molar flow rate., Chemical Engineering

100 mol/hr of methane reacts with steam to produce CO2 in a main reaction of the reformer. The amount of steam used is 12.5% excess based on this main reaction. Some of the methane is also converted to CO in the reformer. The total conversion of methane is 89.1% while the yield of CO2 is found to be 78%. The effluent from the reformer is sent to the converter where all of the CO is selectively burnt to CO2 in a stream of 8.6% excess air.


The resulting product stream from the converter is mixed with a fresh make-up feed of CO2 so that a molar ratio of 3 is obtained for H2 to CO2 in the mixed product. This mixed stream is then further combined with a recycle stream before entering the methanol synthesis reactor. In the methanol synthesis reactor, CO2 reacts with H2 to give methanol. A fractional conversion of 51.1% is achieved in a single pass of the reactor. The reactor product is sent to a condenser that separates all of the methanol and water from the other components. The aqueous methanol product contains only methanol and water while the second stream from the condenser contains the remaining components that are split into a purge and a recycle. This second stream is analyzed and found to contain 38.8 mol% nitrogen.


Solve the molar flow rates of all the components in the process and then choose the correct response from the choice below.
Answer

the recycle/purge mole ratio is 13.69
the make-up CO2 flow s 29.9 mol/h
mole ratio of CH3OH/water from condenser is 0.653
Two choices, A and B, are correct
The three A-B-C choices are all correct
Posted Date: 10/21/2012 2:39:44 PM | Location : United States







Related Discussions:- molar flow rate., Assignment Help, Ask Question on molar flow rate., Get Answer, Expert's Help, molar flow rate. Discussions

Write discussion on molar flow rate.
Your posts are moderated
Related Questions
Requirements of boiler feed water

Water from a supply having a total head of 100 ft is used in the jet of an ejector in order to lift 10 ft3/s of water from another source (at a lower level) that has a total head o

Planar defects * Grain boundaries occur where the crystallographic direction of the lattice abruptly changes. This usually happens when two crystals start growing separately an

ac++ programming which calculate molcular weight of hydrocarbon compounds

What is the aim of shear stress distribution?

Different types of breakdown: (i) Intrinsic breakdown ] (ii) Thermal breakdown (iii)Defect breakdown

Oxidation - Silicon has the unique ability to be oxidized into silica, which produces a chemically stable, protective and insulating layer  on the surface of the wafer. The produc

A copper pipe carrying steam at 1 atm and 100 °C has internal and external radii of 20 and 25 mm, respectively, and thermal conductivity 350 W/m K. With the inside wall at 100 °C a

What is phosphate conditioning in water softening?

What kind of separation processes are there?