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A kind of method for measuring coal tar three mixed naphthalene oil

A technology for coal tar and naphthalene oil, which is applied in the field of extraction of trimixed naphthalene oil, can solve problems such as backflow of external gas, and achieve the effects of easy cleaning, stable fractionation efficiency, and difficulty in sticking samples

Active Publication Date: 2022-02-22
马钢奥瑟亚化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, in the existing fractionation device, when the vacuum connection device fails or the instrument leaks, the external gas will flow back into the fractionation device.

Method used

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  • A kind of method for measuring coal tar three mixed naphthalene oil
  • A kind of method for measuring coal tar three mixed naphthalene oil
  • A kind of method for measuring coal tar three mixed naphthalene oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: take Maanshan Iron and Steel Coal Tar as an example, the method for measuring coal tar trimixed naphthalene oil comprises the following steps:

[0029] (1) take by weighing the coal tar that quality is 200.10g after dehydration;

[0030] (2) Coal tar is put into the distillation bottle of fractionation unit, and fractionation unit is connected and assembled;

[0031] (3) start heating to the retort in step (2), cut off the cut temperature that is 180~250 ℃ and weigh the weight 32.87g of the cut and measure the purity to be 62.4%; cut off temperature in the described step (3) The specific steps for the fraction section of 180-250°C are: when the temperature reaches 180°C, replace the receiver of the fractionation device, and cut off the fraction section with a temperature of 180-250°C; when the temperature exceeds 250°C, replace the receiver again;

[0032] (4) Continue to heat the coal tar in the retort until crystallization occurs in the distillate, stop...

Embodiment 2

[0034] Embodiment 2: Take Maanshan Iron and Steel Coal Tar as an example, the method for measuring coal tar trimixed naphthalene oil comprises the following steps:

[0035] (1) take by weighing the coal tar that quality is 200.26g after dehydration;

[0036] (2) Coal tar is put into the distillation bottle of fractionation unit, and fractionation unit is connected and assembled;

[0037](3) start heating to the retort in step (2), cut off temperature and be the cut section of 180~250 ℃ and weigh the weight 33.04g of cut and measure purity to be 62%; Cut off temperature in described step (3) The specific steps for the fraction section of 180-250°C are: when the temperature reaches 180°C, replace the receiver of the fractionation device, and cut off the fraction section with a temperature of 180-250°C; when the temperature exceeds 250°C, replace the receiver again;

[0038] (4) Continue to heat the coal tar in the retort until crystallization occurs in the distillate, stop heat...

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Abstract

The invention relates to a method for measuring coal tar trimixed naphthalene oil, comprising the following steps: (1) weighing the dehydrated coal tar whose quality is X; (2) putting the coal tar into a distillation bottle of a fractionation device, and The fractionation device is connected and assembled; (3) start heating the retort in step (2), cut off the distillate segment with a temperature of 180-250°C and weigh the weight X1 of the distillate and measure the purity Z; (4) continue to reheat the retort The coal tar in the heating is heated until crystallization occurs in the distillate, and the heating is stopped, the temperature at this time is recorded, and the weight X2 of the distillate in the receiver at this time is weighed; (5) according to step (3) and step (4 ) fraction weight calculation of the content Y1 of naphthalene in coal tar and the content Y2 of three mixed naphthalene oils. The method for measuring coal tar trimixed naphthalene oil predicts the yield of trimixed naphthalene oil in actual production, can reduce the content of anthracene oil in the trimixed naphthalene oil, and improves the purity of the trimixed naphthalene oil, which can be used to guide practice Production.

Description

technical field [0001] The invention relates to the technical field of extraction of trimixed naphthalene oil of coal tar, and relates to a method for determining trimixed naphthalene oil of coal tar. Background technique [0002] Coal tar distillation is the preliminary distillation of coal tar, and the crude products such as asphalt and anthracene oil are directly exported, and the tri-mixed naphthalene oil in the essence is used as the raw material for the further processing of the tar workshop to extract crude phenol and phenol oil , washing oil and industrial naphthalene and other high value-added products, so as to create more economic benefits. Coal tar processing first cuts three-mixed naphthalene oil in distillation, and then further extracts pure products. Because industrial naphthalene and crude phenol are both High value-added products, therefore, the quality control of ternary naphthalene oil is particularly important. [0003] The deep processing of coal tar i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 李蒴傅勤斌吴岑岑余奇高学频任惠熊磊宋坤垚
Owner 马钢奥瑟亚化工有限公司
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