具有融氢净化和氢压缩于一体等重要特性的金属氢化物化学热压缩器将成为未来加氢站的核心设备.本文简要介绍了金属氢化物化学热压缩器的工作原理及其特点,针对金属氢化物化学热压缩器对储氢合金的要求,研究开发了一种储氢性能优良、适合于作为化学氢压缩机用的稀土系储氢合金(Mm-Ml-Ca)(Ni-Al)5,测定了合金热力学和动力学性能.利用该合金设计制作了一台氢容量大于1000L、氢压大于40.0 MPa的压缩器样机,在20℃时氢压小于3.0 MPa可吸氢饱和,165℃放氢可得氢压大于40.0 MPa的超高压产品氢.原料氢纯度为98%时,产品氢纯度达到99.9999%.并且对压缩器的热效率进行了计算,其热效率达到21.9%.
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