Green, energy-saving and environment-friendly liquid fuel and preparation method thereof

Abstract

The invention relates to a green, energy-saving and environment-friendly liquid fuel and a preparation method thereof. The preparation method comprises the steps that rice bran is subjected to subcritical fluid extraction through a mixed solvent of n-pentane, isobutanol and ethyl acetate, and rice bran oil and residues I are obtained; then introducing the rice bran oil into a reactor containing a catalyst I, and carrying out first catalytic cracking to obtain a gas phase I and a residue II; mixing the residue I and the residue II, carrying out pyrolytic reaction to obtain pyrolysis gas and residue III, discarding the residue III, introducing the pyrolysis gas into a reactor containing a catalyst II, and carrying out secondary catalytic cracking to obtain a gas phase II; and finally, combining the gas phase I and the gas phase II, and condensing. The conversion of the rice bran with a high conversion rate is realized, and the liquid fuel is high in calorific value, low in ash content, green, energy-saving, environment-friendly and high in popularization value.

Description

technical field [0001] The invention belongs to the technical field of new energy, and relates to a green, energy-saving and environment-friendly liquid fuel and a preparation method thereof. Background technique [0002] In recent years, the continuous consumption of oil resources is astonishing. Due to the limited oil resources, its price is also rising with the reduction of reserves, which cannot meet the needs of economic development. Moreover, oil combustion will produce a large amount of exhaust gas, which contains particulate matter, nitrogen oxides and hydrocarbons, etc., causing serious environmental pollution. In order to alleviate dependence on petroleum resources and avoid environmental pollution caused by petroleum combustion, people have invested great enthusiasm in the research of renewable energy, and bio-liquid fuel is a kind of renewable energy that has attracted much attention in recent years. [0003] Bio-liquid fuel is a clean and sustainable recycling ...

AI Technical Summary

Problems solved by technology

The thermochemical conversion method is divided into two methods: direct liquefaction and indirect liquefaction. The former has a complicated process, high energy consumption and difficult to remove the tar produced in the production process. The conversion rate of the latter is relatively low, generally lower than 45w.t.%( by weight of dry matter)

[0004] However, the existing biomass fuels have the problems of incomplete combustion and serious waste, which directly lead to high carbon deposition and low fuel utilization, which has become a major bottleneck restricting the development of current bio-liquid fuels.