Sources of Process Wastes 2321 Emissions

The process of coke making emits particulate matters, volatile organic compounds (VOCs), carbon monoxide, and other pollutants. The various sources of emissions include the following:

1. Fugitive particulate emissions during material handling (coal preparation)

2. Significant emissions of particulate matter and VOCs due to oven charging

3. VOC emissions from distillation within the oven during the coking cycle from leaks in the doors, charge lids, and offtake caps

4. Particulate emissions due to pushing of coke from the oven into the quench car

5. Particulate from the coke mass during coke quenching

6. Trace organic compounds and dissolved solids from the quench water entrained in the steam plume rising from the tower

7. Emissions from the underfire or combustion stack due to combustion of gas in the coke oven flues

8. VOC emissions from the processing steps for separating ammonia, coke oven gas, tar, phenol, light oils, and pyridine from the foul gas

FIGURE 2.2 Coke-making flow diagram. (From U.S. EPA, Development Document for Final Effluent Limitations Guidelines and Standards for the Iron and Steel Manufacturing Point Source Category, EPA-821-R-02-004, U.S. EPA, Washington, DC, 2002.)

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