Washing method of petroleum equipment and washing solution for use with the method
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United States of America Patent
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Mar 9, 2004
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N/A
app pub date -
Oct 11, 2002
filing date -
Mar 24, 2000
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Abstract
A washing method of petroleum equipment using washing solution capable of being used in a waterless environment is provided. A compound of surface-active agent and oil is used as the washing solution of the petroleum equipment. Content of the surface-active agent in the compound is preferably 1 to 20 volume %. The surface-active agent is preferably selected from the group consisting of anionic surface-active agent, cationic surface-active agent, amphoteric surface-active agent and nonionic surface-active agent. The oil is preferably at least one selected from the group consisting of kerosene, light gas oil, vacuum gas oil and light cycle oil fraction obtained from a fluid catalystic cracking unit.
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