How do colleagues handle the high-boiling compounds produced during the distillation of trichlorosilane?
Thread Content
May I ask how you guys handle the high-boiling substances produced during the distillation of trichlorosilane? Or add me on QQ 19542051, or leave a contact information in a comment
:Lol, I threw it – it wasn’t useful at all
Spending money to give to others`````````````
A hydrolysis tank can be built for hydrolysis!
Are boron and phosphorus included among the main components of high-boiling substances?
Reply to 5# mark810: High-boiling substances mainly refer to polymers.
I’m not involved in distillation, so I’m not familiar with their process; I’ll ask them when I have time to find out who is handling it
Generally, high-boiling substances are mixed with silicon tetrachloride, making them difficult to treat separately.
This post was last edited by zjiris on 2010-9-1 at 10:19. The high and low boiling points fractions produced during the distillation of trichlorosilane have small quantities, resulting in high recovery costs; therefore, they are simply washed away. For large quantities, secondary distillation can be carried out; it is recommended to return the high and low boiling points obtained from the subsequent distillation back to the synthesis distillation process
For the process of recovering hydrogen chloride using thermal oxidation treatment, see: http://blog.sina.com.cn/polysilicontech
It is generally not usable, as the content of high-boiling substances is very low; moreover, it is quite viscous. Most of what comes out of the distillation tower is still silicon tetrachloride.