Answer / anand

actually above 350-375 oC temp. the crude oil is going to
crack and the light product will form. but the main aim of
this distillation process is to seperate the various
fractions rather than producing the light product. so to
avoid this the residue of the atmospheric distillation
tower is processed under vacuum above 350 oC and we get the
various types of product which will be useful for making
various types of lubricating oil, mineral oil, transformer
oil, quenching oil etc.

Answer / sourya

All the fractions that can be separated by the distillation
process under atmospheric conditions is separated in the ADU
and the higher molecular weight fractions that crack under
those conditions to produce carbon(petroleum coke) is
removed as the bottoms and then passed on to the next Vacuum
Distillation unit(VDU) for recovery of all the higher fractions.

Answer / dhanashree

The main aim of distillation is to obtained various
petroleum product at various temp. & press. for that
recovery ,distillation system require rage of temp. As
petrolium products are heighly explosive, catches fire at
low temp.Vaccum distillation is used in petroleum refinery.
Becouse under vaccum the boiling point of liquid get lowers
down & pressure required is also less.

Answer / pushkar deo

It is a process for getting vacuum distilates for
lubricating oil and to get feed for FCC.

For what ration of Lengh/Dia. of tank (Jacketed tank), maximum heat transfer area is available?

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I HAVE BEEN SELECTED FOR IOCL PANIPAT INTERVIEW,ACCTUALLY IAM DOING APPRENTIES TRAINEE IN CPCL.IAM GOING TO ATTEND THE IOCL PANIPAT INTERVIEW.SO PLEASE HELP ME HOW I PREPARE FOR INTERVIEW BY SUBJECT AND ALSO BY FIELD.

0 Answers   IOCL,

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Explain the functioning of a three-way catalytic converter.

0 Answers  

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why should we have to maintain excess air in furnaces and boilers while burning any fuel?

6 Answers   IOCL,

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Question 109 - (a) Acceptable wavefunction in quantum mechanics in the range of : negative infinity < x < positive infinity, vanishes at least at one boundary. Which of the following is the wavefunction or are the wavefunctions of acceptable theory : P = x, P = | x |, P = sin x, P = exp (-x), P = exp (-| x |)? State the reason. (b) Let linear momentum operator P = -ih d / dz. The wavefunction is S = exp (-ikz) where i x i = -1, k and h are constants. Find the linear momentum of such wavefunction by using the term P x S.

1 Answers  

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which is more effective , a single extraction with a large volume of solvent or several small volume extractions? Explain.

2 Answers  

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QUANTUM BIOLOGY - EXAMPLE 33.4 : (a) According to Landauer (1986), the capacity of human memory is approximately X bits. Assume that a human retains 2 bits / second of visual, verbal, tactile and musical memory, find the value of X if a human lifetime is approximately 2.5 billion seconds. (b) The total power consumption of the human brain is about 25 Watts. The bread of 100 grams will produce 1000 kilojoules of energy. How much bread is needed to run a human brain for 1 day?

1 Answers  

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What is an isochoric process?

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Question 65 – A differential equation is given as y” + 5y’ + 6y = 0, y(0) = 2 and y’(0) = 3. By using Laplace transform, an engineer has correctly produced the equation L {y} = (2s + 13) / [(s + 2)(s + 3)] = A / (s + 2) + B (s + 3). (a) Find the values of A and B. (b) The inversed Laplace transform of 1 / (s + a) is given by exp (-at) where a is a constant. If the statement : L {y} = 9 L { exp (-2t) } - 7 L { exp (-3t) } is correct, find the equation of y as a function of t as a solution to the differential equation stated in the beginning of this question. When L {d} = 9 L {b} - 7 L {c}, then d = 9b - 7c with b, c and d are unknowns.

1 Answers  

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what are the precautions u are taking while starting HT motors?

2 Answers   HPCL, MRPL Mangalore Refinery and Petrochemicals Limited,

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What are the specialized grinding methods?

0 Answers  

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why u opted for chemical engg?

2 Answers  

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