Production of coal tar on industrial scale
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Transcript of Production of coal tar on industrial scale
Production of Coal Tar on Industrial Scale
What is Coal Tar?
Coal Tar is a brown black liquid of extremely high viscosity.
How Coal Tar Derived
It is a by-product obtained during the carbonization of coal to make coke.
It is also derived from the gasification of coal to make coal gas.
Production Process of Coal tar
Coke Oven
70% solids
Blast Furnace Coke
1200-1400 lb
Coke Breeze100-200 lb
1 Ton of Coal yields
30% gas and liquid
Coke-Oven gas9500-11500 cu.ft
Tar 8-12 galAmmonium Sulphate 20-28 lb
Ammonia Liquor 15-35 galLight oil 2.5- 4 gal
Carbonization of Coal
The coke production involves the process of coal carbonization at high temperature (1100 ˚C) under the oxygen deficient environment to concentrate the carbon.
The commercial carbonization process is categorized into two processes: By-product Coke production Non-Recovery/ Heat Recovery Coke production
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In By-product coke production process Coal tar is obtained as a by-product.
While in Non-Recovery Coke making process no by-products are recovered.
By-Product Coke Production
‘Coke side’ of a By-Product Coke Oven Battery
The process of By-Product Coke production comprises of different steps which are as follows: Step-1: Before carbonization, the selected coals from
specific mines are blended, pulverized, and oiled for proper bulk density control.
Step-2: The blended coal is charged into a number of slot type ovens wherein each oven shares a common heating flue with the adjacent oven.
Step-3: Coal is carbonized in a reducing atmosphere and the off-gas is collected and sent to the by-product plant where various by-products like coal tar, light oil, etc. are recovered.
Availability of Coal Tar in Pakistan
Some local and international suppliers of Coal tar are listed in the following tables:
Local SuppliersSupplier’s
NameCountry/ Region
Status Experience Since
F.O.B Price
Min. Order Quantity
Payment Terms
Steel Mill Pakistan Verified - Rs.49,500/ ton
- -
Chagalas International
Pakistan Unverified 1993 N.A. 19 M.ton/ M.tons
L/C
Random Sequence
Pakistan Unverified 1999 N.A. 100 M.ton/Mtons
L/C, T/T, Western Union, Money gram
A.K. Lubricants
Pakistan Unverified - N.A. 100Mtons/ M.Tons
L/C
CHEMPOLY Trading
Pakistan Unverified 1999 US $450-700/M.ton
100Mtons/ M.Tons
T/T
International suppliers
Supplier’s Name
Product Country/ Region
Status Experience Since
F.O.B Price
Min. Order
Quantity
Payment Terms
Qunbang Product
Company ltd.
liquid Crude coal tar
China Verified 2007 US $420 - 600 / Ton
20 Ton/Tons
T/T, Western Union
Tianjin Tiger
International Trade Co.,
Ltd.
High quality
China Verified 2007 - - T/T
Booboone Crude Coal Tar
United State
Verified - - 50 Ton/Tons
T/T
Egyptian Economic
Center
Crude Coal Tar
Egypt Verified 1989 - 20 Ton/Tons
L/C
The details of the suppliers and their products are also available on the internet.