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    REMOVAL OF FLUORIDE-CONTAINING SCALES USING ALUMINUM SALT SOLUTION
    3.
    发明公开
    REMOVAL OF FLUORIDE-CONTAINING SCALES USING ALUMINUM SALT SOLUTION 失效
    ENTFERNUNG VON FLUORIDENENTHALTENDEM KESSELSTEIN MITTELSALUMINIUMSALZLÖSUNGEN

    公开(公告)号：EP0922124A4

    公开(公告)日：1999-10-13

    申请号：EP97936086

    申请日：1997-07-14

    Applicant: TEXACO DEVELOPMENT CORP

    Inventor： WEBSTER GEORGE HENRY ,  VON KLOCK BYRON

    IPC: C23G1/00 ,  B08B3/00 ,  C10J20060101 ,  C23G20060101 ,  C23G1/02 ,  C23G1/08 ,  C23G1/10

    CPC classification number: C23G1/08 ,  C23G1/10 ,  C23G1/106

    Abstract: Fluoride-containing scale can be removed from metal surfaces such as titanium, titanium alloys, nickel alloys, and stainless steel by contacting the metal surfaces with an aqueous salt solution of an inorganic acid, including its hydrates. The cationic portion of the salt can be aluminum, iron and mixtures thereof. The anionic portion of the salt can be a chloride, a nitrate, a sulfate, and mixtures thereof. The contracting occurs in the absence of the addition of an acid, such as hydrochloric, nitric, or sulfuric acid. The presence of the aqueous salt solution with the dissolved fluoride scale does not accelerate or increase the normal rate of metal corrosion that can occur in the absence of the aqueous salt solution or any acidic cleaning agent.

    Abstract translation: 通过使金属表面与无机酸（包括其水合物）的盐水溶液接触，可以从金属表面（例如钛，钛合金，镍合金和不锈钢）去除含氟化物的氧化皮。 盐的阳离子部分可以是铝，铁及其混合物。 盐的阴离子部分可以是氯化物，硝酸盐，硫酸盐及其混合物。 收缩发生在不添加酸如盐酸，硝酸或硫酸的情况下。 具有溶解的氟化物水垢的盐水溶液的存在不会加速或增加在不存在盐水溶液或任何酸性清洁剂的情况下可能发生的金属腐蚀的正常速率。

    Method of recovering ethers and alcohols from wastewater
    4.
    发明专利
    Method of recovering ethers and alcohols from wastewater 未知

    公开(公告)号：GB2293375A

    公开(公告)日：1996-03-27

    申请号：GB9419004

    申请日：1994-09-21

    Applicant: TEXACO DEVELOPMENT CORP

    Inventor： WEBSTER GEORGE HENRY ,  CARRILLO DONALD EDWARD

    IPC: C02F1/26 ,  C10L1/02

    Abstract: Dialkyl ethers having 5 to 7 carbon atoms; e.g. MTBE, and alcohols having 1 to 4 carbon atoms are extracted from wastewater with contaminant-free gasoline. Wastewater saturated with contaminants is reduced to 200 ppm contaminants in the absence of stripping. An octane enhanced gasoline is recovered. Additional ether may be added to the recovered gasoline to increase octane. The method is particularly effective in wastewater/gasoline system containing emulsifiers such as surfactants, gasoline detergents and colloidal particles.

    5.
    发明专利
    未知

    公开(公告)号：ES2179359T3

    公开(公告)日：2003-01-16

    申请号：ES97936086

    申请日：1997-07-14

    Applicant: TEXACO DEVELOPMENT CORP

    Inventor： WEBSTER GEORGE HENRY ,  VON KLOCK BYRON

    IPC: C23G1/00 ,  B08B3/00 ,  C10J20060101 ,  C23G20060101 ,  C23G1/02 ,  C23G1/08 ,  C23G1/10

    Abstract: Fluoride-containing scale can be removed from metal surfaces such as titanium, titanium alloys, nickel alloys, and stainless steel by contacting the metal surfaces with an aqueous salt solution of an inorganic acid, including its hydrates. The cationic portion of the salt can be aluminum, iron and mixtures thereof. The anionic portion of the salt can be a chloride, a nitrate, a sulfate, and mixtures thereof. The contracting occurs in the absence of the addition of an acid, such as hydrochloric, nitric, or sulfuric acid. The presence of the aqueous salt solution with the dissolved fluoride scale does not accelerate or increase the normal rate of metal corrosion that can occur in the absence of the aqueous salt solution or any acidic cleaning agent.

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