油液黏度对脉冲电场最佳破乳频率的影响

摘要

通过建立油中乳胶粒子在脉冲电场作用下的非线性振动动力学模型,研究了粒子非线性参激共振及其条件,得出脉冲电场最佳破乳频率关系式.结果表明,油中乳胶粒子最佳破乳频率及其共振振幅随油液黏度的增大而减小.利用模型得出的乳胶粒子振动幅频特性关系在理论上解释了油液黏度对最佳破乳频率产生的影响,以及最佳破乳频率偏离粒子振动固有频率的成因.%By establishing the vibration kinetics model of latex particle in oil under pulse electric field, the characteristics and conditions of latex particle's parametrically excited nonlinear vibration were studied. And then, the optimal demulsion frequency of latex particle was obtained under pulse electric field. In experiment, results showed that the value of optimal demulsion frequency and swing of resonance particle decreased with the increase of oil viscosity. In theory, swing-frequency characteristic relationship of vibrating particle obtained by model explained that oil viscosity could have effect on the optimal demulsion frequency and the reason that optimal demulsion frequency deviated from natural frequency of particle vibration.