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A method for detecting corrosive chlorine content in phosphate ester resistant fuel

A detection method and fuel-resistant technology, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of inability to analyze and detect corrosive chlorine alone, inability to distinguish and detect chlorine-containing substances separately, and lack of pertinence, so as to improve safe operation. Stability, efficient targeted evaluation, and wide-ranging effects

Active Publication Date: 2019-09-27
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current methods for testing phosphate ester anti-corrosion chlorine in fuel include: oxygen bomb method (DL / T 433-2015), high-temperature combustion microcoulomb method (DL / T 1206-2013), digestion-automatic potentiometric titration method (ZL 201410320222.1) etc., or X-ray fluorescence spectrometry, these methods can only detect the total content of chlorine-containing substances (total chlorine), and cannot distinguish and detect different types of chlorine-containing substances, especially the corrosive chlorine cannot be analyzed and detected separately. content, the results are obviously lacking in pertinence when used to evaluate oil performance and its hazards to the system

Method used

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  • A method for detecting corrosive chlorine content in phosphate ester resistant fuel
  • A method for detecting corrosive chlorine content in phosphate ester resistant fuel
  • A method for detecting corrosive chlorine content in phosphate ester resistant fuel

Examples

Experimental program
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Effect test

Embodiment 1

[0050] First use the X-ray fluorescence spectrometer to test the phosphate ester anti-fuel standard solutions with different chlorine contents to establish a standard curve, and then analyze the samples to obtain the total chlorine content C of the phosphate ester anti-fuel samples. 1 . Then, prepare 0.1% HNO 3 Take 50mL of aqueous solution, weigh 1g of phosphate ester anti-fuel oil and add it into a high-temperature, high-pressure and corrosion-resistant polytetrafluoroethylene autoclave, stir and raise the temperature to 100°C, keep it constant for 2h, and after cooling to room temperature, obtain a phosphate ester anti-fuel oil sample and a decomposition test. The mixed solution after the liquid reaction is completed. Pour the mixed solution into a centrifuge tube and centrifuge at a speed of 1000rad / min for 30min to separate the phosphate ester fuel oil sample and the decomposition test solution. to be tested. Then use the X-ray fluorescence spectrometer to analyze the ...

Embodiment 2

[0056] First use the X-ray fluorescence spectrometer to test the phosphate ester anti-fuel standard solutions with different chlorine contents to establish a standard curve, and then analyze the samples to obtain the total chlorine content C of the phosphate ester anti-fuel samples. 1 . Then, take 30mL of deionized water, weigh 1g of phosphate ester anti-fuel fresh oil and add it into a high temperature, high pressure and corrosion-resistant polytetrafluoroethylene autoclave, stir and heat up to 85°C, keep it constant for 24h, and obtain phosphate ester anti-fuel oil after cooling to room temperature The mixture after the reaction between the fuel sample and the decomposition test solution is completed. Pour the mixed solution into a centrifuge tube and centrifuge at a speed of 3000rad / min for 10 minutes to separate the phosphate ester fuel oil sample and the decomposition test solution. The corrosive chlorine in the phosphate ester fuel oil sample enters the decomposition tes...

Embodiment 3

[0061] First use the X-ray fluorescence spectrometer to test the phosphate ester anti-fuel standard solutions with different chlorine contents to establish a standard curve, and then analyze the samples to obtain the total chlorine content C of the phosphate ester anti-fuel samples. 1 . Then, prepare 0.5% H 2 SO 4 Take 20mL of aqueous solution, weigh 1g of phosphate ester anti-fuel oil and add it into a high-temperature, high-pressure and corrosion-resistant polytetrafluoroethylene autoclave, stir and raise the temperature to 50°C, keep it constant for 8h, and obtain a phosphate ester anti-fuel oil sample and decomposition test after cooling to room temperature. The mixed solution after the liquid reaction is completed. Pour the mixture into a centrifuge tube and centrifuge at a speed of 10,000 rad / min for 5 minutes to separate the phosphate ester fuel-resistant fuel sample and the decomposition test solution. The corrosive chlorine in the phosphate ester fuel-resistant fuel...

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Abstract

The invention discloses a method for detecting the content of corrosive chlorine in phosphate fire-resistant oil to accurately calculate the content of the corrosive chlorine in a phosphate fire-resistant oil sample by decomposing and separating the corrosive chlorine in the phosphate fire-resistant oil. The method overcomes the defects of the conventional method which can only detect the total chlorine content, and cannot evaluate corrosiveness of new phosphate fire-resistant oil and running oil directively, achieves accurate detection of the content of the corrosive chlorine in the phosphate fire-resistant oil, and effectively prevents easily-degraded and harmful fire-resistant oil from entering the equipment, thereby accurately judging whether an oil product is polluted by the corrosive chlorine in a process of using, and ensuring operation safety of the equipment.

Description

technical field [0001] The invention belongs to the field of electrochemical analysis, and in particular relates to a detection method for corrosive chlorine content in phosphate ester anti-fuel oil. Background technique [0002] Phosphate ester anti-fuel is widely used as the working medium of the electro-hydraulic speed control system. It has good anti-oxidation stability, strong hydrolysis stability and good heat and fire resistance. However, chlorine-containing substances are unavoidable in phosphate ester fuel oil, such as production raw material residues (phosphorus oxychloride, catalyst metal chloride salt, etc.), reaction by-products (such as hydrochloric acid, chlorine-containing phosphate, etc.), and transportation and use processes Chlorine pollutants (such as chlorine-containing sealing materials such as neoprene, leather, rubber asbestos pads, etc., chlorine-containing solvents such as gasoline and chlorinated alkanes for equipment cleaning). Excessive chlorine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/223
Inventor 吴俊杰周舟刘凯钱晖万涛龚尚昆查方林何铁祥王凌李臻
Owner STATE GRID CORP OF CHINA
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