Delayed coking method
A delayed coking method and coking tower technology, which are applied in the field of non-catalytic thermal cracking, can solve the problems of long coke production cycle of delayed coking unit, reduction of the treatment capacity of the absorption stabilization part, and large treatment capacity of the absorption stabilization part, so as to reduce the load and reduce the Energy consumption, the effect of reducing equipment size
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Embodiment 1
[0021] The first-stage condensation scheme of the 1.3 million tons / year delayed coking unit of the existing technology is adopted, and the oil gas at the top of the fractionation tower is cooled to 40°C.
Embodiment 2
[0023] The first-stage condensation scheme of the 1.3 million tons / year delayed coking unit of the existing technology is adopted, and the oil gas at the top of the fractionation tower is cooled to 80°C.
Embodiment 3
[0025] For the 1.3 million tons / year delayed coking unit secondary condensation scheme of the present invention, such as figure 2 As shown, the delayed coking products are fractionated in the fractionation tower 1, and the oil gas at the top of the fractionation tower is cooled to 90°C by the air cooler 2 at the top of the fractionation tower, and then enters the first-stage oil-gas separation tank 4 at the top of the fractionator, and the first-stage coked naphtha 10 is separated. The gasoline pump 9 sends out the device, and the separated gas enters the secondary oil-gas separation tank 11 at the top of the fractionating tower after being cooled to 40°C by the aftercooler 3 at the top of the fractionating tower, and the gas separated from the secondary oil-gas separation tank 11 at the top of the fractionating tower is used as The rich gas 6 enters the absorption stabilization system, and the separated naphtha passes through the naphtha pump 7 to the absorption tower.
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