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A preparation method of filter net filler, filter net and application thereof

A filter and filler technology, applied in the field of filter filler preparation, can solve the problems of fast corrosion of equipment, high energy consumption, low separation efficiency, etc., and achieve the effect of long service time and excellent corrosion resistance

Active Publication Date: 2017-07-18
淄博东森石油技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, oilfield production fluid contains a large amount of pressure injection water, and efficient oil-water separation has become one of the important means for oilfields to achieve energy saving and emission reduction. Oilfields often use cyclone separation for oil-water separation, but there are high energy consumption, rapid equipment corrosion, and separation efficiency. Inferior disadvantages
In addition, the process of crude oil extraction is also faced with the problem of sand control and sand filtration. The currently used stainless steel filter screen can only play the function of sand filtration and does not have the function of oil-water separation.

Method used

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  • A preparation method of filter net filler, filter net and application thereof
  • A preparation method of filter net filler, filter net and application thereof
  • A preparation method of filter net filler, filter net and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The carbon fiber filaments with a tensile force of 30T were made into fragments about 3 cm long, and the carbon fiber filaments were treated in concentrated nitric acid solution for 24 hours to form a layer containing hydroxyl groups. Fluoroorganosilane (5,5,6,6,7,7,8,8-octafluorodecylsilane, 250 mL of DMSO solution with a mass concentration of 5%) was mixed with small fragments of carbon fibers ( 100 g) was put into a flask, heated to 50° C., and stirred for 24 hours. Wash with DMSO and distilled water successively to remove excess organosilane. Use double-substituted long-chain organosilane (1,5-disilylpentane as crosslinking agent, 250mL of DMSO solution with a mass concentration of 0.15%) to carry out structural curing and shaping of the above-mentioned surface-modified carbon fiber, (structure as figure 1 shown). Its hydrophobic properties such as figure 2 As shown, a filter packing with a pore size of 2.0 μm can be prepared (such as image 3 shown).

[0030]...

Embodiment 2

[0032] The carbon fiber filaments with a tensile force of 30T were made into fragments about 3 cm long, and the carbon fiber filaments were treated in concentrated nitric acid solution for 24 hours to form a layer containing hydroxyl groups. Fluoroorganosilane (5,5,6,6,7,7,8,8-octafluorodecylsilane, 250 mL of DMSO solution with a mass concentration of 15%) and small fragments of carbon fibers ( 100 g) was put into a flask, heated to 50° C., and stirred for 24 hours. Wash with DMSO and distilled water successively to remove excess organosilane. Using disubstituted long-chain organosilane (1,5-disilylpentane as a crosslinking agent, 250 mL of DMSO solution with a mass concentration of 0.10%) was used to perform structural curing and shaping of the above-mentioned surface-modified carbon fibers. A filter packing with a pore size of 18.0 μm can be prepared.

[0033] Such as Figure 4 As shown, the filter filler is cut and filled into the double-layer carbon fiber mesh, and the ...

Embodiment 3

[0035] The carbon fiber filaments with a tensile force of 30T were made into fragments about 3 cm long, and the carbon fiber filaments were treated in concentrated nitric acid solution for 24 hours to form a layer containing hydroxyl groups. Fluoroorganosilane (5,5,6,6,7,7,8,8-octafluorodecylsilane, 250 mL of DMSO solution with a mass concentration of 15%) and small fragments of carbon fibers ( 100 g) was put into a flask, heated to 50° C., and stirred for 24 hours. Wash with DMSO and distilled water successively to remove excess organosilane. Using disubstituted long-chain organosilane (1,5-disilylpentane as a crosslinking agent, 250 mL of DMSO solution with a mass concentration of 0.05%) was used to perform structural curing and shaping of the above-mentioned surface-modified carbon fibers. A filter packing with a pore size of 78.0 μm can be prepared.

[0036] Such as Figure 4As shown, the filter filler is cut and filled into the double-layer carbon fiber mesh, and the t...

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PUM

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Abstract

The invention provides a preparation method for a filter screen filler, a filter screen and applications. An organic coating layer covers carbon fiber surface, the coating layer is coated with various hydrophobic alkanes to construct a coating layer surface micro-nano structure, hydrophobicity of the coating layer is raised, an ultra-hydrophobic lipophilic coating layer is prepared, the carbon fibers after modification are subjected to crosslinking curing, and a filter screen filler with a certain pore diameter is prepared; the filter screen filler is cut and loaded in a double-layer carbon fiber screen, and a filter screen is obtained. The filter screen is used for oil field underground sand prevention and sand filtering, and plays a role in oil and water separation partly. The application fields of carbon fibers are widened, and usage cost of an oil filter pipe is lowered and crude oil smelting cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of chemical separation, and in particular relates to a preparation method of a filter net filler, a filter net and an application thereof. Background technique [0002] At present, superhydrophobic materials are widely used, such as building antifouling and water resistance, improving the buoyancy of ships, treating transportation pipelines, fabric manufacturing and filter materials. In addition, superhydrophobic materials can also be used for microfluidic control. There are many ways to reduce the surface free energy to construct superhydrophobic materials. It can be produced by template method, phase separation method, etching method, printing method, pore forming method of sublimable material particles, chemical vapor deposition method, sol-gel method, electrospinning method and layer-by-layer self-assembly method (LBL). The rough surface structure of the material surface increases the unevenness and un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/64D06M13/513B01D17/022D06M101/40
Inventor 李硕刘东林李敢张峰吕芳蕾伊伟锴周景彩李常友张雪李宁宁陈阳
Owner 淄博东森石油技术发展有限公司