Low-shear anti-scaling multi-phase mixing unit for high-viscosity media

Abstract

The invention discloses a novel low-shear anti-scale multi-phase mixing device applicable to high-viscosity mediums. The device comprises a round tube shell passage (5) and is characterized in that a plurality of eddy flow mixing units (6) are arranged inside the round tube shell passage (5) along the axial direction, and each two adjacent eddy flow mixing units (6) are staggered from each other at an angle of 90 degrees. The device disclosed by the invention can be used for fully mixing liquids, liquids with gases, liquids with solids and gases in general, especially is applicable to uniform mixing of high-viscosity multi-element mediums under a complicated condition, and can be applied to different flow types (such as laminar flow, transition flow and turbulent flow) within a quite wide viscosity range. The device disclosed by the invention is used for effectively solving the problems of scale formation, mechanical shearing, chemical degradation, uneven mixing and the like of a polymer mother solution, a ternary mother solution and a multi-element solution during mixed injection in tertiary oil recovery of an oil field, and has the technical characteristics of simple structure, uniform mixing, low shear, chemical degradation resistance, low probability of scale formation, easiness in maintenance and the like.

Description

technical field [0001] The invention relates to a low-shear anti-scaling multi-phase mixing device suitable for high-viscosity medium, suitable for mixing, emulsifying, neutralizing, absorbing, extracting, liquid-liquid, liquid-gas, liquid-solid, gas-gas, Processes such as reaction and enhanced heat transfer can be applied in different flow patterns (laminar flow, transition flow, turbulent flow) within a wide viscosity range, and can be applied in batch operation and continuous operation. Background technique [0002] At present, most of the existing static mixers simply adopt the spin-out static mixing method. Although the structure is simple, the resistance is small, and the adaptability is wide, the fluid mixing is insufficient and the mixing efficiency is low. Especially in the tertiary oil recovery process of the oil field, a static mixer is required, which mixes the mother liquor of polyacrylamide and oilfield produced water according to the required ratio to form the...

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Problems solved by technology

[0003] The invention provides a low-shear anti-scaling multi-phase mixing device suitable for high-viscosity media, in order to solve the problem that the mechanical shear degradation of polymers in the prior art is very large, and the degree of PAM solution after shearing is greatly reduced , the oil displacement effect in the downhole oil layer is obviously reduced, which seriously affects the problem of oil field tertiary oil displacement oil production capacity

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