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Preparation method of composite oil overflowing treatment material of cellulose aerogel-carbamic acid alkyl ester oil coagulating agent

A technology of alkyl carbamate and cellulose airgel, which is applied in chemical instruments and methods, and other chemical processes, and can solve problems such as poor oil retention

Active Publication Date: 2014-08-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oil-absorbing agents can effectively absorb oil spills, but sometimes there are disadvantages such as poor oil retention rate, while oil-gelling agents can effectively gel the oil phase effectively, and the oil-retaining performance is much higher than that of general oil-absorbing materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] Specific Embodiment 1: In this embodiment, hydrophobic and lipophilic cellulose airgel-12CTDI alkyl carbamate oil coagulant composite type oil spill treatment material is prepared according to the following steps:

[0019] Step 1: Preparation of cellulose airgel

[0020] Using pulp as raw material, use a high-pressure homogenizer to homogenize the fibers so that the size of the cellulose fibers is at the micron or nanometer level. Uniformly disperse it in water to adjust the concentration of cellulose aqueous solution to about 0.5wt%, and let it stand in the range of 35°C for gelation to prepare nanocellulose hydrogel. The hydrogel was pre-frozen overnight in a low-temperature refrigerator at -10°C to obtain a frozen cellulose hydrogel. Put it in a freeze dryer at -30°C for 48 hours to fully vacuum freeze-dry, and then the cellulose aerogel with low density and high porosity can be prepared.

[0021] Step 2: Preparation of superhydrophobic cellulose airgel

[0022] D...

specific Embodiment approach 2

[0027] Specific implementation mode 2: This implementation mode prepares hydrophobic and lipophilic cellulose airgel-14CTDI alkyl carbamate oil coagulant composite type oil spill treatment material according to the following steps:

[0028] Step 1: Preparation of cellulose airgel

[0029]Using pulp as raw material, use a high-pressure homogenizer to homogenize the fibers so that the size of the cellulose fibers is at the micron or nanometer level, disperse them evenly in water, and adjust the concentration of cellulose at 1wt%, at 35°C The gel is left standing inside to prepare the nanocellulose hydrogel. The hydrogel was pre-frozen overnight in a low-temperature refrigerator at -10°C to obtain a frozen cellulose hydrogel. Put it in a freeze dryer at -30°C for 48 hours to fully vacuum freeze-dry, and then the cellulose aerogel with low density and high porosity can be prepared.

[0030] Step 2: Preparation of superhydrophobic cellulose airgel

[0031] Deposition of TiO on t...

specific Embodiment approach 3

[0037] Specific implementation mode three: This implementation mode prepares hydrophobic and lipophilic cellulose airgel-carbamate alkyl ester oil gelling agent composite oil spill treatment materials according to the following steps:

[0038] Step 1: Preparation of cellulose airgel

[0039] Using pulp as raw material, use a high-pressure homogenizer to homogenize the fibers so that the size of the cellulose fibers is at the micron or nanometer level. Uniformly disperse it in water to adjust the concentration of cellulose aqueous solution to about 0.5wt%, and let it stand in the range of 35°C for gelation to prepare nanocellulose hydrogel. The hydrogel was pre-frozen overnight in a low-temperature refrigerator at -10°C to obtain a frozen cellulose hydrogel. Put it in a freeze dryer at -30°C for 48 hours to fully vacuum freeze-dry, and then the cellulose aerogel with low density and high porosity can be prepared.

[0040] Step 2: Preparation of superhydrophobic cellulose airg...

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PUM

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Abstract

The invention discloses a preparation method of a composite oil overflowing treatment material of a cellulose aerogel-carbamic acid alkyl ester oil coagulating agent, and relates to a preparation method of a porous network structure material which has properties of hydrophobicity, lipophilicity and oil coagulation. The method comprises the following steps: (1) preparing cellulose aerogel; (2) preparing super-hydrophobic cellulose aerogel; (3) preparing a carbamic acid alkyl ester oil coagulating agent; (4) preparing the cellulose aerogel-carbamic acid alkyl ester oil coagulating agent composite material. As the natural recyclable cellulose is subjected to hydrophobic modification so as to be used as a raw material for preparing an oil absorbing material, the oil overflowing treatment material which is prepared by effectively compounding the oil absorbing material and the oil coagulating agent has both the oil coagulation property of the oil coagulating agent and the oil absorbing property of the oil absorbing agent, and has multiple advantages such as low cost, environmental friendliness, rapid oil absorption, good oil coagulation effect, high oil retaining rate, economical efficiency and biodegradablility.

Description

technical field [0001] The invention relates to a preparation method of a porous network structure material having both hydrophobic-lipophilic-oil-condensing properties, in particular to a cellulose airgel-carbamate alkyl ester oil-condensing agent composite oil spill control material Preparation. Background technique [0002] With the increasing development of the global economy, the demand for oil and its products is getting higher and higher, and many serious oil spill pollution accidents have occurred in the process of oil extraction and transportation. According to statistics, 3000-5000kt of oil spilled into the sea due to various accidents in the world every year has caused a huge waste of resources and seriously endangered the natural ecological environment. For example, in 2010, the crude oil spill accident in the Gulf of Mexico caused huge and irreversible trauma to the local environment; Entering the waters of Qingdao also brought great harm to the safety of peop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08J9/36C08J9/28C09K3/32
Inventor 刘宇艳王永臻刘振国马涛吴松全
Owner HARBIN INST OF TECH