公开(公告)号：US12123063B2

公开(公告)日：2024-10-22

申请号：US18458173

申请日：2023-08-30

Applicant: University of Science and Technology Beijing ,  Beijing Kemi Rongcheng Energy Technology Co., Ltd.

Inventor： Kai Dong ,  Xin Ren ,  Rong Zhu ,  Guangsheng Wei ,  Chao Feng ,  Rongfang Su ,  Shaoyan Hu ,  Yun Zhou ,  Chunyang Wang ,  Zhitao Xue ,  Linghui Meng

IPC: C21C5/30 ,  C21C5/46 ,  C21C7/064

CPC classification number: C21C5/30 ,  C21C5/4606 ,  C21C5/466 ,  C21C7/0645 ,  C21C2005/4666

Abstract: A converter bottom blowing system comprises a first gas source connected in parallel with a lime powder silo, a lime powder blowing tank and a first injector, where a first cut-off valve is arranged between the lime powder blowing tank and the first injector; a second gas source connected in parallel with the biochar powder silo, the biochar powder blowing tank and the second injector, where a second cut-off valve is arranged between the biochar powder blowing tank and the second injector; a converter, where a plurality of bottom blowing lances are arrayed at a bottom of a converter, the bottom blowing lances are connected with the first injector and the second injector through a three-way valve, a third cut-off valve is arranged between the first injector and the three-way valve, and a fourth cut-off valve is arranged between the second injector and the three-way valve.

公开(公告)号：US10988818B2

公开(公告)日：2021-04-27

申请号：US16926483

申请日：2020-07-10

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Rong Zhu ,  Shaoyan Hu ,  Kai Dong ,  Guangsheng Wei ,  Haoran Ma ,  Weifeng Li ,  Yun Zhou ,  Zhihui Li ,  Wenhe Wu ,  Baochen Han ,  Chao Feng ,  Rongfang Su

IPC: C21C5/30 ,  B01D53/38 ,  B01D53/76 ,  C01G31/02 ,  C21C5/36 ,  C21C5/46

Abstract: An efficient long-service-life blowing method include the steps of introducing vanadium extraction converter flue gas and decarburization converter flue gas into an oxygen combustor; obtaining first-purity CO2—N2 mixed gas through the vanadium extraction converter flue gas; obtaining second-purity CO2—N2 mixed gas through the decarburization converter flue gas; obtaining O2—CO2—N2 mixed gas through the decarburization converter flue gas; obtaining first-purity CO2 gas through the second-purity CO2—N2 mixed gas; and using the first-purity CO2—N2 mixed gas for bottom blowing of the vanadium extraction converter, using the second-purity CO2—N2 mixed gas as a carrier gas for blowing iron ore powder into the vanadium extraction converter, and using the O2—CO2—N2 mixed gas and the first-purity CO2 gas as a carrier gas for bottom blowing of the decarburization converter and bottom injecting of lime powder into the decarburization converter.