Fuels and Combustion

Yield of charcoal in high temperature carbonisation of wood is about _____________ percent?

Byadmin March 7, 2019August 26, 2021

Yield of charcoal in high temperature carbonisation of wood is about _____________ percent?

A. 10
B. 25
C. 50
D. 75

Fuels and Combustion

Preheating of coal charge for the coke ovens reduces the __________________?

Preheating of coal charge for the coke ovens reduces the __________________?

A. Time of carbonisation
B. Yield of gas and tar
C. Fuel consumption in coking
D. All A., B. and C.

Read More Preheating of coal charge for the coke ovens reduces the __________________?
Fuels and Combustion

Low temperature oxidation of coal during storage does not decrease its__________________?

Low temperature oxidation of coal during storage does not decrease its__________________?

A. Oxygen content
B. Caking power
C. Calorific value
D. None of these

Read More Low temperature oxidation of coal during storage does not decrease its__________________?
Fuels and Combustion

Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around ______________ percent?

Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around ______________ percent?

A. 4
B. 96
C. 20
D. 40

Read More Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around ______________ percent?
Fuels and Combustion

Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than _______________ °C is liable to form clinker?

Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than _______________ °C is liable to form clinker?

A. 1100
B. 1250
C. 1350
D. 1400

Read More Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than _______________ °C is liable to form clinker?
CHEMICAL ENGINEERING | Fuels and Combustion

Calorific value of of blast furnace gas is around __________ KCal/Nm3.

Question: Calorific value of of blast furnace gas is around __________ KCal/Nm3.
[A].

850
[B].
1800
[C].
4200
[D].
6500

Answer: Option A

Explanation:

No answer description available for this question.

Read More Calorific value of of blast furnace gas is around __________ KCal/Nm3.
CHEMICAL ENGINEERING | Fuels and Combustion

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

Question: 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

Answer: Option A

Explanation:

No answer description available for this question.

Read More Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an __________ bed gasifier.