In this study, the relationship between hearth wall erosion and deadman permeability was investigated based on the change in the hearth bottom and hearth sidewall temperatures. Additionally, the operation practice for...In this study, the relationship between hearth wall erosion and deadman permeability was investigated based on the change in the hearth bottom and hearth sidewall temperatures. Additionally, the operation practice for controlling hearth wall erosion in the large No. 1 blast furnace at Baosteel was also investigated. The reasons for the decrease in the permeability of deadman coke were analyzed, and measures for improving the permeability of deadman coke and controlling hearth wall temperature rising were described. The results show that a decrease in deadman coke permeability is the main reason for refractory temperature increase and hearth wall erosion. This indicates the importance of monitoring changes in hearth working conditions and taking appropriate measures to maintain sufficient permeability of the deadman and balance the hot metal flow and drainage of slag. At this rate, the decline in the hearth bottom temperature and fast rising of the hearth wall temperature can be restrained.展开更多
美国石油协会组织于2012年出版的API Standard 53标准相对于之前的API RP53,对水下防喷器的应急备用部分做出了强制性要求,需要配备自动剪切以及失效安全两种系统。针对该要求,目前现役的大部分水下防喷器控制系统需要进行升级改造。本...美国石油协会组织于2012年出版的API Standard 53标准相对于之前的API RP53,对水下防喷器的应急备用部分做出了强制性要求,需要配备自动剪切以及失效安全两种系统。针对该要求,目前现役的大部分水下防喷器控制系统需要进行升级改造。本文通过对规范的解读,对自动剪切及失效安全功能进行系统原理上的逐一分析,提出一种升级改造的设计思路。展开更多
文摘In this study, the relationship between hearth wall erosion and deadman permeability was investigated based on the change in the hearth bottom and hearth sidewall temperatures. Additionally, the operation practice for controlling hearth wall erosion in the large No. 1 blast furnace at Baosteel was also investigated. The reasons for the decrease in the permeability of deadman coke were analyzed, and measures for improving the permeability of deadman coke and controlling hearth wall temperature rising were described. The results show that a decrease in deadman coke permeability is the main reason for refractory temperature increase and hearth wall erosion. This indicates the importance of monitoring changes in hearth working conditions and taking appropriate measures to maintain sufficient permeability of the deadman and balance the hot metal flow and drainage of slag. At this rate, the decline in the hearth bottom temperature and fast rising of the hearth wall temperature can be restrained.
文摘美国石油协会组织于2012年出版的API Standard 53标准相对于之前的API RP53,对水下防喷器的应急备用部分做出了强制性要求,需要配备自动剪切以及失效安全两种系统。针对该要求,目前现役的大部分水下防喷器控制系统需要进行升级改造。本文通过对规范的解读,对自动剪切及失效安全功能进行系统原理上的逐一分析,提出一种升级改造的设计思路。
