Help! What are the reasons for high tar content in circulating ammonia water?
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What are the main reasons for high tar content in circulating ammonia water? How should this be solved? Is there a problem with the mechanical ammonia clarification tank? Could someone with experience give me some advice?
The mechanical ammonia clarification tank does not provide good separation
Is the circulating ammonia tank regularly cleaned of tar?
The residence time of circulating ammonia water in the mechanical ammonia clarification tank is short
Analyze factors such as temperature, residence time, oil pressure system and its operation, clarifier volume, and structural design.
The problem is that the mechanical ammonia clarification tank does not perform a good separation task; it is necessary to increase the settling time. Meanwhile, by adding tar when filling the circulating ammonia, the tar content in the remaining ammonia can be reduced
The mechanical ammonia water clarifier is used to separate ammonia water from tar, while tar separation is used to separate tar from tar residues. Generally, the residence time of ammonia water is 20 minutes, and the adjustment of overflow also affects the tar content in the ammonia water.
1. Increasing the downtime, and adding tar during the circulation of ammonia water, can reduce the tar content in the remaining ammonia water. 2. Controlling the temperature of the circulating ammonia water can also help reduce the amount of tar carried along
Light tar or heavy tar? If it’s heavy tar, you need to make sure your mechanical tar-ammonia separator is properly adjusted. If it’s light tar, I would like to ask if your plant is equipped with a gas flotation unit for removing tar Designed by Jiaonai Institute, it uses air flotation to remove the light tar from the surface.
This post was last edited by hao101029 on 2011-12-12 at 20:12: increase the contact time between the circulating ammonia water and raw coal gas, while raising the temperature of the circulating ammonia water to between 72–75 degrees.