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    • 2. 发明申请
    • CHEMICAL METHOD FOR REMOVING COPPER SULPHIDE (CU2S) DEPOSITED ONTO CELLULOSE -BASED MATERIAL IN TRANSFORMER USING A COPPER COMPLEXANT
    • 使用铜复合物将铜磷化物(CU2S)去除在变压器中的纤维素材料的化学方法
    • WO2012107116A1
    • 2012-08-16
    • PCT/EP2011/069503
    • 2011-12-02
    • ABB RESEARCH LTDROGEAU, AntoineDAHLUND, MatsPITOIS, Claire
    • ROGEAU, AntoineDAHLUND, MatsPITOIS, Claire
    • C22B3/30C01G3/12C23G5/02H01F27/12H01F27/34C22B3/16
    • C22B3/0017C01G3/12C01P2002/89C01P2006/40C01P2006/80C22B3/0024C22B3/1633C22B3/1641H01F27/14H01F27/23Y02P10/234
    • A method for removing copper sulphide (Cu 2 S) deposited onto electrically insulating materials of components in an electrical apparatus,such as a transformer or a bushing, wherein normally present electrically insulating oil has been substantially removed, and on other surfaces of such apparatus, comprising the following steps: providing a chemical treatment solution comprising at least one non-polar solvent and at least one chelating agent being able of forming complexes with copper from the surface of Cu 2 S deposited onto the insulating material, said chelating agent containing free electrons capable of forming a complexation with Cu, being at least a bidentate, but preferably a multidentate, i.e. being able of forming complexes with Cu from more than one point in the chelating agent, and having a solubility in the non-polar solvent of at least 0,05mol/L to allow ex- traction of copper by solvation of the formed copper-chelating complex;and optionally additional components; subjecting the insulating material to the solution, preferably at a temperature of 30-130 °C,more preferably 50-90°C, for a predetermined time period, preferably 1 to 15 days, more preferably 3 to 7 days; and removing the chemical treatment solution from the insulating material.
    • 一种去除沉积在诸如变压器或套管的电气设备中的部件的电绝缘材料上的硫化铜(Cu2S)的方法,其中通常存在的电绝缘油已被基本上除去,并且在这种设备的其它表面上,包括 以下步骤:提供包含至少一种非极性溶剂和至少一种螯合剂的化学处理溶液,所述至少一种螯合剂能够从沉积在所述绝缘材料上的Cu2S的表面形成与铜的络合物,所述螯合剂含有能够形成 与Cu络合,至少是二齿的,但优选为多齿的,即能够在螯合剂中从多于一个点形成与Cu的络合物,并且在非极性溶剂中的溶解度至少为0.05mol / L以通过溶解所形成的铜 - 螯合络合物,以及任选的另外的组分来提供铜; 绝缘材料优选在30-130℃,更优选50-90℃的温度下进行预定时间,优选1至15天,更优选3至7天; 并从绝缘材料中除去化学处理溶液。
    • 3. 发明申请
    • METHOD FOR REMOVING COPPER SULPHIDE (CU2S) DEPOSITED ONTO CELLULOSE-BASED MATERIAL IN TRANSFORMER
    • 用于去除在变压器中以纤维素为主的材料的铜硫化物(CU2S)的方法
    • WO2011069757A1
    • 2011-06-16
    • PCT/EP2010/066897
    • 2010-11-05
    • ABB RESEARCH LTDGELLERSTEDT, GöranBERGER, RolfPITOIS, ClaireDAHLUND, Mats
    • GELLERSTEDT, GöranBERGER, RolfPITOIS, ClaireDAHLUND, Mats
    • C11D11/00C11D3/43C11D3/20C11D3/28C11D3/30C11D3/33C11D3/36
    • C11D11/0047C11D3/2082C11D3/28C11D3/30C11D3/33C11D3/361C11D3/43
    • A method for removing copper sulphide (Cu 2 S) deposited onto electrically insulating materials of components in an electrical apparatus, such as a transformer or a bushing, wherein normally present electrically insulating oil has been substantially removed, and on other surfaces of such apparatus, comprising the following steps: providing a chemical treatment solution comprising a polar aprotic solvent, and preferably a chelating agent being able of forming complexes with copper from the surface of Cu 2 S deposited onto the insulating material, said chelating agent containing free electrons capable of forming a complexation with Cu, being at least a bidentate, but preferably a multidentate, i.e. being able of forming complexes with Cu from more than one point in the chelating agent, and having a solubility in the polar aprotic solvent of at least 5-10 -4 mol/L to allow extraction of copper by solvation of the formed copper-chelating complex; and optionally additional components, said chemical treatment solution being non-aqueous; subjecting the insulating material to the solution, preferably at a temperature of 30-130 °C, more preferably 50-90°C, for a predetermined time period, preferably 2 to 10 days, more preferably 3 to 7 days; and removing the chemical treatment solution from the insulating material.
    • 一种去除沉积在诸如变压器或衬套的电气设备中的部件的电绝缘材料上的硫化铜(Cu2S)的方法,其中通常存在的电绝缘油已被基本上除去,并且在这种设备的其它表面上,包括 以下步骤:提供包含极性非质子溶剂的化学处理溶液,并且优选能够与沉积在绝缘材料上的Cu2S的表面形成与铜形成络合物的螯合剂,所述螯合剂含有能够与Cu形成络合的自由电子 ,至少是二齿的,但优选是多齿的,即能够在螯合剂中从多于一个点形成与Cu的络合物,并且在极性非质子溶剂中的溶解度至少为5-10-4mol / L 通过溶解形成的铜螯合络合物来提取铜; 和任选的另外的组分,所述化学处理溶液是非水的; 绝缘材料优选在30-130℃,更优选50-90℃的温度下进行预定时间,优选2至10天,更优选3至7天; 并从绝缘材料中除去化学处理溶液。