CN213896017U - Cylindrical catalytic dehydrogenation device - Google Patents
Cylindrical catalytic dehydrogenation device Download PDFInfo
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- CN213896017U CN213896017U CN202022329675.4U CN202022329675U CN213896017U CN 213896017 U CN213896017 U CN 213896017U CN 202022329675 U CN202022329675 U CN 202022329675U CN 213896017 U CN213896017 U CN 213896017U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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Abstract
The utility model belongs to the technical field of the water electrolysis, in particular to cylindricality catalysis hydrogen device that disappears. The hydrogen-gas separation device comprises a cylindrical shell, wherein the lower part of the shell of the cylindrical shell is connected with supporting legs, a hydrogen inlet pipe is introduced into the middle of the cylindrical shell, a porous fixing net and a porous catalyst layer loaded on the porous fixing net are arranged below the hydrogen inlet pipe in the cylindrical shell, a porous gas distribution layer, a porous catalyst layer and a porous fixing net are sequentially arranged on the hydrogen inlet pipe in the cylindrical shell, the bottom of the cylindrical shell is an air inlet, and the top of the cylindrical shell is a tail gas outlet. The middle of the cylindrical shell is provided with an air heat exchange tube, and the porous fixing net, the porous catalyst layer and the porous gas distribution layer are annular and are filled between the cylindrical shell and the air heat exchange tube.
Description
Technical Field
The utility model belongs to the technical field of the water electrolysis, in particular to cylindricality catalysis hydrogen device that disappears.
Background
When the water electrolysis device is adopted to prepare oxygen or ozone, a byproduct hydrogen is generated. Hydrogen is a flammable and explosive gas, and when mixed with air (oxygen), it will produce an explosive mixture, and will explode when exposed to heat or open fire. In the environment of the water electrolysis device, the presence of hydrogen is inevitable due to hydrogen leakage in the water electrolysis device. In these confined or confined spaces, reaching explosive limits can lead to significant accidents when hydrogen continues to accumulate in excess of 4% levels. Therefore, how to eliminate hydrogen in a closed or limited space and effectively control the concentration of the hydrogen in the environment to be below the explosion limit so as to prevent explosion accidents has great significance.
In a closed or confined space, hydrogen and oxygen are generally reacted to eliminate hydrogen. However, in general, hydrogen and oxygen hardly react to produce water. Only in the catalytic device, under the action of the catalyst, the hydrogen-oxygen reaction can occur to produce water.
In the existing catalytic dehydrogenation devices, for example, the catalytic dehydrogenation devices disclosed in chinese patent CN2901504Y and chinese patent CN73263949A can only eliminate hydrogen with low concentration, and the exhaust outlet of the catalytic dehydrogenation device described in chinese patent CN201620334930.0 is connected with an exhaust fan, and this structure can dilute the exhaust gas, resulting in the false appearance of low exhaust gas concentration.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of overcoming the defects existing in the prior art and providing a high-efficiency and fast-eliminating cylindrical catalytic dehydrogenation device for high-concentration hydrogen.
The utility model is realized by the following technical proposal.
The utility model provides a cylindricality catalysis dehydrogenation device, includes the cylindricality casing, the shell sub-unit connection of cylindricality casing has the supporting legs, leading-in hydrogen inlet tube in the middle of the cylindricality casing, the internal hydrogen inlet tube of cylindricality casing has porous fixed network and bears the porous catalyst layer on porous fixed network below, has porous gas distribution layer, porous catalyst layer and porous fixed network on the internal hydrogen inlet tube of cylindricality casing in proper order on, the bottom of cylindricality casing is air inlet, and the top is the tail gas export.
The porous fixed net plays a role in supporting and fixing the porous catalyst layer and is generally made of a metal net.
The porous gas distribution layer adopts porous filler substances, so that air and hydrogen are fully and uniformly mixed. The porous catalyst layer adopts a porous carrier loaded with a high-efficiency hydrogen-oxygen reaction catalyst. Are prior art and will not be described in detail.
The porous catalyst layer is cylindrical or formed by stacking a plurality of layers, preferably a plurality of layers.
The cylindrical shell can be a cylinder with any one of the shapes of a circle, a square, a diamond and the like in cross section.
Preferably, the cylindrical shell is provided with an air heat exchange tube in the middle, and the porous fixing net, the porous catalyst layer and the porous gas distribution layer are annular and are filled between the cylindrical shell and the air heat exchange tube.
The air heat exchange tube has the function of instantly accelerating the release of heat generated by the reaction of hydrogen and oxygen under the action of the catalyst, and can be assembled in multiple ways according to the actual hydrogen consumption so as to ensure the stable and long-term operation of the device.
The utility model discloses a cylindricality catalysis dehydrogenation device has that porous catalyst layer gas area of contact is big, and is small, and reaction rate is fast, and it is efficient to eliminate hydrogen, and the adaptation is extensive, can eliminate the hydrogen of 0.1% ~100% various concentration, and the automatic oxidant (air/oxygen) that supplyes of hydrogen in-process, advantages such as long-term steady operation can be controlled at 20-100 ℃ to the device.
Drawings
Fig. 1 is a schematic structural diagram of a cylindrical catalytic dehydrogenation device (without an air heat exchange tube).
Fig. 2 is a front view of a porous catalyst layer used in a cylindrical catalytic dehydrogenation unit (without an air heat exchange tube).
Fig. 3 is a schematic structural diagram of a cylindrical catalytic dehydrogenation unit (having an air heat exchanger).
Fig. 4 is a front view of a porous catalyst layer used in a catalytic dehydrogenation unit having a cylindrical shape (having an air heat exchanger).
The device comprises a 1-air heat exchange tube, a 2-tail gas outlet, a 3-porous fixing net, a 4-porous catalyst layer, a 5-porous gas distribution layer, a 6-hydrogen introducing tube, a 7-cylindrical shell, 8-supporting legs and a 9-air inlet.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The principle of the catalytic dehydrogenation reaction of the utility model is as follows:
H2+1/2O2-----H2heat of O +)
As shown in fig. 1 and 2, a cylindrical catalytic dehydrogenation device comprises a cylindrical shell 7, wherein a supporting leg 8 is connected to the lower part of the outer shell of the cylindrical shell 7, a hydrogen inlet pipe 6 is introduced into the middle of the cylindrical shell, a porous fixing net 3 and a porous catalyst layer 4 supported on the porous fixing net 3 are arranged below the hydrogen inlet pipe in the cylindrical shell, a porous gas distribution layer 5, a porous catalyst layer 4 and a porous fixing net 3 are sequentially arranged above the hydrogen inlet pipe in the cylindrical shell, an air inlet 9 is arranged at the bottom of the cylindrical shell, and a tail gas outlet 2 is arranged at the top of the cylindrical shell.
The porous fixed net plays a role in supporting and fixing the porous catalyst layer and is generally made of a metal net.
The porous gas distribution layer adopts porous filler substances, so that air and hydrogen are fully and uniformly mixed. The porous catalyst layer adopts a porous carrier loaded with a high-efficiency hydrogen-oxygen reaction catalyst. Are prior art and will not be described in detail.
The porous catalyst layer is cylindrical or formed by stacking a plurality of layers, preferably a plurality of layers.
The cylindrical shell can be a cylinder with any one of the shapes of a circle, a square, a diamond and the like in cross section.
The oxidant air (or oxygen) automatically enters the lower part of the cylindrical shell 7 from the air inlet 9, penetrates through the porous fixing net 3 and then enters the porous catalyst layer 4 at the lower part, and the porous catalyst layer has the function of blocking hydrogen from leaking downwards. The small amount of hydrogen and oxygen diffused downward react at the lower porous catalyst layer 4. Most of air (oxygen) continuously diffuses upwards to be mixed with hydrogen entering from the hydrogen inlet pipe 6, the mixture passes through the porous gas distribution layer and is uniformly distributed, and then the mixture is contacted with the porous catalyst layer 4 to react to generate water, and the water generated by the reaction is heated in the multilayer catalyst layer and is converted into steam, passes through the porous fixing net 3 and continuously passes through the tail gas outlet 2, so that the aim of catalytic dehydrogenation is achieved. The hydrogen content in the tail gas outlet is less than or equal to 70ppm and is safely discharged.
As shown in fig. 3 and 4, preferably, there is an air heat exchange tube in the middle of the cylindrical shell, and the porous fixing net, the porous catalyst layer and the porous gas distribution layer are annular and filled between the cylindrical shell and the air heat exchange tube.
The air heat exchange tube has a chimney effect, automatically discharges generated heat and ensures continuous and stable hydrogen elimination. The heat of the hydrogen-oxygen reaction at the two sides of the air heat exchange tube heats the air in the air heat exchange tube, the air rises at an accelerated speed, and the bottom is driven to enter more air, so that more hydrogen is digested, and the temperature of the surface of the catalyst is reduced.
Claims (6)
1. The utility model provides a cylindricality catalysis dehydrogenation device, its characterized in that, includes cylindricality casing (7), the shell sub-unit connection of cylindricality casing (7) has supporting legs (8), leading-in hydrogen inlet tube (6) in the middle of the cylindricality casing, the internal hydrogen inlet tube of cylindricality casing has porous fixed network (3) and bears porous catalyst layer (4) on porous fixed network (3) below, and the internal hydrogen inlet tube of cylindricality casing has porous gas distribution layer (5), porous catalyst layer (4) and porous fixed network (3) in proper order above, the bottom of cylindricality casing is air inlet (9), and the top is tail gas outlet (2).
2. A catalytic cylindrical dehydrogenation unit according to claim 1, wherein the porous support net (3) is made of a metal mesh.
3. A catalytic cylindrical dehydrogenation unit according to claim 1, wherein the porous gas distribution layer (5) is a porous filler material, and the porous catalyst layer (4) is a porous carrier on which an oxyhydrogen reaction catalyst is supported.
4. A catalytic cylindrical dehydrogenation device according to claim 1, wherein the porous catalyst layer (4) is cylindrical or formed by stacking a plurality of layers.
5. A cylindrical catalytic dehydrogenation unit according to claim 1, wherein the cylindrical casing (7) is a cylinder having a circular, square or rhombic cross-section.
6. A cylindrical catalytic dehydrogenation unit according to claim 1, wherein an air heat exchange tube (1) is arranged in the middle of the cylindrical shell (7), and the porous fixing net, the porous catalyst layer and the porous gas distribution layer are annular and filled between the cylindrical shell and the air heat exchange tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022329675.4U CN213896017U (en) | 2020-10-19 | 2020-10-19 | Cylindrical catalytic dehydrogenation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022329675.4U CN213896017U (en) | 2020-10-19 | 2020-10-19 | Cylindrical catalytic dehydrogenation device |
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| Publication Number | Publication Date |
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| CN213896017U true CN213896017U (en) | 2021-08-06 |
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| CN202022329675.4U Active CN213896017U (en) | 2020-10-19 | 2020-10-19 | Cylindrical catalytic dehydrogenation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832622A (en) * | 2022-04-15 | 2022-08-02 | 华东理工大学 | High-pressure hydrogen cylinder protective housing based on silk screen reactor dehydrogenation function |
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2020
- 2020-10-19 CN CN202022329675.4U patent/CN213896017U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832622A (en) * | 2022-04-15 | 2022-08-02 | 华东理工大学 | High-pressure hydrogen cylinder protective housing based on silk screen reactor dehydrogenation function |
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