Heavy oil hydrogenation upgrading process for coupled cracking and reforming hydrogen production

Abstract

The invention discloses a heavy oil hydrogenation upgrading process for coupled cracking and reforming hydrogen production. The invention relates to a heavy oil hydrogenation upgrading process, the heavy oil hydrogenation upgrading process adopts a coupling process of cracking and reforming hydrogen production and fixed bed catalytic hydrogenation upgrading, can realize independent or simultaneousoperation of a plurality of tubular reactors connected in parallel through a switching valve, and realizes continuous efficient production of catalytic hydrogenation, catalytic desulfurization, catalytic denitrification, catalytic deoxidation and catalyst regeneration. When in use, the characteristics are outstanding, the cracking and reforming hydrogen production process is adopted to replace the traditional water electrolysis hydrogen production process, and hydrogen is produced on site while being used, so that the hydrogen production process is safer and more energy-saving; a fixed bed reactor adopts a single-tube multi-bed design, and can simultaneously realize upgrading reactions such as catalytic cracking, catalytic hydrogenation, catalytic desulfurization, catalytic denitrification, catalytic deoxidation and the like; meanwhile, the device can realize continuous production of independent regeneration of a single-tube catalyst, greatly improves the working efficiency, can realize efficient hydrogenation upgrading of heavy oil such as waste tire pyrolytic oil, oil sand pyrolytic oil, coal pyrolytic oil, waste engine oil, residual oil, turbine engine oil and the like, and hasa very strong application prospect.

Description

technical field [0001] The invention relates to a heavy oil hydrogenation upgrading process, in particular to a heavy oil hydrogenation upgrading process coupled with cracking and reforming to produce hydrogen. Background technique [0002] With the increasing demand for domestic oil resources and foreign dependence and the intensification of domestic crude oil, it is particularly important to vigorously develop alternative or supplementary energy sources for oil. China is also rich in oil shale resources, equivalent to about 47.6 billion tons of shale oil, accounting for 50% of the country's prospective oil reserves, second only to the United States in the world. The liquid product oil shale is obtained through dry distillation and pyrolysis of oil shale, which can be used as a fuel. The distillation range of shale oil is roughly the same as that of crude oil, but the amount of heteroatom compounds such as nitrogen, sulfur, and oxygen is relatively high, especially sulfur-...

AI Technical Summary

Problems solved by technology

The disadvantage of this processing method is that the hydrogenation reaction conditions are harsh, the hydrogen consumption is high, the light components of the obtained oil are low, and the product quality is poor

After refining, it is necessary to add a device for removing nitrogen-containing compounds, and the reaction pressure is high, and the yield of oil is low

For the above heavy oil hydrotreating methods, the catalyst basically adopts conventional crude oil hydrorefining and hydrocracking catalysts. When the heavy oil has high sulfur content and high viscosity, in order to save the cost of upgrading the heavy oil and reduce the amount of hydrogen used, it will cause Catalyst deactivation due to carbon deposits, resulting in higher operating costs, the loss outweighs the gain

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