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Yan G.-F.,Shenhua Baotou Coal Chemical Co.
Xiandai Huagong/Modern Chemical Industry | Year: 2012

The problems ocurred during trial operation of a 1800 kt/a coal-to-methanol plant are discussed. The countermeasures are put forward. Most of them had been carried out and proved efficient. Now the plant is running steady. Source


Shi B.,China University of Petroleum - East China | Cheng W.,China University of Petroleum - East China | Cheng W.,Binzhou Vocational College | Li Z.,China University of Petroleum - East China | Li Z.,Shenhua Baotou Coal Chemical Co.
Shiyou Huagong Gaodeng Xuexiao Xuebao/Journal of Petrochemical Universities | Year: 2015

Nickel-based supported catalysts on γ-Al2O3 or SiO2 from Ni(NO3)2, NiCl2 and NiSO4 were prepared by NaBH4 reduction at low temperature. The effect of supports, nickel source, loading and reduction method on the catalytic performance of phenol hydrogenation was investigated. Among the three nickel salts, NiCl2 was the best in NaBH4 reduction system. It was shown that in NaBH4 reduction system the support γ-Al2O3 displayed better than SiO2. The main products of phenol hydrogenation were cyclohexanol and cyclohexanone, and the selectivity of cyclohexanol was higher on nickel supported catalysts. When the ratio of n(B)/n(Ni) was 3, the catalytic conversion of phenol hydrogenation was the highest. However, the nickel supported catalysts prepared by NaBH4 reduction were vulnerable in high-temperature resistance. ©, 2015, Fushun Petroleum Institute. All right reserved. Source


Tang Y.,Shenhua Baotou Coal Chemical Co. | Yu J.-L.,Shenhua Baotou Coal Chemical Co. | Wang Y.-H.,Shenhua Baotou Coal Chemical Co. | Ren H.-J.,China Shenhua Coal to Liquid and Chemical Beijing Engineering Company
Xiandai Huagong/Modern Chemical Industry | Year: 2015

The use of megaton methanol synthesis technology introduced from abroad is described. The existing problems such as local over-temperature, rapid decline of catalyst activity and low single-pass conversion during the operation of large-scale radial flow methanol synthesis reactor are analyzed. Through technological innovation and process optimization, it is promising to develop the technology for large-scale radial flow methanol synthesis reactor with independent intellectual property right, which can improve the performance of the methanol synthesis reactor effectively. ©, 2015, China National Chemical Information Center. All right reserved. Source


Li J.,China University of Petroleum - Beijing | Wang D.,China University of Petroleum - Beijing | Guo X.,China University of Petroleum - Beijing | Liu A.,China University of Petroleum - Beijing | And 4 more authors.
Shiyou Huagong Gaodeng Xuexiao Xuebao/Journal of Petrochemical Universities | Year: 2015

Process simulation software Aspen HYSYS was used to establish British DAVY series-parallel methanol synthesis upon steady state process in this study. A concept of equilibrium temperature interval was used to show the distance to equilibrium state in the model of equilibrium reactor. According to the contrast results of influence of exhausted gas positions on inlet gas and outlet gas mole fraction of methanol syntheses reactors, mass flow of crude methanol, mass fraction of crude methanol and recycle gas mass flow, different exhausted gas positions were proposed. Mass flow of recycle gas could be reduced at a lower value with this new exhausted gas position, which could widen the operation flexibility of methanol synthesis process. It could play a direct role in the actual production as well as design of following new process. ©, 2015, Fushun Petroleum Institute. All right reserved. Source

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