A5050929203- Risk and Safety Analysis
- High-Temperature Coating Behaviors
- Hydrogen embrittlement and corrosion behaviors in metals
- Nuclear Materials and Properties
- Petroleum Processing and Analysis
- Corrosion Behavior and Inhibition
- Fault Detection and Control Systems
- Concrete Corrosion and Durability
- Hydraulic and Pneumatic Systems
- Structural Integrity and Reliability Analysis
- High Entropy Alloys Studies
- Cavitation Phenomena in Pumps
- Diamond and Carbon-based Materials Research
- Erosion and Abrasive Machining
- Mechanical Failure Analysis and Simulation
- Coal Combustion and Slurry Processing
- Catalytic Processes in Materials Science
- Thermochemical Biomass Conversion Processes
- Metal and Thin Film Mechanics
- Particle Dynamics in Fluid Flows
- Fatigue and fracture mechanics
- Process Optimization and Integration
- Advanced Surface Polishing Techniques
- Advanced machining processes and optimization
- Reliability and Maintenance Optimization
China Special Equipment Inspection and Research Institute
2021-2024
North China Electric Power University
2014-2015
The scientific and reasonable maintenance strategy is critical to ensure the continuous operation of stationary equipment in petrochemical industry; both risk-based inspection (RBI) integrity operating windows (IOWs) are effective for maintenance. In traditional static RBI, risk assumed remain constant whole period, latest variations medium process parameters not fed back into calculation. Thus, value may be overestimated or underestimated, leading unexpected failures excessive inspection....
Stripper tower of coal gasification unit easily occurs severe corrosion, which may induce the damage relative equipment and leakage toxic gas. Introducing organic corrosion inhibitors is an effective promising way for this system. In article, effects medium concentration on behavior in coal-based syngas produced water are firstly investigated with X-ray diffraction (XRD) scanning electron microscopy (SEM). addition, protection performance including imidazoline (ID), amide (IDA), mannich base...
Abstract A large number of pressure vessels and pipelines in China’s refining chemical industry will soon enter the extended service period (more than 20 years). It is estimated that by 2025, growth rate increase from current 10 thousand units/year to 100 units/year, thus safety these aging equipment focus attention. necessary accurately evaluate early warn failure risk equipment, especially considering complex influences, high uncertainty suddenness long-term service. On other hand,...
Severe erosion phenomena often occur in industrial polycrystalline silicon units, leading to hydrogen leakage accidents and affecting long-term operation. It is favorable use a computational fluid dynamics (CFD) simulation with the dense discrete phase model (DDPM) sub-grid energy-minimization multi-scale (EMMS) drag improve prediction accuracy of complex multiphase connecting pipe an unit. Furthermore, effect droplet specularity coefficient on boundary conditions thoroughly considered. The...
Abstract As critical pressure vessel equipment, hydrogenation reactors are widely used in the petrochemical industry and coal industry. Temper embrittlement, especially under long-term service conditions, is most important damage mode for reactors. Currently, temper embrittlement API 579 (American) GB/T 36669.1 standards (China) correlated with sensitive X J factors based on steeping-cooling experimental data. Obviously, including operation pressure, temperature time have significant effects...
Abstract Heavier and poorer crude oils often produce more reaction coke lower yield of target product such as gasoline LPG in a commercial FCC riser, then affect the safety running period reactor. Our previous cold-model simulation indicated that modification from conventionally upward feed injection scheme to downward one improves oil-catalyst mixing. This work aims improve oil cracking avoid coking process with scheme, wherein jets counter-currently impact catalyst particle flow riser...
Abstract Crude distillation unit (CDU) generally exists severe corrosion. Risk-based inspection (RBI) technology can effectively assess risk of stationary equipment in petrochemical industry. Meanwhile, integrity operating window (IOW) control by establishing standard and critical limits. Limited data integrated analysis the complexity interfaces connecting different systems, current assessment complete sets mainly adopted static method. API 584-2021describes IOW parameters crude unit, but...
Abstract Multistage pump of lean amine liquid is crucial rotating equipment in an industrial refining catalytic reforming unit. Cavitation often causes the damage impeller to affect long-term safe operation The formation cavitation on 3D simulated by using Zwart-Gerber-Belamri model accord with actual position under operating condition. discrepancies range between different volume flux (400 800 m3/s. pressure (0.4 2.0 MPa) and vapor (0.05 0.5 terms running conditions every stage are...
Abstract Severe fixed Coke in the industrial residue fluid catalytic cracking (RFCC) riser reactor often results reduction of product yield and unplanned unit shutdown. It is difficult to simultaneously depict physical chemical formation coke near wall due no approach coking model. In this paper, complex gas-solid-liquid three phase flow, mixing reaction are agreement with data by 3D reactive simulation multiphase Eulerian granular model coupling vaporization empirical correlation...
Abstract The condensate involving HS-, CO32−, Cl− and NH4+ usually causes severe corrosion of 20 steel in stripping process industrial coal gasification unit. can easily lead to failure pipe fittings vessels, result economic losses personal injury. To protect unit against corrosion, five inhibitors including imidazoline, imidazoline amide, mannich base quaternary ammonium salt, pyridine, sodium molybdate are investigated with experiment linear polarization curve, electrochemical impedance...