Asphalt ball oxidation non-melting pretreatment method
A pitch ball, hourly technique
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029] Put 1 kg of 0.05mm naphthalene pitch balls into the oxidation non-melting reactor, feed 50 liters / h of air, raise the temperature from room temperature to 80°C at a heating rate of 60°C / h, and stay for 2h; then switch to volume Mixed gas of n-heptane vapor and N2 with a ratio of 0.1:100, the gas flow rate is 100 liters / h, the temperature is raised from 80°C to 90°C at a heating rate of 60°C / h, and the temperature is raised for 5 hours to obtain asphalt balls with all naphthalene removed ;Finally switch to 300 liters / h of air from 90°C to 280°C at a heating rate of 240°C / h, and stay for 0.5h to obtain oxidized asphalt balls.
[0030] In the embodiment, the oxidation and non-melting degree of asphalt balls can be calculated according to the cohesive rate: the oxidized and non-melting pitch balls in N 2 Heat up to 800°C in the atmosphere and stay for 1 hour to obtain carbonized asphalt balls; randomly select 30-50 carbonized asphalt balls, and the percentage of the total n...
Embodiment 2
[0034] Put 1 kg of 2mm naphthalene pitch-containing balls into the oxidation non-melting reactor, feed 150 liters / h of air, raise the temperature from room temperature to 80°C at a heating rate of 10°C / h, and stay for 10h; then switch to volume ratio It is a mixed gas of 30:100 methanol vapor and Ar, the gas flow rate is 500 liters / h, the temperature is raised from 80°C to 120°C at a heating rate of 5°C / h, and the temperature is raised for 50 hours to obtain asphalt balls with all naphthalene removed; finally switch 1000 liters / h of air is heated from 120°C to 350°C at a rate of 100°C / h, and stays for 5 hours to obtain oxidized asphalt balls.
[0035] After testing, the bonding rate is 0.1%, the oxygen content is 6.3wt%, CO 2 The specific surface area is 94.4m 2 / g, the pore structure is shown in the attached figure 2 .
Embodiment 3
[0037] Put 1 kg of 1mm naphthalene pitch-containing balls into the oxidation non-melting reactor, feed 100 liters / h of air, raise the temperature from room temperature to 50°C at a heating rate of 20°C / h, and stay for 20h; then switch to volume ratio It is a mixed gas of 20:100 petroleum ether vapor and N2, the gas flow rate is 300 liters / h, the temperature is raised from 50°C to 100°C at a heating rate of 10°C / h, and the temperature is raised for 30h to obtain asphalt balls from which all naphthalene has been removed; finally Switch to 500 liters / h of air from 100°C to 300°C at a heating rate of 120°C / h, and stay for 3 hours to obtain oxidized pitch balls.
[0038] After testing, the bonding rate is 0.08%, the oxygen content is 8.8wt%, and the CO 2 The specific surface area is 100.9m 2 / g, the pore structure is shown in the attached image 3 .
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More