Light olefin cracking equipment and cracking method
A technology for low-carbon olefins and equipment, which is applied to the cracking of low-carbon olefins and the field of low-carbon olefins cracking equipment, can solve the problem that crude oil cannot be directly used as a raw material for cracking, and achieve the effect of saving process costs and reducing coking.
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[0090] Adopt the light olefin cracking equipment provided by the invention (as figure 1 shown) for the cleavage reaction. The low-carbon olefin cracking equipment includes a fan 1 , a convection section 2 , a radiation section 5 , a quench boiler 6 , a reboiler 7 , a separation tower 8 , a condenser 9 , and a decompression device 10 .
[0091] First, start the decompression device 10, and control the pressure of the equipment at 5KPa, so that the equipment is in a negative pressure state; the crude oil after removal is gasified and preheated through the convection section 2, and then enters the radiant section furnace tube 3 for cracking reaction; The combustion system of radiant section 5 adopts the combination of bottom burner and side wall burner, the heat supply ratio of the bottom burner is 80%, and the burner uses oxygen-enriched air for combustion, and the oxygen concentration in the oxygen-enriched air is 30% (V / V). The preheating temperature of crude oil in the con...
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