Hydrogenation method for producing motor fuel from biological oil

Abstract

The invention relates to a hydrogenation method for producing motor fuel from biological oil. The hydrogenation method for producing motor fuel from biological oil is characterized in that at least one biological oil is utilized as raw oil; the raw oil and hydrogen orderly pass through a hydrotreatment reactor running at a low temperature and a hydrotreatment reactor running at a high temperature at least under hydrogenation operation conditions; under reaction conditions, active ingredients of a hydrotreatment catalyst comprise one or more of reduced W, Mo, Ni and Co; hydrogenated effluent is separated into a gas phase and a liquid phase; the gas phase is recycled and the liquid phase is fed into a fractionating tower; naphtha, diesel oil and unconverted oil are obtained in the fractionating tower; and a part of the diesel oil and/or a part of the unconverted oil are circulated to a reaction system. Compared with the prior art, the hydrogenation method for producing motor fuel from biological oil can effectively improve storage stability of biological oil as fuel oil and effectively prolong hydrogenation device stability.

Description

Technical field [0001] The invention relates to a hydrogenation method, in particular to a hydrogenation method that uses bio-oil as raw material oil to directly produce motor fuel. Background technique [0002] At present, the global energy is mainly derived from fossil energy, of which petroleum is the most important source of motor fuel. Petroleum is a non-renewable energy source. Not only is the resource increasingly depleted, but it is also becoming increasingly heavy and inferior. The continuous development of the world economy and the increasingly stringent environmental regulations require the production of a large number of light and clean fuels, which require the improvement and improvement of existing refining technologies. While improving, add new petroleum substitutes to produce products that meet the requirements at the lowest cost. [0003] As a renewable resource, bio-oil has received extensive attention from the world, and various research units and enterprises ar...

AI Technical Summary

Problems solved by technology

[0005] EP1741767 and EP1741768 disclose a method for producing diesel fractions from animal and vegetable oils, mainly animal and vegetable oils first undergo hydrogenation, and then pass through an isomerization catalyst bed to obtain low-condensation diesel components, but due to the hydrogenation Water is generated during the process, which has a very adverse effect on the isomerization catalyst, and the device cannot run stably for a long period of time

[0006] In the bio-oil hydrogenation process including the above method, one of the main problems encountered is that the stability of the catalyst is poor, the operation cycle is shortened, and the catalyst needs to be frequently shut down to replace it.

Especially when bio-oil is used as raw material alone or the mixing ratio of bio-oil is high, the operation cycle of the hydrogenation catalyst will be significantly affected, which cannot meet the requirements of industrial applications

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