Combustion and flue gas treatment system and SOx removal unit

燃烧和烟道气体处理系统及SOx除去单元

Abstract

燃烧和烟道气体处理系统(1)包括用于使燃料与氧化剂燃烧来生成烟道气体的熔炉(2)、连接于NOx除去单元(3)和SOx除去单元(6)的用于烟道气体的导管(15)、用于使烟道气体的一部分再循环回到熔炉(2)的再循环管线(11)。SOx除去单元(6)关于烟道气流位于NOx除去单元(3)上游,并且再循环管线(11)在SOx除去单元(6)下游连接于导管(15)。
The combustion and flue gas treatment system (1) comprises a furnace (2) for combusting a fuel with an oxidizer generating a flue gas, ducting (15) for the flue gas connected to a NO x removal unit (3) and a SO x removal unit (6), a recirculation line (11) for recirculating a part of the flue gas back to the furnace (2). The SO x removal unit (6) is located upstream of the NO x removal unit (3) with reference to the flue gas flow, and the recirculation line (11) is connected to the ducting (15) downstream the SO x removal unit (6).

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