Method of raising liquid yield during delayed coking
A delayed coking and liquid technology, applied in the field of delayed coking, can solve problems such as poor sales, low yield of liquid products, and low coke value, and achieve the effect of reducing coke yield and increasing yield
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[0018] Example 1
[0019] Such as figure 1 As shown, the tube is used to transport the vacuum residue. After the coking raw material I is preheated by the convection section of the heating furnace 1, it enters the buffer tank 2, and then enters the radiant section of the heating furnace 1 by the pump 3 to be heated to the coking temperature, and then enters the coking tower 4 / 5 Coking. The coking gasoline obtained by fractionation in the fractionation tower 6 is used as the vaporizer II and injected before the distillate of the heating furnace 1 enters the coking tower. The coking oil and gas enters the fractionation tower 6 through the 4 / 5 overhead pipeline of the coking tower, and fractionated to obtain gas III and distillate oil ( Gasoline IV, diesel V, light wax oil VI and heavy wax oil VII), fractionation tower 6 wax oil can enter buffer tank 2 through pump 7 for circulation, and the circulation ratio is arbitrarily adjustable in the range of 0 to 0.6...
Example Embodiment
[0020] Example 2
[0021] Compared with Embodiment 1, the difference lies in that this embodiment injects hydrogenated coking gasoline as an evaporator during the coking process. The test results are shown in Table 1.
Example Embodiment
[0022] Example 3
[0023] Compared with Example 1, the difference lies in that in this example, ethanol is injected as an evaporator during the coking process. The test results are shown in Table 1.
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