Method and equipment for oil-water separation

Abstract

This is a new method and equipment for oil-water separation. This invention is based on the fundamental principle that the magnetic force which the electrified seawater suffers from the perpendicular magnetic field is FMHD=Ií‡B. According to this principle, each of the electrified seawater micelles in the oil-seawater mixture is extruded downwards as a result of the downward magnetic force after they enter into the interaction region between the electric and magnetic fields in the electromagnetic fluid separation passage. The buoyancy of the oil droplet in the seawater is of the same magnitude but in opposite directions, so the oil droplets float upward and assemble in the upper layer of the seawater. Consequently the oil and water are separated into two layers and depart from each other at the vent of the separation passage. There are two constitutional modes for the equipment that applies this invention: (1) solenoid superconductive magnet, tubular electromagnetic fluid separation passage and built-in passage tube parallel electrode pair; (2) saddle-polar superconductive magnet, tubular electromagnetic fluid separation passage and built-in passage tube annular electrode pair. Under the effect of magnetic force in the designed working condition of this invention, the rising velocity of oil-water separation can be accelerated by 1~2 order-of-magnitude in contrast to the result of the specific gravity difference between oil and water.

Description

technical field The present invention relates to an oil-water separation method and device for oily seawater, in particular to an oil-water separation method and device utilizing electromagnetic fluid power. Background technique The operation of seagoing ships and marine oil spill accidents produce a large amount of oily cabin water and oily seawater, which may cause serious pollution to the environment. Regardless of the needs of environmental protection and energy saving, it is expected to separate and recycle oil and water quickly and efficiently. One of the existing oil-water separation methods is the magnetic separation method, which spreads lipophilic porous magnetic material particles into the oily seawater, absorbs the oily dirt mixed in the seawater, and then collects the magnetic material particles to separate the oily dirt from the seawater; the second method It spreads the oil dispersant to the oil slick on the sea surface. Due to the function of the oil disper...

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