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AssigneesChina Petroleum & Chemical Corporation, Sinopec Dalian Research Institute of Petroleum and Petrochemicals Co., Ltd.
InventorsKai Qiao, Feng Zhou, Xiuna Yang, Huixia Ma, Rui Jiang, Shumei Zhang, Ping Jin, Shaozhong Peng
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A process for producing propylene involves dehydration of isopropanol. The dehydration process includes a step of subjecting a starting material containing isopropanol to a dehydration reaction in the presence of a dehydration catalyst comprising alumina to produce a product containing propylene. The starting material has a water content of 0.1 to 10.0 wt % (relative to 100 wt % of the total mass of the starting material), and the product has a total content of C2 unsaturated impurities and C3-C4 unsaturated impurities of 80 ppm or less (relative to 100 wt % of the total mass of the product).
A dehydration process, comprising a dehydration step of subjecting a starting material containing isopropanol to a dehydration reaction in the presence of a dehydration catalyst comprising alumina to produce a product containing propylene, wherein the starting material has a water content of 3.0 to 5.0 wt %, relative to 100 wt % of the total mass of the starting material, and the product has a total content of C2 unsaturated impurities and C3-C4 unsaturated impurities of 80 ppm or less, relative to 100 wt % of the total mass of the product, wherein said product has a C2 unsaturated impurities content of 50 ppm or less, and the conversion rate of isopropanol is 96.0-99.9%.
Dependencies are inferred from the claim text.