CO preferential oxidation device
The CO preferential oxidation device, with its stepwise oxidation reaction and all-round heat exchange design, solves the problems of reaction temperature control and heat recovery, achieving efficient thermal energy utilization and equipment compactness, and is suitable for a variety of scenarios.
Patent Information
- Application Number
- CN202520000022.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-01
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-01-01
AI Technical Summary
Existing CO preferential oxidation devices face challenges in controlling reaction temperature and heat recovery, especially in large-scale processing, resulting in low thermal efficiency and large equipment size, making them unsuitable for various scenarios.
The CO preferential oxidation device, which adopts a stepwise oxidation reaction and a full-range continuous heat exchange design, achieves precise control of the reaction temperature and recovers heat through stepwise oxidation reaction and coolant circulation between different chambers. The device has a compact design and is suitable for various scenarios.
It achieves stable control of reaction temperature and effective heat recovery, improves system thermal energy utilization, reduces equipment wear and tear, and makes the equipment suitable for various scenarios.
Smart Images
Figure CN223901577U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a gas oxidation technical field, concretely is a CO preferential oxidation device. BACKGROUND
[0002] Natural gas, associated gas, biogas and the like are reformed by steam to obtain hydrogen, and the hydrogen-rich gas obtained after high-low temperature shift reaction has about 0.5% CO, and the CO concentration is reduced to below 10 ppm through CO preferential oxidation reaction, and the reaction mechanism is that CO preferentially reacts with O2 to generate CO2 under the action of a catalyst.
[0003] CO oxidation is a strong exothermic reaction, and excessive oxygen supply may cause local overheating or temperature runaway, which not only affects the activity and service life of the catalyst, but also may cause side reactions to reduce the hydrogen production rate and quality, and the prior art generally adopts a multi-stage oxygen supply reactor such as a plate or plate-fin reactor and uses a fan for air cooling, but the overall temperature of the reactor is difficult to accurately control, and the generated heat cannot be recycled and reused, which reduces the thermal efficiency of the hydrogen production system, especially in the case of large processing capacity and the need to increase the scale of the reaction equipment, the temperature control and heat energy utilization problems are more prominent, which limits the applicable scenarios, and the above problems are solved by providing a CO preferential oxidation device. SUMMARY
[0004] The utility model aims at providing a CO preferential oxidation device to solve the problems in the background art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a CO preferential oxidation device, comprising a warehouse shell, a warehouse inner shell, a first warehouse body, a circulating warehouse and a second warehouse body, the warehouse inner shell is located in the inner cavity of the warehouse shell, the first warehouse body is located in the inner cavity of the warehouse inner shell, the circulating warehouse is located between the inner side of the warehouse inner shell and the outer side of the first warehouse body, the second warehouse body is located in the inner cavity of the warehouse inner shell, the inner cavity of the first warehouse body is provided with a sieve hole disc at the upper part and the lower part respectively, the sieve hole discs are filled with catalysts, the inner cavity of the second warehouse body is provided with an annular sieve hole disc at the upper part and the lower part respectively, the annular sieve hole discs are filled with catalysts, a coolant inlet pipe is fixedly connected to the middle of the bottom of the warehouse shell, a first feeding pipe is fixedly connected to the top left side of the warehouse shell, the bottom end of the first feeding pipe penetrates the warehouse inner shell and extends into the inner cavity of the second warehouse body, a reaction gas outlet pipe is fixedly connected to the middle of the bottom of the warehouse inner shell, and the bottom end of the reaction gas outlet pipe penetrates the coolant inlet pipe and extends to the bottom of the warehouse shell.
[0006] Further description of the above technical scheme:
[0007] The top left side of the first bin body is fixedly connected with a second feeding pipe, and the bottom end of the second feeding pipe extends to the inner cavity of the first bin body, penetrates the upper sieve hole disc and is located at the lower end of the upper sieve hole disc.
[0008] As a further description of the above technical solution:
[0009] The right side wall of the first bin body is fixedly connected with a reaction gas inlet pipe, and the top of the reaction gas inlet pipe is fixedly connected with a first oxygen pipe.
[0010] As a further description of the above technical solution:
[0011] The inner cavity of the first bin body is in communication with the inner cavity of the bin inner shell, the top middle of the first bin body is fixedly connected with a second oxygen pipe, and the bottom end of the second oxygen pipe extends to the bottom of the inner cavity of the first bin body.
[0012] As a further description of the above technical solution:
[0013] The inner cavity of the circulating bin is in communication with the cavity between the bin outer shell and the bin inner shell, and the upper side of the right side wall of the circulating bin is fixedly connected with a coolant outlet pipe.
[0014] Compared with the prior art, the beneficial effects of the CO preferential oxidation device are as follows: the reaction gas enters through the reaction gas inlet pipe, mixes with the oxygen input by the first oxygen pipe, and then enters the first bin body to react, the reacted gas enters the connecting passage between the first bin body and the second bin body, mixes with the oxygen from the second oxygen pipe, and then enters the second bin body to react for the second time, after the CO outlet concentration meets the requirements, the coolant is transported through the cavity formed by the second bin body and the bin inner shell, the coolant is transported through the cavity between the bin outer shell and the bin inner shell, and then the coolant is transported through the cavity between the bin outer shell and the circulating bin, the heat exchange of the second bin body is controlled, the coolant is transported through the cavity between the circulating bin and the first bin body, the heat exchange of the first bin body is controlled, and finally the coolant is discharged through the coolant outlet pipe, and the reaction gas is discharged through the reaction gas outlet pipe, through the step-by-step oxidation reaction and the all-around continuous heat exchange design, not only can the reaction temperature in the bin be stably controlled, but also the heat generated by the reaction can be effectively recovered, and the system heat energy utilization rate is improved, and the reaction equipment is compact in design, small in size and flexible in control, and can be applied to various scenes. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 A front view cross-sectional structure schematic view of a CO preferential oxidation device is provided for the utility model.
[0016] Figure 2 A bin outer shell and circulating bin structure schematic view of a CO preferential oxidation device is provided for the utility model.
[0017] Figure 3 A CO preferential oxidation device's first bin body structure schematic view is provided in the utility model.
[0018] Figure 4 A CO preferential oxidation device's second bin body structure schematic view is provided in the utility model.
[0019] In the drawing: 1, bin outer shell; 2, coolant inlet pipe; 3, first feeding pipe; 4, bin inner shell; 5, reaction gas outlet pipe; 6, first bin body; 7, sieve hole disc; 8, second feeding pipe; 9, reaction gas inlet pipe; 10, first oxygen pipe; 11, second oxygen pipe; 12, circulating bin; 13, coolant outlet pipe; 14, second bin body; 15, annular sieve hole disc. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0021] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the features limited as "first" and "second" can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0022] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0023] The utility model provides a CO preferential oxidation device, can control the temperature of reaction in the process of gas reaction, and can recycle heat, reduces the loss simultaneously, and the volume of reaction equipment is small, can be applicable to various scenes, please refer to Figures 1-4 , including the warehouse shell 1, the warehouse inner shell 4, the first warehouse body 6, the circulation warehouse 12 and the second warehouse body 14,
[0024] Please refer to Figures 1-4 , the warehouse inner shell 4 is located in the inner chamber of the warehouse shell 1, the first warehouse body 6 is located in the inner chamber of the warehouse inner shell 4, the circulation warehouse 12 is located between the inner side of the warehouse inner shell 4 and the outside of the first warehouse body 6, the second warehouse body 14 is located in the inner chamber of the warehouse inner shell 4, the inner chamber upper portion and lower portion of the first warehouse body 6 are equipped with sieve hole disc 7 respectively, the inner chamber upper portion and lower portion of the second warehouse body 14 are equipped with annular sieve hole disc 15 respectively, the bottom middle part of the warehouse shell 1 is fixedly connected with coolant inlet pipe 2, the top left side of the warehouse shell 1 is fixedly connected with first feeding pipe 3, and the bottom end of first feeding pipe 3 penetrates through the warehouse inner shell 4 and extends to the inner chamber of the second warehouse body 14, the bottom middle part of the warehouse inner shell 4 is fixedly connected with reaction gas outlet pipe 5, and the bottom end of reaction gas outlet pipe 5 penetrates through coolant inlet pipe 2 and extends to the bottom of the warehouse shell 1, reaction gas enters through reaction gas inlet pipe 9, mixes with the oxygen input by first oxygen pipe 10 and then enters the first warehouse body 6 to react, the reacted gas enters the connecting passage between the first warehouse body and the second warehouse body, mixes with the oxygen from the second oxygen pipe, is mixed and then is introduced into the second warehouse body to react for the second time, the reacted gas is transported through the chamber formed by the second warehouse body 14 and the warehouse inner shell 4, the coolant is transported through the chamber between the warehouse shell 1 and the warehouse inner shell 4, the coolant is then transported through the chamber between the warehouse shell 1 and the circulation warehouse 12, the temperature inside the second warehouse body 14 is controlled by heat exchange, the temperature inside the first warehouse body 6 is controlled by heat exchange through the chamber between the circulation warehouse 12 and the first warehouse body 6, and finally the coolant is discharged through coolant outlet pipe 13, and the reaction gas is discharged through reaction gas outlet pipe 5 at the same time.
[0025] As described above, the reaction temperature can be steadily controlled during the gas reaction, the heat generated by the reaction can be effectively recovered and used in the system circulation, and the volume of the reaction equipment is small, so the utility model can be applicable to various scenes.
[0026] Please refer to Figure 1 and 3 , the top left side of the first warehouse body 6 is fixedly connected with second feeding pipe 8, and the bottom end of second feeding pipe 8 extends to the inner chamber of the first warehouse body 6 and penetrates through the upper sieve hole disc 7 and is located at the lower end of the upper sieve hole disc 7.
[0027] Please refer to Figure 1 and 3The right side wall of the first bin body 6 is fixedly connected with a reaction gas inlet pipe 9, and the top of the reaction gas inlet pipe 9 is fixedly connected with a first oxygen pipe 10.
[0028] Please refer to Figure 1 and Figure 3 The inner cavity of the first bin body 6 is communicated with the inner cavity of the bin inner shell 4, the top of the first bin body 6 is fixedly connected with a second oxygen pipe 11, and the bottom end of the second oxygen pipe 11 extends to the bottom of the inner cavity of the first bin body 6.
[0029] Please refer to Figures 1-2 The inner cavity of the circulating bin 12 is communicated with the cavity between the bin outer shell 1 and the bin inner shell 4, and the right side wall of the circulating bin 12 is fixedly connected with a coolant outlet pipe 13.
[0030] In the specific use, the first feeding pipe 3 and the second feeding pipe 8 are connected with the catalyst adding device, the first oxygen pipe 10 and the second oxygen pipe 11 are connected with the oxygen gas conveying device, the coolant inlet pipe 2 and the coolant outlet pipe 13 are connected with the input and output pipes of the coolant conveying device respectively, the reaction gas is connected with the reaction gas inlet pipe 9, the reaction gas outlet pipe 5 is connected with the storage device, the catalyst is added into the second bin body 14 through the first feeding pipe 3, the catalyst is added into the first bin body 6 through the second feeding pipe 8, the reaction gas enters through the reaction gas inlet pipe 9, the oxygen gas is input through the first oxygen pipe 10 to mix and enter the first bin body 6 to react, the reacted gas is subjected to secondary reaction in the cavity formed by the first bin body 6 and the second bin body 14, the reacted gas is conveyed through the cavity formed by the second bin body 14 and the bin inner shell 4, the coolant is conveyed through the cavity between the bin outer shell 1 and the bin inner shell 4, the coolant is conveyed through the cavity between the bin outer shell 1 and the circulating bin 12 to control the temperature of the second bin body 14, the coolant is conveyed through the cavity between the circulating bin 12 and the first bin body 6 to control the temperature of the first bin body 6, and finally the coolant is discharged through the coolant outlet pipe 13, and the reaction gas is discharged through the reaction gas outlet pipe 5.
[0031] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0032] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.
Claims
1. A CO preferential oxidation device, characterized by: The utility model relates to a circulating reactor, including bin shell (1), bin inner shell (4), first bin body (6), circulating bin (12) and second bin body (14), bin inner shell (4) is located in the inner chamber of bin shell (1), first bin body (6) is located in the inner chamber of bin inner shell (4), circulating bin (12) is located between the inner side of bin inner shell (4) and the outside of first bin body (6), second bin body (14) is located in the inner chamber of bin inner shell (4), the inner chamber upper portion and bottom portion of first bin body (6) are equipped with sieve hole disc (7) respectively, the inner chamber upper portion and bottom portion of second bin body (14) are equipped with annular sieve hole disc (15) respectively, the bottom intermediate portion of bin shell (1) is fixedly connected with coolant inlet pipe (2), the top left side of bin shell (1) is fixedly connected with first feeding pipe (3), and the bottom end of first feeding pipe (3) penetrates bin inner shell (4) and extends to the inner chamber of second bin body (14), the bottom intermediate portion of bin inner shell (4) is fixedly connected with reaction gas outlet pipe (5), and the bottom end of reaction gas outlet pipe (5) penetrates coolant inlet pipe (2) and extends to the bottom of bin shell (1).
2. A CO preferential oxidation device according to claim 1, characterized in that: The top left side of first bin body (6) is fixedly connected with second feeding pipe (8), and the bottom end of second feeding pipe (8) extends to the inner chamber of first bin body (6), penetrates upper sieve hole disc (7) and is located at the lower end of upper sieve hole disc (7).
3. A CO preferential oxidation device according to claim 1, characterized in that: The right side wall upper side of first bin body (6) is fixedly connected with reaction gas inlet pipe (9), and the top of reaction gas inlet pipe (9) is fixedly connected with first oxygen pipe (10).
4. A CO preferential oxidation device according to claim 1, characterized in that: The inner chamber of first bin body (6) is communicated with the inner chamber of bin inner shell (4), the top intermediate portion of first bin body (6) is fixedly connected with second oxygen pipe (11), and the bottom end of second oxygen pipe (11) extends to the bottom of the inner chamber of first bin body (6).
5. A CO preferential oxidation device according to claim 1, characterized in that: The inner chamber of circulating bin (12) is communicated with the cavity between bin shell (1) and bin inner shell (4), and the right side wall upper side of circulating bin (12) is fixedly connected with coolant outlet pipe (13).