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Environment-friendly low temperature oil sludge demulsifier and preparation method thereof

An environmentally friendly, demulsifier technology, applied in chemical instruments and methods, sludge treatment, water/sludge/sewage treatment, etc., can solve problems such as unsatisfactory treatment of oily sludge, improved oil recovery rate, and complex process. , to achieve the effects of excellent biodegradability, low production cost and simple preparation method

Active Publication Date: 2014-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is relatively complicated, and the oil recovery rate needs to be improved
CN102492460A discloses a preparation method and application of a crude oil low-temperature demulsifier. The method prepares a demulsifier through polyethylene polyamine polyether and alkylphenol polyether. Demulsification and dehydration speed, the dehydration rate is over 90%, but the treatment of oily sludge with high solid content is not ideal, and there is a lack of specific data on oil recovery rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The alkyl glycoside (R=C 10 , n=3) 29g, Cocamidopropyl Hydroxysultaine (R=C 13 ) 14g of sodium hydroxide 0.1g, water 56.9g, mixed at 20°C for 40 minutes to obtain a sludge demulsifier.

Embodiment 2

[0027] The alkyl glycoside (R=C 12 , n=3) 8g, Cocamidopropyl Hydroxysultaine (R=C 12 ) 5g of sodium hydroxide 0.13g, water 86.87g, mixed at 30°C for 30 minutes to obtain a sludge demulsifier.

Embodiment 3

[0029] The alkyl glycoside (R=C 10 , n=2) 20g, Cocamidopropyl Hydroxysultaine (R=C 12 ) 10g of sodium hydroxide 0.12g, water 69.88g, mixed at 15°C for 35 minutes to obtain a sludge demulsifier.

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PUM

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Abstract

The invention discloses an environment-friendly low temperature oil sludge demulsifier which comprises the following components on a basis of demulsifier weight: 6-30 parts of alkyl glycoside; 4-15 parts of cocoamido propyl hydroxy sulfobetaine; 0.1-1 part of alkali; and 54-89 parts of water. The preparation method comprises the following content: well mixing alkyl glycoside, cocoamido propyl hydroxy sulfobetaine, alkali and water to obtain the low temperature oil sludge demulsifier of the invention. The demulsifier has the advantages of good low temperature demulsification effect, wide application temperature range, high oil recovery rate, low production cost, greenness, environmental protection, simple preparation method, and wide application scope. The oil sludge demulsifier of the invention can be used for harmless treatment of tank bottom oil sludge, scum, and activated sludge, and also can be used for treatment of various oil sludge generated in petroleum exploitation and storage and transportation enterprises.

Description

technical field [0001] The invention relates to an oil sludge demulsifier and a preparation method thereof, in particular to an environmentally friendly low-temperature oil sludge demulsifier and a preparation method thereof. Background technique [0002] A large amount of black solid and semi-solid waste containing oil will be produced in the process of oil extraction, gathering and transportation, refining and oily sewage treatment, which is called oil sludge, and its main components are oil, mud and water. The size of solid particles in oil sludge can range from less than microns to several inches, most of which are between 1 and 100 microns. The composition of oil depends on the type of crude oil, refinery structure and operating conditions. The composition of sludge may change over time. According to statistics, China's annual output of oil sludge is nearly 3 million tons, which contains about 600,000 tons of crude oil resources. In addition to a large amount of ag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00
Inventor 回军杨飞飞赵景霞杨丽刘春阳赵昕吴巍
Owner CHINA PETROLEUM & CHEM CORP
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