Oil tank sludge removal method
    1.
    发明申请
    Oil tank sludge removal method 审中-公开
    油罐污泥去除方法

    公开(公告)号:US20060042661A1

    公开(公告)日:2006-03-02

    申请号:US11187671

    申请日:2005-07-22

    IPC分类号: B08B9/00

    CPC分类号: B08B9/0933

    摘要: A method for removing sludge from a petroleum storage tank is based on a two-step approach utilizing solvent extraction to dissolve organic components of the sludge followed by water wash to remove inorganic materials. Sludges contain both organic-based solids (e.g., waxes and asphaltenes) as well as inorganic-based solids (known to exist as salts such as chlorides, carbonates, and oxides). The organic components of the sludge are dissolved using petroleum-based solvent streams that have been identified to possess high solvent power. The dissolved material can then be processed and recovered in the refinery using conventional refining operations. A water wash following removal of the organic materials is effective to remove the inorganic materials that can then be disposed of without the complications of the having to treat the oily organics along with them. A beneficial part of the method includes mixing and heating to improve the dissolution of soluble materials in both steps of the process.

    摘要翻译: 从石油储罐中除去污泥的方法是基于利用溶剂萃取溶解污泥的有机组分的两步法,然后进行水洗以除去无机材料。 淤泥含有有机基固体(例如蜡和沥青质)以及基于无机的固体(已知以诸如氯化物,碳酸盐和氧化物的盐的形式存在)。 使用已被认定为具有高溶剂能力的石油基溶剂流使污泥的有机成分溶解。 然后可以使用常规的精炼操作将溶解的材料在炼油厂中加工和回收。 去除有机材料后的水洗有效地除去可以处理的无机材料,而不需要与它们一起处理油性有机物的并发症。 该方法的有益部分包括混合和加热以改善可溶物质在该方法的两个步骤中的溶解。