Aggregation sinking and emerging treatment device for oilfield produced waste water

A treatment device and coalescing air flotation technology, which is applied in flotation water/sewage treatment, flocculation/sedimentation water/sewage treatment, grease/oily substance/floating matter removal device, etc., which can solve the increased cost of produced water reinjection treatment , increase the viscosity of the oil-water interface film, and the low compliance rate of water injection water quality, etc., to achieve the effects of saving water treatment chemicals, enhancing the treatment effect, and high recycling value

Inactive Publication Date: 2009-03-25
SINOPEC PETROLEUM ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, with the deepening of tertiary oil recovery, the content of surfactants and other chemical agents in produced water has increased, resulting in more complex properties of produced water containing oil-displacing agents than conventional water flooding; The content of colloid, colloid and petroleum naphthenic acid is generally high, which increases the viscosity of the oil-water interface film and forms a stable o/w emulsion. The treatment effect of conventional process equipment is poor; and the tank body of the conventional process is large in size and occupies an area of Large, low equipment separation efficiency, long hydraulic retention time
Therefore, the conventional produced water treatment process can no longer meet the increasingly complex sewage water quality, resulting in increased cost of produced water reinjection treatment, and low compliance rate of injected water quality

Method used

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  • Aggregation sinking and emerging treatment device for oilfield produced waste water
  • Aggregation sinking and emerging treatment device for oilfield produced waste water
  • Aggregation sinking and emerging treatment device for oilfield produced waste water

Examples

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Example Embodiment

[0020] Example 1:

[0021] As shown in Figure 1, the present invention includes a tank body, water inlet section A, coalescing air flotation section B, dosing mixing reaction section C and air flotation sedimentation and slag removal section D, sewage through the water inlet pipe 1, inlet The water valve 2, the water inlet pump 3, the electronic flow meter 4 are pumped into the conical buffer hopper 5 through the water inlet pump. The sewage flows into the egg tray type coalescing packing layer 7 of the coalescing air flotation section B evenly from the liquid distribution wall 6, and the sewage Crude oil is coalesced by the filler to form oil droplets that float up. After passing through the filler layer, the crude oil is combined with the air bubbles released by the perforated cloth air pipe 8 and quickly rises to the water surface under the action of the air bubbles. In the other slop tank, the degreasing sewage flows from another liquid distribution wall through the overflow plat

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PUM

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Abstract

The invention relates to a conglomeration and flotation-sink treatment device for sewage produced in oil fields, which consists of a tank, a water inlet section A, a conglomeration and air-flotation section B, a drug mixed reaction section C and an air-flotation settling section D. The tank is designed into a rectangle shape, with top sealed; the water inlet section, the conglomeration and air-flotation section, the drug mixed reaction section and the air-flotation settling section are arranged in sequence from the left side to the right side of the tank; the water inlet section is communicated with the conglomeration and air-flotation section through a water distribution wall of the water inlet section; after the treatment by the conglomeration and air-flotation section, the sewage is communicated with a pipeline mixer of the drug mixed reaction section through a water pump, and then goes into a baffle reactor; after the treatment by the baffle reactor, the sewage is communicated with the air-flotation settling section via an inflow pipe of the air-flotation settling section; and the air-flotation settling section is divided into two chambers, namely, an air-flotation chamber and a sewage storage chamber treated in sequence by the conglomeration and air-flotation section, the drug mixed reaction section and the air-flotation settling section. After treated by the three sections, the sewage enters the sewage storage chamber through an overflow weir of the air-flotation settling section, and then goes to a sewage recycling system through a discharge valve. The conglomeration and flotation-sink treatment device for sewage produced in oil fields has the advantages of simple structure, convenient operation and high treatment efficiency.

Description

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Claims

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Application Information

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Owner SINOPEC PETROLEUM ENG DESIGN
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