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Apparatus and its determination method for determining granulated material specific surface area

A technology of granular materials and specific surface area, applied in the direction of analyzing materials, measuring devices, instruments, etc., can solve the problems of inconvenient measurement and complex structure, etc.

Inactive Publication Date: 2010-08-04
涂志龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of equipment needs to use an air pump, the structure is complicated, and the measurement is not very convenient.

Method used

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  • Apparatus and its determination method for determining granulated material specific surface area
  • Apparatus and its determination method for determining granulated material specific surface area
  • Apparatus and its determination method for determining granulated material specific surface area

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Such as figure 1 The device for measuring the specific surface area of ​​the granular material shown includes a U-shaped mercury manometer 1, a sample bottle 2, a three-way reversing valve 3, an activated carbon storage bottle 4 and liquid nitrogen for cooling the temperature of the sample bottle 2. One end of the U-shaped mercury manometer 1 is open to the atmosphere, and the other end is respectively connected to the sample bottle 2 and the three-way reversing valve 3 through a conduit, and the other two ends of the three-way reversing valve 3 are respectively connected to the activated carbon storage bottle 4 and the atmosphere. The outside of the sample bottle 2 is provided with a vacuum jacket 5 .

Embodiment 2

[0064] 1. Determination of a' and b' of sample bottle 2

[0065] Insert the clean sample vial 2 into the device and check all connections for air leaks. Then the three-way reversing valve 3 is rotated until the activated carbon storage bottle 4 communicates with the system (isolated from the atmosphere at this time), and the activated carbon storage bottle 4 is cooled with liquid nitrogen. At the temperature of liquid nitrogen, the air in the sample bottle 2 and the pipeline is adsorbed by activated carbon to reduce the pressure of the system. After the adsorption reaches balance, remove the liquid nitrogen, and the rotary piston makes the atmosphere communicate with the gac storage bottle 4 (isolated from the system), so that the air adsorbed by the gac is desorbed to prevent excessive pressure in the storage bottle. Then rotate the piston to connect the atmosphere with the system, adjust the pressure in the system, and increase it to a certain value. Close the piston to is...

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PUM

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Abstract

The invention relates to the equipment and measuring method of granular material specific surface, especially, it relates to the equipment and measuring method of a specific surface detection of bamboo char. The equipment of granular material specific surface detection, which includes U type mercury gauge, sample container,three-way change valve, pressure setting equipment and cryogenic cooling device of cooling the temperature of the sample container, the one end of U type mercury gauge open to the atmosphere, the other end connects separately with sample container and three-way change valve, the other two end three-way change valve connect with pressure setting equipment and atmosphere,. The invention has no use for vacuum apparatus. It's a simple and easy method of testing specific surface area quickly. It adapts to test specific surface area of bamboo char; it has great value for setting quality evaluation system of bamboo char. The invention also discloses the measuring method ofthe above equipment.

Description

technical field [0001] The invention relates to equipment for measuring the specific surface area of ​​granular materials and a measuring method thereof, in particular to a device for measuring the specific surface area of ​​bamboo charcoal and a measuring method thereof. Background technique [0002] The existing specific surface area measuring instrument can only measure the specific surface area at 2000cm 2 There is no suitable instrument for the specific surface area of ​​powdery materials above / g, and for the specific surface area of ​​fine granular materials. Especially for the bamboo charcoal industry, the specific surface area of ​​bamboo charcoal is the most critical factor affecting the adsorption performance, and there is no method and equipment for measuring the specific surface area of ​​bamboo charcoal products. [0003] Chinese utility model patent CN2199525Y discloses a granular material specific surface area measuring instrument for physical property testi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/00G01B21/28
Inventor 刘子阳涂志龙
Owner 涂志龙