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Anticorrosive Research of Processing Technology of High (Inclusive) Acid and High Sulfur (Linclusive) of Crude Oil

Author: XuZuoZuo
Tutor: ZhuXueDong；LiuJun
School: East China University of Science and Technology
Course: Chemical Engineering
Keywords: crude oil high acid crude oil high salt crude oil process corrosion prevention
CLC: TE624
Type: Master's thesis
Year: 2011
Downloads: 149
Quote: 0
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Abstract


The oil refining process is a very complicated process, in which metal corrosion including chemical and electro—chemical corrosion usually occurs. Such corrosion not only causes the loss of large quantity of metal, reducing the service life of equipment and pipeline and increasing accident rates, but also affect the products quality and energy consumption. Therefore, corrosion protection plays an important role in the oil refinery production, especially for the refinery that designs to process high sulfur or acid crude oil. Corrosion protection measures shall be put into full consideration during the whole course of refinery building from the front-end engineering, equipment material selection to the process of construction.In addition, combining the features of the specific plant and feed—stocks used in the actual production, corrosion protection measures shall be taken on the production process and individual equipment to reduce the corrosion rates and ensure the best performance of the plant. In this paper, different demulsifier desalination, the effects of dehydration, the final choice of white Terry Baker, the company effective CC8289C or oil-soluble demulsifier EC2452A Nalco Company, applied to the existing electric desalting emulsion breaking, desalting, decalcified, high-temperature ring complete set of alkyl acid preservative treatment technology, desalination, dewatering effect is obvious. NCH-8E-type selection and an inhibitor in the top of the low-temperature hydrogen sulfide corrosion control, corrosion inhibitor for high temperature use CK356N2 parts of naphthenic acid corrosion control, through the process control device to effectively solve the processing of high (inclusive) High Sulfur (inclusive) of crude oil brought about a series of acid corrosion problems. High-temperature parts of the naphthenic acid corrosion have also been effectively controlled, and internal control targets to achieve in the petrochemical, achieved good results. The results showed that:the technology can handle a variety of low-quality, heavy high (inclusive) sour crude oil, has a strong adaptability, easy operation and simple.

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CLC: > Industrial Technology > Oil and gas industry > Oil, natural gas processing industry > Petroleum refining > The refining process
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