Natural gas combined cycle and combustion turbine , Chemistry

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?

 

Posted Date: 2/14/2013 11:39:34 PM | Location : United States







Related Discussions:- Natural gas combined cycle and combustion turbine , Assignment Help, Ask Question on Natural gas combined cycle and combustion turbine , Get Answer, Expert's Help, Natural gas combined cycle and combustion turbine Discussions

Write discussion on Natural gas combined cycle and combustion turbine
Your posts are moderated
Related Questions

The sulphate of a metal has the formula M 2 (SO 4 ) 3 .   The formula for its phosphate will be: (1) M(HPO 4 ) 2                                           (2) M 3 (PO

Anionic Detergent - Types of Detergent Long chain alcohols are utilized in the manufacture of few of the synthetic anionic detergents. The comprehensive chain alcohols are trea

The magnetic quantum number specifies : (1) Size of orbitals (2) Shape of orbitals (3) Orientation of orbitals (4) Nuclear stability Ans:   Orientation of orbitals

what is addition,substitution,rearrangement,elimination reactions?

Q. Explain Lead chamber process? Lead chamber process, is the older of the two processes. In this process SO 2 , is produced by burning S or roasting pyrites.   S + O 2 -



Types of polymerization  Sol. Types of polymerization: polymerization is a process in which the joining together of many small molecules to form very large molecule called po

Chemical properties of Tri-halides - Oxidation  Phosgene is very poisonous gas. To use chloroform as an anaesthetic agent, it is required to save the reaction. The specified tw