CN219209878U - Chemical combination reaction device - Google Patents
Chemical combination reaction device Download PDFInfo
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- CN219209878U CN219209878U CN202223453032.6U CN202223453032U CN219209878U CN 219209878 U CN219209878 U CN 219209878U CN 202223453032 U CN202223453032 U CN 202223453032U CN 219209878 U CN219209878 U CN 219209878U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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Abstract
The utility model relates to a chemical combination reaction device, which comprises a shell, wherein a closed space is formed in the shell, an upper pipe box, a lower pipe box, a reaction layer and a catalyst pipe are arranged in the shell, and the upper pipe box is positioned at the top of the closed space; the lower pipe box is positioned at the lower part of the closed space, and a raw material gas inlet is formed on the lower pipe box; the reaction layer is positioned between the upper pipe box and the lower pipe box; the catalyst material pipe is arranged in the reaction layer, and meanwhile, two ends of the catalyst material pipe are respectively communicated with the lower pipe box and the upper pipe box; the reaction layer comprises a first product air chamber, a catalyst filling chamber and a second product air chamber in sequence along the transverse direction, the upper pipe box is communicated with the first product air chamber, a product air outlet is formed in the second product air chamber, a first catalyst is filled in a catalyst pipe, and a second catalyst is filled in a catalyst filling chamber. The chemical combination reaction device can reduce energy consumption and simplify the structure of the whole device.
Description
Technical Field
The utility model belongs to the technical field of new energy and chemical synthesis, and particularly relates to a chemical combination reaction device for synthesizing methanol by hydrogenation of carbon dioxide.
Background
At present, the preparation of methanol from coal or natural gas is a mainstream technology for preparing methanol, and the main principle of the technology is that coal gasification or natural gas reforming is carried out to obtain synthesis gas of carbon monoxide and hydrogen, and the synthesis gas is subjected to catalytic reaction according to a set proportion to synthesize the methanol. The synthesis of green low-carbon methanol from carbon dioxide in industrial exhaust gas and green or industrial byproduct hydrogen has been a study that has been attracting attention and has been used in industrial applications in recent years. Specifically, the main technical route for synthesizing the methanol by hydrogenation of the carbon dioxide comprises a one-step method and a two-step method: the one-step method is that the carbon dioxide and the hydrogen directly produce methanol and water vapor under the action of a catalyst; the two-step method is that carbon dioxide and hydrogen react under the action of a reverse water gas catalyst to generate carbon monoxide and water vapor, and the carbon monoxide and the hydrogen further react under the action of a methanol synthesis catalyst to generate methanol. Because the technology of synthesizing the methanol catalyst by the two-step method is relatively mature, the technology is more concerned and used.
In the prior art, methanol is synthesized by a two-step method, and the reaction flow is divided into two stages, wherein the first stage is that carbon dioxide and hydrogen are subjected to reverse water gas reaction to synthesize carbon monoxide and water vapor as an endothermic reaction, and the second stage is that carbon monoxide and hydrogen are subjected to exothermic reaction to synthesize methanol. The heat absorption and the heat release of the two stages are independently controlled, so that the whole reaction system has higher energy consumption level, poorer overall economy and complex reaction system.
Disclosure of Invention
In order to solve all or part of the above problems, an object of the present utility model is to provide a chemical reaction apparatus which can reduce energy consumption and simplify the structure of the entire apparatus.
The utility model provides a chemical combination reaction device, which comprises a shell, wherein a closed space is formed in the shell, an upper pipe box, a lower pipe box, a reaction layer and a catalyst pipe are arranged in the shell, and the upper pipe box is positioned at the top of the closed space; the lower pipe box is positioned at the lower part of the closed space, and a raw material gas inlet is formed on the lower pipe box; the reaction layer is positioned between the upper pipe box and the lower pipe box; the catalyst material pipe is arranged in the reaction layer, and meanwhile, two ends of the catalyst material pipe are respectively communicated with the lower pipe box and the upper pipe box; the reaction layer comprises a first product air chamber, a catalyst filling chamber and a second product air chamber in sequence along the transverse direction, the upper pipe box is communicated with the first product air chamber, a product air outlet is formed in the second product air chamber, a first catalyst is filled in a catalyst pipe, and a second catalyst is filled in a catalyst filling chamber.
In some embodiments, the catalyst conduit is disposed vertically within the reaction layer, and the catalyst conduit is not in communication with the reaction layer.
In some embodiments, a plurality of catalyst tubes are included.
In some embodiments, a plurality of catalyst tubes are disposed circumferentially distributed from the center of the housing outward.
In some embodiments, the lower tube box comprises a lower tube plate, a plurality of lower vent holes are formed on the lower tube plate, and one end of each catalyst tube is respectively and hermetically fixed with each lower vent hole.
In some embodiments, the upper tube box comprises an upper tube plate, a plurality of upper vent holes are formed on the upper tube plate, and the other end of each catalyst tube is respectively and hermetically fixed with each upper vent hole.
In some embodiments, a gas passing hole is formed in the upper tube sheet on one side of the first product gas chamber, the gas passing hole being in communication with the first product gas chamber.
In some embodiments, the first product plenum comprises a first equalizing plate having edges in sealing fixed connection with the upper tube sheet, the lower tube sheet, and the housing, respectively, and having vent holes formed therein in communication with the catalyst-filled chamber.
In some embodiments, the second product gas chamber comprises a second equalizing plate, the edges of which are fixedly connected with the upper tube plate, the lower tube plate and the shell in a sealing manner, and the second equalizing plate is provided with a vent hole communicated with the catalyst filling chamber.
In some embodiments, the vent holes are provided in several.
According to the technical scheme, the combined reaction device of the utility model can reduce the energy consumption of the combined reaction device by combining heat absorption and heat release, and meanwhile, the combined reaction device of the embodiment of the utility model has a simple structure and is convenient to use.
Drawings
FIG. 1 is a schematic structural view of some embodiments of a chemical combination reaction apparatus according to an embodiment of the present utility model, in which the direction of gas movement is shown;
fig. 2 is a schematic cross-sectional structure of a chemical combination reaction apparatus according to an embodiment of the present utility model, excluding the first catalyst and the second catalyst.
Detailed Description
For a better understanding of the objects, structures and functions of the present utility model, a chemical combination reaction apparatus according to the present utility model will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of some embodiments of a chemical combination reaction apparatus 100 according to an embodiment of the present utility model, in which the direction of gas movement is shown; fig. 2 is a schematic cross-sectional structure of a chemical reaction apparatus 100 according to an embodiment of the present utility model, in which the first catalyst 51 and the second catalyst 421 are not included. As shown in fig. 1 and 2, the chemical combination reaction apparatus 100 comprises a housing 1, wherein a closed space is formed inside the housing 1, an upper tube box 2, a lower tube box 3, a reaction layer 4 and a catalyst tube 5 are arranged inside the housing 1, and the upper tube box 2 is positioned at the top of the closed space; the lower pipe box 3 is positioned at the lower part of the closed space, and a raw material gas inlet 31 is formed on the lower pipe box 3; the reaction layer 4 is positioned between the upper pipe box 2 and the lower pipe box 3; the catalyst material pipe 5 is arranged in the reaction layer 4, and meanwhile, two ends of the catalyst material pipe 5 are respectively communicated with the lower pipe box 3 and the upper pipe box 2; the reaction layer 4 includes a first product air chamber 41, a catalyst filling chamber 42 and a second product air chamber 43 in sequence along a transverse direction, the upper tube box 2 is communicated with the first product air chamber 41, a product air outlet 431 is arranged on the second product air chamber 43, a first catalyst 51 is filled in the catalyst tube 5, and a second catalyst 421 is filled in the catalyst filling chamber 42.
In connection with the description of the background art of the present application, the chemical combination reaction apparatus 100 according to the embodiment of the present utility model may be specifically applied to a chemical combination reaction for synthesizing methanol by hydrogenating carbon dioxide. Specifically, the first catalyst 51 in the present application may be a reverse water gas catalyst, and the second catalyst 421 may be a methanol catalyst. In the present application, the reverse water gas reaction that occurs through the reverse water gas catalyst is an endothermic reaction, and the synthesis of methanol that occurs through the methanol catalyst is an exothermic reaction. Thus, it can be understood that the catalyst tube 5 has an endothermic reaction therein and the reaction layer 4 has an exothermic reaction therein.
When the chemical combination reaction device 100 of the embodiment of the utility model is specifically used, the synthesis gas composed of carbon dioxide and hydrogen with the pressure of about 6-8 MPa and the temperature of about 130-150 ℃ enters the lower pipe box 3 through the raw material gas inlet 31 and then enters the catalyst material pipe 5. After the heat exchange temperature of the synthesis gas and the gas in the reaction layer 4 is increased to 220-280 ℃, the synthesis gas reacts under the action of a reverse water gas catalyst to generate carbon monoxide and hydrogen. After the reverse water gas reaction in the catalyst material pipe 5 is completed, the product gas leaves the catalyst material pipe 5, enters the upper pipe box 2, is converged in the upper pipe box 2, enters the first product gas chamber 41, and enters the reaction layer 4. Under the action of the methanol catalyst, carbon monoxide and hydrogen react to generate methanol, and simultaneously release heat. The heat released by the methanol synthesis reaction heats the carbon dioxide and hydrogen in the catalyst pipe 5 under the carrying of the product gas flow, continuously supplies the carbon dioxide and hydrogen to carry out endothermic reaction to generate carbon monoxide, and promotes the normal operation of the reverse water gas reaction. The carbon monoxide and the hydrogen leave the reaction layer 4 after reacting in the reaction layer 4 to a certain extent, the mixed gas of the reaction product and the unreacted gas leaves the reaction layer 4 and enters the second product gas chamber 43, and finally the mixed gas is discharged from the product gas outlet 431, so that the single-pass reaction of synthesizing the methanol by hydrogenating the carbon dioxide is completed.
Through the arrangement, the combination of heat absorption and heat release of the chemical combination reaction device 100 according to the embodiment of the utility model reduces the energy consumption of the chemical combination reaction device 100, and meanwhile, the chemical combination reaction device 100 according to the embodiment of the utility model has simple structure and convenient use.
Referring to fig. 1, in some embodiments, the catalyst tube 5 may be disposed vertically in the reaction layer 4, and the catalyst tube 5 is not in communication with the reaction layer 4. By the arrangement, on one hand, the catalyst material pipe 5 is vertically arranged in the reaction layer 4, so that the heat absorption of the catalyst material pipe 5 is more uniform; on the other hand, the catalyst pipe 5 is not communicated with the inside of the reaction layer 4, so that the catalyst in the catalyst pipe 5 and the catalyst in the reaction layer 4 can be filled independently, and interference caused by different catalysts can be avoided.
Referring to fig. 2, in some embodiments, the chemical combination reaction apparatus 100 according to the present utility model may include a plurality of catalyst tubes 5. With this arrangement, the reaction efficiency of the catalytic reaction through the catalyst pipe 5 can be effectively improved, and the reaction efficiency of the chemical reaction apparatus 100 can be further improved.
Referring to fig. 2, in some embodiments, a plurality of catalyst tubes 5 are disposed circumferentially outward from the center of the housing 1. By this arrangement, uniform heating of each catalyst tube 5 can be facilitated. Preferably, a plurality of catalyst tubes 5 are arranged at equal intervals.
Referring to fig. 1 and 2, in some embodiments, the lower tube box 3 may include a lower tube plate 32, where a plurality of lower ventilation holes (not shown) are formed on the lower tube plate 32, and one end of each catalyst tube 5 is respectively sealed and fixed with each lower ventilation hole.
In the present application, the lower tube box 3 may be formed by fixedly connecting the lower tube plate 32 and the housing 1 in a sealing manner. The lower vent holes correspond to the number of catalyst tubes 5.
Referring to fig. 1 and 2, in some embodiments, the upper tube box 2 includes an upper tube plate 21, and a plurality of upper ventilation holes (not shown in the drawings) are formed on the upper tube plate 21, and the other ends of the catalyst tubes 5 are respectively sealed and fixed with the upper ventilation holes.
In the present application, the upper tube box 2 may be formed by fixedly connecting the upper tube plate 21 and the housing 1 in a sealing manner. The upper vent holes correspond to the number of catalyst tubes 5.
Referring to fig. 1, in some embodiments, a gas passing hole 22 is formed on one side of the upper tube plate 21 located in the first product gas chamber 41, and the gas passing hole 22 communicates with the first product gas chamber 41 for gas circulation.
Referring to fig. 1 and 2, in some embodiments, the first product gas chamber 41 may include a first equalizing plate 411, where edges of the first equalizing plate 411 are fixedly connected to the upper tube plate 21, the lower tube plate 32 and the shell 1 in a sealing manner, and ventilation holes (not shown) communicating with the catalyst filling chamber 42 are formed in the first equalizing plate 411.
Referring to fig. 1 and 2, in some embodiments, the second product gas chamber 43 may include a second equalizing plate 432, where edges of the second equalizing plate 432 are fixedly connected to the upper tube plate 21, the lower tube plate 32, and the shell 1 in a sealing manner, and a vent hole (not shown) is formed in the second equalizing plate 432 and is in communication with the catalyst filling chamber 42.
In some embodiments, the vent holes may be provided in several numbers.
In this application, the first equalizing plate 411 and the second equalizing plate 432 are used for equalizing gas distribution.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. The chemical combination reaction device is characterized by comprising a shell, wherein a closed space is formed in the shell, an upper pipe box, a lower pipe box, a reaction layer and a catalyst pipe are arranged in the shell, and the upper pipe box is positioned at the top of the closed space; the lower pipe box is positioned at the lower part of the closed space, and a raw material gas inlet is formed on the lower pipe box; the reaction layer is positioned between the upper pipe box and the lower pipe box; the catalyst material pipe is arranged in the reaction layer, and meanwhile, two ends of the catalyst material pipe are respectively communicated with the lower pipe box and the upper pipe box; the reaction layer comprises a first product air chamber, a catalyst filling chamber and a second product air chamber in sequence along the transverse direction, the upper pipe box is communicated with the first product air chamber, a product air outlet is formed in the second product air chamber, a first catalyst is filled in the catalyst pipe, and a second catalyst is filled in the catalyst filling chamber.
2. The chemical combination reaction apparatus according to claim 1, wherein the catalyst pipe is vertically disposed in the reaction layer, and the catalyst pipe is not in communication with the reaction layer.
3. The chemical combination reaction apparatus according to claim 2, comprising a plurality of the catalyst pipes.
4. A chemical combination reaction apparatus according to claim 3, wherein a plurality of the catalyst tubes are disposed in a circumferential direction from the center of the housing.
5. A chemical combination reaction apparatus according to claim 3, wherein the lower tube case includes a lower tube sheet on which a plurality of lower vent holes are formed, and one end of each of the catalyst tubes is sealed and fixed with each of the lower vent holes, respectively.
6. The chemical combination reaction apparatus according to claim 5, wherein the upper tube box comprises an upper tube plate, a plurality of upper vent holes are formed in the upper tube plate, and the other end of each of the catalyst tubes is sealed and fixed with each of the upper vent holes.
7. The chemical combination reaction apparatus according to claim 6, wherein a gas passing hole is formed in a side of the upper tube sheet located in the first product gas chamber, the gas passing hole being in communication with the first product gas chamber.
8. The chemical combination reaction apparatus according to claim 6, wherein the first product gas chamber comprises a first equalizing plate, edges of the first equalizing plate are respectively and fixedly connected with the upper tube plate, the lower tube plate and the shell in a sealing manner, and vent holes communicated with the catalyst filling chamber are formed in the first equalizing plate.
9. The chemical combination reaction apparatus according to claim 8, wherein the second product gas chamber comprises a second equalizing plate, edges of the second equalizing plate are respectively and fixedly connected with the upper tube plate, the lower tube plate and the shell in a sealing manner, and vent holes communicated with the catalyst filling chamber are formed in the second equalizing plate.
10. The chemical combination reaction apparatus according to claim 9, wherein the number of the vent holes is several.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223453032.6U CN219209878U (en) | 2022-12-22 | 2022-12-22 | Chemical combination reaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223453032.6U CN219209878U (en) | 2022-12-22 | 2022-12-22 | Chemical combination reaction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219209878U true CN219209878U (en) | 2023-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223453032.6U Active CN219209878U (en) | 2022-12-22 | 2022-12-22 | Chemical combination reaction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219209878U (en) |
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2022
- 2022-12-22 CN CN202223453032.6U patent/CN219209878U/en active Active
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