CAJ | 학술논문

通过电感耦合测试技术考察管径、管长、流量、浓度等因素对硫酸钡出口浓度的影响,结合差压法和哈根-泊肃叶公式计算出毛细管内流速变化,给出模拟水源在毛细管内硫酸钡结垢现象与沉积动力学参数。通过物料衡算建立硫酸钡沉积动力学参数,且引入管内流动速率增强系数。结果表明：在实验范围内,流动速率增强系数随着管长和流量的增加而线性增加,而沉积动力学系数随着管径、管长和流量的增加呈现非线性增加的趋势,同时入口浓度对流动速率增强系数和沉积动力学参数几乎没有影响；管内流动速率增强系数和沉积动力学系数与实验结果吻合较好,误差小于(±20)%；管内进口处硫酸钡晶体较小,平均粒径10~20μm,出口段沉积增长像树叶状或菜叶叠加状,晶体颗粒较大,平均粒径50~100μm。
통과전감우합측시기술고찰관경、관장、류량、농도등인소대류산패출구농도적영향,결합차압법화합근-박숙협공식계산출모세관내류속변화,급출모의수원재모세관내류산패결구현상여침적동역학삼수。통과물료형산건립류산패침적동역학삼수,차인입관내류동속솔증강계수。결과표명：재실험범위내,류동속솔증강계수수착관장화류량적증가이선성증가,이침적동역학계수수착관경、관장화류량적증가정현비선성증가적추세,동시입구농도대류동속솔증강계수화침적동역학삼수궤호몰유영향；관내류동속솔증강계수화침적동역학계수여실험결과문합교호,오차소우(±20)%；관내진구처류산패정체교소,평균립경10~20μm,출구단침적증장상수협상혹채협첩가상,정체과립교대,평균립경50~100μm。
The effects of diameter, length, flow, concentration on the barium sulphate ( BaSO4 ) concentration at the capillary outlet were investigated through the inductively coupled plasma mass spectrometry ( ICP-MS) . And the flow velocity in the capillary was calculated using the differential pressure method and the Hagen-Poiseuille equation, through which the scaling phenomenon and the deposition kinetics of BaSO4 in the capillary tube were presented. Meanwhile, the deposition kinetics of BaSO4 was established using mass balance, and the flow rate enhancing coefficient was introduced. The experimental results show that the velocity enhancement factor linearly increases with the increase of the tube length and flow rate. However, the deposition kinetic coefficient nonlinearly increases with the increase of tube diameter, length and flow rate. In addition, the concentration at the inlet has slight influence on the flow rate enhancement factor and the deposition kinetic coefficient. The calculated deposition kinetic coefficient and flow rate enhancement factor are fitted well with the experimental data, and the error is within ( ±20)%. Also it is found that the BaSO4 crystal in the inlet is small with an average diameter of 10-20μm. The deposition crystals in the outlet grow like leaf shaped, or leaves superposed with the crystal particle size of 50-100 μm.