System for preparing bio-oil and activated carbon by microwave pyrolysis

Abstract

The invention discloses a system for preparing bio-oil and activated carbon by microwave pyrolysis. The system comprises a microwave pyrolysis reactor, a cyclone separator, a condenser, a coke storage bin, a microwave activation reactor, a gas burner, an activated carbon cooling tower and a nitrogen generator, wherein the microwave pyrolysis reactor is connected with the cyclone separator through a pipeline; a gas outlet in the top of the cyclone separator is connected with the condenser; the bottom of the cyclone separator is connected with the coke storage bin; the bottom of the coke storage bin is connected with a material inlet of the microwave activation reactor; a material outlet of the microwave activation reactor is connected with a feed opening of the activated carbon cooling tower through a pipeline; a gas outlet of the microwave activation reactor is connected with a feed pipeline of the gas burner through a pipeline; a gas outlet of the condenser is connected with the gas burner through a pipeline; a gas outlet pipeline of the gas burner is divided into two paths, wherein one path is connected with the microwave activation reactor, and the other path is connected with a fluidizing gas and spouting gas pipeline of the microwave pyrolysis reactor; a gas inlet of the activated carbon cooling tower is connected with a nitrogen pipeline; a gas outlet of the activated carbon cooling tower is merged into the fluidizing gas and spouting gas pipeline through a pipeline; a material outlet is formed in the bottom of the activated carbon cooling tower. The system is high in biomass pyrolysis rate, can obtain high-yield bio-oil and high-quality activated carbon products, and has a favorable application prospect.

Description

technical field

[0001] The invention relates to a system for producing bio-oil and active carbon by microwave pyrolysis. Background technique

[0002] Biomass has a wide range of sources, abundant reserves, low price and renewable energy, and as the only renewable energy that can be converted into liquid fuel, the carbon dioxide emissions generated during the utilization process are zero, environmentally friendly, and it is a green and environmentally friendly renewable energy. The liquid bio-oil converted from biomass cracking basically does not contain sulfur, nitrogen and metal components, and the gas is rich in CO and H 2 、CH 4 and other combustible components, while the solid is a kind of biomass semi-coke.

[0003] At present, rapid biomass pyrolysis technology can obtain high liquid yield, but the composition is complicated, the oxygen content is high, and the calorific value is low, and the acidity is strong, so further hydrodeoxygenation is required. Pyrolysis ga...

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