Carbon pressure

Example 2.4 A glass bottle of sparkling water has an acetal cap as shown in Fig. 2.14. If the carbonation pressure is 375 kN/m, estimate the deflection at the centre of the cap after 1 month. The value of Poissons ratio for acetal may be taken as 0.33. 

An alternative system is to operate with cold carbonation, in which case one or sometimes two carbonators are located within the cooler water bath. This system is able to operate at a much lower carbonation pressure (typically 2.7 bar compared with 5.4 bar for an ambient carbonator). 

Velocity (standard air), fpm Figure 84. Activated carbon pressure drop curves. 

Digestion of Wolframite-Scheelite Mixtures [5.1,5.23-5.26]. As long as the wolframite percentage is low, sodium carbonate pressure leach as applied to scheelite can be successful. Another method uses mixtures of sodium carbonate and sodium hydroxide because, as opposed to the digestion of scheelite, NaHC03 is formed in wolframite digestion by hydrolysis of FeC03. 

Figure 14.13 Effect of carbonization pressure on carbon yield from petroleum pitch. Source Reprinted with permission from Lachmann WL, Crawford SA, McAllister LE, Proc Int Conf on Composite Mats, Met Soc of AIME, New York, 1978. Copyright 1978, The Metallurgical Society of AMIE, now TMS (The Minerals, Metals and Materials Society).

Ammonium carbonate leaching has been developed specifically for uranium extraction from the ore at Grand Junction, Colorado. The technique and plant resembles that used for sodium carbonate pressure leach. 

Wheeler, C. M. et al. Ilie ammonium carbonate pressure leaching of uranium ores. B.M.I. 282 (1955). 

The base area, in addition to being susceptible to impact failure, can fail catastrophically from environmental stress cracking. Such cracking is a function of exposure to chemicals, which attack the plastics, and a biaxial stress field, which exists in the base. For PET, the main concerns are soaps used on filling line conveyors for cleaning and line lubrication, generally known as line lubes, and the hardness-alkalinity of the water. It is therefore important to thin out the wall in the base in the shortest possible distance from the center and build-up as much orientation as possible in this area. The specified base clearance must take into account that it is reduced from the molded dimension due to deformation and bottle creep under the carbonation pressure. 

Ratio of platinum to carbon by weight (Pt/C ratio) in platinum supported on carbon Pressure drop... 

Class 2, gases, exist when a container is under a certain amount of pressure. This does not include heliiun balloons, carbonated pressure, or balls used for sports or tires when inflated not greater than their rated inflation pressiure.A gas means a material that has a vapor pressure greater than 300 kPA (43.5 psi) at 50°C (122°F) or is completely gaseous at 20°C (68°F) at a standard pressure of 101.3 kPa (14.7 psi). Definitions for Class 2 materials can be found in 49 CFR 173.115. 

C, b.p. 156 C. The most important of the terpene hydrocarbons. It is found in most essential oils derived from the Coniferae, and is the main constituent of turpentine oil. Contains two asymmetric carbon atoms. The (- -)-form is easily obtained in a pure state by fractionation of Greek turpentine oil, of which it constitutes 95%. Pinene may be separated from turpentine oil in the form of its crystalline nitrosochloride, CioHigClNO, from which the ( + )-form may be recovered by boiling with aniline in alcoholic solution. When heated under pressure at 250-270 C, a-pinene is converted into dipentene. It can be reduced by hydrogen in the presence of a catalyst to form... 

The analyst now has available the complete details of the chemical composition of a gasoline all components are identified and quantified. From these analyses, the sample s physical properties can be calculated by using linear or non-linear models density, vapor pressure, calorific value, octane numbers, carbon and hydrogen content. 

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