oil dispersion stabilizer containing a vinyl alcohol polymer, wherein the saponification degree of the vinyl alcohol polymer is more than 70 mol% and 82 mol% or less, and the total of carboxyl groups and lactone rings.
- This can be solved by providing a crude oil dispersion stabilizer characterized in that the content is 0.02 to 1 mol% based on the total constituent units of the vinyl alcohol polymer.
- the viscosity average polymerization degree of the vinyl alcohol polymer is preferably 100 to 4000, and is preferably used for crude oil having an API specific gravity of 30 ° or less.
- the subject is a crude oil treating agent comprising the crude oil dispersion stabilizer and water, wherein the crude oil treating agent comprises 0.05 to 40 parts by mass of the crude oil dispersion stabilizer with respect to 100 parts by mass of the crude oil treating agent. It is also solved by providing.
- the subject is a crude oil dispersion containing the crude oil treatment agent and crude oil, comprising 3 to 50 parts by mass of the crude oil treatment agent with respect to 100 parts by mass of the total amount of the crude oil dispersion,
- the problem can also be solved by providing a crude oil dispersion containing 0.001 to 1 part by weight of polymer and 50 to 97 parts by weight of the crude oil.
- the crude oil dispersion stabilizer of the present invention can disperse or emulsify high-viscosity crude oil to reduce the viscosity, and the obtained crude oil dispersion or emulsion can be stably present for a long time.
- the crude oil dispersion stabilizer of the present invention has a saponification degree of more than 70 mol% and 82 mol% or less, and the total content of carboxyl groups and lactone rings is 0.02 with respect to all structural units of the vinyl alcohol polymer. It contains ⁇ 1 mol% of vinyl alcohol polymer. It was revealed that a crude oil dispersion or emulsion having a low viscosity can be obtained by dispersing or emulsifying a crude oil having a high viscosity with the crude oil dispersion stabilizer of the present invention. The crude oil dispersion or emulsion thus obtained does not increase in viscosity in a short time and is excellent in stability.
- the dispersion stability of the crude oil is reduced
- the saponification degree is more than 70 mol% and 82 mol% or less
- the total content of carboxyl groups and lactone rings is 0.02 to 1 mol% with respect to all the structural units of the vinyl alcohol polymer.
- the dispersion stability of the crude oil was excellent. Accordingly, it is possible to efficiently recover the crude oil from the oil reservoir. In addition, transportation by pipeline is also possible.
- the crude oil in the present invention includes crude oil such as heavy oil, bitumen (oil sand), tar, and pitch.
- a crude oil having a high viscosity can be dispersed or emulsified by the crude oil dispersion stabilizer of the present invention.
- the crude oil is preferably a crude oil having an API specific gravity of 30 ° or less. That is, a crude oil dispersion stabilizer used for crude oil having an API specific gravity of 30 ° or less is a preferred embodiment of the present invention.
- the vinyl alcohol polymer used in the present invention has a saponification degree of more than 70 mol% and 82 mol% or less. This makes it possible to obtain the crude oil dispersion stabilizer of the present invention having excellent crude oil dispersion stability.
- the degree of saponification is preferably 71 mol% or more, and more preferably 72 mol% or more.
- the saponification degree is preferably 81 mol% or less. The degree of saponification can be measured according to JIS K6726 (1994).
- the viscosity average degree of polymerization of the vinyl alcohol polymer used in the present invention (hereinafter sometimes simply referred to as the degree of polymerization) is not particularly limited, but is preferably 100 to 4000. From the viewpoint of improving the dispersion stability, the viscosity average polymerization degree is more preferably 150 or more, and further preferably 200 or more. On the other hand, when the viscosity average polymerization degree exceeds 4000, the productivity of the vinyl alcohol polymer may be lowered, more preferably 3500 or less, still more preferably 3000 or less, and 2500 or less. Is particularly preferred.
- the viscosity average degree of polymerization of the vinyl alcohol polymer is a value measured according to JIS K6726 (1994).
- the vinyl alcohol polymer used in the present invention is characterized in that the total content of carboxyl groups and lactone rings is 0.02 to 1 mol% with respect to all structural units of the vinyl alcohol polymer. This makes it possible to obtain the crude oil dispersion stabilizer of the present invention having excellent crude oil dispersion stability.
- the total content is preferably 0.03 mol% or more, more preferably 0.04 mol% or more.
- the total content exceeds 1 mol%, the crude oil dispersion may be separated in a short time.
- the total content is preferably 0.8 mol% or less, more preferably 0.6 mol% or less, and still more preferably 0.4 mol% or less.
- the method for producing the vinyl alcohol polymer used in the present invention is not particularly limited.
- a vinyl ester monomer is copolymerized with a monomer having an ability to form a carboxyl group and a lactone ring.
- a copolymer of a monomer having an epoxy group and a vinyl ester monomer is converted to a chain having a carboxyl group.
- the production method (1) is preferably employed.
- vinyl ester monomer examples include vinyl acetate, vinyl formate, vinyl propionate, vinyl caprylate and vinyl versatate, and among these, vinyl acetate is preferable from an industrial viewpoint.
- Examples of the monomer having the ability to form a lactone ring with a carboxyl group include, for example, unsaturated dicarboxylic acids such as itaconic acid, maleic acid and fumaric acid and salts thereof, or anhydrides or esters thereof; acrylic acid and Salt; methyl acrylate, ethyl acrylate, n-propyl acrylate, i-propyl acrylate, n-butyl acrylate, i-butyl acrylate, t-butyl acrylate, 2-ethylhexyl acrylate, dodecyl acrylate, Acrylic esters such as octadecyl acrylate; methacrylic acid and its salts; methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, i-propyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, methacrylic acid
- the vinyl ester monomer When the vinyl ester monomer is polymerized, other monomers other than the monomer having the ability to form a carboxyl group and a lactone ring are used as long as the gist of the present invention is not impaired. It may be copolymerized with.
- Examples of other monomers that can be used include ⁇ -olefins such as ethylene, propylene, n-butene, isobutylene and 1-hexene; methyl vinyl ether, ethyl vinyl ether, n-propyl vinyl ether, i-propyl vinyl ether, n- Vinyl ethers such as butyl vinyl ether, i-butyl vinyl ether, t-butyl vinyl ether, dodecyl vinyl ether, stearyl vinyl ether; nitriles such as acrylonitrile and methacrylonitrile; vinyl halides such as vinyl chloride and vinyl fluoride; vinylidene chloride, fluorine Vinylidene halides such as vinylidene chloride; allyl compounds such as allyl acetate and allyl chloride; vinylsilyl compounds such as vinyltrimethoxysilane; polyoxyethylene (meth) acrylate Polyoxypropylene (meth) acrylate, poly
- the total content of the carboxyl group and the lactone ring of the vinyl alcohol polymer can be determined from the peak of proton NMR, for example.
- the vinyl alcohol polymer is completely saponified to a saponification degree of 99.95 mol% or more, then thoroughly washed with methanol, and then dried at 90 ° C. under reduced pressure for 2 days to prepare a vinyl alcohol polymer for analysis.
- the prepared vinyl alcohol polymer for analysis is dissolved in DMSO-D 6 and measured at 60 ° C. using proton NMR.
- Acrylic acid, acrylic acid esters, acrylamide and acrylamide derivative monomers are methacrylic acid, methacrylic acid esters, methacrylamide and methacrylamide derivatives using a peak derived from the main chain methine (2.0 ppm).
- the content of the monomer is calculated by a conventional method using a peak (0.6 to 1.1 ppm) derived from a methyl group directly bonded to the main chain.
- the content is calculated by a conventional method using the methine peak of the lactone ring attributed to 4.6 to 5.2 ppm. In the case of (2) and (4), the content was calculated using a peak (2.8 ppm) derived from methylene bonded to a sulfur atom.
- the methylene-derived peak of the terminal carboxyl group or its alkali metal salt belongs to 2.2 ppm (integrated value A) and 2.3 ppm (integrated value B), and the methylene-derived peak of the terminal lactone ring is 2.6 ppm (integrated value).
- the methine-derived peak of the vinyl alcohol unit belongs to 3.5 to 4.15 ppm (integrated value D), and the content of carboxyl group and lactone ring is calculated by the following formula.
- ⁇ represents the amount of modification (mol%)
- the vinyl ester monomer is copolymerized with another monomer other than the monomer having the ability to form a carboxyl group and a lactone ring.
- Carboxyl group and lactone ring content (mol%) 50 ⁇ (A + B + C) ⁇ (100 ⁇ ) / (100 ⁇ D)
- the prepared vinyl alcohol polymer for analysis is dissolved in DMSO-D 6 and measured at 60 ° C. using proton NMR. Using the peak of 4.8 to 5.2 ppm derived from methine in the acetal part, the content is calculated by a conventional method.
- a vinyl alcohol polymer having a high 1,2-glycol bond content obtained by polymerizing a vinyl ester monomer under a temperature condition higher than usual can also be used.
- the content of 1,2-glycol bond is preferably 1.9 mol% or more, more preferably 2.0 mol% or more, and further preferably 2.1 mol% or more.
- the saponification reaction of vinyl ester polymers alcoholysis or hydrolysis using conventionally known basic catalysts such as sodium hydroxide, potassium hydroxide and sodium methoxide, or acidic catalysts such as p-toluenesulfonic acid.
- Decomposition reaction can be applied.
- the solvent used for the saponification reaction include alcohols such as methanol and ethanol; esters such as methyl acetate and ethyl acetate; ketones such as acetone and methyl ethyl ketone; aromatic hydrocarbons such as benzene and toluene.
- the crude oil dispersion stabilizer of the present invention may be added directly to the crude oil, but is preferably used as a crude oil treatment agent obtained by mixing with water. At this time, it is preferable that 0.05 to 40 parts by mass of the crude oil dispersion stabilizer is contained with respect to 100 parts by mass of the total amount of the crude oil treating agent. From the viewpoint of further improving the dispersion stability of the crude oil, the lower limit of the crude oil dispersion stabilizer is more preferably 0.1 parts by mass or more. On the other hand, the upper limit of the crude oil dispersion stabilizer is more preferably 30 parts by mass or less, and still more preferably 20 parts by mass or less.
- a preferred embodiment of the crude oil treating agent comprises 0.05 to 40 parts by mass of the crude oil dispersion stabilizer and 60 to 99.95 parts by mass of water with respect to 100 parts by mass of the total amount of the crude oil treating agent. It is. From the viewpoint of further improving the dispersion stability of crude oil, a crude oil treatment agent containing 0.1 to 30 parts by mass of the crude oil dispersion stabilizer and 70 to 99.9 parts by mass of water is a more preferred embodiment. A crude oil treating agent containing 0.1 to 20 parts by mass of the crude oil dispersion stabilizer and 80 to 99.9 parts by mass of water is a more preferred embodiment.
- the crude oil treating agent is preferably an aqueous solution containing a crude oil dispersion stabilizer.
- the crude oil treating agent may contain a solvent other than water such as alcohol as long as it does not impair the effects of the present invention, and may contain stabilizers, surfactants and the like that are usually used.
- the method for dispersing or emulsifying crude oil using the crude oil treating agent is not particularly limited.
- a method of mixing the crude oil treatment agent and crude oil as a pretreatment for pipeline transportation is a preferred embodiment, and a method of injecting the crude oil treatment material into an oil layer to obtain a dispersed or emulsified crude oil dispersion is also preferred.
- Embodiment. A crude oil reforming method using the crude oil treating agent is also a preferred embodiment.
- the blending ratio when the crude oil is dispersed or emulsified using the crude oil treatment agent is not particularly limited, but the mass ratio of the crude oil treatment agent to the crude oil (crude treatment agent / crude oil) is 3/97 to Preferably it is 50/50. From the viewpoint of further improving the dispersion stability of the crude oil, the mass ratio is more preferably 5/95 to 40/60.
- the crude oil dispersion containing the crude oil treatment agent comprises 3 to 50 parts by mass of the crude oil treatment agent with respect to 100 parts by mass of the total amount of the crude oil dispersion, and 0% of the vinyl alcohol polymer.
- a crude oil dispersion containing 0.001 to 1 part by mass and 50 to 97 parts by mass of the crude oil is a preferred embodiment.
- the content of the crude oil treating agent with respect to 100 parts by mass of the total amount of the crude oil dispersion is preferably 5 to 40 parts by mass from the viewpoint of further improving the dispersion stability of the crude oil.
- the amount is preferably 60 to 95 parts by mass.
- the content of the vinyl alcohol polymer is preferably 0.05 to 0.8 parts by mass from the viewpoint of further improving the dispersion stability of the crude oil.
- the crude oil dispersion thus obtained is preferably used as an energy source.
- a methanol solution of itaconic acid (concentration 5 mass%) was prepared as a comonomer sequential addition solution (hereinafter referred to as a delay solution), and argon was bubbled for 30 minutes.
- the temperature of the reactor was increased, and when the internal temperature reached 60 ° C., 5 parts by mass of 2,2′-azobisisobutyronitrile (AIBN) was added to initiate polymerization.
- AIBN 2,2′-azobisisobutyronitrile
- the prepared delay solution was dropped into the system so that the monomer composition (molar ratio of vinyl acetate and itaconic acid) in the polymerization solution became constant. After polymerization at 60 ° C. for 4.7 hours, the polymerization was stopped by cooling.
- the polymerization rate when the polymerization was stopped was 60%. Subsequently, unreacted monomers were removed while sometimes adding methanol at 30 ° C. under reduced pressure to obtain a methanol solution (concentration 55.6%) of polyvinyl acetate into which itaconic acid was introduced.
- PVA-1 itaconic acid-modified PVA
- Polymerization conditions, saponification conditions, total content of carboxyl groups and lactone rings determined by 1 H-NMR measurement, content of vinyl alcohol units (degree of saponification) and viscosity average degree of polymerization measured according to JIS K6726 (1994) Is shown in Table 1.
- PVA-2 to PVA-9 were synthesized in the same manner as -1. Polymerization conditions, saponification conditions, total content of carboxyl groups and lactone rings determined by 1 H-NMR measurement, content of vinyl alcohol units (degree of saponification) and viscosity average degree of polymerization measured according to JIS K6726 (1994) Is shown in Table 1.
- Example 1 To a glass screw tube, 6 parts by mass of a 0.5 mass% aqueous solution of PVA-1 and 14 parts by mass of heavy oil (35 ° C. viscosity 580 mPa ⁇ s, API specific gravity 11.6) were added, and a magnetic stirrer was used. The mixture was stirred at 1500 rpm for 15 minutes to prepare a crude oil dispersion. The viscosity (A) of the crude oil dispersion immediately after production and the viscosity (B) of the crude oil dispersion after 6 hours at 35 ° C. were measured at 35 ° C. using a B-type viscometer. The obtained results are shown in Table 2. Table 2 shows the value of (B / A) as an index of dispersion stability.
- Examples 2 to 8 A crude oil dispersion was prepared and evaluated in the same manner as in Example 1 except that the type of PVA, the concentration of PVA, the type of crude oil, and the dispersion composition were changed as shown in Table 2.
- the bitumen used in Examples 7 and 8 is from Canada (viscosity at 35 ° C. 66100 mPa ⁇ s, API specific gravity 7.6). The obtained results are shown in Table 2.
- Comparative Example 2 A crude oil dispersion was prepared and evaluated in the same manner as in Comparative Example 1 except that bitumen was used instead of the heavy oil used in Comparative Example 1. The obtained crude oil dispersion immediately formed a sediment, and its viscosity could not be measured. The obtained results are shown in Table 2.
- Comparative Example 3 (heavy oil) in which the total content of carboxyl groups and lactone rings is less than the lower limit
- Comparative Example 4 in which the total content of carboxyl groups and lactone rings exceeds the upper limit
- Comparative Example 5 in which the degree of saponification is below the lower limit
- the viscosity of the crude oil dispersion was high after 6 hours.
- the saponification degree is more than 70 mol% and 82 mol% or less
- the total content of carboxyl groups and lactone rings is 0.02 to 1 mol% with respect to all the structural units of the vinyl alcohol polymer.
- Examples 1 to 8 containing a certain vinyl alcohol polymer the dispersion stability of the crude oil was excellent. Therefore, it can be seen that it is possible to efficiently recover the crude oil from the oil reservoir. It can also be seen that transportation by pipeline is also possible.
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Abstract
Description
P=([η]×10000/8.29)(1/0.62)
カルボキシル基およびラクトン環の含有量(モル%)
=50×(A+B+C)×(100-Δ)/(100×D)
<PVA-1>
(1)攪拌機、還流冷却管、アルゴン導入管、コモノマー添加口及び重合開始剤の添加口を備えた反応器に、酢酸ビニル4500質量部、コモノマーとしてイタコン酸(IA)0.18質量部、及びメタノール7036質量部を仕込み、アルゴンバブリングをしながら30分間系内をアルゴン置換した。これとは別に、コモノマーの逐次添加溶液(以降ディレー溶液と表記する)としてイタコン酸のメタノール溶液(濃度5質量%)を調製し、30分間アルゴンをバブリングした。反応器の昇温を開始し、内温が60℃となったところで、2,2’-アゾビスイソブチロニトリル(AIBN)5質量部を添加し重合を開始した。重合反応の進行中は、調製したディレー溶液を系内に滴下することで、重合溶液におけるモノマー組成(酢酸ビニルとイタコン酸のモル比率)が一定となるようにした。60℃で4.7時間重合した後、冷却して重合を停止した。重合停止時の重合率は60%であった。続いて、30℃、減圧下でメタノールを時々添加しながら未反応のモノマーの除去を行い、イタコン酸が導入されたポリ酢酸ビニルのメタノール溶液(濃度55.6%)を得た。
重合条件(酢酸ビニル、メタノール、AIBN、イタコン酸の仕込み量)とけん化条件(ポリ酢酸ビニルの濃度及び酢酸ビニルユニットに対する水酸化ナトリウムのモル比)を表1に示すように変更したこと以外はPVA-1と同様にして、PVA-2~PVA-9を合成した。重合条件、けん化条件、1H-NMR測定により求めたカルボキシル基とラクトン環の合計含有量、JIS K6726(1994)に準拠して測定したビニルアルコール単位の含有量(けん化度)及び粘度平均重合度を表1に示す。
ガラス製スクリュー管に、PVA-1の0.5質量%水溶液6質量部、重質油(35℃粘度580mPa・s、API比重11.6)14質量部を添加し、マグネチックスターラーを用いて1500rpmで15分間撹拌し、原油分散液を作製した。作製直後の原油分散液の粘度(A)および35℃で6時間経過後の原油分散液の粘度(B)を、B型粘度計を用いて35℃で測定した。得られた結果を表2に示す。また、分散液安定性の指標として、(B/A)の値を表2に示す。
実施例1において、PVAの種類、PVAの濃度、原油の種類、分散液組成を表2に示すように変更した以外は実施例1と同様にして原油分散液を作製し、評価を行った。尚、実施例7及び8で用いたビチューメンはカナダ産(35℃での粘度66100mPa・s、API比重7.6)である。得られた結果を表2に示す。
実施例1で用いたPVA-1に代えてPVA-6を用いた以外は実施例1と同様にして原油分散液を作製し、評価を行った。得られた結果を表2に示す。
比較例1で用いた重質油に代えてビチューメンを用いた以外は比較例1と同様にして原油分散液を作製し、評価を行った。得られた原油分散液は直ちに沈降物を生成し、粘度を測定することができなかった。得られた結果を表2に示す。
実施例1において、PVAの種類を表2に示すように変更した以外は実施例1と同様にして原油分散液を作製し、評価を行った。得られた結果を表2に示す。
Claims (5)
- ビニルアルコール系重合体を含有する原油分散安定剤であって、前記ビニルアルコール系重合体のけん化度が70モル%を超え82モル%以下であり、かつカルボキシル基とラクトン環の合計含有量がビニルアルコール系重合体の全構成単位に対して0.02~1モル%であることを特徴とする原油分散安定剤。
- 前記ビニルアルコール系重合体の粘度平均重合度が100~4000である請求項1記載の原油分散安定剤。
- API比重30°以下の原油に使用する請求項1又は2記載の原油分散安定剤。
- 請求項1~3のいずれか記載の原油分散安定剤と水とを含む原油処理剤であって、原油処理剤の全量100質量部に対して、前記原油分散安定剤を0.05~40質量部含む原油処理剤。
- 請求項4記載の原油処理剤と原油とを含む原油分散液であって、原油分散液の全量100質量部に対して、前記原油処理剤を3~50質量部含み、前記ビニルアルコール系重合体を0.001~1質量部含み、かつ、前記原油を50~97質量部含む原油分散液。
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