A solution of Acetone in Water is to be extracted using Chloroform as the solvent. The feed is 1000 kg/h of a solution containing 35 wt% acetone. The solvent comes from a solvent recovery unit and essentially pure chloroform. Inlet solvent flow rate is 350 kg/h. The exiting raffinate should contain 10 wt% acetone. Find the outlet concentrations and

The feed to a distillation column operating at 270 psia contains 10% ethane, 45% propane, 30% i-butane and 15% n-butane. Calculate the bubble and the dew point of the mixture.

One way to make coal “cleaner” is to gasify the coal into “city gas”. In a proposed molten-iron coal gasification process pulverized coal of up to 3 mm size is blown into a molten iron bath and oxygen and steam are blown in from the bottom of the vessel. Materials such as lime for settling the slag, or steam for batch cooling and hydrogen generation can be injected at the same time. The sulfur in the coal reacts with lime to form calcium sulfide, which dissolves into the slag. The process operates at atmospheric pressure and 1400 to 1500°C. Under these conditions, coal volatiles escape immediately and are cracked. The carbon conversion rate is said to be above 98% and the gas is typically 65 to 70% CO, 25 to 35% hydrogen, and less than 2% carbon dioxide. Sulfur content of the gas is less than 20 ppm. Assume that the product gas is 68% Co, 30% H2, and 2% CO2. Calculate the enthalpy change that occurs on the cooling of 1000 m3 of the gas at 1475 °C and 1 atm to 25°C and 1 atm.

Two aqueous NaOH streams are combined. Stream A is 26% NaOH by mole. Stream B is 69% NaOH by mole. The product (combined) stream has a flow rate of 125 lbmole/h and is 57% NaOH by mole. Determine the flow rate of stream A and stream B (lbmole/h).

Material Balances | Dr. Hayder A. Part II Ex3; A water solution containing 10 wt.% acetic acid is added to a water solution containing 30 wt.% acetic acid flowing at the rate of 20 kg/min. The product P of the combination leaves at the rate of 100 kg/min. What is the composition of P? For this process:

Magnesium metal, a gray solid, is heated in a crucible in the presence of oxygen. A white powder is collected from the crucible. This is an example of A) a chemical change B) a separation C) a mixture D) a physical change

a process consists of two distillation columns. the composition of the feed to the first column is 30 mol% benzene, 30 mol% toluene, and 40 mol% xylene. the top stream of the first column does not contain xylene. the benzene content of the dome stream from the first column is 55 mol %. the bottoms stream from the second column has a flow of 100 mol/h and contains 15 mol% toluene and no benzene; while the top stream of the second column contains 50 mol % benzene. the upper stream flow of the first tower is twice the upper stream flow of the second tower. determine the molar flux of the fresh feed stream and the overhead stream leaving the first column.

To make an instant tomato soup, a company makes soup powder from liquid step by a two-step process: concentrating the soup by removing water using a membrane to reach a concentration of 45% water, followed by a spray drying process which leads to a final moisture content of 3%. If the initial liquid tomato soup contains 9.0% solids and fat and enters the membrane separator at 4000 kg/hr, calculate: The flow-rate of the concentrated soup after membrane separation: kg/hr The flow-rate of water removed by the spray drying process (the second stage): kg/hr

•A homogeneous sludge forming a uniform incompressible cake is filtered through a batch leaf filter at a constant difference in pressure of 40 psi forming a ¾ inch cake in 1 hr with a filtrate volume of 1500 gal. 3 min. are required to drain the liquor from filter. 2 min required to fill the filter with water. Washing proceeds exactly as filtration using 300 gal. opening dumping and closing take 6 min. Assume the filtrate to have the same properties as water and neglect the resistances of the filter cloth and flow times. •How many gallons of filtrate are produced on the average per 24 hr.