CN115477279A - Cyclone reactor for producing hydrogen by solar-driven methane thermal cracking - Google Patents
Cyclone reactor for producing hydrogen by solar-driven methane thermal cracking Download PDFInfo
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- CN115477279A CN115477279A CN202211121463.4A CN202211121463A CN115477279A CN 115477279 A CN115477279 A CN 115477279A CN 202211121463 A CN202211121463 A CN 202211121463A CN 115477279 A CN115477279 A CN 115477279A
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 89
- 239000001257 hydrogen Substances 0.000 title claims abstract description 89
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000004227 thermal cracking Methods 0.000 title claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 68
- 238000000926 separation method Methods 0.000 claims abstract description 30
- 239000002245 particle Substances 0.000 claims abstract description 26
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 16
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims abstract description 12
- 238000010517 secondary reaction Methods 0.000 claims abstract description 5
- 238000004064 recycling Methods 0.000 claims abstract 4
- 239000007787 solid Substances 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 14
- 238000010276 construction Methods 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 description 15
- 239000003054 catalyst Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 8
- 239000006229 carbon black Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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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
- C01B3/22—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds
- C01B3/24—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons
- C01B3/26—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts
-
- 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
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0266—Processes for making hydrogen or synthesis gas containing a decomposition step
- C01B2203/0277—Processes for making hydrogen or synthesis gas containing a decomposition step containing a catalytic decomposition step
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/08—Methods of heating or cooling
- C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1235—Hydrocarbons
- C01B2203/1241—Natural gas or methane
-
- 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
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
The invention relates to a cyclone reactor for producing hydrogen by solar-driven methane thermal cracking, which comprises a shell, wherein a primary reaction cavity, a hydrogen diversion recovery cavity, a secondary reaction cavity and a separation cavity are sequentially arranged in the shell from top to bottom; the first-stage reaction cavity is communicated with a plurality of feeding pipes; the hydrogen diversion recycling cavity is communicated with a hydrogen outlet, a diversion conical member with an open bottom end is coaxially arranged in the hydrogen diversion recycling cavity, a hollow columnar partition plate is arranged inside the diversion conical member to form a hydrogen buffer cavity, the hydrogen buffer cavity is communicated with the hydrogen outlet through an air outlet channel, an overflow outlet member is detachably fixed at the bottom end of the diversion conical member, and the overflow outlet member plugs the bottom of the hydrogen buffer cavity to form a particle collecting chamber; the separation cavity adopts the inverted cone-shaped cavity, the cyclone reactor integrates the reaction and separation functions, and a separation module is not required to be additionally arranged, so that the capital construction cost is reduced.
Description
Technical Field
The invention relates to the technical field of hydrogen preparation equipment, in particular to a cyclone reactor for preparing hydrogen by solar-driven methane thermal cracking.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The hydrogen is prepared by cracking low-carbon alkanes such as methane and the like, the products are hydrogen and carbon black, carbon oxides cannot be generated in the production process, the purity of the product is high, and the hydrogen is widely concerned by researchers in recent years.
At present, reactors for methane cracking reaction mainly comprise a vortex reactor, a tubular reactor, a fluidized bed reactor, a fixed bed reactor and the like under high temperature condition. The reactors all have the defect of single function, namely the reactors can only be used as reactors, and separation modules are still needed to be added in the process flow to realize the purification and collection of products, so that the capital construction cost of equipment is increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a cyclone reactor for preparing hydrogen by solar-driven methane thermal cracking, realizes the integration of cracking reaction and separation in a single device, and has multiple functions.
In order to achieve the purpose, the invention adopts the following technical scheme
The embodiment of the invention provides a cyclone reactor for producing hydrogen by solar-driven methane thermal cracking, which comprises a shell, wherein a primary reaction cavity, a hydrogen diversion recovery cavity, a secondary reaction cavity and a separation cavity are sequentially arranged in the shell from top to bottom;
the first-stage reaction chamber is communicated with a feeding pipe;
the hydrogen diversion recovery cavity is communicated with a hydrogen outlet, a diversion conical part with an open bottom end is coaxially arranged in the hydrogen diversion recovery cavity, a hollow columnar partition plate is arranged in the diversion conical part to form a hydrogen buffer cavity, the hydrogen buffer cavity is communicated with the hydrogen outlet through an air outlet channel, an overflow outlet part is detachably fixed at the bottom end of the diversion conical part, and the overflow outlet part plugs the bottom of the hydrogen buffer cavity to form a particle collecting chamber;
the separation cavity adopts an inverted cone-shaped cavity.
Optionally, the feed pipe is provided with a plurality of feed pipes, and the feed pipes are tangentially arranged with the primary reaction chamber.
Optionally, the top of the first-stage reaction chamber is communicated with a solar absorption chamber, the top of the solar absorption chamber is provided with an aperture, and a heat conduction wall is arranged between the bottom and the first-stage reaction chamber.
Optionally, the overflow outlet member is of an annular structure, the top surface of the overflow outlet member is provided with an annular groove to form a particle collection chamber, the outer edge portion of the overflow outlet member is in threaded connection with the bottom end of the flow guide conical member, and the inner edge portion of the overflow outlet member is in threaded connection with the annular partition plate.
Optionally, the outer edge of the bottom surface of the overflow outlet member is provided with an inwards concave arc-shaped surface.
Optionally, the bottom end of the separation cavity is communicated with the top end of the ash bucket, the bottom end of the ash bucket is provided with a solid particle outlet, and the ash bucket is further provided with a hydrogen outlet.
Optionally, the bottom end of the ash bucket is of an inverted cone structure.
Optionally, the guide cone is provided with guide vanes at its periphery, the guide vanes are helical vanes, the outer side of the helical vanes is fixedly connected with the housing, the inner side of the helical vanes is connected with the guide cone, and the guide vanes are provided with an air outlet channel for communicating the hydrogen outlet of the hydrogen diversion recovery cavity with the hydrogen buffer cavity.
Optionally, the housing is formed by detachably connecting a plurality of parts through flanges and fixing pieces.
Optionally, the guide cone includes a cylindrical portion, the periphery of the cylindrical portion is fixed with guide vanes, and a protruding portion protruding toward the first-stage reaction chamber is arranged at the top end of the cylindrical portion.
The invention has the beneficial effects that:
1. according to the cyclone separator, through the arrangement of the separation cavity, the hydrogen buffer cavity, the particle collection chamber and the ash bucket, the cracking reaction is realized, and meanwhile, the solid particles and the hydrogen can be separated, so that the cracking reaction of the methane gas and the separation of the hydrogen and the solid particles are integrated in one device, a separation module is not required to be additionally arranged to realize the purification and collection of products, the process flow is simplified, the capital construction cost is reduced, the carbon deposition probability of the catalyst is reduced, and the service life of the catalyst is prolonged.
2. According to the cyclone separator, the feeding pipe is arranged in a tangent mode with the first-stage reaction cavity, the cyclone fields are realized in the first-stage reaction cavity and the second-stage reaction cavity through the arrangement of the guide vanes, efficient mixing of materials and timely separation of products are realized by means of the cyclone fields, two-stage cracking reaction is carried out, and the reaction efficiency of hydrogen production through methane thermal cracking is improved.
3. According to the cyclone separator, the aperture, the solar energy absorption cavity and the heat conducting wall are arranged, so that solar energy can be converted into heat required by a cracking reaction, additional equipment for providing heat is not required, and energy consumption and equipment investment are reduced.
4. The cyclone separator has no moving part inside, reduces energy consumption and reduces operation and maintenance cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of the overall external structure of embodiment 1 of the present invention;
FIG. 2 is a schematic view of the overall internal structure of embodiment 1 of the present invention;
FIG. 3 is a plan view of the whole structure of embodiment 1 of the present invention;
FIG. 4 is a schematic view of the internal structure of a hydrogen diversion recovery chamber in embodiment 1 of the present invention;
FIG. 5 is a schematic view of an assembly of a guide cone and guide vanes according to embodiment 1 of the present invention;
the device comprises a first shell part 1, a second shell part 2, a third shell part 3, a fourth shell part 4, a first-stage reaction cavity 5, a hydrogen diversion recovery cavity 6, a second-stage reaction cavity 7, a separation cavity 8, a flange 9, a material inlet pipe 10, a solar energy absorption cavity 11, a diaphragm 12, a diaphragm 13, a heat conduction wall 14, a diversion conical member 15, a partition plate 16, a hydrogen buffer cavity 17, an overflow outlet member 17, a particle collection chamber 18, a thread structure 19, an arc-shaped surface 20, a diversion blade 21, a first hydrogen outlet pipe 22, a dust hopper 23, a solid particle discharge pipe 24, a second hydrogen outlet pipe 25 and a gas outlet passage 26.
Detailed Description
Example 1
The present embodiment provides a cyclone reactor for producing hydrogen by solar-driven thermal cracking of methane, as shown in fig. 1-5, comprising a housing, wherein the housing comprises four parts from top to bottom, and the four parts positioning the housing from top to bottom are a first housing part 1, a second housing part 2, a third housing part 3 and a fourth housing part 4 respectively.
Wherein the cavity in the first shell part 1 is a primary reaction cavity 5, the cavity in the second shell part 2 is a hydrogen diversion recovery cavity 6, the cavity in the third shell part 3 is a secondary reaction cavity 7, and the cavity in the fourth shell part 4 is a separation cavity 8.
Can dismantle fixed connection through flange 9 and mounting between the adjacent part of shell, the mounting adopts screw bolt and nut, and the shell adopts this kind of assembled structure, can improve the maintenance convenience of different parts, also can realize different structure assembly's suitability to improve the suitability of whole reactor.
One-level reaction chamber 5 is cylindrical cavity, and the upper portion of first shell portion 1 is provided with a plurality of inlet pipes 10, and a plurality of inlet pipes 10 set up along the hoop equidistant, and inlet pipe 10 is used for letting in methane and the catalyst granule that mixes in advance to one-level reaction chamber 5.
In this embodiment, eight feeding pipes 10 are provided, and it can be understood that the skilled person can set the number of feeding pipes 10 according to actual needs.
One end of the feeding pipe 10 is communicated with the primary reaction chamber 5, and the axis of the feeding pipe 10 is tangential to the primary reaction chamber 5. For the premixed methane gas and the catalyst particles entering the primary reaction cavity 5, a rotational flow field can be formed, and efficient mixing and reaction are realized.
The solar energy absorption shell is fixed to the top of the first shell portion 1, the solar energy absorption shell is internally provided with a solar energy absorption cavity 11, the solar energy absorption cavity 11 is a conical cavity, the end portion with the larger area is communicated with the first-stage reaction cavity 5, the end portion with the smaller area is fixed with a diaphragm 12, a heat conduction wall 13 is arranged between the solar energy absorption cavity 11 and the first-stage reaction cavity 5, and the outer edge of the heat conduction wall 13 is fixed to the inner side face of the first shell portion 1.
In this embodiment, the focused solar radiation energy irradiates the solar energy absorption cavity 11 through the aperture 12, and the heat is transferred to the methane gas in the primary reaction cavity 5 through the heat conduction wall 13, so as to realize the cracking reaction of the methane gas.
By adopting the arrangement mode, the solar energy is converted into the heat required by the cracking reaction, no additional equipment for providing heat is required, and the energy consumption and the equipment investment are reduced.
A flow guiding conical piece 14 is arranged in the hydrogen flow guiding recovery cavity 6, and the flow guiding conical piece 14 and the hydrogen flow guiding recovery cavity 6 are coaxially arranged.
The inside cavity and the uncovered setting in bottom that have of water conservancy diversion conical part 14, water conservancy diversion conical part 14 includes cylinder portion, and cylinder portion top is provided with towards the bellied bellying of one-level reaction chamber direction, and cylinder portion and bellying constitute water conservancy diversion conical part jointly, and in this embodiment, the bellying is hemisphere or semiellipsoid form arch, has reduced the resistance when the misce bene flows through, has avoided the production of flow blind spot.
A hollow cylindrical partition plate 15 is arranged in the flow guide conical part, two ends of the partition plate 15 are both arranged in an open mode, the partition plate 15 and the flow guide conical part 14 are arranged coaxially, and an annular hydrogen buffer cavity 16 is formed between the outer side face of the partition plate 15 and the inner side face of the flow guide conical part 14.
The bottom of the flow guiding conical part 14 is provided with an overflow outlet part 17, the overflow outlet part 17 adopts an annular structure matched with the hydrogen buffer cavity 16, the top surface of the overflow outlet part 17 is provided with an annular groove, and the annular groove forms a particle collecting chamber 18.
The outer edge part of the top of the overflow outlet member 17 is connected with the flow guiding conical member 14 through a thread structure 19, the inner edge part of the top of the overflow outlet member 17 is connected with the partition plate 15 through the thread structure 19, and the flow guiding conical member 14, the partition plate 15 and the overflow outlet member 17 are connected into a whole.
The inner ring edge and the outer ring edge of the bottom of the overflow outlet part 17 are both provided with concave arc-shaped surfaces 20 so as to reduce the occurrence probability of circulating flow near the overflow outlet part 17 and reduce the flow resistance.
The guide cone 14 is provided with guide vanes 21 at the outer circumference of the cylindrical portion, the guide vanes 21 are helical vanes, the inner side of the helical vanes is fixed to the outer circumferential surface of the cylindrical portion of the guide cone 14, the outer side is fixed to the inner side of the second housing portion 2, and the guide cone 14 is fixed to the inside of the second housing portion 2.
The hydrogen, carbon black and unreacted methane gas and catalyst generated after the reaction process of the first-stage reaction cavity 5 are fed into the second-stage reaction cavity 7 through the guide vanes, the guide vanes 21 accelerate the airflow, and a cyclone field is formed in the second-stage reaction cavity 7.
Wherein, be provided with a plurality of first hydrogen outlet pipes 22 on the second housing part 2, a plurality of first hydrogen outlet pipes 22 set up along the hoop equidistant, first hydrogen outlet pipe 22 forms the hydrogen export, it is corresponding, be provided with air outlet channel 26 on guide vane 21, air outlet channel one end and first hydrogen outlet pipe intercommunication, the other end and hydrogen cushion intercommunication, hydrogen in the hydrogen cushion 16 can get into first hydrogen outlet pipe 22 and then discharge through air outlet channel, the hydrogen export sets up on second housing part 2 that guide vane 21 corresponds, the disturbance influence to the spiral-flow field when having avoided the hydrogen export to set up the shell part that one-level reaction chamber 5 or second grade reaction chamber 7 correspond.
The secondary reaction chamber 7 is a cylindrical chamber, and correspondingly, the third shell part 3 is also a cylindrical structure.
The separation cavity 8 is arranged below the second-stage reaction cavity 7, the separation cavity 8 is of an inverted cone structure, the end part with the larger area is connected with the second-stage reaction cavity 7, and correspondingly, the fourth shell part 4 is of an inverted cone structure.
The end portion of the bottom end of the fourth housing portion 4 with the smaller area is connected with an ash bucket 23, specifically, an inlet pipe is arranged at the top of the ash bucket 23, and the inlet pipe is fixedly connected with the bottom end of the fourth housing portion 4 through a flange and a fixing member.
The bottom of ash bucket 23 is the back taper structure, and the central point that the back taper structure is the below puts and is provided with solid particle discharge pipe 24, forms the solid particle export, and the top of ash bucket 23 still is provided with a plurality of second hydrogen outlet pipes 25, forms the hydrogen export.
The working method of the embodiment comprises the following steps:
premixed methane gas and catalyst particles enter the inside of the first-stage reaction cavity 5 through the plurality of feeding pipes 10, because the feeding pipes 10 are arranged in a tangent mode with the first-stage reaction cavity 5, airflow forms a rotational flow field in the first-stage reaction cavity 5, focused solar radiation energy irradiates the solar energy absorption cavity 11 through the diaphragm 12 at the same time, high-temperature heat is transmitted to methane gas entering the first-stage reaction cavity 5 through the heat conduction wall 13 and enables the methane gas to generate a cracking reaction, hydrogen, carbon black and unreacted methane gas and catalyst generated after the reaction process of the first-stage reaction cavity 5 are accelerated by the guide vanes 21 on the periphery of the cylindrical part of the guide cone-shaped part enter the second-stage reaction cavity 7, further cracking reaction of the unreacted methane gas is realized by the aid of the rotational flow field in the second-stage reaction cavity 7 after the reaction process of the guide vanes 21, two-stage cracking reaction is realized by the first-stage reaction cavity 5 and the second-stage reaction cavity 7, the reaction efficiency is improved, after the reaction is finished, cracked products (hydrogen and carbon black) and catalyst enter the separation cavity, and initial separation of the hydrogen and solid particles (carbon black and catalyst) is completed by the aid of the spatial position change of the centrifugal force field under the inverted cone-shaped structure. Under the influence of the centrifugal force field, the generated hydrogen forms an inner rotational flow near the axis of the separation cavity, enters the hydrogen diversion and recovery cavity along the axial direction and enters the hydrogen buffer cavity 16 through the overflow outlet piece, wherein solid particles doped in the hydrogen fall into a solid particle collecting chamber 18 formed by an annular groove on the top surface of the overflow outlet piece through sedimentation, and the settled and purified hydrogen is discharged from a first hydrogen outlet pipe 22 of the second shell part 2. At the same time, the solid particles after the separation process flow into the ash bucket 23 along the wall surface of the separation chamber, wherein the doped and unseparated hydrogen is discharged from the second hydrogen outlet pipe 25 on the top surface of the ash bucket 23, and the solid particles are discharged from the solid particle discharge pipe 24.
By adopting the cyclone reactor of the embodiment, secondary cracking reaction can be carried out, the reaction efficiency can be improved in the secondary cracking reaction process, the contact area and the mixing efficiency of methane gas and a catalyst are improved by virtue of a cyclone field, meanwhile, the reaction products (hydrogen and carbon black) are timely separated by virtue of the separation cavity 8 and the separation of solid particles in the separation cavity 8, the carbon deposition phenomenon of the catalyst is reduced, the service life of the catalyst is prolonged, the purity of the product is improved by virtue of the purification of outlets of the hydrogen and the solid particles, the cracking reaction of the methane gas and the separation of the hydrogen and the solid particles are integrated in one device, the purification and the collection of the product are realized without additionally arranging a separation module, the process flow is simplified, the infrastructure cost is reduced, the carbon deposition probability of the catalyst is reduced, the service life of the catalyst is prolonged, and meanwhile, the energy consumption is reduced and the operation and maintenance cost is reduced due to no movable parts in the cyclone reactor.
In this embodiment, all hydrogen outlet pipes can be inserted into the production line for the hydrogen that produces gets into next process.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A cyclone reactor for preparing hydrogen by solar-driven methane thermal cracking is characterized by comprising a shell, wherein a primary reaction cavity, a hydrogen diversion recovery cavity, a secondary reaction cavity and a separation cavity are sequentially arranged in the shell from top to bottom;
the first-stage reaction chamber is communicated with a feeding pipe;
the hydrogen diversion recycling cavity is communicated with a hydrogen outlet, a diversion conical member with an open bottom end is coaxially arranged in the hydrogen diversion recycling cavity, a hollow columnar partition plate is arranged inside the diversion conical member to form a hydrogen buffer cavity, the hydrogen buffer cavity is communicated with the hydrogen outlet through an air outlet channel, an overflow outlet member is detachably fixed at the bottom end of the diversion conical member, and the overflow outlet member plugs the bottom of the hydrogen buffer cavity to form a particle collecting chamber;
the separation cavity adopts an inverted cone-shaped cavity.
2. The cyclone reactor of claim 1, wherein the feed tubes are arranged in a plurality and are tangential to the primary reaction chamber.
3. The cyclone reactor of claim 1 wherein the top of the primary reaction chamber is connected to a solar absorption chamber, the top of the solar absorption chamber is provided with an aperture, and a heat conducting wall is provided between the bottom of the solar absorption chamber and the primary reaction chamber.
4. The cyclone reactor of claim 1, wherein the overflow outlet member is in the form of a ring, the top surface of the overflow outlet member is provided with an annular groove to form a particle collection chamber, the outer edge of the overflow outlet member is threadedly connected to the bottom end of the flow guiding cone, and the inner edge of the overflow outlet member is threadedly connected to the annular partition.
5. The cyclone reactor of claim 1 wherein the overflow outlet member has concave arcuate surfaces on both the inner and outer edges of the bottom surface.
6. The cyclone reactor of claim 1 wherein the bottom of the separation chamber is in communication with the top of an ash hopper, the bottom of the ash hopper having an outlet for solid particles, the ash hopper further having an outlet for hydrogen.
7. The cyclone reactor for solar driven thermal cracking of methane to produce hydrogen as claimed in claim 6, wherein the bottom end of the ash bucket is of an inverted cone structure.
8. The cyclone reactor of claim 1 wherein the guide cone has guide vanes on its periphery, the guide vanes are helical vanes, the outer side of the helical vanes is fixed to the housing, the inner side of the helical vanes is connected to the guide cone, and the guide vanes have an outlet channel connecting the hydrogen outlet of the hydrogen guide recovery chamber to the hydrogen buffer chamber.
9. The cyclone reactor for the thermal cracking of methane to produce hydrogen as claimed in claim 1, wherein said housing is comprised of multiple sections removably connected by flanges and fasteners.
10. The cyclone reactor according to claim 1, wherein the guiding cone comprises a cylindrical portion, the guiding vanes are fixed on the outer circumference of the cylindrical portion, and the top end of the cylindrical portion is provided with a protrusion portion protruding toward the primary reaction chamber.
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| CN202211121463.4A CN115477279B (en) | 2022-09-15 | 2022-09-15 | Rotational flow reactor for preparing hydrogen by thermally cracking methane driven by solar energy |
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| CN202211121463.4A CN115477279B (en) | 2022-09-15 | 2022-09-15 | Rotational flow reactor for preparing hydrogen by thermally cracking methane driven by solar energy |
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| CN105647553A (en) * | 2016-03-22 | 2016-06-08 | 山东理工大学 | Flow guiding cyclone type biomass pyrolysis reactor |
| US20180208857A1 (en) * | 2016-06-03 | 2018-07-26 | Marathon Petroleum Company Lp | Higher containment vss with multi zone stripping |
| CN212559452U (en) * | 2020-06-10 | 2021-02-19 | 山东智龙氢燃料汽车科技有限公司 | Biological methane hydrogen production equipment |
| CN215161003U (en) * | 2021-03-05 | 2021-12-14 | 芶富均 | Liquid metal pyrolysis methane hydrogen production system |
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