CN220182779U - Device for producing hydrogen by methane steam reforming - Google Patents
Device for producing hydrogen by methane steam reforming Download PDFInfo
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- CN220182779U CN220182779U CN202321624175.0U CN202321624175U CN220182779U CN 220182779 U CN220182779 U CN 220182779U CN 202321624175 U CN202321624175 U CN 202321624175U CN 220182779 U CN220182779 U CN 220182779U
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- reaction chamber
- reactor
- feed inlet
- pipe
- reaction
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000001257 hydrogen Substances 0.000 title claims abstract description 14
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000000629 steam reforming Methods 0.000 title claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 86
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 19
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 11
- 239000003345 natural gas Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Hydrogen, Water And Hydrids (AREA)
Abstract
The utility model provides a device for producing hydrogen by methane steam reforming, which comprises a reactor, wherein a first feed inlet is arranged at the top of the reactor, a reaction chamber is arranged in the reactor, a second feed inlet is arranged at the bottom end of the reaction chamber, the first feed inlet and the second feed inlet are communicated with a discharge pipeline, the discharge pipeline is arranged at the outer side of the reactor, and the diameter of the discharge pipeline is larger than that of the first feed inlet and the second feed inlet. By limiting the sizes of the discharge pipeline, the first feeding port and the second feeding port, the residence time of the reaction materials in the discharge pipeline is prolonged, and the heat utilization rate among the reaction chamber, the reaction chamber and the reactor is improved.
Description
Technical Field
The utility model relates to the technical field of natural gas application, in particular to a device for producing hydrogen by methane steam reforming.
Background
Hydrogen is mainly in a compound state on the earth, is the most widely distributed substance in the universe, constitutes 75% of the universe quality, is a secondary energy source, is considered as the most potential clean energy source in the 21 st century, and has been of interest to people since 200 years ago and has been widely studied in many countries and regions of the world since the 70 th 20 th century.
The natural gas steam reforming technology is a technical method for producing hydrogen and synthesis gas which is commonly adopted in the industry at present, and with the development of a large amount of natural gas, particularly the popularization of pipeline natural gas in towns, sufficient and cheap natural gas raw materials are provided for distributed hydrogen production.
However, the technology of reforming natural gas to produce hydrogen belongs to a strong endothermic reaction, energy supply and heat transfer are a bottleneck problem of the reaction, and in the reaction process, the generated heat cannot be well utilized and is directly discharged, so that not only can energy be lost, but also environmental pollution can be caused.
In view of this, the present utility model has been made.
Disclosure of Invention
The utility model aims to provide a device for producing hydrogen by reforming methane steam, which is characterized in that a discharge pipeline is arranged, the pipe diameter of the discharge pipeline is set to be larger than the diameters of a first feed inlet and a second feed inlet, so that the reaction materials in the discharge pipeline can flow in a reaction chamber for a sufficient time to exchange heat, the heat loss is reduced, and the resource utilization rate is improved.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a device for producing hydrogen by methane steam reforming, which comprises a reactor, wherein a first feed inlet is arranged at the top of the reactor, a reaction chamber is arranged in the reactor, a second feed inlet is arranged at the bottom end of the reaction chamber, the first feed inlet and the second feed inlet are communicated with a discharge pipeline, the discharge pipeline is arranged at the outer side of the reactor, and the diameter of the discharge pipeline is larger than that of the first feed inlet and the second feed inlet. Through limiting the pipe diameter of the discharge pipeline, the flow time of the reaction materials between the discharge pipelines is increased, the reaction materials can be guaranteed to perform sufficient heat exchange, meanwhile, the speed of the reaction materials entering the second feeding port can be increased, the reaction materials collide with components in the device on the premise of increasing the speed, and the mixing between the reaction materials is increased through the collision.
Preferably, the discharging pipeline is spirally arranged on the outer side of the reaction chamber, the section of the discharging pipeline is a semicircular pipeline, the discharging pipeline comprises an arc-shaped surface and a flat surface, and the flat surface of the discharging pipeline is in contact with the reaction chamber. Through with the arranging pipeline sets up to hemispherical pipeline, increase the area of contact between arranging pipeline and the reaction chamber, improve heat exchange efficiency, increase thermal utilization ratio.
Preferably, the second feed inlet is communicated with an exhaust pipeline at the bottom of the reaction chamber, the exhaust pipeline and the reaction chamber are concentric circles, and the diameter of the circle where the exhaust pipeline is located is half of the diameter of the circle where the reaction chamber is located.
Preferably, the top of the exhaust pipeline and two sides of the exhaust pipeline are provided with a plurality of small holes, the three small holes on the same vertical plane are a group, and the intervals among the small holes in each group are the same. Through setting up exhaust duct's position, guarantee that exhaust duct can be through the aperture of seting up on it with the even spraying of reactant material to each position in the reaction chamber, increase reaction efficiency, avoid all reactant material to spout from same position just to spread the waste of time that causes.
Preferably, a combustion chamber is arranged at the bottom end of the reactor, the combustion chamber is arranged right below the reaction chamber, and an exhaust port is arranged at the top end of the reaction chamber.
Preferably, a preheating pipe is arranged on the outer side of the reactor, one end of the preheating pipe is communicated with the reaction material tank, the other end of the preheating pipe is communicated with the first feed inlet, and the diameter of the preheating pipe is equal to that of the first feed inlet.
Preferably, the reaction tank comprises a water storage tank and a gas storage tank, one end of the preheating pipe is provided with a three-way valve, the inlet of the three-way valve is communicated with the water storage tank and the gas storage tank, and the outlet of the three-way valve is communicated with the preheating pipe.
Preferably, the preheating pipe is spirally arranged outside the reactor from bottom to top.
Preferably, a ventilation plate is arranged between the combustion chamber and the reactor, and the ventilation plate is arranged at the bottom of the reaction chamber.
Preferably, an insulating layer is arranged on the outer side of the preheating pipe, and the reactor is wrapped by the insulating layer.
Compared with the prior art, the utility model has at least the following advantages:
(1) According to the utility model, the pipe diameter of the discharge pipeline is set to be larger than the diameters of the first feed inlet and the second feed inlet, so that the residence time of the reaction materials in the discharge pipeline is prolonged, the heat among the reaction chamber, the reaction chamber and the reactor can be fully utilized, and the waste is avoided;
(2) According to the utility model, the material discharging pipeline is arranged as the pipeline with the semicircular interface, so that the contact area with the reaction chamber can be increased, and the heat utilization is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is an isometric view of a reactor provided in an embodiment of the present utility model;
FIG. 2 is an isometric view of a reaction chamber according to an embodiment of the present utility model;
FIG. 3 is a top view of a reaction chamber according to an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of a reaction chamber according to an embodiment of the present utility model.
Wherein,
1-a reactor; 2-a reaction chamber; 3-an exhaust duct; 4-small holes; 5-a second feed inlet; 6-a discharge pipeline; 7-a first feed inlet; 8-preheating pipes; 9-a three-way valve; 10-combustion chamber; 11-a ventilation board; 12-exhaust port.
Detailed Description
The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings and detailed description, but it will be understood by those skilled in the art that the examples described below are some, but not all, examples of the present utility model, and are intended to be illustrative of the present utility model only and should not be construed as limiting the scope of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be in mechanical communication or in electrical communication; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In order to more clearly illustrate the technical scheme of the utility model, the following description is given by way of specific examples.
Examples
As shown in fig. 1 to 4, the present embodiment provides an apparatus for producing hydrogen by steam reforming methane, comprising a reactor 1, wherein a reaction chamber 2 and a combustion chamber 10 are disposed in the reactor 1, and the reaction chamber 2 is disposed directly above the combustion chamber 10.
The combustion chamber 10 is burnt by using natural gas as fuel, the generated flue gas with heat is upward, the reaction chamber 2 and the area between the reaction chamber 2 and the reactor 1 are heated, the temperature of the reaction chamber 2 can reach the temperature of the reaction of the natural gas and the hydrogen, in order to ensure the sufficient combustion, a ventilation plate 11 is arranged between the reactor 1 and the combustion chamber 10, the ventilation plate 11 is arranged at the bottom of the reactor 1, the reactor 1 is connected with the combustion chamber 10, and simultaneously, a plurality of ventilation holes are formed in the ventilation plate 11 and used for ensuring oxygen required by the combustion in the combustion chamber 10. And an exhaust port 12 is arranged at the top end of the reactor 1, and is used for exhausting the high-temperature gas generated by the combustion of the combustion chamber 10 after the utilization.
In order to better utilize the temperature of this part, a discharging pipeline 6 is arranged on the outer side of the reaction chamber 2, the discharging pipeline 6 is communicated with a second feeding port 5 arranged at the bottom of the reaction chamber 2, and the discharging pipeline 6 is spirally arranged on the outer side of the reaction chamber 2, so that the heat can be fully utilized, in this embodiment, the discharging pipeline 6 is arranged into a pipeline with a semicircular section, therefore, the discharging pipeline 6 comprises an arc-shaped surface and a flat surface, the flat surface is attached to the outer side of the reaction chamber 2, and thus, the heat inside the reaction chamber 2 and the heat between the reaction chamber 2 and the reactor 1 can be fully utilized by the discharging pipeline 6, and the heat loss is avoided.
After heat exchange, the reaction material in the discharge pipeline 6 is changed into gas at high temperature, and enters the discharge pipeline 3 arranged at the bottom of the reaction chamber 2 through the second feeding pipe, the discharge pipeline 3 and the reaction chamber 2 are concentric circles, the diameter of the circle where the discharge pipeline 3 is located is half of the diameter of the circle where the edge of the reaction chamber 2 is located, that is, the discharge pipeline 3 is arranged at the middle of the bottom of the reaction chamber 2, and in order to ensure that the reaction material can react as soon as possible in the discharge process, a plurality of small holes 4 are formed in the top and two sides of the discharge pipeline 3, so that the reaction material can be sprayed out from the small holes 4 to each corner in the reaction chamber 2, and that the catalyst in the reaction chamber 2 can be utilized.
Meanwhile, a first feed inlet 7 is arranged at the upper end of the reaction chamber 2, the first feed inlet 7 is communicated with the discharge pipeline 6, the reaction material enters the discharge pipeline 6 through the first feed inlet 7 and then enters the reaction chamber 2 through the second feed inlet 5 to react, and in order to ensure that the reaction material can sufficiently exchange heat, the diameters of the first feed inlet 7 and the second feed inlet 5 are set to be the same, and meanwhile, the diameter of the discharge pipeline 6 is larger than that of the first feed inlet 7 and the second feed inlet 5, so that the residence time of the reaction material in the discharge pipeline 6 can be prolonged due to the fact that the diameter is increased after the reaction material enters the discharge pipeline 6, the running speed is reduced.
The first feed inlet 7 is communicated with a preheating pipe 8, the preheating pipe 8 is arranged on the outer side of the reactor 1 and is spirally arranged on the reactor 1 from bottom to top, the preheating pipe 8 is communicated with a reaction tank, the reaction tank comprises a water storage tank and a gas storage tank, process water is stored in the water storage tank, process natural gas is stored in the gas storage tank, a three-way valve 9 is arranged at the inlet of the preheating pipe 8, the inlet of the three-way valve 9 is communicated with the water storage tank and the gas storage tank, and the outlet of the three-way valve 9 is communicated with the preheating pipe 8. Meanwhile, in order to avoid heat loss, a heat preservation layer is arranged on the outer side of the preheating pipe 8, and the preheating pipe 8 and the reactor 1 are wrapped by the heat preservation layer.
For further understanding of the present utility model, the following detailed description is given:
firstly, a combustion chamber 10 is opened for combustion, after the reaction temperature reaches, a valve connected with a water storage tank on a three-way valve 9 is opened, then high-temperature flushing is carried out through a preheating pipe 8, a first feed inlet 7, a discharge pipeline 6, a second feed inlet 5, an exhaust pipeline 3 and a reaction chamber 2, then the valve connected with the gas storage tank is opened, process natural gas and process water are mixed, the process water is changed into gas through heating of the preheating pipe 8 and the discharge pipeline 6 and is mixed with the process natural gas, then the gas enters the reaction chamber 2, catalytic reaction is carried out through a catalyst arranged in the reaction chamber 2, after the reaction is stable, air is introduced into an air pipeline arranged in the reaction chamber 2, the hydrogen-carbon ratio is ensured, and the smooth progress of the hydrogen production reaction is ensured.
Finally, it is to be understood that the above embodiments are merely exemplary embodiments employed for the purpose of illustrating the principles of the present utility model, however, the present utility model is not limited thereto. Various modifications and improvements may be made by those skilled in the art without departing from the principles and spirit of the utility model, and such modifications and improvements are also considered within the scope of the utility model.
Claims (10)
1. The device for producing hydrogen by methane steam reforming is characterized by comprising a reactor, wherein a first feed port is arranged at the top of the reactor, a reaction chamber is arranged in the reactor, a second feed port is arranged at the bottom end of the reaction chamber, the first feed port is communicated with a discharge pipeline, the discharge pipeline is arranged at the outer side of the reactor, and the pipe diameter of the discharge pipeline is larger than that of the first feed port and the second feed port.
2. The device according to claim 1, wherein the discharge pipe is spirally arranged outside the reaction chamber, the discharge pipe is a pipe with a semicircular section and comprises an arc-shaped surface and a flat surface, and the flat surface of the discharge pipe is in contact with the reaction chamber.
3. The device according to claim 1, wherein the second feed inlet is communicated with an exhaust pipe at the bottom of the reaction chamber, the exhaust pipe and the reaction chamber are concentric circles, and the diameter of the circle where the exhaust pipe is located is half of the diameter of the circle where the reaction chamber is located.
4. A device according to claim 3, wherein the top of the exhaust duct and the two sides of the exhaust duct are provided with a plurality of small holes, three small holes on the same vertical plane are in a group, and the intervals between the small holes in each group are the same.
5. The apparatus of claim 1, wherein a combustion chamber is provided at a bottom end of the reactor, the combustion chamber being disposed directly below the reaction chamber, and an exhaust port being provided at a top end of the reaction chamber.
6. The apparatus of claim 1, wherein a preheating tube is disposed outside the reactor, one end of the preheating tube is communicated with the reaction tank, the other end of the preheating tube is communicated with the first feed inlet, and the diameter of the preheating tube is equal to the diameter of the first feed inlet.
7. The device of claim 6, wherein the reaction tank comprises a water storage tank and a gas storage tank, one end of the preheating pipe is provided with a three-way valve, the inlet of the three-way valve is communicated with the water storage tank and the gas storage tank, and the outlet of the three-way valve is communicated with the preheating pipe.
8. The apparatus of claim 6, wherein the preheating tube is disposed outside the reactor in a bottom-to-top spiral.
9. The apparatus of claim 5, wherein a vent plate is disposed between the combustion chamber and the reactor, the vent plate being disposed at a bottom of the reaction chamber.
10. The apparatus of claim 8, wherein an insulation layer is provided outside the preheating tube, the insulation layer wrapping the reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321624175.0U CN220182779U (en) | 2023-06-25 | 2023-06-25 | Device for producing hydrogen by methane steam reforming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321624175.0U CN220182779U (en) | 2023-06-25 | 2023-06-25 | Device for producing hydrogen by methane steam reforming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220182779U true CN220182779U (en) | 2023-12-15 |
Family
ID=89107671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321624175.0U Active CN220182779U (en) | 2023-06-25 | 2023-06-25 | Device for producing hydrogen by methane steam reforming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220182779U (en) |
-
2023
- 2023-06-25 CN CN202321624175.0U patent/CN220182779U/en active Active
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| GR01 | Patent grant |