钢铁制造流程能源转换机制与能源利用效率分析

Energy conversion mechanism and energy efficiency of steel manufacturing process

从钢铁制造流程的属性和动态运行过程的物理本质出发,阐述了钢铁制造流程中铁素物质流和碳素能量流的行为规律和钢铁制造流程的能源转换机制,得出能源转换过程必然伴随能量的耗散,因此应尽量减少能源转换次数,并指出在钢铁制造流程中,铁素物质流与碳素能量流相伴而行,而碳素能量流与铁素物质流则时合时分。还构建了一个年产290万t的棒线材流程企业,计算了该流程的余热余能资源量及回收利用情况,并剖析了该流程的能源利用效率。最后指出高效回收利用余热余能和构建合理的物质流网络和能量流网络及两者协同优化的能源管控中心是提高钢铁企业能源利用效率的重要手段。

It starts from the nature and the physical essence of the dynamic operation of the steel manufacturing process.The behavior rules of ferruginous flow and energy flow is described,and the mechanism of energy conversion in the steel manufacturing processes is also described.It is concluded that the energy conversion process is inevitably accompanied by the energy dissipation,so the energy conversion time should be minimized.It is pointed out that in the steel manufacturing process,the ferruginous flow is accompanied by the energy flow,but the energy flow some-times operates with ferruginous flow,sometimes operates separately.A rod and wire mill with the annual output of 2.9 million tons is constructed.The recovery and utilization of the residual energy of this process are calculated according to the main production processes.The energy efficiency of this process is also analyzed.Finally,it is point out that improving the recovery rate of the residual energy and constructing an energy control center with the synergistically optimized energy flow network and material flow network are important ways to improve the energy efficiency of the whole steel enterprise.