A kind of heavy oil treatment process method

Abstract

The invention discloses a heavy oil product treatment processing method. The method comprises a hydrogenation pretreatment device, a solvent deasphalting device, a hydrogenation treatment device and a catalytic cracking device, wherein the hydrogenation treatment device comprises a hydrogenation pretreatment reaction area and a hydrogenation treatment reaction area; the processing method comprises the following steps: residual oil raw material generated oil is subjected to fractional distillation after being reacted through a hydrogenation pretreatment unit to obtain light fraction and heavy fraction, wherein the heavy fraction is treated after entering the solvent deasphalting device so as to obtain deasphalted oil and deoiled asphalt, and the light fraction orderly passes through the hydrogenation pretreatment reaction area and the hydrogenation treatment reaction area which are in series connection after mixing with the deasphalted oil and hydrogen; gas-liquid separation is performed on reaction effluent of the hydrogenation treatment reaction area, and a gas phase is recycled back to the hydrogenation pretreatment reaction area and / or the hydrogenation treatment reaction area; a liquid phase directly enters a catalytic cracking reaction area to perform catalytic cracking reaction, and effluent of the catalytic cracking reaction is separated to obtain dry gas, liquefied gas, catalytic-cracked gasoline fraction, catalytic-cracked diesel fraction, catalytic-cracked heavy cycle oil and catalytic-cracked oil slurry. The stable operation period of the device can be prolonged by use of the method disclosed by the invention.

Description

technical field [0001] The invention relates to a method for lightening heavy oil, in particular to a method for treating heavy oil with a combined process. Background technique [0002] At present, the demand for gasoline, coal, diesel and other oil products, especially the demand for motor gasoline in the domestic and foreign oil product markets will continue to rise, while the demand for heavy fuel oil and other heavy oil products will show a downward trend. At the same time, the properties of crude oil are deteriorating day by day on a global scale, environmental protection regulations are becoming stricter, and increasingly stringent requirements are put forward for the quality of oil products. Therefore, how to realize the lightening of heavy oil and the continuous upgrading of the quality of gasoline and diesel products at a more economical and reasonable cost has become the focus of domestic and foreign refining industries. [0003] The main purpose of the residue o...

AI Technical Summary

Problems solved by technology

This method alleviates the increase in pressure drop by changing the loads of each anti-feed, but cannot fundamentally change the growth trend of the pre-reactor pressure drop. From the point of view of actual industrial operation, once the pressure drop starts to increase, it will quickly reach the design upper limit. Moreover, changing the feeding of each reverse inlet is not conducive to the stable operation of the device.

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