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High-efficiency low-temperature oil sludge de-emulsifier and preparation method thereof

A demulsifier and low-temperature oil technology, applied in the field of high-efficiency low-temperature oily sludge demulsifier and its preparation, can solve the problems of unsatisfactory treatment of oily sludge, complicated process, lack of oil recovery rate, etc., and achieve good demulsification characteristics and preparation method. Simple, high demulsification effect

Active Publication Date: 2015-03-18
CHINA PETROLEUM & CHEM CORP +1
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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

[0026] Polyoxyethylene rosin acid (n=4) 20g, monoethanolamide sulfosuccinic monosodium cocoate (R=C 13 ) 4 g, 0.1 g of hydrochloric acid, and 75.9 g of water were mixed at 30° C. for 30 minutes to obtain a sludge demulsifier.

Embodiment 2

[0028] Polyoxyethylene rosin acid (n=5) 7g, cocoic acid monoethanolamide sulfosuccinic monoester disodium (R=C 12 ) 16 g, 0.2 g of formic acid, and 76.8 g of water were mixed at 35° C. for 35 minutes to obtain a sludge demulsifier.

Embodiment 3

[0030] Polyoxyethylene rosin acid (n=3) 13g, cocoic acid monoethanolamide sulfosuccinic monoester disodium (R=C 14 ) 12g, oxalic acid 0.12g, water 74.88g, mixed at 25°C for 32 minutes to obtain a sludge demulsifier.

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Abstract

The invention discloses a high-efficiency low-temperature oil sludge de-emulsifier, the de-emulsifier comprises the following components by weight part: 4-21 parts of rosin-polythylene oxide ester, 3-18 parts of disodium cocoyl monoethanolamide sulfosuccina, 0.1-1 part of acid catalyst and 60-92 parts of water. A preparation method of the de-emulsifier comprises the following steps: uniformly mixing rosin-polythylene oxide ester, disodium cocoyl monoethanolamide sulfosuccina, an acid catalyst and water, and then obtaining the low-temperature oil sludge de-emulsifier. The oil sludge de-emulsifier has the advantages of good demulsification effect under low temperature, wide usage temperature scope and high oil recovery rate, and the method has the advantages of low production cost, environmental protection, simple process and wide application scope. The oil sludge de-emulsifier can be used for harmlessness treatment of oil sludge at bottom of pot, scummings and activated sludge, and also can be used for treating various kinds of oil-containing sludge generated by petroleum exploitation, storage and transportation enterprises.

Description

technical field [0001] The invention relates to an oil sludge demulsifier and a preparation method thereof, in particular to a high-efficiency 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 aged crude o...

Claims

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Application Information

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IPC IPC(8): C02F11/00
CPCC02F11/00C02F11/12C02F2303/06C10G1/00C10G2300/1003
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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