What is the minimum and maximum load that your delayed coking unit can handle?
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What is the minimum and maximum load that your delayed coking unit can handle? Where is the bottleneck?
3800~4100 tons/day. The main problem is that the heating furnace load is not enough.
The minimum load depends on the minimum radiation amount, and the maximum load depends on the heating furnace load and the coke height of the coke tower. The load elasticity of coking with two furnaces and four towers is much greater through the operation of separate furnaces and combined furnaces.
The processing capacity is 3500-4900t/d. When the processing capacity is low, the fractionation tower capacity is too small and unstable. When the processing capacity is high, the coke tower height is too low. The steam compressor with rich gas capacity is overloaded and the inlet pressure is high. The coke tower pressure is high.
1. Fractionation tower is a major limitation 2. Decoking cycle 3. Control of circulation ratio
Our coking capacity has a minimum load of 350,000 tons/year and a maximum load of 1 million tons/year, which means we have two furnaces and four towers.
70t/h-150t/h When the processing capacity is low, it is mainly due to the large blowing time, the adjustment of the fractionation tower and the balance of the gas pipe network. When the processing capacity is high, the main reason is that the height of the coke tower is too low, and it is easy to flush the tower. The coke height must be accurately estimated.