Hydrogenation method for producing high quality motor fuel by biolipid

Abstract

The present invention relates to a hydrogenation method for producing a high quality motor fuel by biolipid. The method comprises that: one or a plurality of materials in the biolipid are adopted as raw material oil; under a hydrogenation operating condition, the raw material oil and hydrogen gas pass through at least two hydrogenation reactors, wherein the raw material oil and the hydrogen gas firstly pass through the low temperature operation hydrogenation reactor, and then pass through the high temperature operation hydrogenation reactor; under the reaction state, the active component of a hydrogenation catalyst is reduced into the reduced-state Pt and / or the reduced-state Pd; the hydrogenated effluent is separated into a gas phase and a liquid phase, wherein the gas phase is recycled, and the liquid phase enters a fractionating tower; the liquid phase is fractionated in the fractionating tower to obtain naphtha, diesel oil and unconverted oil, wherein the partial diesel oil and / or the partial unconverted oil circularly returns to the reaction system. Compared to the prior art, with the method of the present invention, the storage stability of the biolipid can be effectively improved when the biolipid is adopted as the fuel oil, the stability of the hydrogenation device can be effectively prolonged, and the industrial application value of the biolipid hydrogenation technology can be improved.

Description

technical field [0001] The invention relates to a hydrogenation method, in particular to a hydrogenation method for directly producing high-quality 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 resea...

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 short, and the catalyst needs to be frequently shut down to replace the catalyst

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

Images