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Research on External Flow Field of Pressure Swirling Nozzles under Different Wind Speeds

Author: ZhangHaiPing
Tutor: ChouXingQi
School: China University of Petroleum
Course: Chemical Process Equipment
Keywords: Coke Quencher Swirl atomizing nozzle Swirl number Similar guidelines
CLC: TQ221
Type: Master's thesis
Year: 2009
Downloads: 129
Quote: 4
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Abstract


Papers for a petrochemical company olefin plant pyrolysis furnace device CNPC quench coking issues . To deepen the understanding of the in atomization and flow of a quench vessel ( spray tower ) , so that the nozzle design optimization greater degree of blindness and workload rely on rational calculation , reduce the experimental thesis based on the similarity theory is derived and calculated the model nozzle experiments required speed , flow, pressure , and other operating parameters . A simplified experimental spray tower model combined with the previous four - runner pressure swirl nozzle structure quench internal flow field is simulated , and the following conclusions : the the nozzle installation process cyclone consistency of the direction of flow field uniformity is particularly important ; distribution for the full contact of the gas-liquid mass transfer and heat transfer , should avoid the spray field is the vapor blown open , the wind speed and nozzle flow rate to adapt . Derivation based on the knowledge of the evaporation heat transfer and geometry design of the nozzle to the desired particle size , penetration depth , the minimum spray angle formula , based on the swirl number theory in the design of the nozzle structure of the spray cone angle design computational validation. APV system , the LS- 2000 and high-speed video camera , the nozzle atomization and flow characteristics of the cold nozzle geometry parameters , operating parameters , such as multi-factor experimental study , summed up the optimum operating parameters and draw traffic SMD, fog taper relationship between the concentration and the nozzle geometry parameters and pressure . The theoretical swirl degree to fit the experimental data ? * Actual the atomization cone angle β tangent of the relationship . Experimental data has important guiding significance to the swirl nozzle quench the design and field applications . Field experiments the swirl nozzle developed based on experimental and simulation results , good atomization effect .

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CLC: > Industrial Technology > Chemical Industry > Basic Organic Chemistry Industry > The production of aliphatic compounds ( acyclic compounds) > Aliphatic hydrocarbons
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