Xingang Li
Tianjin University
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Featured researches published by Xingang Li.
Petroleum Science and Technology | 2011
Xingang Li; Li G; Z. Xu; Hong Sui
Abstract Based on the paraffins, olefins, naphthenes, aromatics (PONA) composition of crude light gasoline, crude heavy gasoline, stabilized gasoline, and wet gas of a pilot plant fluid catalytic cracking (FCC) unit, it was found that the root cause of high gasoline olefin content and low propylene yield was low C5 and C6 olefin content of crude light gasoline. A new design for the main fractionater and absorber–stripper–stabilizer was presented to obtain stabilized light gasoline that contains more C5 and C6 olefins recracked in the secondary riser. Industrial studies on the revamped unit showed that gasoline olefin content was decreased markedly, though research octane number (RON) was preserved. In addition, propylene yield was raised to a higher level and unit energy consumption (or operating cost) was not increased.
Journal of Engineering Thermophysics | 2017
Hong Sui; J. Wu; Lin He; Xingang Li
In this study, the organic Rankine cycle (ORC) is applied to be integrated into the fluid catalytic cracking (FCC) absorption-stabilization system to extract and convert the low-grade process heat to electricity. This newly integrated system is simulated by the Aspen Plus software. For the simulation, eleven different dry and isentropic working fluids are selected to investigate the energy conversion performance of the incorporated ORC system. It is found that, the performance depends highly on the operational parameters, such as mass flow rate and the evaporation pressure of the working fluids, outlet temperature of the process stream. After optimization, the working fluids R124 and R227ea are determined to be the best candidates due to their highest output net work in HCT (high critical temperature) and LCT (low critical temperature) working fluids, respectively. A further optimization has been conducted based on the economic evaluations (i.e., electricity production cost (EPC) and total annual profit (TAP)). Results show that, for the HCT working fluids, the use of working fluid of R245fa allows the EPC to be the lowest, while the application of R124 obtains the highest TAP. For the LCT working fluids, R227ea is the best choice due to its lowest EPC and highest TAP.
Petroleum Science and Technology | 2015
Xingang Li; J. Hou; Hong Sui
The basic properties of the Shanbei crude oils and its mixed were studied first. Then, a hybrid coefficient function for the viscosity of the mixed oils was introduced. With these, an optimization model of the proportion for the crude oils blending was established and solved. An applicable proportion for six Shanbei crude oils’ blending was given. With the proportion, one mixed oil was prepared and distilled. Fouling and coking are discussed with the simulation in the distillation to assist the optimization. The experiment results showed that the model was valid for the oils blending.
Chemical Society Reviews | 2015
Lin He; Feng Lin; Xingang Li; Hong Sui; Zhenghe Xu
Chemical Engineering Science | 2009
Wen-Hui Zhang; Xingang Li
Chemical Engineering Science | 2010
Licheng Wang; Yifei Zhang; Xingang Li; Yi Zhang
Chemical Engineering Science | 2013
Xin Gao; Xingang Li; Jinsong Zhang; Jiayan Sun; Hong Li
Chemical Engineering Science | 2005
Peng Bai; Chao Hua; Xingang Li; Kuotsung Yu
Chemical Engineering Science | 2013
Hui Zhang; Xingang Li; Xin Gao; Hong Li
Journal of environmental chemical engineering | 2016
Lin He; Feng Lin; Xingang Li; Zhenghe Xu; Hong Sui