【Basic Knowledge Activity】Saturated Vapor Pressure – a Key “Basic Knowledge” Topic in the Petrochemical Sector
Thread Content
The last edit to this post was made by Learning is endless 166 on 2016-3-7 at 13:46. [Basic Knowledge Activity] In the petrochemical industry, the term \"saturation vapor pressure\" refers to the pressure at which the liquid phase of a substance is in equilibrium with its gas phase at a certain temperature. 【Petrochemical Section】Compilation of specialized “basic knowledge” posts (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 posts, or for individuals to do so on their own (the content can be gathered from the internet or created originally; multiple topics can be used, and there are no restrictions on the way in which participants contribute – 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 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 those regions that perform well.) [International Women’s Day] Praise the women around me (jointly organized by the Petrochemical and Production zones) http://bbs.hcbbs.com/thread-1563621-1-1.html @GuanGongYu @TraceElements @FishInTheDesert @zls1457 @WatcherStars @ShenLiang1985 @percy @RainAfterSunshine @rgsmdqy @BookBoy @cy1125915 @sdmt1984 @jlszhoujidai
The principle of \"saturation vapor pressure\" is used in many aspects of industrial production; that is, saturated vapor at a certain pressure necessarily corresponds to a certain temperature. Here are two examples: 1. In the petrochemical industry, the storage of liquefied gases. For example, the saturated vapor pressure of propane at 50°C is 1.77 MPa. When designing propane storage tanks or spheres, the design temperature of 50°C is used, and the corresponding design pressure is set at 1.77 MPa, thereby ensuring both safety and cost-effectiveness. 2. In many food processing industries, where temperature control is necessary, steam heating is used; for example, in jacketed boilers, by controlling the pressure of saturated steam entering the jacket, it is possible to regulate the heating temperature. The temperature needs to be adjusted; adjusting the pressure is sufficient.
Who can explain why, in the Redfield method for measuring the saturated vapor pressure, the volume ratio of liquid to air must be 4:1?