【Basic Knowledge Activity】Professional “Basic Knowledge” in the petrochemical sector: What is ash content in crude oil?
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This post was last edited by Adventure Wang on 2016-3-6 17:09. What is ash in crude oil? Ash is the non-combustible residue left after petroleum and petroleum products are burned under specified conditions, expressed as a mass percentage. Ash is mineral salts dissolved in oils, mainly naphthenates. For lubricating greases containing additives, ash also includes metal oxides, fillers, and mechanical impurities. ============================================= 【Petrochemical Section】Compilation of professional “basic knowledge” threads (Supported by the main forum; surprises await, and great prizes are up for grabs) http://bbs.hcbbs.com/thread-1557057-1-1.html (Source: Haichuan Chemical Forum) This initiative encourages various sections to organize the publication of basic knowledge threads, or for individuals to do so on their own (the content can be gathered from the internet or created originally; participation can take place through multiple topics, with no restrictions on the approach – it could be an explanation of a noun or an introduction to a series of principles). What are some suggestions and methods for getting in touch with cleaners? The regular administrator will reward the content that performs excellently. You will also be rewarded for regions where the activities are more active. (Regions should also conduct summarization and optimization based on the amount of such content available in their area.) ———————————————— The second phase of the event runs from February 20, 2016, to the end of June 2016; at least 50 award vouchers are available for you to claim (mugs, power banks, USB drives, and other prizes or event benefits). Prizes are awarded at any time based on performance, and additional rewards are given as well at any time depending on performance. (12,000 activity points and rewards await the regions that perform well)
What are the acidity and acid number of oils? The acidity value hidden in this post refers to the number of milligrams of potassium hydroxide required to neutralize 100 mL of the oil sample [mg(KOH)/100mL]; this value is generally applicable to light oils. The acid number, on the other hand, refers to the number of milligrams of potassium hydroxide required to neutralize 1 g of the oil sample [mg(KOH)/g]
It refers to the suspended solid heavy hydrocarbons in crude oil, other than liquid hydrocarbons
The residue left after crude oil burns is called ash.
Ash is the non-combustible residue left after combustion; especially when catalytic cracking cycle oil and slurry are mixed into fuel oil, silicon-aluminum catalyst powder accelerates the wear of pumps and valves. Furthermore, ash also covers the boiler’s heating surfaces, reducing heat transfer efficiency.
It refers to the suspended solid heavy hydrocarbons in crude oil, other than liquid hydrocarbons
The ash content in crude oil refers, in simple terms, to the ash that remains after the crude oil is burned during testing. A high value for this parameter indicates that the yield of light oil is not high.
Ash is the non-combustible residue left after burning
Residue is the material that remains after calcination under anaerobic conditions; it is mainly carbon. Ash, on the other hand, is the residue left after high-temperature burning under aerobic conditions, and it mainly consists of salts and other impurities. It serves as an indicator for light oils; after dissolution and filtration, the sediment represents heavy oils such as crude oil and residue. Similarly, after dissolution and filtration, heptane is used to analyze the impurities while toluene is used to analyze the sediment
The ash content in crude oil refers to the inorganic substances obtained by calcining the residue left after burning the sample under specified conditions, expressed as a mass percentage.
The composition and content of ash vary depending on the type, properties, and processing methods of the crude oil. The ash content of crude oil is mainly caused by small amounts of inorganic salts and organometallic compounds, as well as certain impurities that are present in it. V2O5 in the ash has a low melting point; it adheres to the metal surface, causing high-temperature corrosive wear. Especially in the presence of sodium, low-melting-point vanadium-sodium mixed oxides are formed, which exacerbates the corrosion effect. Therefore, fuel oils containing high levels of vanadium should be treated with oil-soluble magnesides to raise the melting point of vanadium compounds and prevent corrosion