【Basic Knowledge Activity】In the professional \"basic knowledge\" of the petrochemical industry, what are the indicators used to assess the safety of light diesel?
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The last edit to this post was made by Adventure Wang on 2016-3-6 at 17:14. What are the criteria used to assess the safety of light diesel? The criterion for assessing the safety of light diesel is its flash point; this is an important indicator determined in accordance with safety and fire prevention requirements. The lower the distillation range of diesel, the lower its flash point. Correct answer +5 wealth; in-depth discussion +10 wealth============================================= Discussion on the two-stage catalytic cracking process: http://bbs.hcbbs.com/thread-1560503-1-1.html (Source: Haichuan Chemical Industry Forum) [Petroleum and Chemical Engineering Section] Compilation of professional “basic knowledge” posts (Supported by the main forum; amazing prizes await you!) http://bbs.hcbbs.com/thread-1557057-1-1.html (Source: Haichuan Chemical Industry Forum). This initiative encourages various sections to organize, or individuals to create, posts on basic knowledge topics (the content can be gathered from the internet or created originally; multiple themes can be used, and there are no restrictions on the way of participation – 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 well. You will also be rewarded for regions where the activities are more intensive. (Regions should also carry out 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). Awards can be given at any time based on performance, and additional rewards can also be granted at any time depending on performance. (12,000 event points and rewards await those regions that perform well)
The indicator for assessing the safety of light diesel is its flash point, which is an important parameter established in accordance with safety and fire prevention requirements. The lower the distillation range of diesel, the lower its flash point.
It should be the flash point; diesel’s saturated vapor pressure isn’t measured either
Good combustibility: Good combustion performance refers to the ability of diesel, once injected into the engine’s combustion chamber and mixed uniformly with hot air to form a combustible mixture, to ignite spontaneously within a short time and burn completely. Cetane number is an indicator used to assess the spontaneous ignition properties of diesel; it represents the percentage by volume of hexadecane in a standard fuel with the same ignition properties as the diesel. It is determined using a specified single-cylinder diesel engine (cetane tester). The level of cetane number in diesel is determined by its chemical composition and the composition of its fractions. A high cetane number indicates that the fuel has good ignition properties in diesel engines, a short afterburning period, uniform and complete combustion, a steady rise in pressure after combustion, smoother operation, and better starting performance for the diesel engine. According to tests, when diesel with a cetane number of 53 is used, the diesel engine can start within 3 seconds, whereas it takes 45 seconds to start when diesel with a cetane number of 38 is used. Conversely, the lower the cetane number of diesel, the rougher the operation of the diesel engine, and the worse its starting performance. The diesel cetane number of high-speed diesel engines used in construction machinery is generally not lower than 40–50. It should be noted that an excessively high cetane number is also undesirable; when it exceeds 65, the molecular weight of diesel increases, the fractions become heavier, the freezing point of diesel rises, its volatility decreases, it is prone to cracking leading to incomplete combustion, black smoke is emitted from the exhaust, and fuel efficiency declines. Aoxinfutong emulsified diesel meets this requirement well. Good low-temperature fluidity: The low-temperature fluidity of diesel is directly related to the ability of the diesel engine’s fuel supply system to deliver fuel to the injectors properly. Diesel with poor low-temperature fluidity can cause interruptions in fuel supply at low temperatures, preventing the diesel engine from operating properly under such conditions. Therefore, the low-temperature fluidity of diesel is a fundamental requirement for ensuring that a diesel engine can function correctly in low-temperature environments. 3. Appropriate volatility: The volatility of diesel refers to its ability to change from a liquid state to a gaseous state. Diesel has good volatility, which allows for rapid formation of the air-fuel mixture; this enables it to meet the requirements of high-speed diesel engines with their short combustion times. It facilitates complete combustion, resulting in lower fuel consumption and less emissions. However, if the volatility is too high, all the diesel will burn rapidly, causing a sharp increase in pressure inside the cylinder. This leads to rough operation of the diesel engine, and excessive diesel vapor makes storage, transportation, and use unsafe. Through decades of research and practice at home and abroad, the performance of emulsified diesel has seen significant improvements. Aoxinfutong emulsified diesel was developed on this basis, and research on its combustion performance and emission parameters has reached a new level
The indicator for assessing the safety of light diesel is its flash point, which is an important parameter established in accordance with safety and fire prevention requirements. The lower the distillation range of diesel, the lower its flash point.
The indicator of the safety of light diesel is its flash point.
The indicator for assessing the safety of light diesel is: the closed-cup flash point of the diesel
The indicator for assessing the safety of light diesel is the flash point. :lol@chunhui1009 @Guan Gongyu @Linlin Shangshang @Ma Yiyi @Zhang Jun_nLlUg @slll611 @zls1457 @sdshihua @OnlySingsEchoes @BlackToothPaste
The indicator for assessing the safety of diesel is the flash point, which is an important parameter specified based on safety and fire prevention requirements. The flash point is the lowest temperature at which, under specified conditions using specialized equipment, a flammable liquid is heated such that the mixture of its vapor and air comes into contact with a flame, resulting in an instantaneous ignition. A flash fire is a minor explosion, but not every mixture of combustible gas and air will explode upon encountering fire. Only when the volume fraction of the combustible gas in the mixture reaches a certain level will an explosion occur; if this proportion is too high or too low, there will not be enough air or fuel for an explosion to take place.
Flash point: The lighter the fraction of light diesel, the lower its flash point. The lower the flash point, the higher the fire hazard
The indicator for assessing the safety of light diesel is its flash point, which is an important parameter established in accordance with safety and fire prevention requirements. The lower the distillation range of diesel, the lower its flash point.