• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Die Trennung von Öl-in-Wasser-Emulsionen kann erheblich verbessert werden, wenn man als demulgierende Substanz ein Homopolymeres des Diallyldimethylammoniumchlorids zugibt, das noch 5 bis 10 Gew.-% Restmonomeres enthält.
    公开号:SU1456000A3
    申请号:SU853990805
    申请日:1985-12-19
    公开日:1989-01-30
    发明作者:Хофингер Манфред；Хилле Мартин；Бем Роланд
    申请人:Хехст Аг (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to methods for separating oil-in-water emulsions by adding cationic polymers and can be used to purify wastewater from emulsified oil. five
    The purpose of the invention is to reduce the residual oil content in water.
    To carry out the process, as a reagent disintegrating the oil in water emulsion, a 0.1-10-30% aqueous solution of diallyldimethylammonium chloride homopolymer (DADMAC | containing 5-10% by weight of unreacted monomer and having a viscosity of 16000-32000 mPa-s, measured in 38% -15% solution in water at.
    DADMAC is prepared from dimethylamine and allyl chloride in the usual way and polymerized in the aqueous phase using water-soluble initiators. Poly-DADMAC of the required composition is obtained on the basis of an initial monomer concentration in water of 60-65 wt.% At 8b-85 ° C and the introduction of an initiator in an amount of 5-1 mol by 1 mbl of monomer. The polymerization reaction is stopped by cooling or by adding an inhibitor (hydroquinone, benzoquinone) at a monomer conversion of 90-95%.
    Poly-DADMAC is a viscous, clear liquid with a pH of 6-7. The concentration of the homopolymer solution used in water depends on the type of emulsion and its temperature ..

    cl
    ABOUT)
    s
    „
    314
    Example 1. 555 g of a 60% aqueous solution of diallyldimethylammonium chloride is mixed with an aqueous solution of 2.3 g of potassium bicarbonate and 130 mg of ethylene diamine tetraacetic acid sodium salt. After vigorous stirring, degassing and washing with nitrogen at 82 ° C, 2.4 g of ammonium peroxodisulfate dissolved in 34 g of water are added continuously for 100 minutes. After 2 hours post-reaction time at 80 ° C., the polymerization is terminated. The product contains 5 May,% monomer and viscosity 32,000 mPa-s at. To measure the viscosity, a 38% aqueous polymer solution is prepared, the determinations are carried out at 25 ° C.
    And pm. M p 2. Polymerization was carried out according to Example 1, but 2.4 g of ammonium peroxodisulfate, dissolved in 90 g of water, was added over 100 minutes. Post reaction time is 1.5 hours.
    3. Conduct the reaction
    with post-reaction time
    Example 2 example less than 2 hours
    Examples 1a-3a. Poly-LADMAC samples of Example 1 are obtained, however, a greater amount of initiator is used (10 - 510 mol per mole of monomer) and polymerization is effected to a 100% degree of monomer conversion.
    The resulting DADMAC homopolymers have the characteristics given in
    tab. one.
    Comparative data on the effectiveness of the proposed method using homopolymers DADMA-X, obtained in examples 1-3, 1a-3a, are given in table. 2-5.
     The polymers are introduced in the form of a .30% aqueous solution and the oil content in water is determined 3 hours after settling.
    The polymers are introduced in the form of a 30% aqueous solution and the oil content in water is determined after one hour.
    The polymers are introduced in the form of a 30% aqueous solution and the oil content is determined after 30 minutes.
    The polymers are introduced in the form of a 10% aqueous solution and the oil in water is determined after 4 hours.
    A solution of the polymer in water can be prepared with a concentration of 0.1-30% by weight. The results of the dosing of the polymer according to Example 2 are presented in different concentrations in Table. 6

    five
    ten

    2o
    25
    15
    The proposed method, in comparison with the known method, improves the separation of an oil-in-water emulsion and provides an increase in the degree of water purification from emulsified oil, which allows filling and utilizing residual amounts of crude oil.
    权利要求:
    Claims (1)
    [1]
    Formula inventions.
    A method of purifying water from emulsified oil, including introducing a dimethyldiallylammonium chloride homopolymer, mixing and settling, characterized in that, in order to reduce the residual oil content in water, a 0.1-30% aqueous solution of dimethyl diallylammonium chloride homopolymer is introduced containing 5-10 wt.% of monomer and having a viscosity of 16000-32000 mPa-s, measured in a 38% aqueous solution at
    25 C.
    T a C) l and c a 1
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB985084A|1963-05-22|1965-03-03|Us Rubber Co|Moulding apparatus and process for making the same|
    US3461163A|1967-03-16|1969-08-12|Calgon Corp|Synthesis of dimethyl diallyl ammonium chloride|
    US3585148A|1969-03-26|1971-06-15|Nalco Chemical Co|Quaternary ammonium demulsifiers|
    US4151202A|1976-03-01|1979-04-24|Nalco Chemical Company|Preparation of diallyl dimethyl ammonium chloride and polydiallyl dimethyl ammonium chloride|
    US4026794A|1976-08-30|1977-05-31|Nalco Chemical Company|Process for resolving oil-in-water emulsions by the use of a cationic polymer and the water soluble salt of an amphoteric metal|
    US4120815A|1977-10-25|1978-10-17|Calgon Corporation|Polymeric demulsifiers|
    US4160742A|1978-06-15|1979-07-10|Calgon Corporation|Method of resolving oil-in-water emulsions|
    US4374734A|1981-06-19|1983-02-22|Cities Service Co.|Emulsion breaking of surfactant stabilized crude oil in water emulsions|
    US4457371A|1981-12-02|1984-07-03|Texaco Inc.|Method for demulsification of bitumen emulsions|
    US4405015A|1981-12-02|1983-09-20|Texaco Inc.|Demulsification of bitumen emulsions|
    US4452957A|1982-08-11|1984-06-05|National Starch And Chemical Corporation|Process for the production of homo- and co-polymers of quaternary ammonium monomers|
    GR79057B|1982-09-24|1984-10-02|Blue Circle Ind Plc|CA2126889C|1993-09-02|2005-06-14|Paul R. Hart|Method of breaking reverse emulsions in a crude oil desalting system|
    US5730905A|1994-06-21|1998-03-24|Betzdearborn Inc.|Method of resolving oil and water emulsions|
    DE4424067A1|1994-07-08|1996-01-11|Bayer Ag|Process for splitting oil-in-water emulsions and basic polyamides|
    US6084045A|1994-11-10|2000-07-04|The Procter & Gamble Company|Cationic polymer|
    DE19529602A1|1995-08-11|1997-02-13|Bayer Ag|Improved process for splitting oil emulsions|
    DE19532476A1|1995-09-02|1997-03-06|Winfried Prof Dr Schmidt|Oil-contg. waste water treatment, esp. for separating oil-in-water emulsions|
    KR100217235B1|1997-09-30|1999-10-01|허동수|System for the treratment of effluent water of desalter|
    WO2008020907A2|2006-08-16|2008-02-21|Exxonmobil Upstream Research Company|Oil/water separation of well stream by flocculation-demulsification process|
    WO2008020909A2|2006-08-16|2008-02-21|Exxonmobil Upstream Research Company|Demulsification of water-in-oil emulsion|
    RU2015135612A|2013-01-25|2017-03-03|Винтерсхол Хольдинг Гмбх|OIL RECOVERY METHOD|
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    WO2015094544A1|2013-12-16|2015-06-25|Dow Global Technologies Llc|Method for analysis of trace levels of chemical additives in oil recovery production fluids|
    EP3134487A1|2014-04-22|2017-03-01|Wintershall Holding GmbH|Process for recovery of oil|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19843446489|DE3446489A1|1984-12-20|1984-12-20|METHOD FOR SEPARATING OIL IN WATER EMULSIONS|
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