Square vessels

Circular raking mechanisms are sometimes also used ia square basias with horizontal flow across the basia. Such designs have to iacorporate supplementary rake arms that reach iato the corners of the square vessel (Fig. 3). 

The stirred vessel is placed in a square vessel filled with water in order to take pictures of the droplets using a camera. After confirming that the flow in the vessel attains a steady state under a fixed impeller rotational speed, images of the droplets are taken by a camera. By using these pictures, the droplet size distribution is estimated by fitting new PSD defined by Eq. (5.18). 

First, both the solution vessel and the crystallizer are placed in a square vessel. Second, if the valve that connects both vessels is shut, each vessel is fixed at different temperatures (crystallizer 20 °C, solution vessel 20°C) and concentrations (crystallizer 105.9kg/m solution vessel 136.5 kg/m3). 

These supports will not make a rectangular or square vessel suitable for pressure or vacuum service. If such a vessel is to receive a masonry lining, it must be designed as a cylinder with dished or hemispherical heads, both top and bottom or as a sphere. (Reference 8, p 80). Such vessel must also be designed in accordance with the ASME Code For Unfired Pressure Vessels, Section VIII. 

For mass transfer dependent reactions, agitation must promote dispersion, discourage coalescence, and prevent settling. Usually, a single impeller can accomplish these tasks for vessels of H/T < 1.2 and for 0.9 < Pa/Pc < l l- However, additional impellers are used when H/T > 1.2 or when Pa/Pc is outside the limits cited above. The selection of a second impeller was discussed in Section 12-7.2.1. Dispersions of 1 mm drops are easily suspended in square vessels (H = T) and normally do not require use of a second impeller. 

A somewhat different type of high pressure reaction vessel is illustrated in Figs. VI, 4, 3-5. This is designed for hydrogenation reactions at working pressures from 1 to 300 atmospheres (4,500 lb. per square inch) and at temperatures from atmospheric up to 400°. Fig. VI, 4, 3... 

By tradition, top fermentation is carried out using methods that are named for the districts where they originated, eg. The Burton Union System and The Yorkshire Stone Square System. The first fermentation system is initiated in a hot temperated vessel for 36 h, then the fermenting wort is transferred... 

In the analysis of Synowiee etal. (1993), while the turbulent attrition rate is predieted to be eonstant with inereasing seale of operation at eonstant power input, the impaet attrition rate is predieted to deeline with the square of vessel size. In eombination... 

Unfortunately, operators often confuse a force (such as 20 lbs) with a pressure (such as 20 psi) and forget to multiply the 20 lbs by the number of square inches in the end of the vessel. 

Xep4 is best prepared by heating a 1 5 volume mixture of Xe and Fi to 400°C under 6 atm pressure in a nickel vessel. It also is a white, crystalline, easily sublimed solid the molecular shape is square planar (Xe-F 195.2pm) and is essentially the same in both the solid and gaseous phases. Its properties are similar to those of XeFi except that it is a rather stronger fluorinating agent, as shown by the reactions ... 

Again, fluoro and oxo complexes of rhenium predominate. The reaction of KF and ReFe in an inert PTFE vessel yields pink K2[ReFs], the anion of which has a square-prismatic structure hydrolysis converts it to K[ReOFs]. 

Vci y late in the ancient period the square sail was challenged by a more effective design the triangular lateen sail, aligned with the vessel s long axis (i.e., fore-and-aft). The origin of this rigging is uncertain unlike square sails, lateen sails operated as fabric aerofoils and permitted vessels to sail more closely into headwinds. 

Maximum Allowable Working Pressure (MAWP) the maximum pressure pounds per square inch gauge permissible at the top of a completed vessel in its operating position for a specific designated temperature corresponding to the MAWP pressure. This pressure is calculated in accordance with the ASME code (Par. UG-98) [1] for all parts or elements of the vessel using closest next larger to calculated value nominal thickness (closest standard for steel... 

A3 = exposed surface area of the vessel, in square feet. 

Refer to die propane and hydrogen nomographs (Figures 7-63B and 7-63D). The required vent area to protect the vessel specified from each of the charts will be a and b, square meters, respectively. 

Kfne = Proportionality factor in Stokes-Cunningham correction factor, dimensionless k = Constant for wire mesh separators 1 = Wire mesh thickness, ft L = Length of vessel from hydrocarbon inlet to hydrocarbon outlet, or length of decanter, ft L[ = Liquid entering Webre separator, lbs pel- minute per square foot of inlet pipe cross-section L, = EnLrainment from Webre unit, lb liquid per minute per square foot of inlet pipe cross section... 

Insulated vessels-)- (These arbitrary insulation condance values are shown as examples and are in British Thermal Units per hour per square foot per °F)... 

Electrode boilers are manufactured as factory-ready and are therefore examples of packaged boilers. Smaller units are normally housed in square, sheet metal cabinets, but larger units are normally round pressure vessels with the insulation following the shape of the vessel. 

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