Shale gas-to-syngas chemical looping process for stable shale gas conversion to high purity syngas with a H₂ : CO ratio of 2 : 1

Chemical‐looping technology platform

“…Under high‐pressure oxidation‐reduction cycles, high‐particle porosity within the metal oxides is observed. These porosity effects corroborate the faster redox kinetics observed at higher pressures as compared to atmospheric pressures …”

“…Gas channeling in a fluidized bed can produce a gas mixture consisting of unreacted fuel and syngas at the reactor outlet. Alternatively, in a moving‐bed reactor with a cocurrent gas‐solid flow pattern, the residence time distribution and the extent of the oxygen‐carrier conversion can be accurately controlled while preventing carbon deposition . At the inlet of the reactor, the high concentration of fuel feed reacts with the high‐oxidation‐state metal oxides.…”

Chemical looping technology for energy and chemical production

“…Iron‐titanium metal oxide (ITCMO) was determined as the optimum oxygen carrier for CLPO chemical looping process. Thermodynamic simulations and experimental results prove the CLPO chemical looping process with ITCMO oxygen carriers is capable of producing >90% purity syngas at nearly a 2:1 H 2 :CO ratio …”

“…Fan et al developed a CLPO process called the shale gas to syngas (STS) chemical looping process using a co‐current packed bed configuration with iron oxide and demonstrated the process in sub‐pilot scale unit . Experiments were conducted with atomic oxygen to methane ratios at 2.2 and 2.8 were used.…”

La‐hexaaluminate for synthesis gas generation by Chemical Looping Partial Oxidation of Methane Using CO2 as Sole Oxidant

“…Application of the “chemical looping” principle to POM (chemical looping partial oxidation of methane, CL‐POM) offers an opportunity to resolve the above issue by temporally or spatially separating CH 4 conversion into two half steps coupled with the transport of an “oxygen carrier” (OC; typically a metal oxide, MO) . During the reduction half step (reducer), methane is selectively oxidized to synthesis gas (H 2 /CO = 2) by the lattice oxygen of the OC (MO + CH 4 = M + 2H 2 +CO), and then the reduced OC (M) is transferred to the regeneration reactor (oxidizer) and re‐oxidized by air or H 2 O (2M + O 2 = 2MO, M + H 2 O = MO + H 2 ).…”