【Basic Knowledge Activity】Steam Pressure – a Key “Basic Knowledge” Topic in the Petrochemical Sector

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Vapor pressure: At a certain temperature, when a liquid is in equilibrium with the vapor above its surface, the pressure exerted by that vapor is called the saturated vapor pressure, or simply vapor pressure. The higher the vapor pressure, the easier it is for the liquid to vaporize. Like other pure liquids, the vapor pressure of pure hydrocarbons changes only with the temperature of the liquid. As the temperature rises, the vapor pressure increases. The vapor pressure of petroleum and its distillates differs from that of pure substances; it is influenced not only by temperature but also by the degree of vaporization (or liquid phase composition). At a constant temperature, changes in the amount of vaporization lead to changes in vapor pressure. There are generally two ways to express the vapor pressure of oils: one is the Reid pressure specified in oil quality standards, which is measured under defined conditions (38°C, with a volume ratio of vapor to liquid of 4:1). The other is the true vapor pressure, which refers to the vapor pressure when the vaporization rate is zero. Welcome to in-depth discussions============================================= Discussions on the two-stage combined cracking process can be found at http://bbs.hcbbs.com/thread-1560503-1-1.html (Source: Haichuan Chemical Industry Forum). [Petroleum and Chemicals Section] A compilation of professional “basic knowledge” posts is being carried out (the large forum offers surprises and prizes for participants). More information is available at http://bbs.hcbbs.com/thread-1557057-1-1.html (Source: Haichuan Chemical Industry Forum). We encourage various groups to create or individuals to post basic knowledge-related posts; the content can be gathered from the internet or created originally. Participants can use multiple topics, and there are no restrictions on the way in which content is presented – it could be an explanation of a single term 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 intensive. (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). 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 activity points and rewards await the regions that perform well)