Aspen PlusTM Process Design for the Liquid Hydrogen Production by Steam Reformingof Used Automotive Lubricating Oil

摘要

The objective of this study is to develop a process for the production of pure liquidhydrogen from used automotive lubricating oil using Aspen PlusTM Chemical Process Simulator(CPS). The reformer is simulated as a Gibbs reactor to fractionate the large oil molecules. Amethane reformer converts methane into carbon monoxide and hydrogen. A water-gas shiftunit, simulated as an equilibrium reactor, is used to enhance the production of hydrogen. Aflash separator is used to knock out excess water from the product stream. Aspen AdsimTM isincorporated to simulate the adsorption process of the pressure swing adsorption (PSA). Theoff-gas is burned with air in a combustor, and the generated energy is used to heat theprocessing units. A hydrogen liquefaction unit, simulated as a Claude densifier cycle, is usedto convert gaseous hydrogen to liquid hydrogen. The performance of plant is investigated as afunction of temperature and steam-to-oil ratio.