We are designing a beverage plant to produce beverages sweetened with dextrose and no

fructose or sucrose. Your task is to design a process to blend water and a concentrated

dextrose syrup to produce two products.

One product, containing $20+-0\mathrm{.}5wt\%$ dextrose, to be produced at the rate shown

in Table $1$ below. This product will go to Area $2000$ of the new plant.

The other product, containing $5+-0\mathrm{.}25wt\%$ dextrose, to be produced at the rate

shown in Table $1$ below. This product will go to Area $3000$ of the new plant.

The products should leave your area at $\frac{3}{b}ar($gauge$).$ The concentration specifications

for the products are average concentrations over a $1-$hour period.

You will have two feeds available:

Concentrated dextrose syrup at $40C$ and $5$ bar $($gauge$)$ will be available at the

concentration shown in Table $1$ below. Note that this concentration may vary

over a range of $+-2wt\%.$

Food$-$grade water will be available at $20C$ and $5$ bar $($gauge$).$

Please observe the following constrains:

Mixing vessels should use pump$-$arounds with a total flow rate of $60,000k\frac{g}{h}.$

Size vessels to be about $75\%$ full under normal circumstances.

Approximate mixing times at design conditions are as follows:

To dilute concentrated dextrose to $20$ wt $\%$ dextrose: $30$min

To dilute concentrated dextrose to $5wt\%$ dextrose: $45$min

To dilute $20$ wt $\%$ dextrose to $5$ wt $\%$ dextrose: $20$ min

Your design should include controls for the feed and product stream flow rates, the

product concentrations, and tank levels. You may neglect the dynamics of control valves

and measuring devices.