Method for preparing amphiphilic lignin nanomaterial based on pulping black liquor, amphiphilic lignin nanomaterial, and oil sludge detergent

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United States of America Patent

PATENT NO 11731997
APP PUB NO 20220144874A1
SERIAL NO

17095297

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Abstract

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The disclosure provides a method for preparing an amphiphilic lignin nanomaterial based on pulping black liquor, an amphiphilic lignin nanomaterial, and an oil sludge detergent. In the disclosure, physical treatments such as ball milling and high-pressure jet homogenization treatment are conducted on alkali lignin at the early stage to adjust the molecular weight and size of alkali lignin and thus to give alkali lignin nanoparticles with uniform particle sizes; and on this basis, a chemical treatment such as alkylation grafting modification is conducted to give amphiphilic lignin nanoparticles with both hydrophilicity and lipophilicity. Due to the nano-size effect, the amphiphilic lignin nanomaterial has a significantly-increased specific surface area (SSA) and effectively-improved surface properties, which can reduce the oil-water interfacial tension, and emulsify the crude oil and peel off the crude oil from the surface of rock particles, so as to achieve the purpose of oil-solid separation.

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Patent Owner(s)

Patent OwnerAddress
GUANGXI UNIVERSITY530004 100 EAST UNIVERSITY ROAD XIXIANGTANG DISTRICT NANNING THE GUANGXI ZHUANG AUTONOMOUS REGION NANNING CITY THE GUANGXI ZHUANG AUTONOMOUS REGION 530004

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Wei Nanning, CN 2284 14552
Liang, Chen Nanning, CN 95 974
Liu, Xinliang Nanning, CN 12 87
Qin, Chengrong Nanning, CN 16 1
Sha, Jiulong Nanning, CN 1 0
Wang, Zhiwei Nanning, CN 239 1011
Yao, Shuangquan Nanning, CN 4 0
Zhang, Jian Nanning, CN 1504 17611

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