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Revolving bed device and method for quickly mixing and dissolving polymers

A mixed-dissolution and rotating bed technology, applied in the fields of polymer dispersion, curing production, and dissolution, can solve the problems of uneven axial distribution of liquids, reduced dissolution efficiency, etc. Effect

Active Publication Date: 2013-11-27
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the rotors of other layers except the uppermost layer, the liquid has no pump pressure (due to the compact structure, it is difficult for the multi-stage vertical high-gravity rotating bed to have space to install the pumping system for other rotors except the uppermost rotor), The axial distribution of the liquid in the rotor is uneven, which will greatly reduce the dissolution efficiency

Method used

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  • Revolving bed device and method for quickly mixing and dissolving polymers
  • Revolving bed device and method for quickly mixing and dissolving polymers
  • Revolving bed device and method for quickly mixing and dissolving polymers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Weigh 8284.48g of pure water and pour it into the suspension stirring tank 16, turn on the stirring paddle, and slowly add 45.52g of polyacrylamide dry powder with a molecular weight of 25 million (water content 8.59%) into the suspension stirring tank 16. Under the action of the stirring paddle, the dry powder is preliminarily dispersed in water to form a polymer suspension with a premixed concentration of 5000mg / L. Maintain the system temperature at room temperature, turn on the supergravity rotating bed, and simultaneously turn on the liquid inlet valve 22 and the external liquid inlet pump 17. Under the action of the pump, the polymer suspension enters the inner cavity of the supergravity rotating bed rotor through the delivery pipe 19 at a flow rate of 100L / h through the liquid inlet spray pipe, and the polymer solution is cut into fine particles under the high-speed shear of the filler. The liquid droplets, liquid film, and liquid filaments make the solution gradu...

Embodiment 2

[0040] Open the stirring tank stirring paddle, weigh 13266.63g of pure water and 58.25g of polyacrylamide dry powder (moisture content 8.59%) with a molecular weight of 19 million and add them to the suspension stirring tank 16 and the suspension stirring tank 18 respectively. Both are 4000mg / L suspension. Maintain the system temperature at room temperature, turn on the supergravity rotating bed, and simultaneously turn on the liquid inlet valve 22 and the external liquid inlet pump 17. Under the action of the pump, the polymer suspension passes through the delivery pipeline 19 at a flow rate of 150L / h and sprays through the inlet liquid The pipe enters the inner cavity of the supergravity rotating bed rotor, and after the shearing action of the second-stage rotor, the cooking liquid flows out from the liquid outlet and enters the cooking liquid storage tank 20 . After the polymer suspension in the suspension stirring tank 16 has been exported, close the liquid inlet valve 22,...

Embodiment 3

[0042] Pure water and polyacrylamide dry powder with a molecular weight of 19 million (moisture content 8.59%) are used as raw materials for preparation. Turn on the stirring blade in the stirring tank, and continuously add the two raw materials into the suspension stirring tank 16 according to the mass ratio of pure water to dry powder of 151.35:1, and form a polymer suspension with a polymer concentration of 6000 mg / L. Maintain the system temperature at room temperature, turn on the supergravity rotating bed, and simultaneously turn on the liquid inlet valve 22 and the external liquid inlet pump 17. The polymer suspension enters the inner cavity of the supergravity rotating bed rotor through the delivery pipe 19 at a flow rate of 80 L / h through the liquid inlet spray pipe. After the liquid is thrown out from the outer edge of the first-stage rotor, it is collected by the liquid storage tank, and the ripening liquid flows out from the liquid outlet and enters the ripening liq...

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Abstract

The invention discloses a revolving bed device for quickly mixing and dissolving polymers. The revolving bed device comprises a motor, a coupling connected with an output shaft of the motor, a bearing pedestal fixedly connected with the coupling, a revolving bed housing fixedly connected with the bearing pedestal, and a sealing system, wherein a liquid inlet and a liquid outlet are formed in the revolving bed housing; at least two stages of rotors are arranged in the revolving bed housing; the liquid inlet is communicated with the inner edge of the rotors through liquid inlet spraying pipes; liquid storage cabins are correspondingly arranged below each stage of rotor; each stage of liquid storage cabin is communicated with an inlet end of a liquid inlet pump through a pipeline; an output end of the liquid inlet pump is communicated with the inner edge of the next stage of rotor through a spraying pipe; the liquid storage cabin below the last stage of rotor is connected with the liquid outlet; the sealing system is arranged between the last stage of rotor and the bearing pedestal. The revolving bed device has the advantages of short curing time, small occupied space, high efficiency and the like.

Description

technical field [0001] The invention relates to a rotating bed device and method for rapid mixing and dissolving of polymers, and is especially suitable for polymer dispersion, dissolution and aging production in occasions limited by space and load bearing (such as offshore oil production platforms). Background technique [0002] With the continuous exploitation of oilfields, the difficulty of oil recovery is getting bigger and bigger. In order to stabilize oil field production, after the first oil recovery relying on the oil field's own pressure and the second oil recovery of oil field water injection, the tertiary oil recovery technology ushered in a stage of vigorous development. Polymer flooding technology is an important popularization technology for tertiary oil recovery in oilfields. This technology uses the polymer dry powder of high molecular compounds and the solution after dissolving in water to increase the viscosity of water, and inject it into the formation to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F1/00B01F7/02
Inventor 赵宏陈建峰罗勇刘海涛初广文邹海魁
Owner BEIJING UNIV OF CHEM TECH
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