Congcong Niu

ORCID: 0000-0002-4582-122X
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About
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Research Areas
  • Catalysts for Methane Reforming
  • Catalytic Processes in Materials Science
  • Catalysis for Biomass Conversion
  • Hydraulic Fracturing and Reservoir Analysis
  • Process Optimization and Integration
  • Groundwater flow and contamination studies
  • Coal Properties and Utilization
  • Drilling and Well Engineering
  • Chemistry and Chemical Engineering
  • Innovative Microfluidic and Catalytic Techniques Innovation
  • Geomechanics and Mining Engineering
  • Field-Flow Fractionation Techniques
  • Microbial Metabolic Engineering and Bioproduction
  • Biofuel production and bioconversion
  • Methane Hydrates and Related Phenomena
  • Catalysis and Hydrodesulfurization Studies
  • Geoscience and Mining Technology
  • Electrocatalysts for Energy Conversion
  • Advanced Mathematical Modeling in Engineering
  • Gas Dynamics and Kinetic Theory
  • Rock Mechanics and Modeling

Institute of Coal Chemistry
2020-2022

University of Chinese Academy of Sciences
2020-2022

Sinopec (China)
2022

Sinopec Research Institute of Petroleum Processing
2022

Chinese Academy of Sciences
2011-2016

Institute of Mechanics
2011-2016

Tianjin University
2012-2013

State Key Laboratory of Chemical Engineering
2012

Beijing Technology and Business University
2011

Abstract The low effectiveness factor of catalyst pellet caused by high internal diffusion limitation is a common issue in fixed‐bed reactor. Nevertheless, hierarchical structured provides promising solution for the contradiction between reaction activity and efficiency large pellets. Herein, we studied effect pore structure parameters meso‐macroporous on Fischer–Tropsch synthesis performances through experiment scale reaction–diffusion simulation. simulation firstly elucidated reason...

10.1002/aic.17226 article EN AIChE Journal 2021-02-03

Abstract To simulate the centrifugal short‐path distillation process, both two phases and interfacial transport are taken into account simultaneously for first time. A new computational fluid dynamics model based on volume‐of‐fluid species methods is built up to analyze detailed flow transfer characteristics. binary system with dibutyl phthalate‐dibutyl sebacate (DBP‐DBS) used as an example investigation numerical experimental methods. The residence time effects of operating parameters such...

10.1002/ceat.201200091 article EN Chemical Engineering & Technology 2013-04-24

The threshold pressure gradient and formation stress-sensitive effect as the two prominent physical phenomena in development of a low-permeable reservoir are both considered here for building new coupled moving boundary model radial flow porous medium. Moreover, wellbore storage skin incorporated into inner conditions model. It is known that has strong nonlinearity. A coordinate transformation based fully implicit finite difference method adopted to obtain its numerical solutions. involved...

10.1088/1674-1056/25/2/024701 article EN Chinese Physics B 2016-02-01

Abstract A simple and effective method to modify Co/Al 2 O 3 catalyst improve the catalytic performance in Fischer‐Tropsch synthesis reaction is described. It found that electron density on cobalt surface increases via donation from dopant Ba CN species, leading an enhanced C 5 + selectivity o/p ratio. However, presence of crystalline size while introduction species leads formation smaller nanoparticles greatly their dispersion, thus resulting a different distribution heavy hydrocarbon...

10.1002/cctc.202001512 article EN ChemCatChem 2020-12-15

The low effectiveness factor of catalyst pellet caused by high internal diffusion limitation is a common issue in fixed-bed reactor. Nevertheless, hierarchical structured provides promising solution for the contradiction between reaction activity and efficiency large pellets. Herein, we studied effect pore structure parameters meso-macroporous on Fischer-Tropsch synthesis performances through experiment scale reaction-diffusion simulation. simulation firstly elucidated reason significant...

10.22541/au.160010742.28832626 preprint EN Authorea (Authorea) 2020-09-14

The non-Darcy seepage flow in low-permeable coalbed and the strong adsorption of methane are two key characteristics process development China. Based on these concerns, a model unsteady with moving boundary is built, which incorporates both existence threshold pressure gradient stable unstable simultaneously. Moreover, effects wellbore storage skin effect considered, can be incorporated inner conditions. Due to nonlinearity complexity boundary, verified numerical method spatial coordinate...

10.1016/j.proeng.2015.11.294 article EN Procedia Engineering 2015-01-01

Based on the characteristics of fractures in naturally fractured reservoir and discrete-fracture model, a fracture network numerical well test model was developed, which incorporated explicitly spatial domain. In two-dimensional problems, were represented as one-dimensional line element matrix space discretized into linear triangular elements. Bottom hole pressure response curves field obtained by solving equations with finite-element method. Through analyses bottom fluid flow field, seven...

10.1016/j.proeng.2015.11.293 article EN Procedia Engineering 2015-01-01

The significant feature of coalbed in China is the low permeability. A new unsteady seepage flow model developed for permeability by considering startup pressure gradient and methane desorption effect. Since complexity problem, a method which we call it "L‐FVM" developed, based on comparing normal numerical calculation methods comprehension research FVM. results show that L‐FVM has same precission but higher calculating velocity than This result very important monitoring area drawdown engineering

10.1063/1.3651987 article EN AIP conference proceedings 2011-01-01
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