Gas distribution device for green methanol synthesis reactor
By designing a gas guiding structure and a ceramic ball layer, the problem of uneven gas distribution under unstable flow conditions in traditional gas distribution devices is solved, enabling full utilization of the catalyst and long-term operation of the reactor.
Patent Information
- Application Number
- CN202511244690.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2025-12-16
AI Technical Summary
Traditional gas distribution devices cannot achieve uniform gas distribution under unstable flow conditions, resulting in uneven reaction, insufficient use of catalyst, and increased costs.
The gas flow guiding structure and ceramic ball layer design are adopted, including cylindrical sections, inlet baffles, arc-shaped guide plates and gas distribution plates. Through multiple uniform distributions, the gas enters the heat exchange tube stably, ensuring full utilization of the catalyst.
This achieves uniform gas distribution within the reactor, improves catalyst utilization efficiency, reduces catalyst replacement costs, and ensures long-term reactor operation.
Smart Images
Figure CN121130751A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of methanol preparation, in particular to a gas distribution device for a green methanol synthesis reactor. BACKGROUND
[0002] With the further development of renewable energy in China, wind power and photovoltaic power in northwest and north China have formed a certain scale, and the power demand is less than the power supply, and the problem of grid light and wind abandonment is serious. In order to solve this problem, the state promotes the coupling of new energy industry and chemical industry for green development, and the rich wind and light electricity is used to produce hydrogen by electrolysis of water to produce hydrogen for green methanol synthesis. Or in the northeast and other areas rich in biomass, green methanol is produced by using biological method.
[0003] When the above renewable energy is used to produce green methanol, the inlet gas flow of the green methanol synthesis reactor is unstable, the catalyst is not fully used, and the problems of waste are caused. The requirements for the inlet gas distributor device and the distribution method are high. The traditional gas distribution device is directly opposite to the gas inlet of the equipment, and a baffle slightly larger than the inlet diameter is simply arranged. The baffle is fixed at the inlet by a plurality of flat steel strips, and the gas enters the equipment interior from between the flat steel strips to react with the catalyst to produce methanol. The traditional gas distribution device cannot realize the uniform distribution of the gas to the catalyst reaction zone for the unstable flow of the inlet reaction gas, which affects the stability of the equipment operation, the uneven distribution causes uneven reaction, and the catalyst is not uniformly used in the reaction zone. Moreover, the catalyst can only be replaced as a whole, which reduces the catalyst use efficiency and increases the catalyst use cost. SUMMARY
[0004] In order to solve the problem of uneven gas distribution of the traditional gas distribution device mentioned above, a gas distribution device for a green methanol synthesis reactor is provided. The present application has stable and reliable structure, low manufacturing cost, especially for the unstable flow inlet gas flow, the gas distribution range is large, and the gas distribution is uniform.
[0005] The present application provides a gas distribution device for a green methanol synthesis reactor, which specifically comprises a reactor main body, a gas guide structure, a gas inlet, a tube plate and a plurality of heat exchange tubes, the reactor main body is provided with a gas inlet at the top, and the gas guide structure is arranged on the inner top of the reactor main body; the reactor main body is provided with a tube plate inside, and the tube plate is uniformly provided with a plurality of heat exchange tubes; the heat exchange tube is provided with a catalyst layer inside.
[0006] Further, the gas guide structure comprises a cylinder section, an inlet baffle and a plurality of guide plates, the upper end of the cylinder section is connected with the reactor main body; the inlet baffle is arranged at the center of the cylinder section; one end of the guide plate is connected with the inlet baffle, and the other end is connected with the cylinder section.
[0007] Further, the width of the end of the guide plate and the inlet baffle is less than the width of the other end.
[0008] Further, the surface of the guide plate is arc-shaped.
[0009] Further, a gas distribution plate is further included, which is arranged inside the reactor body and above the tube plate, and a plurality of through holes are arranged on the gas distribution plate.
[0010] Further, a porcelain ball layer is arranged on the upper surface of the tube plate.
[0011] The green methanol synthesis reactor gas distribution device has the following advantages: (1) The green methanol synthesis reactor gas distribution device is characterized in that the inlet baffle and the cylinder section of the gas guide structure can stabilize the unstable fluid first in the space enclosed by the inlet baffle and the cylinder section, then the unstable flow raw gas enters the area arranged with a plurality of arc-shaped guide plates, in the area, the unstable flow raw gas is uniformly mixed with the circumferential rotating fluid and the downward fluid under the action of the arc-shaped guide plate structure, and then the raw gas uniformly fills the space above the gas distribution plate, so that the raw gas is uniformly distributed once. The device has a simple structure, the gas guide structure is welded and fixed with the head, is convenient to install, is reliable in connection, and can ensure long-period operation of the reactor during the service life.
[0012] (2) The green methanol synthesis reactor gas distribution device is characterized in that the gas distribution plate arranged with a plurality of openings is arranged below the gas guide structure to realize secondary uniform distribution of the gas, and the porcelain ball layer with a certain thickness is arranged to stabilize and uniformly distribute the raw gas for the third time, so that the unstable raw gas is stably and uniformly introduced into the reaction area of each heat exchange tube, the raw gas is uniformly introduced into each heat exchange tube through the gaps between the porcelain balls, the raw gas amount in each heat exchange tube is equal, the catalysts in each heat exchange tube participate in the catalytic reaction at the same time, the catalysts in each heat exchange tube are fully utilized at the same time, and the use efficiency of the catalysts is improved. BRIEF DESCRIPTION OF DRAWINGS
[0013] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The embodiments of the application illustrated in the drawings, and their description, are presented to add generic structure and understanding of the application.
[0014] In the drawings: Figure 1 is a structural schematic view of the green methanol synthesis reactor gas distribution device. Figure 2It is the front view of the gas guide structure of the gas distribution device for the green methanol synthesis reactor according to the present application; Figure 3 It is the top view of the gas guide structure of the gas distribution device for the green methanol synthesis reactor according to the present application; Figure 4 It is the structural schematic diagram of the guide plate of the gas distribution device for the green methanol synthesis reactor according to the present application; Wherein: 1-reaction body, 101-cylinder, 102-head, 2-gas guide structure, 201-cylinder section, 202-inlet baffle, 203-guide plate, 3-gas inlet, 4-porcelain ball layer, 5-tube plate, 6-heat exchange tube, 7-catalyst layer, 8-gas distribution plate. DETAILED DESCRIPTION
[0015] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0016] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0017] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0018] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.
[0019] Specific implementation one: see Figures 1-4Specifically illustrate the present embodiment. The gas distribution device for green methanol synthesis reactor according to the present embodiment specifically comprises a reactor main body 1, a gas flow guide structure 2, a gas inlet 3, a tube sheet 5 and a plurality of heat exchange tubes 6. The reactor main body 1 comprises a cylinder body 101 and a head 102. The cylinder body 101 and the head 102 are the pressure vessel shell of the green methanol synthesis reactor, and the green methanol synthesis reaction is carried out in the shell composed of the cylinder body 101 and the head 102. The head 102 is provided with the gas inlet 3 at the top. The gas inlet 3 is the raw gas inlet of the green methanol synthesis reactor before the synthesis of methanol. The gas flow guide structure 2 is arranged at the top of the inner side of the head 102. The gas flow guide structure 2 and the head 102 are connected by welding. The gas flow guide structure 2 is responsible for collecting, mixing and realizing the first uniform distribution of the stable flow or unstable flow of gas into the area enclosed by the head 102, the cylinder body 101 and the gas distribution plate 8. The cylinder body 101 is internally provided with the tube sheet 5 and the gas distribution plate 8. The gas distribution plate 8 is arranged above the tube sheet 5 and is welded on the cylinder body 101. A plurality of through holes are arranged on the gas distribution plate 8. The second uniform distribution of gas is realized through the gas distribution plate 8. A layer of porcelain ball layer 4 is uniformly arranged on the upper surface of the tube sheet 5. The porcelain ball layer 4 realizes the third uniform distribution of the gas flowing out of the gas distribution plate 8 on the upper surface of the tube sheet 5. The tube sheet 5 is used for separating the synthesis gas in the tube of the green methanol synthesis reactor from the circulating water in the shell. A plurality of heat exchange tubes 6 are uniformly arranged on the tube sheet 5 and are connected by welding. The heat exchange tubes 6 are the reaction zone for synthesizing green methanol from raw gas. The heat exchange tubes 6 are used for receiving the raw gas passing through the porcelain ball layer 4. The heat exchange tubes 6 are internally provided with a catalyst layer 7 for catalyzing the synthesis of green methanol from raw gas.
[0020] The gas flow guide structure 2 comprises a cylinder section 201, an inlet baffle 202 and a plurality of flow guide plates 203. The cylinder section 201 is connected with the reactor main body 1 at the upper end. The inlet baffle 202 is arranged at the center of the cylinder section 201. One end of the flow guide plate 203 is welded with the lower surface of the inlet baffle 202, and the other end is welded with the inner wall of the cylinder section 201. The inlet baffle 202 on the gas flow guide structure 2 is slightly larger than the inner diameter of the gas inlet 3. The inlet baffle 202 prevents the raw gas with unstable flow from directly entering the reactor reaction zone downward. The cylinder section 201 prevents the raw gas with unstable flow from directly entering the reactor reaction zone from all around. The baffle 202 on the gas flow guide structure 2 and the cylinder section 203 block the unstable fluid entering first in the space enclosed by the baffle and the cylinder section. Then the unstable flow of raw gas enters the arrangement area of a plurality of arc-shaped flow guide plates. The unstable flow of raw gas is formed into circumferential rotating fluid by the arc-shaped flow guide plates on the gas flow guide structure 2. The circumferential rotating fluid is mixed with the downward fluid to realize uniform distribution and fill the space above the tube sheet of the reactor to realize the first uniform distribution.
[0021] The width of the end connected with the inlet baffle 202 of the guide vane 203 is smaller than that of the other end, the end on the inner side is narrow, and the end on the outer side is wide.
[0022] The specific working process of the gas distribution device for the green methanol synthesis reactor is as follows: The raw gas enters the reactor from the gas inlet 3, is collected and uniformly distributed in the area surrounded by the head 102, the cylinder 101 and the gas distribution plate 8 after entering the gas guide structure 2, and then flows downward, is uniformly distributed again by the gas distribution plate 8 with a plurality of openings, reaches the porcelain ball layer 4, and is uniformly distributed again by the porcelain ball layer 4.
[0023] The above-mentioned embodiments can well solve the problems of unstable hydrogen flow and waste of catalyst caused by insufficient use of catalyst when water is electrolyzed to obtain raw hydrogen for synthesizing green methanol, and can help the country to consume wind and light green electricity and solve the problem of abandoned light and wind. The special gas guide structure 2 and porcelain ball layer 4 can uniformly distribute the raw gas twice, so that the amount of raw gas in each heat exchange pipe 6 is equal, the catalyst in each heat exchange pipe 6 can participate in the catalytic reaction to synthesize green methanol at the same time, the catalyst in each heat exchange pipe 6 can be fully utilized at the same time, and the use efficiency of the catalyst is improved. The present application has the advantages of simple structure, welding and fixing of the gas guide structure and the head, convenient installation, reliable connection, long-period operation during the service life of the reactor, and application in various large-scale gas phase catalytic reactors.
[0024] Summarizing the above implementation cases, the gas distribution device for the green methanol synthesis reactor provided by the application, by the blocking of the inlet baffle 202 on the gas flow guide structure 2 and the cylinder segment 201, the unstable fluid entering first stabilizes in the space enclosed by the inlet baffle 202 and the cylinder segment 201; then enters the uniform distribution of several arc-shaped flow guide plate arrangement areas, in this area, the unstable flow raw material gas is uniformly mixed with the circumferential rotating fluid and the downward fluid under the action of the arc-shaped flow guide plate structure, and then uniformly fills the space above the gas distribution plate 8 of the reactor, to realize the first uniform distribution of the gas. The application has the advantages of simple structure, gas flow guide structure welded and fixed with the head, convenient installation, reliable connection, and long-period operation during the service life of the reactor. The gas distribution device for the green methanol synthesis reactor provided by the application realizes the second uniform distribution of the gas by setting the gas distribution plate 8 full of several openings under the gas flow guide structure 2; by setting the porcelain ball layer 4 with a certain thickness, the raw material gas is stabilized and uniformly distributed for the third time, so that the unstable raw material gas is finally stabilized and uniformly enters the reaction zone of each heat exchange pipe, the raw material gas uniformly flows into each heat exchange pipe through the gap between the porcelain balls, the raw material gas amount in each heat exchange pipe is equal, the catalyst in each heat exchange pipe 6 participates in the catalytic reaction for preparing green methanol at the same time, the catalyst in each heat exchange pipe is fully utilized at the same time, and the use efficiency of the catalyst is improved.
[0025] The above specific embodiments further specifically describe the purpose, technical solutions and advantages of the application. It should be understood that the above description is only for specific embodiments of the application and is not used to limit the application, and the reasonable combination of the features described in the above embodiments can be included in the protection scope of the application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application should be included in the protection scope of the application.
Claims
1. A gas distribution device for a green methanol synthesis reactor, characterized by: The reactor comprises a reactor body (1), a gas guide structure (2), a gas inlet (3), a tube plate (5) and a plurality of heat exchange tubes (6), the reactor body (1) is provided with the gas inlet (3) at the top, and the gas guide structure (2) is arranged at the top of the inner side of the reactor body (1); the reactor body (1) is internally provided with the tube plate (5), and the tube plate (5) is uniformly provided with the plurality of heat exchange tubes (6); the heat exchange tube (6) is internally provided with a catalyst layer (7).
2. The gas distribution apparatus for green methanol synthesis reactors according to claim 1, characterized in that: The gas guide structure (2) comprises a cylinder section (201), an inlet baffle (202) and a plurality of guide plates (203), the cylinder section (201) is connected with the reactor body (1) at the upper end, the cylinder section (201) is provided with the inlet baffle (202) at the center, and one end of the guide plate (203) is connected with the inlet baffle (202) and the other end is connected with the cylinder section (201).
3. The gas distribution apparatus for green methanol synthesis reactors according to claim 2, characterized in that: The width of the end of the guide plate (203) connected with the inlet baffle (202) is smaller than the width of the other end.
4. The gas distribution device for green methanol synthesis reactors according to claim 2 or 3, characterized in that: The surface of the guide plate (203) is arc-shaped.
5. The gas distribution apparatus for green methanol synthesis reactors of claim 1, wherein: The reactor further comprises a gas equalizing plate (8), the gas equalizing plate (8) is arranged in the reactor body (1) and above the tube plate (5), and the gas equalizing plate (8) is provided with a plurality of through holes.
6. The gas distribution apparatus for green methanol synthesis reactors according to claim 1 or 5, characterized in that: The upper surface of the tube plate (5) is provided with a porcelain ball layer (4).