Capture and reduction of carbon emissions to maximise circularity in the steelmaking process

捕获和减少碳排放，最大限度地提高炼钢过程的循环性

• 批准号: 2748804
• 金额: --
• 依托单位: Swansea University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2748804
• 关键词: Capture; reduction; carbon; emissions; maximise

Steel is a critical material when transitioning to a more circular economy due to its inherent recyclability whilst maintaining its properties. However, the steel industry contributes 7-8% of the global anthropogenic CO2 emissions. The problem the steel industry faces is reducing emissions whilst increasing supply to meet additional demand. It is key that this paradox is solved to prevent the CO2 emissions being "off-shored" which does not actually solve the problem. Carbon capture utilisation and storage (CCUS) has been shown to be technically feasible via a series of studies whereby CO2 emitted is captured processed and utilised as a feedstock to produce another material, examples being primary alcohols and aviation fuels.Technologies such as pressure swing absorption and sorption enhanced water gas shift have been shown to be effective in capturing and separating the gaseous emissions from the process and there have been some successes in producing useful chemicals from the clean CO2 stream via biological and catalytic processes.This study will capture process gases and develop processes to yield a 'clean' hydrogen and CO2. The CO2 will then be valorised into new products (e.g. methane). The rationale for production of methane is to utilise as a reductant in Direct Reduced Iron (DRI) production which is a forerunner in the potential solutions to reduce emissions from primary iron and steelmaking.

在向循环经济过渡时，钢铁是一种关键材料，因为它具有内在的可回收性，同时保持其性能。然而，钢铁工业贡献了全球人为二氧化碳排放量的7-8%。钢铁行业面临的问题是减少排放，同时增加供应以满足额外的需求。解决这一矛盾的关键是防止二氧化碳排放“离岸”，这实际上并不能解决问题。一系列研究表明，碳捕获、利用和储存（CCUS）在技术上是可行的，通过这些研究，排放的二氧化碳被捕获、加工并用作生产另一种材料的原料，例如伯醇和航空燃料。变压吸收和吸附增强水煤气变换等技术已被证明在捕获和分离来自该过程的气体排放物方面是有效的，在通过生物和催化过程从清洁的CO2流中生产有用的化学品方面已经取得了一些成功。2这项研究将捕获工艺气体并开发生产“清洁”氢气和CO2的工艺。二氧化碳将被转化为新产品（如甲烷）。生产甲烷的基本原理是用作直接还原铁（DRI）生产中的还原剂，这是减少原铁和炼钢排放的潜在解决方案的先驱。