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

A technology of activated carbon and bio-oil, which is applied in the direction of bio-fuel, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of affecting the yield of bio-oil, complicated process, complicated equipment, etc., and achieves accelerated separation of bed body, short activation temperature, Overcoming the effect of small particle size

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of gradient heating is a kind of medium-slow pyrolysis, which will affect the yield of bio-oil, and the water-soluble pyrolysis oil adopts the method of biotransformation, which causes problems such as complicated equipment and complicated process.

Method used

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Turn on the microwave generator D (10 microwave windows) of the guided spout fluidized bed, and the microwave power density is 10×10 5 W / m 3 , Introduce spout gas from spout gas inlet Q1 and fluidization gas inlet Q2 respectively (in which spout gas is derived from gas guide tube B), fluidization gas (through gas distribution plate M, aperture 0.2mm, opening rate 10%) to make The bed material in the reactor is in a partially spouted fluidized state, the fluidizing gas velocity is 0.1m / s, and the spouting gas velocity is 0.15m / s. At the same time, the bed material silicon carbide (0.5mm) absorbs the microwave and heats up rapidly, and then a small amount of Sawdust (5mm) is fed into the reactor to conduct heat and mass transfer with silicon carbide to make the temperature of reactor A reach the pyrolysis temperature of 500℃. At this time, adjust the spray gas velocity to 0.3m / s and reduce the microwave power density to 5× 10 5 W / m 3 . After the temperature reaches equilib...

Embodiment 2

[0039] Turn on the microwave generator D (10 microwave windows) of the guided spout fluidized bed, and the microwave power density is 10×10 5 W / m 3 , From the spouting gas inlet Q1 and fluidizing gas inlet Q2 (where the spouting gas is derived from the gas guide tube B), fluidizing gas (through the gas distribution plate M, aperture 0.2mm, opening rate 10%) to make the reactor The bed material is in a local spouting fluidization state, the fluidization gas velocity is 0.15m / s, the spouting gas velocity is 0.25m / s, and the bed material silicon nitride (0.5mm) absorbs microwaves to rapidly heat up, and then a small amount of wood chips (10mm ) It is fed into the reactor and undergoes heat and mass transfer with silicon nitride to make the temperature of reactor A reach the pyrolysis temperature of 550℃. At this time, adjust the spray gas velocity to 0.4m / s and reduce the microwave power density to 8×10 5 W / m 3 . After the temperature reaches equilibrium, the sawdust material is dr...

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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...

Claims

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Application Information

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IPC IPC(8): C10B53/02C10B49/22C10B49/10C10B57/00C10G1/00C01B31/08C01B31/10C01B32/336
CPCC01B32/39C10B51/00C10B53/02C10B57/00C10G1/00C10G2300/1011Y02E50/10
Inventor 王鑫李政张全乔凯王领民
Owner CHINA PETROLEUM & CHEM CORP
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