Development of cost-effective methods to remove H2S from gas streams has attracted tremendous attentions because of H2S corrosion problems to distribution and refinery units and tightening regulations for controlling the H2S emission. We have discovered a catalytic oxidative process that can directly convert H2S to Elemental Sulfur (So) for recovery Moreover, the overall conversion unit is extremely compact and lightweight, which can be readily adapted in remote gas fields.
Advantages of our technologies:
The direct conversion of methane to an easily transportable liquid chemicals has been regarded as a 'Holy Grail' in the chemical industry. Methane, as the most abundant and low-cost hydrocarbon feedstock, is also the biggest non-CO2 greenhouse gas, yet its global warming potential is estimated to be 21 times more than CO2. The effective methane utilization could have tremendous economic and environmental benefits.
Developing low-cost methane to liquid conversion chemical processes has been one of the main focuses of SGTC Through many years R&D, we have made significant breakthroughs in gas to liquid (GTL) process. Specifically, we have demonstrated that our semi-hydrated solid oxidant combined with our methane-activation catalyst can partially oxidize methane to yield methanol, carbon monoxide and hydrogen.
Sulfur reduction is important for refineries for several reasons. 1) Many catalysts in reformer units are sensitive to the amount of sulfur in the feed; 2) Air pollution control standard requirement; 3) SO2 emission from the hydrogenation of the sulfur-containing coke; 4) Organosulfur content will poison the hydrocracking catalyst; 5) Most of sulfur compounds are corrosive.
Our unique approach is a 2-stage sulfur removal process, including a) using a fixed bed solid catalyst for the thermal cracking of crude oil to removal labile sulfur species, and b) using aqueous phase or gas phase oxidants to convert aromatic sulfur to water soluble species. The temperature ranges from 100-500 ℃, more preferred temperature range is from 150-250 ℃
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