Microwave-assisted catalytic biomass and waste plastic co-pyrolysis poly-generation device

By designing a co-pyrolysis multi-generation device for microwave-assisted catalytic biomass and waste plastics, integrating the catalytic pyrolysis and catalyst regeneration processes, the problems of low catalytic efficiency and high energy consumption in the existing technology are solved, and the efficient and low-energy consumption of carbon, oil and gas are achieved, and the service life of the catalyst is extended.

CN222540707UActive Publication Date: 2025-02-28SOUTH CHINA UNIV OF TECH
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Patent Information

Application Number
CN202421100258.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-20
Publication Date
2025-02-28
Estimated Expiration
2034-05-20

AI Technical Summary

Technical Problem

The existing carbon-oil and gas polygeneration technology has problems such as low catalytic efficiency and high energy consumption. The traditional heating method leads to uneven heating of materials and the catalyst is prone to deactivate.

Method used

A microwave-assisted catalytic biomass and waste plastic cogeneration device was designed to integrate the catalytic pyrolysis cogeneration and catalyst regeneration processes, and use microwaves as heat source to achieve faster and even heating, and improve catalytic efficiency through catalyst regeneration.

Benefits of technology

It improves the reaction heat efficiency, reduces energy consumption, realizes efficient co-pyrolysis of biomass and waste plastics, produces high-quality carbon, oil and gas fuel, and realizes catalyst regeneration, extending the service life of the catalyst.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a microwave-assisted catalytic biomass and waste plastic co-pyrolysis poly-generation device. The device comprises a microwave pyrolyzing furnace, a catalytic reforming area, a catalyst regeneration area, a regenerated catalyst storage area and a collecting device, carrier gas and materials can be introduced into the microwave pyrolyzing furnace; the catalytic reforming area is connected with a pyrolysis gas outlet of the microwave pyrolysis furnace, and a catalyst with double functions of catalyzing and absorbing microwaves can be placed in the catalytic reforming area; the catalyst regeneration area is connected with the catalytic reforming area; the regenerated catalyst storage area is connected with the catalyst regeneration area and the catalytic reforming area so as to store a regenerated catalyst and provide the catalyst for the catalytic reforming area; the microwave pyrolyzing furnace and the catalytic reforming area are both connected with the collecting device. The microwave-assisted biomass and waste plastic co-pyrolysis poly-generation device can be used for microwave-assisted catalysis of co-pyrolysis poly-generation of biomass and waste plastic and regeneration of a catalyst, so that the catalysis efficiency and the energy utilization rate are improved, and the problem of energy shortage is relieved by reasonably and effectively utilizing biomass and waste plastic resources.
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Description

Technical Field

[0001] The utility model relates to the field of catalytic pyrolysis, and in particular to a microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device. Background Art

[0002] As people's living standards continue to improve, energy consumption and waste generation are increasing. On the one hand, fossil energy is becoming increasingly depleted, and on the other hand, incomplete energy utilization leads to mountains of waste. These two problems make the efficient and rational use of energy urgent. The resource utilization of organic solid waste (waste biomass, waste plastics, etc.) has become an effective means to partially replace fossil energy. Its resources are abundant, but the technology for conversion and utilization is still immature. Therefore, exploring better means of conversion and utilization of organic solid waste is the direction that many researchers are working towards.

[0003] The co-pyrolysis technology of oxygen-rich biomass and hydrogen-rich plastics has attracted widespread attention because it can be converted into high-quality bio-oils (hydrocarbons, sugars, aldehydes, furans, etc.) in a directional manner. The co-pyrolysis technology of biomass and plastics is a process in which biomass and plastics are heated under anaerobic conditions to cause molecular decomposition to produce biochar, bio-oil and biogas. Among them, the charcoal, oil and gas co-generation technology can maximize the comprehensive utilization of organic solid waste and is a more promising technology. The product quality of the currently used charcoal, oil and gas co-generation technology is not high, the energy conversion and utilization rate is low, and the power consumption of fuel molding is high.

[0004] Chinese invention patent CN 110437858 A provides a method and device for rapid pyrolysis of domestic waste with microwave-assisted catalysis and a regenerative catalyst. The biogas collected by the device is not separated but used for combustion, resulting in high energy consumption and low efficiency, and the function of cogeneration of charcoal, oil and gas is not achieved.

[0005] The traditional heating method is to heat the material by transferring heat from the outside to the inside based on the principles of heat conduction, convection and radiation. The heating is uneven, which makes the material prone to local overheating.

[0006] HZSM-5 is often used in catalytic pyrolysis reactions. Although it can improve the quality of bio-oil to a certain extent, HZSM-5 has a small pore size, and has a large diffusion resistance for macromolecular reactions, and reactants are easily coked and deactivated on its surface. In addition, HZSM-5 has poor microwave absorption performance, and microwave absorbers need to be added in microwave-assisted pyrolysis, which is also prone to uneven temperatures and catalyst deactivation. Moreover, in conventional biomass pyrolysis technology, material catalytic pyrolysis and catalyst regeneration are carried out separately, and the reaction efficiency is low. Utility Model Content

[0007] In order to solve the problems of low catalytic efficiency and high energy consumption in the existing charcoal, oil and gas co-production technology, the utility model provides a microwave-assisted catalytic biomass and waste plastic co-pyrolysis co-production device, which is a continuous reaction device that integrates catalytic pyrolysis co-production and catalyst regeneration processes. It uses microwaves as a heat source and guides heat supply according to the location and temperature requirements of different reaction zones, which is beneficial to improving reaction efficiency and reducing energy consumption.

[0008] In order to achieve the purpose of the utility model, the utility model provides a microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device, including a microwave pyrolysis furnace, a catalytic reforming zone, a catalyst regeneration zone, a regenerated catalyst storage zone and a collection device;

[0009] The carrier gas and materials can be introduced into the microwave pyrolysis furnace;

[0010] The catalytic reforming zone is connected to the pyrolysis gas outlet of the microwave pyrolysis furnace, and a catalyst having dual functions of catalysis and microwave absorption can be placed in the catalytic reforming zone;

[0011] The catalyst regeneration zone is connected to the catalytic reforming zone and is used to receive the deactivated catalyst and regenerate the catalyst. The deactivated catalyst after catalysis is regenerated in the catalyst regeneration zone by microwave heat treatment;

[0012] The regenerated catalyst reserve zone is connected to both the catalyst regeneration zone and the catalytic reforming zone to store the regenerated catalyst and provide catalyst to the catalytic reforming zone;

[0013] The microwave pyrolysis furnace and the catalytic reforming zone are both connected to the collecting device.

[0014] The material is pyrolyzed in a microwave pyrolysis furnace, and pyrolysis gas and biochar are produced after pyrolysis. The pyrolysis gas enters the catalytic reforming zone and is catalytically cracked. The biochar and the pyrolysis gas after catalytic cracking are received by a collection device.

[0015] Furthermore, it also includes a feeder connected to the feed inlet of the microwave pyrolysis furnace. The material enters the microwave pyrolysis furnace through the feeder.

[0016] Furthermore, the microwave pyrolysis furnace is provided with an air inlet, through which carrier gas is introduced into the microwave pyrolysis furnace to provide an oxygen-free environment and carrier gas for pyrolysis of the material.

[0017] Furthermore, the bottom plate of the microwave pyrolysis furnace is an openable movable layer plate, and the biochar collection device is connected to the microwave pyrolysis furnace through the movable layer plate. When feeding, the movable layer plate is closed, and the material is pyrolyzed on the movable layer plate. After pyrolysis, the movable layer plate is opened and the biochar enters the biochar collection device. After the movable layer plate is closed, the feeder continues to feed.

[0018] Further, the catalytic reforming zone and the catalyst regeneration zone are connected via a first valve, and the catalytic reforming zone and the regenerated catalyst reserve zone are connected via a second valve.

[0019] After the catalyst is deactivated in the catalytic reforming zone, the first valve is opened, and the first valve is closed after the deactivated catalyst enters the catalyst regeneration zone, and the deactivated catalyst is calcined in the catalyst regeneration zone; at this time, the second valve is opened, and the catalyst in the regenerated catalyst reserve zone enters the catalytic reforming zone, and the second valve is closed after the catalyst fills the catalytic reforming zone; after the deactivated catalyst in the catalyst regeneration zone is regenerated, it enters the regenerated catalyst reserve zone through a screw feeder for storage.

[0020] Furthermore, the first valve and the second valve are both adiabatic valves.

[0021] Furthermore, it also includes a screw feeder, and the catalyst regeneration zone is connected to the regenerated catalyst storage zone through the screw feeder.

[0022] The catalyst regeneration zone is used to collect the deactivated catalyst in the catalytic reforming zone and regenerate it through microwave heat treatment. The regenerated catalyst reserve zone is used to collect and store the regenerated catalyst. A screw feeder is set between the catalyst regeneration zone and the regenerated catalyst reserve zone so that the deactivated catalyst can be added to the regenerated catalyst reserve zone through the screw feeder after regeneration, and then return to the catalytic reforming zone from the regenerated catalyst reserve zone.

[0023] Furthermore, an air inlet is provided on the catalyst regeneration zone so as to better remove carbon deposits when the deactivated catalyst is calcined.

[0024] Furthermore, the catalyst regeneration zone is surrounded by a heat-insulating layer to prevent heat from radiating outward.

[0025] Furthermore, the collection device includes a biochar collection device, a bio-oil collection device and a gas collection device, the biochar collection device is connected to the microwave pyrolysis furnace, the bio-oil collection device is connected to the gas outlet of the catalytic reforming zone, and the gas collection device is connected to the bio-oil collection device.

[0026] Furthermore, it also includes a flue gas outlet pipe and a reforming gas channel, the flue gas outlet pipe is connected to the gas outlet of the catalyst regeneration zone, the bio-oil collection device is connected to the gas outlet of the catalytic reforming zone through the reforming gas channel, and the residual heat of the flue gas in the catalyst regeneration zone is radiated to the reforming gas channel through the flue gas outlet pipe. The residual heat generated in the catalyst regeneration zone can provide auxiliary heat and insulation for the reforming gas to ensure that small molecules in the reforming gas do not undergo polymerization before condensation.

[0027] A catalyst is placed in the catalytic reforming zone, and the pyrolysis gas flows through the catalytic reforming zone and is catalytically cracked. The pyrolysis gas after catalytic cracking enters the bio-oil collection device through the reforming gas channel and is condensed and collected; the non-condensable gas discharged from the bio-oil collection device is collected by the gas collection device.

[0028] Furthermore, an insulation layer is provided on the outer wall of the reformed gas channel, so that the reformed gas is maintained at above 200° C. before entering the bio-oil collection device for condensation, ensuring that small molecules in the reformed gas do not undergo polymerization reaction before condensation.

[0029] Furthermore, the flue gas outlet pipe is in a spiral shape surrounding the reforming gas channel.

[0030] Furthermore, the catalyst in the catalytic reforming zone is SiC supported by HZSM-5 molecular sieve (HZSM-5 / SiC), and the HZSM-5 / SiC has the dual functions of catalysis and microwave absorption.

[0031] The above-mentioned method of the utility model for continuous catalytic pyrolysis of biomass and waste plastics and catalyst regeneration using the microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device with regenerative catalyst comprises the following steps:

[0032] 1) introducing gas into the microwave pyrolysis furnace to ensure an oxygen-free environment for pyrolysis;

[0033] 2) First, the catalytic reforming zone is heated to 450-550°C to activate the catalyst; and the microwave pyrolysis furnace is heated to 450-650°C;

[0034] 3) The material from the feeder enters the microwave pyrolysis furnace, and after pyrolysis in the microwave pyrolysis furnace, pyrolysis gas and biochar are generated. The pyrolysis gas flows upward into the catalytic reforming zone, where it is catalytically cracked. The pyrolysis gas after catalytic cracking enters the bio-oil collection device through the reforming gas channel to be condensed and collected, and the non-condensable gas enters the gas collection device to be collected;

[0035] 4) Open the lower movable layer plate of the microwave pyrolysis furnace, and discharge the biochar into the biochar collection device;

[0036] 5) After the catalyst in the catalytic reforming zone is deactivated, it enters the catalyst regeneration zone, where the deactivated catalyst is calcined at 700°C to 900°C for 3 to 5 hours to burn off the carbon deposits and regenerate the deactivated catalyst; the regenerated catalyst is sent to the regenerated catalyst reserve area through a screw feeder, and the catalytic reforming zone is replenished after the deactivated catalyst is discharged from the catalytic reforming zone next time.

[0037] Microwave heating technology is different from traditional heating methods. Microwave heating technology generates "internal friction heat" through the high-frequency reciprocating motion of dipole molecules inside the heated body, which increases the temperature of the heated material. The heating speed is fast and uniform, and only a few or a few tenths of the energy consumption of traditional heating methods is required to achieve the heating purpose.

[0038] Compared with the prior art, the above technical solutions conceived by the present invention can at least achieve the following technical effects:

[0039] 1. The utility model uses microwave heating to heat the pyrolysis zone, catalytic reforming zone and catalyst regeneration zone. The microwave-assisted heating of the microwave pyrolysis furnace can make the pyrolysis zone, catalytic reforming zone and catalyst regeneration zone reach the control temperature faster, thereby improving the thermal efficiency of the reaction;

[0040] 2. The utility model uses a catalyst with dual functions of catalysis and microwave absorption, without the need to add additional microwave absorbing agents, which can reduce the temperature unevenness problem caused by the catalyst's weak microwave absorption ability to a certain extent and improve the catalytic efficiency;

[0041] 3. The utility model utilizes the excess heat after the high temperature reaction of 700℃~900℃ required for catalyst regeneration, and can radiate heat to the reformed gas channel to improve the energy utilization efficiency;

[0042] 4. The utility model uses waste biomass and waste plastics as raw materials to produce high-quality pyrolysis solid, liquid and gas fuels, and utilizes waste resources to alleviate the increasing shortage of fossil energy and the related environmental problems caused by its use.

[0043] 5. The utility model can directly collect charcoal, oil and gas for subsequent use for different purposes. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of a device for catalyzing the microwave co-pyrolysis of biomass and waste plastics for polygeneration provided in an embodiment of the utility model;

[0045] Figure 2 This is a schematic diagram of a reformed gas channel in an embodiment of the utility model;

[0046] Figure 3 This is a SEM image of the HZSM-5 / SiC bifunctional catalyst in the embodiment of the present utility model. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with specific embodiments.

[0048] like Figure 1As shown, the utility model provides a microwave-assisted catalytic biomass and waste plastic co-pyrolysis multi-generation device, including a feeder 1, a microwave pyrolysis furnace 2, a catalytic reforming zone 4, a catalyst regeneration zone 7, a screw feeder 10, a regenerated catalyst storage zone 6, a bio-oil collection device 11, a gas collection device 12 and a biochar collection device 14.

[0049] The outlet end of the feeder 1 is connected to the lower side wall of the microwave pyrolysis furnace 2. An air inlet is provided near the bottom of the microwave pyrolysis furnace 2. A carrier gas is introduced into the microwave pyrolysis furnace 2 through the air inlet to provide an oxygen-free environment and carrier gas for material pyrolysis. A pyrolysis gas outlet is provided near the top of the other side of the microwave pyrolysis furnace 2. The pyrolysis gas outlet is connected to the catalytic reforming zone 4. The feeder 1 is connected to the feed inlet of the microwave pyrolysis furnace 2 to transport materials to the microwave pyrolysis furnace 2. The materials enter the microwave pyrolysis furnace 2 through the feeder 1. After pyrolysis in the microwave pyrolysis furnace 2, pyrolysis gas and biochar are generated. The pyrolysis gas flows upward and flows out through the pyrolysis gas outlet and then enters the catalytic reforming zone 4. The biochar is discharged downward into the biochar collection device 14 located below the microwave pyrolysis furnace 2.

[0050] One side of the catalytic reforming zone 4 is connected to the pyrolysis gas outlet of the microwave pyrolysis furnace 2, and a reforming gas channel 8 is provided near the lower position on the other side. The outlet of the reforming gas channel 8 is connected to the bio-oil collection device 11. A catalyst is placed in the catalytic reforming zone 4. The pyrolysis gas flows through the catalytic reforming zone 4 and is catalytically cracked. The pyrolysis gas after catalytic cracking enters the bio-oil collection device 11 through the reforming gas channel 8 and is condensed and collected; the other side of the bio-oil collection device 11 is connected to the gas collection device 12, and the non-condensable gas discharged from the bio-oil collection device 11 is collected by the gas collection device 12. ; The catalyst regeneration zone 7 is connected to the bottom of the catalytic reforming zone 4, and the catalyst regeneration zone 7 is used to collect the deactivated catalyst in the catalytic reforming zone 4 and regenerate it through microwave heat treatment; the regenerated catalyst reserve zone 6 is connected to the top of the catalytic reforming zone 4, and the regenerated catalyst reserve zone 6 is used to collect and store the regenerated catalyst; a screw feeder 10 is connected between the catalyst regeneration zone 7 and the regenerated catalyst reserve zone 6, and the deactivated catalyst is added to the regenerated catalyst reserve zone 6 through the screw feeder 10 after regeneration, and then it can return to the catalytic reforming zone 4 from the regenerated catalyst reserve zone 6.

[0051] The bottom of the microwave pyrolysis furnace 2 is provided with a movable layer plate 13. When feeding, the movable layer plate 13 is closed, and the material is pyrolyzed on the movable layer plate 13. After pyrolysis, the movable layer plate 13 is opened to allow the biochar to enter the biochar collection device 14 located below the microwave pyrolysis furnace 2. After the movable layer plate 13 is closed, the feeder 1 continues to feed.

[0052] In some embodiments of the present invention, when the activated carbon reaches a preset amount, the indicator light lights up, and the signal is transmitted to the screw feeder 10, and the screw feeder 10 stops feeding. After the pyrolysis is completed, the movable layer plate 13 opens to both sides, and after the biochar enters the biochar collection device 14, the movable layer plate 13 is closed.

[0053] An air inlet is provided at the bottom of the catalyst regeneration zone 7 so as to better remove carbon deposits when the deactivated catalyst is calcined; the catalyst regeneration zone 7 is surrounded by an insulating layer to prevent heat from radiating outward; a flue gas outlet pipe 9 is provided at the top of the catalyst regeneration zone 7, and the residual heat of the flue gas in the catalyst regeneration zone 7 can be radiated to the reforming gas channel 8 through the flue gas outlet pipe 9, so that the reforming gas is maintained above 200°C before entering the bio-oil collection device 11 for condensation, thereby ensuring that small molecules in the reforming gas do not undergo polymerization reaction before condensation.

[0054] In some embodiments of the present invention, Figure 2 is a schematic diagram of the reformed gas channel 8, as shown in Figure 2 As shown, the flue gas outlet pipe 9 spirally surrounds the reforming gas channel 8, and the high-temperature flue gas radiates to the reforming gas channel 8 through the flue gas outlet pipe 9. A heat-insulating material 15 is provided outside the reforming gas channel 1.

[0055] The catalytic reforming zone 4 and the catalyst regeneration zone 7 are connected by a first valve 3. In some embodiments of the present invention, the first valve 3 is an adiabatic valve. The catalytic reforming zone 4 and the regenerated catalyst storage zone 6 are connected by a second valve 5. In some embodiments of the present invention, the second valve 5 is an adiabatic valve. After the catalyst is deactivated in the catalytic reforming zone 4, the first valve 3 is opened, and the first valve 3 is closed after the deactivated catalyst enters the catalyst regeneration zone 7. The deactivated catalyst is calcined in the catalyst regeneration zone 7. After the deactivated catalyst in the catalyst regeneration zone 7 is regenerated, it enters the regenerated catalyst storage zone 6 for storage through a screw feeder 10. The second valve 5 is opened, and the catalyst in the regenerated catalyst storage zone 6 enters the catalytic reforming zone 4. After the catalyst fills the catalytic reforming zone 4, the second valve 5 is closed.

[0056] The catalyst in the catalytic reforming zone 4 is a catalyst having the dual functions of catalysis and microwave absorption. In some embodiments of the present invention, the catalyst in the catalytic reforming zone 4 is SiC supported by HZSM-5 molecular sieve (HZSM-5 / SiC), and the HZSM-5 / SiC has the dual functions of catalysis and microwave absorption. Its microscopic morphology can be seen in Figure 3 In other embodiments, other catalysts having dual functions of catalysis and microwave absorption may also be used.

[0057] The carrier gas may be nitrogen or an inert gas.

[0058] The method for continuous catalytic pyrolysis of biomass and waste plastics and catalyst regeneration using the device provided in the above embodiment comprises the following steps:

[0059] 1) Introducing inert gas into the microwave pyrolysis furnace 2 to ensure an oxygen-free environment for pyrolysis;

[0060] 2) firstly heating the catalytic reforming zone 4 to 450-550°C to activate the catalyst in the catalytic reforming zone 4; and heating the microwave pyrolysis furnace 2 to 450-650°C;

[0061] 3) The material (such as waste biomass, waste plastic) from the feeder 1 enters the microwave pyrolysis furnace 2, and generates pyrolysis gas and biochar after pyrolysis in the microwave pyrolysis furnace 2. The pyrolysis gas flows upward into the catalytic reforming zone 4, and is catalytically cracked in the catalytic reforming zone 4. The pyrolysis gas after catalytic cracking passes through the reforming gas channel 8 and enters the bio-oil collecting device 11 to be condensed and collected, and the non-condensable gas enters the gas collecting device 12 to be collected;

[0062] 4) When the biochar in the microwave pyrolysis furnace 2 accumulates to a preset amount, the movable layer plate 13 at the bottom of the microwave pyrolysis furnace 2 is opened, and the biochar is discharged downward into the biochar collecting device 14;

[0063] 5) After the catalyst in the catalytic reforming zone 4 is deactivated (in some embodiments of the present invention, the catalyst is replaced every 30 minutes), the deactivated catalyst enters the catalyst regeneration zone 7, and the deactivated catalyst is calcined at 700°C to 900°C in the catalyst regeneration zone 7 for 3 to 5 hours to burn off the carbon deposits, thereby achieving regeneration of the deactivated catalyst; the regenerated catalyst is sent to the regenerated catalyst reserve zone 6 through the screw feeder 10, and the catalytic reforming zone 4 is replenished after the deactivated catalyst is discharged from the catalytic reforming zone 4 next time.

[0064] The implementation methods of the present utility model are not limited to the above-mentioned embodiments, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be considered as equivalent replacement methods and shall be included in the protection scope of the present invention.

Claims

1. A microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device, characterized in that: It comprises a microwave pyrolysis furnace (2), a catalytic reforming zone (4), a catalyst regeneration zone (7), a regenerated catalyst storage zone (6) and a collecting device; A carrier gas and materials can be introduced into the microwave pyrolysis furnace (2); The catalytic reforming zone (4) is connected to the pyrolysis gas outlet of the microwave pyrolysis furnace (2), and a catalyst having dual functions of catalysis and microwave absorption can be placed in the catalytic reforming zone (4); The catalyst regeneration zone (7) is connected to the catalytic reforming zone (4) to receive the deactivated catalyst and regenerate the catalyst; The regenerated catalyst reserve area (6) is connected to the catalyst regeneration area (7) and the catalytic reforming area (4) to store the regenerated catalyst and provide catalyst for the catalytic reforming area (4); The microwave pyrolysis furnace (2) and the catalytic reforming zone (4) are both connected to a collecting device.

2. The microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device according to claim 1, characterized in that: It also comprises a feeder (1), which is connected to a feed port of the microwave pyrolysis furnace (2) to transport materials to the microwave pyrolysis furnace (2).

3. The microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device according to claim 1, characterized in that: An air inlet is provided on the microwave pyrolysis furnace (2).

4. The microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device according to claim 1, characterized in that: The bottom plate of the microwave pyrolysis furnace (2) is an openable movable layer plate (13), and the collection device comprises a biochar collection device (14), and the biochar collection device (14) is connected to the microwave pyrolysis furnace (2) through the movable layer plate (13).

5. The microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device according to claim 1, characterized in that: The catalytic reforming zone (4) and the catalyst regeneration zone (7) are connected via a first valve (3), and the catalytic reforming zone (4) and the regenerated catalyst reserve zone (6) are connected via a second valve (5).

6. The microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device according to claim 1, characterized in that: It also includes a screw feeder (10), and the catalyst regeneration zone (7) is connected to the regenerated catalyst storage zone (6) via the screw feeder (10).

7. The microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device according to claim 1, characterized in that: An air inlet is provided on the catalyst regeneration zone (7).

8. A microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device according to any one of claims 1 to 7, characterized in that: The collecting device comprises a biochar collecting device (14), a bio-oil collecting device (11) and a gas collecting device (12); the biochar collecting device (14) is connected to the microwave pyrolysis furnace (2); the bio-oil collecting device (11) is connected to the gas outlet of the catalytic reforming zone (4); and the gas collecting device (12) is connected to the bio-oil collecting device (11).

9. The microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device according to claim 8, characterized in that: It also includes a flue gas outlet pipe (9) and a reforming gas channel (8), wherein the flue gas outlet pipe (9) is connected to the gas outlet of the catalyst regeneration zone (7), the bio-oil collection device (11) is connected to the gas outlet of the catalytic reforming zone (4) via the reforming gas channel (8), and the residual heat of the flue gas in the catalyst regeneration zone (7) is radiated to the reforming gas channel (8) via the flue gas outlet pipe (9).

10. The microwave-assisted catalytic biomass and waste plastic co-pyrolysis polygeneration device according to claim 9, characterized in that: The outer wall of the reformed gas channel (8) is provided with a heat-insulating layer (15).

Citation Information

Patent Citations

  • Method and device for catalyst-regenerable rapid microwave assisted catalytic pyrolysis of domestic garbage

    CN110437858A