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Measurement method of soft asphalt quinoline insoluble substance

A method of determination, the technology of soft asphalt, applied in the direction of removing certain components and weighing, etc., can solve the problems of increased difficulty in production link control and unstable product quality, so as to ensure product quality and improve the quality of soft asphalt.

Inactive Publication Date: 2012-08-01
云南昆钢煤焦化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of unstable product quality and increased difficulty in production link control caused by inaccurate measurement of quinoline insoluble content, the present invention provides a method capable of accurately measuring quinoline insoluble content of soft asphalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A. Weigh 1.0202g of soft asphalt sample, add 25mL of quinoline for every 1 gram of soft asphalt sample, put the soft asphalt sample into commercially available analytical pure quinoline in a water bath at 75°C, and stir it from time to time The soft asphalt sample is completely dissolved in quinoline, and is suction-filtered with filter paper, so that the quinoline insoluble matter remains on the filter paper;

[0016] B. Wash the insoluble matter on the filter paper of step A with a commercially available analytically pure quinoline with a temperature of 75°C for 4 times, and each quinoline consumption is 5 mL;

[0017] C, be that the commercial analysis pure toluene of 75 ℃ with temperature washes the insoluble matter on the filter paper of step B repeatedly, until washing liquid is without yellow, the soluble matter on the filter paper is dissolved in quinoline, toluene;

[0018] D. The filter paper washed in step C is sucked and dried, dried at 120° C., and then tak...

Embodiment 2

[0022] A. Weigh 1.0405g of soft asphalt sample, add 25mL of quinoline per 1 gram of soft asphalt sample, put the soft asphalt sample into commercially available analytical pure quinoline at 70°C, stir from time to time to make the soft asphalt The sample is completely dissolved in quinoline, and filtered with filter paper, so that the quinoline insoluble matter remains on the filter paper;

[0023] B. Wash the insoluble matter on the filter paper of step A with a commercially available analytically pure quinoline with a temperature of 80° C. for 5 times, and each quinoline consumption is 7 mL;

[0024] C, the insoluble matter on the filter paper of step B is washed repeatedly with the commercial analysis pure toluene that temperature is 70 ℃, until the washing liquid is without yellow, the soluble matter on the filter paper is dissolved in quinoline, toluene;

[0025] D. The filter paper washed in step C is sucked and dried, dried at 115° C., and then taken out and cooled;

...

Embodiment 3

[0029] A. Weigh 1.0650g of soft asphalt sample, add 25mL of quinoline per 1 gram of soft asphalt sample, put the soft asphalt sample into commercially available analytical pure quinoline at 80°C, stir from time to time to make the soft asphalt The sample is completely dissolved in quinoline, and filtered with filter paper, so that the quinoline insoluble matter remains on the filter paper;

[0030] B. The insoluble matter on the filter paper of step A was washed 6 times with commercially available analytically pure quinoline at a temperature of 70° C., and the amount of each quinoline was 6 mL;

[0031] C, be that the commercial analysis pure toluene of 80 ℃ with temperature washs the insoluble matter on the filter paper of step B repeatedly, until washing liquid is without yellow, the soluble matter on the filter paper is dissolved in quinoline, toluene;

[0032] D. The filter paper washed in step C is sucked and dried, dried at 118° C., and then taken out and cooled;

[003...

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PUM

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Abstract

The invention provides a measurement method of a soft asphalt quinoline insoluble substance. The method comprises the following steps of: putting a soft asphalt sample into quinoline for completely dissolving the soft asphalt sample into quinoline, and performing suction filtration with filter paper to leave the quinoline insoluble substance on the filter paper; washing the insoluble substance for 4-6 times by using quinoline, repeatedly washing the insoluble substance with toluene till a washing solution is not yellow, and dissolving the insoluble substance on the filter paper into quinoline and toluene; performing suction filtration on the washed filter paper, drying at the temperature of 115-120 DEG C, and cooling; washing the filter paper for 8-12 times with distilled water, dissolving diethylene glycol on the filter paper into water, and filtering; and soaking the filter paper with toluene, performing suction filtration, drying the filter paper at the temperature of 115-120 DEG C, weighing, and calculating to obtain the content of the quinoline insoluble substance. According to the method, accurate content of the quinoline insoluble substance in soft asphalt can be obtained, the enhancement on the quality of soft asphalt is facilitated, production of an acicular coke product is easy to control, and the quality of the acicular coke product is further guaranteed.

Description

technical field [0001] The invention relates to a determination method, in particular to a determination method of quinoline insoluble matter in refined soft asphalt, belonging to the technical field of chemical analysis and testing. Background technique [0002] The content of quinoline insolubles is an important indicator for evaluating the quality of needle coke raw material—soft pitch. The lower the content, the better it is required in production. When the content is too high, solvent pretreatment is required to remove the quinoline in it. Therefore, it is necessary to measure the content of quinoline insolubles in soft asphalt to meet production needs. Since there is no relevant standard for determining the content of quinoline insolubles in refined soft asphalt in the prior art, it is mostly determined with reference to "GB / T2293-2008 Test Method for Quinoline Insolubles in Coking Asphalt Products", but due to the fact that refined soft asphalt Contains part of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
Inventor 龙菊兴尹思聪毛艾萍王自芳徐东升胡永
Owner 云南昆钢煤焦化有限公司
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