What is the role of software in process equipment design and what software should one refer to while dealing with related problems?

Aakash

• Sep 17th, 2017

Software are necessary because they are used in simulation of a process for example to find out the composition of distillate and bottom product of distillation column and we can also vary the number ...

Sandeep cheekati

• Mar 14th, 2016

We can use Dynochem, Visimix, Aspen plus

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What is the effect of pressure in the Distillation Operation? It is also said that when the vapor pressure of the liquid component equals the atmospheric pressure, boiling occurs; can anyone give me an example for this type of Distillation?Thank you

Sina Salimi

• May 30th, 2016

Increasing pressure makes separation harder, because it decreases relative volatility

rohit

• Sep 3rd, 2011

If we increase the pressure, the no. of stages in a distillation column becomes less as the liquid boils earlier (boiling occurs when the atmospheric pressure becomes equal to the vapour pressure of the liquid.)

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What is difference between micro-organisms & micro pollutants?

omenli collins

• Oct 13th, 2016

Micro-organism exists internally and can be destroyed at high temperature. It performs multiple functions, it can cause harmful diseases but can also help to enrich the soil. It is a living thing. M...

Khalid I Jamadar

• Jun 1st, 2016

A microorganism or microbe is an organism which is too small to be seen by the unaided human eye. They are microscopic. The study of microorganisms is called microbiology. Microorganisms include bacteria, fungi, archaea or protists and viruses.

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What is the difference between composite and alloy metals ?

Lovy

• Aug 7th, 2018

Alloys and composites are mixtures of elements. The main difference between alloy and composite is that alloy has at least one metal in its composition whereas composites do not have metal components.

teju

• Aug 1st, 2017

A composite metal is a material made of two or more different metals having different physical or chemical properties that when combined produce a material with characteristics different from individu...

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How can we calculate heating of natural gas?

amit kumar panigrahi

• Sep 5th, 2015

We are using gas chromatogrpahy for calculating the carorific value of a combution gas

Nihar

• Sep 3rd, 2015

By thermocouple, pyrometer, We can measure and calculate the heat of Natural gas..?

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I have a liquid mixture in a bottle containing different synthetic substances dissolved from their salt forms (i.e. lidocaine hydrochloride, anhydrous caffeine). These compounds are dissolved in distilled water.
So the question is: How can I separate the dissolved solids from the aqueous solution? Can I do it by forming a hydrochloride precipitate by adding some hydrochloric acid? Or, say the...

Nilesh

• Jun 29th, 2017

In case of solids the lighter solids can be separated by decanting it in water medium when both of the solids are ... Distillation can also be used to separate dissolved salts from their aqueous solutions.

rockky

• Apr 27th, 2017

By evaporation and distillation process. Through many evaporator series to find the Liqueur or product that you need

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What is the difference between Filtration and Sedimentation?

Mani

• Sep 7th, 2017

Sedimentation is a separation of particles depending upon their density whereas filtration is a separation of particles depending upon particle size.

Ravi

• Jul 5th, 2017

Sedimentation is the separation of solids from liquids by gravitational method where as filtration is the separation of solids from liquids by filter medium

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What is the difference between heat and mass transfer ?

swara

• Aug 9th, 2018

Heat transfer may be defined as the flow of energy or heat from higher temperature region to lower temperature region due to temperature difference.
Mass transfer may be defined as flow of conc. of molecules from solute to solvent due to concentration difference.

kumar shivam

• Apr 25th, 2018

Heat Transfer deals with the movement of heat and temperature gradients while Mass Transfer deals with concentrations of a particular substance. ...

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Why ACTIVITY is so useful than considering PARTIAL PRESSURE in thermodynamics point of view?

sekhar reddy

• Apr 1st, 2013

A=f/p,activity coefficient describes the deviation in ideal behavior of any liquid when it a non ideal mixtures ,which is dimensionless

nandha.rajesh

 Profile Answers by nandha.rajesh Questions by nandha.rajesh

• Feb 19th, 2010

I think activity means activity coefficient if it is that then it it is very easy to answer your question. Generally partial pressure term is used when there is mixture means more than one compund is ...

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Explain What is Wilson Equation?

mohammadhosein samet

• Jun 4th, 2012

The Wilson equation was published by Grant M. Wilson as Vapor-Liquid Equilibrium. XI. A New Expression for the Excess Free Energy of Mixing

raj kumar sitaliya

• Oct 6th, 2011

Wilson plot /equation is the graphical calculation of convective heat transfer coefficient is proportional to Uexp 0.8.

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Why Iron Carbide diagram can be established upto 6.67% only? What are structure beyond 6.67% carbon.

Samayaraj

• Aug 27th, 2011

Molecular weight of iron carbide(Fe3C) is 179.5

Atomic weight of carbon is 12

Percent carbon = (12/179.5)*100 = 6.67%

aqsa rana

 Profile Answers by aqsa rana Questions by aqsa rana

• Jun 13th, 2010

The iron-iron carbide diagram is only upto 6.67%, because beyond that percentage structure remains the same so we do not study further.

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When salt is added to water, what happens to its freezing point?

vbijendra

 Profile Answers by vbijendra Questions by vbijendra

• Sep 5th, 2009

For pure substances, there is no change in their freezing point, due to addition of impurities, freezing point decreases.

deepakjsd

 Profile Answers by deepakjsd Questions by deepakjsd

• Jul 28th, 2009

Freezing point decreases.

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What are the major characteristics of a metal which distinguishes itself from any other metal?

aqsa rana

 Profile Answers by aqsa rana Questions by aqsa rana

• Jun 13th, 2010

There are some important charestristics of metals that distinguish them from other materials, like in some metals (Al), have high strength to weight ratio.  Metals are good conductors of heat and electricity. They are malleable and ductile.   

kirthi.nataraj

 Profile Answers by kirthi.nataraj Questions by kirthi.nataraj

• Aug 19th, 2009

By its melting point, stability and rigidity.

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Suppose I Have Two Hydrocarbon Mixtures ,Each Mixture Has Known Composition & Freezing Point , Is There Any Empirical Formula To Calculate The Freezing Point Of a Blend Of Those Mixtures?

neeru srangal

 Profile Answers by neeru srangal Questions by neeru srangal

• Aug 17th, 2014

delta T = (Freezing point of pure solvent) - (Freezing point of solution) = kf * m
m= molal conc of solution (moles of solute/ kg of solvent)
kf = freezing point depression constant

Debu

• Feb 7th, 2014

Antoine eq may be used for find out temp if vapor pressure is known for both substance ..then average of that may be answer .

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shah siddharth j

• Feb 24th, 2015

Pseudo pressure is the mathematical expresion accounts for variable compressibility and viscosity of gas with respect to pressure

suji

 Profile Answers by suji Questions by suji

• Mar 19th, 2012

In regard to pressure the mathematical pressure function for the variable viscosity and compressibility of gas is Pseudo-pressure or real gas potential. Its the changes that occur in gas properties with pressure.

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As we know steel making is done in a furnace at very high temperatures, but how is that temperature maintained in a furnace on continuous basis ??

paul ericson

• Jul 22nd, 2015

We can control the fuel rate to the furnace.for this we can use air-ratio control system where your process instrumentation control comes in to play. refer( air ratio control system)

Nihar

• Jun 2nd, 2015

It is maintained by flow rate of natural gas or any fuel that is used for furnace... and this high temp is measured by thermocouple and from thermocouple we change the rate..

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Why there is coating in cement mill fan and separator ?

ashwin

• Dec 7th, 2015

Because particles adhere to fan due to static electricity so usually acoustic sounding horn is attached to fan casing coating too helps

shabhar

• Dec 4th, 2015

May be to prevent corrosion or to prevent the chemicals to react with the metals.

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The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is, less or more? Can any one help me out with an explanation...

Nandita Baral

• Mar 20th, 2017

The COP of a Refrigerator/AC would be given by expression: COP = (Cooling Effect/Power Input). The cooling effect produced by a refrigerator is obviously more for a refrigerator. At the same time th...

sunny vanza

• Feb 21st, 2016

It is less.

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How we can find specific heat, enthalpy, minimum ignition Energy and other thermodynamics properties of a new compound in pharma manufacturing industry.

Rushikesh urane

• Jul 18th, 2018

There are many calculation for thermodynamics .......like specific heat=s=q/m*dT

ashish mishra

• Sep 7th, 2016

There are many methods available for calculation of thermodynamic properties. Use chemical properties handbook by Yaws.

like heat capacity : cp=A+Bt+ct^2 +Dt^3
Where ABCD are different values for different compound.

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What is the Density of Steel?

Akash

• Apr 26th, 2018

Mass divided volume is for density

Anietie Udoh

• Jun 30th, 2017

8.05g/cm3 or 8050kg/m3

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