Answer / ibrahim khan

To catch fire, fire triangle's condition, i.e. Fuel, Ignition source, and Oxygen must come in contact. Hence it doesn't catch the fire.

Answer / rajesh kumar bhagat

Because, to catch fire oxygen is necessary and column works
with no presence of oxygen and air.

Answer / prashant chalke

fractionating columns at these high temperature are mostly
operated at low pressure or in vacuum hence there is no
chances of taking fire.

Answer / वै&#23

(This answer is purely based on my thermodynamics knowledge i gained till now)
Fire can only be produced in case of a combustion reaction.
And it can take place only if their is any free radical or unstable compound which can react with oxygen. It does not depend on temperature at all. So as fractionating column contains a mixture of two stable compouds, their is no chance of catching fire in the column, what so ever be the temperature.

Answer / rajeshkannan

in order to catch fire for any material it must reach its
auto ignition temperature

A concentric, counter-current heat exchanger is used to cool lubricating oil. Water is used as the coolant. The mass flow rate of oil into the heat exchanger is 0.1 kg / s = FO. For oil, the inlet temperature TIO = 100 degree Celsius and the outlet temperature TOO = 55 degree Celsius. For water, the inlet temperature TIW = 35 degree Celsius and the outlet temperature TOW = 42 degree Celsius. What is the mass flow rate of water in kg / s, FW needed to maintain these operating conditions? Constant for heat capacity of oil is CO = 2131 J /(kg K) and for water is CW = 4178 J /(kg K). Use the equation (FO)(CO)(TIO – TOO) = (FW)(CW)(TOW – TIW).

1 Answers  

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why traction voltage is 25kv

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0 Answers  

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What factors should be compared when evaluating cooling tower bids?

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which reformer efficiencywise best?

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CHEMICAL MATERIAL BALANCE - EXAMPLE 2.1 : Two methanol-water mixtures are contained in separate tanks. The first mixture contains 40.0 wt % methanol and the second contains 70.0 wt % methanol. If 200 kg of the first mixture is combined with 150 kg of the second, what are the mass and composition of the product? The symbol of weight percent is wt %.

1 Answers  

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Question 52 - The half-life for first order reaction could be described in the differential equation dC / dt = -kC where k is a constant, C is concentration and t is time. (a) Find the equation of C as a function of t. (b) Find the half life for such reaction or the time required to reduce 50 % of the initial concentration, where k = 0.139 per minute. (c) When the initial concentration Co is 16 mol / cubic metre, how long does the reaction required to achieve the final concentration of 1 mol / cubic metre?

1 Answers  

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What parameters should be considered while selecting type of filter?

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