Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces __________________?

Related Mcqs:

1. A coal gasifier operating at 20 atm. (e.g. Lurgi gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having _____________________?

   A. Higher methane content and thus higher calorific value
   B. Higher carbon monoxide content
   C. Lower carbon dioxide content
   D. None of these

2. Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an ______________ bed gasifier?

   A. Entrained
   B. Moving
   C. Fixed
   D. Fluidised

3. Gas yield in the Kopper-Totzek coal gasifier is about ______________ Nm3/ton coal (ash = 35%)?

   A. 150
   B. 1500
   C. 3500
   D. 5000

4. Kopper-Totzek coal gasifier_________________?

   A. Can give ammonia synthesis gas (H2 + N2)
   B. Is a moving bed reactor
   C. Cannot use coking coal
   D. Operate at very high pressure

5. Lurgi coal gasifier is a pressurised ______________ bed reactor?

   A. Moving
   B. Fixed
   C. Fluidised
   D. Entrained

6. In Lurgi coal gasifier___________________?

   A. Coking coals cannot be used
   B. Low carbon conversion efficiency is achieved
   C. Entrainment of solids is higher
   D. Larger quantity of coal can be processed

7. Main constituents of purified Lurgi gas are___________________?

   A. H2, CmHn & CO2
   B. CO, H2 & CH4
   C. CO2, O2 & CO
   D. N2, H2 & CO2

8. Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300°) may be reduced by about ______________ percent as compared to the use of atmospheric combustion air?

   A. 5
   B. 10
   C. 20
   D. 35

9. Coal tar fuels (CTF) as compared to petroleum based fuel oils have higher __________________?

   A. Calorific value
   B. Higher C/H ratio
   C. Sulphur content
   D. Difference in gross & net calorific value

10. ombustion of pulverised coal compared to the lumpy coal __________________?

    CA. Provides better control of furnace temperature
    B. Facilitates combustion with lower excess air
    C. Provides higher thermal efficiency & flame temperature
    D. All A., B. & C.