Shape and particle size measuring method for tar residue

A measuring method and technology of tar residue, which are applied in the directions of measuring device, particle size analysis, particle and sedimentation analysis, etc., can solve the problems of tar residue shape and particle size measurement difficulties, etc., and achieve the effect of avoiding the entry of inferior raw materials and ensuring stable operation.

Inactive Publication Date: 2015-01-21
BAOWU CHARCOAL MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a tar residue morphology and particle size measure...

Method used

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  • Shape and particle size measuring method for tar residue
  • Shape and particle size measuring method for tar residue
  • Shape and particle size measuring method for tar residue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take some tar, dissolve it in hot quinoline at 80°C, stir and disperse it with 40KHz ultrasonic waves for 3 minutes; use a 4# sand core crucible while it is hot, filter it under vacuum, and then filter it three times with hot quinoline; Wash and filter 5 times; dry the sand core crucible with residue in an oven at 105°C to obtain solid particles (QI) in tar; take a small amount of dry powder obtained by suction filtration and place it in a clean container , add 2mL of absolute alcohol as a dispersant; disperse the agglomerated solid particles with 40KHz ultrasonic waves for 2 minutes, until the particles are invisible to the naked eye, and appear black and turbid; evenly apply the suspension containing solid particles on a glass slide, and wait for the alcohol to naturally Volatile; observe and measure under a reflection microscope, and take pictures at a certain magnification (200×). The particle size distribution was calculated using analytical software.

Embodiment 2

[0036] Take some tar residue, dissolve it in hot pyridine at 70°C, stir and disperse it with 40KHz ultrasonic wave for 5 minutes; use a G4 sand core crucible while it is hot, filter it under vacuum, and then filter it with hot quinoline for 5 times; wash it with acetone Suction filtration 3 times; dry the sand core crucible with residue in an oven at 150°C to obtain solid particles in tar; take a small amount of dry powder obtained by suction filtration, put it in a clean container, add 1 mL of Water alcohol as a dispersant; use 40KHz ultrasonic waves to disperse the agglomerated solid particles for 4 minutes until the particles are invisible to the naked eye and appear black and turbid; apply the suspension containing solid particles evenly on a glass slide, and dry the alcohol; Observe and measure under a microscope, and take photos at a certain magnification (500×). The particle size distribution was calculated using analytical software.

[0037] The particle aggregate str...

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Abstract

A shape and particle size measuring method for tar residue is disclosed. The method includes steps of: 1) sampling, dissolving the sample into a solvent, and stirring and dispersing by ultrasonic waves; 2) subjecting the sample in the step 1) to suction filtration; 3) drying; 4) dispersing a small amount of dry powder obtained by suction filtration; and 5) observing and calculating particle size distribution. By adoption of the technical scheme, a measuring method not influenced by medium variety, viscosity, temperature, or other conditions is developed to measure the shape and the particle size of the tar residue. By analysis on the shape and the particle size of the tar residue, abnormal conditions of foreign raw materials and an ultracentrifuge can be known in real time, thus avoiding feeding of raw materials of poor quality and ensuring stable operation of production devices.

Description

technical field [0001] The invention relates to a coal chemical processing technology, in particular to a method for measuring the form and particle size of tar residue. Background technique [0002] Only a few manufacturers in China have established analysis methods for tar residue content, and these methods can only analyze the residue content, but cannot analyze the shape and particle size of the residue. [0003] Chinese invention patent ZL03128257.1 discloses a sinking laser reflection point particle size measurement method, which uses a laser beam to measure the particle settling velocity, and then converts it into a particle size. It is measured under dynamic conditions and cannot measure opaque liquids and particle shapes. , the use is limited. The invention measures after separating the solid particles, and is not affected by medium type, viscosity, temperature and other conditions. [0004] Chinese invention patent 201110064339.4 discloses a particle size measuri...

Claims

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Application Information

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IPC IPC(8): G01N15/00G01N15/02
Inventor 杜亚平
Owner BAOWU CHARCOAL MATERIAL TECH CO LTD
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