Development of non-equilibrium plate-type reactor with hydrogen separation, membrane

本研究开发了研究者提出的一种新型结构的燃料重整器。该反应器由带有燃料重整催化剂板、氢膜和氢回收板的单元组成。本研究为燃料重整概念的实验论证和新型高性能氢膜的研制进行了探讨。该装置不同于传统的填料床型转化装置，通过氢渗透膜将板催化剂反应表面产生的氢去除。板式重整器具有产氢率高、利用氢膜降低重整温度、重整催化剂板内温度分布均匀、重整装置紧凑等优点。研究从板式反应器重整实验、重整器数值分析和一种氢透膜的研制三个角度进行论证。制备了具有重整催化剂、氢透膜和氢回收通道的单单元稀土反应器，用于重整论证。甲醇和甲烷作为重整燃料。测定了重整速率、氢气渗透速率、温度分布。在甲醇重整过程中，重整温度降低了20 ~ 50℃，产氢率提高了15%。在甲醇重整过程中，重整温度由700 ~ 800℃降至450 ~ 600℃，在620℃时，产氢率由62%提高到80%，在480℃时，产氢率由80%提高到94%。研究了一种新型的氢透膜制备方法。钯（Pd）合金是传统的膜材料。但是，它与黄金一样昂贵，并且需要减少膜的使用量。一般来说，钯膜需要20微米以上的厚度来保持硬度。在本研究中，开发了一种厚度小于5微米的新型Pd合金膜，该膜由另一种金属材料膜支撑。实验验证了该膜的透氢性能。结果表明，与常规钯合金膜相比，该膜具有更高的单位钯合金质量透氢率。本研究证明了板式转化炉的可行性。少

Anew structure type fuel reformer proposed by investigator was developed in this research. The reactor consists of stuck of units having plates for fuel reforming catalyst, hydrogen membrane and hydrogen recovery. The research discussed for the demonstration of the fuel reforming concept experimentally, and also a new type hydrogen membrane having high performance.The proposed reformer is different from conventional packed bed type reformer, and removes produced hydrogen from reaction surface of the plate catalyst via a hydrogen permeation membrane. The plate type reformer has merits of high-hydrogen productivity, reduction of reforming temperature by using the hydrogen membrane, and also homogeneous temperature distribution in reforming catalyst plate, compactness of the rector. The research approaches the demonstration from three stand points of plate-type reactor reforming experiment, numerical analysis of the reformer and a hydrogen permeation membrane development.Single unit of re … More former having a reforming catalyst, hydrogen permeation membrane and hydrogen recovery channel was prepared for the reforming demonstration. Methanol and methane were used reforming fuel. Reforming rate, hydrogen permeation rate, temperature distribution were measured. In the methanol reforming, reforming temperature reduction of 20-50 degree C. and hydrogen yield increase of 15 % was demonstrated. In the methanol reforming, reforming temperatures were reduced from 700-800 deg. C to 450-600 deg. C. The hydrogen yield was increased from 62 % to 80 % at 620 deg. C., and also from 80 % to 94 % at 480 deg. C. The reforming performance showed the possibility of the reformer. New method of hydrogen permeation membrane was examined in this research. Palladium (Pd) alloys is conventional material for the membrane. However, it is quite expensive like gold, and is required to be reduced usage amount for the membrane. Generally, the Pd membrane needs a thickness more than 20 micro m to keep the hardness. In this study, a new Pd alloy membrane having thickness of less 5 micro m, which was supported by another metal material membrane, was developed. The developed membrane performance for hydrogen permeation was demonstrated experimentally. The membrane has higher hydrogen permeability per Pd alloy mass compared with conventional Pd alloy membrane was demonstrated. This research demonstrated the possibility of the proposed plate-type reformer. Less