Process configuration

A payback period of 3 is used here. The formula for the TAG computation is taken from Kaymak and colleagues. As a result of different relative volatility rankings, the process may vary from a one-column configuration to a two-column configuration, with different product withdraw locations. We use a type 1 example to illustrate the design procedure. 

Place the reactive zone in the midsection of the column, and fix the number of reactive trays Nrx- 

EFFECTS OF BOILING POINT RANKINGS ON THE DESIGN OF REACTIVE DISTILLATION 

Place heavy reactant feed ATFheavy on the top of the reactive zone, and introduce light reactant feed NFu hi on the lowest tray of the reactive zone. 

Guess the number of trays in rectifying section Nr and stripping section Ns- 

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Biolog ic lRemoval. Certain organisms normally present in activated sludge have the abiUty to store phosphoms. The process configuration for bio-P removal involves an anaerobic step in which phosphoms is released and acetate taken up by the bio-P organisms. This is followed by an aerobic step in which phosphoms is rapidly taken up by the bio-P. Under proper operating conditions, soluble effluent phosphoms levels of 0.1 mg/L are achievable from municipal wastewater. 

Changing process configuration to SRC-II was successful in producing about 50% additional oil. However, a large increase in light hydrocarbon gas make accompanied this increase with an attendant reduction in hydrogen utilization efficiency, and problems persisted using coals other than Kentucky 9/14. 

Process Configuration Figure 22-56 shows a basic cell pair. A stack is an assembly of many cell pairs, electrodes, gaskets, ana manifolds needed to supply them. An exploded schematic of a portion of a sheet-flow stack is shown in Fig. 22-60. 

Process Configuration As befits a field with a vast number of important applications and a histoiv of innovation, there are countless variations on how an MF process is rim. 

Maintenance/ The QRA team will need information about process configurations reliability during maintenance activities and historic data on equipment per-... 

MF and UF systems can be designed to operate in various process configurations. A common configuration is one in which the feedwater is pumped with a cross-flow tangential to the membrane. The only pretreatment usually provided is a crude prescreening (usually 50 to 300 / m). The water that permeates the membrane is clean. The water that does not permeate is recirculated as concentrate and blended with additional feedwater just after the preliminary filter. To control the concentration of the solids in the recirculation loop, some of the concentrate is discharged at a specified rate. 

Because the physical characteristics of the particulate solids both affect, and are affected by each unit operation, there exists an interaction between them. The study of particulate systems thus provides methods for synthesizing and evaluating economically optimum process configurations. 

The experimental rig and process configuration for integrated bead milling and fluidised bed adsorption is shown in Figure 17.5. 

Demineralization Processes As in dealkalization, there are various IX demineralization process configurations possible depending on the nature of the supply water, the final water quality needs, and the operating preferences. Demineralization may take place in anywhere from one to four vessels per train, depending on the specific purification process. 

General Considerations. Continuous mass processes for polystyrene have been in commercial use since the 1930 s, and for rubber-modified polystyrene (HIPS) since the 1950 s. Much of the information on equipment design, process configuration and operating parameters connected with continuous processes is found in the patent literature. There are inherent limitations to such sources. Recognizing this, we will provide... 

Process Configurations Basic membrane process configurations shown in Fig. 20-55 include single-pass, batch, fed-batch, and continuous. 

A way to classify wastestreams is to consider them intrinsic, extrinsic, or somewhere in-between. Intrinsic wastes are inherent in the fundamental process configuration, whereas extrinsic ones are associated with the auxiliary aspects of the operation. 

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