Method capable of improving viscosity of catalytic cracking slurry oil

Abstract

The invention provides a method capable of improving the viscosity of catalytic cracking slurry oil, belonging to the technical field of catalytic cracking of petroleum refining. The method is 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 (90.5-92.95): (6-8): (1.05-1.5); emulsified oil obtained by emulsifying directly enters a catalytic device for a catalytic reaction; andthe 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 1.6 MPa to 1.7 MPa and atemperature of 200 DEG C to 220 DEG C are maintained in the emulsifying device at the same time. The method provided by the invention enables a catalytic cracking raw material to form a stable emulsified solution through the premixer and the emulsifying device with specific pressure and temperature, greatly improves the product distribution of the catalytic device, and enhances the kinematic viscosity of the slurry oil.

Description

technical field [0001] A method for increasing the viscosity of catalytic cracking oil slurry belongs to the technical field of catalytic cracking in petroleum refining. Background technique [0002] Existing methods for increasing the kinematic viscosity of FCC oil slurry mainly include new catalysts, catalytic cracking additives that reduce the yield of oil slurry, and the like. Catalysts and catalytic assistants mainly promote the deep conversion of heavy oil, increase the yield of light oil, and reduce the yield of oil slurry and coke by changing the catalytic reaction mechanism. These are mainly achieved through chemical methods to increase the kinematic viscosity of oil slurry. [0003] After the existing emulsified feed, catalytic cracking reaction is carried out. In the prior art, although it has been confirmed by experiments that the catalytic cracking reaction after emulsification can increase the yield of light oil, improve product distribution, and reduce coke y...

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Problems solved by technology

[0004] However, traditional techniques have failed to improve the kinematic viscosity of oil slurry

Moreover, these technologies emulsify catalytic cracking raw materials at normal pressure and low temperature (below 100°C). In industrial production, the preheating temperature of catalytic cracking raw materials is usually high, reaching about 140°C~220°C. It is difficult to form a stable emulsified state at this temperature, and when the emulsified oil formed at normal pressure and low temperature enters the nozzle at the feed temperature of the catalytic device, it is easy to cause pressure fluctuations at the nozzle, which is not good for production

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