Device for microwave-assisted double bed layer catalysis of fast pyrolysis of biomass

A pyrolysis and microwave technology, which is applied in the preparation of liquid hydrocarbon mixtures, the petroleum industry, and the treatment of hydrocarbon oil, etc., can solve the problems of low catalyst utilization efficiency, low bio-oil yield, slow heating rate, etc., to reduce secondary heat hydrolysis reaction, improving the quality of bio-oil, increasing the yield and quality

Inactive Publication Date: 2018-02-09
NANCHANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

As an emerging technology, microwave-assisted thermal pyrolysis has outstanding advantages in the field of biomass conversion to produce renewable energy, but there are still defects such as low bio-oil yield, high oxygen content, and low calorific value.
[0003] In the biomass thermal pyrolysis process, the main problems

Method used

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  • Device for microwave-assisted double bed layer catalysis of fast pyrolysis of biomass

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1.

[0018] A microwave-assisted dual-bed catalytic rapid pyrolysis device for biomass, consisting of a feeder 1, a feed port 2, a microwave pyrolysis instrument 3, a double-ported quartz reaction bottle 4, a quartz cup 5, and a microwave absorbent bed 6 , heat insulation block 7, catalyst bed 8, quartz wool 9, K-type thermocouple 10, gas outlet 11, U-shaped condenser pipe 12, condensed water 13, glass container 14, condenser pipe 15, air guide pipe 16, air pump 17 , The biological oil collection port 18 is formed.

[0019] The feeder 1 is connected to the feed port 2, and the bottom of the feed port 2 is connected to the inlet of the double-port quartz reaction bottle 4, and the double-port quartz reaction bottle 4 is placed in the quartz cup 5 filled with the microwave absorber bed 6, and the quartz cup 5 is placed In the microwave pyrolysis instrument 3, an insulating block 7 is placed at the bottom of the quartz cup 5, a catalyst bed 8 and quartz wool 9 are...

Example Embodiment

[0021] Example 2.

[0022] like figure 1 As shown, add 6kg silicon carbide into the quartz cup, 50g HZSM-5 molecular sieve catalyst (diameter 5mm, Si / Al=50, specific surface area 640m 2 / g) placed on the catalyst bed, embed the two-necked quartz bottle in a quartz cup equipped with a microwave absorber, place it in a microwave pyrolysis instrument, turn on the air pump so that the vacuum degree of the reaction system is 100 mm Hg, and fix the power Raise the temperature to 550°C, turn on the feeder switch and quickly add 100g of bamboo chips to the quartz reaction bottle, continue to maintain the catalytic pyrolysis at 550°C until the reaction is complete, and collect the bio-oil product from the bio-oil collection port.

Example Embodiment

[0023] Example 3.

[0024] like figure 1 As shown, add 6kg silicon carbide into the quartz cup, 50g HZSM-5 molecular sieve catalyst (diameter 5mm, Si / Al=50, specific surface area 640m 2 / g) placed on the catalyst bed, embed the two-necked quartz bottle in a quartz cup equipped with a microwave absorber, place it in a microwave pyrolysis instrument, turn on the air pump so that the vacuum degree of the reaction system is 100 mm Hg, and fix the power Raise the temperature to 550°C, turn on the feeder switch and quickly add 100g of rice straw to the quartz reaction bottle, continue to maintain the catalytic pyrolysis at 550°C until the reaction is complete, and collect the bio-oil product from the bio-oil collection port.

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Abstract

A device for microwave-assisted double bed catalysis of fast pyrolysis of biomass includes a feeder, a microwave absorbent bed, a double-port quartz reaction flask, a catalyst bed, a condensing systemand a suction pump. After the temperature of the microwave absorbent bed reaches target temperature, a material is fed into the dual-port quartz reaction flask from a feed inlet through the feeder. Generated pyrolysis vapor passes through the catalyst bed under the action of the suction pump for catalytic reforming, and then enters the condensing system to condense into bio-oil, and the bio-oil is collected at a collection port. The device can realize microwave assisted catalysis of the rapid pyrolysis of the biomass, and reduces the carbonization process of the biomass in a low temperature stage, the defects that a catalyst is easy to passivate and inactivate caused by mixing of the catalyst and a material can be completely avoided, and the utilization efficiency of the catalyst is effectively improved. The suction pump is used, and is beneficial to increase the yield and quality of the bio-oil.

Description

technical field [0001] The invention relates to a device for utilizing renewable energy, in particular to a device for microwave-assisted pyrolysis of biomass. Background technique [0002] Nowadays, the energy crisis and the deterioration of the environment make the development of renewable energy become the focus of people's attention. Among them, biomass has the advantages of rich content, clean and renewable, and carbon neutral, and is the best raw material for the production of renewable and clean energy. As an emerging technology, microwave-assisted thermal pyrolysis has outstanding advantages in the field of biomass conversion to produce renewable energy, but there are still defects such as low bio-oil yield, high oxygen content, and low calorific value. [0003] In the process of biomass thermal pyrolysis, the main problems are slow heating rate and low catalyst utilization efficiency. The slow heating rate will cause the biomass raw material to stay in the low tem...

Claims

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Application Information

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IPC IPC(8): C10G1/00
CPCC10G1/00C10G2300/1011
Inventor 王允圃刘玉环戴磊磊段邓乐周跃陈诺余桢婷姜林曾子鸿吴秋浩张志林张淑梅
Owner NANCHANG UNIV
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