Reactor For Syngas Production Research Articles

Analysis of radiation heat transfer and temperature distributions of solar thermochemical reactor for syngas production

This paper investigated radiation heat transfer and temperature distributions of solar thermochemical reactor for syngas production using the finite volume discrete ordinate method (fvDOM) and P1 approximation for radiation heat transfer. Different parameters including absorptivity, emissivity, reflection based radiation scattering, and carrier gas flow inlet velocity that would greatly affect the reactor thermal performance were sufficiently investigated. The fvDOM approximation was used to obtain the radiation intensity distribution along the reactor. The drop in the temperature resulted from the radiation scattering was further investigated using the P1 approximation. The results indicated that the reactor temperature difference between the P1 approximation and the fvDOM radiation model was very close under different operating conditions. However, a big temperature difference which increased with an increase in the radiation emissivity due to the thermal non-equilibrium was observed in the radiation inlet region. It was found that the incident radiation flux distribution had a strong impact on the temperature distribution throughout the reactor. This paper revealed that the temperature drop caused by the boundary radiation heat loss should not be neglected for the thermal performance analysis of solar thermochemical reactor.

Power- and resource-saving process for producing syngas from natural gas in methanol production

The analysis of methanol production from syngas without feedstock recirculation flowing under constant pressure is carried out. Natural gas from Yamal deposits (Russian Federation) is used as feedstock. The catalytic conversion of natural gas to syngas is studied experimentally. The kinetic models of the reactions of steam conversion of methane and the model of the catalytic reactor for syngas production are built. The chemical process flowsheet for syngas production is calculated. The efficiency of the proposed chemical process flowsheet that allows producing target products (syngas and methanol) with low prime cost is demonstrated.

Hydrocarbons valorisation to cleaner fuels: H 2-rich gas production via fuel processors

This paper presents a panoramic overview of the experimental work carried out at Politecnico di Torino on the development of structured catalytic reactors for the production of H 2-rich streams from hydrocarbons, to be fed to PEM-FCs: short contact time catalytic partial oxidation (SCT-CPO) reactor for syngas production, micro-channelled reactors for syngas CO clean-up, water gas shift (WGS) and preferential oxidation (PROX). Concerning the reactor for methane SCT-CPO, 10% Ni deposited on irregular γ-Al 2O 3 particles presented the best performance (CH 4 conversion > 90%; H 2 selectivity > 95%) compared to 0.5% Rh deposited over γ-Al 2O 3 spheres. As regards the HT-WGS reaction, the best performance was obtained with the catalyst 1% Pt/(CeO 2 + TiO 2): it reached the thermodynamic equilibrium (inlet CO: 10% b.v.; WHSV = 40 Nl h −1 g cat −1) in the temperature range 450–525 °C, allowing the abatement of almost 60% of the CO present in the fed gas stream. Finally, the best performance towards CO-PROX reaction was obtained with the catalyst 1% Rh/(Al 2O 3 + 3A zeolite): it reached the complete CO conversion (inlet CO: 0.5% b.v.; WHSV = 40 Nl h −1 g cat −1; λ = 3) in the temperature range 130–160 °C, thus assuring an easy controllability of the system.