Patent ID: 11865500
Assignee: SOUTHWEST PETROLEUM UNIVERSITY
Field: Chemical engineering (Chemistry)
Classification: CPC B  E | IPC B  E

Claim 6:
7. A method of dissolving polymers using the instant dissolving device according to claim 1, comprising following steps:
firstly, start motors of the device to drive the mass transfer rings of the stretching repetition unit, the cleaning unit and the mass transfer unit to rotate; pump in a mixture of dry polymer powder and water from the liquid inlet; undissolved polymer mixed solution enters an upper part of the stretching repetition unit from the liquid inlet for stretching; the polymer solution passes through the stretching repetition unit and enters the upper fixed fluted disc and the movable fluted disc from the plurality of through holes on the upper fixed fluted disc, and then flows from the movable fluted disc into the lower fixed fluted disc; due to the short tooth structure of the upper fixed fluted disc, the movable fluted disc and the lower fixed fluted disc, the short tooth structure of the movable fluted disc and the lower fixed fluted disc is in a tooth shape, and the stretching repetition unit is repeatedly arranged in series from top to bottom; an engagement gap between the upper fixed fluted disc and the movable fluted disc and between the movable fluted disc and the lower fixed fluted disc in each of the stretching repetition unit is gradually reduced from the top to bottom, the movable fluted disc runs at a certain speed, swelling polymer particles are ground by the short tooth structure, then sheared again by a tangential force generated in the stretching repetition unit under a centrifugal force, and centrifuged to the mass transfer rings of the mass transfer unit:
the mass transfer rings are set in combination with the stretching repetition unit, the polymer solution is treated by the stretching repetition unit and then forced to pass through the mass transfer rings, penetrate the porous material of the mass transfer rings, and flow out the mass transfer rings into the innermost ring that is set apart; the polymer solution passes through the porous material set on the innermost ring under the action of centrifugation; due to the reverse rotation in a spacing cavity between the innermost ring and a second ring, the polymer is forcibly pulled back and forth, then comes to and penetrate the second ring under the action of high gravity; the polymer solution is forcibly pulled back and forth between second and third mass transfer rings to make polymer molecular chain segments extended rapidly and transfer out from the third mass transfer ring, until it passes through all the mass transfer rings; liquid comes from a side of the mass transfer ring, and discharged from the device to form a dissolved uniform polymer solution.