论文部分内容阅读
化工生产耗能中,热能占有相当大的比例。同时,随着流体与物料散失的废热量也十分可观,其中<100℃的低温余热约占工业总余热量的1/4。因此,低品位热能也是化工节能中的一个理所当然的目标,已经引起了能量管理人员和研究人员的关注。这方面的工作近几年来有了相当的进展。本文拟就有关低品位热能回收技术作一概要介绍。一、热转换器热转换器是一套可以高效地将60～100℃度废热升温40℃以上,使它变为有用热能的装置。它的操作原理是:利用氨比较容易气化和液化的性质,在一个闭路循环体系中,通过控制氨的蒸发及液化而使水溶液中的氨
Energy consumption in chemical production, thermal energy occupy a large proportion. At the same time, with the loss of fluid and material waste heat is also very impressive, of which <100 ℃ low temperature waste heat accounts for about 1/4 of the total industrial heat. Therefore, low-grade heat energy is also a natural target in chemical energy conservation and has drawn the attention of energy managers and researchers. There has been considerable progress in this area in recent years. This article intends to make a summary about low-grade heat recovery technology. First, the heat exchanger Heat exchanger is a set of can efficiently 60 ~ 100 ℃ waste heat temperature above 40 ℃, making it useful heat device. Its operating principle is: the use of ammonia easier to gasification and liquefaction properties, in a closed-loop system, by controlling the evaporation and liquefaction of ammonia so that the aqueous ammonia