Two-stage microwave tandem catalytic pyrolysis device for waste oil

Abstract

The invention relates to a two-stage microwave tandem catalytic pyrolysis device for waste oil. The device comprises a feeder, a microwave absorbent bed layer, a double-port quartz reaction bottle, afirst-stage microwave pyrolysis device, a quartz catalytic tube, a catalyst bed layer, a second-stage microwave catalytic device, a bio-oil collection device, a condensation system, a suck-back prevention device, a gas washing device, a gas flow monitoring device, a sucking pump and a gas collection device. After the microwave absorbent bed layer reaches the target pyrolysis temperature, materialsare added into a double-port quartz reaction bottle through a feeder for rapid pyrolysis, generated pyrolysis steam is subjected to catalytic reforming through a catalyst bed layer, and then enters acondensation system to be condensed into bio-oil, the non-condensable gas enters the suck-back preventing device, and the gas washing device, the gas flow monitoring device and the sucking pump in sequence and is finally collected by the gas collecting device. According to the method, rapid pyrolysis of the waste oil is realized, the bio-oil yield is increased, the catalytic effect can be improved, coking deactivation of the catalyst is slowed down, and the service life of the catalyst is prolonged.

Description

technical field [0001] The invention relates to the field of resource utilization of waste oil, in particular to a device for catalytically pyrolyzing waste oil with two-stage microwave serial connection. Background technique [0002] The rapid consumption of fossil fuels has made energy security a major challenge. In recent years, the research on the conversion of waste oil to hydrocarbon-rich fuel has become increasingly active. The oil industry is an important part of my country's grain, oil and food industry, and plays a very important role and position in the national economy. In the process of eating and processing animal and vegetable oils, waste oils are inevitably produced. The rapid development of the global economy has greatly improved people's living standards, and the output of waste oil has also increased dramatically. In 2019, the theoretical output of edible vegetable oil in my country alone was as high as 60 million tons, and the total amount of waste oil...

AI Technical Summary

Problems solved by technology

This will lead to the accumulation of ash generated by the pyrolysis of waste oil on the surface of the catalyst, resulting in irreversible deactivation of the catalyst

At the same time, limited by the same microwave oven cavity, the pyrolysis and catalytic temperatures cannot be precisely adjusted separately, which is not conducive to the control and optimization of the catalytic pyrolysis process

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