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

Abstract

The invention relates to a hydro-upgrading 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 in a reaction state, the active component of a hydrogenation catalyst used in a first stage and a second stage is one or more selected from the group consisting of W, Mo, Ni and Co in a reduction state. Compared with the prior art, the method provided by the invention can effectively improve storage stability of biolipid as a fuel oil and can effectively prolong stability of a hydrogenation apparatus.

Description

technical field

[0001] The invention relates to a hydrogenation method, in particular to a hydrogenation upgrading method for directly producing 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, bio-oil has been widely valued in the world, and various research...

Examples

Embodiment Construction

[0024] The method of the present invention is specifically as follows: using one or several mixed oils in the bio-grease as the raw material oil, under the hydrogenation operation condition, the raw material oil and hydrogen pass through the low-temperature and high-temperature hydrogenation reactors filled with catalysts, and the obtained hydrogenated The hydrogen-generated oil is recycled in the gas separated by the high-pressure separator (referred to as high fraction), and can also be discharged from the system. The obtained liquid fractionation is mixed with hydrogen and enters the second-stage reaction zone containing a hydrogenation-modifying catalyst with isomerization performance to obtain The gas separated from the hydrogenation and upgrading stream in the high-pressure separator (referred to as high fraction) can be recycled, and can also be discharged from the system, and the liquid can be fractionated to obtain the following products: one or more of gas, naphtha, an...

technical field

[0001] The invention relates to a hydrogenation method, in particular to a hydrogenation upgrading method for directly producing 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, bio-oil has been widely valued in the world, and various research...

Examples

Embodiment Construction

[0024] The method of the present invention is specifically as follows: using one or several mixed oils in the bio-grease as the raw material oil, under the hydrogenation operation condition, the raw material oil and hydrogen pass through the low-temperature and high-temperature hydrogenation reactors filled with catalysts, and the obtained hydrogenated The hydrogen-generated oil is recycled in the gas separated by the high-pressure separator (referred to as high fraction), and can also be discharged from the system. The obtained liquid fractionation is mixed with hydrogen and enters the second-stage reaction zone containing a hydrogenation-modifying catalyst with isomerization performance to obtain The gas separated from the hydrogenation and upgrading stream in the high-pressure separator (referred to as high fraction) can be recycled, and can also be discharged from the system, and the liquid can be fractionated to obtain the following products: one or more of gas, naphtha, an...

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