关键词: 微型化, 微通道, 微反应器, 微换热器, 过程强化

Abstract: Micro-chemical technology is a new frontier originating in the early 1990s. This technology focuses on the study of the chemical engineering processes in and the principles of the micro-devices and micro-systems whose characteristic length and time scale are less than hundreds of microns and hundreds of milliseconds respectively.Micro-chemical system can be divided into four sub-systems, i.e. micro-heat system, micro-reaction system, micro-separation system and micro-analysis system. Because of the small dimension of the micro-devices, the specific surface area increases, the surface effect is enhanced, and the effects of transportation (flow, heat transfer and mass transfer) lead to a remarkable increase of transfer rates, which exceed those of conventional-sized devices by 2—3 orders of magnitude. The application of micro-chemical technology can improve greatly the efficiency of process systems and decrease their volume and mass. The history, basic characteristics, research areas and developing orientation of micro-chemical technology are discussed in this paper.

Key words: 微型化, 微通道, 微反应器, 微换热器, 过程强化