INITIATING STARTUP OF PRESSURE SWING ADSORPTION ASSEMBLIES IN HYDROGEN-PROCESSING SYSTEMS

摘要

Systems and methods for initiating startup of PSA assemblies in hydrogen-processing assemblies, which may include a hydrogen-generation assembly and/or a fuel cell stack. The systems and methods include startup procedures that provide for pressurization of the adsorbent beds of the PSA assembly without the need for a stored quantity or other supply of purified hydrogen gas. The systems and methods additionally or alternatively include startup procedures that restrict or even prevent contamination of portions of the PSA assembly, hydrogen storage devices and/or accumulator tanks with an impure gas stream and/or decrease accumulation of the impure gas stream therein. This impure gas stream may be the mixed gas, reformate, or other gas stream that is intended to be purified by the PSA assembly when the PSA assembly is in its hydrogen-purifying operating state.