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iPad? 16% D 1:26 PM sulms.soharuniedu.om Read the flowsheet given in Figure Q2 a

ID: 703493 • Letter: I

Question

iPad? 16% D 1:26 PM sulms.soharuniedu.om Read the flowsheet given in Figure Q2 and answer the following questions [1.5 marks each] i) What type of column is X-301? ii) What is the main product of this process? iii) Is the reaction inside R-301 exothermic or endothermic Gustify)? iv)ls there any reboiler in the process? (If yes specify by equipment number). v) What type of column is T-302 vi)What is the temperature of stream 5? vii) What type of column is T-301? viii) Is there any inert compound in this process (if yes specify)? ix) Is there any recycle stream in this process rather than that existed in T-303 (if yes, sepecify by stream number)? x) How many compressors were used in this flowsheet (sepecify by equipment number)? FIC deionized water off-gas solvent make-up T-302 acetic acid 200 T-303 E-301 E-304 C-301 VB air FIC FIC V-301 T-301 LIG FIC 40 P-301 AVE P-303 AVB 250 steam Op)

Explanation / Answer

1.X301 is an extractor

2.Main product is acrylic acid

3.The reaction is exothermic.The reactions are as follows:

Propylene+3/2oxygen---> acrylic acid+ water

Propylene+5/2oxygen---->acetic acid+ water

4.yes there is a reboiler E303 used below T303.

5. T302 is used as an absorber to remove the off gases.

6. The temperature stream 5 should be higher than 200°C but less than 400°C

7.T301 is used for quenching

8.In this process Nitrogen in air behaves just like an inert compound since it does not participate in the reaction

9.stream 8 has been recycled to T301

10.compressor used is C301 A/B.