Method for clean utilization of inferior heavy oil

Abstract

The invention provides a method for clean utilization of inferior heavy oil. The inferior heavy oil comprises but is not limited to one or more of atmospheric pressure residual oil, vacuum residual oil, catalytic cracking slurry oil, visbreaking heavy oil, coal tar, shale oil and oil sand asphalt oil. According to the method for clean utilization of the inferior heavy oil, suspended bed hydrogenation, oil hydrogen production, metal recovery and catalyst preparation are organically combined, the inferior heavy oil can be completely utilized to the maximum extent, waste can be turned into valuable things, the processing cost is reduced, and clean utilization of the inferior heavy oil is achieved.

Description

technical field [0001] The invention relates to the field of petrochemical technology, in particular to a method for clean utilization of inferior heavy oil. Background technique [0002] In recent years, crude oil has become increasingly heavy and inferior, and environmental protection requirements have become increasingly stringent. How to use limited oil resources cleanly and efficiently to meet the growing market demand for light and middle distillates has become a challenge for the petroleum processing industry in the world today. important task. Due to its high conversion rate of heavy oil, strong adaptability of raw materials, and clean products, the suspended bed hydrogenation process is widely used in the fields of low-quality heavy oil, residual oil, coal tar hydrogenation, and kerosene co-refining. , The attention of coal chemical companies. [0003] The reaction temperature of the suspended bed hydrogenation process is high, and the condensation and coking of m...

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Problems solved by technology

[0007] The above-mentioned technologies are all suspended bed processes in which the raw material oil and the catalyst are uniformly mixed, which can lighten the inferior heavy oil, but the above-mentioned technologies still have the following deficiencies: 1) The mixing method of the catalyst and the raw material oil is complicated, and a uniform mixture can be obtained only after two times of mixing. Slurry catalyst; 2) The utilization of unconverted oil is unreasonable, and no proper destination can be found; 3) The selection or use of catalyst is not optimized enough

The use of water-soluble and oil-soluble catalysts is expensive, and the economic benefits of the device cannot be brought into play. The addition of solid powder catalysts is large, and the ensuing equipment wear problem limits the long-term operation of the process; 4) a large amount of feed oil and catalysts The enrichment of metals in unconverted oil cannot be recycled, which not only causes waste of resources, but also causes serious environmental pollution

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