Chemical Process Calculations Homework Help

P4.41 Hydrogen reacts with iron oxide (Fe₂O3) to produce metallic iron (Fe), with water vapor as a byproduct. 100% conversion of Fe₂O3 is achieved, and the metallic iron is easily separated from the hydrogen-water vapor mixture. The water is condensed, and the hydrogen is recycled. The hydrogen source is contaminated with 1 mol % CO. The recycle:fresh feed ratio is 4:1, and the maximum allowable CO in the gas fed to the reactor is 2.5 mol %. Draw a flow diagram, and complete a DOF analysis. Then calculate the single-pass and overall conversion of H₂ as well as all process flows, for a production rate of 1 ton/day metallic iron. (Hint: Consider changing basis to the gas feed.)

4-Explain in details the effect of temperature on adsorption rate.

12-What are the differences between Bronsted and Lewis acid sites?

2. Assume that coal is pure elemental carbon and that the combustion of coal is represented by the following balanced chemical equation: C + 0₂ = CO₂.a. How much energy is released in MMBTU when one tonne (1000 kg) of coal is burned?b. How much carbon dioxide (in tonnes) is formed per MMBTU of coal? Round your answer to three decimal places.

2. (4 points). The composite wall of an oven consists of three materials, two of which are of known thermal conductivity, kA = 20 W/(mK) and kc = 50 W/(mK), and known thickness,LA = 0.30 m and Lc = 0.15 m. The third material, B, which is sandwiched between materials A and C, is of known thickness, LB = 0.15 m, but unknown thermal conductivity kB. Under steady-state operating conditions, measurements reveal an outer surface temperature of Ts,o=20°C, an inner surface temperature of Tsi = 600°C, and an oven air temperature of T infinity=800°C.The inside convection coefficient h is known to be 25 W/m² - K. What is the value of kB?

17-What are the main principles of steam reforming process?

The mass composition of the whey from cheese making is 0.5% fat, 0.8% protein, 4.9%lactose, 0.1% ash (minerals). The remainder is water. The volume flow rate of the wheyis 200,000 L h-1. The density of the whey is 1012 kg m3 1. After the filtration step, all the protein is in the retentate and that this makes upabout 60% (mass %) of the dry solids (i.e. excluding water) in the retentate. Theretentate has an overall solids content of 15%. Taking a basis of one hour, whatis the total mass of solids in the retentate? 2. Also taking a basis of one hour, what is the mass of water in the retentate and in the permeate? 3. Assuming that the proportions relative to each other of the lactose, ash, and fat isunaffected by the filtration, calculate the lactose %, fat %, and ash % in theretentate. Confirm that your answers will mean that the retentate is 60%protein on a dry basis 4. What fraction of the lactose is in the permeate? 5. In the evaporator, the retentate is concentrated to 50% solids, by evaporatin gwater. What mass of water is evaporated in the evaporator (continue to use a basis of one hour).

B) the time-value solution once the step is applied, (3 points)

A lab has detected 2,900 (ug/m^3] of a volatile chemical in the indoor air. If the KH of the chemical is 1.8*10 (M/atm], what is the expected concentration of the chemical in a glass of tap water left on a desk? Assume the room temperature is 25 C

P4.14 Dimethyl carbonate (DMC, C₂H₂O3) can be synthesized by a process called oxidative carbonylation of methanol: A gas containing 80 mol % CH3OH and 20 mol % CO at 2000 gmol/h is mixed with air (79 mol % N₂ and 21 mol % O₂) and then fed to a reactor operating at steady state, where the reaction takes place. The flow rate of the stream leaving the reactor is 2264 gmol/h, and this stream contains no O₂. Draw a flow diagram and write the correct form of the material balance equations for all compounds in this system. Determine the flow rate of air to the reactor, the extent of reaction 4, and the composition (mol %) of the reactor effluent.