Determination of Total Sediment in Residual Fuel Oil (Hot Filtration Method / Aging Method)

Determination of Total Sediment in Residual Fuel Oil

(Hot Filtration Method / Aging Method)

Overview

  Residual fuel oil is blended from the residue obtained after crude oil distillation and is widely used in large power equipment such as ships and boilers. During storage, transportation and use, insoluble solid impurities, namely total sediment, will form in the oil. Excessive sediment can clog filters, wear out oil pumps and nozzles, reduce combustion efficiency, and even cause equipment failures, so strict testing is essential.

Experimental Purpose

  To determine the total sediment content in residual fuel oil, evaluate the cleanliness and service performance of the oil, and ensure that the fuel meets the requirements for storage, transportation and combustion. This experiment is carried out in accordance with the standards SH/T 0701 (Hot Filtration Method) and SH/T 0702 (Aging Method). The SH0702 Residual Fuel Oil Total Sediment Tester from Shandong Shengtai Instrument fully complies with the above standards, featuring automatic temperature control, timing and vacuum filtration for one-click standardized testing.

Experimental Sample

Residual fuel oil (kinematic viscosity at 100℃ < 55mm²/s)

Experimental Instruments

1. SH0702 Residual Fuel Oil Total Sediment Tester

2. Analytical balance (0.1mg)

3. 110℃ drying oven

4. Glass fiber filter papers, beakers, weighing bottles, washing solvents, n-heptane, etc.

Experimental Procedures

1. Sample preparation: Mix the fuel oil thoroughly, weigh approximately 11g of the sample, and heat it to 100℃±2℃ for later use.

2. Filter paper pretreatment: Dry the filter papers in a 110℃ drying oven for 20 minutes, cool them to room temperature, and weigh accurately.

3. Instrument setup: Turn on the filtration bath, set the temperature to 100℃ and maintain constant temperature for 10 minutes; adjust the vacuum pressure to 40kPa±2kPa.

4. Filtration test: Install the filter papers into the filter, add the sample in portions, and complete the filtration under constant temperature and vacuum conditions.

5. Washing and drying: Wash the filter papers with the specified solvent, dry them again in the oven, cool to room temperature, and weigh accurately.

6. Result calculation: Calculate the percentage content of total sediment based on the mass difference of the filter papers before and after filtration and the mass of the sample.

Results and Evaluation

  Tested according to the standard method, the instrument features precise temperature control (≤±0.2℃), stable vacuum, accurate timing and excellent repeatability. The test results can be directly used for factory inspection, warehouse acceptance and quality judgment, providing reliable data for fuel oil quality control.