Bio-oil utilization method based on component separation and system used for bio-oil utilization method

Abstract

The invention relates to a bio-oil utilization method based on component separation and a system used for the bio-oil utilization method. The method comprises the following steps: bio-oil is extracted, n extracted and separated water-phase component is gasified a to obtain a gasified gas, an extracted and separated extract liquid is distilled under a reduced pressure to obtain an extractant and abio-oil oil phase component, the extractant is reused, and the bio-oil oil phase component is subjected to high-temperature pyrolysis treatment to obtain a carbon material or catalytic conversion to obtained a chemical raw material. The components with different characteristics in the bio-oil are separated, and used respectively in suitable manners to realize the efficient utilization of the bio-oil; at the same time, considering the oil phase component in the bio-oil easily causes catalyst inactivation due to carbon deposit, and the oil phase component has a large molecular weight and is difficult to be completely cleaved into small molecules, so that the oil phase component is separated and used alone, the water phase component is gasified, and deactivation of a Pt / C catalyst and inefficient use of the oil phase component can be avoided.

Description

technical field [0001] The invention relates to the technical field of bio-oil utilization, in particular to a bio-oil utilization method based on component separation and a system used therefor. Background technique [0002] Biomass is the only carbon-containing renewable resource, which has the characteristics of cleanness, regeneration, wide distribution and carbon neutrality, and has the application prospect of replacing fossil energy. The development of biomass energy utilization technology is conducive to optimizing my country's energy supply structure and alleviating increasingly severe environmental problems. [0003] Biomass has the characteristics of dispersed raw materials, small collection radius, and high transportation and storage costs. Using pyrolysis technology, biomass can be converted into biomass pyrolysis oil (bio-oil), gas and biomass coke, achieving a 95% utilization rate of raw materials. Rapid pyrolysis of biomass to produce bio-oil is a very promis...

AI Technical Summary

Problems solved by technology

However, the components of bio-oil are complex, and the chemical properties of different parts vary greatly, and a single utilization method cannot realize the efficient utilization of all components in bio-oil

For example, small molecular components are beneficial to the reformation of gaseous fuels, and the macromolecular compounds in them are easy to cause problems such as rapid catalyst deactivation and reactor blockage; macromolecular compounds can be used to prepare carbon materials, while small molecular components are here low utilization during

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