Method for detecting content of corrosive chlorine in phosphate fire-resistant oil

A detection method and fuel-resistant technology, which is applied in the direction of measuring devices, test sample preparation, instruments, etc., can solve the problems of inability to distinguish and detect corrosive chlorine separately, lack of pertinence, etc., and achieve breakthroughs in technical limitations and a wide range of applications , the effect of improving stability

Active Publication Date: 2017-06-13
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing methods are to test the chlorine content after completely decomposing phosphate ester fuel oil, including: oxygen bomb method (DL / T 433-2015), high-temperature combustion microcoulomb method (DL / T 1206-2013), digestion- Automatic potentiometric titration (ZL 201410320222.1), etc., or use X-ray fluorescence spectrometry to directly test the chlorine content in fuel oil, these methods can only detect the total content of chlorine-containing substances (total chlorine), and cannot detect the corrosive Chlorine is tested separately, and 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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  • Method for detecting content of corrosive chlorine in phosphate fire-resistant oil
  • Method for detecting content of corrosive chlorine in phosphate fire-resistant oil
  • Method for detecting content of corrosive chlorine in phosphate fire-resistant oil

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Formulated with 0.1% HNO 3 Add 50 mL of the aqueous solution into a high-temperature, high-pressure and corrosion-resistant polytetrafluoroethylene autoclave, stir and heat up to 100°C, keep it constant for 12 hours, and cool to room temperature as a blank control group. Formulated with 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 30 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 aqueo...

Embodiment 2

[0053] Take 30 mL of deionized water 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 cool to room temperature as a blank control group. Take 30mL of deionized water, weigh 1g of phosphate ester anti-fuel oil and add it to a high-temperature, high-pressure and corrosion-resistant PTFE autoclave, stir and raise the temperature to 85°C, keep it constant for 24h, and obtain a phosphate ester anti-fuel sample after cooling to room temperature The mixed solution after the reaction with the decomposition test solution is completed. Pour the mixed solution into a centrifuge tube and centrifuge at a speed of 3000rad / min for 10min to separate the phosphate ester fuel oil sample and the decomposition test solution. Measurement. Then use ion chromatography to analyze the chlorine content C of the decomposition test solution in the blank control group 0 and the chlorine co...

Embodiment 3

[0058] 1) Prepare 0.5% H 2 SO 4 Add 20 mL of the aqueous solution into a high-temperature, high-pressure and corrosion-resistant polytetrafluoroethylene autoclave, stir and raise the temperature to 50°C, keep it constant for 8 hours, and use it as a blank control group after cooling to room temperature.

[0059] 2) 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 mixed solution into a centrifuge tube and centrifuge at a speed of 10,000 rad / min for 5 minutes to separate the phosphate ester fuel oil sample and the decomposition test solution. The corrosive chlorine in the phosphate ester...

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Abstract

The invention discloses a method for detecting the content of corrosive chlorine in phosphate fire-resistant oil. The content of corrosive chlorine in the phosphate fire-resistant oil is accurately calculated through decomposing and separating the corrosive chlorine from the phosphate fire-resistant oil. According to the method, the defects that only the content of total chlorine can be detected and the corrosivity of new oil and running oil of the phosphate fire-resistant oil cannot be evaluated in a targeted manner in an existing method are overcome; accurate detection of the content of corrosive chlorine in the phosphate fire-resistant oil is achieved; easy-to-degrade and hazardous fire-resistant oil is effectively prevented from entering equipment; whether an oil product is polluted by corrosive chlorine or not in the use process is accurately judged; and the operating security of the equipment is ensured.

Description

technical field [0001] The invention belongs to the field of electrochemical analysis, and in particular relates to a method for detecting the content of corrosive chlorine in phosphate-resistant fuel oil. Background technique [0002] Phosphate ester fuel oil has the advantages of good oxidation stability, strong hydrolysis stability, heat resistance and fire resistance, and is widely used as the working medium of electro-hydraulic speed control systems. However, due to the limitations of the production process and the complexity of the use environment, there are inevitably chlorine-containing substances in the anti-fuel, which generally include residual raw materials (such as phosphorus oxychloride, catalyst metal chloride salts, etc.), reaction by-products (such as hydrochloric acid, etc.) , chlorine-containing phosphate, etc.) and chlorine pollutants exposed during use (such as chlorine-containing sealing materials such as neoprene, leather, rubber asbestos pads, chlorin...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N33/00
CPCG01N1/28G01N33/00
Inventor 吴俊杰刘凯钱晖周舟万涛王凌查方林龚尚昆李臻何铁祥
Owner STATE GRID CORP OF CHINA
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