CN114921258A - Recyclable tire microwave in-situ catalytic pyrolysis method for preparing hydrogen-rich gas - Google Patents
Recyclable tire microwave in-situ catalytic pyrolysis method for preparing hydrogen-rich gas Download PDFInfo
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- CN114921258A CN114921258A CN202210540717.XA CN202210540717A CN114921258A CN 114921258 A CN114921258 A CN 114921258A CN 202210540717 A CN202210540717 A CN 202210540717A CN 114921258 A CN114921258 A CN 114921258A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/07—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of solid raw materials consisting of synthetic polymeric materials, e.g. tyres
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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
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/005—After-treatment of coke, e.g. calcination desulfurization
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/02—Multi-step carbonising or coking processes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/12—Applying additives during coking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
Abstract
The invention discloses a method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of recyclable tires. The method can effectively convert hydrogen elements in the waste tires into hydrogen to obtain high-quality hydrogen-rich gas, and realize energy utilization of waste; meanwhile, carbon black generated by pyrolysis of the waste tire can be used as an in-situ catalyst and a wave-absorbing medium for cyclic utilization, so that the raw material cost is greatly reduced, and the resource utilization of wastes is realized. The method can convert most of carbon elements in the waste tire into the pyrolytic carbon while obtaining the high-quality hydrogen-rich gas, and the pyrolytic carbon is fixed in the pyrolytic carbon in a solid form, so that the carbon emission of the whole process can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of solid waste energy resource utilization, in particular to a method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of waste tires, wherein a pyrolysis carbon product can be recycled.
Background
The development of the current society is transitionally dependent on the traditional fossil energy, and serious energy shortage and environmental pollution problems are caused. Developing and finding sustainable new energy is one of the important ways to solve the energy crisis. Among the various forms of energy, hydrogen energy is considered one of the best alternative energy sources because of its advantages of high efficiency, non-toxicity, no pollution, etc.
In recent years, "black pollution" caused by waste tires has been receiving increasing attention. The waste tyre mainly comprises two elements of carbon and hydrogen and a small amount of elements of oxygen, sulfur, nitrogen and the like, wherein the content of the hydrogen element can reach 6-8 percent, and the waste tyre is similar to biomass and coal and has the potential of preparing hydrogen. The pyrolysis technology of the waste tire refers to a process of breaking the cross-linked structure and chemical bonds of rubber in an inert atmosphere by a high-temperature mode and decomposing the rubber into products such as pyrolysis gas, pyrolysis carbon, pyrolysis oil and the like. Three-phase products obtained by pyrolysis have different utilization values, wherein the main components of pyrolysis gas are hydrogen, methane, ethane, ethylene, carbon monoxide and other small molecular gases, and the pyrolysis gas has high calorific value and is a good alternative fuel; the pyrolytic carbon mainly comprises fixed carbon and ash, has a good pore structure and also contains a plurality of metal elements such as zinc, iron and the like, and the metal elements have very excellent catalytic activity, so the pyrolytic carbon is often used as a cheap catalyst for various catalytic reactions.
However, the pyrolysis oil content of the conventional pyrolysis product of the waste tire is high, reaching 45 to 50%, and a large amount of hydrogen elements remain in the pyrolysis oil in the form of hydrocarbons, thereby resulting in a low yield of hydrogen in the pyrolysis gas. The traditional pyrolysis technology is mainly based on an external heat source heating mode, and the heating mode has the defects of low heat transfer efficiency, low temperature rise rate and the like and is not beneficial to the generation of hydrogen. Unlike the conventional heating method, the microwave heating can generate heat from the central portion of the material by inducing dipole rotation, and the heating method has the advantage of high heat transfer efficiency because the heat is generated from the inside of the material; meanwhile, the microwave heating energy density is high, the temperature rise rate of the substance is high, and the yield of hydrogen in the pyrolysis gas can be further improved. In addition, the dehydrogenation catalyst is also one of the effective methods for increasing the hydrogen yield, and under the action of the catalyst, hydrogen elements in the hydrocarbon can be removed in the form of hydrogen, so that the yield of the pyrolytic carbon can be increased while the yield of the hydrogen is improved.
The invention cracks the waste tire by a microwave heating method, and can effectively improve the yield of hydrogen in the pyrolysis gas; meanwhile, pyrolytic carbon generated by pyrolysis of the waste tires can be used as a catalyst to promote the conversion of hydrogen elements into hydrogen in the pyrolysis process, so that the hydrogen yield is further improved. In addition, carbon black generated by microwave pyrolysis can be used as a catalyst for repeated use, so that the cost is reduced, and the closed-loop sustainable development of the process is realized.
Disclosure of Invention
The invention aims to provide a sustainable method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of waste tires. The method can effectively convert hydrogen elements in the waste tires into hydrogen to obtain high-quality hydrogen-rich gas, and the generated pyrolytic carbon can be used as an in-situ catalyst and a wave-absorbing medium for microwave pyrolysis for repeated use, so that the cost is reduced, the closed-loop sustainable development of the process is realized, and the method has a wide application prospect.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
(1) preparation of initial pyrolytic carbon Black: crushing and grinding the waste tire to obtain a waste tire powder sample, and pyrolyzing the waste tire powder sample at high temperature under a protective atmosphere to obtain a waste tire pyrolytic carbon black product; and grinding the pyrolytic carbon black to obtain a pyrolytic carbon black powder sample, wherein the pyrolytic carbon black is initial pyrolytic carbon black and is used as a catalyst for microwave pyrolysis and a wave-absorbing medium for later use.
(2) Preparing hydrogen-rich gas by in-situ catalytic pyrolysis in a microwave environment: uniformly mixing the initial pyrolytic carbon black obtained in the step (1) and a waste tire powder sample to be used as a pyrolysis section; meanwhile, initial pyrolytic carbon black is used as a catalytic section, is arranged in a reactor and then is placed in a microwave environment, and is heated under the protection of protective atmosphere, volatile components generated by pyrolysis of waste tires pass through the catalytic section along with carrier gas, then are discharged out of a microwave heating furnace chamber and are collected, and the collected gas is hydrogen-rich gas; the generated microwave pyrolytic carbon black and the used catalyst are mixed and ground to obtain microwave pyrolytic carbon black powder which is used as a catalyst and a wave-absorbing medium for microwave pyrolysis in the next stage for standby.
(3) And (3) recycling the pyrolytic carbon black: uniformly mixing the microwave pyrolytic carbon black powder obtained in the step (2) with the waste tire powder sample obtained in the step (1) to serve as a pyrolysis section; meanwhile, the microwave pyrolysis carbon black is used as a catalytic section, is arranged in a microwave environment after being arranged in a reactor, and is heated under the protection of protective atmosphere, volatile components generated by pyrolysis of waste tires pass through the catalytic section along with carrier gas, then are discharged out of a microwave heating furnace chamber and are collected, and the collected gas is hydrogen-rich gas; the generated microwave pyrolytic carbon black and the used catalyst are mixed and ground to obtain microwave pyrolytic carbon black powder which is used as a catalyst and a wave-absorbing medium for microwave pyrolysis in the next stage for standby. And (4) continuously circulating the step (3) to realize sustainable utilization of the method.
Preferably, in the step (1), the heating mode may be any mode such as electric heating, and the high-temperature pyrolysis temperature is 500-600 ℃. When the pyrolysis temperature is lower than 500 ℃, the tire can not be cracked completely, the quality of the pyrolytic carbon black is influenced, and when the pyrolysis temperature is higher than 600 ℃, the energy consumption is too high.
Preferably, in the step (2), the mixing mass ratio of the waste tire powder sample in the pyrolysis section to the initial pyrolytic carbon black sample is 1:1, and the mass ratio of the waste tire powder sample in the pyrolysis section to the initial pyrolytic carbon black sample in the catalysis section is 1: 3. By the arrangement, the tire powder sample in the pyrolysis section can be rapidly heated, and the defect of insufficient wave absorbing performance of the tire powder sample in a microwave field is overcome; meanwhile, the initial pyrolytic carbon black and the microwave pyrolytic carbon black obtained by the reaction have uniformity, and the quality of the obtained microwave pyrolytic carbon black is not influenced after the initial pyrolytic carbon black and the microwave pyrolytic carbon black are mixed.
Preferably, in the step (3), the mixing mass ratio of the waste tire powder sample and the microwave pyrolysis carbon black sample in the pyrolysis section is 1:1, and the mass ratio of the waste tire powder sample in the pyrolysis section to the microwave pyrolysis carbon black sample in the catalysis section is 1: 3.
Preferably, in the step (2) and the step (3), microwaves are used as a heat source, the frequency of the microwaves is usually 2.45GHz, and the power of the microwaves is at least 800W.
Preferably, in the step (1), the step (2) and the step (3), the particle size of the waste tire powder sample, the particle size of the initial pyrolytic carbon black powder sample and the particle size of the microwave pyrolytic carbon black powder sample are all less than 40 meshes.
Preferably, in the step (1), the step (2) and the step (3), the protective atmosphere is nitrogen or argon.
Compared with the prior art, the invention has the advantages that:
(1) the invention can convert the waste tire which is one of organic solid wastes into the hydrogen-rich gas with high added value, realizes the high-efficiency utilization scheme of converting the wastes into clean energy, and effectively reduces the dependence on the traditional fossil energy.
(2) The invention uses the waste tire pyrolytic carbon as an in-situ catalyst and a wave-absorbing medium, and has the advantages of two aspects: firstly, the main component of the pyrolytic carbon is carbon black which is a good wave-absorbing medium, so that the sample can be rapidly heated in a microwave environment, and the generation of hydrogen is facilitated; second, the pyrolytic carbon contains a large amount of metal oxides (zinc oxide, iron oxide, etc.) which are good dehydrogenation catalysts and promote the generation of hydrogen gas from waste tires during pyrolysis.
(3) The invention adopts an in-situ catalysis mode, and reactants and a catalyst are arranged in the same reactor, so that the catalysis effect can be effectively improved; meanwhile, the microwave pyrolytic carbon generated by the in-situ catalytic reaction and the used catalyst have uniformity, and can be used as the catalyst for the next cycle process for repeated use after being mixed, so that the raw material cost is greatly reduced, and the sustainable development of the method is realized.
(4) The method not only can obtain high-quality hydrogen-rich gas, but also can convert most of carbon elements in the waste tire into pyrolytic carbon which is fixed in the pyrolytic carbon in a solid form, so that the carbon emission of the whole process can be effectively reduced.
Drawings
FIG. 1 is a schematic diagram of a process flow for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of scrap tires.
The sequence numbers in the figures illustrate: 1, a gas cylinder; 2, a gas valve; 3, a flow meter; 4, an infrared thermometer; 5, a quartz tube; 6, a microwave generator; 7, a microwave heating cavity; 8, a gas collecting device; 9 a pyrolysis section; 10 catalytic stage
Detailed Description
The invention is further described in the following detailed description with reference to the drawings in which:
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described with reference to the following examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Examples
Example 1:
the method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of waste tires comprises the following steps:
(1) crushing and grinding the waste tire to obtain a waste tire powder sample with the particle size of less than 40 meshes, putting the sample into an electric heating tube type furnace, and carrying out pyrolysis at the high temperature of 600 ℃ in the nitrogen atmosphere to obtain the initial pyrolytic carbon black.
(2) And grinding the initial pyrolytic carbon black to obtain pyrolytic carbon powder with the particle size of less than 40 meshes. 0.5g of pyrolytic carbon powder and 0.5g of waste tire powder are taken, the pyrolytic carbon powder and the waste tire powder are uniformly mixed and then are placed in a pyrolysis section 9, and no substance is placed in a catalytic section 10. The gas valve 2 was opened and the line purged with nitrogen to remove the original air in the line.
(3) Adjusting the power of the microwave generator 7 to 1000W, starting temperature rise of the sample and generating pyrolysis reaction, discharging the generated gas out of the microwave heating cavity 7, collecting the gas in the gas collection device 8, and analyzing to obtain the pyrolysis gas product with the volume fraction of hydrogen of 62.01% and the hydrogen yield of 12.60mmol/(g of waste tires).
Example 2:
the method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of waste tires comprises the following steps:
(1) crushing and grinding the waste tire to obtain a waste tire powder sample with the particle size of less than 40 meshes, putting the sample into an electric heating tube type furnace, and carrying out pyrolysis at the high temperature of 600 ℃ in the nitrogen atmosphere to obtain the initial pyrolytic carbon black.
(2) And grinding the initial pyrolytic carbon black to obtain pyrolytic carbon powder with the particle size of less than 40 meshes. 0.5g of pyrolytic carbon powder and 0.5g of waste tire powder are taken, mixed uniformly and then placed in a pyrolysis section 9, and simultaneously 1.5g of pyrolytic carbon powder is taken and placed in a catalysis section 10. The gas valve 2 was opened and the line purged with nitrogen to remove any air in the line.
(3) Adjusting the power of the microwave generator 7 to 1000W, starting temperature rise of the sample and carrying out pyrolysis reaction, discharging the generated gas out of the microwave heating chamber 7, collecting the gas in the gas collecting device 8, and analyzing to obtain a pyrolysis gas product with the hydrogen volume fraction of 73.12% and the hydrogen yield of 27.81mmol/(g of waste tires).
Example 3:
the method for recycling the microwave pyrolysis carbon black comprises the following steps:
(1) and crushing and grinding the waste tire to obtain a waste tire powder sample with the particle size of less than 40 meshes for later use.
(2) The microwave pyrolytic carbon black obtained in example (2) was ground to obtain microwave pyrolytic carbon powder having a particle size of less than 40 mesh. 0.5g of microwave pyrolytic carbon powder and 0.5g of waste tire powder are taken, uniformly mixed and then placed in a pyrolysis section 9, and simultaneously 1.5g of microwave pyrolytic carbon powder is taken and placed in a catalysis section 10. The gas valve 2 was opened and the line purged with nitrogen to remove the original air in the line.
(3) Adjusting the power of the microwave generator 7 to 1000W, starting temperature rise of the sample and carrying out pyrolysis reaction, discharging the generated gas out of the microwave heating chamber 7, collecting the gas in the gas collecting device 8, and analyzing to obtain a pyrolysis gas product with a hydrogen volume fraction of 72.38% and a hydrogen yield of 24.01mmol/(g of waste tires).
(4) And (4) mixing the microwave pyrolytic carbon black obtained in the step (3) with a used catalyst, and then grinding to obtain microwave pyrolytic carbon powder with the particle size of less than 40 meshes. 0.5g of microwave pyrolytic carbon powder and 0.5g of waste tire powder are taken and uniformly mixed and then placed in a pyrolysis section 9, and simultaneously 1.5g of microwave pyrolytic carbon powder is taken and placed in a catalysis section 10. The gas valve 2 was opened and the line purged with nitrogen to remove the original air in the line.
(5) Adjusting the power of the microwave generator 7 to 1000W, starting temperature rise of the sample and generating pyrolysis reaction, discharging the generated gas out of the microwave heating cavity 7, collecting the gas in the gas collection device 8, and analyzing to obtain the pyrolysis gas product with the volume fraction of hydrogen of 73.67% and the hydrogen yield of 23.62mmol/(g of waste tire).
Claims (8)
1. A method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of recyclable tires is characterized by comprising the following steps: the method comprises the following steps:
(1) preparation of initial pyrolytic carbon Black: crushing and grinding a tire to obtain a tire powder sample, and carrying out high-temperature pyrolysis on part of the tire powder sample under a protective atmosphere to obtain a tire pyrolysis carbon black product; grinding the tire pyrolytic carbon black product to obtain pyrolytic carbon black powder, wherein the pyrolytic carbon black powder is initial pyrolytic carbon black and is used as a catalyst and a wave-absorbing medium for microwave pyrolysis for later use;
(2) preparing hydrogen-rich gas by in-situ catalytic pyrolysis in a microwave environment: uniformly mixing the initial pyrolytic carbon black obtained in the step (1) and a tire powder sample to form a pyrolysis section; arranging initial pyrolytic carbon black serving as a catalytic section in a reactor, placing the reactor in a microwave environment, heating the reactor under the protection of protective atmosphere, discharging volatile components generated by tire pyrolysis out of the reactor after the volatile components pass through the catalytic section along with carrier gas, and collecting the volatile components, wherein the collected gas is hydrogen-rich gas; mixing and grinding the generated microwave pyrolysis carbon black and the used catalyst to obtain microwave pyrolysis carbon black powder which is used as a catalyst and a wave-absorbing medium for microwave pyrolysis in the next stage for later use;
(3) and (3) recycling the pyrolytic carbon black: uniformly mixing part of the microwave pyrolytic carbon black powder obtained in the step (2) with the tire powder sample obtained in the step (1) to form a pyrolysis section; placing microwave pyrolysis carbon black powder as a catalytic section in a reactor, placing the reactor in a microwave environment, heating under the protection of protective atmosphere, discharging volatile components generated by tire pyrolysis out of the reactor after passing through the catalytic section along with carrier gas, and collecting the volatile components, wherein the collected gas is hydrogen-rich gas; mixing and grinding the generated microwave pyrolysis carbon black and the used catalyst to obtain microwave pyrolysis carbon black powder which is used as a catalyst and a wave-absorbing medium for microwave pyrolysis in the next stage for later use;
and (4) continuously circulating the step (3) to realize sustainable utilization.
2. The method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of recyclable tires according to claim 1, characterized in that: in the step (1), the high-temperature pyrolysis temperature is 500-600 ℃.
3. The method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of recyclable tires according to claim 1, characterized in that: in the step (2), the mixing mass ratio of the tire powder sample and the initial pyrolytic carbon black in the pyrolysis section is 1:1, and the mass ratio of the amount of the tire powder sample in the pyrolysis section to the amount of the initial pyrolytic carbon black in the catalysis section is 1: 3.
4. The method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of recyclable tires according to claim 1, characterized by: in the step (3), the mixing mass ratio of the tire powder sample and the microwave pyrolysis carbon black powder in the pyrolysis section is 1:1, and the mass ratio of the tire powder sample in the pyrolysis section to the microwave pyrolysis carbon black powder in the catalysis section is 1: 3.
5. The method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of recyclable tires according to claim 1, characterized by: in the step (2) and the step (3), microwaves are used as a heat source, and the microwave power is at least 800W.
6. The method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of recyclable tires according to claim 1, characterized by: in the step (2) and the step (3), the in-situ catalysis is adopted as the catalysis mode, and the generated microwave pyrolytic carbon and the used catalyst are mixed and ground and then are used as the catalyst for the next circulation process for repeated use.
7. The method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of recyclable tires according to claim 1, characterized in that: in the step (1), the step (2) and the step (3), the particle sizes of the tire powder sample, the initial pyrolytic carbon black and the microwave pyrolytic carbon black powder are all smaller than 40 meshes.
8. The method for preparing hydrogen-rich gas by microwave in-situ catalytic pyrolysis of recyclable tires according to claim 1, characterized in that: in the steps (1), (2) and (3), the protective atmosphere is nitrogen or argon.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115404089A (en) * | 2022-08-30 | 2022-11-29 | 光大绿色环保技术服务(江苏)有限公司 | Waste tire cracking device adopting molten salt and carbon black for synergistic heating and application |
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| CN109609171A (en) * | 2018-12-24 | 2019-04-12 | 大连理工大学 | A kind of waste tire catalytic pyrolysis method |
| CN111471476A (en) * | 2020-03-30 | 2020-07-31 | 东南大学 | Waste tire cracking device and method based on combination of partition wall heat exchange and microwave heating |
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| CN109609171A (en) * | 2018-12-24 | 2019-04-12 | 大连理工大学 | A kind of waste tire catalytic pyrolysis method |
| CN111471476A (en) * | 2020-03-30 | 2020-07-31 | 东南大学 | Waste tire cracking device and method based on combination of partition wall heat exchange and microwave heating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115404089A (en) * | 2022-08-30 | 2022-11-29 | 光大绿色环保技术服务(江苏)有限公司 | Waste tire cracking device adopting molten salt and carbon black for synergistic heating and application |
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