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Device and method for coproducing bio-oil and biochar from solid waste through efficient microwave depolymerization

A technology for solid waste and bio-oil, applied in the field of waste resource utilization, can solve the problems of lack of microwave thermal cracking device, lack of two-stage catalytic device, etc., to reduce oxygen content, improve quality, realize clean and cyclic production and utilization Effect

Active Publication Date: 2018-05-04
临沂市新大环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lack of professional microwave pyrolysis devices, especially the lack of two-stage catalytic devices that can precisely control the products of microwave pyrolysis processes.

Method used

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  • Device and method for coproducing bio-oil and biochar from solid waste through efficient microwave depolymerization
  • Device and method for coproducing bio-oil and biochar from solid waste through efficient microwave depolymerization
  • Device and method for coproducing bio-oil and biochar from solid waste through efficient microwave depolymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 10g of corn stalks are crushed into a particle size of 0.5-2mm, and placed in a cracking reactor 8 composed of 80% recrystallized silicon carbide and 20% iron oxide material; the HZSM-5 zeolite catalyst with a particle size of 2mm is placed In the catalytic reactor 10 made of recrystallized silicon carbide, a helium gas flow rate of 50 mL / min was introduced to remove the air in the reaction system. Turn on the electric heating and heat preservation device 13, the temperature is 250°C, open the gas valve 14, and then turn on the microwave generation system, the microwave frequency is 2.45GHz, the microwave power is 200W, react for 10 minutes, and then feed methanol reaction gas with a flow rate of 1mL / min , open the condensed water in the condensation pipe 15, control the temperature to be 2°C, add a dry ice acetone bath in the secondary bio-oil collection device 17, close the gas valve 14, adjust the microwave power to 800W, and the cracking reactor 8 is heated up to 550...

Embodiment 2

[0048] Taking the waste plastic raw material as an example to introduce the implementation process of the present invention is as follows:

[0049] 10g of waste plastics is crushed into a particle size of 2-5mm, and placed in a cracking reactor 8 composed of 90% recrystallized silicon carbide and 10% copper oxide material; the SBA-15 zeolite catalyst with a particle size of 5mm is placed In the catalytic reactor 10 made of recrystallized silicon carbide, a helium gas flow rate of 300 mL / min was introduced to remove the air in the reaction system. Turn on the electric heating and heat preservation device 13, the temperature is 350°C, open the gas valve 14, and then turn on the microwave generation system, the microwave frequency is 2.45GHz, the microwave power is 400W, react for 5 minutes, and then feed the methane reaction gas with a flow rate of 20mL / min , open the condensed water in the condensation pipe 15, control the temperature at 5°C, add a dry ice acetone bath in the s...

Embodiment 3

[0051] Taking the papermaking sludge raw material as an example to introduce the implementation process of the present invention is as follows:

[0052] 10g of papermaking sludge is pulverized into a particle size of 0.5-3mm, and placed in a cracking reactor 8 composed of 85% recrystallized silicon carbide and 15% magnesium oxide; the HY zeolite catalyst with a particle size of 10mm is placed in In the catalytic reactor 10 made of recrystallized silicon carbide, a helium gas flow rate of 100 mL / min was introduced to remove the air in the reaction system. Turn on the electric heating and heat preservation device 13, the temperature is 300°C, open the gas valve 14, and then turn on the microwave generation system, the microwave frequency is 2.45GHz, the microwave power is 300W, react for 5 minutes, and then feed the formaldehyde reaction gas with a flow rate of 10mL / min , open the condensed water in the condensation pipe 15, control the temperature to be 3°C, add a dry ice aceto...

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Abstract

The invention discloses a device and a method for coproducing bio-oil and biochar from solid waste through efficient microwave depolymerization. The device comprises a gas inlet system for providing reaction gas and carrier gar, wherein an outlet end of the gas inlet system is connected with a preheating system, an outlet end of the preheating system is connected with a thermal-insulation filtration system, an outlet end of the thermal-insulation filtration system is connected with a reaction system, an outlet end of the reaction system is connected with a product collecting system, a productthermal insulation system is arranged on a pipeline between the reaction system and the product collecting system, and the outer sides of the preheating system, the thermal-insulation filtration system and the reaction system are sleeved with a microwave generation system. Solid waste can be converted into high-value liquid product bio-oil and solid product pyrolytic carbon in an efficient reduction, harmless and recycling manner with a two-stage conversion method of microwave depolymerization and catalytic pyrolysis.

Description

technical field [0001] The invention belongs to the field of resource utilization of waste, and in particular relates to a device and method for efficient microwave depolymerization of solid waste to co-generate bio-oil and bio-char. Background technique [0002] In recent years, human activities have led to a sharp increase in the discharge of various types of waste, including industrial waste, agricultural waste, forestry waste, domestic waste, urban and paper sludge, waste rubber, waste tires, etc. The effective utilization rate of these wastes is low, and the traditional incineration and landfill can no longer meet the increasingly stringent environmental protection requirements. Therefore, it is particularly critical to seek efficient conversion and effective utilization of waste resources. [0003] Due to its advantages such as wide adaptability of raw materials, fast processing speed, and clean and pollution-free processing process, pyrolysis technology has become one...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00
CPCC10G1/002
Inventor 王文亮李新平时宇杰党泽攀王少华唐宁
Owner 临沂市新大环保科技有限公司
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