Method capable of improving gasoline-diesel ratio of catalytic cracking device

Abstract

The invention provides a method capable of improving the gasoline-diesel ratio of a catalytic cracking device, belonging to the technical field of catalytic cracking of petroleum refining. The methodis characterized in that a to-be-catalytically-cracked raw material, water and an emulsifier are mixed through a premixer, and then enter an emulsifying device for emulsifying; the mass ratio of the to-be-catalytically-cracked raw material to the water to the emulsifier is (89.7-91.79): (8.2-10): (0.01-0.3); emulsified oil obtained by emulsifying directly enters a catalytic device for a catalyticreaction; and the conditions of emulsifying in the emulsifying device are as follows: shearing and stirring are performed at a rotating speed of 6000 r/min to 8000 r/min, and a pressure of 1.2 MPa to1.3 MPa and a temperature of 140 DEG C to 150 DEG C are maintained in the emulsifying device at the same time. The method of pretreating a catalytic cracking raw material with high pressure and temperature provided by the invention improves the dispersity and the fogging degree of a catalytic cracking feeding material, improves the depth of cracking, and enhances the gasoline-diesel ratio of the catalytic cracking device.

Description

technical field [0001] The invention discloses a method for increasing the gas-to-diesel ratio of a catalytic cracking unit, which belongs to the technical field of catalytic cracking in petroleum refining. Background technique [0002] Generally, when the catalytic cracking unit implements the production situation of high-yield gasoline, the gasoline yield is mainly increased from the aspects of raw materials, catalysts, reaction depth, and product extraction. The method to improve the gasoline yield by improving the raw material composition is mainly to increase the content of light oil products (such as wax oil) in the raw material, and to reduce the residual oil rich in polycyclic aromatic hydrocarbons, colloids, asphaltenes and other components that are not easily cracked. The blending ratio of coker wax oil. At present, crude oil is becoming more and more inferior, and the oil to be processed by catalytic cracking units is also more difficult to process. This method c...

AI Technical Summary

Problems solved by technology

[0005] However, none of the existing technologies proposes to improve the gas-to-diesel ratio of the product by emulsifying catalytic cracking raw materials.

At the same time, the existing technology is to emulsify the catalytic cracking raw material at normal pressure and lower temperature (below 100°C). In the industrial production process, the preheating temperature of the catalyt

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