PPT - Preparation Of Coke In Coke Ovens Plants | Chemical Technology - Chemical Engineering PDF Download

 Page 1


PRESENTATION ON PREPARATION OF COKE                                                                              
By:-
SUKESH KUMAR
B.TECH 4
TH
YEAR
METALLURGICAL &                       
MATERIALS ENGG.
PREAPARATION OF COKE IN COKE OVENS  BATTERIES
Page 2


PRESENTATION ON PREPARATION OF COKE                                                                              
By:-
SUKESH KUMAR
B.TECH 4
TH
YEAR
METALLURGICAL &                       
MATERIALS ENGG.
PREAPARATION OF COKE IN COKE OVENS  BATTERIES
• The main function of Coke Ovens is to convert coal into coke which is used as a fuel and reducing agent in the 
Blast Furnace. Its secondary function is to recover Volatile Matter and CO gas from coal and extract chemicals 
known as Coal Chemicals. CO gas produced is used for heating purposes in the plant.
Contents:
1.Introduction to coal.
2.Analysis of coal.
3.Sampling of coal.
4.Construction of coke ovens.
5.Analysis of coke oven gas.
6.Charging of coal in the empty coke ovens.
7.Conversion of coal into coke.
8.By-product of coal.
7.Discharging of coke from coke ovens and cooling of coke.
8.Testing &analysis of coke.
9.Coke sorting.
Page 3


PRESENTATION ON PREPARATION OF COKE                                                                              
By:-
SUKESH KUMAR
B.TECH 4
TH
YEAR
METALLURGICAL &                       
MATERIALS ENGG.
PREAPARATION OF COKE IN COKE OVENS  BATTERIES
• The main function of Coke Ovens is to convert coal into coke which is used as a fuel and reducing agent in the 
Blast Furnace. Its secondary function is to recover Volatile Matter and CO gas from coal and extract chemicals 
known as Coal Chemicals. CO gas produced is used for heating purposes in the plant.
Contents:
1.Introduction to coal.
2.Analysis of coal.
3.Sampling of coal.
4.Construction of coke ovens.
5.Analysis of coke oven gas.
6.Charging of coal in the empty coke ovens.
7.Conversion of coal into coke.
8.By-product of coal.
7.Discharging of coke from coke ovens and cooling of coke.
8.Testing &analysis of coke.
9.Coke sorting.
INTRODUCTION TO COAL
Coal is a combustile black or brownish –black sedimentary rock composed mostly of carbon and hydrogen.
Coal contents:
1. Organic mass--complex  mixture of organic compounds of carbon(C), hydrogen(H
2
), nitrogen(N
2
), oxygen(O
2
) & 
sulphur(S).
2.Inorganic substance--like water & mineral  matter.
A coal having higher volatile matter content has lower ignition tempr.
Mineral matter (M) content & Ash(A) content in coal are approximately related as M=1.1A
Life of formation of Coal:
Wood--->Peat--->Lignite--->Bituminious---> Anthracite--->Graphite
Rank of coal:
1.Peat:--Peat is light brown in colour containing 90% moisture, 30% O
2
& having calorific value of 4500kcal/kg.
2.Lignite:--Lignite is deep brown in colour   containing 60%moisture ,20% O
2
.
3.Bituminious:--Bituminious is black in colour containing less than 10% moisture ,5% O
2 
having calorific value of 
7000kcal/kg,& flame is yellow.
Page 4


PRESENTATION ON PREPARATION OF COKE                                                                              
By:-
SUKESH KUMAR
B.TECH 4
TH
YEAR
METALLURGICAL &                       
MATERIALS ENGG.
PREAPARATION OF COKE IN COKE OVENS  BATTERIES
• The main function of Coke Ovens is to convert coal into coke which is used as a fuel and reducing agent in the 
Blast Furnace. Its secondary function is to recover Volatile Matter and CO gas from coal and extract chemicals 
known as Coal Chemicals. CO gas produced is used for heating purposes in the plant.
Contents:
1.Introduction to coal.
2.Analysis of coal.
3.Sampling of coal.
4.Construction of coke ovens.
5.Analysis of coke oven gas.
6.Charging of coal in the empty coke ovens.
7.Conversion of coal into coke.
8.By-product of coal.
7.Discharging of coke from coke ovens and cooling of coke.
8.Testing &analysis of coke.
9.Coke sorting.
INTRODUCTION TO COAL
Coal is a combustile black or brownish –black sedimentary rock composed mostly of carbon and hydrogen.
Coal contents:
1. Organic mass--complex  mixture of organic compounds of carbon(C), hydrogen(H
2
), nitrogen(N
2
), oxygen(O
2
) & 
sulphur(S).
2.Inorganic substance--like water & mineral  matter.
A coal having higher volatile matter content has lower ignition tempr.
Mineral matter (M) content & Ash(A) content in coal are approximately related as M=1.1A
Life of formation of Coal:
Wood--->Peat--->Lignite--->Bituminious---> Anthracite--->Graphite
Rank of coal:
1.Peat:--Peat is light brown in colour containing 90% moisture, 30% O
2
& having calorific value of 4500kcal/kg.
2.Lignite:--Lignite is deep brown in colour   containing 60%moisture ,20% O
2
.
3.Bituminious:--Bituminious is black in colour containing less than 10% moisture ,5% O
2 
having calorific value of 
7000kcal/kg,& flame is yellow.
4.Anthracite:--Anthracite is also black in colour containing2% O
2 
having calorific value of 8000-
8500kcal/kg,&flame is bliush yellow .
Decrease in oxygen and volatile matter content result in increase in carbon content
i.e 30% for wood to almost 100% for anthracite.
Caking index of coal is a measure of its agglutinating(binding) property Highly caking coals produces strong 
coke.Caking index of coal blend used for blast furnace coke making is about 22.
Page 5


PRESENTATION ON PREPARATION OF COKE                                                                              
By:-
SUKESH KUMAR
B.TECH 4
TH
YEAR
METALLURGICAL &                       
MATERIALS ENGG.
PREAPARATION OF COKE IN COKE OVENS  BATTERIES
• The main function of Coke Ovens is to convert coal into coke which is used as a fuel and reducing agent in the 
Blast Furnace. Its secondary function is to recover Volatile Matter and CO gas from coal and extract chemicals 
known as Coal Chemicals. CO gas produced is used for heating purposes in the plant.
Contents:
1.Introduction to coal.
2.Analysis of coal.
3.Sampling of coal.
4.Construction of coke ovens.
5.Analysis of coke oven gas.
6.Charging of coal in the empty coke ovens.
7.Conversion of coal into coke.
8.By-product of coal.
7.Discharging of coke from coke ovens and cooling of coke.
8.Testing &analysis of coke.
9.Coke sorting.
INTRODUCTION TO COAL
Coal is a combustile black or brownish –black sedimentary rock composed mostly of carbon and hydrogen.
Coal contents:
1. Organic mass--complex  mixture of organic compounds of carbon(C), hydrogen(H
2
), nitrogen(N
2
), oxygen(O
2
) & 
sulphur(S).
2.Inorganic substance--like water & mineral  matter.
A coal having higher volatile matter content has lower ignition tempr.
Mineral matter (M) content & Ash(A) content in coal are approximately related as M=1.1A
Life of formation of Coal:
Wood--->Peat--->Lignite--->Bituminious---> Anthracite--->Graphite
Rank of coal:
1.Peat:--Peat is light brown in colour containing 90% moisture, 30% O
2
& having calorific value of 4500kcal/kg.
2.Lignite:--Lignite is deep brown in colour   containing 60%moisture ,20% O
2
.
3.Bituminious:--Bituminious is black in colour containing less than 10% moisture ,5% O
2 
having calorific value of 
7000kcal/kg,& flame is yellow.
4.Anthracite:--Anthracite is also black in colour containing2% O
2 
having calorific value of 8000-
8500kcal/kg,&flame is bliush yellow .
Decrease in oxygen and volatile matter content result in increase in carbon content
i.e 30% for wood to almost 100% for anthracite.
Caking index of coal is a measure of its agglutinating(binding) property Highly caking coals produces strong 
coke.Caking index of coal blend used for blast furnace coke making is about 22.
ANALYSIS OF COAL
1.Proximate analysis :--Proximate analysis of coal is estimation of the moisture content ,ash content ,volatile matter 
content & free carbon content .
free carbon=100-(%v.m+%ash+moisture).
2.Ultimate analysis:-Ultimate analysis of coal is estimation of fixed carbon, sulphur,oxygen ,nitrogen ,hydrogen.