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Liquefaction and impurity separation of oxygen-bearing coal-bed methane

Qiuying LI, Yonglin JU, Li WANG,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 319-325 doi: 10.1007/s11708-010-0115-9

Abstract: Coal-bed methane (CBM) is a type of clean energy. However, most oxygen-bearing CBM have not yet to be utilized due to limited techniques, and when utilized, the discharged gas leads to resource wastage and environment pollution. In this paper, a liquefaction process is proposed and designed for the specified oxygen-bearing CBM obtained from the Daqing Qingshen gas field. The distillation column is employed to separate the oxygen and nitrogen components present in the CBM. HYSYS software is adopted to simulate the process, and the results reveal that the energy consumption of the whole liquefaction process is low. Moreover, oxygen and nitrogen are nearly removed completely, achieving a high-purity liquefied natural gas product with a high methane recovery rate. The applicability and safety of the liquefaction process are also analyzed. The simulation results can offer references for the separation of the oxygen component from CBM.

Keywords: coal bed methane     oxygen-bearing     liquefaction     distillation    

Digital design of a combine harvester using virtual prototyping

YAN Chuliang, LI Jie, ZHANG Shuming, YANG Fangfei

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2,   Pages 159-163 doi: 10.1007/s11465-007-0026-6

Abstract: The grain passed through the sieve easily after the optimization and reduced the loss rate and impurity

Keywords: excellent     assembly     impurity     harvester     vibration    

Effects of ionic impurities on crystallization of cobalamin

Baoli SHAO, Hui CHEN, Shuang WANG, Haijun WANG, Shenmin XU,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1,   Pages 70-74 doi: 10.1007/s11705-009-0293-3

Abstract: It is noted that impurity Mg has a more significant effect than Na in crystal growth of the whole crystallization

Keywords: cobalamin     impurity     particle     addition     technique    

Green process to recover magnesium chloride from residue solution of potassium chloride production plant

WANG Lin, HE Yunliang, WANG Yanfei, BAO Ying, WANG Jingkang

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 385-389 doi: 10.1007/s11705-008-0079-z

Abstract: The recovery process contains two steps: the previous impurity removal operation and the two-stage evaporation-coolingThe crystallized impurity carnallite obtained from the first step is recycled to the potassium chloride

Keywords: industrial production     chemical industrial     produced magnesium     chloride production     impurity carnallite    

Experiment and optimal design of a collection device for a residual plastic film baler

Qi NIU,Xuegeng CHEN,Chao JI,Jie WU

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 4,   Pages 347-354 doi: 10.15302/J-FASE-2015077

Abstract: the structure and working parameters for improving the collection efficiency of residual film and the impurityThe results show that the factors affecting the collection rate of residual film and the impurity ofMeanwhile, for the impurity, the importance of three factors are in the order, .was set at 1.6°, 45°, and 8°, respectively, the collection rate of residual film was 88.9% and the impurity

Keywords: residual film     collection device     collection rate of residual film     impurity of film package     optimization    

Investigation of solution chemistry to enable efficient lithium recovery from low-concentration lithium-containing wastewater

Chunlong Zhao, Mingming He, Hongbin Cao, Xiaohong Zheng, Wenfang Gao, Yong Sun, He Zhao, Dalong Liu, Yanling Zhang, Zhi Sun

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 639-650 doi: 10.1007/s11705-019-1806-3

Abstract: To achieve effective Li recycling, the features of impurity removal and the interactions among differentHowever, it is generally difficult to ensure highly efficient removal of impurity ions while retainingIn this study, the removal of typical impurity ions from LCW and the interactions between these species

Keywords: lithium-containing wastewater     lithium phosphate     precipitation     impurity ion    

Title Author Date Type Operation

Liquefaction and impurity separation of oxygen-bearing coal-bed methane

Qiuying LI, Yonglin JU, Li WANG,

Journal Article

Digital design of a combine harvester using virtual prototyping

YAN Chuliang, LI Jie, ZHANG Shuming, YANG Fangfei

Journal Article

Effects of ionic impurities on crystallization of cobalamin

Baoli SHAO, Hui CHEN, Shuang WANG, Haijun WANG, Shenmin XU,

Journal Article

Green process to recover magnesium chloride from residue solution of potassium chloride production plant

WANG Lin, HE Yunliang, WANG Yanfei, BAO Ying, WANG Jingkang

Journal Article

Experiment and optimal design of a collection device for a residual plastic film baler

Qi NIU,Xuegeng CHEN,Chao JI,Jie WU

Journal Article

Investigation of solution chemistry to enable efficient lithium recovery from low-concentration lithium-containing wastewater

Chunlong Zhao, Mingming He, Hongbin Cao, Xiaohong Zheng, Wenfang Gao, Yong Sun, He Zhao, Dalong Liu, Yanling Zhang, Zhi Sun

Journal Article