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Analysis of chemical engineering processes (ANCHEM)
Question 1
Ammonia (NH3), a useful industrial chemical, can be produced by the following chemical reaction:
N2 + 3H2 → 2NH3
The schematic diagram below depicts the production process of ammonia. This plant is able to achieve 92% overall conversion of Nz. The fresh feed to the process (stream 1) contains 23.5 mol% N2, 75.7 mol% H2 and 0.8 mol% methane (CH4). CH4 is an inert in the feed that does not participate in the reaction. The fresh feed is mixed with a recycle stream (stream 7) to produce the feed to the reactor (stream 2). It is known that the recycle stream contains 5.6 mol% CH4 and that the reactor feed stream (stream 2) contains 4.7 mol% CH4. The reactor outlet steam (stream 3) goes into a condenser which condenses most (but not all) of the ammonia produced in the reactor. The gas stream leaving the condenser (stream 5) contains N2, H2, CH4 and uncondensed ammonia vapour. Use a basis of 100 kmol/h of the fresh feed stream.
Determine
(a) the molar flowrate and molar composition of the purge stream (stream 6);
(b) the production rate of liquid NH3 (kg/h);
(c) the mass flowrate and mass composition of the recycle stream (stream 7);
(d) the single-pass conversion of N2.
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hello miss ankita gupta i just excuse you to help me in the simulation of this problem A liquid mixture contains N components (N may be any number from 2 to 10) at pressure P(mm Hg). The mole fraction of the ith component is xi (i = 1. 2...., N), ..
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