GB2618346A - Large microwave powered conveyor system - Google Patents
Large microwave powered conveyor system Download PDFInfo
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- GB2618346A GB2618346A GB2206483.6A GB202206483A GB2618346A GB 2618346 A GB2618346 A GB 2618346A GB 202206483 A GB202206483 A GB 202206483A GB 2618346 A GB2618346 A GB 2618346A
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- microwave
- flow system
- powered flow
- materials
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- 239000000463 material Substances 0.000 claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 14
- 239000000126 substance Substances 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 229920003023 plastic Polymers 0.000 claims abstract description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 7
- QPKOBORKPHRBPS-UHFFFAOYSA-N bis(2-hydroxyethyl) terephthalate Chemical compound OCCOC(=O)C1=CC=C(C(=O)OCCO)C=C1 QPKOBORKPHRBPS-UHFFFAOYSA-N 0.000 claims abstract description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 5
- 239000010453 quartz Substances 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000005977 Ethylene Substances 0.000 claims abstract description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000010521 absorption reaction Methods 0.000 claims abstract description 3
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 3
- 239000011147 inorganic material Substances 0.000 claims abstract description 3
- 239000011368 organic material Substances 0.000 claims abstract description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 3
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 abstract 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000005111 flow chemistry technique Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000011173 biocomposite Substances 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- LKFHUFAEFBRVQX-UHFFFAOYSA-N decanedioic acid;propane-1,2,3-triol Chemical compound OCC(O)CO.OC(=O)CCCCCCCCC(O)=O LKFHUFAEFBRVQX-UHFFFAOYSA-N 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229940031182 nanoparticles iron oxide Drugs 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 229940078499 tricalcium phosphate Drugs 0.000 description 1
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
- C01B21/064—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with boron
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- C01B32/182—Graphene
- C01B32/184—Preparation
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- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/184—Preparation
- C01B32/19—Preparation by exfoliation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/198—Graphene oxide
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- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G39/00—Compounds of molybdenum
- C01G39/06—Sulfides
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/78—Arrangements for continuous movement of material
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/80—Apparatus for specific applications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
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- B09B3/50—Destroying solid waste or transforming solid waste into something useful or harmless involving radiation, e.g. electro-magnetic waves
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/04—Heating using microwaves
- H05B2206/044—Microwave heating devices provided with two or more magnetrons or microwave sources of other kind
Abstract
A microwave powered flow system for producing advanced materials and chemicals at scale comprises at least one high power microwave generator, a waveguide, a crawler transmission unit or conveyor, a microwave reactor and a safety unit. The power of the generator may range from 2-30 kW and may be continuously adjustable. The conveyor may have width of 10-50 cm, length of 5-10 m, and made of materials with low microwave absorption (microwave loss tangent of less than 100 × 10–4), preferably polytetrafluoroethylene (PTFE), quartz or other plastics. The system may produce inorganic materials, e.g. graphene, graphene oxide, molybdenum disulphide (MoS2), boron nitride (BN), and organic materials, e.g. bis(2-hydroxyethyl) terephthalate, ethylene, vinyl chloride, propylene.
Description
Large microwave powered conveyor system
Field of the Invention
The present invention relates to a high microwave power-heated conveyor system, in particular, a microwave-powered flow system for continuous production of advanced materials or chemicals at large scale (>kg/d) with low carbon footprint.
Background
The preparation of materials, especially nanomaterials, functional materials and chemicals at large scale with high reproducibility and stability is a big challenge. Currently these materials are prepared by batch reactors heated by either conventional heating or microwave [1,2], which can not be readily scaled up and more importantly there is an inconsistence between different batches, severely limiting the downstream application of the advanced materials and chemicals. In addition, production of the advanced materials including chemicals in a large batch reactor is also a challenge due to inhomogeneity inside a large reactor [3]. This large batch reactor system is also energy-intensive [3]. There are some reports on microflow system for material synthesis, while the production is at very small scale [4], can not meet the industrial application. Thus to design and build up a flow and energy-efficient system to prepare these advanced materials including chemicals in large quantities is long sought after, which also contributes to a low carbon economy for materials and chemical synthesis. This novel material and chemical production system must have the characteristics of production at scale, short reaction time, high energy efficiency and low carbon footprint.
The present invention has been devised in light of the above considerations.
Summary of the invention
Aspects of the invention are as set out in the independent claims and optional features are set out in the dependent claims.
A first aspect of the disclosure provides a microwave-powered flow system for producing advanced materials and chemicals at scale, including at least one high-power microwave generator, a waveguide, a crawler transmission unit or a conveyor, a microwave reactor and a safety unit.
Optionally, the power of the high-power microwave generator ranges from 2kW to 30 kW, and the power of the high-power microwave generator is continuously adjustable.
Optionally, the microwave-powered flow system comprises two high-power microwave generators configured to be coupled to increase the energy input to the microwave reactor simultaneously.
Optionally, the waveguide is a curved tube made of aluminium with a rectangular crossing section, having a width of 5cm-20cm, a length of 5cm-15cm, and a depth of 100cm to 1000cm.
Optionally, the microwave-powered flow system is configured to generate a continuous flow.
Optionally, the conveyor has a width of 10cm-50cm and length of 5-10 meters, and it is made of materials with low microwave absorption, preferably polytetrafluoroethylene, quartz or other plastics, and the transmission speed ranges from 0.1s/s -5m/s Optionally, the microwave-powered flow system comprises a temperature measurement unit by IR sensor, two microwave suppressors to prevent microwave leaking and water load to absorb extra microwave energy.
Optionally, the conveyor is configured to withhold a temperature of 273k to 523K.
Optionally, the pressure of the microwave reactor is in the range of 1-5 atmospheric pressure, and the volume of the microwave reactor ranges from 5m1 to 100m I. Optionally, the temperature in the microwave reactor is controllable, ranging from 295k to 623K.
Optionally, the chemicals and advanced materials include inorganic materials, preferably high-quality two-dimensional materials, graphene, graphene oxide, M0S2, BN and organic materials, preferably Bis(2-hydroxyethyl) terephthalate, ethylene, vinyl chloride, propylene.
This system is for a microwave-powered chemical process, which can be used for the production of chemicals and advanced materials with the characteristic: 1. a continuous system to provide high quality chemicals and materials of industrial interest. 2. High energy utilization with low carbon footprint 3. The residence time can be controlled by the transmission speed of the crawler or conveyor 4. The reactor can work under from ambient pressure to high pressure, 5 The reactor can also work from low temperature to high temperature.
The novel system is designed including 1 High power microwave generator 2 Waveguide 3 Crawler transmission unit or conveyor 4 Microwave reactor Safety unit * This system can be used to produce high-quality materials, eg. graphene, ceramics, and used for chemical reaction processes, such as rapidly catalytic depolymerisation of plastics (PET, PVC, PP, PE) into valuable chemicals, including monomers, dimers etc at kg/day thanks to the high microwave power generator.
* The microwave reactor is made of microwave-permeable materials, eg. polytetrafluoroethylene, quartz or other plastics, leading to high energy efficiency. At the same time, this system has safety protection. Once there is microwave leakage, it will automatically shut down.
* The crawler transmission unit or the conveyor is made of microwave-permeable materials, eg. polytetrafluoroethylene, or some plastics so it would not be heated up.
Drawings Experiments illustrating the principles of the invention will be discussed with reference to the accompanying figures in which: Figure 1 is an illustration of a first example of a high power microwave generator, coupled with the waveguide, track conveyor unit and safety features (microwave suppressors, water load etc), together with temperature measurement; Figure 2 is an illustration of a first example of a microwave reactor with the safety mechanism to release pressure over 5 atmospheric pressures.
Specific description
Example 1, High quality graphene production This system can quickly prepare high-yield and high-quality graphene and graphene oxides. In a short time of 5-30 seconds, the large power microwave system with a power of 6kW can realize the preparation from graphite or graphene oxides to high-quality graphene of 3-5 gram. One day can produce 12 kg high quality of graphene or graphene oxides. The whole process is pollution-free and the product is defect-free.
Example 2, PTE plastic degradation PTE can be turned into its monomer Bis(2-Hydroxyethyl) terephthalate (BHET) on a catalyst of commercial ZnO by this microwave-powered system. The reaction temperature is 423-493K, and the yield of BHET is 70%-95% in the large microwave power flow system.
References [1] Magdalena Luty-Blocho, Marek Wojnicki, Tomasz Tokarski, Volker Hesse!, Krzysztof Fitzner, Batch Reactor vs. Microreactor System for Efficient AuNP Deposition on Activated Carbon Fibers, Materials (Basel). 2021, 14(21). 6598.
[2] Lau, CC., Qaysi, M Al., Owji, N., Bayazit, MK., Xie, J., Knowles, JC., Tang, J., Advanced biocomposites of poly (glycerol-sebacate) and I3-tricalcium phosphate by in situ microwave synthesis for bioapplication, Materials Today Advances, 2020, 5, 100023.
[3] Lau, C. C., Bayazit, M. K., Reardon, PJT., Tang, J., Microwave Intensified Synthesis: Batch and Flow Chemistry, The Chemical Record, 2019, 9(1), 172-187 [4] Maximilian 0 Besenhard, Alec P LaGrow, Aden Hodzic, Manfred Kriechbaum, Luca Panariello, Giorgio Bais, Katerina Loizou, Spyridon Damilos, M Margarida Cruz, Nguyen Thi Kim Thanh, Asterios Gavriilidis, Co-precipitation synthesis of stable iron oxide nanoparticles with NaOH: New insights and continuous production via flow chemistry, Chemical Engineering Journal, 2020, 399, 125740
Claims (9)
- Claims 1. A microwave-powered flow system for producing advanced materials and chemicals at scale, including at least one high-power microwave generator, a waveguide, a crawler transmission unit or a conveyor, a microwave reactor and a safety unit.
- 2. The microwave-powered flow system according to claim 1, wherein the power of the high-power microwave generator ranges from 2kVV to 30 kW, and the power of the high-power microwave generator is continuously adjustable.
- 3. The microwave-powered flow system according to claim 1 or 2, wherein the microwave-powered flow system comprises two high-power microwave generators configured to be coupled to increase the energy input to the microwave reactor simultaneously.
- 4. The microwave-powered flow system according to claim 1 to 3, wherein the waveguide is a curved tube made of aluminium with a rectangular crossing section, having a width of 5cm-20cm, a length of 5cm-15cm, and a depth of 100cm to 1000cm.
- The microwave-powered flow system according to any of claims 1 to 4, wherein the microwave-powered flow system is configured to generate a continuous flow.
- 6. The microwave-powered flow system according to any of claims 1 to 5, wherein the conveyor has a width of 10cm-50cm and length of 5-10 meters, and it is made of materials with low microwave absorption (microwave loss tangent < 100 x10-4), preferably polytetrafluoroethylene (PTFE), quartz or other plastics, and the transmission speed ranges from 0.1s/s -5m/s.
- 7. The microwave-powered flow system according to any of claims 1 to 6, wherein the microwave-powered flow system comprises a temperature measurement unit by an IR sensor, two microwave suppressors to prevent microwave leaking and one water load to absorb extra microwave energy.
- 8. The microwave-powered flow system according to any of claims 1 to 7, wherein the conveyor is configured to withhold a temperature of 273K to 523K.
- 9. The microwave-powered flow system according to any of claims 1 to 8, wherein the pressure of the microwave reactor is in the range of 1-5 atmospheric pressure, and the volume of the microwave reactor ranges from 5m1 to 100m I. The microwave-powered flow system according to any of claims 1 to 9, wherein the temperature in the microwave reactor is controllable, ranging from 293k to 623K.11 The microwave-powered flow system according to any of claims 1 to 10, wherein the chemicals and advanced materials include inorganic materials, preferably high-quality two-dimensional materials and ceramics, including graphene, graphene oxide, M0S2, BN and organic materials, preferably Bis(2-hydroxyethyl) terephthalate, ethylene, vinyl chloride, propylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2206483.6A GB2618346A (en) | 2022-05-04 | 2022-05-04 | Large microwave powered conveyor system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2206483.6A GB2618346A (en) | 2022-05-04 | 2022-05-04 | Large microwave powered conveyor system |
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| Publication Number | Publication Date |
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| GB202206483D0 GB202206483D0 (en) | 2022-06-15 |
| GB2618346A true GB2618346A (en) | 2023-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| GB2206483.6A Pending GB2618346A (en) | 2022-05-04 | 2022-05-04 | Large microwave powered conveyor system |
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|---|---|---|---|---|
| EP0626871A1 (en) * | 1992-01-30 | 1994-12-07 | Emery Microwave Management Inc | Method and apparatus for the controlled reduction of organic material. |
| US20070102279A1 (en) * | 2006-02-02 | 2007-05-10 | Novak John F | Method and Apparatus for Microwave Reduction of Organic Compounds |
| CN204454601U (en) * | 2015-02-28 | 2015-07-08 | 高碑店市隆泰丰博石墨烯加工有限公司 | A kind of holding presses Graphene production unit that is continuous, the stripping of microwave heating puffing explosion |
| US20180305213A1 (en) * | 2017-04-19 | 2018-10-25 | Nanotek Instruments, Inc, | Microwave System and Method for Graphene Production |
| WO2019052453A1 (en) * | 2017-09-15 | 2019-03-21 | 四川宏图普新微波科技有限公司 | Process for maintaining cleanness and running of cavity during microwave cracking of waste tires |
| CN114425289A (en) * | 2020-10-29 | 2022-05-03 | 黄冈安瑞农环保科技有限公司 | Microwave reactor |
-
2022
- 2022-05-04 GB GB2206483.6A patent/GB2618346A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0626871A1 (en) * | 1992-01-30 | 1994-12-07 | Emery Microwave Management Inc | Method and apparatus for the controlled reduction of organic material. |
| US20070102279A1 (en) * | 2006-02-02 | 2007-05-10 | Novak John F | Method and Apparatus for Microwave Reduction of Organic Compounds |
| CN204454601U (en) * | 2015-02-28 | 2015-07-08 | 高碑店市隆泰丰博石墨烯加工有限公司 | A kind of holding presses Graphene production unit that is continuous, the stripping of microwave heating puffing explosion |
| US20180305213A1 (en) * | 2017-04-19 | 2018-10-25 | Nanotek Instruments, Inc, | Microwave System and Method for Graphene Production |
| WO2019052453A1 (en) * | 2017-09-15 | 2019-03-21 | 四川宏图普新微波科技有限公司 | Process for maintaining cleanness and running of cavity during microwave cracking of waste tires |
| CN114425289A (en) * | 2020-10-29 | 2022-05-03 | 黄冈安瑞农环保科技有限公司 | Microwave reactor |
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| Publication number | Publication date |
|---|---|
| GB202206483D0 (en) | 2022-06-15 |
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