Natural Gas

Natural Gas

components
1. C1,C2,C3,C4, H2S, N2,O2, rare gas
terminology
1. wet gas(C>1)
2. dry gas (C1)
3. Unassociated gas(non-oil wells)
4. Associated gas (oil wells)
5. LNG
Unwanted components
1. H2S, CO2, water, N2, O2, He, Radon, Mercaptans, dust
Source
1. Oil and Gas wells
Use of natural gas
1. Domestic
2. commercial
3. electric generation
4. industrial
properties of burning gas
1. Calorific value
2. specific gravity
3. burning velocity
4. Wobbe number
  1. wobbe number=(Calorific Value)/√(Specific Garvity)
critical industrial reactions
1. steam reforming(SR)
  1. CH4 + H2O CO + 3H2 – syn gas
2. water gas shift(WGS)
  1. CO + H2O → CO2 + H2
3. fischer-tropsch chemistry(GTL)
  1. 2nH2 + CO =-(CH2)n- + H2O
4. Ammonia
  1. N2 + 3H = 2NH3
5. Methanol
  1. CO + 2H2 = CH3OH CO2 + 3H2 =CH3OH+H2O
catalysts
1. homogeneous
2. heterogeneous
3. discriptions
  1. conversion
  2. selectivity
  3. yield
  4. turnover number
    1. TOF = (no. of moles of given product) ( no. active sites x time )
4. decay
  1. sintering
  2. attrition
  3. poisoning

Resource summary

	Created by 王久涛 almost 10 years ago