Syngas production plus reducing carbon dioxide emission using dry reforming of methane: utilizing low-cost Ni-based catalysts

Abstract

Applicability of using Dry Reforming of Methane (DRM) using low-cost Ni-based catalysts instead of Conventional Steam Reformers (CSR) to producing syngas simultaneously with reducing the emission of carbon dioxide was studied. In order to achieving this goal, a multi-tubular recuperative thermally coupled reactor which consists of two-concentric-tubes has been designed (Thermally Coupled Tri- and Dry Reformer [TCTDR]). By employing parameters of an industrial scale CSR, two proposed configuration (DRM with fired-furnace and Tri-Reforming of Methane (TRM) instead of fired-furnace (TCTDR)) was simulated. A mathematical heterogeneous model was used to simulate proposed reactors and analyses were carried out based on methane conversion, hydrogen yield and molar flow rate of syngas for each reactor. The results displayed methane conversion of DRM with fired-furnace was 35.29% and 31.44% for Ni–K/CeO2–Al2O3 and Ni/La2O3 catalysts, respectively, in comparison to 26.5% in CSR. Methane conversion in TCTDR reached to 16.98% by Ni/La2O3 catalyst and 88.05% by NiO–Mg/Ce–ZrO2/Al2O3 catalyst in TRM side. Also, it was 15.88% using Ni–K/CeO2–Al2O3 catalyst in the DRM side and 88.36% using NiO–Mg/Ce–ZrO2/Al2O3 catalyst in TRM side of TCTDR. Finally, the effect of different amounts of supplying energy on the performance of DRM with fired-furnace was studied, and positive results in reducing the energy consumption were observed.

Fischer–Tropsch synthesis over Pd promoted cobalt based mesoporous supported catalyst

“…Although FT was discovered about a century before, still it is an attractive and alternative source of environmentally benign liquid hydrocarbon fuels with near-zero sulfur and aromatic compounds. FT synthesis is a catalytic reaction in which syngas (a mixture of CO and H 2 ) is converted to liquid hydrocarbon fuels [2,3]. FT synthesis has received considerable worldwide attention in both industrial as well as in academic domains.…”

Assessment of composition and calcination parameters in Fischer-Tropsch synthesis over Fe–Mn–Ce/γ-Al2O3 nanocatalyst

“…Fischer-Tropsch Synthesis (FTS) as a favorite heterogeneous catalytic process for the chemical industry and research teams is the conversion of synthesis gas (H 2 + CO) into a mixture of hydrocarbons with the advantages of low content of toxic and carcinogenic pollutants including sulfur and aromatics [1][2][3][4][5][6][7][8][9][10][11]. Light olefins (C ¼ 2 À C ¼ 4 ) as part of hydrocarbons, are extremely important because they are feedstocks for the synthesis of economically valuable products such as polymers, detergents and solvents [12,13].…”