CN216572449U - Reforming tank for petrochemical tail gas - Google Patents
Reforming tank for petrochemical tail gas Download PDFInfo
- Publication number
- CN216572449U CN216572449U CN202122289850.6U CN202122289850U CN216572449U CN 216572449 U CN216572449 U CN 216572449U CN 202122289850 U CN202122289850 U CN 202122289850U CN 216572449 U CN216572449 U CN 216572449U
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- China
- Prior art keywords
- reforming
- tank
- petrochemical
- inlet pipe
- catalyst
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- 238000002407 reforming Methods 0.000 title claims abstract description 64
- 239000003054 catalyst Substances 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 37
- 239000001257 hydrogen Substances 0.000 claims description 19
- 229910052739 hydrogen Inorganic materials 0.000 claims description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000002453 autothermal reforming Methods 0.000 claims description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000006057 reforming reaction Methods 0.000 abstract description 5
- 238000011049 filling Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000012855 volatile organic compound Substances 0.000 description 24
- 239000010410 layer Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000002156 mixing Methods 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000012495 reaction gas Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000001833 catalytic reforming Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000000629 steam reforming Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Hydrogen, Water And Hydrids (AREA)
Abstract
The technical scheme of the utility model discloses a reforming tank for petrochemical tail gas, which comprises a reforming tank, a steam generator and a steam generator, wherein the reforming tank comprises a steam generator, a steam generator and a steam generator; an air outlet pipe and a water inlet pipe which respectively penetrate through and are arranged at the top and the bottom of the reforming tank; wherein a plurality of catalyst plates are installed in the reforming tank in a stacked manner; and an air inlet pipe penetrates through the top of the reforming tank. According to the utility model, the catalyst plates are uniformly distributed and filled in the reforming tank in a layered manner, and the catalysts are linearly and orderly arranged, so that the disordered stacking of the catalysts is avoided, and the resistance in the reformer is greatly reduced; the reforming reaction raw material gas can be internally subjected to multi-stage reforming, so that the reforming efficiency is improved; the structure is simple and compact, the filling and the dismounting of the catalyst are convenient, and the expandability of the reaction vessel is good.
Description
Technical Field
The utility model relates to the technical field of reforming tanks, in particular to a reforming tank for petrochemical tail gas.
Background
Volatile Organic Compounds (VOCs) have been receiving increasing social attention because they have photochemical activity and are discharged into the atmosphere to promote the formation of fine particles and ozone through complex physicochemical reactions. The effective control of VOCs has become a hotspot problem in the field of atmospheric environment treatment in China at the present stage. The discharge amount of VOCs in petrochemical enterprises is large, and the discharge sources are roughly divided into storage tank discharge, loading and unloading process discharge, wastewater treatment system discharge, equipment leakage discharge, circulating cooling water system discharge, combustion flue gas discharge, organized process waste gas discharge, unorganized process waste gas discharge and the like. The VOCs components are mostly organic gases, can not be directly discharged into the atmosphere, and can be discharged into the atmosphere only after being treated by a certain process and reaching the national and regional pollution source discharge standards.
The existing reforming hydrogen production process and technology aiming at VOCs petrochemical tail gas have fewer reaction vessels, and can only be carried out by selecting a traditional fixed reaction bed reaction vessel. The fixed bed reactor has poor reaction gas mixing and reaction catalytic effects on the autothermal reforming reaction, so that a reactor capable of meeting the autothermal reforming reaction of the VOCs tail gas needs to be designed, and the hydrogen production efficiency is improved.
SUMMERY OF THE UTILITY MODEL
The utility model solves the technical problem that the existing reforming hydrogen production process and technology aiming at VOCs petrochemical tail gas have fewer reaction containers and can only be carried out by selecting the traditional fixed reaction bed reaction container. The fixed bed reactor has poor reaction gas mixing and reaction catalysis effects on the autothermal reforming reaction.
In order to solve the above technical problem, a technical solution of the present invention provides a reforming pot for petrochemical tail gas, comprising:
a reforming tank;
the air outlet pipe and the water inlet pipe respectively penetrate through and are arranged at the top and the bottom of the reforming tank;
wherein,
a plurality of catalyst plates are installed in the reforming tank in a stacked manner;
and the top of the reforming tank is provided with an air inlet pipe in a penetrating way.
Optionally, the air inlet pipe penetrates the catalyst plate at the same time.
Optionally, the catalyst plate is a nickel-based nickel-aluminum alloy catalyst, and is used for efficiently catalyzing the autothermal reforming hydrogen production reaction of petrochemical tail gas.
Optionally, the air inlet pipe comprises an upper air inlet pipe and a lower air inlet pipe which are respectively communicated with the upper surface and the lower surface of the catalyst plate.
Optionally, the outlet of the air inlet pipe in the reforming tank is close to the water inlet pipe.
Optionally, the inlet pipe is externally connected to a level gauge.
Optionally, the catalyst plates are in a mesh structure.
Optionally, a plurality of the catalyst plates are uniformly spaced apart.
Optionally, metal partition nets are respectively installed at two end positions in the reforming tank.
The technical scheme of the utility model has the beneficial effects that:
according to the utility model, the catalyst plates are uniformly distributed and filled in the reforming tank in a layered manner, and the catalysts are linearly and orderly arranged, so that the disordered stacking of the catalysts is avoided, and the resistance in the reformer is greatly reduced; the reforming reaction raw material gas can be internally subjected to multi-stage reforming, so that the reforming efficiency is improved; the structure is simple and compact, the filling and the dismounting of the catalyst are convenient, and the expandability of the reaction vessel is good.
Drawings
Fig. 1 is a schematic structural view of a reforming tank for petrochemical tail gas in an embodiment of the present invention.
In the drawings: 1 is the outlet duct, 2 is the intake pipe, 3 is the reforming tank, 4 is the catalyst board, 5 is the mixing chamber, 6 is the inlet tube, 7 is the level gauge, 8 is metal interlayer net.
The specific implementation mode is as follows:
the utility model is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
Referring to fig. 1, there is shown an embodiment of a reforming tank for petrochemical tail gas, which is characterized by comprising a reforming tank 3; an air outlet pipe 1 and a water inlet pipe 6 which respectively penetrate through and are arranged at the top and the bottom of the reforming tank 3; wherein a plurality of catalyst plates 4 are mounted in the reforming tank 3 in a stacked manner; the top of the reforming tank 3 is provided with an air inlet pipe 2 in a penetrating way.
In this embodiment, the gas inlet pipe 2 penetrates through the catalyst plate 4 at the same time, and the catalyst plate 4 is a nickel-based nickel-aluminum alloy catalyst, and performs high-efficiency catalysis on the autothermal reforming hydrogen production reaction of petrochemical tail gas. The air inlet pipe 2 comprises an upper air inlet pipe 21 and a lower air inlet pipe 22 which are respectively communicated with the upper surface and the lower surface of the catalyst plate 4.
In this embodiment, the outlet of the inlet pipe 2 in the reforming tank is close to the inlet pipe 6, and the inlet pipe 6 is externally connected to the liquid level meter 7.
In this embodiment, the catalyst plates 4 are in a mesh structure, and the plurality of catalyst plates 4 are uniformly spaced apart from each other. The catalyst plate 4 may be provided with a plurality of layers, such as three layers, four layers, and the like.
In this embodiment, metal spacer nets 8 are installed at both ends of the reforming tank 3.
The features and functions of the present invention will be further understood from the following description.
The traditional bed reactor has the advantages of simple design structure, dense catalyst accumulation, complex loading, poor detachable performance and more general gas permeability, and when the autothermal reforming reaction occurs, the reaction vessel is easily blocked due to carbon deposition and other problems of VOCs organic matter gas at high temperature, so that potential safety hazards appear.
The utility model is based on the technology of hydrogen production by reforming VOCs tail gas, designs a method for hydrogen production by direct cracking of VOCs and autothermal reforming of steam and oxygen by carrying out a reaction vessel and a bed layer which are professionally used for hydrogen production by reforming VOCs tail gas, and improves the hydrogen production efficiency by reforming.
According to the conventional treatment process for producing hydrogen by autothermal reforming of petrochemical VOCs tail gas, the problems that reaction gas is not uniformly mixed, the autothermal reforming reaction of VOCs tail gas is incomplete, the reforming efficiency is low and the like exist in the experimental process of a traditional tubular reaction bed layer, and the reaction container special for the autothermal reforming reaction of VOCs tail gas is designed in a targeted manner, so that the reforming efficiency, the conversion rate and the hydrogen yield of the whole autothermal reforming reaction are improved.
Aiming at petrochemical VOCs reforming hydrogen production technology, a targeted VOCs reforming reaction container for reforming hydrogen production reaction is designed, and comprises a reforming tank and a catalyst, and is characterized in that: the catalyst is filled in the reforming tank in a layered arrangement at a certain interval, the inner diameter of the reforming tank is 5-6 times larger than the diameter of the catalyst, metal partition layer nets are filled at two ends in the reforming tank, and two ends of the reforming tank are connected with the vent pipe.
The working method of the reforming tank for petrochemical tail gas comprises the following steps:
as shown in fig. 1, the design of the interior of the reforming tank 3 for petrochemical tail gas comprises three parts: a water inlet pipe 6 at the bottom, an air outlet pipe 1 at the upper part, a catalyst plate 4 layer at the middle layer and a mixing chamber 5 of gas at the upper layer and the lower layer which are separated by the catalyst plate 4. Deionized water enters the reforming tank 3 from the water inlet pipe 6 at the bottom of the reforming tank 3, the liquid level can be monitored by the liquid level meter 7 according to the condition of the entering deionized water, and the liquid water level is monitored in real time to accurately control the water quantity entering the reforming tank 3. Petrochemical tail gas VOCs enters a mixing chamber 5 of the reforming tank 3 from the air inlet pipe 2. The deionized water entering the reforming tank 3 is gasified at high temperature, is mixed with the VOCs of the petrochemical tail gas entering from the gas inlet pipe 2 in the mixing cavity 5, then enters the catalyst plate 4, carries out self-heating high-temperature steam reforming at the high temperature of the reaction temperature point of the catalyst in the catalyst plate 4, splits the long-chain organic compounds of the VOCs of the petrochemical tail gas into simple hydrocarbons such as hydrogen, carbon monoxide, carbon dioxide, methane and the like, is discharged from the gas outlet pipe 1, and then enters subsequent SOFC equipment for power generation through other processes such as filtering and purification.
According to the process for preparing hydrogen by autothermal reforming conversion of VOCs in petrochemical tail gas, the reaction vessel special for VOCs in petrochemical tail gas is designed to improve the efficiency of reforming hydrogen preparation, increase the long-term effective operation of reforming reaction, solve the problems of uneven air inlet mixing and insufficient reaction of the traditional fixed bed laminar reaction vessel, and easy inactivation of a catalyst due to carbon deposition, and ensure that the prepared hydrogen product has high purity and yield, the hydrogen preparation efficiency is greatly improved, and the production cost is reduced.
According to the utility model, the catalyst plates are uniformly distributed and filled in the reforming tank in a layered manner, and the catalysts are linearly and orderly arranged, so that the disordered stacking of the catalysts is avoided, and the resistance in the reformer is greatly reduced; the reforming reaction raw material gas can be internally subjected to multi-stage reforming, so that the reforming efficiency is improved; the structure is simple and compact, the filling and the dismounting of the catalyst are convenient, and the expandability of the reaction vessel is good.
The key point of the utility model is that different technological processes of deionized water evaporation, mixing of petrochemical tail gas VOCs and steam, catalytic reforming of VOCs and the like are integrated into a whole and are carried out in the same reactor, thereby saving the internal space of the whole equipment and simplifying the internal pipeline arrangement of the equipment.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (9)
1. A reformer tank for petrochemical tail gas, comprising:
a reforming tank;
the air outlet pipe and the water inlet pipe respectively penetrate through and are arranged at the top and the bottom of the reforming tank;
wherein,
a plurality of catalyst plates are installed in the reforming tank in a stacked manner;
and the top of the reforming tank is provided with an air inlet pipe in a penetrating way.
2. The reformer tank for petrochemical exhaust according to claim 1, wherein the inlet pipe simultaneously penetrates the catalyst plate.
3. The reformer tank for petrochemical exhaust according to claim 2, wherein the catalyst plate is a nickel-based nickel-aluminum alloy catalyst, and is configured to efficiently catalyze the autothermal reforming hydrogen production reaction of petrochemical exhaust.
4. The reforming pot for petrochemical exhaust as claimed in claim 2, wherein the air inlet pipe comprises two sections of upper and lower air inlet pipes which are respectively communicated with the upper and lower surfaces of the catalyst plate.
5. The reformer tank for petrochemical exhaust of claim 1, wherein the outlet of the air inlet pipe in the reformer tank is proximate to the water inlet pipe.
6. The reformer tank for petrochemical exhaust gases according to claim 1, wherein the water inlet pipe is externally connected to a liquid level gauge.
7. The reformer tank for petrochemical exhaust gases according to claim 1, wherein the catalyst plates are in the form of a mesh structure.
8. A reformer tank for petrochemical exhaust gases according to claim 1, wherein a plurality of said catalyst plates are arranged at regular intervals.
9. The reforming pot for petrochemical tail gas according to claim 1, wherein metal partition nets are installed at two ends of the reforming pot, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122289850.6U CN216572449U (en) | 2021-09-22 | 2021-09-22 | Reforming tank for petrochemical tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122289850.6U CN216572449U (en) | 2021-09-22 | 2021-09-22 | Reforming tank for petrochemical tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216572449U true CN216572449U (en) | 2022-05-24 |
Family
ID=81637828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122289850.6U Active CN216572449U (en) | 2021-09-22 | 2021-09-22 | Reforming tank for petrochemical tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216572449U (en) |
-
2021
- 2021-09-22 CN CN202122289850.6U patent/CN216572449U/en active Active
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