Mop fan and electrofilter: An innovative approach for cleaning product gases from biomass gasification

在拟议的项目中，三个合作伙伴（诺丁汉大学（英国），柏林工业大学（德国）和ober - beth Filtration GmbH（德国））以及分包商（ERK Eckrohrkessel GmbH（德国））将共同研究，开发和评估模块化和适应性强的产品气体净化概念，该概念由创新和成熟的气体净化技术组成，即拖把风扇和电过滤器。主要目的是：(1)研究拖把风机在去除颗粒方面的性能；(2)研究电过滤器从产品气体中分离不同焦油成分的敏感性，改进电过滤器的设计，并可能降低电过滤器的投资成本。(3)探索拖把风机与电过滤器的结合，更好的净化产品气体。(4)优化拖把风扇和电过滤器的设计，使它们能够产生适合直接应用于内燃机等的清洁产品气体。(5)设计和测试具有结构表面管的高效紧凑型热交换器，用于气体冷却，以提高气体清洁概念的整体效率。拟建项目具有以下创新特点：(1)首次将拖把风机的概念应用于气化产品气体的清洗。(2)首次通过实验研究了电过滤器对不同焦油组分的焦油分离敏感性。(3)拖把风机与电过滤器的结合是一种全新概念的产品气体净化技术，在去除细小颗粒、焦油和化学污染物方面具有很大的潜力。(4)首次采用结构面管的高效紧凑型换热器对产品气体进行冷却。

With the proposed project, three partners (University of Nottingham (UK), Berlin University of Technology (Germany) and AEROB-BETH Filtration GmbH (Germany)) and a subcontractor (ERK Eckrohrkessel GmbH (Germany)) will jointly investigate, develop and evaluate a modular and adaptable product gas cleaning concept which consists of innovative and proven gas cleaning technologies, namely the mop fan and the electrofilter. The major objectives are:(1) To investigate the performance of the mop fan with respect to the removal of particles, ammonia and additional water soluble gas contaminants by adapting the design of the mop fan to the application of cleaning of product gases from biomass fluidized bed gasifiers(2) To investigate the sensitivity of an electrofilter with respect to separation of different tar components from the product gas and to improve the design and possibly reduce investment costs of electrofilter.(3) To explore the combination of mop fan and electrofilter for better product gas cleaning.(4) To optimise the designs of mop fan and electrofilter so that they can be used to produce clean product gas suitable for direct application in internal combustion engines etc.(5) To design and test high-efficiency compact heat exchangers with structured surface tubes for gas cooling to increase the overall efficiency of the gas cleaning concept.The proposed project has the following innovative features:(1) For the first time the concept of the mop fan will be applied to the cleaning of gasification product gas.(2) For the first time characterisation of an electrofilter in terms of sensitivity of tar separation for different tar components is to be experimentally investigated.(3) The combination of mop fan and electrofilter is a totally new concept of product gas cleaning technology and has great potentials in removing fine particles, tars and chemical contaminants.(4) The high-efficiency compact heat exchangers with structured surface tubes are used for cooling of product gas for the first time.