EP0475969A1 - Utilisation d'ethers hydroxy mixtes en tant qu'adjuvants pour la deshydratation de solides. - Google Patents
Utilisation d'ethers hydroxy mixtes en tant qu'adjuvants pour la deshydratation de solides.Info
- Publication number
- EP0475969A1 EP0475969A1 EP90908227A EP90908227A EP0475969A1 EP 0475969 A1 EP0475969 A1 EP 0475969A1 EP 90908227 A EP90908227 A EP 90908227A EP 90908227 A EP90908227 A EP 90908227A EP 0475969 A1 EP0475969 A1 EP 0475969A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- general formula
- water
- mixed ethers
- hydroxy mixed
- carbon atoms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007787 solid Substances 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 title description 5
- 238000001035 drying Methods 0.000 title description 2
- JSPLKZUTYZBBKA-UHFFFAOYSA-N trioxidane Chemical class OOO JSPLKZUTYZBBKA-UHFFFAOYSA-N 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 150000002170 ethers Chemical class 0.000 claims abstract description 19
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 12
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 11
- 239000003245 coal Substances 0.000 claims description 21
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 19
- 239000000571 coke Substances 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 abstract description 2
- 238000005187 foaming Methods 0.000 abstract description 2
- 239000004094 surface-active agent Substances 0.000 description 30
- 239000000243 solution Substances 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical class OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 2
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- OXLXSOPFNVKUMU-UHFFFAOYSA-N 1,4-dioctoxy-1,4-dioxobutane-2-sulfonic acid Chemical class CCCCCCCCOC(=O)CC(S(O)(=O)=O)C(=O)OCCCCCCCC OXLXSOPFNVKUMU-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Chemical group CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000001204 arachidyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000006165 cyclic alkyl group Chemical group 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 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
- 238000009533 lab test Methods 0.000 description 1
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001196 nonadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 238000005029 sieve analysis Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/005—Drying solid materials or objects by processes not involving the application of heat by dipping them into or mixing them with a chemical liquid, e.g. organic; chemical, e.g. organic, dewatering aids
Definitions
- the invention relates to the use of hydroxy mixed ethers of the general formula I.
- R 1 is an alkyl group with 1 to 10 carbon atoms
- R 2 is an alkyl group with 8 to 20 carbon atoms and x is a number in the range from 1 to 20, as an aid for the dewatering of water-containing, finely divided solids.
- Hard coal or coke is a central process within the
- Dialkyl sulfosuccinates (US Pat. No. 2,266,954) and nonionic surfactants of the alkylphenol polyglycol ether type [Erzmetall 30, 292 (1977)] have been described as surfactant dewatering aids of the type mentioned above.
- these surfactants have the disadvantage of considerable foam formation, which leads to considerable problems in the processing plants, in particular when water is circulated in the usual way.
- the invention is based on the knowledge that nonionic surfactants of the general formula I when used in Water / solids systems without foaming increase the dewatering speed and lower the residual moisture of the dewatered solids.
- Hydroxy mixed ether of general formula I is an optionally branched or cyclic alkyl group with 1 to 10 carbon atoms, e.g. a methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl or decyl group.
- Alkyl groups with 1 to 4 carbon atoms from the above list are preferred.
- the group R 2 in the general formula I is an alkyl group having 8 to 20 carbon atoms, for example an octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, Octadecyl, nonadecyl or eicosyl group, in particular an alkyl group with 12 to 16 carbon atoms from the above list, with straight-chain radicals R 2 being particularly preferred, x in the general formula I denotes a number in the range from 1 to 20, a range from 2 to 15 is preferred.
- the hydroxy mixed ethers of the general formula I must be water-soluble. It is possible that this water solubility is not sufficient if the hydroxy mixed ethers of the general formula I at long values of x have long-chain radicals R 1 and / or R 2 with chain lengths within the above-mentioned ranges; the required water solubility can, however, be achieved by increasing the value for x within the above-mentioned range.
- hydroxy mixed ethers of the general formula I are described in DE-A 37 23 323; they can be obtained by using ethoxylated alcohols of the general formula II
- hydroxy mixed ethers of general formula I to be used according to the invention can also be present as industrial mixtures.
- the hydroxy mixed ethers of the general formula I are used in an amount of 0.5 to 10, in particular 3 to 8, kg per m 3 of that to be removed from the finely divided solids. Water.
- the hydroxy mixed ethers of the general formula I are particularly suitable for dewatering
- surfactants of the general formula I to be used according to the invention are that they may be present with other surfactants of different composition, for example with dialkyl sulfosuccinates such as di-n-octyl sulfosuccinates or polyacrylamides, which were added to the solids to be dewatered in previous treatment stages. are tolerated.
- dialkyl sulfosuccinates such as di-n-octyl sulfosuccinates or polyacrylamides, which were added to the solids to be dewatered in previous treatment stages. are tolerated.
- the invention is explained in more detail below on the basis of preferred exemplary embodiments.
- the present examples are laboratory tests in which the amounts of surfactant used in kg per 1000 kg of the solids to be dewatered (calculated as
- surfactant used here and below refers to the hydroxy mixed ethers of the general formula I.
- a pressure filter was used, which was a closed filter chute, which was filled with the material to be dewatered.
- the drainage was carried out by applying a pressure of 3 bar to the filter.
- the drainage time was 30 s.
- a filter fabric with a mesh size of 0.2 mm was used as the filter material.
- the tested surfactants the surfactant concentration of the solution with which the coal was treated, the calculated amount of surfactant per 1000 kg of coal and the residual moisture determined are summarized in Table 2.
- a surfactant solution with 0.1 g / l made it possible to lower the residual moisture to 4.0% by weight with a centrifugal value of 111.
- a surfactant solution with 1.0 g / l lowered the residual moisture up to 3.0%. These values can also be achieved with short drainage times.
Abstract
Ces éthers correspondent à la formule générale (I): R1O-(CH2CH2O)x-CH2-CH(OH)R2, où R1 est un groupe alkyle avec 1 à 10 atomes de carbone; R2 est un groupe alkyle avec 8 à 20 atomes de carbone; et x est un chiffre compris entre 1 et 20. Ils peuvent être utilisés pour déshydrater des solides aqueux en fines particules. On obtient ainsi des solides à teneur peu élevée en eau sans formation de mousse dans l'eau éliminée.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3918274 | 1989-06-05 | ||
| DE3918274A DE3918274A1 (de) | 1989-06-05 | 1989-06-05 | Verwendung von hydroxymischethern als hilfsmittel fuer die feststoffentwaesserung |
| PCT/EP1990/000851 WO1990015295A1 (fr) | 1989-06-05 | 1990-05-28 | Utilisation d'ethers hydroxy mixtes en tant qu'adjuvants pour la deshydratation de solides |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0475969A1 true EP0475969A1 (fr) | 1992-03-25 |
| EP0475969B1 EP0475969B1 (fr) | 1994-04-27 |
Family
ID=6382085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90908227A Expired - Lifetime EP0475969B1 (fr) | 1989-06-05 | 1990-05-28 | Utilisation d'ethers hydroxy mixtes en tant qu'adjuvants pour la deshydratation de solides |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5215669A (fr) |
| EP (1) | EP0475969B1 (fr) |
| AU (1) | AU631647B2 (fr) |
| BR (1) | BR9007418A (fr) |
| CA (1) | CA2058440C (fr) |
| DE (2) | DE3918274A1 (fr) |
| NO (1) | NO178838C (fr) |
| PT (1) | PT94261A (fr) |
| TR (1) | TR24599A (fr) |
| WO (1) | WO1990015295A1 (fr) |
| ZA (1) | ZA904275B (fr) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4019174A1 (de) * | 1990-06-15 | 1992-01-02 | Henkel Kgaa | Hilfsmittel bei der filtration und/oder entwaesserung von mineral- und kohlesuspensionen |
| DE4218050A1 (de) * | 1992-06-01 | 1993-12-02 | Henkel Kgaa | Verfahren zur Entwässerung von feinteiligen Feststoffsuspensionen |
| DE4218074A1 (de) * | 1992-06-01 | 1993-12-02 | Henkel Kgaa | Verfahren zur Entwässerung von feinteiligen Feststoffsuspensionen |
| US5670056A (en) * | 1995-04-17 | 1997-09-23 | Virginia Tech Intellectual Properties, Inc. | Chemical-mechanical dewatering process |
| US6855260B1 (en) * | 1999-06-07 | 2005-02-15 | Roe-Hoan Yoon | Methods of enhancing fine particle dewatering |
| US6526675B1 (en) | 1999-06-07 | 2003-03-04 | Roe-Hoan Yoon | Methods of using natural products as dewatering aids for fine particles |
| US6375853B1 (en) * | 2000-03-17 | 2002-04-23 | Roe-Hoan Yoon | Methods of using modified natural products as dewatering aids for fine particles |
| US6799682B1 (en) | 2000-05-16 | 2004-10-05 | Roe-Hoan Yoon | Method of increasing flotation rate |
| EP1406711B1 (fr) | 2000-09-28 | 2009-11-18 | Roe-Hoan Yoon | Procedes permettant d'utiliser des produits naturels comme auxiliaires de deshydratation de particules fines |
| JP4022595B2 (ja) * | 2004-10-26 | 2007-12-19 | コニカミノルタオプト株式会社 | 撮影装置 |
| CA2597176C (fr) * | 2005-02-04 | 2013-10-22 | Mineral And Coal Technologies, Inc. | Separation de diamants de mineraux de gangue amelioree |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2266954A (en) * | 1939-08-26 | 1941-12-23 | American Cyanamid Co | Wetting agent in settling of oe pulps |
| US2975123A (en) * | 1957-11-04 | 1961-03-14 | Int Nickel Co | Dewatering metal ore concentrates |
| US3194758A (en) * | 1961-05-24 | 1965-07-13 | Petrolite Corp | Method of agglomerating finely divided solids in an aqueous medium |
| US3327402A (en) * | 1964-12-28 | 1967-06-27 | Shell Oil Co | Solvent drying of coal fines |
| LU47975A1 (fr) * | 1965-02-12 | 1966-08-12 | ||
| US4014104A (en) * | 1975-06-23 | 1977-03-29 | Continental Oil Company | Drying of lignite using nonaqueous solvents |
| JPS5613099A (en) * | 1979-07-10 | 1981-02-07 | Nichireki Chem Ind Co Ltd | Treating method of sludge |
| JPS5784708A (en) * | 1980-11-18 | 1982-05-27 | Kao Corp | Improving agent for filtration/dehydration property of metal hydroxide slurry |
| CA1252016A (fr) * | 1984-01-09 | 1989-04-04 | Kay E. Cawiezel | Methode et agent de denoyage des minerais |
| DE3723323C2 (de) * | 1987-07-15 | 1998-03-12 | Henkel Kgaa | Hydroxy-Mischether, Verfahren zu deren Herstellung sowie deren Verwendung |
| US4866856A (en) * | 1987-10-13 | 1989-09-19 | The Standard Oil Company | Solids dewatering process and apparatus |
| US4990264A (en) * | 1989-10-13 | 1991-02-05 | Sherex Chemical Company, Inc. | Ore dewatering process and compositions therefor |
-
1989
- 1989-06-05 DE DE3918274A patent/DE3918274A1/de not_active Withdrawn
-
1990
- 1990-05-28 EP EP90908227A patent/EP0475969B1/fr not_active Expired - Lifetime
- 1990-05-28 WO PCT/EP1990/000851 patent/WO1990015295A1/fr active IP Right Grant
- 1990-05-28 AU AU56685/90A patent/AU631647B2/en not_active Ceased
- 1990-05-28 BR BR909007418A patent/BR9007418A/pt not_active Application Discontinuation
- 1990-05-28 US US07/777,389 patent/US5215669A/en not_active Expired - Fee Related
- 1990-05-28 DE DE59005545T patent/DE59005545D1/de not_active Expired - Fee Related
- 1990-05-28 CA CA002058440A patent/CA2058440C/fr not_active Expired - Fee Related
- 1990-06-01 TR TR90/0510A patent/TR24599A/xx unknown
- 1990-06-04 ZA ZA904275A patent/ZA904275B/xx unknown
- 1990-06-04 PT PT94261A patent/PT94261A/pt not_active Application Discontinuation
-
1991
- 1991-10-11 NO NO914001A patent/NO178838C/no not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9015295A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| BR9007418A (pt) | 1992-06-16 |
| AU5668590A (en) | 1991-01-07 |
| EP0475969B1 (fr) | 1994-04-27 |
| DE59005545D1 (de) | 1994-06-01 |
| NO178838C (no) | 1996-06-12 |
| NO178838B (no) | 1996-03-04 |
| PT94261A (pt) | 1991-02-08 |
| US5215669A (en) | 1993-06-01 |
| AU631647B2 (en) | 1992-12-03 |
| ZA904275B (en) | 1991-02-27 |
| NO914001D0 (no) | 1991-10-11 |
| NO914001L (no) | 1991-10-11 |
| CA2058440A1 (fr) | 1990-12-06 |
| CA2058440C (fr) | 2001-03-27 |
| DE3918274A1 (de) | 1990-12-06 |
| TR24599A (tr) | 1992-01-01 |
| WO1990015295A1 (fr) | 1990-12-13 |
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