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首页> 外文期刊>Iron & Steel Review >New technologies for BOF primary gas cleaning: 2nd generation of dry-type ESP and Hydro Hybrid Filter technology
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New technologies for BOF primary gas cleaning: 2nd generation of dry-type ESP and Hydro Hybrid Filter technology

机译：转炉一次气体清洗的新技术：第二代干式电除尘器和水电混合过滤技术

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The compliance with environmental regulations and energy recovery in steelmaking plants have become a major issue within the last few years. Thus, clean, green and sustainable technologies for the steel industry have become a major focus. In BOF plants, utilizing converter gas recovery, nowadays gas cleaning is only possible by wet scrubber or round dry-type electrostatic precipitators (ESP). As environmental regulations will become more restrictive and wet scrubbers may no longer fulfill these requirements, dry-type ESP are a suitable alternative. However, the current generation of ESP for BOF primary off-gas dedusting processes do not comply with the latest available state-of-the-art ESP technology. Due to this fact, the two companies SMS Siemag and ELEX have founded a joint venture, the new company SMS ELEX AG, with the intention to develop a new generation of gas cleaning equipment for converter off-gas from BOF meltshops. Consequently, SMS ELEX has designed a 2nd generation of round dry-type ESP, incorporating the latest electric filter know-how. Moreover, a brand new process has been developed and patented to upgrade existing gas cleaning systems using wet scrubbers with a round wet-type ESP. The combination of these two technologies is called Hydro Hybrid Filter and enables existing BOF scrubber units to comply with most restrictive environmental regulations, at very low investment cost. The presentation illustrates the main points of improvement of the 2nd generation dry-type ESP. Secondly, the principle of the Hydro Hybrid Filter will be explained, followed by highlighting investment cost and the effects on operating costs.
机译：在过去的几年中，遵守环保法规和炼钢厂的能源回收已成为一个主要问题。因此，用于钢铁工业的清洁，绿色和可持续技术已成为主要焦点。在转炉工厂中，利用转炉气体回收，如今只有通过湿式洗涤器或圆形干式静电除尘器（ESP）才能进行气体清洁。由于环境法规将变得更加严格，并且湿式洗涤塔可能不再满足这些要求，因此干式ESP是一种合适的替代选择。但是，当前用于BOF初级除尘工艺的ESP不符合最新可用的最新ESP技术。因此，SMS Siemag和ELEX两家公司成立了一家合资公司，即新的SMS ELEX AG公司，目的是为BOF熔炼厂的转炉废气开发新一代的气体净化设备。因此，SMS ELEX设计了第二代圆形干式ESP，并结合了最新的电过滤器知识。此外，已经开发了一种全新的工艺并申请了专利，以使用带有圆形湿式ESP的湿式洗涤器升级现有的气体清洁系统。这两种技术的结合称为水力混合过滤器，可使现有的BOF洗涤塔单元以极低的投资成本满足最严格的环境法规要求。该演示说明了第二代干式ESP的改进要点。其次，将说明水力混合过滤器的原理，然后重点介绍投资成本及其对运营成本的影响。

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