Entity

Time filter

Source Type

Ningxia, China

Zheng D.,Petrochina | Li S.,China University of Petroleum - Beijing | Ma G.,Coal Chemical Company | Wang H.,Petrochina
Oil Shale | Year: 2012

Laboratory level autoclave pyrolysis experiments of Chinese Liushuhe oil shale have been conducted at different heating temperatures and pressures to simulate underground in-situ thermal conversion. Effects of water and metallic ions on oil shale pyrolysis have been investigated. In the presence of water, pyrolysis of oil shale generates thermal bitumen as an intermediate product at first, then pyrolysis of bitumen produces shale oil and gas takes place. With increasing temperature, the yields of shale oil and gas increase gradually, while the yield of bitumen initially increases (max. at 300 °C) and then decreases. Compared with the modified Fisher Assay, autoclave pyrolysis temperature of simulated experiment was 100 °C lower when reaching the same conversion level of oil shale. Analysis of the gas chromatography- mass spectrometry (GC-MS) showed that main chemical compounds of the light fraction in shale oil are phenols and benzenes. The analyses of gas chromatography showed high percentage of carbon dioxide and low percentage of hydrocarbons. The research results could provide theoretical information for underground in-situ thermal conversion of oil shale. © 2012 Estonian Academy Publishers. Source


Wang L.,Ministry Province Co cultivated State Key Laboratory Base of Natural Gas Conversion | Wang L.,Coal Chemical Company | Wang Z.,Ministry Province Co cultivated State Key Laboratory Base of Natural Gas Conversion | An L.,Ministry Province Co cultivated State Key Laboratory Base of Natural Gas Conversion | And 2 more authors.
Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) | Year: 2013

P modified ZSM-5/aluminophosphates composite zeolite (wP-ZSM-5/AlPO4-m) was obtained by NH4H2PO4 modification of ZSM-5/AlPO4-m and characterized by XRD, N2 adsorption-desorption, NH3-TPD, FT-IR and so on. The effects of P loaded amount in wP-ZSM-5/AlPO4-m and the reaction conditions, reaction temperature and space velocity, on methanol conversion and product selectivity of MTP were investigated. It was confirmed that the surface area, acid strength and acid amount of wP-ZSM-5/AlPO4-m were effectively regulated by P modification, and the maximum ratio of B acid and L acid reached 3.03 in 3%P-ZSM-5/AlPO4-m, which had the best catalytic activity and stability at the reaction temperature of 500°C and MHSV of 1 h-1. The conversion rate of methanol, selectivity of propylene, molar ratio of propylene and ethylene remained around 100%, 50% and 5, respectively, when the reaction continued for 73 h. Source


Wang L.,Coal Chemical Company | Yong X.-J.,Coal Chemical Company | Liu S.-L.,Coal Chemical Company | Gong Y.-J.,China University of Petroleum - Beijing | And 2 more authors.
Xiandai Huagong/Modern Chemical Industry | Year: 2016

Gasoline components from the coal MTP device of Shenhua (Ningxia) are qualitatively and quantitatively analyzed by the Engler distillation, octane number measuring machine and gas chromatography. The results show that the gasoline from the coal MTP device of Shenhua (Ningxia) has a high-octane number, a narrow distillation range, high aromatics and olefins content. The contents of aromatics and olefins are 48% and 25%, respectively. On the basis of the analysis results, several value-added exploitation plans are proposed, in which the plan involving the increase of propylene and ethylene is the preferred one. © 2016, China National Chemical Information Center. All right reserved. Source


Wang L.,Coal Chemical Company | Yong X.-J.,Coal Chemical Company | Zhang W.,Coal Chemical Company | Wu L.-J.,Coal Chemical Company | And 2 more authors.
Xiandai Huagong/Modern Chemical Industry | Year: 2015

The operating parameters of methanol recovery tower are compared and analyzed, such as feed quantity, circulating methanol, valve position, top pressure, bottom temperature and so on. The coke is characterized by GC-MS, XPS and roasting. It is confirmed that the overloaded operation and coking tray are the main reasons for the abnormal phenomena in methanol recovery tower, such as tower top pressure, difficulty in raising temperature for sensitive plate, COD content exceeded in wastewater, etc.. © 2015, China National Chemical Information Center. All right reserved. Source

Discover hidden collaborations