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1. 发明授权

US3908969A Method and apparatus for air pollution control combined with safe recovery and control of gases from a bottom-blown steel converter vessel 失效
标题翻译：用于空气污染控制的方法和装置，以及来自底吹钢转炉船的气体的安全回收和控制
公开(公告)号：US3908969A
公开(公告)日：1975-09-30
申请号：US34030273
申请日：1973-03-12
申请人： PENNSYLVANIA ENGINEERING CORP
发明人： BAUM KURT , BAUM JOERG PETER , PEARCE JAI KUMAR , SCHROEDER DAVID LEE
IPC分类号： B01D47/10 , B01D53/34 , C21C5/40
CPC分类号： C21C5/40 , B01D47/10 , B01D53/34 , Y02P10/283
摘要： A gas collector hood is located close to the mouth of a converter vessel and has a diameter which is not much greater than the mouth of the vessel. A mixture of oxygen together with entrained powered materials based on process requirements and a hydrocarbon fluid as cooling agent are blown through tuyeres in the bottom of the vessel and diffuse through the hot metal in the vessel. The inherently finer dust produced from the bottom-blown oxygen process requires that for proper air pollution control a non-combustion system be used to take advantage of the increased agglomerating properties of iron oxides when produced in reducing atmospheres. When blowing is initiated in this process carbon monoxide and hydrogen evolve immediately and in order to render the gases inert, air is aspirated into the gas collector hood so that an inert gas plug is formed which purges the exhaust system of combustion air. A short time after blowing is initiated, the hood is brought down to proximity with the vessel in which case only a small percentage of the theoretically required air for combustion is aspirated. Nitrogen is injected as required into the hood in addition to air aspirated to artifically create inertization to turn down a heat at high carbon levels, for emergency vessel turn down, and for special heats. Near the end of a normal low carbon heat, air is again aspirated into the hood so that an inert gas plug is formed for safe turn down of the converter. Control of the system is achieved through high response sensors based on a gas analysis system independent of the components and products of combustion in the gas phase, operated together with automatic suction control incorporated as part of the gas cleaning system.
摘要翻译：气体收集器罩位于转换器容器的嘴部附近，并且具有不大于容器口部的直径。基于工艺要求的氧气与夹带的动力材料和作为冷却剂的烃流体的混合物通过容器底部的风嘴吹入并扩散通过容器中的热金属。从底吹氧气过程产生的固有更细的粉尘要求，为了适当的空气污染控制，使用非燃烧系统来利用当在还原气氛中生产时氧化铁的增加的附聚特性。当在该过程中开始吹入时，一氧化碳和氢气立即放出，为了使气体惰性，空气被吸入气体收集器罩中，从而形成惰性气体塞，其清除燃烧空气的排气系统。开始吹制后的短时间内，将发动机罩下降到容器附近，在这种情况下，只有少部分理论要求的燃烧空气被吸入。除了吸入的空气之外，根据需要将氮气注入罩中，以产生惰性化，以降低高碳水平的热量，紧急船只倒塌以及特殊加热。接近正常的低碳热的结束时，空气再次被吸入发动机罩中，从而形成惰性气体塞，用于转换器的安全转向。系统的控制是通过基于气体分析系统的高响应传感器实现的，独立于气相中的燃烧成分和产物，与作为气体清洁系统一部分的自动抽吸控制一起运行。

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