Parameter optimization method for double-field coupling dehydrator

A method of parameter optimization for a double-field coupling dehydrator, the double-field coupling dehydrator comprising an overflow pipe, a plurality of inlets, a straight pipe, a first truncated cone, a second truncated cone, and an underflow pipe;

• the overflow pipe and the plurality of inlets being provided on the straight pipe;
• the inlets being arranged on an outer wall of the straight pipe and are tangential to a wall of the straight pipe so as to allow a liquid to enter the straight pipe at a certain speed and rotate along an inner wall of the straight pipe;
• the overflow pipe being arranged along an axis of the straight pipe;
• a high-voltage electric field being arranged between an outer wall of the overflow pipe in the straight pipe and the inner wall of the straight pipe;
• and the straight pipe, the first truncated cone, the second truncated cone and the underflow pipe being connected sequentially;
• a joint between the first truncated cone and the second truncated cone having a nominal diameter D of 20-22 mm;
• the first truncated cone having a first cone angle β of 20°-22°, and the second truncated cone having a second cone angle α of 5°-6°;
• the method comprising:
• determining parameters to be optimized;
• simulating the double-field coupling dehydrator according to determined parameters individually;
• determining an optimal range of individual parameters according to simulation results;
• determining combinations of optimized parameters;
• simulating the double-field coupling dehydrator according to determined parameter combinations individually;
• obtaining separation efficiencies of the double-field coupling dehydrator under individual parameter combinations within the optimal range;
• determining an optimal parameter combination according to the separation efficiencies of the double-field coupling dehydrator;
• wherein a multiple quadratic regression model of functional relationships between the optimized parameter combinations and the separation efficiencies is established and calculated according to the following equations:
• Edw=266.26−8.798x112.43x2−1.197x3+0.799x1x2+0.528x1x3+0.166x2x3+0.101x22−0.12x32;
• Edo=1716.68+11.68x1−29.9x2−126.5x3+3.11x1x2−8.13x1x3−2.28x2x3+7.72x12+1.43x22+5.22x32;
• wherein x1, x2 and x3 correspond to α, β and D, respectively;
• Edw is dehydration rate %;
• and Edo is deoiling rate %;
• and an optimal condition is that the dehydration rate and deoiling rate of the double-field coupling dehydrator are maximal at the same time;
• and
• obtaining the optimal parameter combination.