A kind of environment-friendly crude oil decalcification agent and preparation method thereof

A crude oil decalcification agent, an environmentally friendly technology, applied in the refining of hydrocarbon oil, petroleum industry and other directions, can solve the problems of easy sediment blockage of equipment pipelines, strong corrosiveness of industrial equipment, expensive chemicals, etc., and achieve a green and environmentally friendly preparation process. , The effect of low production cost and simple use process
CN105924591BActive Publication Date: 2018-07-20SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2018-07-20

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Abstract

The invention relates to an environment-friendly polyether multipolymer crude oil decalcifying agent with stable performance, in particular to an environment-friendly crude oil decalcifying agent and a preparation method thereof. The crude oil decalcifying agent has excellent decalcifying performance, and is prepared from polyether amino-acid ester reaction monomers, allyl thiourea and unsaturated double-bond monomers containing vinyl through free radical polymerization. The general structural formula is shown in the description, wherein A is a repetitive structure unit generated after copolymerization of the unsaturated double-bond monomers containing vinyl, R is -CH2-SH or -(CH2)2-CONH2, the polymerization degree x is 2-500, the polymerization degree y is 2-500, the polymerization degree z is 2-500, and the repetitive unit m is 3-100.
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Description

technical field

[0001] The invention relates to an environment-friendly crude oil decalcifying agent and a preparation method thereof, belonging to the crude oil pretreatment technology in the technical field of oil refining. Background technique

[0002] Due to the increasingly scarce oil resources, more and more oil fields adopt water flooding, polymer flooding, CO 2 With the wide application of tertiary oil recovery technologies such as flooding, the properties of crude oil are getting worse and worse, and the proportion of low-quality crude oil with high salt content and high acid content is increasing. Common metals in crude oil include sodium, calcium, magnesium, iron, nickel, vanadium, etc. It is generally believed that in addition to sodium in the form of inorganic salts such as chloride, most metals such as calcium, magnesium, and iron exist in the form of naphthenates and phenates, while nickel and vanadium mostly exist in the form of porphyrin compounds or asphal...

Claims

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