Device and method for treating oil-containing sewage of oil field by adopting plant filter materials

A plant filter material and oily sewage technology, applied in the direction of grease/oily substance/suspton removal device, separation method, chemical instrument and method, etc., can solve the problem of low efficiency, achieve the effect of protecting the environment and saving energy

Inactive Publication Date: 2011-05-18
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an oilfield oily sewage treatment device and method using plant filter material, which can improve the efficiency of environmental protection treatment of oilfield sewage, overcome the problem of low efficiency of traditional filtration technology, and make up for the shortcomings of the existing technology

Method used

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  • Device and method for treating oil-containing sewage of oil field by adopting plant filter materials
  • Device and method for treating oil-containing sewage of oil field by adopting plant filter materials
  • Device and method for treating oil-containing sewage of oil field by adopting plant filter materials

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Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1 uses reed straw as the raw material of plant filter material

[0027] 1) Cleaning step: first, the reed stalks of Poaceae are cleaned with water; the cleaning refers to washing away impurities such as silt and dirt on the surface of raw materials with water, otherwise the flow resistance during filtration will be increased and energy will be consumed;

[0028] 2) Drying step: then drying the cleaned reeds in the sun so that the moisture content in the reed stalks does not exceed 4%;

[0029] 3) Crushing and sieving steps: crush the dried reed straw with a pulverizer to obtain particles of different sizes and diameters, and then sieve with 80-mesh and 28-mesh standard sampling sieves to obtain reeds of 200 μm-600 μm straw filter.

Embodiment 2

[0030] Embodiment 2 uses wheat straw as the raw material of plant filter material

[0031] 1) Cleaning step: firstly, the wheat straw is cleaned with water;

[0032] 2) Drying step: then exposing the cleaned wheat stalks to the sun so that the moisture content of the wheat stalks does not exceed 4%;

[0033] 3) Grinding and sieving steps: Grinding the dried wheat straw with a pulverizer to obtain particles of different sizes and diameters, and then sieving with 80-mesh and 28-mesh standard sampling sieves to obtain 200 μm-600 μm wheat straw straw filter.

[0034] Straws of other Gramineae can also be used to prepare plant filter materials, for example, rice straw and corn stalks can be made into rice straw filter materials and corn stalk filter materials respectively.

Embodiment 3

[0035] Embodiment 3 uses wood powder as the raw material of plant filter material

[0036] 1) Cleaning step: firstly wash the Chinese fir powder with water;

[0037] 2) Drying step: drying the cleaned Chinese fir powder in an oven at 70°C so that the water content in the Chinese fir powder does not exceed 3%;

[0038] 3) Crushing and sieving steps: crush the dried fir powder with a pulverizer to obtain particles of different sizes and diameters, and then sieve with 80-mesh and 28-mesh standard sample sieves to obtain 200 μm-600 μm Chinese fir powder filter.

[0039] Other wood powders can also be used as plant filter materials, for example: poplar wood powder, pine wood powder, etc. are made into poplar wood powder filter material and pine wood powder filter material.

[0040] 2. The prepared plant filter material is used in the device for oily sewage treatment in oil fields

[0041] Such as figure 1 A device for using the plant filter material prepared above for the treat...

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Abstract

The invention relates to a method for preparing plant filter materials for treating oil-containing sewage of an oil field, a device for treating the oil-containing sewage of the oil field by using the plant filter materials and a corresponding using method. The device is characterized in that: not less than two kinds of plant filter materials are filled into a cylinder layer by layer, wherein the filter material with good oil absorption is filled to the lower part of the cylinder, and the filter material with poor oil absorption is filled to the upper part of the cylinder; and after the sewage passes through the filter materials, oil drops are continually intercepted and adsorbed so as to realize effective filtration. After the filtration is completed, the degradable plant filter materials are extruded to recycle oil and water and then can be directly used as high energy fuels supplied to a crude oil heating furnace in situ, and operations such as burying and the like are not needed, so agriculture and forestry wastes are changed into valuable, the environment is protected, and the energy is saved. The invention solves the problems that the total effect of filter-backwashing-filter cycle of the traditional filter materials is poor, the utilization rate of a filter bed is low and the recovered water of the oil field is difficult to reach the standard for reinjection.

Description

technical field [0001] The invention relates to a device and method for treating oily sewage in oilfields using plant filter materials, that is, a device for filtering oily sewage using plant filter materials and a preparation method for the filter material, mainly used for filtering treatment of oilfield produced water and oily sewage in other industrial fields deal with. Background technique [0002] At present, most oilfields in China are exploited by water injection. With the prolongation of the exploitation time, the water content of oilfield production fluid increases rapidly. Therefore, effective treatment of this part of oily sewage and reinjection into the formation or discharge is crucial to ensuring the reliability of the oilfield. Sustainable development, saving water resources and protecting the environment are all of great significance. At the same time, the emergence of low-permeability oil fields and increasingly stringent water injection requirements make s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022C02F1/40
Inventor 何利民王鑫吕宇玲罗小明崔月红
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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