PL GATE Chemical Engineering

31/01/2016

GATE CHEMICAL ENGINEERING 2016 ANSWERS BY PROLIFE LAUNCHER GATE ACADEMY PUNE

30/01/2016

GATE CHEMICAL ENGINEERING 2016 ANSWERS BY PROLIFE LAUNCHER GATE ACADEMY PUNE...

27/07/2015

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Q.No.1: A piece of equipment having a negligible salvage and scrap value is estimated to have a service life of 10 years. The original cost of the equipment was Rs. 40000. Determine the following: The depreciation charge for the fifth year if double declining-balance depreciation is used.

26/07/2015

17/07/2015

We are happy to announce our Regular batch for GATE Chemical Engineering in Pune. Monday to Friday Morning Batch. New Batch starting from 20th July 2015. For more details call us on : 7030 182 475.

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14/05/2015

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23/04/2015

Ethylene Oxide production :

- Reactions:

• C2 H4 + 0.5 O2→ CH2 O.CH2O
• Ethylene to air ratio: 3 – 10 %

• Side reaction products: CO2 , H2O

• Catalyst: Silver oxide on alumina

• Operating temperature and pressure: 250 – 300°C and 120 – 300 psi

• Supressing agent for side reactions: Ethylene dichloride

• Reaction is exothermic

-Process technology :
• Air and ethylene are separate compressed and along with recycle stream are sent to the shell and tube reactor.
• The reactor is fed on the shell side with Dowtherm fluid that serves to maintain the reaction temperature. A dowtherm fluid is a heat transfer fluid , which is a mixture of two very stable compounds, biphenyl and diphenyl oxide. The fluid is dyed clear to light yellow to aid in leak detection.

• The hot dowtherm fluid from the reactor is sent to a waste heat recovery boiler to generate steam.

• The vapour stream is cooled using a integrated heat exchanger using the unreacted vapour stream generated from an absorber.

• The vapour stream is then sent to the heat integrated exchanger and is then sent back to the reactor and a fraction of that is purged to eliminate the accumulation of inerts such as Nitrogen and Argon.

• The product vapors are compressed and sent to a water absorber which absorbs ethylene oxide from the feed vapors. Eventually, the ethylene oxide rich water stream is sent to a stripper which desorbs the ethylene oxide + water as vapour and generates the regenerated water as bottom product. The regenerated water reaches the absorber through a heat integrated exchanger.

• The ethylene oxide + water vapour mixture is compressed (to about 4 - 5 atms) and then sent to a stripper to generate light ends + H2O as a top product and the bottom product is then sent to another fractionators to produce ethylene oxide as top product. The heavy ends are obtained as bottom product.

16/04/2015

Best books for GATE Chemical Engineering Exam Preparation.

Best reference books for preparing for Graduate Aptitude Test in Engineering (GATE) – Chemical Engineering. Use any of the mentioned books to clear your basic concepts of Chemical Engineering, Engineering Mathematics, General Aptitude & English. GATE exam tests basic concepts of Chemical Engineering…

24/03/2015

GATE score is used for admission in ME, M.Tech, MS & Direct PhD after B.E/B.Tech in IIT’s, IISc Bangalore, NUS, NTU, ICT Mumbai, CSIR Lab’s and NIT’s and for PGDBM in NITIE Mumbai.

11/03/2015

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