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

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...

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