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Production of coal tar on industrial scale


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Coal tar production

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Production of coal tar on industrial scale

  1. 1. Production of Coal Tar on Industrial Scale
  2. 2. What is Coal Tar?  Coal Tar is a brown black liquid of extremely high viscosity.
  3. 3. 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.
  4. 4. Production Process of Coal tar Coke Oven 70% solids Blast Furnace Coke 1200-1400 lb Coke Breeze 100-200 lb 1 Ton of Coal yields 30% gas and liquid Coke-Oven gas 9500-11500 cu.ft Tar 8-12 gal Ammonium Sulphate 20-28 lb Ammonia Liquor 15-35 gal Light oil 2.5- 4 gal
  5. 5. 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 cont…..
  6. 6. Cont….  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.
  7. 7. By-Product Coke Production ‘Coke side’ of a By-Product Coke Oven Battery
  8. 8.  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.
  9. 9. Availability of Coal Tar in Pakistan  Some local and international suppliers of Coal tar are listed in the following tables:
  10. 10. Local Suppliers Supplier’s Name Country/ 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
  11. 11. 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 Internationa l 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
  12. 12.  The details of the suppliers and their products are also available on the internet.