Hydrogen was recovered and purified from coal gasification-produced syngas using two kinds of hybrid processes: a pressure swing adsorption (PSA)-membrane system (a PSA unit followed by a membrane separation unit) and a membrane-PSA system (a membrane separation unit followed by a PSA unit). The PSA operational parameters were adjusted to control the product purity and the membrane operational parameters were adjusted to control the hydrogen recovery so that both a pure hydrogen product (>99.9%) and a high recovery (>90%) were obtained simultaneously. The hybrid hydrogen purification processes were simulated using HYSYS and the processes were evaluated in terms of hydrogen product purity and hydrogen recovery. For comparison, a PSA process and a membrane separation process were also used individually for hydrogen purification. Neither process alone produced high purity hydrogen with a high recovery. The PSA-membrane hybrid process produced hydrogen that was 99.98% pure with a recovery of 91.71%, whereas the membrane-PSA hybrid process produced hydrogen that was 99.99% pure with a recovery of 91.71%. The PSA-membrane hybrid process achieved higher total H₂ recoveries than the membrane-PSA hybrid process under the same H₂ recovery of membrane separation unit. Meanwhile, the membrane-PSA hybrid process achieved a higher total H₂ recovery (97.06%) than PSA-membrane hybrid process (94.35%) at the same H₂ concentration of PSA feed gas (62.57%).

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使用两种混合工艺从煤气化生产的合成气中回收和纯化氢气：变压吸附（PSA）-膜系统（PSA单元后接膜分离单元）和膜-PSA系统（膜分离单元）然后是PSA单元）。调节PSA操作参数以控制产物的纯度，并调节膜操作参数以控制氢的回收率，以便同时获得纯氢产物（> 99.9％）和高回收率（> 90％）。使用HYSYS对混合氢的提纯过程进行了模拟，并对过程的氢气产物纯度和氢气回收率进行了评估。为了进行比较，还单独使用了PSA工艺和膜分离工艺进行氢气纯化。两种方法都不能单独产生具有高回收率的高纯度氢气。PSA膜混合工艺产生的氢气纯度为99.98％，回收率为91.71％，而PSA膜混合工艺生产的氢气纯度为99.99％，回收率为91.71％。PSA-膜混合工艺获得了更高的总H₂回收率比相同的H下的膜- PSA混合过程₂膜分离单元的恢复。同时，在相同的PSA进料气H ₂浓度（62.57％）下，膜-PSA混合工艺的总H ₂回收率（97.06％）高于PSA-膜混合工艺（94.35 ％）。

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