公开(公告)号：US11649168B2

公开(公告)日：2023-05-16

申请号：US16870539

申请日：2020-05-08

申请人： Taiwan Speciality Chemicals Corporation

发明人： Sung-Yueh Shieh ,  Teng-Chih Lee

IPC分类号： C01B33/04

CPC分类号： C01B33/046

摘要： A high-purity n-tetrasilane purification method includes: introducing a tetrasilane (Si4H10) isomeric mixture into a solidifying purification tank, cooling the tetrasilane (Si4H10) to a predetermined temperature with refrigerant in the solidifying purification tank, maintaining the predetermined temperature between the freezing temperature of the n-tetrasilane (n-Si4H10) and of the i-tetrasilane (i-Si4H10), solidifying the n-tetrasilane (n-Si4H10) in the tetrasilane (Si4H10) isomeric mixture into solid state, and vacuuming the i-tetrasilane (i-Si4H10) from the mixture for separation.

公开(公告)号：US20210347644A1

公开(公告)日：2021-11-11

申请号：US16870539

申请日：2020-05-08

申请人： Taiwan Speciality Chemicals Corporation

发明人： SUNG-YUEH SHIEH ,  TENG-CHIH LEE

IPC分类号： C01B33/04

摘要： A high-purity n-tetrasilane purification method includes: introducing a tetrasilane (Si4H10) isomeric mixture into a solidifying purification tank, cooling the tetrasilane (Si4H10) to a predetermined temperature with refrigerant in the solidifying purification tank, maintaining the predetermined temperature between the freezing temperature of the n-tetrasilane (n-Si4H10) and of the i-tetrasilane (i-Si4H10), solidifying the n-tetrasilane (n-Si4H10) in the tetrasilane (Si4H10) isomeric mixture into solid state, and vacuuming the i-tetrasilane (i-Si4H10) from the mixture for separation.

公开(公告)号：US10647582B1

公开(公告)日：2020-05-12

申请号：US16567559

申请日：2019-09-11

申请人： Taiwan Speciality Chemicals Corporation

发明人： Sung-Yueh Shieh ,  Teng-Chih Lee

IPC分类号： C01B33/04 ,  B01J19/00 ,  B01D3/14 ,  B01D29/66 ,  B01D29/52 ,  B01J12/00 ,  B01J19/18 ,  F25J1/00

摘要： The high-efficiency synthesis and purification recycling system of higher silane has a liquid nitrogen cooling system. The liquid nitrogen cooling system has a liquid nitrogen storage tank for being configured to distribute −196° C. liquid nitrogen via a first cooling tube to the hydrogen column and the mono-silane column for a first cooling process; a second cooling tube is configured to distribute −160° C. nitrogen after the first cooling process into the first distillation column, the second distillation column, the third distillation column and the recycling drum for a second cooling process, a third cooling tube is configured to distribute −30° C. nitrogen after the second cooling process into the disilane drum for a third cooling process, and a fourth cooling tube is configured to distribute 25° C. nitrogen after the third cooling process into the silicon particle disposal system for a blowback regeneration process and to generate an anaerobic environment.