Recovering method of silica gel used for petroleum product fluorescent group composition analysis
A technology of petroleum products and recovery methods, applied in the direction of silicon oxide, silicon dioxide, etc., can solve problems such as difficulties, loss and loss of fine particles, and achieve the effect of simple and practical methods
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0019] Equipment and reagents used for recovery of silica gel
[0020] Recycled glass tube: 850mm long, 50mm outer diameter, 1000ml volume, 60mm long outlet tube, 8mm outer diameter, the upper part of the recycled glass tube has a plugged grinding mouth, 40mm in diameter, and the grinding plug has a vent pipe mouth; pressure; ethanol, analytically pure; distilled water; 1 1L beaker; 1 500ml measuring cylinder; iron stand; Standard samples were prepared with different contents.
[0021] A kind of silica gel to be recovered, GRACE silica Gel 923, with a particle size of 100-200 mesh, the recovery and treatment steps are as follows:
[0022] (1), first install glass balls on the lower part of the recycled glass tube, then cover the glass balls with cotton, fix the recycled glass tube on the iron stand, pour 500-600ml of silica gel to be recovered into the glass tube, and add silica gel at the same time While adding distilled water, add a total of 1000ml of distilled water to ma...
Embodiment 2
[0027] A kind of silica gel to be recovered, GRACE silica Gel 923, with a particle size of 100 to 200 mesh silica gel, the equipment used for recovering silica gel is the same as in Example 1, and the recovery and processing steps are as follows:
[0028] (1), first install glass balls on the lower part of the recycled glass tube, then cover the glass balls with cotton, fix the recycled glass tube on the iron stand, pour 500-600ml of silica gel to be recovered into the glass tube, and add silica gel at the same time While adding distilled water, add a total of 100ml of distilled water to make the silica gel evenly filled in the column;
[0029] (2), after the distilled water added in step (1) flows out from the column, add 100ml propanol to the glass column, and pressurize with nitrogen, the pressure is 1 atmosphere, the purpose of adding propanol is to utilize the strong alcohol Polarity displaces the oil and fluorescent indicator contained in the silica gel, and you will see...
Embodiment 3
[0033] A kind of silica gel to be recovered, GRACE silica Gel 923, with a particle size of 100 to 200 mesh silica gel, the equipment used for recovering silica gel is the same as in Example 1, and the recovery and processing steps are as follows:
[0034] (1), first install glass balls on the lower part of the recycled glass tube, then cover the glass balls with cotton, fix the recycled glass tube on the iron stand, pour 500-600ml of silica gel to be recovered into the glass tube, and add silica gel at the same time While adding distilled water, add a total of 500ml of distilled water to make the silica gel evenly filled in the column;
[0035] (2), after the distilled water added in step (1) flows out from the column, add 300ml butanediol to the glass column, and pressurize with nitrogen, the pressure is 3 atmospheres, the purpose of adding butanediol is to utilize alcohol The strong polarity of the silica gel will replace the oil and fluorescent indicator contained in the si...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More