Abstract：
The adoption of boardscraping coal tar remover setup for purifying the surplus ammonia water produced during the coking which uses the 4.3 m and 5.3 m stampcharging coke oven has many problems, such as the tar content is high after purification, the flow rate fluctuates, and the pH value is unstable. Therefore the requirements of water purifying process cannot be met. Based on the technological retrofit, through adding a tarammonia water sedimentation separator and automatic control equipment in the purification process of surplus ammonia water, the difficult problems mentioned above can be resolved successfully.
2012, Vol. 29 
