Natural gas combined cycle and combustion turbine , Chemistry

Assignment Help:

Natural gas, which we can assume is 100% methane, is combusted to generate electricity at a power plant.  This is becoming increasingly popular as an NGCC process (Natural Gas Combined Cycle).  In this process, the gas is burned in a turbine similar to a jet engine which produces electricity. The heat coming out of the gas turbine boils water which can be used to turn a steam turbine. This increases the overall electricity generation efficiency.  The final step in making this process 21st century environmentally friendly is to compress the CO2 and store it underground.

a.  In this process, 100 mol/hr of natural gas is 100 % combusted in a stream of pure 35 % excess oxygen. After exiting the combustion turbine at 1 atm and some temperature, the hot gases enter a heat exchanger where they are used to boil the water for a steam turbine. The gases exit the heat exchanger at 40o C and 1 atm. What is the temperature of the stream leaving the combustion turbine if there are 320.5 degrees of superheat? Note: You must use atomic species balances to solve for all of the reactive species. Failure to do so will result in no credit for this part of the problem.

b.  Assuming the company uses extra drying techniques to remove the rest of the water and the remaining oxygen, we now have a pure stream of CO2 to compress and sequester underground.  Assuming we hold the temperature at 40o C and increase the pressure to 400 atm, by how much have we changed the volume?

c.  Why does this process use pure oxygen rather than air?

 


Related Discussions:- Natural gas combined cycle and combustion turbine

Deodorants - chemical in cosmetics, Deodorants: Just as the name sugges...

Deodorants: Just as the name suggests, deodorants are applied basically to mask the body odour. The body odour provides from the bacterial action subsequent perspiration. Hence

Why electrolysis of aqueous solution of nacl, Explain why electrolysis of a...

Explain why electrolysis of aqueous solution of NaCl gives H 2 at cathode and Cl 2 at anode. Write overall reaction

Ions, How can you find the formula for a specific ion?

How can you find the formula for a specific ion?

Degree of freedom, F of NH4Cl->NH3 +HCl when p(NH3)not =p(HCl) F of KClO3->...

F of NH4Cl->NH3 +HCl when p(NH3)not =p(HCl) F of KClO3->KCl +O2 KClO3=solid &KCl=solid & other are in gas. PLEASE REPLY TODAY(NEED TO COMPLETE THE ASSIGNMENT)

Define enable the acquisition of powers of observation, Define Enable the A...

Define Enable the Acquisition of Powers of Observation I.  PURPOSE OF THE EXPERIMENT The purpose of the experiment is to enable the acquisition of powers of observatio

Bohr''s radius can have, Bohr's radius can have: (1) Discrete values ...

Bohr's radius can have: (1) Discrete values (2)  +ve values (3) - ve values (4) Fractional values Ans: +ve values

Bridging group in nomenclature compounds, Q. Bridging group in nomenclature...

Q. Bridging group in nomenclature compounds? A bridging group is indicated by putting the Greek letter 'p' immediately before its name and separated by hyphens from other ligan

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd