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A kind of thermal stability detection method of organic heat carrier

A detection method and thermal stability technology, applied in the field of petrochemical industry, can solve the problems of high detection cost, small difference in test results of heat transfer oil, slow detection speed, etc., and meet harsh test conditions, low requirements for heat treatment containers, and large difference in deterioration rate Effect

Active Publication Date: 2016-05-25
CHENGDU MAX TOP NEW ENERGY LUBRICATING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the high requirements of the need for a complete closed environment nitrogen seal in the organic heat carrier thermal stability detection method in the prior art, and the detection result cannot It completely and truly reflects the deterioration of the organic heat carrier in actual use and contact with the air. The difference in test results between different heat transfer oils is small, the detection speed is slow, and the detection cost is high. It provides a fast and simple method that can truly simulate the use of organic heat transfer materials. Situation detection comparison method

Method used

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  • A kind of thermal stability detection method of organic heat carrier
  • A kind of thermal stability detection method of organic heat carrier
  • A kind of thermal stability detection method of organic heat carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Collect commercially available heat transfer oil samples 1 and 2 (the maximum service temperature is 310°C, with the test report of GB / T23800-2009 organic heat transfer thermal stability test method) and Maxtor's MTYD310 mineral heat transfer oil (maximum service temperature both at 310°C), each 100mL was injected into the attached Figure 7 As shown, the specification is that the volume of the bottle body is 100mL, the length of the funnel neck is 750mm, and the inner diameter of the funnel neck is 6mm. The probe is placed in the temperature probe installation hole 3 to detect the temperature, and the oxidation interface, color, attachment, bottom precipitation, and light transmittance of the three are observed with the naked eye. After heating, the acid value and viscosity are measured. The results are as follows:

[0030] Maxtor MTYD310 mineral heat transfer oil is initially a light golden yellow transparent liquid, and the color deepens with time. After the test is ...

Embodiment 2

[0035] Collect commercially available synthetic aromatic hydrocarbon heat transfer oil samples 3 and 4 (both with a maximum service temperature of 300°C, with the test report of GB / T23800-2009 organic heat carrier thermal stability test method) and Maxtor's MTFD synthetic aromatic hydrocarbon heat transfer oil ( The maximum operating temperature is 300°C), each 100mL, respectively injected into a detection container with a bottle volume of 100mL, a funnel neck length of 750mm, and a funnel neck inner diameter of 6mm, heat the heat transfer oil in the bottle to 290°C and keep it for 400 hours, The temperature of the oxidation interface is 80°C±5°C. Observe the color, attachment, bottom precipitation, and light transmittance of the two with the naked eye. After heating, measure the acid value and viscosity. The results are as follows:

[0036] Maxtor MTFD synthetic aromatic heat transfer oil is initially light yellow transparent liquid, and the color deepens slightly with the hea...

Embodiment 3

[0041] Collect commercially available hydrogenated heat transfer oil samples 5 and 6 (maximum use temperature 310 ° C, with GB / T23800-2009 organic heat carrier thermal stability test report) and Maxtor's MTQD310 hydrogenated heat transfer oil (highest Temperature 310°C) each 100mL, respectively injected into the detection container with a bottle volume of 100mL, a funnel neck length of 750mm, and a funnel neck inner diameter of 6mm, and respectively added small metal blocks with the same material, shape, and size. Heat the oil to 310°C and keep it warm for 600 hours. The temperature of the upper oxidation interface is 120°C±5°C. Observe the color, attachment, bottom precipitation, and light transmittance of the two with the naked eye. After heating, measure the acid value and viscosity. The results are as follows:

[0042] Maxtor MTQD310 hydrogenated heat transfer oil is initially a colorless and transparent liquid, and the color deepens with the heating time. After the test, t...

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Abstract

The invention discloses a method for detecting the thermal stability of an organic heat carrier, which comprises the following steps: (1) taking different samples to be tested and placing them in thermal stability detection containers of the same specification, and heating the organic heat carrier in the bottle to 260~350℃ and keep warm for 100~1000h; (2) During the heating process of the organic heat carrier, compare the color change, the amount of attachments in the container, the sediment at the bottom, and the light transmittance among different samples to be tested. (3) After the heating is stopped, after the organic heat carrier is cooled to room temperature, pour it out to measure the viscosity and acid value. The method of the present invention not only has low requirements on the thermal stability detection container of the organic heat carrier, but also has harsh test conditions and short test time, and can simply evaluate and compare the quality of organic heat carriers of different brands, and the test method is closer to the operation of most heat-conducting oil boilers in my country state.

Description

technical field [0001] The invention relates to a method for detecting the thermal stability of oil products, in particular to a method for detecting the thermal stability of an organic heat carrier, and belongs to the field of petrochemical industry. Background technique [0002] Organic heat transfer medium is an organic heat transfer medium used under high temperature conditions. All organic media for the purpose. [0003] Among the organic heat carriers mentioned above, heat transfer oil is more commonly used. In the actual use process, especially in the open heat transfer system, the heat transfer oil is in a state of high temperature for a long time, in contact with air and continuous operation. As the use time increases, chemical reactions or molecular rearrangements will inevitably occur, so The gas phase decomposition products, low boiling substances, high boiling substances and products that cannot be evaporated will affect the performance and service life of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/00G01N25/22
Inventor 胡建伟周勇
Owner CHENGDU MAX TOP NEW ENERGY LUBRICATING MATERIALS
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