Effect of Input Gas Temperature

5 Effect of Output Acid Composition on Output Acid Temperature 

6 Effect of Input Gas SO3 Concentration on Output Acid Temperature 

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Fig. 24.3. Effect of input gas temperature on Fig. 24.1 s output acid temperature (with Table 24.1 s input and output masses). Output acid temperature increases slightly with increasing input gas temperature. Output gas temperature remains unaltered at the 350 K input acid temperature.

Effect of input gas SO3 concentration on output acid temperature... 

The heated-thermocouple anemometer measures gas velocity from the cooling effect of the gas stream flowing across the hot junctions of a thermopile supplied with constant electrical power input. Alternate junctions are maintained at ambient temperature, thus compensatiug for the effect of ambient temperature. For details see Bunker, Proc. Instrum. Soc. Am., 9, pap. 54-43-2 (1954). 

The following sections describe the effects of six industrial variables on 3-bed S02 oxidation efficiency. Except where gas input temperature is variable, input gas temperature is 690 K, all beds. 

The gas-phase reaction of carbon monoxide and steam to produce carbon dioxide and hydrogen has been studied in the presence of a Siemens ozonizer discharge. A factorial design was used to determine the effect of input electrical power, pressure, space velocity, and temperature on the conversion of carbon monoxide. With the aid of an empirical equation, derived from the factorial design data, the region of maximum conversion of carbon monoxide within the limits of the factors was determined. The rate of approach to thermodynamic equilibrium was investigated for one set of experimental conditions and was compared with previous work. The effect of changing the surface-to-volume ratio of the reactor upon carbon monoxide conversion was also determined. 

Fig. 6.13. Effects of furnace temperature and input on the level of the neutral pressure plane elevation shown on six sectional elevation views of a furnace with no furnace pressure control. If there were any gas flow in the furnace, the neutral pressure plane would be more like a wrinkled sheet than a plane. The top three show the effect of temperature with no change in input. The bottom three show the effect of input rate with no change in furnace temperature.

A recessed cup was mad to measure the effect of changing the temperature of the top surface on the heat input to the liquid nitrogen. The bottom of this cup, made of brass extended 5 in. below the top edge of the flask and was 1/16 in. smaller in diameter than the flask, so that it did not contact the walls. The body of the cup was about 1 in. smaller in diameter than the bottom plate to allow for gas passage while minimizing the effect of the cup wall temperature. Liquids at various temperatures were then put in the cup and the boil-off rates of the nitrogen were compared. Data were obtainedwith cup temperatures of 371 , 324 , 285 , 195 , and 146 K. These data are presented in Fig. 4. 

The development of a dynamic model of the recovery boiler at the mill is addressed in this study. The model would allow operators to gain deeper process knowledge, in particular the effect of input variables on the flue gas temperature out of the furnace. Future studies will consider the benefits of using such detailed model for formulating/implementing advanced control strategies. 

Input acid mass per kg mol of first catalyst bed feed gas Figure 24.5 Effect of absorption tower input acid mass (per kg mol of input gas) on output acid temperature. Hot output acid is obtained by a decreasing add input rate at a constant gas input rate. 

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