Method for testing content of oil sludge in phosphate fire-resistant oil

Abstract

The invention discloses a method for testing the content of oil sludge in phosphate fire-resistant oil. The method includes the following steps that 20 g of the to-be-tested phosphate fire-resistant oil is added into a constant-weight centrifugal tube, n-pentane is added into the centrifugal tube, an opening of the centrifugal tube is plugged through a first plug, and then the material is mixed to be uniform; 50 mL of n-pentane is added into the centrifugal tube, after a second plug is plugged into the opening of the centrifugal tube, shaking is conducted, the centrifugal tube is put in a centrifuge for centrifugation, and after centrifugation, an upper solution of liquid in the centrifugal tube is poured into filter paper for filtering; the liquid in the centrifugal tube is put in a flask; the filter paper is washed with petroleum ether till no oil sample trace exists on the filter paper, and then the filter paper is put in a weighing bottle; the flask and the weighing bottle are dried and then cooled, the cooled flask and the cooled weighing bottle are weighed, and the content w of the oil sludge in the to-be-tested phosphate fire-resistant oil is obtained. The content of the oil sludge in the phosphate fire-resistant oil can be accurately tested.

Description

technical field [0001] The invention relates to a method for testing the sludge content, in particular to a method for testing the sludge content of phosphate-resistant fuel oil. Background technique [0002] In the current standard method of the power industry, the determination of sludge precipitation is only a qualitative judgment of whether there is sludge precipitation, and quantitative measurement results cannot be given. In order to accurately understand the precipitation of sludge on site and strengthen the supervision and management of oil quality, according to the requirements of the project technical specifications, it is necessary Research and formulate a quantitative test method for oil sludge content in anti-fuel oil to provide test basis for on-site supervision. [0003] The currently promulgated standard test methods for sludge and sediment are: (1) GB / T 511-2010 "Determination of Mechanical Impurities in Petroleum and Petroleum Products and Additives", which...

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Problems solved by technology

[0004] Compared with mineral oil, phosphate ester anti-fuel oil has a stronger ability to dissolve sludge. After the anti-fuel oil sample deteriorates, the content of soluble sludge is higher. Use filter paper with constant weight to filter, and then wash away the residual oil with solvent oil When using the weight difference before and after filtering the oil sample to calculate the sludge content in the phosphate ester resistant fuel, this will cause part of the soluble sludge to pass through the filter paper, and the test result of the sludge content is too small, so the measurement result is inaccurate

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