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在深入研究单行程红外辐射振动流化种子干燥的基础上，本文开拓出双行程振动流化干燥，其特点是在干燥过程中种子与供热热风均经两次行程，干燥装置总高度不变，其干燥行程增加20％．通过非稳态干燥动力学实验研究表明，增加内行程种子总脱水率增加87％，总干燥周期为单行程的1／1．8，料温为其0．82（47℃／57℃）倍．由于增加内筒使恒速段延长并提高了梅这段的干燥速率，整个干燥过程适应种子的生理生化特性，因而可保持种子的活力。文中根据干燥速率方程分别实验研究了辐射、对流与导热在强化种子传热传质过程中的各自贡献．这些研究为我国的‘种子工程’尤其是品种繁多、特性各异干燥难度较高的蔬菜种子干燥提供了理论依据与技术基础。
On the basis of studying the drying of infrared radiation vibrating fluidized seed in one-way, this paper developed a dual-stroke vibration fluidized drying, which is characterized by that the hot air of seed and heating are both traveled during the drying process, and the total height of the drying device is unchanged , The drying stroke increased by 20%. The experimental results of unsteady drying kinetics show that the total dehydration rate of inner-stroke seeds increased by 87%, the total drying cycle was 1 / 1.8 of one-stroke, and the feed temperature was 0.82 (47 ℃ / 57 ℃) . Due to the increase of the inner cylinder to extend the constant velocity section and increase the drying rate of this section of the plum, the whole drying process adapts to the physiological and biochemical characteristics of the seed so as to maintain the vigor of the seed. According to the drying rate equation, the contributions of radiation, convection and heat transfer in the process of heat and mass transfer of enhanced seeds were studied experimentally. These researches provide theoretical basis and technical basis for the “seed engineering” of our country, especially the drying of vegetable seeds with wide variety and different characteristics of drying.