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Corn straw oil stain adsorbent for oil field, and preparation method thereof

A technology of corn stalks and adsorbents, which is applied in the field of corn stalk oil pollution adsorbents for oilfields and its preparation, can solve the problems of inconvenient application, waste of petroleum resources, and small adsorption capacity, and achieve improved adsorption capacity, adsorption efficiency, and improved adsorption capacity. Performance, the effect of improving the adsorption site

Pending Publication Date: 2020-06-26
李娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The development of modern society and economy is inseparable from the support of oil, but with the rapid increase of offshore oil exploitation, incidents such as blowout, rupture of oil pipeline, explosion of offshore oil exploration platform, shipwreck, collision and oil spill during oil transportation have occurred one after another. Continuously, causing a serious waste of oil resources, at the same time, oil pollution has become a problem that we need to focus on
[0003] Oil spill adsorbents are mainly divided into three categories: inorganic mineral materials, organic synthetic materials and organic natural materials. With the deepening of research, we found that corn stalks have low cost and biodegradable properties, and can be used as preparation materials for oil pollution adsorbents. However, its adsorption capacity is small, which brings inconvenience to our practical application.

Method used

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  • Corn straw oil stain adsorbent for oil field, and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] S1: Prepare materials:

[0050] Weigh polyvinyl alcohol, calcium chloride, glutaraldehyde, trimethylsilane, reduced graphene oxide, sodium alginate, sodium periodate and ethylene glycol in proportion, and set aside;

[0051] Weigh zinc nitrate hexahydrate, 2-methylimidazole, methanol, N,N-dimethylformamide, polyacrylonitrile, corn straw, nano-silica, toluene, sodium chlorite, sodium hydroxide and ethanol, spare;

[0052] S2: Preparation of pretreated fibers:

[0053] Take corn stalks, cut them into small pieces of 2 cm, soak them in water for 6 hours, then soak them in nano-silica emulsion for 8 hours, explode them with high-pressure steam for 3 times, stir them at high speed for 10 minutes after the explosions, and let them stand to dry to obtain material A;

[0054] Take toluene and ethanol, stir and mix for 10 minutes, then add material A, extract in oil bath at 90°C for 6 hours, wash with ethanol, and dry at room temperature to obtain material B; take sodium chlor...

Embodiment 2

[0069] S1: Prepare materials:

[0070] Weigh polyvinyl alcohol, calcium chloride, glutaraldehyde, trimethylsilane, reduced graphene oxide, sodium alginate, sodium periodate and ethylene glycol in proportion, and set aside;

[0071] Weigh zinc nitrate hexahydrate, 2-methylimidazole, methanol, N,N-dimethylformamide, polyacrylonitrile, corn straw, nano-silica, toluene, sodium chlorite, sodium hydroxide and ethanol, spare;

[0072] S2: Preparation of pretreated fibers:

[0073] Take corn stalks, cut them into 3cm pieces, soak them in water for 7 hours, then soak them in nano-silica emulsion for 9 hours, explode them with high-pressure steam for 3-4 times, stir them at high speed for 15 minutes after the explosions, and let them stand to dry to obtain material A;

[0074] Take toluene and ethanol, stir and mix for 13 minutes, then add material A, extract in oil bath at 91°C for 7 hours, wash with ethanol, and dry at room temperature to obtain material B; take sodium chlorite and ...

Embodiment 3

[0089] S1: Prepare materials:

[0090] Weigh polyvinyl alcohol, calcium chloride, glutaraldehyde, trimethylsilane, reduced graphene oxide, sodium alginate, sodium periodate and ethylene glycol in proportion, and set aside;

[0091] Weigh zinc nitrate hexahydrate, 2-methylimidazole, methanol, N,N-dimethylformamide, polyacrylonitrile, corn straw, nano-silica, toluene, sodium chlorite, sodium hydroxide and ethanol, spare;

[0092] S2: Preparation of pretreated fibers:

[0093] Take corn stalks, cut them into small pieces of 4 cm, soak them in water for 8 hours, then soak them in nano-silica emulsion for 10 hours, explode them with high-pressure steam for 4 times, stir them at high speed for 20 minutes after the explosions, and let them stand to dry to obtain material A;

[0094] Take toluene and ethanol, stir and mix for 15 minutes, then add material A, extract in oil bath at 92°C for 8 hours, wash with ethanol, and dry at room temperature to obtain material B; take sodium chlo...

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Abstract

The invention discloses a corn straw oil stain adsorbent for an oil field, and a preparation method thereof. The corn straw oil stain adsorbent comprises oxidized sodium alginate, pretreated fibers, modified carbon fibers and other components. The preparation method comprises the following steps: preparing a modified gel with a high specific surface area and a high adsorption capacity by taking the modified carbon fibers, oxidized sodium alginate and pretreated fibers as main bodies and polyvinyl alcohol as a reinforcing phase, and then performing hydrophobic treatment through trimethylsilaneand reduced graphene oxide to obtain the oil stain adsorbent. The adsorbent has certain hydrophobic and oleophylic properties and excellent oil absorption and oil retention capacities. According to the corn straw oil stain adsorbent for the oil field, and the preparation method thereof, the component design is reasonable, the technological operation is simple, and the prepared adsorbent has excellent hydrophobic and oleophylic properties, obviously increased oil stain adsorption capacity, high specific surface area, excellent oil retention performance, can be suitable for various working conditions and has high practicability.

Description

technical field [0001] The invention relates to the field of oil pollution adsorption, in particular to a corn straw oil pollution adsorbent for oil fields and a preparation method thereof. Background technique [0002] The development of modern social economy is inseparable from the support of oil, but with the rapid increase of offshore oil exploitation, incidents such as blowout, rupture of oil pipeline, explosion of offshore oil exploration platform, shipwreck, collision and oil spill during oil transportation have occurred one after another. Continuously, causing a serious waste of oil resources, at the same time, oil pollution has become a problem that we need to focus on. [0003] Oil spill adsorbents are mainly divided into three categories: inorganic mineral materials, organic synthetic materials and organic natural materials. With the deepening of research, we found that corn stalks have low cost and biodegradable properties, and can be used as preparation material...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F103/08
CPCB01J20/261B01J20/28047B01J20/28057C02F1/285C02F2103/08
Inventor 李娟
Owner 李娟
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