Which of the following coal gasification processes will produce gas having maximum methane content?

Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about __________ °C.

A

400-500

B

900-1000

C

1400-1500

D

1700-1800

Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction?

A

2CO ⟷ C + CO₂

B

CO + H₂O ⟷ CO₂ + H₂

C

C + H₂O ⟷ CO + H₂

D

C + 2H₂O ⟷ CO₂ + 2H₂

Which of the following is a single stage, fixed bed high pressure coal gasification process?

A

Winkler process

B

Kopper-Totzek process

C

Lurgi Process

D

None of these

High pressure coal gasification is employed in __________ process.

A

Lurgi

B

Kopper-Totzek

C

Winkler

D

None of these

High temperature in gasification of coal favours

A

High production of CO₂

B

Low production of CO₂

C

High production of CO

D

Both B and C

Which of the following oil gasification processes is non-catalytic?

A

Semet-Solvay process

B

Segas process

C

Onia-Gegi process

D

Steam reforming of naphtha

A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon

A

Is less liable to spontaneous combustion on storage

B

Is more difficult to ignite and produces a shorter flame

C

Requires smaller combustion space and less secondary air

D

None of these

Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.

A

1000

B

4000

C

6000

D

8000

Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent.

A

15 to 25

B

35 to 45

C

55 to 75

D

75

Mineral matter content (M) and ash content (A) in coal are approximately related as

A

M = 1.1A

B

M = A

C

M = 1.5A

D

M = 2A

Which of the following coal gasification processes will produce gas having maximum methane content?

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