Hydrogenation method for production of low-condensation point motor fuel from biolipid

Abstract

The invention relates to a hydrogenation method for production of a low-condensation point motor fuel from biolipid. The method comprises the following steps that: biolipid is used as raw oil, and the raw oil and hydrogen pass through a first-stage hydrogenation reaction zone under hydrogenation operation conditions, wherein the first-stage hydrogenation reaction zone comprises at least two hydrogenation reactors, and the raw oil and hydrogen pass through one reactor operated at a low temperature at first and then pass through the other reactor operated at a high temperature; a material flow generated in hydrogenation is separated, obtained hydrogen-rich gas is recycled, and obtained liquid enters into a second-stage hydro-upgrading reaction zone; and a material flow generated in hydro-upgrading is separated, obtained side hydrogen is recycled, and an obtained liquid product is subjected to fractionation so as to obtain naphtha and low-condensation point diesel oil, wherein a sulfur-containing substance is supplemented to reaction materials so as to maintain the content of hydrogen sulfide in circulation gas. Compared with the prior art, the method provided by the invention can produce the low-condensation point motor fuel while guaranteeing activity stability of a catalyst and long-period stable running of an apparatus.

Description

technical field [0001] The invention belongs to a production method of renewable energy, and relates to a hydrogenation method, in particular to a hydrogenation method for directly producing low-freezing-point motor fuel by using biological oil as raw material oil. Background technique [0002] At present, the energy on a global scale mainly comes from fossil energy, among which petroleum is the most important source of motor fuel. Petroleum is a non-renewable energy source. Not only are the resources increasingly depleted, but also the quality and inferiority are intensifying. The continuous development of the world economy and increasingly stringent environmental protection regulations require the production of a large amount of light and clean fuels, which require the existing refining technology to be improved and improved. While improving, new oil substitutes are added to produce products that meet the requirements at the lowest cost. [0003] As a renewable resource, ...

AI Technical Summary

Problems solved by technology

However, when producing low-condensing-point diesel fractions, it has the disadvantages of short catalyst operation period, etc.

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