A 15% Na2SO4 solution is fed at a rate of 5.5 kg/min into a mixer which initially holds 45.5 kg of a 50-50 mixture of Na2SO4 and water. The exit solution leaves the mixer at a rate of 4.5 kg /min. Assuming uniform mixing, write the required mass balances and calculate the weight fraction of Na2SO4 in the mixer at the end of 10 min using 4th order Runge-Kutta Method by taking Δt= 0.5 min.

Solve the question using Excel

Material Balance, Water removal
A 2000 kg batch of pharmaceutical-grade powder containing 7.5% by weight water is dried in a drier.
After drying, 95% of the water that enters with the wet powder will have been removed from the powder.
a. Draw a diagram of the process. Label ALL streams and indicate stream compositions. Use proper
notations and units.
b. State a basis.
c. Perform an overall material balance and a material balance for each species.
d. Calculate the final batch composition in wt.%
e. Calculate the final weight of the dried powder (lbm) and the weight of the water removed (lbm).

Show all work

It is desired to use a rotary vacuum filter to separate slurry containing 20 kg of water per kilogram of solid material. Tests on the rotary filter at the conditions to be used for the filtration have indicated that the dimensionless ratio α/β' is 0.6 and 19 kg of filtrate (not including wash water) is obtained for each 27.8 kg of slurry. The temperature and pressure of the surroundings are 25 oC and 1 atm, respectively. The pressure drop to be maintained by the vacuum pump is 45 kPa. The fraction of the drum area submerged in the slurry is 0.3 and the fraction of the drum area available for suction is 0.1. On the basis of the following assumptions, estimate the kilowatt rating of the motor necessary to operate the vacuum pump if the filter handles 16000 kg/h of slurry. Assumptions are as follows:

Resistance of the filter medium is negligible.

Effects of air leakage are included in the value given for α/β'.

The value of β' is based on the temperature and pressure of the ambient air.

The filter removes all the solids from the slurry.

The vacuum pump operates isentropically with an overall efficiency of 50 percent for the pump and motor.

The ratio of Cp/Cv remains constant at a value of 1.4.

In this activity, you will develop an experimental procedure to solve a problem. Consider the following scenario: You are the manager of a chemical stockroom, and find a bottle containing approximately one liter of a clear and colorless solution of unknown identity and concentration. Your only clue to its identity is that it was found between bottles of silver fluoride and sodium fluoride, so it is likely an aqueous solution of one of those two compounds. You will need to develop a procedure to determine the following: a) The identity of the unknown solution b) The concentration of the unknown solution Write out a precise procedure, which includes all glassware, reagents, and steps. You will also need to write the calculations that you would need to determine the concentration of the solution. Assume that you have access to all of the equipment that you used in the chemistry lab this semester and any reagent you might need.

How would I find the concentration if the 1L bottle would be sodium fluoride or NaF?

In using my propane powered grill the other day (nice day, 65°F) I noticed the metal cylinder holding the propane had frost forming on it. Why?

7. Adsorption of an organic solute on activated silica gel gave the following data after equilibrium. S (mg cm-3) 0.139 0.089 0.066 0.047 0.037 Ca (mg/g) 0.03 0.026 0.0225 0.021 0.018 Fit the data to an adsorption isotherm and calculate the constants.

Design a sulfuric acid plant with a capacity of 8 ton per day. The product is to have a purity of 96% acid. Label all streams

what is the SOP for continuous fluidized bed dryer? and how to do the maintenance and cleaning?

An absorption column (1st unit) and a stripping tower (2nd unit) are used in a separation process
to separate gas mixtures that contains 35 mol% CO2 and the balance methane (CH4). The gas
mixture is fed to the bottom of absorption column where in the column, the gas mixture is
contacted with a recycled solvent. The contacting solvent stream contains 0.45 mol% dissolved
CO2 in methanol (CH3OH), which is recycled from the bottom of the stripping tower and enters
the absorption column at the top. The product gas stream leaving the top of absorption column
contains 1 mol% CO2 and 99 mol% methanol, where all methanol fed to the column exits in
this stream.
The liquid bottom stream of the absorption column which is rich in CO2 is fed to the top of the
stripping tower while a stream of nitrogen gas at a flow rate of 100 mol/h is fed to the bottom.
90% of carbon dioxide in the liquid solvent fed to the stripping tower is stripped off and exits
the tower together with the entire nitrogen fed. This stream is released to the atmosphere
through a stack. As mentioned above, the liquid stream leaving the stripping tower is the
recycled solvent stream of CO2 –methanol solution fed to the absorption column.
There are two assumptions made in this separation process where firstly, no methanol enters
as vapor phase in both columns as it is assumed to be non-volatile. Another assumption is that
nitrogen is insoluble in methanol. By taking 100 mol/h of gas mixture fed to the absorption
column as the basis of calculation,
a) With the support of a complete process flow chart, determine all flow rates and
compositions entering and leaving the stripping tower.

the explain application of the stability of the phases

(b) Explain the operating principles of a jaw crusher and a gyratory crusher. Under what circumstances would you consider replacing the jaw crusher in your process flowsheet with a gyratory crusher?

Hi there! I can not find solution of Octave Levenspiel Chapter 26. I need it immediately. Can you please help me!Thank you.

A solid feed consisting of

20 wt% of 1-mm particles and smaller

30 wt% of 2-mm particles

50 wt% of 4-mm particles

passes through a rotating tubular reactor somewhat like a cement kiln where it reacts with gas to give a hard nonfriable solid product (SCMI reaction control, T = 4 h for 4-mm particles).

26.3. Find the residence time needed for 100% conversion of solids.

26.4. Find the mean conversion of the solids for a residence time of 15 min.

26.5. Particles of uniform size are 60% converted on the average (shrinking core model with reaction controlling) when flowing through a single fluidized bed. If the reactor is made twice as large but contains the same amount of solids and with the same gas environment what would be the conversion of solids?

26.6. Solids of unchanging size, R = 0.3 mm, are reacted with gas in a steady flow bench scale fluidized reactor with the following result. F, = 10 gmlsec, W = 1000 gm, X, = 0.75 Also, the conversion is strongly temperature-sensitive suggesting that the reaction step is rate-controlling. Design a commercial sized fluidized bed reactor (find W) to treat 4 metric tonslhr of solid feed of size R = 0.3 mm to 98% conversion.

26.7. Solve Example 26.3 with the following modification: the kinetics of the reaction is ash diffusion controlled with T(R = 100 ~m=) 1 0 min.

26.8. Repeat Example 26.4 if twice the stoichiometric ratio of gas to solid, still at C,,, is fed to the reactor.

26.9. Repeat Example 26.4 if the gas is assumed to pass in plug flow through the reactor.

In a continuous distillation of a mixture of 40% A and 60% B with a flow rate of 10,000 kmol / hour, the volatile component composition is decomposed to 90% in distillate and 4% in boiler. Feeding is ¼ steam, ¾ liquid and partial condenser is used in the system.
a) Minimum ideal number of steps,
b) Minimum riflax rate,
c) Ideal stage number when the actual riflax ratio is 4.5 times the minimum value
d) Enrichment and peeling regions liquid and vapor flow rates (L, V, ?̅, ?̅),
e) If the average efficiency of the column is 0.5, the number of real steps,
f) Find the actual number of steps when n kad = 0.65