Just replace the new pipes and elbows less than half a month, the pipes are wear off too, so do not go to replace the new ones any more.with helpless, We only patch with steel plate in pipe , But wear will be happened in other places within 1 day, patch scars everywhere.
The wear solutions of fly ash pipeline and elbow is as below:
1. Reduce the air pressure when blowing ash, which can not only reduce wear and tear, but also save energy. This method can indeed extend the life of the ash pipeline a little, but this can not solve the problem fundamentally.
2. Make a square box around the pipe, fill the cement or add castings inside, the cost is not high. The method is not different from patching, it can only be used in small areas, not be solved the problem in bulk.
The latest recommended method is as below:
wear problem of ash removal pip is serious, the choice of pipe material is very important . we need to use wear-resistant materials (for example, ceramic composite pipe elbow, ceramic patch pipe elbow, bimetallic composite pipe elbow, etc.).
Ceramic patch pipe use temperature within 120 ℃, bimetallic composite tube can also be used, but the cost is much higher, and thicker, it is recommended to use ceramic composite pipe and ceramic elbow, the use of temperature is 650 ℃ with ceramic elbow, It is not easy to aging and not off.
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If wear and tear occurs within 1 month, then it is may the problem of the design, such as ash gas is relatively low, ash the speed of gas mixture is faster, check the diameter of actual inner diameter with the entire pipe and find if it is the same with the design. Under normal circumstances, the radius of the elbow is designed according to the technology, to increase the elbow turning radius can reduce the wear in a certain degree.